.page-ux .page-ux-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1.5rem}.page-ux .page-ux-head h2{margin:0}.page-ux .page-ux-eyebrow{color:var(--text-secondary);font-size:.78rem;margin:0 0 .25rem}.page-ux .page-ux-subtitle{color:var(--text-secondary);font-size:.85rem;margin:.3rem 0 0}.page-ux .page-ux-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.75rem;margin:1rem 0}.page-ux .page-ux-toolbar h3{margin:0}.page-ux button .app-icon{vertical-align:middle;flex-shrink:0}.page-ux .btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem}.page-ux [hidden]{display:none!important}.page-dialog{position:fixed;top:0;right:0;bottom:0;left:0;margin:auto;width:min(540px,calc(100vw - 2rem));max-height:calc(100dvh - 2rem);overflow:auto;padding:1.25rem;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface-solid);color:var(--text);box-shadow:var(--shadow-lg)}.page-dialog:not([open]){display:none}.page-dialog::backdrop{background:#0f172a73}.page-dialog-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1rem}.page-dialog-head h3{margin:0;min-width:0;overflow-wrap:anywhere}.page-dialog form{display:flex;flex-direction:column;gap:.75rem;min-width:0}.page-dialog label{display:flex;flex-direction:column;gap:.35rem;font-size:.85rem}.page-dialog input,.page-dialog textarea,.page-dialog select{width:100%;min-width:0;max-width:100%}.page-dialog-actions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:.5rem;margin-top:.5rem}.page-ux-error{color:var(--error);margin:.5rem 0}.dictionary-page .collection-head{display:flex;align-items:center;gap:.85rem;margin:1rem 0}.dictionary-page .collection-head>div:nth-child(2){flex:1;min-width:0;overflow-wrap:anywhere}.dictionary-page .collection-head h3{margin:0;font-size:1.3rem}.dictionary-page .collection-head .badge-default{display:inline-block;margin-top:.4rem}.dictionary-page .collection-symbol,.assignments-page .assignment-book-symbol{display:flex;align-items:center;justify-content:center;width:48px;height:48px;flex-shrink:0;border-radius:var(--radius);background:var(--primary-light);color:var(--primary)}.dictionary-page .collection-practice{display:flex;align-items:center;flex-wrap:wrap;gap:.6rem}.dictionary-page .collection-practice select{width:auto;max-width:100%;min-width:0}.dictionary-page .word-table{background:var(--surface-solid);border-radius:var(--radius)}.dictionary-page .word-table td{padding-top:.85rem;padding-bottom:.85rem}.dictionary-page .word-table th{color:var(--text-secondary)}.dictionary-page .word-table .btn{color:var(--text-secondary)!important}.dictionary-page .dictionary-card{background:var(--surface-solid)}.dictionary-page .dictionary-card h3{overflow-wrap:anywhere}.dictionary-page .dict-unclassified{margin-top:1.75rem}.dictionary-page .dict-unclassified h3{margin:0}.dictionary-page .dict-unclassified>.page-ux-subtitle{margin-bottom:.85rem}.page-action-menu{position:relative;flex-shrink:0}.page-action-menu summary{display:flex;align-items:center;justify-content:center;min-width:40px;min-height:40px;border-radius:var(--radius-sm);list-style:none;cursor:pointer;color:var(--text-secondary)}.page-action-menu summary::-webkit-details-marker{display:none}.page-action-menu>div{position:absolute;right:0;top:calc(100% + 5px);width:min(230px,calc(100vw - 3rem));padding:.4rem;background:var(--surface-solid);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-md);z-index:5}.page-action-menu button{display:block;width:100%;background:transparent;border:0;border-radius:var(--radius-sm);padding:.65rem;text-align:left;color:var(--text-secondary);font:inherit;font-size:.85rem;cursor:pointer}.page-action-menu button:hover{background:var(--primary-light)}.page-action-menu .text-danger{color:var(--error)}.assignments-page .assignments-grid{display:flex;flex-direction:column;gap:.85rem}.assignments-page .assignment-card{display:grid;grid-template-columns:50px minmax(0,1fr) auto;align-items:start;gap:.4rem 1rem;width:100%;padding:1rem;background:var(--surface-solid)}.assignments-page .assignment-card>.lesson-cover,.assignments-page .assignment-book-symbol{grid-column:1;grid-row:1 / 3;width:48px;height:48px;margin:0;border-radius:var(--radius)}.assignments-page .assignment-card .lesson-cover-placeholder{min-height:0;height:48px}.assignments-page .assignment-card .assignment-card-badges{grid-column:2;grid-row:1;margin:0;display:flex;flex-wrap:wrap;gap:.3rem}.assignments-page .assignment-card .assignment-card-body{grid-column:2;grid-row:2;min-width:0;padding:0}.assignments-page .assignment-card h4{margin:.15rem 0 .35rem;overflow-wrap:anywhere}.assignments-page .assignment-card .assignment-card-meta{flex-wrap:wrap}.assignments-page .assignment-card .assignment-card-actions{grid-column:3;grid-row:1 / 3;display:flex;flex-direction:column;align-items:stretch;gap:.3rem;margin:0;padding:0;border:0;max-width:240px}.assignments-page .assignment-launch{display:flex;flex-direction:column;gap:.4rem}.assignments-page .assignment-launch select{font-size:.78rem;width:100%;min-width:0;padding:.4rem}.assignments-page .assignment-secondary-action{font-size:.78rem;padding:.3rem .5rem;background:transparent;box-shadow:none;color:var(--text-secondary)}.assignments-page .assignment-card-progress{margin-top:.6rem}.settings-page .settings-layout{display:grid;grid-template-columns:175px minmax(0,1fr);gap:1.5rem;align-items:start}.settings-page .settings-topic-nav{display:flex;flex-direction:column;gap:.3rem}.settings-page .settings-topic-nav button{display:flex;align-items:center;gap:.55rem;width:100%;border:0;padding:.7rem;border-radius:var(--radius-sm);text-align:left;background:transparent;color:var(--text-secondary);font:inherit;font-size:.85rem;cursor:pointer}.settings-page .settings-topic-nav button[aria-pressed=true]{background:var(--primary-light);color:var(--primary);font-weight:600}.settings-page .settings-content{min-width:0}.settings-page .settings-section{margin-top:0;padding:1.25rem;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface-solid);min-width:0}.settings-page .settings-section>h3{margin-top:0}.settings-page .setting-row{gap:.8rem}.settings-page .setting-row>*,.settings-page .settings-section input,.settings-page .settings-section select,.settings-page .settings-section textarea{min-width:0;max-width:100%}.settings-page .settings-profile-row{flex-wrap:wrap}.settings-page .settings-profile-identity{min-width:0;overflow-wrap:anywhere}.settings-page .role-badge{max-width:100%;white-space:normal}.settings-page .settings-section strong{overflow-wrap:anywhere}.settings-page .theme-toggle{display:flex;flex-wrap:wrap;min-width:0}.settings-page .theme-toggle-btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem}.settings-page .settings-tour-support{margin-top:1rem;padding:.85rem 1rem}.settings-page .settings-tour-support h3{font-size:.9rem}.settings-page .settings-tour-support p{font-size:.8rem!important}.cabinet .cabinet-attention{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;margin:1.3rem 0;padding:1.4rem;border-radius:var(--radius-lg);background:var(--accent-light)}.cabinet .cabinet-attention-label{display:inline-flex;align-items:center;gap:.4rem;color:var(--accent);font-size:.82rem}.cabinet .cabinet-attention h3{margin:.5rem 0 .3rem;font-size:1.35rem}.cabinet .cabinet-attention p{margin:0;font-size:.85rem;color:var(--text-secondary)}.cabinet .cabinet-attention .btn{display:inline-flex;align-items:center;gap:.5rem}.cabinet .cabinet-all-checked{display:flex;align-items:center;gap:.5rem;color:var(--success);font-size:.85rem;margin:1rem 0}.cabinet .cabinet-stats{display:flex;flex-wrap:wrap;gap:.3rem .85rem;margin:1rem 0}.cabinet .cabinet-stat{display:inline-flex;flex-direction:row;align-items:baseline;gap:.35rem;background:transparent;border:0;padding:.3rem 0;box-shadow:none}.cabinet .cabinet-stat-value{font-size:1rem}.cabinet .cabinet-stat-label{font-size:.8rem}.cabinet .cabinet-grid{display:flex;flex-direction:column;gap:.85rem}.cabinet .cabinet-side{display:contents}.cabinet .cabinet-grid>.cabinet-panel{order:2}.cabinet .cabinet-side>.cabinet-panel{order:3}.cabinet .cabinet-side>[data-testid=cabinet-overdue]{order:1}.cabinet .cabinet-panel{background:var(--surface-solid)}.cabinet .cabinet-empty-panel{padding:.8rem 1rem;box-shadow:none}.cabinet .cabinet-empty-panel summary{color:var(--text-secondary);font-size:.85rem;cursor:pointer}.cabinet .cabinet-empty-panel[open]>p{margin-top:.75rem}@media(max-width:1000px){.settings-page .settings-layout{grid-template-columns:1fr;gap:1rem}.settings-page .settings-topic-nav{flex-direction:row;flex-wrap:wrap}.settings-page .settings-topic-nav button{width:auto}}@media(max-width:600px){.assignments-page .assignment-card{grid-template-columns:38px minmax(0,1fr);gap:.4rem .6rem}.assignments-page .assignment-card>.lesson-cover,.assignments-page .assignment-book-symbol{width:36px;height:36px}.assignments-page .assignment-card .lesson-cover-placeholder{height:36px}.assignments-page .assignment-card .assignment-card-actions{grid-column:1 / -1;grid-row:3;max-width:none;flex-direction:row;flex-wrap:wrap;margin-top:.5rem;align-items:center}.assignments-page .assignment-launch{flex-direction:row;flex-wrap:wrap;width:100%;align-items:center}.assignments-page .assignment-launch select{width:auto;flex:1}.settings-page .settings-section{padding:1rem}.settings-page .settings-profile-identity{flex:1 1 calc(100% - 80px)!important}.settings-page .settings-profile-row>.role-badge{margin-left:68px}.settings-page .setting-row{flex-direction:column;align-items:stretch}.settings-page .setting-row>label{min-width:0}.settings-page .theme-toggle-btn{flex:1;flex-direction:column;padding:.6rem .35rem;font-size:.8rem}.dictionary-page .collection-head{gap:.6rem}.dictionary-page .collection-symbol{width:36px;height:36px}.dictionary-page .collection-head h3{font-size:1.1rem}.dictionary-page .word-table{table-layout:fixed;width:100%}.dictionary-page .word-table th:first-child,.dictionary-page .word-table td:first-child{display:none}.dictionary-page .word-table td{overflow-wrap:anywhere}.page-dialog{padding:1rem}}@media(pointer:coarse){.page-action-menu summary,.page-action-menu button,.page-dialog button,.settings-page .settings-topic-nav button{min-height:44px}}.lesson-shell{width:100%;max-width:1200px;margin:0 auto;padding:1rem 1.5rem}.lesson-shell .lesson-shell-nav{margin-bottom:1rem}.lesson-shell .nav-container{max-width:none}.lesson-shell .nav-right{margin-left:auto}.lesson-shell .lesson-home{border:0;background:transparent;padding:0}.lesson-shell-heading{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-bottom:1rem}.lesson-shell-heading h2{margin:0;overflow-wrap:anywhere}.lesson-background-toggle{display:flex;gap:.5rem;align-items:center;color:var(--text-secondary);font-size:.9rem;min-height:44px}.lesson-background-toggle input{width:auto;accent-color:var(--primary)}.lesson-timer{text-align:center;font-weight:600;color:var(--text-secondary);margin-bottom:.75rem}.lesson-timer.is-urgent{color:var(--error)}.lesson-journey{margin:1rem 0 1.25rem}.lesson-journey p{margin:0 0 .75rem;font-size:.9rem;color:var(--text-secondary)}.lesson-journey ol{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;list-style:none;padding:0;margin:0}.lesson-journey li{display:grid;gap:7px;min-width:0;color:var(--text-secondary);font-size:.8rem}.lesson-journey li:before{content:"";height:5px;border-radius:3px;background:var(--border)}.lesson-journey li.is-complete:before{background:var(--primary)}.lesson-journey li[aria-current]{color:var(--accent);font-weight:600}.lesson-journey li[aria-current]:before{background:var(--accent)}.lesson-next-stage{text-align:center;font-size:.85rem;color:var(--text-secondary);margin:1rem 0}.lesson-shell .step-content{max-width:600px;margin:0 auto;padding:24px;background:var(--surface-solid);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.lesson-shell .step-content.step-matching{max-width:740px}.lesson-shell .step-content>h2{font-size:1.2rem;margin-bottom:.75rem}.lesson-shell .step-content>.word-card{max-width:none;width:100%;background:var(--surface-solid);border:0;box-shadow:none;padding:20px 0}.lesson-shell .step-content .flip-card-face{background:var(--surface-solid)}.lesson-shell .option-button{min-height:48px;background:var(--surface-solid)}.lesson-shell .option-button.correct{background:var(--success-light)}.lesson-shell .option-button.incorrect{background:var(--error-light)}.lesson-shell .write-input{max-width:100%;background:var(--surface-solid);font-size:1.15rem}.lesson-shell .word-buttons{flex-wrap:wrap}.lesson-shell .mark-buttons .btn{display:inline-flex;align-items:center;gap:.4rem;min-height:44px}.lesson-pair-count{font-size:.9rem;color:var(--text-secondary);margin-bottom:1rem}.lesson-shell .matching-item{background:var(--surface-solid);overflow-wrap:anywhere}.lesson-shell .matching-item.matched{background:var(--success-light)}.lesson-shell .matching-item.selected{background:var(--primary-light)}.lesson-shell .matching-item.wrong{background:var(--error-light)}.lesson-background{position:relative;isolation:isolate;border-radius:var(--radius-lg);padding:40px 24px 95px;min-height:500px;color-scheme:light}[data-theme=dark] .lesson-background{color-scheme:dark}@media(prefers-color-scheme:dark){[data-theme=system] .lesson-background{color-scheme:dark}}.lesson-background[data-preset=forest]{background:var(--lb-forest)}.lesson-background[data-preset=space]{background:var(--lb-space)}.lesson-background[data-preset=ocean]{background:var(--lb-water)}.lesson-background[data-preset=none]{padding:12px 0;min-height:0;background:transparent}.lesson-background-content{position:relative;min-width:0}.lesson-background .lb-art{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;z-index:-1;border-radius:inherit;pointer-events:none;opacity:var(--lb-strength)}.lesson-background .lb-art>div{position:absolute;top:0;right:0;bottom:0;left:0;display:none}.lesson-background[data-preset=forest] .lb-forest,.lesson-background[data-preset=space] .lb-space,.lesson-background[data-preset=ocean] .lb-ocean{display:block}.lesson-background .lb-art span{position:absolute;display:block}.lesson-background-picker{margin:1rem 0}.lesson-background-picker h4{font-size:.95rem;margin-bottom:.35rem}.lesson-background-hint{font-size:.8rem;color:var(--text-secondary);margin-bottom:.75rem}.lesson-background-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:.5rem}.lesson-background-choice{display:grid;gap:.5rem;padding:6px 6px 10px;background:var(--surface-solid);border:1px solid var(--border);border-radius:12px;text-align:left;min-width:0}.lesson-background-choice[aria-pressed=true]{border-color:var(--primary);background:var(--primary-light);color:var(--primary)}.lesson-background-choice>span{padding:0 .25rem;font-size:.85rem}.lesson-background--thumb,.lesson-background--thumb[data-preset=none]{height:80px;min-height:0;padding:0;overflow:hidden;border-radius:7px;background:var(--bg-subtle)}.lesson-background--thumb[data-preset=forest]{background:var(--lb-forest)}.lesson-background--thumb[data-preset=space]{background:var(--lb-space)}.lesson-background--thumb[data-preset=ocean]{background:var(--lb-water)}.lesson-background--thumb .lb-art{transform:scale(.25);width:400%;height:400%;transform-origin:top left}.lesson-background-mini-card{display:block;position:relative;width:55%;height:42px;margin:19px auto;background:var(--surface-solid);border:1px solid var(--border);border-radius:6px}.creation-sidebar .lesson-background-options,.lesson-edit-settings .lesson-background-options{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-background-preview .lesson-background{padding:50px 16px 95px;min-height:350px}.lesson-background-demo{max-width:400px;margin:0 auto;background:var(--surface-solid);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;color:var(--text)}.lesson-background-demo h2{margin:22px 0}.lesson-background-demo p{font-size:.9rem;color:var(--text-secondary)}@media(max-width:600px){.lesson-shell{padding:.75rem}.lesson-shell .step-content{padding:18px 14px}.lesson-journey li{position:relative;text-align:center}.lesson-journey li>span{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.lesson-journey li:after{content:attr(data-number)}.lesson-background{padding:50px 12px 100px;min-height:470px}.lesson-background-options{grid-template-columns:repeat(2,minmax(0,1fr))}}.lesson-background{--lb-bg:light-dark(#eeecea,#111827);--lb-card:light-dark(#fff,#1c2536);--lb-text:light-dark(#182337,#edf1f8);--lb-muted:light-dark(#536078,#b0bbcf);--lb-border:light-dark(#dce1e9,#36435b);--lb-blue:light-dark(#29477c,#adc6f7);--lb-blue-on:light-dark(#fff,#182940);--lb-blue-soft:light-dark(#eaf0fa,#263b59);--lb-orange:light-dark(#b95214,#f3ad7a);--lb-good:light-dark(#226744,#a2d3b6);--lb-error:light-dark(#a53434,#f7b0b0);--lb-shadow:light-dark(#15294018,#00000030);--lb-forest:light-dark(#eaf1e9,#172e2b);--lb-tree:light-dark(#86ae91,#3b6a57);--lb-tree-near:light-dark(#608873,#2e5646);--lb-tree-far:light-dark(#b0c8a7,#42614b);--lb-hill:light-dark(#c3d6b6,#3b5845);--lb-cloud:light-dark(#faf9ef,#466257);--lb-sun:light-dark(#f1d79a,#b3914f);--lb-wood:light-dark(#c7a481,#776044);--lb-flower:light-dark(#deb8b7,#aa858a);--lb-space:light-dark(#e8ebf8,#1a2340);--lb-star:light-dark(#a7afd3,#9ca9d8);--lb-planet:light-dark(#b5c3e6,#6379ac);--lb-planet-warm:light-dark(#debfa9,#a8836e);--lb-planet-band:light-dark(#93a5cc,#8095bf);--lb-moon:light-dark(#d5d5e5,#5f6b8a);--lb-crater:light-dark(#bdc0d4,#485574);--lb-water:light-dark(#e2f0f4,#17313e);--lb-wave:light-dark(#bddce5,#2b5265);--lb-wave-near:light-dark(#99c5d2,#35697d);--lb-weed:light-dark(#90bbaa,#477d73);--lb-fish:light-dark(#e5c07f,#b89961);--lb-fish-blue:light-dark(#91bccb,#5d9ab1);--lb-coral:light-dark(#d4a0a1,#9c777e);--lb-sand:light-dark(#e6dcca,#716d5d);--lb-shell:light-dark(#dcc0b6,#a58b81);--lb-strength:.86}.lesson-background .lb-sun{width:62px;height:62px;top:26px;right:33px;background:var(--lb-sun);border-radius:50%;box-shadow:0 0 0 13px color-mix(in srgb,var(--lb-sun) 16%,transparent)}.lesson-background .lb-cloud{width:92px;height:27px;background:var(--lb-cloud);border-radius:50%}.lesson-background .lb-cloud:before,.lesson-background .lb-cloud:after{content:"";position:absolute;border-radius:50%;background:inherit}.lesson-background .lb-cloud:before{width:37px;height:37px;left:17px;bottom:3px}.lesson-background .lb-cloud:after{width:45px;height:45px;right:10px;bottom:0}.lesson-background .lb-cloud-a{left:30px;top:43px}.lesson-background .lb-cloud-b{right:75px;top:143px;transform:scale(.55);opacity:.65}.lesson-background .lb-hill{width:440px;height:190px;border-radius:50%;background:var(--lb-hill);bottom:-105px}.lesson-background .lb-hill-a{left:-140px}.lesson-background .lb-hill-b{right:-160px;bottom:-85px;background:var(--lb-tree-far)}.lesson-background .lb-stream{width:220px;height:70px;background:var(--lb-wave);bottom:-9px;left:37%;border-radius:50%;transform:rotate(-14deg)}.lesson-background .lb-pine{width:107px;height:210px;background:var(--lb-tree);clip-path:polygon(50% 0,87% 33%,71% 33%,98% 64%,77% 64%,100% 92%,55% 92%,55% 100%,45% 100%,45% 92%,0 92%,23% 64%,2% 64%,29% 33%,13% 33%)}.lesson-background .lb-pine-a{left:-16px;bottom:82px;background:var(--lb-tree-far);height:255px}.lesson-background .lb-pine-b{left:40px;bottom:18px;height:218px;background:var(--lb-tree-near)}.lesson-background .lb-pine-c{right:-28px;bottom:42px;height:265px;background:var(--lb-tree-near);width:130px}.lesson-background .lb-pine-d{right:53px;bottom:93px;height:190px;background:var(--lb-tree-far);width:80px}.lesson-background .lb-bush{width:74px;height:48px;border-radius:45%;background:var(--lb-tree)}.lesson-background .lb-bush:before,.lesson-background .lb-bush:after{content:"";position:absolute;width:40px;height:45px;border-radius:50%;background:inherit;top:-15px}.lesson-background .lb-bush:after{left:32px;top:-5px}.lesson-background .lb-bush-a{left:1px;bottom:3px}.lesson-background .lb-bush-b{right:24px;bottom:5px;background:var(--lb-tree-far)}.lesson-background .lb-mushroom{width:10px;height:22px;background:var(--lb-wood);border-radius:4px;bottom:25px}.lesson-background .lb-mushroom:before{content:"";position:absolute;top:-10px;left:-12px;width:34px;height:19px;border-radius:24px 24px 7px 7px;background:radial-gradient(circle at 25% 65%,var(--lb-cloud) 2px,transparent 3px),radial-gradient(circle at 65% 30%,var(--lb-cloud) 2px,transparent 3px),var(--lb-flower)}.lesson-background .lb-mushroom-a{left:87px}.lesson-background .lb-mushroom-b{left:109px;bottom:20px;transform:scale(.6)}.lesson-background .lb-flower{width:6px;height:26px;background:var(--lb-tree);bottom:18px}.lesson-background .lb-flower:before{content:"";position:absolute;top:-10px;left:-7px;width:18px;height:18px;border-radius:50%;background:var(--lb-sun);box-shadow:7px 0 var(--lb-flower),-7px 0 var(--lb-flower),0 7px var(--lb-flower),0 -7px var(--lb-flower)}.lesson-background .lb-flower-a{right:100px}.lesson-background .lb-flower-b{right:127px;bottom:14px;transform:scale(.7)}.lesson-background .lb-stone{width:41px;height:23px;background:var(--lb-wood);border-radius:65% 45% 25% 25%;bottom:12px;left:144px}.lesson-background .lb-leaf{width:26px;height:12px;background:var(--lb-tree-far);border-radius:100% 0;transform:rotate(-25deg)}.lesson-background .lb-leaf-a{top:165px;left:25px}.lesson-background .lb-leaf-b{top:204px;right:30px;transform:rotate(25deg)}.lesson-background .lb-stars{top:0;right:0;bottom:0;left:0;background-image:radial-gradient(circle at 6% 12%,var(--lb-star) 2px,transparent 3px),radial-gradient(circle at 18% 8%,var(--lb-star) 1px,transparent 2px),radial-gradient(circle at 35% 5%,var(--lb-star) 2px,transparent 3px),radial-gradient(circle at 62% 9%,var(--lb-star) 1px,transparent 2px),radial-gradient(circle at 90% 34%,var(--lb-star) 2px,transparent 3px),radial-gradient(circle at 95% 55%,var(--lb-star) 1px,transparent 2px),radial-gradient(circle at 9% 58%,var(--lb-star) 2px,transparent 3px),radial-gradient(circle at 4% 76%,var(--lb-star) 1px,transparent 2px),radial-gradient(circle at 18% 85%,var(--lb-star) 2px,transparent 3px),radial-gradient(circle at 34% 94%,var(--lb-star) 1px,transparent 2px),radial-gradient(circle at 56% 89%,var(--lb-star) 2px,transparent 3px),radial-gradient(circle at 78% 84%,var(--lb-star) 2px,transparent 3px)}.lesson-background .lb-planet{border-radius:50%;background:var(--lb-planet)}.lesson-background .lb-planet-a{width:74px;height:74px;right:28px;top:41px;background:linear-gradient(30deg,var(--lb-planet) 25%,var(--lb-planet-band) 26%,var(--lb-planet-band) 38%,var(--lb-planet) 39%,var(--lb-planet) 57%,var(--lb-planet-band) 58%,var(--lb-planet-band) 67%,var(--lb-planet) 68%)}.lesson-background .lb-ring{width:117px;height:38px;right:7px;top:57px;border:5px solid var(--lb-planet-warm);border-radius:50%;transform:rotate(-28deg)}.lesson-background .lb-planet-b{width:32px;height:32px;left:34px;top:143px;background:var(--lb-planet-warm);box-shadow:inset -7px -4px color-mix(in srgb,var(--lb-planet-warm) 55%,var(--lb-space))}.lesson-background .lb-moon{width:153px;height:153px;right:-39px;bottom:-46px;border-radius:50%;background:radial-gradient(circle at 28% 30%,var(--lb-crater) 11px,transparent 12px),radial-gradient(circle at 65% 25%,var(--lb-crater) 17px,transparent 18px),radial-gradient(circle at 47% 62%,var(--lb-crater) 8px,transparent 9px),var(--lb-moon)}.lesson-background .lb-orbit{width:200px;height:78px;right:-74px;bottom:19px;border:1px solid color-mix(in srgb,var(--lb-star) 45%,transparent);border-radius:50%;transform:rotate(-20deg)}.lesson-background .lb-comet{width:80px;height:3px;left:17px;top:67px;border-radius:50%;background:linear-gradient(90deg,transparent,var(--lb-star));transform:rotate(-24deg)}.lesson-background .lb-comet:after{content:"";position:absolute;width:7px;height:7px;border-radius:50%;right:0;top:-2px;background:var(--lb-star)}.lesson-background .lb-rocket{width:23px;height:59px;border-radius:50% 50% 20% 20%;background:var(--lb-cloud);left:39px;bottom:51px;transform:rotate(25deg);box-shadow:inset -5px 0 color-mix(in srgb,var(--lb-cloud) 60%,var(--lb-planet))}.lesson-background .lb-rocket:before{content:"";position:absolute;width:12px;height:12px;border-radius:50%;top:17px;left:6px;background:var(--lb-planet-band)}.lesson-background .lb-rocket:after{content:"";position:absolute;bottom:-4px;left:-9px;width:41px;height:28px;background:var(--lb-planet-warm);clip-path:polygon(0 100%,28% 0,28% 90%,72% 90%,72% 0,100% 100%)}.lesson-background .lb-rocket-flame{width:10px;height:25px;border-radius:0 0 50% 50%;background:var(--lb-sun);left:32px;bottom:31px;transform:rotate(25deg)}.lesson-background .lb-water-light{top:0;right:0;bottom:0;left:0;background:linear-gradient(112deg,transparent 2%,color-mix(in srgb,var(--lb-cloud) 17%,transparent) 3%,transparent 13%,transparent 85%,color-mix(in srgb,var(--lb-cloud) 16%,transparent) 88%,transparent 96%)}.lesson-background .lb-wave{width:130%;height:160px;border-radius:50%;bottom:-100px;left:-25%;background:var(--lb-wave)}.lesson-background .lb-wave-b{left:25%;bottom:-111px;background:var(--lb-wave-near)}.lesson-background .lb-seabed{width:100%;height:22px;border-radius:70% 50% 0 0;bottom:0;background:var(--lb-sand)}.lesson-background .lb-bubbles{top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 7% 15%,transparent 5px,var(--lb-wave-near) 6px,transparent 7px),radial-gradient(circle at 10% 9%,transparent 3px,var(--lb-wave-near) 4px,transparent 5px),radial-gradient(circle at 92% 30%,transparent 6px,var(--lb-wave-near) 7px,transparent 8px),radial-gradient(circle at 88% 40%,transparent 3px,var(--lb-wave-near) 4px,transparent 5px),radial-gradient(circle at 15% 79%,transparent 4px,var(--lb-wave-near) 5px,transparent 6px),radial-gradient(circle at 12% 88%,transparent 2px,var(--lb-wave-near) 3px,transparent 4px)}.lesson-background .lb-fish{width:39px;height:22px;border-radius:50%;background:var(--lb-fish)}.lesson-background .lb-fish:before{content:"";position:absolute;left:-14px;top:2px;width:18px;height:18px;background:inherit;clip-path:polygon(0 0,100% 50%,0 100%)}.lesson-background .lb-fish:after{content:"";position:absolute;right:7px;top:7px;width:3px;height:3px;background:var(--lb-water);border-radius:50%}.lesson-background .lb-fish-a{right:29px;top:80px;transform:rotate(-10deg)}.lesson-background .lb-fish-b{left:38px;bottom:154px;background:var(--lb-fish-blue);transform:scale(.8) rotate(12deg)}.lesson-background .lb-fish-c{right:70px;bottom:64px;transform:scale(.65) rotate(8deg)}.lesson-background .lb-seaweed{height:123px;width:15px;background:var(--lb-weed);bottom:6px;border-radius:80% 20% 10% 10%;transform:rotate(-9deg)}.lesson-background .lb-seaweed:before,.lesson-background .lb-seaweed:after{content:"";position:absolute;width:29px;height:15px;border-radius:90% 0;background:inherit;top:24px;left:-19px;transform:rotate(20deg)}.lesson-background .lb-seaweed:after{top:65px;left:4px;transform:rotate(95deg)}.lesson-background .lb-seaweed-a{left:13px}.lesson-background .lb-seaweed-b{left:46px;height:81px;transform:rotate(8deg)}.lesson-background .lb-seaweed-c{right:9px;height:165px;transform:rotate(11deg)}.lesson-background .lb-coral{width:52px;height:84px;bottom:8px;background:var(--lb-coral);clip-path:polygon(45% 100%,45% 68%,15% 60%,8% 48%,11% 22%,22% 22%,22% 49%,44% 57%,44% 8%,54% 0,64% 6%,62% 37%,80% 27%,80% 11%,90% 11%,94% 35%,63% 50%,60% 100%)}.lesson-background .lb-coral-a{right:36px}.lesson-background .lb-coral-b{right:94px;transform:scale(.65);bottom:0}.lesson-background .lb-shell{width:33px;height:24px;bottom:14px;left:93px;border-radius:70% 70% 15% 15%;background:repeating-conic-gradient(from -45deg at 50% 100%,var(--lb-shell) 0deg 15deg,var(--lb-sand) 16deg 20deg)}.lesson-background .lb-ocean-stone{width:49px;height:20px;bottom:9px;right:152px;border-radius:80% 40% 10% 10%;background:var(--lb-wave-near)}@media(max-width:600px){.lesson-background .lb-pine-a{left:-44px}.lesson-background .lb-pine-b{left:-35px}.lesson-background .lb-pine-d{right:-30px}.lesson-background .lb-pine-c{right:-74px}.lesson-background .lb-planet-a{right:9px;top:15px;width:40px;height:40px}.lesson-background .lb-ring{right:-3px;top:24px;width:65px;height:20px;border-width:3px}.lesson-background .lb-cloud-a{left:10px;top:28px;transform:scale(.6)}.lesson-background .lb-sun{top:13px;right:13px;width:35px;height:35px}.lesson-background .lb-fish-a{top:20px;right:35px}.lesson-background .lb-fish-b{left:20px;bottom:52px}}.lesson-shell .word-card{background:var(--surface-solid)}.lesson-shell .content-main{background:var(--surface-solid);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;min-width:0}.lesson-shell .content-toc{background:var(--surface-solid)}@media(max-width:600px){.lesson-shell .content-main{padding:14px}}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--primary: #223A76;--primary-hover: #1A2D5E;--primary-light: rgba(34,58,118,.08);--primary-soft: rgba(34,58,118,.06);--primary-text: #ffffff;--primary-glow: rgba(34,58,118,.12);--accent: #DA7028;--accent-hover: #C4631F;--accent-light: rgba(218,112,40,.08);--accent-glow: rgba(218,112,40,.1);--glow: #4A6BAF;--hover-glow: rgba(74,107,175,.2);--secondary: #64748B;--success: #16A34A;--success-light: rgba(22,163,74,.08);--error: #DC2626;--error-light: rgba(220,38,38,.08);--danger: #DC2626;--warning: #D97706;--warning-light: rgba(217,119,6,.08);--mark-bg: rgba(250,204,21,.45);--info: #4682B4;--info-light: rgba(70,130,180,.08);--bg: #EEECEA;--bg-subtle: #F6F5F3;--surface: rgba(255,255,255,.72);--surface-solid: #FFFFFF;--surface-hover: rgba(255,255,255,.9);--text: #0F172A;--text-secondary: #475569;--text-tertiary: #94A3B8;--border: rgba(15,23,42,.1);--border-light: rgba(15,23,42,.05);--input-bg: rgba(255,255,255,.85);--glass-bg: rgba(255,255,255,.6);--glass-border: rgba(255,255,255,.5);--glass-blur: 20px;--sidebar-w: 232px;--sidebar-rail-w: 76px;--bg-glow-1: rgba(218,112,40,.04);--bg-glow-2: rgba(34,58,118,.03);--bg-glow-3: rgba(74,107,175,.02);--welcome-bg: radial-gradient(ellipse 50% 50% at 85% 25%, rgba(218,112,40,.15) 0%, transparent 60%), linear-gradient(135deg, #2A4A8A 0%, #223A76 60%, #1A2D5E 100%);--welcome-text: #ffffff;--welcome-orb: rgba(255,255,255,.08);--radius-sm: 10px;--radius: 14px;--radius-lg: 18px;--radius-xl: 24px;--radius-full: 9999px;--shadow-xs: 0 1px 2px rgba(0,0,0,.04);--shadow-sm: 0 2px 8px rgba(0,0,0,.05), 0 1px 2px rgba(0,0,0,.03);--shadow: 0 4px 16px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.04);--shadow-md: 0 8px 24px rgba(0,0,0,.09), 0 4px 8px rgba(0,0,0,.05);--shadow-lg: 0 16px 48px rgba(0,0,0,.12), 0 8px 16px rgba(0,0,0,.06);--shadow-glow: 0 0 30px var(--primary-glow);--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", sans-serif;--font-heading: "Poppins", "Inter", -apple-system, sans-serif;--transition: .25s cubic-bezier(.4, 0, .2, 1);--transition-spring: .4s cubic-bezier(.34, 1.56, .64, 1);--badge-standard: #2E4A8E;--badge-standard-bg: rgba(46,74,142,.09);--badge-flashcard: #0E8A7D;--badge-flashcard-bg: rgba(14,138,125,.09);--badge-gapfill: #1D8348;--badge-gapfill-bg: rgba(29,131,72,.09);--badge-matching: #7C3AED;--badge-matching-bg: rgba(124,58,237,.09);--badge-both: #C0456A;--badge-both-bg: rgba(192,69,106,.09);--badge-content: #B45309;--badge-content-bg: rgba(180,83,9,.09)}[data-theme=dark]{--primary: #4A6BAF;--primary-hover: #5E7EC4;--primary-light: rgba(74,107,175,.1);--primary-soft: rgba(74,107,175,.12);--primary-glow: rgba(74,107,175,.2);--accent: #DA7028;--accent-hover: #E8883E;--accent-light: rgba(218,112,40,.1);--accent-glow: rgba(218,112,40,.2);--glow: #5E7EC4;--hover-glow: rgba(94,126,196,.35);--secondary: #949CA9;--success: #4ADE80;--success-light: rgba(74,222,128,.1);--error: #F87171;--error-light: rgba(248,113,113,.1);--danger: #F87171;--warning: #FBBF24;--warning-light: rgba(251,191,36,.1);--mark-bg: rgba(250,204,21,.3);--info: #6CA0DC;--info-light: rgba(108,160,220,.1);--bg: #0F172A;--bg-subtle: #1E293B;--surface: rgba(30,41,59,.7);--surface-solid: #1E293B;--surface-hover: rgba(30,41,59,.88);--text: #E5E7EB;--text-secondary: #949CA9;--text-tertiary: #64748B;--border: rgba(30,41,59,.8);--border-light: rgba(30,41,59,.4);--input-bg: rgba(15,23,42,.75);--glass-bg: rgba(15,23,42,.6);--glass-border: rgba(30,41,59,.6);--glass-blur: 24px;--bg-glow-1: rgba(218,112,40,.05);--bg-glow-2: rgba(74,107,175,.04);--bg-glow-3: rgba(218,112,40,.02);--welcome-bg: radial-gradient(ellipse 80% 50% at 20% 80%, rgba(218,112,40,.3) 0%, transparent 60%), radial-gradient(ellipse 60% 60% at 80% 20%, rgba(74,107,175,.25) 0%, transparent 60%), radial-gradient(circle at 50% 50%, rgba(94,126,196,.08) 0%, transparent 50%), linear-gradient(135deg, rgba(218,112,40,.12) 0%, #0F172A 40%, rgba(74,107,175,.08) 100%);--welcome-text: #E5E7EB;--welcome-orb: rgba(218,112,40,.1);--shadow-xs: 0 1px 2px rgba(0,0,0,.3);--shadow-sm: 0 2px 8px rgba(0,0,0,.35);--shadow: 0 4px 16px rgba(0,0,0,.4);--shadow-md: 0 8px 24px rgba(0,0,0,.45);--shadow-lg: 0 16px 48px rgba(0,0,0,.5);--shadow-glow: 0 0 40px var(--primary-glow);--badge-standard: #6B8FD4;--badge-standard-bg: rgba(107,143,212,.13);--badge-flashcard: #34D1BF;--badge-flashcard-bg: rgba(52,209,191,.13);--badge-gapfill: #4ADE80;--badge-gapfill-bg: rgba(74,222,128,.13);--badge-matching: #A78BFA;--badge-matching-bg: rgba(167,139,250,.13);--badge-both: #F472B6;--badge-both-bg: rgba(244,114,182,.13);--badge-content: #FBBF24;--badge-content-bg: rgba(251,191,36,.13)}@media(prefers-color-scheme:dark){[data-theme=system]{--primary: #4A6BAF;--primary-hover: #5E7EC4;--primary-light: rgba(74,107,175,.1);--primary-soft: rgba(74,107,175,.12);--primary-glow: rgba(74,107,175,.2);--accent: #DA7028;--accent-hover: #E8883E;--accent-light: rgba(218,112,40,.1);--accent-glow: rgba(218,112,40,.2);--glow: #5E7EC4;--hover-glow: rgba(94,126,196,.35);--secondary: #949CA9;--success: #4ADE80;--success-light: rgba(74,222,128,.1);--error: #F87171;--error-light: rgba(248,113,113,.1);--danger: #F87171;--warning: #FBBF24;--warning-light: rgba(251,191,36,.1);--mark-bg: rgba(250,204,21,.3);--info: #6CA0DC;--info-light: rgba(108,160,220,.1);--bg: #0F172A;--bg-subtle: #1E293B;--surface: rgba(30,41,59,.7);--surface-solid: #1E293B;--surface-hover: rgba(30,41,59,.88);--text: #E5E7EB;--text-secondary: #949CA9;--text-tertiary: #64748B;--border: rgba(30,41,59,.8);--border-light: rgba(30,41,59,.4);--input-bg: rgba(15,23,42,.75);--glass-bg: rgba(15,23,42,.6);--glass-border: rgba(30,41,59,.6);--glass-blur: 24px;--bg-glow-1: rgba(218,112,40,.05);--bg-glow-2: rgba(74,107,175,.04);--bg-glow-3: rgba(218,112,40,.02);--welcome-bg: radial-gradient(ellipse 80% 50% at 20% 80%, rgba(218,112,40,.3) 0%, transparent 60%), radial-gradient(ellipse 60% 60% at 80% 20%, rgba(74,107,175,.25) 0%, transparent 60%), radial-gradient(circle at 50% 50%, rgba(94,126,196,.08) 0%, transparent 50%), linear-gradient(135deg, rgba(218,112,40,.12) 0%, #0F172A 40%, rgba(74,107,175,.08) 100%);--welcome-text: #E5E7EB;--welcome-orb: rgba(218,112,40,.1);--shadow-xs: 0 1px 2px rgba(0,0,0,.3);--shadow-sm: 0 2px 8px rgba(0,0,0,.35);--shadow: 0 4px 16px rgba(0,0,0,.4);--shadow-md: 0 8px 24px rgba(0,0,0,.45);--shadow-lg: 0 16px 48px rgba(0,0,0,.5);--shadow-glow: 0 0 40px var(--primary-glow);--badge-standard: #6B8FD4;--badge-standard-bg: rgba(107,143,212,.13);--badge-flashcard: #34D1BF;--badge-flashcard-bg: rgba(52,209,191,.13);--badge-gapfill: #4ADE80;--badge-gapfill-bg: rgba(74,222,128,.13);--badge-matching: #A78BFA;--badge-matching-bg: rgba(167,139,250,.13);--badge-both: #F472B6;--badge-both-bg: rgba(244,114,182,.13)}}html{transition:background-color .4s ease,color .4s ease}html.theme-switching *,html.theme-switching *:before,html.theme-switching *:after{transition:background-color .3s ease,border-color .3s ease,color .2s ease,box-shadow .3s ease}body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;position:relative;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse 60% 50% at 15% 20%,var(--bg-glow-1) 0%,transparent 70%),radial-gradient(ellipse 50% 40% at 85% 30%,var(--bg-glow-2) 0%,transparent 70%),radial-gradient(ellipse 40% 50% at 50% 85%,var(--bg-glow-3) 0%,transparent 70%);pointer-events:none;z-index:0}#root{position:relative;z-index:1;display:flex;flex-direction:column;min-height:100vh;width:100%}.content-bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;pointer-events:none;background:radial-gradient(ellipse 60% 50% at 8% 0%,rgba(218,112,40,.13) 0%,transparent 60%),radial-gradient(ellipse 55% 50% at 96% 6%,rgba(74,107,175,.18) 0%,transparent 62%),radial-gradient(ellipse 72% 55% at 88% 100%,rgba(34,58,118,.14) 0%,transparent 66%),radial-gradient(ellipse 50% 45% at 10% 96%,rgba(218,112,40,.09) 0%,transparent 60%),linear-gradient(165deg,#f4f2f1,#ecebf3 46%,#e6ecf6)}[data-theme=dark] .content-bg{background:radial-gradient(ellipse 60% 50% at 8% 0%,rgba(218,112,40,.16) 0%,transparent 60%),radial-gradient(ellipse 55% 50% at 96% 6%,rgba(74,107,175,.2) 0%,transparent 62%),radial-gradient(ellipse 72% 55% at 88% 100%,rgba(94,126,196,.14) 0%,transparent 66%),radial-gradient(ellipse 50% 45% at 10% 96%,rgba(218,112,40,.1) 0%,transparent 60%),linear-gradient(165deg,#131c30,#0f172a 46%,#131e37)}@media(prefers-color-scheme:dark){[data-theme=system] .content-bg{background:radial-gradient(ellipse 60% 50% at 8% 0%,rgba(218,112,40,.16) 0%,transparent 60%),radial-gradient(ellipse 55% 50% at 96% 6%,rgba(74,107,175,.2) 0%,transparent 62%),radial-gradient(ellipse 72% 55% at 88% 100%,rgba(94,126,196,.14) 0%,transparent 66%),radial-gradient(ellipse 50% 45% at 10% 96%,rgba(218,112,40,.1) 0%,transparent 60%),linear-gradient(165deg,#131c30,#0f172a 46%,#131e37)}}a{color:var(--primary);text-decoration:none;transition:color var(--transition)}a:hover{color:var(--primary-hover)}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);letter-spacing:-.02em;font-feature-settings:"ss01","ss02"}h1{font-size:1.7rem;font-weight:800}h2{font-size:1.45rem;font-weight:700}h3{font-size:1.25rem;font-weight:700}::selection{background:var(--primary);color:#fff}.loading-screen{display:flex;align-items:center;justify-content:center;height:100vh;font-size:1.2rem;color:var(--text-secondary)}.app-content{display:flex;flex-direction:column;flex:1;min-width:0}.container{width:100%;max-width:1120px;margin:0 auto;padding:1.5rem 1.25rem;flex:1}.navbar{background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border-bottom:1px solid var(--glass-border);position:sticky;top:0;z-index:100;transition:background .3s ease,border-color .3s ease}.nav-container{max-width:1120px;margin:0 auto;padding:0 1.5rem;display:flex;align-items:center;height:64px;gap:1rem}.logo{font-size:1.3rem;font-weight:800;letter-spacing:-.03em;color:var(--primary);white-space:nowrap;flex-shrink:0;text-decoration:none;cursor:pointer;transition:opacity var(--transition)}a.logo:hover{opacity:.8}.nav-menu{display:flex;align-items:center;flex:1;min-width:0;margin-left:1.5rem;gap:1rem}.nav-links{display:flex;align-items:center;gap:.25rem;min-width:0}.nav-link{display:inline-flex;align-items:center;gap:.55rem;color:var(--text-secondary);text-decoration:none;padding:.5rem .85rem;border-radius:var(--radius-sm);font-size:.875rem;font-weight:500;transition:all var(--transition);white-space:nowrap;position:relative}.nav-link-icon{font-size:1.05rem;line-height:1;flex-shrink:0}.nav-link:hover{color:var(--primary);background:var(--primary-light)}.nav-link.active{color:var(--primary);background:var(--primary-light);font-weight:600}.nav-link-badge{position:absolute;top:-4px;right:-10px;background:linear-gradient(135deg,#ef4444,#e3721d);color:#fff;border-radius:var(--radius-full);font-size:.65rem;font-weight:700;min-width:18px;height:18px;padding:0 4px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #ef444466,0 0 20px var(--primary-glow)}.nav-link-badge:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;box-shadow:0 0 15px var(--primary-glow);animation:pulse-halo 2s ease-in-out infinite;pointer-events:none}.nav-section-title{padding:.75rem .85rem .25rem;font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-tertiary);white-space:nowrap}.nav-section-title.nav-section-teaching{color:var(--accent);padding-top:.5rem}.nav-link-teaching{box-shadow:inset 3px 0 0 var(--accent)}.nav-link-teaching:hover,.nav-link-teaching.active{color:var(--accent);background:var(--accent-light)}.nav-right{display:flex;align-items:center;gap:.75rem;flex-shrink:0;margin-left:auto}#username-display{font-size:.875rem;color:var(--text-secondary);font-weight:500}.nav-toggle{display:none;background:var(--glass-bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.4rem .6rem;font-size:1.25rem;cursor:pointer;color:var(--text);line-height:1}.nav-settings-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-sm);font-size:1.15rem;color:var(--text-secondary);text-decoration:none;transition:all var(--transition);flex-shrink:0}.nav-settings-btn:hover,.nav-settings-btn.active{color:var(--primary);background:var(--primary-light);box-shadow:0 0 12px var(--primary-glow)}.role-badge{padding:.2rem .6rem;border-radius:var(--radius-full);font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em}.role-student{background:var(--info-light);color:var(--info)}.role-teacher{background:var(--warning-light);color:var(--warning)}.notif-wrap{position:relative;display:inline-flex;flex-shrink:0}.notif-bell{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-sm);background:transparent;border:none;cursor:pointer;color:var(--text-secondary);transition:all var(--transition)}.notif-bell:hover{color:var(--primary);background:var(--primary-light);box-shadow:0 0 12px var(--primary-glow)}.notif-badge{position:absolute;top:-2px;right:-2px;background:linear-gradient(135deg,#ef4444,#e3721d);color:#fff;border-radius:var(--radius-full);font-size:.6rem;font-weight:700;min-width:16px;height:16px;padding:0 4px;line-height:1;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #ef444466}.notif-panel{position:absolute;top:calc(100% + 10px);right:0;width:340px;max-width:calc(100vw - 32px);background:var(--surface-solid);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);z-index:1000;overflow:hidden}.notif-panel-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.75rem 1rem;border-bottom:1px solid var(--border);font-weight:700;font-size:.9rem;color:var(--text)}.notif-markall{background:none;border:none;cursor:pointer;padding:0;color:var(--primary);font-size:.75rem;font-weight:600}.notif-markall:hover{text-decoration:underline}.notif-list{max-height:380px;overflow-y:auto}.notif-empty{padding:1.5rem 1rem;text-align:center;color:var(--text-secondary);font-size:.85rem}.notif-item{display:flex;align-items:flex-start;gap:.6rem;width:100%;padding:.7rem 1rem;background:none;border:none;cursor:pointer;text-align:left;border-bottom:1px solid var(--border);transition:background var(--transition)}.notif-item:last-child{border-bottom:none}.notif-item:hover{background:var(--surface-hover)}.notif-item.unread{background:var(--primary-light)}.notif-item.unread:hover{background:var(--primary-soft)}.notif-item-icon{font-size:1.1rem;line-height:1.3;flex-shrink:0;width:1.5rem;text-align:center}.notif-item-body{display:flex;flex-direction:column;gap:.15rem;min-width:0;flex:1}.notif-item-title{font-weight:600;font-size:.85rem;color:var(--text)}.notif-item-detail{font-size:.8rem;color:var(--text-secondary);word-break:break-word}.notif-item-time{font-size:.7rem;color:var(--text-secondary);opacity:.8}.notif-item-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0;margin-top:.35rem}.sidebar-collapse-btn{display:none}@media(min-width:769px){.app-sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);border-bottom:none;border-right:1px solid var(--glass-border);transition:background .3s ease,border-color .3s ease,width .2s ease}.app-sidebar.collapsed{width:var(--sidebar-rail-w)}.sidebar-collapse-btn{display:flex;align-items:center;justify-content:center;position:absolute;top:1.1rem;right:.6rem;width:30px;height:30px;border-radius:var(--radius-sm);background:transparent;border:none;cursor:pointer;color:var(--text-secondary);font-size:1.1rem;line-height:1;transition:color var(--transition),background var(--transition);z-index:1}.sidebar-collapse-btn:hover{color:var(--primary);background:var(--primary-light)}.app-sidebar.collapsed .sidebar-collapse-btn{right:50%;transform:translate(50%)}.app-sidebar.collapsed .logo{display:none}.app-sidebar.collapsed .nav-container{padding:3.3rem .4rem 1rem}.app-sidebar.collapsed .nav-link{flex-direction:column;gap:.3rem;padding:.55rem .2rem}.app-sidebar.collapsed .nav-link-icon{font-size:1.3rem}.app-sidebar.collapsed .nav-section-title{font-size:0;padding:0;margin:.4rem .6rem;border-top:1px solid var(--border)}.app-sidebar.collapsed .nav-section-title.nav-section-teaching{border-top-color:var(--accent)}.app-sidebar.collapsed .nav-link-label{font-size:.62rem;font-weight:500;max-width:100%;overflow:hidden;text-overflow:ellipsis}.app-sidebar.collapsed .nav-link-badge{top:2px;right:8px;transform:none}.app-sidebar.collapsed .nav-right{flex-direction:column;align-items:center;gap:.5rem}.app-sidebar.collapsed #username-display,.app-sidebar.collapsed .role-badge,.app-sidebar.collapsed .nav-logout{display:none}.app-sidebar.collapsed .nav-right .nav-settings-btn{margin-left:0}.app-sidebar .nav-container{max-width:none;height:100%;margin:0;padding:1.25rem .85rem 1rem;flex-direction:column;align-items:stretch;gap:1.25rem}.app-sidebar .logo{padding:0 .5rem;align-self:flex-start}.app-sidebar .nav-menu{flex-direction:column;align-items:stretch;margin-left:0;gap:1rem;min-height:0}.app-sidebar .nav-links{flex-direction:column;align-items:stretch;gap:.2rem;overflow-y:auto}.app-sidebar .nav-link{padding:.6rem .85rem}.app-sidebar .nav-link-badge{top:50%;right:.85rem;transform:translateY(-50%)}.app-sidebar .nav-right{margin-left:0;margin-top:auto;flex-wrap:wrap;gap:.6rem .7rem;padding-top:.85rem;border-top:1px solid var(--border)}.app-sidebar #username-display{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.app-sidebar .nav-right .nav-settings-btn{margin-left:auto}.app-sidebar .nav-right .nav-logout{flex:1 0 100%;justify-content:center}.app-sidebar .notif-panel{top:auto;bottom:-4px;right:auto;left:calc(100% + 14px)}.app-content{margin-left:var(--sidebar-w);transition:margin-left .2s ease}.app-content.collapsed{margin-left:var(--sidebar-rail-w)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.65rem 1.3rem;border:none;border-radius:var(--radius-sm);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition);text-decoration:none;line-height:1.4;white-space:nowrap;position:relative;overflow:hidden}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}.btn:disabled:hover,.btn:disabled:active{transform:none;box-shadow:none}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px var(--primary-glow)}.btn-primary:hover{color:#fff;box-shadow:0 0 24px var(--hover-glow),0 0 0 3px var(--hover-glow),0 4px 14px var(--primary-glow);transform:translateY(-1px)}.btn-secondary{background:var(--accent);color:#fff;box-shadow:0 4px 14px var(--accent-glow)}.btn-secondary:hover{color:#fff;box-shadow:0 0 24px var(--hover-glow),0 0 0 3px var(--hover-glow),0 4px 14px var(--accent-glow);transform:translateY(-1px)}.btn-success{background:var(--success);color:#fff;box-shadow:0 4px 14px #16a34a40}.btn-success:hover{box-shadow:0 6px 20px #16a34a59;transform:translateY(-1px);color:#fff}.btn-success:disabled{background:var(--text-tertiary)}.btn-error,.btn-danger{background:var(--error);color:#fff;box-shadow:0 4px 14px #dc262640}.btn-ghost{background:transparent;color:var(--text-secondary);border:1.5px solid var(--border)}.btn-ghost:hover{color:var(--text);border-color:var(--primary);background:var(--primary-light);box-shadow:0 0 16px var(--hover-glow)}.btn-outline{background:transparent;border:2px solid var(--accent);color:var(--accent)}.btn-outline:hover{background:var(--accent);color:#fff;box-shadow:0 0 20px var(--hover-glow)}.btn-large{padding:.9rem 2.25rem;font-size:1rem;border-radius:var(--radius)}.btn-sm{padding:.35rem .8rem;font-size:.8rem}.form-group{margin-bottom:1.25rem}.form-group label{display:block;margin-bottom:.45rem;font-weight:600;font-size:.95rem;color:var(--text);letter-spacing:-.01em}.form-group input,.form-group select,.form-group textarea,input,select,textarea{width:100%;padding:.85rem 1rem;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:1rem;font-family:var(--font);transition:border-color var(--transition),box-shadow var(--transition),background var(--transition);background:var(--input-bg);color:var(--text)}.form-group input:focus,.form-group select:focus,.form-group textarea:focus,input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light),0 0 16px var(--primary-glow)}.autogrow-textarea{display:block;resize:none;overflow-x:hidden;overflow-y:hidden;line-height:1.5;white-space:pre-wrap;overflow-wrap:break-word}.password-input-wrapper{position:relative}.password-input-wrapper input{padding-right:3rem}.password-toggle{position:absolute;top:0;right:0;width:3rem;height:100%;display:flex;align-items:center;justify-content:center;background:none;border:none;padding:0;color:var(--text-tertiary);cursor:pointer;border-radius:var(--radius-sm);transition:color var(--transition)}.password-toggle:hover{color:var(--text-secondary)}.password-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:-2px}.auth-page{display:grid;grid-template-columns:1fr 1fr;min-height:100vh;width:100%}.auth-brand{background:var(--welcome-bg);display:flex;align-items:center;justify-content:center;padding:3rem;position:relative;overflow:hidden}.auth-brand:before{content:"";position:absolute;top:10%;left:10%;width:300px;height:300px;background:var(--welcome-orb);border-radius:50%;filter:blur(80px);pointer-events:none}.auth-brand:after{content:"";position:absolute;bottom:10%;right:15%;width:200px;height:200px;background:var(--welcome-orb);border-radius:50%;filter:blur(60px);pointer-events:none}.auth-brand-content{position:relative;z-index:1;color:var(--welcome-text);max-width:480px}.auth-brand-title{font-size:3rem;font-weight:800;letter-spacing:-.03em;margin-bottom:.5rem;color:var(--welcome-text)}.auth-brand-subtitle{font-size:1.25rem;opacity:.85;margin-bottom:2.5rem}.auth-brand-features{display:flex;flex-direction:column;gap:1.25rem}.auth-brand-feature{display:flex;align-items:center;gap:1rem;font-size:1.1rem;opacity:.9}.auth-brand-icon{font-size:1.5rem;flex-shrink:0;width:48px;height:48px;border-radius:12px;background:#ffffff1f;display:flex;align-items:center;justify-content:center}.auth-form-side{display:flex;align-items:center;justify-content:center;padding:3rem;position:relative;background:var(--bg)}.auth-lang-toggle{position:absolute;top:1.5rem;right:1.5rem;z-index:2}.auth-form-wrapper{width:100%;max-width:480px}.auth-form-title{font-size:2rem;font-weight:800;letter-spacing:-.02em;color:var(--text);margin-bottom:2rem}.auth-form-wrapper input,.auth-form-wrapper select{padding:1.1rem 1.2rem;font-size:1.1rem;min-height:54px}.auth-form-wrapper .form-group label{font-size:1.05rem}.auth-submit-btn{width:100%;padding:1.15rem;font-size:1.15rem;min-height:56px;margin-top:.5rem}.auth-divider{display:flex;align-items:center;gap:1rem;margin:1.25rem 0;color:var(--text-tertiary);font-size:.85rem}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--border)}.auth-yandex-btn{width:100%;padding:.9rem 1.15rem;font-size:1rem;display:flex;align-items:center;justify-content:center;gap:.6rem;background:var(--surface-solid);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);font-weight:600;cursor:pointer;transition:all var(--transition);min-height:50px}.auth-yandex-btn:hover{border-color:var(--primary);background:var(--primary-light)}.auth-switch-link{text-align:center;margin-top:1.5rem;font-size:.95rem;color:var(--text-secondary)}.auth-consent{display:flex;flex-direction:column;gap:.6rem;margin:0 0 1.25rem}.auth-consent-row{display:flex;align-items:flex-start;gap:.55rem;font-size:.82rem;line-height:1.55;color:var(--text-secondary);cursor:pointer}.auth-consent-row input[type=checkbox]{margin-top:.15rem;flex-shrink:0;cursor:pointer}.auth-consent-row a{color:var(--accent);text-decoration:underline}.auth-consent-note{margin:0;font-size:.75rem;line-height:1.5;color:var(--text-tertiary, var(--text-secondary));opacity:.85}.auth-password-hint{margin-top:.4rem}.registration-email-hint{margin:.4rem 0 0;font-size:.8rem;line-height:1.5;color:var(--text-secondary)}.auth-legal-links{text-align:center;margin-top:.75rem;font-size:.75rem;color:var(--text-secondary)}.auth-legal-links a{color:var(--text-secondary);text-decoration:none}.auth-legal-links a:hover{color:var(--accent)}.auth-container{max-width:640px;margin:6vh auto;background:var(--glass-bg);padding:3rem;border-radius:var(--radius-xl);box-shadow:var(--shadow-lg),0 0 60px var(--primary-glow);border:1px solid var(--glass-border);position:relative;overflow:hidden}.subtitle{text-align:center;color:var(--text-secondary);margin-bottom:2rem;font-size:.9rem;position:relative}.error-message{padding:.85rem 1rem;border-radius:var(--radius-sm);margin-top:1rem;text-align:center;font-size:.875rem;font-weight:500;background:var(--error-light);color:var(--error);border:1px solid rgba(220,38,38,.15)}.success-message{padding:.85rem 1rem;border-radius:var(--radius-sm);margin-top:1rem;text-align:center;font-size:.875rem;font-weight:500;background:var(--success-light);color:var(--success);border:1px solid rgba(22,163,74,.15)}.feedback-message{padding:.85rem;border-radius:var(--radius-sm);margin:1rem 0 0;text-align:center;font-weight:500;overflow-wrap:break-word;word-break:break-word}.feedback-message.success{background:var(--success-light);color:var(--success)}.feedback-message.error{background:var(--error-light);color:var(--error)}.welcome-section{text-align:center;padding:2rem 1.5rem 1.75rem;background:var(--welcome-bg);color:var(--welcome-text);border-radius:var(--radius-xl);margin-bottom:1.5rem;position:relative;overflow:hidden;box-shadow:0 8px 32px var(--primary-glow)}.welcome-section:before{content:"";position:absolute;top:-50%;right:-20%;width:400px;height:400px;background:var(--welcome-orb, rgba(255,255,255,.08));border-radius:50%;will-change:transform;animation:float 8s ease-in-out infinite}.welcome-section:after{content:"";position:absolute;bottom:-40%;left:-15%;width:300px;height:300px;background:var(--welcome-orb, rgba(255,255,255,.05));border-radius:50%;will-change:transform;animation:float 10s ease-in-out infinite reverse}.welcome-section h2{font-size:1.5rem;margin-bottom:.3rem;font-weight:800;position:relative;letter-spacing:-.02em}.welcome-section p{font-size:1rem;opacity:.85;margin-bottom:0;position:relative}.action-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:.85rem;margin-bottom:2rem}.action-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:1.15rem;text-align:center;cursor:pointer;transition:all var(--transition);box-shadow:var(--shadow-sm);position:relative;overflow:hidden;display:flex;flex-direction:column;align-items:center}.action-card:after{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at center,var(--primary-glow) 0%,transparent 60%);opacity:0;transition:opacity .4s ease;pointer-events:none}.action-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md),0 0 24px var(--primary-glow);border-color:var(--primary)}.action-card:hover:after{opacity:.3}.action-card-icon{width:46px;height:46px;border-radius:var(--radius);display:inline-flex;align-items:center;justify-content:center;font-size:1.35rem;margin-bottom:.6rem;transition:transform var(--transition-spring)}.action-card:hover .action-card-icon{transform:scale(1.1)}.action-card-icon.learn{background:var(--accent-light);color:var(--accent)}.action-card-icon.dict{background:var(--success-light);color:var(--success)}.action-card-icon.repeat{background:var(--warning-light);color:var(--warning)}.action-card h3{font-size:.95rem;font-weight:700;margin-bottom:.3rem;color:var(--text);position:relative}.action-card p{font-size:.82rem;color:var(--text-secondary);margin-bottom:.75rem;line-height:1.5;position:relative;min-height:3.5em}.badge-count{display:inline-block;padding:0;background:none;color:var(--text-secondary);font-size:.82rem;font-weight:500;letter-spacing:-.01em}.card-context-tag{display:inline-flex;align-items:center;gap:.35rem;max-width:100%;margin:-.35rem 0 .85rem;padding:.2rem .6rem;border-radius:var(--radius-full);background:var(--primary-light);border:1px solid var(--border);font-size:.72rem;line-height:1.2}.card-context-tag .card-context-tag-label{color:var(--text-tertiary);font-weight:600;text-transform:uppercase;letter-spacing:.04em;flex-shrink:0}.card-context-tag .card-context-tag-value{color:var(--primary);font-weight:700;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lessons-section{margin-bottom:2rem}.lessons-section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.25rem}.lessons-section-header h3{font-size:1.15rem;font-weight:700;color:var(--text);margin:0;letter-spacing:-.01em}.recent-lesson-row:hover{box-shadow:var(--shadow),0 0 16px var(--primary-glow);transform:translateY(-1px);border-color:var(--primary)!important}.lessons-grid{display:flex;flex-direction:column;gap:.5rem}.lesson-card{background:var(--glass-bg);padding:.75rem 1rem;border-radius:var(--radius);box-shadow:var(--shadow-xs);border:1px solid var(--glass-border);transition:all var(--transition);cursor:pointer;display:flex;align-items:center;gap:1rem}.lesson-card:hover{box-shadow:var(--shadow-md),0 0 20px var(--primary-glow);border-color:var(--primary)}.lesson-card h4{font-size:.92rem;font-weight:700;margin:0;color:var(--text);letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson-cover{position:relative;overflow:hidden;border-radius:calc(var(--radius) - 2px);flex-shrink:0}.lesson-cover img{width:100%;height:100%;object-fit:cover;display:block}.lesson-cover-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.lesson-cover-banner{width:100%;height:110px}.assignment-card .lesson-cover-banner{margin-bottom:.55rem}.lesson-cover-banner .lesson-cover-placeholder span{font-size:2rem;opacity:.85;filter:drop-shadow(0 1px 2px rgba(0,0,0,.25))}.lesson-cover-thumb{width:48px;height:48px}.lesson-cover-thumb .lesson-cover-placeholder span{font-size:1.25rem;opacity:.85}.lesson-card-info{flex:1;min-width:0}.lesson-card-badges{display:flex;gap:.3rem;flex-wrap:wrap;flex-shrink:0}.lesson-meta{display:flex;gap:.6rem;margin-top:.25rem;font-size:.78rem;color:var(--text-secondary)}.lesson-status{display:inline-block;padding:.2rem .65rem;border-radius:var(--radius-full);font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.03em}.lesson-status.in-progress{background:var(--warning-light);color:var(--warning)}.lesson-status.completed{background:var(--success-light);color:var(--success)}.lesson-status.assigned{background:var(--primary-light);color:var(--primary)}.badge-type{padding:.15rem .5rem;border-radius:999px;font-size:.7rem;font-weight:600;white-space:nowrap}.badge-type-standard{background:var(--badge-standard-bg);color:var(--badge-standard)}.badge-type-flashcard{background:var(--badge-flashcard-bg);color:var(--badge-flashcard)}.badge-type-gapfill{background:var(--badge-gapfill-bg);color:var(--badge-gapfill)}.badge-type-matching{background:var(--badge-matching-bg);color:var(--badge-matching)}.badge-type-both{background:var(--badge-both-bg);color:var(--badge-both)}.badge-type-content{background:var(--badge-content-bg);color:var(--badge-content)}.badge-overflow{background:var(--primary);color:var(--primary-text);font-size:.65rem;min-width:28px;text-align:center;flex-shrink:0}.practice-banner{max-width:800px;margin:0 auto 1rem;padding:.55rem .9rem;border-radius:var(--radius);border:1px dashed var(--border);background:var(--surface);color:var(--text-secondary);font-size:.82rem;text-align:center}.resume-banner{margin:0 0 1.25rem;padding:.9rem 1.1rem;display:flex;align-items:center;justify-content:space-between;gap:.75rem 1rem;flex-wrap:wrap;border-radius:var(--radius-lg);border:1px solid var(--glass-border);border-left:4px solid var(--primary);background:var(--glass-bg);box-shadow:var(--shadow-md)}.resume-banner-text{display:flex;flex-direction:column;gap:.2rem;flex:1 1 220px;min-width:0;font-size:.88rem;color:var(--text-secondary);line-height:1.45}.resume-banner-text strong{color:var(--text);font-size:.98rem}.plan-banner{margin:0 0 1.25rem;padding:.7rem 1rem;display:flex;align-items:center;justify-content:space-between;gap:.5rem 1rem;flex-wrap:wrap;border-radius:var(--radius);border:1px solid var(--glass-border);border-left:4px solid var(--accent);background:var(--glass-bg);font-size:.9rem;color:var(--text)}.plan-banner>span{flex:1 1 220px;min-width:0}.plan-banner-urgent{border-left-color:var(--error)}.attach-banner{max-width:800px;margin:0 auto 1rem;padding:.6rem .9rem;border-radius:var(--radius);border:1px solid var(--border);border-left:3px solid var(--accent);background:var(--surface);color:var(--text-secondary);font-size:.85rem;line-height:1.45}.attach-banner strong{color:var(--text);font-weight:600}.badge-type-action{border:none;font-family:inherit;line-height:inherit;cursor:pointer;transition:transform .12s ease,box-shadow .12s ease,filter .12s ease}.badge-type-action:before{content:"▶";font-size:.6em;margin-right:0;width:0;opacity:0;overflow:hidden;transition:width .12s ease,margin-right .12s ease,opacity .12s ease;display:inline-block;vertical-align:baseline}.badge-type-action:hover,.badge-type-action:focus-visible{transform:translateY(-1px);box-shadow:var(--shadow-sm);filter:brightness(.97)}.badge-type-action:hover:before,.badge-type-action:focus-visible:before{width:.75em;margin-right:.3em;opacity:1}.badge-type-action:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.badge-type-action:active{transform:translateY(0)}.badge-type-action:disabled{cursor:default;opacity:.6;transform:none;box-shadow:none}.badge-type-action:disabled:before{width:0;margin-right:0;opacity:0}.lesson-source-tag{display:inline-block;padding:.15rem .5rem;border-radius:999px;font-size:.68rem;font-weight:600;letter-spacing:.02em;white-space:nowrap}.lesson-source-standard{background:var(--primary-light);color:var(--primary)}.lesson-source-expression{background:var(--accent-light);color:var(--accent)}.lesson-source-repeat{background:var(--warning-light);color:var(--warning)}.lesson-source-dictionary{background:var(--info-light);color:var(--info)}.lesson-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}.lesson-header h4{margin:0}.lesson-progress{margin-bottom:1.5rem}.progress-bar{width:100%;height:6px;background:var(--border);border-radius:var(--radius-full);overflow:hidden;margin-bottom:.5rem}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:var(--radius-full);transition:width .5s cubic-bezier(.4,0,.2,1);box-shadow:0 0 10px var(--primary-glow)}.progress-text{text-align:center;color:var(--text-secondary);font-weight:500;font-size:.85rem}.step-content{background:var(--glass-bg);padding:1.25rem 1.5rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--glass-border);min-height:320px;max-width:600px;margin:0 auto}.step-content h2{margin-bottom:.25rem;color:var(--text);font-size:1.15rem;font-weight:800;letter-spacing:-.02em}.step-description{color:var(--text-secondary);margin-bottom:1rem;font-size:.85rem}.words-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:.65rem;margin-bottom:1.25rem}.word-item{padding:1rem;background:var(--glass-bg);border-radius:var(--radius);border:1.5px solid var(--border);transition:all var(--transition)}.word-item:hover{border-color:var(--primary);box-shadow:0 0 16px var(--primary-glow);transform:translateY(-2px)}.word-item h3{font-size:1.1rem;color:var(--primary);margin-bottom:.1rem;font-weight:700}.word-item .transcription{color:var(--text-tertiary);font-style:italic;font-size:.8rem;margin-bottom:.4rem}.word-item .translation{font-size:1rem;color:var(--text);font-weight:500}.word-status{display:inline-block;padding:.15rem .5rem;border-radius:var(--radius-full);font-size:.7rem;font-weight:600;text-transform:uppercase;margin-top:.4rem}.status-new{background:var(--info-light);color:var(--info)}.status-learning{background:var(--warning-light);color:var(--warning)}.status-learned{background:var(--success-light);color:var(--success)}.word-card{margin:0 0 1rem;padding:1.25rem;background:var(--glass-bg);border-radius:var(--radius-lg);border:1.5px solid var(--glass-border);text-align:center;min-height:200px}.flip-card{position:relative;perspective:1200px;cursor:pointer;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.flip-card-inner{display:grid;transform-style:preserve-3d;transition:transform .45s cubic-bezier(.4,.2,.2,1)}.flip-card.is-flipped .flip-card-inner{transform:rotateY(180deg)}.flip-card-face{grid-area:1 / 1;-webkit-backface-visibility:hidden;backface-visibility:hidden}.flip-card-back{transform:rotateY(180deg)}.flip-card:not(.is-flipped) .flip-card-back,.flip-card.is-flipped .flip-card-front{pointer-events:none}@media(prefers-reduced-motion:reduce){.flip-card-inner{transition:none}}.word-display{font-size:1.7rem;font-weight:800;letter-spacing:-.02em;color:var(--primary);margin-bottom:.5rem;overflow-wrap:break-word;word-break:break-word}.word-buttons{display:flex;gap:.75rem;justify-content:center;margin-top:1rem}.word-buttons .btn{flex:1;min-width:100px;min-height:38px;font-size:.85rem}.mark-btn{width:52px;height:52px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.4rem;font-weight:700;line-height:1;padding:0;outline:none;font-family:Segoe UI Symbol,Apple Symbols,sans-serif;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.mark-btn:active{transform:scale(.9)}.mark-btn-correct{border:2.5px solid var(--primary);background:var(--primary-light);color:var(--primary)}.mark-btn-correct:hover{background:var(--primary);color:#fff;box-shadow:0 4px 14px #223a7640}.mark-btn-incorrect{border:2.5px solid var(--accent);background:var(--accent-light);color:var(--accent)}.mark-btn-incorrect:hover{background:var(--accent);color:#fff;box-shadow:0 4px 14px #da702840}.word-buttons.mark-buttons{flex-direction:row;flex-wrap:nowrap;gap:1rem}.options-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.5rem;margin-top:.75rem}.option-button{padding:.65rem .9rem;background:var(--glass-bg);border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;font-size:.9rem;transition:all var(--transition);color:var(--text);font-weight:500;min-height:44px;display:flex;align-items:center;justify-content:center;overflow-wrap:break-word;word-break:break-word}@media(hover:hover){.option-button:hover{border-color:var(--primary);background:var(--primary-light);box-shadow:0 0 16px var(--primary-glow);transform:translateY(-1px)}}.word-diff{display:flex;flex-wrap:wrap;gap:.15rem .35rem;align-items:baseline;padding:.5rem .6rem;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);font-size:.9rem;line-height:1.8}.word-diff-pair{display:inline-flex;gap:.2rem;align-items:baseline}.word-diff-word.is-wrong,.word-diff-word.is-extra{color:var(--error);text-decoration:line-through;font-weight:600}.word-diff-word.is-expected,.word-diff-word.is-missing{color:var(--success);font-weight:600}.word-diff-word.is-missing{text-decoration:underline;text-decoration-style:dashed}.video-quiz-frame{position:relative;width:100%;aspect-ratio:16 / 9;border-radius:var(--radius);overflow:hidden;background:#000;border:1px solid var(--border)}.video-quiz-frame iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0}.video-quiz-fallback{font-size:.8rem;color:var(--text-secondary);align-self:flex-start}.video-quiz-checkpoint{padding:.6rem .7rem;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);transition:border-color var(--transition),box-shadow var(--transition)}.video-quiz-checkpoint.is-active{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.wo-line{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;min-height:52px;padding:.5rem .6rem;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);border-bottom:2px solid var(--primary)}.wo-line-empty{color:var(--text-secondary);font-size:.85rem}.wo-bank{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;min-height:44px}.wo-chip{padding:.45rem .8rem;min-height:40px;background:var(--glass-bg);color:var(--text);border:2px solid var(--border);border-radius:var(--radius);font-size:.95rem;font-weight:500;font-family:inherit;cursor:grab;transition:all var(--transition);overflow-wrap:break-word;word-break:break-word}.wo-chip:disabled{cursor:default;opacity:.85}.wo-chip-placed{border-color:var(--primary);background:var(--primary-light);color:var(--primary);font-weight:600}.wo-chip.is-drop{border-left-color:var(--accent);border-left-width:4px}@media(hover:hover){.wo-chip:not(:disabled):hover{border-color:var(--primary);box-shadow:0 0 16px var(--primary-glow);transform:translateY(-1px)}}.wo-drop-end{flex:1;min-width:2rem;align-self:stretch;border-radius:var(--radius)}.wo-drop-end.is-drop{background:var(--primary-light);box-shadow:inset 3px 0 0 var(--accent)}.wo-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.4rem}.wo-slot{display:flex;align-items:center;gap:.5rem;min-height:52px;padding:.3rem .4rem;border-radius:var(--radius);border:2px dashed var(--border);background:var(--surface)}.wo-slot.is-filled{border-style:solid;border-color:var(--primary);background:var(--primary-light)}.wo-slot.is-drop{box-shadow:inset 0 3px 0 var(--accent)}.wo-slot-num{flex-shrink:0;width:1.8rem;height:1.8rem;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--glass-bg);border:1px solid var(--border);font-weight:700;font-size:.85rem;color:var(--text-secondary)}.wo-slot.is-filled .wo-slot-num{background:var(--primary);border-color:var(--primary);color:#fff}.wo-slot-empty{color:var(--text-secondary);font-size:.85rem}.wo-slot-moves{display:inline-flex;flex-direction:column;gap:.15rem;flex-shrink:0}.wo-move{width:2rem;height:1.4rem;padding:0;line-height:1;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--glass-bg);color:var(--text);cursor:pointer;font-family:inherit}.wo-move:disabled{opacity:.35;cursor:default}.wo-list-bank{display:flex;flex-direction:column;gap:.4rem;min-height:44px}.wo-card{display:flex;align-items:center;gap:.6rem;width:100%;min-height:44px;padding:.5rem .75rem;text-align:left;background:var(--glass-bg);color:var(--text);border:2px solid var(--border);border-radius:var(--radius);font-size:.95rem;font-weight:500;font-family:inherit;cursor:grab;transition:all var(--transition);overflow-wrap:break-word;word-break:break-word}.wo-card:disabled{cursor:default;opacity:.85}.wo-card-placed{flex:1;min-width:0;border:none;background:transparent;color:var(--primary);font-weight:600;padding:.3rem .4rem}@media(hover:hover){.wo-list-bank .wo-card:not(:disabled):hover{border-color:var(--primary);box-shadow:0 0 16px var(--primary-glow)}}.wo-item-img{width:56px;height:56px;object-fit:cover;border-radius:var(--radius-sm);flex-shrink:0}.word-diff.is-list{display:block;margin:0;padding-left:2.2rem;line-height:1.5}.word-diff.is-list li{padding:.15rem 0}.word-diff.is-list li::marker{font-weight:700;color:var(--text-secondary)}.wo-report-list{margin:.2rem 0 0;padding-left:1.6rem;color:var(--text);line-height:1.5}.wo-report-list li{padding:.1rem 0}.wo-report-list.is-answer{margin:0;padding:.4rem .5rem .4rem 2rem;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border)}.wo-report-img{width:32px;height:32px;object-fit:cover;border-radius:var(--radius-sm);vertical-align:middle;margin-right:.4rem}.wo-list-edit{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.4rem}.wo-list-edit-row{display:flex;align-items:flex-start;gap:.4rem}.wo-list-edit-row .wo-slot-num{margin-top:.3rem}.wo-list-edit-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:.3rem}.wo-list-edit-body input[type=text]{width:100%;padding:.45rem .5rem;font-family:inherit;font-size:.9rem;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--glass-bg);color:var(--text)}.wo-list-edit-body .btn{align-self:flex-start}.wo-list-edit-moves{display:flex;gap:.1rem;margin-top:.35rem}.wo-list-edit-moves .wo-edit-chip-btn:disabled{opacity:.3;cursor:default}.wo-edit-tokens{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center}.wo-edit-chip{display:inline-flex;align-items:center;gap:.15rem;padding:.2rem .35rem;border-radius:var(--radius-sm);background:var(--glass-bg);border:1px solid var(--border)}.wo-edit-chip input{border:none;background:transparent;color:var(--text);font-family:inherit;font-size:.9rem;padding:.15rem .2rem;min-width:2.5rem}.wo-edit-chip input:focus{outline:1px solid var(--primary);border-radius:var(--radius-sm)}.wo-edit-chip-btn{border:none;background:transparent;cursor:pointer;padding:0 .2rem;color:var(--text-secondary);font-size:.9rem;line-height:1}.wo-edit-chip-btn:hover{color:var(--error)}.wo-edit-join:hover{color:var(--primary)}.cat-basket{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;min-height:52px;padding:.5rem .6rem;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);border-bottom:2px solid var(--primary)}.cat-basket.is-drop{border-color:var(--accent)}.cat-empty{color:var(--text-secondary);font-size:.85rem}.cat-buckets{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:.6rem}.cat-bucket{display:flex;flex-direction:column;gap:.35rem;padding:.5rem;border-radius:var(--radius);background:var(--glass-bg);border:2px dashed var(--border);transition:border-color var(--transition),background var(--transition)}.cat-bucket.is-target{border-color:var(--primary)}.cat-bucket.is-drop{border-color:var(--accent);background:var(--primary-light)}.cat-bucket-head{display:flex;align-items:center;gap:.35rem;flex-wrap:wrap;padding:.2rem;border:none;background:transparent;color:var(--text);font:inherit;font-weight:700;text-align:left;cursor:pointer;width:100%}.cat-bucket-head:disabled{cursor:default}.cat-bucket-label{overflow-wrap:break-word;word-break:break-word}.cat-bucket-img{max-width:100%;max-height:72px;border-radius:var(--radius-sm);display:block}.cat-bucket-desc{font-size:.78rem;color:var(--text-secondary);white-space:pre-wrap}.cat-bucket-body{display:flex;flex-wrap:wrap;gap:.35rem;min-height:40px}.cat-chip{display:inline-flex;align-items:center;gap:.15rem;border:2px solid var(--border);border-radius:var(--radius);background:var(--glass-bg);cursor:grab;transition:all var(--transition);max-width:100%}.cat-chip-body{padding:.4rem .7rem;min-height:38px;border:none;background:transparent;color:inherit;font-size:.95rem;font-weight:500;font-family:inherit;cursor:inherit;overflow-wrap:break-word;word-break:break-word}.cat-chip-body:disabled{cursor:default}.cat-chip.is-picked{border-color:var(--accent);box-shadow:0 0 16px var(--primary-glow)}.cat-chip.is-placed{border-color:var(--primary);background:var(--primary-light);color:var(--primary);font-weight:600}.cat-chip-hidden{font-size:1.05rem}@media(hover:hover){.cat-chip:hover{border-color:var(--primary);transform:translateY(-1px)}}.cat-placements{display:flex;flex-direction:column;gap:.2rem;font-size:.78rem}.cat-placement{display:flex;align-items:center;gap:.3rem;flex-wrap:wrap}.cat-placement-item{font-weight:600}.cat-placement.is-ok .cat-placement-chosen{color:var(--success);font-weight:600}.cat-placement.is-wrong .cat-placement-chosen,.cat-placement.is-missing .cat-placement-chosen{color:var(--error);font-weight:600}.cat-placement-expected{color:var(--text-secondary)}.num-list{display:flex;flex-direction:column;gap:.75rem}.num-q{display:flex;flex-direction:column;gap:.3rem}.num-q-prompt{display:flex;gap:.4rem;align-items:baseline;font-size:1rem;overflow-wrap:anywhere}.num-q-n{font-weight:700;color:var(--text-secondary)}.num-q-form{font-size:.8rem;color:var(--text-secondary);font-style:italic}.num-q-entry{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem}.num-input{width:9rem;max-width:100%;min-height:44px;padding:.4rem .6rem;font-size:1.1rem;font-variant-numeric:tabular-nums;border:2px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text)}.num-input:focus{outline:none;border-color:var(--primary)}.num-q.is-ok .num-input{border-color:var(--success);background:var(--success-light)}.num-q.is-wrong .num-input,.num-q.is-missing .num-input{border-color:var(--error);background:var(--error-light)}.num-unit{font-weight:600}.num-verdict{font-weight:700}.num-q.is-ok .num-verdict{color:var(--success)}.num-q.is-wrong .num-verdict,.num-q.is-missing .num-verdict{color:var(--error)}.num-keys{display:inline-flex;gap:.3rem}.num-key{min-width:44px;min-height:44px;padding:0 .6rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--glass-bg);color:var(--text);font:inherit;font-size:1.1rem;font-weight:700;cursor:pointer}@media(hover:hover){.num-key:hover{border-color:var(--primary)}}.num-note{font-size:.82rem;color:var(--text-secondary);display:flex;flex-direction:column;gap:.1rem}.num-expected strong{color:var(--text)}.num-report{display:flex;flex-direction:column;gap:.35rem;font-size:.8rem}.num-report-line{display:flex;align-items:baseline;gap:.3rem;flex-wrap:wrap}.num-report-typed{font-weight:600}.num-report-row.is-ok .num-report-typed{color:var(--success)}.num-report-row.is-wrong .num-report-typed,.num-report-row.is-missing .num-report-typed{color:var(--error)}.num-edit-q{display:flex;flex-direction:column;gap:.5rem;padding:.6rem .7rem;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border)}.num-edit-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.5rem}.hs-play,.hs-answer{display:flex;flex-direction:column;gap:.6rem}.hs-figure{max-width:100%}.hs-figure-note{font-size:.85rem;color:var(--text-secondary)}.hs-stage{position:relative;display:inline-block;max-width:100%;line-height:0;user-select:none;-webkit-user-select:none}.hs-stage.is-tappable{cursor:crosshair}.hs-stage img{display:block;max-width:100%;height:auto;border-radius:var(--radius);-webkit-user-drag:none}.hs-overlay{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;line-height:normal}.hs-rect{position:absolute;box-sizing:border-box;border:2px dashed var(--success);background:color-mix(in srgb,var(--success) 12%,transparent);border-radius:4px}.hs-rect.is-plain{border-color:var(--primary);background:color-mix(in srgb,var(--primary) 12%,transparent)}.hs-rect-n{position:absolute;left:0;top:0;transform:translateY(-100%);max-width:14rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:0 .3rem;font-size:.7rem;font-weight:700;border-radius:4px 4px 0 0;background:var(--success);color:#fff}.hs-rect.is-plain .hs-rect-n{background:var(--primary)}.hs-pin{position:absolute;transform:translate(-50%,-50%);display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;font-size:.8rem;font-weight:800;color:#fff;background:var(--primary);border:2px solid #fff;box-shadow:0 1px 4px #00000073}.hs-pin.is-key{background:var(--accent)}.hs-pin.is-ok{background:var(--success)}.hs-pin.is-wrong,.hs-pin.is-missing{background:var(--error)}.hs-marker{position:absolute;transform:translate(-50%,-50%);pointer-events:auto;width:40px;height:40px;padding:0;border-radius:50%;font:inherit;font-size:.95rem;font-weight:800;cursor:pointer;color:var(--primary);background:var(--surface);border:3px solid var(--primary);box-shadow:0 1px 6px #00000073}.hs-marker.is-filled{background:var(--primary);color:#fff}.hs-marker.is-target{border-color:var(--accent)}.hs-marker.is-drop{box-shadow:0 0 0 4px var(--accent)}.hs-marker:disabled{cursor:default}.hs-hint{font-size:.85rem;color:var(--text-secondary)}.hs-questions{display:flex;flex-direction:column;gap:.35rem}.hs-q{display:flex;align-items:stretch;gap:.25rem;border:2px solid var(--border);border-radius:var(--radius);background:var(--glass-bg)}.hs-q.is-active{border-color:var(--accent);box-shadow:0 0 12px var(--primary-glow)}.hs-q-body{flex:1;min-width:0;min-height:44px;display:flex;align-items:center;gap:.5rem;padding:.35rem .6rem;border:none;background:transparent;color:var(--text);font:inherit;text-align:left;cursor:pointer}.hs-q-body:disabled{cursor:default}.hs-q-n{flex-shrink:0;width:26px;height:26px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:800;color:#fff;background:var(--primary)}.hs-q-prompt{flex:1;min-width:0;white-space:pre-wrap;overflow-wrap:anywhere}.hs-q-state{flex-shrink:0;font-size:.75rem;color:var(--text-secondary)}.hs-q.is-placed .hs-q-state{color:var(--success);font-weight:600}.hs-q-clear{width:44px;border:none;background:transparent;color:var(--error);font-size:1.1rem;cursor:pointer}.hs-bank{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;min-height:52px;padding:.5rem .6rem;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);border-bottom:2px solid var(--primary)}.hs-chip{min-height:40px;padding:.35rem .7rem;max-width:100%;border:2px solid var(--border);border-radius:var(--radius);background:var(--glass-bg);color:var(--text);font:inherit;font-weight:500;cursor:grab;overflow-wrap:anywhere}.hs-chip:disabled{cursor:default}.hs-chip.is-picked{border-color:var(--accent);box-shadow:0 0 16px var(--primary-glow)}.hs-chip.is-placed{border-color:var(--primary);background:var(--primary-light);color:var(--primary);font-weight:600;cursor:pointer}.hs-legend{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.35rem}.hs-legend-row{display:flex;align-items:center;gap:.5rem;border-radius:var(--radius)}.hs-legend-row.is-drop{box-shadow:0 0 0 2px var(--accent)}.hs-legend-n{flex-shrink:0;width:28px;height:28px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:800;color:var(--primary);border:2px solid var(--primary)}.hs-slot{flex:1;min-height:40px;padding:.3rem .6rem;text-align:left;border:2px dashed var(--border);border-radius:var(--radius);background:transparent;color:var(--text-secondary);font:inherit;font-size:.85rem}.hs-slot.is-target{border-color:var(--primary);color:var(--primary);cursor:pointer}.hs-spots{display:flex;flex-direction:column;gap:.25rem;font-size:.82rem}.hs-spot{display:flex;align-items:baseline;gap:.3rem;flex-wrap:wrap}.hs-spot-n{font-weight:700}.hs-spot-prompt{white-space:pre-wrap}.hs-spot-chosen{font-weight:600}.plot-play,.plot-answer{display:flex;flex-direction:column;gap:.6rem}.plot-figure{width:100%;max-width:32rem}.plot-figure svg{display:block;width:100%;height:auto;touch-action:manipulation;user-select:none;-webkit-user-select:none}.plot-figure.is-tappable svg{cursor:crosshair}.plot-figure svg{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border)}.plot-grid line{stroke:#bccbe3;stroke-width:1}.plot-axes line{stroke:var(--text);stroke-width:1.6}.plot-arrow-head{fill:var(--text)}.plot-numbers text{fill:var(--text-secondary);font-family:inherit}.plot-numbers .plot-axis-name{fill:var(--text);font-style:italic;font-weight:700}.plot-pin circle{fill:var(--primary);stroke:#fff;stroke-width:2}.plot-pin text,.plot-line text{font-weight:800;paint-order:stroke;stroke:var(--surface);stroke-width:3px;fill:var(--primary)}.plot-line line{stroke:var(--primary);stroke-width:2.5;stroke-linecap:round}.plot-pin.is-active circle{fill:var(--accent)}.plot-pin.is-active text,.plot-line.is-active text{fill:var(--accent)}.plot-line.is-active line{stroke:var(--accent)}.plot-pin.is-ok circle{fill:var(--success)}.plot-pin.is-ok text,.plot-line.is-ok text{fill:var(--success)}.plot-line.is-ok line{stroke:var(--success)}.plot-pin.is-wrong circle{fill:var(--error)}.plot-pin.is-wrong text,.plot-line.is-wrong text{fill:var(--error)}.plot-line.is-wrong line{stroke:var(--error)}.plot-pin.is-key circle{fill:transparent;stroke:var(--success);stroke-width:2.5}.plot-pin.is-key text{fill:var(--success)}.plot-line.is-key line{stroke:var(--success)}.plot-line.is-dashed line{stroke-dasharray:6 5}.plot-ghost{fill:none;stroke:var(--accent);stroke-width:1.5;stroke-dasharray:3 3;pointer-events:none}.plot-q-at{font-variant-numeric:tabular-nums}.plot-edit-axes{display:flex;flex-wrap:wrap;gap:.5rem 1.25rem;align-items:center;font-size:.9rem}.plot-edit-q{cursor:default}.plot-edit-q.is-selected{border-color:var(--accent)}.plot-edit-key{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem .6rem;font-size:.85rem}.plot-edit-key-label{font-weight:600}.plot-edit-key-text{color:var(--text-secondary)}.plot-edit-coord{display:inline-flex;align-items:center;gap:.25rem;font-style:italic}.plot-edit-step{display:inline-flex;align-items:center;gap:.4rem}.plot-edit-kinds{flex-wrap:wrap}.plot-edit-sticky{position:sticky;top:-1rem;z-index:2;margin:-.5rem -1rem 0;padding:.5rem 1rem;background:var(--bg);box-shadow:0 8px 8px -8px #00000040}.plot-edit-sticky .plot-figure{max-width:min(32rem,calc(40vh * var(--plot-aspect, 1)));margin-inline:auto}.hs-spot.is-ok .hs-spot-chosen{color:var(--success)}.hs-spot.is-wrong .hs-spot-chosen,.hs-spot.is-missing .hs-spot-chosen{color:var(--error)}.hs-spot-expected{color:var(--text-secondary)}.hs-report .hs-stage img{max-height:360px;width:auto}.hs-edit-figure .hs-stage{touch-action:none;cursor:crosshair}.hs-edit-region{position:absolute;box-sizing:border-box;pointer-events:auto;cursor:move;border:2px solid var(--primary);background:color-mix(in srgb,var(--primary) 18%,transparent);border-radius:4px}.hs-edit-region .hs-rect-n{background:var(--primary)}.hs-edit-region.is-selected{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 22%,transparent)}.hs-edit-region.is-selected .hs-rect-n{background:var(--accent)}.hs-edit-handle{position:absolute;right:-11px;bottom:-11px;width:22px;height:22px;border-radius:50%;background:var(--accent);border:2px solid #fff;cursor:nwse-resize;box-shadow:0 1px 4px #0006}.hs-edit-list{display:flex;flex-direction:column;gap:.4rem}.hs-edit-row{display:flex;align-items:center;gap:.4rem;padding:.15rem;border-radius:var(--radius)}.hs-edit-row.is-selected{box-shadow:0 0 0 2px var(--accent)}.cat-edit-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:.6rem}.cat-edit-col{display:flex;flex-direction:column;gap:.4rem;padding:.5rem;border-radius:var(--radius);background:var(--glass-bg);border:1px solid var(--border)}.cat-edit-col-head{display:flex;align-items:center;gap:.25rem}.cat-edit-extras{display:flex;flex-direction:column;gap:.35rem;align-items:flex-start}.cat-edit-items{display:flex;flex-direction:column;gap:.3rem}.cat-edit-item{display:flex;align-items:center;gap:.25rem}.cat-edit-item-mode{font-size:.7rem;padding:.15rem;max-width:6.5rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text-secondary)}.cat-edit-icon{width:26px;height:26px;padding:0;flex-shrink:0;border:none;background:transparent;color:var(--text-secondary);font-size:.95rem;line-height:1;cursor:pointer;border-radius:var(--radius-sm)}.cat-edit-icon:disabled{cursor:default;opacity:.5}.cat-edit-icon[aria-pressed=true]{color:var(--primary);background:var(--primary-light)}.quiz-options{display:flex;flex-direction:column;gap:.4rem}.quiz-options .option-button{justify-content:flex-start;text-align:left}.option-button.selected{border-color:var(--primary);background:var(--primary-light);color:var(--primary);font-weight:600}.option-button.correct{background:var(--success);color:#fff;border-color:var(--success);box-shadow:0 4px 16px #16a34a4d}.option-button.incorrect{background:var(--error);color:#fff;border-color:var(--error);box-shadow:0 4px 16px #dc26264d}.option-button.disabled-wrong{opacity:.3;text-decoration:line-through;cursor:not-allowed;border-color:var(--error);color:var(--error)}.write-input{width:100%;padding:.65rem .9rem;border:2px solid var(--border);border-radius:var(--radius);font-size:1rem;text-align:center;margin:.75rem 0 0;background:var(--input-bg);color:var(--text);font-family:var(--font);transition:border-color var(--transition),box-shadow var(--transition);min-height:44px;box-sizing:border-box}.write-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light),0 0 20px var(--primary-glow)}.gap-blank{display:inline;white-space:nowrap}.gap-blank-input{display:inline-block;vertical-align:baseline;width:auto;min-width:10ch;max-width:100%;margin:0 .15rem;padding:.08em .5em .14em;border:none;border-bottom:3px solid var(--primary);border-radius:var(--radius-sm) var(--radius-sm) 0 0;background:linear-gradient(to bottom,transparent 40%,var(--primary-light) 100%);backdrop-filter:none;-webkit-backdrop-filter:none;color:var(--text);font-family:var(--font);font-size:max(1em,16px);font-weight:600;line-height:1.35;letter-spacing:normal;text-align:center;caret-color:var(--accent);transition:width var(--transition),border-color var(--transition),background var(--transition),box-shadow var(--transition),color var(--transition)}.gap-blank-input::placeholder{color:var(--text-tertiary);font-weight:400;letter-spacing:.12em}.gap-blank-input:hover:not(:disabled){background:linear-gradient(to bottom,transparent 28%,var(--primary-light) 100%)}.gap-blank-input:focus{outline:none;border-bottom-color:var(--accent);background:linear-gradient(to bottom,transparent 22%,var(--accent-light) 100%);box-shadow:0 6px 18px -10px var(--accent)}.gap-blank-input:disabled{cursor:default;opacity:1;-webkit-text-fill-color:currentColor}.gap-blank.is-correct .gap-blank-input{border-bottom:3px double var(--success);background:linear-gradient(to bottom,transparent 35%,var(--success-light) 100%);color:var(--success)}.gap-blank.is-incorrect .gap-blank-input{border-bottom:3px dashed var(--error);background:linear-gradient(to bottom,transparent 35%,var(--error-light) 100%);color:var(--error)}.gap-blank.is-revealed{display:inline-block;vertical-align:baseline;white-space:normal;max-width:100%;margin:0 .15rem;padding:.08em .5em .14em;border-bottom:3px dashed var(--error);border-radius:var(--radius-sm) var(--radius-sm) 0 0;background:linear-gradient(to bottom,transparent 35%,var(--error-light) 100%)}.gap-blank-wrong{margin-right:.4em;color:var(--text-secondary);text-decoration-thickness:2px}.gap-blank-correct{font-weight:700;color:var(--success)}.gap-blank-mark{display:inline-block;margin-left:.15rem;font-size:.8em;font-weight:700;line-height:1;animation:gap-blank-mark-in var(--transition-spring) both}.gap-blank.is-correct .gap-blank-mark{color:var(--success)}.gap-blank.is-incorrect .gap-blank-mark{color:var(--error)}@keyframes gap-blank-mark-in{0%{opacity:0;transform:translateY(.2em) scale(.6)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){.gap-blank-input{transition:none}.gap-blank-mark{animation:none}}.rt-field{display:flex;flex-direction:column;gap:.4rem;min-width:0}.rt-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:.15rem;padding:.25rem .3rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface)}.rt-btn{min-width:1.95rem;height:1.95rem;padding:0 .4rem;display:inline-flex;align-items:center;justify-content:center;border:none;background:transparent;color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;font-family:var(--font);font-size:.85rem;line-height:1;transition:background var(--transition),color var(--transition)}.rt-btn:hover{background:var(--surface-hover);color:var(--text)}.rt-btn:focus-visible{outline:2px solid var(--primary);outline-offset:1px}.rt-btn.is-active{background:var(--primary-light);color:var(--primary)}.rt-sep{width:1px;height:1.1rem;background:var(--border);margin:0 .25rem}.rt-popover-host{position:relative;display:inline-flex}.rt-swatches,.rt-linkbox{position:absolute;top:100%;left:0;z-index:5;display:flex;align-items:center;gap:.3rem;margin-top:.25rem;padding:.35rem;background:var(--surface-solid);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-md)}.rt-swatch{width:1.15rem;height:1.15rem;padding:0;border:1px solid var(--border);border-radius:50%;cursor:pointer;transition:transform var(--transition)}.rt-swatch:hover{transform:scale(1.15)}.rt-swatch.is-active{box-shadow:0 0 0 2px var(--surface-solid),0 0 0 3.5px var(--primary)}.rt-swatch-none{display:inline-flex;align-items:center;justify-content:center;background:var(--surface);color:var(--text-secondary);font-size:.7rem;line-height:1}.rt-linkbox input{width:14rem;padding:.35rem .5rem;font-size:.85rem}.rt-editor-wrap{position:relative;display:grid;min-width:0}.rt-editor{grid-area:1 / 1;min-width:0;width:100%;min-height:7em;padding:.85rem 1rem;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--input-bg);color:var(--text);font-family:var(--font);font-size:1rem;line-height:1.55;overflow-wrap:anywhere;cursor:text;transition:border-color var(--transition),box-shadow var(--transition)}.rt-editor-inline{min-height:2.75em;padding:.6rem .75rem}.rt-editor:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light),0 0 16px var(--primary-glow)}.rt-editor-placeholder{grid-area:1 / 1;min-width:0;z-index:1;padding:.85rem 1rem;border:1.5px solid transparent;font-family:var(--font);font-size:1rem;line-height:1.55;overflow-wrap:anywhere;color:var(--text-tertiary);pointer-events:none}.rt-editor-inline+.rt-editor-placeholder{padding:.6rem .75rem}.rt-editor>*:first-child{margin-top:0}.rt-editor>*:last-child{margin-bottom:0}.rt-editor p{margin:0 0 .75rem}.rt-editor h1{font-size:1.4rem;margin:0 0 .6rem}.rt-editor h2{font-size:1.2rem;margin:0 0 .5rem}.rt-editor h3{font-size:1.05rem;margin:0 0 .4rem}.rt-editor ul,.rt-editor ol{margin:0 0 .75rem;padding-left:1.5rem}.rt-editor li{margin-bottom:.25rem}.rt-editor a{color:var(--primary)}.rt-editor mark{background:var(--mark-bg);color:inherit;padding:.05em .2em;border-radius:4px}.rt-editor code{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-sm);padding:.05em .35em;font-size:.92em}.rt-blank{color:var(--text-secondary);letter-spacing:.06em}.rt-editor .rt-blank{padding:.05em .35em;border-radius:var(--radius-sm);background:var(--primary-light);color:var(--primary);font-weight:700;letter-spacing:.1em}.rt-editor-blanks .rt-blank{cursor:pointer;transition:background var(--transition),color var(--transition)}.rt-editor-blanks .rt-blank:hover{background:var(--error);color:var(--primary-text)}.rt-math-display{display:block;margin:.5rem 0;text-align:center;overflow-x:auto;overflow-y:hidden}.rt-math-display .katex-display{margin:0}.rt-math-failed{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;color:var(--text-secondary)}.rt-editor .rt-math{display:inline-block;vertical-align:middle;margin:0 .1em;max-width:100%;overflow-x:auto;padding:.05em .3em;border-radius:var(--radius-sm);background:var(--primary-light);cursor:pointer}.rt-editor .rt-math:hover{outline:1.5px solid var(--primary)}.rt-editor .rt-math-display{display:inline-block;text-align:left}.rt-toolbar{position:relative}.rt-formula-host{position:static}.rt-formulabox{flex-direction:column;align-items:stretch;gap:.4rem;width:min(22rem,100%);padding:.5rem}.rt-formulabox-row{display:flex;gap:.3rem;align-items:center}.rt-formulabox-row input[type=text]{flex:1;min-width:0;width:auto;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.rt-formulabox-display{display:flex;gap:.35rem;align-items:center;font-size:.85rem;color:var(--text-secondary)}.rt-formulabox-preview{display:block;padding:.4rem .5rem;max-height:8rem;overflow:auto;border:1px dashed var(--border);border-radius:var(--radius-sm);background:var(--input-bg)}.rt-source{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9rem}.gapfill-editor-wrap{position:relative}.gapfill-editor{width:100%;min-height:7em;padding:.85rem 1rem;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:1rem;font-family:var(--font);background:var(--input-bg);color:var(--text);white-space:pre-wrap;overflow-wrap:break-word;line-height:1.9;cursor:text;transition:border-color var(--transition),box-shadow var(--transition)}.gapfill-editor:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light),0 0 16px var(--primary-glow)}.gapfill-editor-placeholder{position:absolute;top:.85rem;left:1rem;right:1rem;color:var(--text-tertiary);white-space:pre-wrap;line-height:1.9;pointer-events:none}.gapfill-pill{display:inline;padding:.1rem .45rem;margin:0 .1rem;border-radius:var(--radius-sm);background:var(--primary);color:var(--primary-text);font-weight:600;cursor:pointer;transition:background var(--transition)}.gapfill-pill:hover{background:var(--error);text-decoration:line-through}.gapfill-popup-btn{position:absolute;transform:translate(-50%,-100%) translateY(-6px);z-index:30;white-space:nowrap;box-shadow:var(--shadow-lg)}.gapfill-popup-btn:hover,.gapfill-popup-btn:active{transform:translate(-50%,-100%) translateY(-6px)}.gapfill-popup-btn.is-below,.gapfill-popup-btn.is-below:hover,.gapfill-popup-btn.is-below:active{transform:translate(-50%,28px)}.matching-container{display:grid;grid-template-columns:1fr 1fr;gap:.5rem 1.25rem;margin-bottom:1.25rem}.matching-container h3{margin-bottom:.1rem;color:var(--text);font-size:.95rem;font-weight:700}.matching-item{padding:.8rem 1rem;background:var(--glass-bg);border:2px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);color:var(--text);font-weight:500;min-height:52px;display:flex;align-items:center;overflow-wrap:break-word;word-break:break-word;font-size:.95rem}.matching-item:hover{border-color:var(--primary);background:var(--primary-light);box-shadow:0 0 12px var(--primary-glow)}.matching-item.selected{background:var(--primary-light);color:var(--primary);border-color:var(--primary);box-shadow:0 2px 8px var(--primary-glow);font-weight:600}.matching-item.matched{background:var(--success);color:#fff;border-color:transparent;cursor:default;opacity:.85;box-shadow:0 4px 12px #16a34a40}.matching-item.wrong{background:var(--error);color:#fff;border-color:transparent;animation:shake .4s ease}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-5px)}40%{transform:translate(5px)}60%{transform:translate(-5px)}80%{transform:translate(5px)}}.results-summary{text-align:center;padding:1.5rem}.score-display{font-size:2.75rem;font-weight:800;margin:1.25rem 0;color:var(--accent)}.results-list{margin:1.5rem 0;text-align:left;display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem}.result-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;background:var(--glass-bg);border-radius:var(--radius-sm);font-size:.9rem;border:1px solid var(--border-light)}.result-marker{width:12px;height:12px;border-radius:50%;flex-shrink:0}.result-marker.good{background:var(--success);box-shadow:0 0 8px #16a34a66}.result-marker.ok{background:var(--warning);box-shadow:0 0 8px #d9770666}.result-marker.bad{background:var(--error);box-shadow:0 0 8px #dc262666}.words-filter{display:flex;gap:.5rem;flex-wrap:wrap}.filter-btn{padding:.4rem .9rem;border:1px solid var(--border);border-radius:var(--radius-full);background:var(--glass-bg);color:var(--text-secondary);font-size:.8rem;font-weight:500;cursor:pointer;transition:all var(--transition)}.filter-btn:hover{border-color:var(--primary);color:var(--primary);box-shadow:0 0 10px var(--primary-glow)}.filter-btn.active{background:var(--primary);color:#fff;border-color:transparent;box-shadow:0 4px 12px var(--primary-glow)}.market-filter-row{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap}.market-filter-label{font-size:.8rem;color:var(--text-secondary);min-width:5.5rem}@media(max-width:480px){.market-filter-label{flex-basis:100%;min-width:0}}.catalogue-suggestions{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:.4rem}.catalogue-suggestions .filter-btn{padding:.25rem .65rem;font-size:.75rem}.settings-section{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:1.25rem;margin-bottom:1rem}.settings-section h3{margin-bottom:1rem;color:var(--text);padding-bottom:.4rem;border-bottom:1px solid var(--border);font-size:.95rem;font-weight:700;letter-spacing:-.01em}.settings-track-name{margin:-.5rem 0 .25rem;font-size:.82rem;font-weight:600;color:var(--text-secondary)}.settings-info div{padding:.5rem 0;font-size:.9rem;color:var(--text-secondary)}.settings-info strong{color:var(--text)}.setting-row{display:flex;justify-content:space-between;align-items:center;padding:.85rem 0;border-bottom:1px solid var(--border-light);gap:1rem}.setting-row:last-child{border-bottom:none}.setting-row label{font-size:.9rem;font-weight:500;color:var(--text);display:flex;align-items:center;gap:.5rem}.setting-row select,.setting-row input[type=number]{width:auto;max-width:180px}input[type=checkbox]{width:20px;height:20px;accent-color:var(--primary);cursor:pointer;flex-shrink:0;border-radius:4px}.checkbox-row{display:flex;align-items:center;gap:.75rem;padding:.65rem .85rem;border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition);-webkit-user-select:none;user-select:none}.checkbox-row:hover{background:var(--primary-light)}.checkbox-row label{display:flex;align-items:center;gap:.75rem;cursor:pointer;font-size:.9rem;font-weight:500;flex:1}.assignment-actions{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--border-light)}.assignment-status-bar{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap}.theme-toggle{display:flex;gap:.25rem;padding:.2rem;background:var(--border-light);border-radius:var(--radius-full)}.theme-toggle-btn{padding:.4rem .85rem;border:none;border-radius:var(--radius-full);font-size:.8rem;font-weight:500;cursor:pointer;background:transparent;color:var(--text-secondary);transition:all var(--transition)}.theme-toggle-btn.active{background:var(--surface-solid);color:var(--text);box-shadow:var(--shadow-sm)}.theme-toggle-btn:hover:not(.active){color:var(--text)}.levels-container{display:grid;gap:1rem}.level-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-left:4px solid var(--accent);border-radius:var(--radius);padding:1rem;cursor:pointer;transition:all var(--transition)}.level-card:hover{box-shadow:var(--shadow),0 0 16px var(--primary-glow);border-color:var(--primary)}.level-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.level-header h3{text-transform:capitalize;font-size:.95rem;color:var(--text);font-weight:700}.dictionaries-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.85rem}.dictionary-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius);padding:1rem;cursor:pointer;transition:all var(--transition)}.dictionary-card:hover{box-shadow:var(--shadow),0 0 16px var(--primary-glow);border-color:var(--primary);transform:translateY(-2px)}.dictionary-card h3{font-size:.95rem;margin-bottom:.3rem;font-weight:700}.dictionary-card p{font-size:.85rem;color:var(--text-secondary);margin-bottom:.5rem}.dictionary-meta{display:flex;gap:.75rem;font-size:.8rem;color:var(--text-secondary);align-items:center}.badge-default{background:var(--primary-light);color:var(--primary);padding:.1rem .55rem;border-radius:var(--radius-full);font-size:.7rem;font-weight:700}.expr-card{text-align:center}.expr-card h3{margin-bottom:.25rem}.expr-card .dictionary-meta{justify-content:center}.assignments-header{display:flex;justify-content:space-between;align-items:center;gap:.75rem;margin-bottom:1rem;flex-wrap:wrap}.assignments-header h2{margin:0}.assignments-sort{display:inline-flex;align-items:stretch;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:999px;padding:.2rem}.assignments-sort-option{padding:.3rem .75rem;border-radius:999px;font-size:.78rem;font-weight:600;color:var(--text-secondary);cursor:pointer;border:0;background:transparent;transition:background var(--transition),color var(--transition)}.assignments-sort-option:hover{color:var(--primary)}.assignments-sort-option[aria-pressed=true]{background:var(--primary-light);color:var(--primary);font-weight:700}.assignments-sort-option:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.assignments-tabs,.page-tabs{display:flex;gap:.5rem;margin-bottom:1.25rem;flex-wrap:wrap}.assignments-tab,.page-tab{display:inline-flex;align-items:center;gap:.45rem;padding:.5rem .95rem;border-radius:999px;background:var(--glass-bg);border:1px solid var(--glass-border);color:var(--text);font-size:.88rem;font-weight:600;cursor:pointer;transition:all var(--transition)}.assignments-tab:hover,.page-tab:hover{border-color:var(--primary);color:var(--primary)}.assignments-tab[aria-selected=true],.page-tab[aria-selected=true]{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}.assignments-tab:focus-visible,.page-tab:focus-visible{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.assignments-tab-count,.page-tab-count{font-size:.72rem;font-weight:700;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:999px;padding:.05rem .45rem;color:var(--text-secondary)}.assignments-tab[aria-selected=true] .assignments-tab-count,.page-tab[aria-selected=true] .page-tab-count{background:#ffffff80;color:var(--primary);border-color:transparent}.assignments-empty-tab{text-align:center;padding:2rem 1rem;background:var(--glass-bg);border:1px dashed var(--glass-border);border-radius:var(--radius);color:var(--text-secondary);margin-bottom:1.5rem}.assignments-empty-tab p{margin:0 0 .75rem;color:var(--text-secondary);font-size:.9rem}.assignment-group{margin-bottom:2rem}.group-header{font-size:1.1rem;font-weight:700;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:2px solid var(--primary-light);color:var(--text);letter-spacing:-.01em}.group-header-collapsible{cursor:pointer;display:flex;align-items:center;gap:.5rem;-webkit-user-select:none;user-select:none;transition:color var(--transition)}.group-header-collapsible:hover{color:var(--primary)}.group-header-chevron{display:inline-block;font-size:.7rem;transition:transform .2s ease;color:var(--text-secondary);flex-shrink:0}.group-header-chevron-expanded{transform:rotate(90deg)}.group-header-count{font-size:.7rem;font-weight:600;color:var(--text-secondary);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:999px;padding:.1rem .5rem;margin-left:auto}.assignments-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:.75rem}.assignment-card{background:var(--glass-bg);padding:1rem 1.1rem;border-radius:var(--radius);box-shadow:var(--shadow-xs);border:1px solid var(--glass-border);transition:all var(--transition);cursor:pointer;display:flex;flex-direction:column;gap:0}.assignment-card:hover{box-shadow:var(--shadow-md),0 0 20px var(--primary-glow);border-color:var(--primary);transform:translateY(-1px)}.assignment-card h4{font-size:.95rem;font-weight:700;margin:.55rem 0 0;color:var(--text);letter-spacing:-.01em;line-height:1.3}.assignment-card-badges{display:flex;gap:.35rem;flex-wrap:wrap}.assignment-card-badges .badge-type{padding:.2rem .6rem;border-radius:var(--radius-sm);font-size:.68rem;font-weight:700;letter-spacing:.02em;text-transform:uppercase;border:1px solid transparent}.assignment-card-badges .badge-type-standard{background:#2e4a8e1a;color:var(--badge-standard);border-color:#2e4a8e26}.assignment-card-badges .badge-type-flashcard{background:#0e8a7d1a;color:var(--badge-flashcard);border-color:#0e8a7d26}.assignment-card-badges .badge-type-gapfill{background:#1d83481a;color:var(--badge-gapfill);border-color:#1d834826}.assignment-card-badges .badge-type-matching{background:#7c3aed1a;color:var(--badge-matching);border-color:#7c3aed26}.assignment-card-badges .badge-type-both{background:#c0456a1a;color:var(--badge-both);border-color:#c0456a26}[data-theme=dark] .assignment-card-badges .badge-type-standard{background:#6b8fd426;border-color:#6b8fd440}[data-theme=dark] .assignment-card-badges .badge-type-flashcard{background:#34d1bf26;border-color:#34d1bf40}[data-theme=dark] .assignment-card-badges .badge-type-gapfill{background:#4ade8026;border-color:#4ade8040}[data-theme=dark] .assignment-card-badges .badge-type-matching{background:#a78bfa26;border-color:#a78bfa40}[data-theme=dark] .assignment-card-badges .badge-type-both{background:#f472b626;border-color:#f472b640}.assignment-card-body{flex:1;display:flex;flex-direction:column}.assignment-card-meta{display:flex;gap:.6rem;margin-top:.35rem;font-size:.78rem;color:var(--text-secondary)}.assignment-card-progress{margin-top:.55rem}.assignment-card-actions{margin-top:auto;padding-top:.75rem;display:flex;gap:.5rem;flex-wrap:wrap}.results-table{border-collapse:collapse;font-size:.85rem;background:var(--glass-bg);border-radius:var(--radius);overflow:hidden}.results-table th,.results-table td{padding:.55rem .75rem;text-align:left;border-bottom:1px solid var(--border-light)}.results-table th{font-weight:600;color:var(--text-secondary)}.results-table tbody tr:hover{background:var(--primary-light)}.empty-state{text-align:center;padding:2rem 1rem}.empty-state h3{font-size:1.05rem;color:var(--text);margin-bottom:.4rem;font-weight:700}.empty-state p{color:var(--text-secondary);font-size:.9rem}.word-table{width:100%;border-collapse:collapse;font-size:.9rem;background:var(--glass-bg);border-radius:var(--radius);overflow:hidden;border:1px solid var(--glass-border)}.word-table thead{background:var(--border-light)}.word-table th{text-align:left;padding:.6rem .75rem;font-weight:700;font-size:.8rem;color:var(--text-secondary);border-bottom:1.5px solid var(--border);white-space:nowrap}.word-table td{padding:.55rem .75rem;border-bottom:1px solid var(--border-light);vertical-align:middle}.word-table tbody tr:last-child td{border-bottom:none}.word-table tbody tr:hover{background:var(--primary-light)}.word-table tbody tr{transition:background .15s}@media(max-width:600px){.word-table{font-size:.8rem}.word-table th,.word-table td{padding:.4rem .5rem}}@keyframes float{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-20px) rotate(3deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse-halo{0%,to{opacity:0}50%{opacity:1}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes settings-highlight{0%{box-shadow:0 0 0 0 transparent;border-color:var(--glass-border)}25%{box-shadow:0 0 0 3px var(--primary-glow),0 0 28px var(--primary-glow);border-color:var(--primary)}to{box-shadow:0 0 0 0 transparent;border-color:var(--glass-border)}}.settings-section.settings-highlight{animation:settings-highlight 1.4s ease;border-color:var(--primary)}@keyframes onboard-fade-in{0%{opacity:0}to{opacity:1}}@keyframes onboard-slide-up{0%{opacity:0;transform:translateY(30px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}html.tour-open body{padding-bottom:75vh}.tour-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10000;pointer-events:none}.tour-layer>*{pointer-events:auto}.tour-backdrop,.tour-block{position:fixed}.tour-backdrop{top:0;right:0;bottom:0;left:0;background:#080c1c99;animation:onboard-fade-in .25s ease}.tour-spot{position:fixed;pointer-events:none!important;border-radius:12px;box-shadow:0 0 0 200vmax #080c1c99;outline:2px solid var(--accent);outline-offset:2px;animation:tour-ring 1.8s ease-out infinite}@keyframes tour-ring{0%{outline-color:var(--accent);outline-offset:2px}70%{outline-color:transparent;outline-offset:10px}to{outline-color:transparent;outline-offset:10px}}.tour-arrow{position:fixed;width:34px;height:34px;pointer-events:none!important}.tour-arrow svg{display:block;fill:var(--accent);filter:drop-shadow(0 2px 6px rgba(0,0,0,.35));animation:tour-nudge .9s ease-in-out infinite alternate}@keyframes tour-nudge{0%{transform:translateY(4px)}to{transform:translateY(-4px)}}.tour-card{position:fixed;width:min(360px,calc(100vw - 24px));background:var(--surface-solid);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:1.1rem 1.2rem 0;overflow:hidden;animation:onboard-fade-in .2s ease}.tour-count{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text-tertiary);margin-bottom:.35rem}.tour-title{font-size:1.1rem;font-weight:800;margin:0 0 .45rem;line-height:1.3}.tour-premium{display:inline-block;margin-bottom:.55rem;padding:.2rem .6rem;border-radius:999px;font-size:.76rem;font-weight:700;color:var(--accent);background:var(--accent-light);border:1px solid var(--accent)}.tour-premium.is-locked{color:var(--text-secondary);background:transparent;border-color:var(--border)}.tour-body{margin:0;font-size:.9rem;line-height:1.6;color:var(--text-secondary);white-space:pre-line;max-height:45vh;overflow-y:auto}.tour-hint{margin:.5rem 0 0;font-size:.78rem;color:var(--text-tertiary)}.tour-count-section{color:var(--accent)}.tour-jump{width:100%;margin-top:.75rem;justify-content:center;color:var(--accent);font-weight:700;white-space:normal;border:1px dashed var(--accent)}.tour-actions{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.9rem 0 1rem;flex-wrap:wrap}.tour-actions-main{display:flex;gap:.4rem;margin-left:auto}.tour-skip{color:var(--text-tertiary)}.tour-progress{height:3px;margin:0 -1.2rem;background:var(--border)}.tour-progress>div{height:100%;background:var(--accent);transition:width .3s ease}@media(prefers-reduced-motion:reduce){.tour-spot,.tour-arrow svg,.tour-card,.tour-backdrop{animation:none}}.container>*{animation:fadeIn .3s ease}@media(max-width:768px){.nav-toggle{display:block;margin-left:auto}.nav-menu{display:none;flex-direction:column;align-items:stretch;position:absolute;top:100%;left:0;right:0;margin-left:0;gap:.25rem;background:var(--surface-solid);border-bottom:1px solid var(--border);padding:.6rem .75rem .85rem;box-shadow:var(--shadow-md);z-index:99;max-height:calc(100vh - 64px);overflow-y:auto}.nav-menu.open{display:flex}.nav-links{flex-direction:column;align-items:stretch;gap:.15rem;width:100%}.nav-link{padding:.7rem .85rem}.nav-link-badge{top:50%;right:.85rem;transform:translateY(-50%)}.nav-menu .nav-right{flex-wrap:wrap;align-items:center;gap:.6rem .75rem;margin-left:0;margin-top:.5rem;padding-top:.7rem;border-top:1px solid var(--border)}.nav-menu .nav-right .nav-settings-btn{margin-left:auto}.nav-menu .nav-right .nav-logout{flex:1 0 100%;justify-content:center}.notif-panel{position:fixed;top:72px;top:calc(72px + env(safe-area-inset-top));left:.75rem;right:.75rem;width:auto;max-width:none}.container{padding:1rem}.action-cards{grid-template-columns:repeat(2,1fr)}.words-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.word-display{font-size:1.7rem}.step-content{padding:1.25rem;min-height:340px}.action-card p{min-height:2.8em}.word-buttons{flex-direction:column;align-items:center}.word-buttons .btn{width:100%}.options-grid{grid-template-columns:1fr}.matching-container{grid-template-columns:1fr 1fr;gap:.4rem .75rem}.matching-item{padding:.7rem .85rem;font-size:.9rem}.matching-container h3{font-size:.9rem}.lessons-grid{gap:.4rem}.assignments-grid{grid-template-columns:repeat(2,1fr);gap:.6rem}.assignment-card{padding:.85rem .95rem}.assignment-card h4{font-size:.88rem}.welcome-section{padding:1.5rem 1rem}.welcome-section h2{font-size:1.3rem}.auth-page{grid-template-columns:1fr}.auth-brand{display:none}.auth-form-side{padding:2rem}.auth-form-wrapper{max-width:none}.auth-container{margin:3vh 1rem;padding:2.25rem}input,select,textarea{font-size:16px}.dictionaries-grid{grid-template-columns:1fr 1fr}.setting-row{flex-direction:column;align-items:flex-start;gap:.5rem}.setting-row select,.setting-row input[type=number]{width:100%;max-width:none}.results-table{font-size:.75rem}.results-table th,.results-table td{padding:.4rem .5rem}}@media(max-width:640px){.assignments-header{gap:.5rem}.assignments-tabs,.page-tabs{gap:.4rem}.assignments-tab,.page-tab{padding:.45rem .8rem;font-size:.82rem}.assignments-sort-option{padding:.28rem .6rem;font-size:.75rem}}@media(max-width:480px){.container{padding:.75rem}h2{font-size:1.25rem}.nav-container{padding:0 .75rem;height:56px}.logo{font-size:1.1rem}.notif-panel{top:64px;top:calc(64px + env(safe-area-inset-top))}.welcome-section{padding:1.25rem .85rem;border-radius:var(--radius-lg)}.welcome-section h2{font-size:1.1rem}.welcome-section p{font-size:.8rem}.action-cards{grid-template-columns:1fr;gap:.6rem}.action-card{padding:1rem}.action-card-icon{width:40px;height:40px;font-size:1.15rem;margin-bottom:.4rem}.action-card h3{font-size:.9rem}.action-card p{font-size:.78rem;margin-bottom:.6rem;min-height:0}.lesson-card{padding:.65rem .75rem;flex-direction:column;align-items:flex-start;gap:.4rem}.lesson-card-info{width:100%}.lesson-card h4{font-size:.85rem}.lesson-meta{font-size:.68rem;gap:.4rem}.lesson-card-badges{flex-wrap:wrap}.assignments-grid{grid-template-columns:1fr;gap:.5rem}.assignment-card{padding:.75rem .85rem}.assignment-card h4{font-size:.85rem}.assignment-card-meta{font-size:.72rem;gap:.4rem}.assignment-card-badges .badge-type{font-size:.62rem;padding:.15rem .5rem}.step-content{padding:1rem;border-radius:var(--radius);min-height:300px}.step-content h2{font-size:1.15rem}.step-description{font-size:.82rem;margin-bottom:.85rem}.word-card{padding:1.15rem;margin-bottom:.85rem;min-height:200px}.word-display{font-size:1.4rem;margin-bottom:.4rem}.word-buttons{gap:.4rem}.word-buttons .btn{padding:.6rem;font-size:.8rem;min-height:40px}.option-button{padding:.75rem;font-size:.88rem;min-height:42px}.write-input{font-size:1rem;padding:.75rem;min-height:42px}.matching-container{gap:.3rem .4rem}.matching-item{padding:.6rem;font-size:.8rem;min-height:38px}.matching-container h3{font-size:.8rem;margin-bottom:0}.words-grid{grid-template-columns:1fr;gap:.4rem}.word-item{padding:.75rem}.word-item h3{font-size:.95rem}.filter-btn{padding:.35rem .65rem;font-size:.75rem}.btn-sm{padding:.3rem .65rem;font-size:.75rem;min-height:36px}.btn{min-height:44px}.dictionaries-grid{grid-template-columns:1fr}.dictionary-card,.level-card{padding:1rem}.level-header h3{font-size:.95rem}.settings-section{padding:1.15rem}.settings-section h3{font-size:.95rem;margin-bottom:.75rem}.auth-form-side{padding:1.5rem}.auth-form-title{font-size:1.5rem;margin-bottom:1.25rem}.auth-form-wrapper input,.auth-form-wrapper select{padding:.9rem 1rem;font-size:1rem;min-height:48px}.auth-submit-btn{padding:1rem;font-size:1rem;min-height:48px}.auth-container{margin:2vh .5rem;padding:1.5rem;border-radius:var(--radius-lg)}.auth-container h1{font-size:1.5rem}.score-display{font-size:2rem}.results-list{margin:1rem 0;grid-template-columns:1fr}.result-item{padding:.6rem .75rem;font-size:.8rem}.result-item>div{min-width:0}.result-item span{overflow-wrap:break-word;word-break:break-word;min-width:0}.results-table{font-size:.7rem;display:block;overflow-x:auto;white-space:nowrap}.results-table th,.results-table td{padding:.35rem .4rem}.empty-state{padding:1.5rem .75rem}.empty-state h3{font-size:.92rem}.empty-state p{font-size:.75rem}}@media(pointer:coarse){.btn,.option-button,.matching-item,.filter-btn,.nav-link{min-height:44px}.nav-link{padding:.6rem .85rem}.mark-btn{width:56px;height:56px}}@supports (padding: env(safe-area-inset-bottom)){.navbar{padding-top:env(safe-area-inset-top)}.container{padding-bottom:env(safe-area-inset-bottom)}}.profile-header{display:flex;align-items:center;gap:1.5rem;padding:2rem;background:var(--welcome-bg);color:var(--welcome-text);border-radius:var(--radius-xl);margin-bottom:2rem;position:relative;overflow:hidden}.profile-avatar{width:72px;height:72px;border-radius:50%;background:#fff3;color:#fff;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:800;flex-shrink:0;border:3px solid rgba(255,255,255,.3)}.profile-info h2{margin-bottom:.25rem;color:inherit}.profile-stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(155px,1fr));gap:.85rem;margin-bottom:1.5rem}.profile-stat-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius);padding:1.25rem;text-align:center}.profile-stat-value{font-size:1.65rem;font-weight:800;color:var(--primary);line-height:1}.profile-stat-label{font-size:.8rem;color:var(--text-secondary);margin-top:.35rem}.chart-container{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:1.5rem;margin-bottom:1.5rem}.chart-container h3{margin-bottom:1rem;font-size:1.05rem;font-weight:700}.chart-bar-row{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.chart-bar-label{min-width:80px;font-size:.8rem;color:var(--text-secondary);text-align:right}.chart-bar-track{flex:1;height:24px;background:var(--border-light);border-radius:var(--radius-full);overflow:hidden;position:relative}.chart-bar-fill{height:100%;border-radius:var(--radius-full);transition:width .8s cubic-bezier(.4,0,.2,1);display:flex;align-items:center;justify-content:flex-end;padding-right:.5rem;font-size:.7rem;font-weight:700;color:#fff;min-width:fit-content}.chart-bar-fill.primary{background:linear-gradient(90deg,var(--primary),var(--accent))}.chart-bar-fill.success{background:var(--success)}.chart-bar-fill.warning{background:var(--warning)}.chart-bar-fill.error{background:var(--error)}.chart-bar-fill.accent{background:var(--accent)}.chart-bar-value{min-width:40px;text-align:right;font-size:.8rem;font-weight:600}.matching-pairs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:.75rem;margin:1.5rem 0}.matching-pair-card{padding:1rem;background:var(--glass-bg);border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;text-align:center;font-weight:600;transition:all var(--transition);-webkit-user-select:none;user-select:none;min-height:60px;display:flex;align-items:center;justify-content:center}.matching-pair-card:hover:not(.matched):not(.wrong){border-color:var(--primary);background:var(--primary-light);box-shadow:0 0 12px var(--primary-glow);transform:translateY(-2px)}.matching-pair-card.selected{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border-color:transparent;box-shadow:0 4px 14px var(--primary-glow)}.matching-pair-card.matched{background:var(--success);color:#fff;border-color:transparent;cursor:default;opacity:.8}.matching-pair-card.wrong{background:var(--error);color:#fff;border-color:transparent;animation:shake .4s ease}@media(max-width:480px){.profile-header{flex-direction:column;text-align:center;padding:1.5rem}.profile-stats-grid{grid-template-columns:repeat(2,1fr)}.matching-pairs-grid{grid-template-columns:repeat(2,1fr);gap:.5rem}.matching-pair-card{padding:.75rem;min-height:48px;font-size:.85rem}}.site-footer{margin-top:auto;border-top:1px solid var(--border);background:var(--surface)}.footer-container{max-width:1120px;margin:0 auto;padding:.5rem 1.5rem;display:flex;justify-content:space-between;align-items:center;gap:.75rem;flex-wrap:wrap}.footer-compact{display:flex;align-items:center;gap:.75rem}.footer-logo{font-size:.78rem;font-weight:700;letter-spacing:-.02em;color:var(--primary);flex-shrink:0}.footer-right{display:flex;gap:.5rem;align-items:center}.footer-right a{color:var(--text-secondary);font-size:.72rem;text-decoration:none;transition:color var(--transition)}.footer-right a:hover{color:var(--accent)}.footer-divider{color:var(--text-tertiary);font-size:.65rem;opacity:.5}.footer-bottom{color:var(--text-secondary);font-size:.68rem}.footer-age{font-size:.66rem;font-weight:700;color:var(--text-secondary);border:1px solid var(--border);border-radius:var(--radius-full);padding:.05rem .35rem;flex-shrink:0}.site-footer .footer-right{flex-wrap:wrap;justify-content:flex-end}@media(max-width:480px){.footer-container{flex-direction:column;align-items:center;gap:.25rem;padding:.4rem 1rem}.footer-compact{gap:.5rem}.site-footer .footer-right{justify-content:center}.footer-bottom{text-align:center}}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.folder-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:.85rem;margin-bottom:1rem}.grid-purpose-hint{margin:0 0 .75rem;font-size:.8rem;color:var(--text-secondary);padding-left:.15rem}.folder-tile{position:relative;display:flex;flex-direction:column;align-items:stretch;gap:.5rem;padding:.6rem .6rem .85rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);cursor:pointer;transition:transform .18s cubic-bezier(.34,1.56,.64,1),box-shadow var(--transition),border-color var(--transition);text-align:left;font-family:inherit;color:var(--text);outline:none}.folder-tile:hover{transform:translateY(-3px);box-shadow:var(--shadow-md),0 0 24px var(--folder-glow, var(--primary-glow));border-color:var(--folder-tint, var(--primary))}.folder-tile:focus-visible{border-color:var(--folder-tint, var(--primary));box-shadow:0 0 0 3px var(--folder-tint-soft, var(--primary-light)),var(--shadow-sm)}.folder-tile:hover .folder-tile-icon{transform:translateY(-2px) rotate(-1.5deg)}.folder-tile:hover .folder-tile-icon:after{opacity:1}.folder-tile-icon-wrap{width:100%;aspect-ratio:4 / 3;display:flex;align-items:center;justify-content:center;position:relative;pointer-events:none}.folder-tile-icon{width:86%;height:86%;position:relative;transition:transform .25s cubic-bezier(.34,1.56,.64,1);filter:drop-shadow(0 4px 10px rgba(0,0,0,.1))}.folder-tile-icon svg{width:100%;height:100%;display:block;overflow:visible}.folder-tile-icon:after{content:"";position:absolute;left:8%;right:8%;bottom:-6%;height:8%;background:radial-gradient(ellipse at center,rgba(0,0,0,.18),transparent 70%);opacity:.7;transition:opacity var(--transition);pointer-events:none}.folder-tile-count-pill{position:absolute;top:8%;right:8%;font-size:.7rem;font-weight:700;padding:.12rem .5rem;border-radius:var(--radius-full);background:#ffffffeb;color:var(--folder-tint, var(--text));border:1px solid rgba(0,0,0,.06);box-shadow:0 1px 3px #00000014;letter-spacing:-.01em;pointer-events:none}.folder-tile-name{font-size:.88rem;font-weight:700;color:var(--text);letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0 .15rem}.folder-tile-sub{font-size:.72rem;color:var(--text-secondary);padding:0 .15rem;margin-top:-.2rem}.folder-tile.empty .folder-tile-icon{opacity:.78}.folder-tile.empty .folder-tile-name{color:var(--text-secondary);font-weight:600}.folder-tile-menu-btn{position:absolute;top:.4rem;right:.4rem;width:26px;height:26px;border-radius:var(--radius-full);background:#ffffffd9;border:1px solid var(--border-light);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:1rem;line-height:1;color:var(--text-secondary);opacity:0;transition:opacity var(--transition),background var(--transition),color var(--transition);z-index:2}.folder-tile:hover .folder-tile-menu-btn,.folder-tile:focus-within .folder-tile-menu-btn,.folder-tile-menu-btn:focus-visible{opacity:1}@media(hover:none){.folder-tile-menu-btn{opacity:1}}.folder-tile-menu-btn:hover{background:#fff;color:var(--text)}.folder-tile.is-drop-target{border-color:var(--folder-tint, var(--accent));box-shadow:0 0 0 3px var(--folder-tint-soft, var(--accent-light)),var(--shadow-md);transform:translateY(-3px) scale(1.02)}.folder-tile.is-drop-target .folder-tile-icon{transform:translateY(-3px) rotate(-3deg) scale(1.04)}.folder-tile.is-unfoldered{background:repeating-linear-gradient(45deg,var(--glass-bg),var(--glass-bg) 8px,transparent 8px,transparent 16px),var(--glass-bg);border-style:dashed;border-color:var(--border)}.folder-tile.is-new{background:transparent;border:1.5px dashed var(--border);box-shadow:none;align-items:center;justify-content:center;padding:1rem .6rem;min-height:100%}.folder-tile.is-new:hover{border-color:var(--accent);background:var(--accent-light);transform:translateY(-2px);box-shadow:0 0 20px var(--accent-glow)}.folder-tile.is-new .folder-tile-plus{width:44px;height:44px;border-radius:var(--radius-full);background:var(--accent-light);color:var(--accent);display:inline-flex;align-items:center;justify-content:center;font-size:1.6rem;font-weight:300;line-height:1;margin-bottom:.5rem;transition:transform var(--transition-spring),background var(--transition)}.folder-tile.is-new:hover .folder-tile-plus{transform:rotate(90deg) scale(1.08);background:var(--accent);color:#fff}.folder-tile.is-new .folder-tile-name{text-align:center;color:var(--text-secondary)}.folder-tile.is-creating{border:1.5px solid var(--accent);background:var(--surface);cursor:default;align-items:stretch;justify-content:flex-start;padding:.7rem;gap:.5rem}.folder-tile.is-creating input,.folder-tile.is-creating textarea{width:100%;padding:.4rem .55rem;font-size:.82rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--input-bg)}.folder-tile-color-row{display:flex;flex-wrap:wrap;gap:.3rem;justify-content:center}.folder-tile-color-swatch{width:18px;height:18px;border-radius:50%;border:1px solid var(--border);cursor:pointer;padding:0;position:relative}.folder-tile-color-swatch.selected{outline:2px solid var(--text);outline-offset:1px}.folder-tile-actions{display:flex;gap:.35rem}.folder-tile-actions .btn-sm{flex:1;font-size:.72rem;padding:.3rem .5rem}.empty-state-action{margin-top:.75rem}.book-pill{display:inline-flex;align-items:center;gap:.3rem;padding:.15rem .5rem;border-radius:var(--radius-full);font-size:.7rem;font-weight:500;font-family:inherit;max-width:160px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer;background:color-mix(in srgb,var(--book-tint, var(--primary)) 13%,transparent);color:var(--book-tint, var(--primary));border:1px solid color-mix(in srgb,var(--book-tint, var(--primary)) 35%,transparent);transition:background var(--transition)}.book-pill:hover{background:color-mix(in srgb,var(--book-tint, var(--primary)) 24%,transparent)}.book-pill:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.book-pill{max-width:230px}.book-pill-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.book-pill-pos{flex:0 0 auto;font-variant-numeric:tabular-nums;font-weight:600;opacity:.75;padding-left:.1rem}.folder-tile-book{align-self:flex-start;margin-top:-.15rem}.folder-detail-book{align-self:flex-start;margin-top:.35rem}.lesson-card.is-in-book:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;border-top-left-radius:var(--radius);border-bottom-left-radius:var(--radius);background:var(--book-tint, var(--primary));opacity:.85}.lesson-card.is-in-book{padding-left:1.25rem}.lesson-group-head{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem;padding:.3rem .6rem;border-left:4px solid var(--book-tint, var(--primary));border-radius:0 var(--radius) var(--radius) 0;background:color-mix(in srgb,var(--book-tint, var(--primary)) 9%,transparent)}.lesson-group-head.is-loose{border-left-color:var(--border);background:transparent}.lesson-group-title{font-size:.8rem;font-weight:700;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lesson-group-count{flex:0 0 auto;margin-right:auto;font-size:.72rem;font-variant-numeric:tabular-nums;color:var(--text-secondary)}.rename-btn{background:transparent;border:none;padding:.1rem .3rem;margin-left:.35rem;border-radius:var(--radius-sm);font-size:.8rem;line-height:1;cursor:pointer;color:var(--text-secondary);font-family:inherit}.rename-btn:hover{background:var(--surface-hover);color:var(--accent)}.rename-btn:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.folder-tile-menu{position:absolute;top:2.4rem;right:.4rem;z-index:12;min-width:180px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 12px 32px #0000002e;padding:.3rem;display:flex;flex-direction:column}.folder-tile-menu button{text-align:left;background:transparent;border:none;padding:.4rem .6rem;font-size:.78rem;color:var(--text);cursor:pointer;border-radius:var(--radius-sm);display:flex;align-items:center;gap:.45rem;font-family:inherit}.folder-tile-menu button:hover{background:var(--surface)}.folder-tile-menu button.danger{color:var(--danger)}.folder-tile-menu .folder-tile-menu-divider{height:1px;background:var(--border);margin:.25rem 0}.folder-tile-menu-color-row{display:flex;gap:.3rem;padding:.35rem .5rem .5rem;flex-wrap:wrap}.folder-detail-header{display:flex;align-items:center;gap:.85rem;padding:.85rem 1rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-left:4px solid var(--folder-tint, var(--border));border-radius:var(--radius-lg);margin-bottom:1rem;position:relative}.folder-detail-back{background:transparent;border:1px solid var(--border);border-radius:var(--radius-full);padding:.3rem .7rem;font-size:.78rem;cursor:pointer;color:var(--text-secondary);font-family:inherit;display:inline-flex;align-items:center;gap:.3rem;transition:all var(--transition)}.folder-detail-back:hover{border-color:var(--text);color:var(--text);background:var(--surface)}.folder-detail-icon{width:36px;height:36px;flex-shrink:0}.folder-detail-icon svg{width:100%;height:100%;display:block}.folder-detail-title{font-size:1.05rem;font-weight:800;letter-spacing:-.01em;margin:0;overflow-wrap:anywhere}.based-on{font-size:.75rem;font-style:italic;color:var(--text-secondary);overflow-wrap:anywhere}.based-on--tile{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.folder-tile-market{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem;margin-top:.3rem;font-size:.72rem;font-weight:600;color:var(--text-secondary)}.folder-detail-sub{font-size:.78rem;color:var(--text-secondary);margin-top:.1rem}.folder-detail-meta{display:flex;flex-direction:column;min-width:0;flex:1}.folder-detail-actions{margin-left:auto;display:flex;gap:.35rem;align-items:center;position:relative}@media(max-width:640px){.folder-detail-header{flex-wrap:wrap;row-gap:.5rem}.folder-detail-meta{flex:1 1 7rem}}@media(max-width:480px){.book-lesson-row .book-lesson-title{flex-basis:100%}.folder-grid{grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:.6rem}.folder-tile{padding:.45rem .45rem .65rem;border-radius:var(--radius)}.folder-tile-name{font-size:.82rem}.folder-tile-sub{font-size:.68rem}.folder-tile-menu-btn{opacity:1}.folder-detail-header{padding:.65rem .75rem;gap:.6rem}.folder-detail-icon{width:30px;height:30px}.folder-detail-title{font-size:.95rem}}.lesson-card.is-dragging{opacity:.45;transform:scale(.98)}.student-analytics-row{display:flex;justify-content:space-between;align-items:center;gap:.85rem;padding:.65rem .85rem;cursor:pointer;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);transition:background var(--transition),border-color var(--transition),transform var(--transition),box-shadow var(--transition)}.student-analytics-row:hover{background:var(--surface-hover);border-color:var(--primary);box-shadow:0 2px 12px var(--primary-glow);transform:translateY(-1px)}.student-analytics-row:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.student-analytics-avatar{width:36px;height:36px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;flex-shrink:0;letter-spacing:0}.student-analytics-main{display:flex;align-items:center;gap:.7rem;min-width:0;flex:1}.student-analytics-text{display:flex;flex-direction:column;min-width:0}.student-analytics-name{font-weight:600;display:inline-flex;align-items:center;gap:.4rem;flex-wrap:wrap}.student-analytics-meta{font-size:.75rem;color:var(--text-tertiary);display:inline-flex;gap:.35rem;flex-wrap:wrap;align-items:center}.student-analytics-stats{display:flex;gap:.35rem;flex-wrap:wrap;align-items:center}.student-stat-chip{display:inline-flex;align-items:center;gap:.25rem;padding:.18rem .5rem;border-radius:var(--radius-full);font-size:.72rem;font-weight:600;white-space:nowrap;line-height:1}.student-stat-chip.done{background:var(--success-light);color:var(--success)}.student-stat-chip.pending{background:var(--accent-light, rgba(218,112,40,.12));color:var(--accent)}.student-stat-chip.avg{background:var(--primary-light);color:var(--primary)}.student-analytics-chevron{color:var(--text-secondary);font-size:1.25rem;line-height:1;flex-shrink:0;transition:transform var(--transition),color var(--transition)}.student-analytics-row:hover .student-analytics-chevron{color:var(--primary);transform:translate(2px)}.students-breadcrumb{display:flex;align-items:center;gap:.35rem;font-size:.78rem;color:var(--text-secondary);margin-bottom:.5rem;flex-wrap:wrap}.students-breadcrumb .crumb-link{background:none;border:none;padding:0;margin:0;font:inherit;color:var(--primary);cursor:pointer;text-decoration:none}.students-breadcrumb .crumb-link:hover{text-decoration:underline}.students-breadcrumb .crumb-sep{color:var(--text-tertiary);-webkit-user-select:none;user-select:none}.students-breadcrumb .crumb-current{color:var(--text);font-weight:600;max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.group-student-search{display:flex;align-items:center;gap:.4rem;margin-bottom:.85rem;padding:.4rem .7rem;border-radius:var(--radius-full);background:var(--surface);border:1px solid var(--border);transition:border-color var(--transition),box-shadow var(--transition)}.group-student-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.group-student-search input{flex:1;border:none;background:transparent;outline:none;padding:.25rem 0;font-size:.85rem;color:var(--text)}.group-student-search .gss-icon{color:var(--text-secondary);font-size:.9rem;line-height:1}.group-student-search .gss-clear{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:.95rem;line-height:1;padding:0 .2rem}.group-student-search .gss-clear:hover{color:var(--text)}.tab-toolbar{display:flex;align-items:center;gap:.4rem;flex-wrap:wrap}.toolbar-filter-btn{display:inline-flex;align-items:center;gap:.3rem;font-size:.75rem;padding:.25rem .6rem;cursor:pointer;border:1px solid var(--border);border-radius:var(--radius-full);background:var(--surface);color:var(--text);transition:border-color var(--transition),background var(--transition)}.toolbar-filter-btn:hover{border-color:var(--primary);background:var(--surface-hover)}.toolbar-filter-btn.is-active{background:var(--accent);border-color:var(--accent);color:#fff}.toolbar-filter-btn.is-active:hover{filter:brightness(1.05)}.toolbar-filter-count{background:#ffffff40;padding:0 .35rem;border-radius:var(--radius-full);font-size:.7rem;font-weight:700}.toolbar-clear-btn{font-size:.7rem;padding:.2rem .55rem;cursor:pointer;border:none;background:transparent;color:var(--text-secondary);text-decoration:underline}.toolbar-clear-btn:hover{color:var(--text)}.toolbar-search-btn{display:inline-flex;align-items:center;justify-content:center;padding:.25rem .6rem;border-radius:var(--radius-full);border:1px solid var(--border);background:var(--surface);color:var(--text-secondary);font-size:.85rem;line-height:1.2;cursor:pointer;transition:border-color var(--transition),background var(--transition),color var(--transition)}.toolbar-search-btn:hover{border-color:var(--primary);background:var(--surface-hover);color:var(--text)}.toolbar-search{display:inline-flex;align-items:center;gap:.35rem;padding:.15rem .6rem;border-radius:var(--radius-full);background:var(--surface);border:1px solid var(--border);transition:border-color var(--transition),box-shadow var(--transition)}.toolbar-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.toolbar-search input{border:none;background:transparent;outline:none;padding:.15rem 0;font-size:.8rem;color:var(--text);width:clamp(110px,26vw,190px)}.toolbar-search .gss-icon{color:var(--text-secondary);font-size:.85rem;line-height:1}.toolbar-search .gss-clear{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:.95rem;line-height:1;padding:0 .2rem}.toolbar-search .gss-clear:hover{color:var(--text)}.filter-panel{margin-top:.6rem;padding:.7rem .85rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);display:flex;flex-direction:column;gap:.55rem}.filter-facet{display:flex;align-items:center;flex-wrap:wrap;gap:.35rem}.filter-facet-label{font-size:.7rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em;min-width:60px}.students-section{margin-bottom:1.75rem;padding:1.25rem 1.25rem 1rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg)}.students-section-header{margin-bottom:.85rem}.students-section-title-row{display:flex;align-items:center;gap:.6rem}.students-section-title{margin:0;font-size:1.05rem;font-weight:700}.students-section-count{display:inline-flex;align-items:center;justify-content:center;min-width:1.6rem;height:1.4rem;padding:0 .45rem;border-radius:var(--radius-full);background:var(--primary-light);color:var(--primary);font-size:.72rem;font-weight:700}.students-section-desc{margin:.25rem 0 0;color:var(--text-secondary);font-size:.82rem;line-height:1.4}.roster-add-row{display:flex;gap:.5rem;margin:.85rem 0 .5rem;flex-wrap:wrap}.roster-add-row input{flex:1;min-width:200px}.roster-list{display:flex;flex-direction:column;gap:.4rem;margin-top:.6rem}.roster-row{display:flex;align-items:center;gap:.75rem;padding:.55rem .85rem;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);cursor:pointer;transition:background var(--transition),border-color var(--transition),transform var(--transition),box-shadow var(--transition)}.roster-row:hover{background:var(--surface-hover);border-color:var(--primary);box-shadow:0 2px 12px var(--primary-glow);transform:translateY(-1px)}.roster-row:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.roster-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;flex-shrink:0}.roster-text{display:flex;flex-direction:column;min-width:0;flex:1}.roster-name{display:inline-flex;align-items:baseline;gap:.4rem;font-size:.9rem;flex-wrap:wrap}.roster-display{font-weight:600;color:var(--text)}.roster-username{font-weight:400;color:var(--text-secondary);font-size:.82rem}.roster-meta{font-size:.72rem;color:var(--text-tertiary);margin-top:.1rem}.roster-actions{display:flex;align-items:center;gap:.5rem;flex-shrink:0}.roster-alias-btn{font-size:.72rem!important;padding:.25rem .55rem!important}.roster-details{display:inline-flex;align-items:center;gap:.2rem;font-size:.75rem;font-weight:600;color:var(--primary);white-space:nowrap}.roster-chevron{display:inline-block;font-size:1.1rem;line-height:1;transition:transform var(--transition)}.roster-row:hover .roster-chevron{transform:translate(2px)}.roster-edit{display:flex;gap:.4rem;align-items:center;flex:1;flex-wrap:wrap}.roster-edit input{flex:1;min-width:150px}@media(max-width:540px){.roster-row{flex-wrap:wrap;gap:.5rem}.roster-text{flex-basis:calc(100% - 44px)}.roster-stats{width:100%}.roster-actions{width:100%;justify-content:flex-end}.roster-alias-btn{order:1}.roster-details{order:2}}.activity-chip{display:inline-flex;align-items:center;gap:.3rem;padding:.25rem .65rem;border-radius:var(--radius-full);border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:.78rem;font-weight:500;cursor:pointer;transition:background var(--transition),border-color var(--transition),color var(--transition)}.activity-chip:hover{border-color:var(--primary);background:var(--surface-hover)}.activity-chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}.activity-chip.is-active:hover{filter:brightness(1.05)}.subject-chip{display:inline-flex;align-items:center;gap:.25rem;max-width:100%;padding:.18rem .5rem;border-radius:var(--radius-full);border:1px solid var(--border);background:var(--surface);color:var(--text-secondary);font-size:.72rem;font-weight:600;line-height:1.1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.folder-tile>.subject-chip{align-self:flex-start}.subject-picker{display:flex;flex-wrap:wrap;gap:.35rem}.subject-picker .activity-chip:disabled{cursor:not-allowed;opacity:.75}.activity-chip-dot{width:8px;height:8px;border-radius:50%;display:inline-block;flex-shrink:0}.activity-groups{display:flex;flex-direction:column;gap:1rem}.activity-group{display:flex;flex-direction:column;gap:.4rem}.activity-group-header{display:flex;align-items:center;gap:.5rem;padding-bottom:.35rem;border-bottom:1px solid var(--border)}.activity-group-label{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--text-secondary)}.activity-group-count{font-size:.72rem;font-weight:600;color:var(--text-tertiary);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-full);padding:.05rem .45rem}.activity-group-rows{display:flex;flex-direction:column;gap:.4rem}.activity-group .roster-list{margin-top:0}.roster-stats{display:flex;align-items:center;gap:.35rem;flex-wrap:wrap;flex-shrink:0}.segmented{display:inline-flex;border-radius:var(--radius-full);border:1px solid var(--border);background:var(--surface);overflow:hidden;flex-shrink:0}.segmented-btn{padding:.35rem .85rem;min-height:32px;font-size:.78rem;font-weight:500;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;white-space:nowrap;transition:background var(--transition),color var(--transition)}.segmented-btn+.segmented-btn{border-left:1px solid var(--border)}.segmented-btn:hover{background:var(--surface-hover);color:var(--text)}.segmented-btn[aria-pressed=true]{background:var(--accent);color:#fff;font-weight:600}.segmented-btn[aria-pressed=true]:hover{background:var(--accent-hover);color:#fff}.segmented-btn:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--accent)}.segmented.segmented-sm{border-radius:var(--radius)}.segmented.segmented-sm .segmented-btn{padding:.25rem .7rem;min-height:28px;font-size:.75rem}.switch-field{display:inline-flex;align-items:center;gap:.55rem;padding:0;border:none;background:none;color:var(--text);font-size:.85rem;text-align:left;cursor:pointer}.switch-track{position:relative;flex-shrink:0;width:40px;height:22px;border-radius:var(--radius-full);background:var(--border);transition:background var(--transition)}.switch-knob{position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:var(--shadow-sm);transition:transform var(--transition)}.switch-label{line-height:1.3}.switch-field:hover .switch-track{background:var(--text-tertiary)}.switch-field[aria-checked=true] .switch-track{background:var(--accent)}.switch-field[aria-checked=true]:hover .switch-track{background:var(--accent-hover)}.switch-field[aria-checked=true] .switch-knob{transform:translate(18px)}.switch-field:focus-visible{outline:none}.switch-field:focus-visible .switch-track{box-shadow:0 0 0 3px var(--primary-light)}.speak-btn{display:inline-flex;align-items:center;justify-content:center;vertical-align:middle;width:1.85em;height:1.85em;padding:0;margin-left:.4em;font-size:.9rem;line-height:1;color:var(--accent);background:var(--accent-light);border:1px solid color-mix(in srgb,var(--accent) 35%,transparent);border-radius:50%;cursor:pointer;transition:color var(--transition),background var(--transition),border-color var(--transition),transform var(--transition)}.speak-btn:hover:not(:disabled){color:#fff;background:var(--accent);border-color:var(--accent);transform:scale(1.08)}.speak-btn:active:not(:disabled){transform:scale(.96)}.speak-btn:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.speak-btn:disabled{cursor:default}.speak-btn.is-busy{color:#fff;background:var(--accent);border-color:var(--accent);animation:speak-pulse 1.1s ease-in-out infinite}@keyframes speak-pulse{0%{box-shadow:0 0 0 0 var(--accent-glow)}70%{box-shadow:0 0 0 7px transparent}to{box-shadow:0 0 0 0 transparent}}.speak-btn-locked{color:var(--text-tertiary);background:transparent;border-color:var(--border)}.speak-btn-locked:hover:not(:disabled){color:var(--text-secondary);background:var(--surface-hover);border-color:var(--border);transform:none}.speak-btn-md{font-size:1.2rem;margin-left:.5rem}.toolbar-select{font-size:.75rem;padding:.25rem .6rem;min-height:30px;max-width:180px;border:1px solid var(--border);border-radius:var(--radius-full);background:var(--surface);color:var(--text);cursor:pointer;transition:border-color var(--transition),background var(--transition)}.toolbar-select:hover{border-color:var(--primary);background:var(--surface-hover)}.toolbar-select:focus-visible{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.page-toast{position:fixed;left:50%;bottom:1.25rem;bottom:calc(1.25rem + env(safe-area-inset-bottom));transform:translate(-50%);z-index:1200;max-width:min(92vw,460px);padding:.7rem 1.1rem;border-radius:var(--radius-full);font-size:.88rem;font-weight:600;text-align:center;box-shadow:var(--shadow-lg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);animation:toast-in .28s cubic-bezier(.34,1.56,.64,1)}.page-toast.success{background:var(--success-light);color:var(--success);border:1px solid var(--success)}.page-toast.error{background:var(--error-light);color:var(--error);border:1px solid var(--error)}.page-toast.warning{background:var(--warning-light);color:var(--warning);border:1px solid var(--warning)}.page-toast-action{margin-left:.7rem;padding:0;border:none;background:none;color:inherit;font:inherit;font-weight:800;text-decoration:underline;cursor:pointer}.trash-row{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;padding:.5rem 0;border-top:1px solid var(--border)}.trash-row:first-of-type{border-top:none}.trash-row-main{flex:1 1 12rem;min-width:0}.trash-row-title{display:block;font-weight:600;font-size:.9rem}.trash-row-meta{display:block;font-size:.78rem;color:var(--text-secondary)}.trash-row-actions{display:flex;gap:.4rem;flex-shrink:0}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,.75rem)}to{opacity:1;transform:translate(-50%)}}@media(prefers-reduced-motion:reduce){.page-toast{animation:none}}.create-panel{margin-bottom:1.5rem;border-radius:var(--radius-lg);border:1px solid var(--glass-border);background:var(--glass-bg);overflow:hidden}.create-panel-head{display:flex;align-items:center;gap:.75rem;padding:.9rem 1.25rem;border-bottom:1px solid var(--border-light)}.create-panel-title{margin:0;font-size:1rem;font-weight:700}.create-panel-sub{margin:.15rem 0 0;font-size:.8rem;color:var(--text-secondary)}.create-panel-close{margin-left:auto;border:none;background:transparent;color:var(--text-secondary);font-size:1.15rem;line-height:1;padding:.3rem .5rem;border-radius:var(--radius);cursor:pointer}.create-panel-close:hover{background:var(--surface-hover);color:var(--text)}.create-panel-body{padding:1.25rem}.create-panel-foot{position:sticky;bottom:0;display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;padding:.75rem 1.25rem;border-top:1px solid var(--border-light);background:var(--surface);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.create-panel-clear,.create-panel-clear:hover{color:var(--error)}.create-panel-clear:hover{border-color:var(--error)}.format-card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem}.format-card{min-width:0;padding:1.1rem;border-radius:var(--radius);border:2px solid var(--border);background:var(--surface);text-align:left;cursor:pointer;transition:border-color var(--transition),background var(--transition),transform var(--transition)}.format-card:hover{border-color:var(--primary);transform:translateY(-2px)}.format-card:focus-visible{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.format-card[aria-pressed=true]{border-color:var(--primary);background:var(--primary-light)}.format-card-icon{font-size:1.5rem;margin-bottom:.5rem}.format-card-title{font-weight:700;margin-bottom:.25rem;color:var(--text)}.format-card-desc{font-size:.8rem;color:var(--text-secondary);line-height:1.4}.detail-head{display:flex;align-items:flex-start;gap:1rem;flex-wrap:wrap;margin:.75rem 0 1rem;padding-bottom:.9rem;border-bottom:1px solid var(--border-light)}.detail-head-main{flex:1 1 16rem;min-width:0}.detail-head-title{margin:0;font-size:1.25rem;font-weight:700;letter-spacing:-.01em;overflow-wrap:anywhere}.detail-head-badges{display:flex;align-items:center;gap:.4rem;flex-wrap:wrap;margin-top:.45rem}.detail-head-meta{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;margin-top:.4rem;font-size:.8rem;color:var(--text-secondary)}.detail-head-meta .is-overdue{color:var(--error);font-weight:600}.detail-head-actions{display:flex;align-items:center;gap:.4rem;flex-wrap:wrap;position:relative}@media(max-width:640px){.detail-head-actions{width:100%}}.content-layout{display:flex;align-items:flex-start;justify-content:center;gap:1.25rem}.content-main{flex:0 1 760px;min-width:0}.content-toc{flex:0 0 230px;position:sticky;top:1rem;max-height:calc(100vh - 2rem);overflow-y:auto;padding:.6rem;border-radius:var(--radius-lg);background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:var(--shadow-md)}.content-toc-title{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);padding:.25rem .5rem .5rem}.content-toc-item{display:flex;align-items:center;gap:.5rem;width:100%;text-align:left;padding:.5rem .6rem;border:none;border-left:3px solid transparent;border-radius:var(--radius-sm);background:transparent;cursor:pointer;color:var(--text);font-size:.88rem;font-weight:500;line-height:1.3}.content-toc-item:hover{background:var(--bg)}.content-toc-item.active{background:var(--bg);border-left-color:var(--accent);font-weight:700}.content-toc-num{flex:0 0 auto;font-size:.78rem;font-weight:600;color:var(--text-secondary)}.content-toc-item.active .content-toc-num{color:var(--accent)}.content-toc-label{overflow:hidden;text-overflow:ellipsis}@media(max-width:900px){.content-layout{flex-direction:column;align-items:stretch;gap:.9rem}.content-main{flex:1 1 auto}.content-toc{order:-1;position:static;flex:none;display:flex;gap:.3rem;overflow-x:auto;max-height:none;padding:.45rem}.content-toc-title{display:none}.content-toc-item{flex:0 0 auto;width:auto;border-left:none;border:1px solid transparent;white-space:nowrap;padding:.35rem .6rem}.content-toc-item.active{border-color:var(--accent)}.content-toc-label{max-width:180px}}.editor-layout{display:flex;gap:1rem;align-items:flex-start}.editor-main{flex:1 1 auto;min-width:0}.editor-outline{flex:0 0 220px;position:sticky;top:1rem;max-height:calc(100vh - 2rem);overflow-y:auto;padding:.6rem;border-radius:var(--radius);background:var(--bg);border:1px solid var(--border)}.editor-outline-page{display:flex;align-items:center;gap:.4rem;width:100%;text-align:left;padding:.4rem .5rem;border:none;border-radius:var(--radius-sm);background:transparent;cursor:pointer;font-size:.8rem;font-weight:700;color:var(--accent)}.editor-outline-page:hover{background:var(--glass-bg)}.editor-outline-page.active{background:var(--glass-bg);box-shadow:inset 3px 0 0 var(--accent)}.editor-outline-item{display:flex;align-items:center;gap:.45rem;width:100%;text-align:left;padding:.35rem .5rem;border:none;border-radius:var(--radius-sm);background:transparent;cursor:pointer;font-size:.82rem;color:var(--text)}.editor-outline-item.indented{padding-left:1rem}.editor-outline-item:hover{background:var(--glass-bg)}.editor-outline-summary{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-secondary);font-weight:400}@media(max-width:900px){.editor-layout{flex-direction:column;align-items:stretch}.editor-outline{display:none}.editor-outline.multi-page{display:flex;order:-1;position:static;flex:none;max-height:none;overflow-x:auto;gap:.3rem;padding:.45rem}.editor-outline.multi-page .editor-outline-item{display:none}.editor-outline.multi-page .editor-outline-page{flex:0 0 auto;width:auto;white-space:nowrap;border:1px solid transparent}.editor-outline.multi-page .editor-outline-page.active{border-color:var(--accent);box-shadow:none}}.block-row-list{display:flex;flex-direction:column;gap:.4rem}.block-row{display:flex;align-items:center;gap:.6rem;padding:.5rem .65rem;border-radius:var(--radius);cursor:pointer;text-align:left;background:var(--glass-bg);border:1px solid var(--glass-border);transition:border-color var(--transition),box-shadow var(--transition),opacity var(--transition)}.block-row:hover,.block-row:focus-visible{border-color:var(--primary);box-shadow:0 0 12px var(--primary-glow)}.block-row.has-error{outline:2px solid var(--error);outline-offset:2px}.block-row.flash{outline:2px solid var(--accent);outline-offset:2px}.block-row.dragging{opacity:.4}.block-row-grip{cursor:grab;color:var(--text-tertiary);-webkit-user-select:none;user-select:none;font-size:.9rem;line-height:1}.block-row-index{min-width:1.4rem;font-weight:700;font-size:.8rem;color:var(--text-secondary)}.block-row-icon{font-size:1.15rem;line-height:1}.block-row-label{font-weight:700;font-size:.85rem;white-space:nowrap}.block-row-summary{flex:1;min-width:0;font-size:.8rem;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.block-row-ctrls{display:flex;gap:.2rem;margin-left:auto}.block-row-ctrl{width:24px;height:24px;padding:0;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:var(--radius-sm);cursor:pointer;font-size:.85rem;line-height:1}.block-row-ctrl:disabled{opacity:.35;cursor:default}@media(max-width:480px){.block-row{gap:.4rem;padding:.45rem .5rem}.block-row-label{display:none}}.block-assignment{font-weight:700;color:var(--text);margin-bottom:.6rem;line-height:1.4;white-space:pre-wrap;overflow-wrap:anywhere}.block-assignment.is-compact{font-size:.8rem;margin-bottom:.3rem}.book-drop-indicator,.block-drop-indicator{height:3px;border-radius:2px;background:var(--accent);box-shadow:0 0 6px var(--primary-glow)}.book-lesson-row{display:flex;align-items:center;gap:.6rem;padding:.5rem .75rem;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;flex-wrap:wrap;transition:border-color .15s ease,background .15s ease}.book-lesson-row:hover{border-color:var(--accent);background:var(--surface-hover)}.book-lesson-row .book-lesson-title{flex:1;font-weight:600;min-width:6rem}.book-lesson-row:hover .book-lesson-title{color:var(--accent)}.book-lesson-row button{cursor:pointer}.book-lesson-row .book-lesson-grip{cursor:grab}.live-monitor{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;display:flex;flex-direction:column;background:var(--bg)}.live-monitor-head{flex:0 0 auto;padding:.8rem 1.25rem .7rem;padding-top:max(.8rem,env(safe-area-inset-top));border-bottom:1px solid var(--glass-border);background:var(--glass-bg)}.live-monitor-head .detail-head{margin:0;padding-bottom:0;border-bottom:none}.live-monitor-head .detail-head-title{font-size:1.15rem}.live-monitor-body{flex:1 1 auto;overflow:auto;padding:1rem 1.25rem 2rem}.live-monitor-inner{max-width:1480px;margin:0 auto}.live-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem;margin-bottom:1.25rem}.live-summary>div{display:flex;flex-direction:column;gap:.25rem;padding:1rem 1.2rem;border:1px solid var(--glass-border);border-radius:var(--radius-lg);background:var(--glass-bg)}.live-summary strong{font-size:1.65rem;line-height:1.2;font-variant-numeric:tabular-nums}.live-summary small{font-size:1rem;font-weight:500;color:var(--text-secondary)}.live-summary span{font-size:.8rem;color:var(--text-secondary)}.live-summary .has-attention{border-color:var(--warning)}.live-summary .has-attention strong{color:var(--warning)}.live-workspace{display:grid;grid-template-columns:230px minmax(0,1fr);align-items:start;gap:1.25rem}.live-roster{display:flex;flex-direction:column;gap:.4rem;position:sticky;top:0;max-height:calc(100dvh - 12rem);overflow-y:auto;padding:2px}.live-roster button{font:inherit;color:var(--text);text-align:left;cursor:pointer;border:1px solid transparent;border-radius:var(--radius);background:transparent;padding:.85rem}.live-roster button:hover{background:var(--glass-bg);border-color:var(--glass-border)}.live-roster button.is-selected{background:var(--primary-light);border-color:var(--primary)}.live-roster-class{display:flex;justify-content:space-between;gap:.5rem;font-weight:650!important}.live-roster-pupil{display:flex;flex-direction:column;gap:.45rem}.live-roster-identity{display:flex;align-items:center;gap:.5rem;min-width:0}.live-roster-identity strong{font-size:.85rem;overflow-wrap:anywhere}.live-roster-status{display:flex;justify-content:space-between;gap:.5rem;font-size:.7rem;color:var(--text-secondary)}.live-roster-status>span:last-child{flex-shrink:0;font-variant-numeric:tabular-nums}.live-work{min-width:0;padding:1.2rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg)}.live-view-toggle{margin-bottom:1.25rem}.live-section-head{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:1rem;margin-bottom:1rem}.live-section-head>div:first-child{flex:1 1 16rem}.live-section-head h2{margin:0;font-size:1.15rem}.live-section-head p{margin:.4rem 0 0;color:var(--text-secondary);font-size:.82rem;line-height:1.5;max-width:36rem}.live-student-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem}.live-student-card{display:flex;flex-direction:column;gap:.8rem;min-width:0;padding:1.1rem;text-align:left;font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);cursor:pointer;transition:border-color .15s,box-shadow .15s}.live-student-card:hover{border-color:var(--primary);box-shadow:var(--shadow-sm)}.live-student-card.needs-attention{border-left:3px solid var(--warning)}.live-student-card.is-completed{border-left:3px solid var(--success)}.live-student-card:focus-visible,.live-roster button:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.live-card-identity{display:flex;align-items:center;gap:.7rem}.live-card-identity>div{flex:1;min-width:0}.live-card-identity strong{display:block;overflow-wrap:anywhere;font-size:.95rem}.live-avatar{display:grid;place-items:center;width:2.5rem;height:2.5rem;flex-shrink:0;border-radius:.85rem;background:var(--primary-light);color:var(--primary);font-weight:700}.live-card-presence{display:flex;align-items:center;gap:.35rem;color:var(--text-secondary);font-size:.72rem;margin-top:.25rem}.live-card-arrow{color:var(--text-tertiary)}.live-card-progress-label{display:flex;justify-content:space-between;gap:.5rem;color:var(--text-secondary);font-size:.78rem;margin-top:.4rem}.live-card-progress-label strong{color:var(--text);font-variant-numeric:tabular-nums}.live-progress-track{display:block;height:5px;width:100%;background:var(--border);border-radius:10px;overflow:hidden}.live-progress-track>span{display:block;height:100%;background:var(--primary);border-radius:inherit;transition:width .25s}.is-completed .live-progress-track>span{background:var(--success)}.live-card-state{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.35rem;font-size:.77rem}.needs-attention .live-card-state>span:first-child,.live-card-errors{color:var(--error)}.is-completed .live-card-state>span:first-child{color:var(--success)}.live-card-foot{font-size:.73rem;color:var(--text-secondary);border-top:1px solid var(--glass-border);padding-top:.7rem;margin-top:auto}.live-back-overview{margin-bottom:1rem}.live-picker button:disabled{opacity:.45;cursor:not-allowed}.live-start-search{width:100%;margin:.6rem 0}.group-capacity{color:var(--text-secondary);font-variant-numeric:tabular-nums}@media(min-width:1440px){.live-student-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:900px){.live-workspace{grid-template-columns:minmax(0,1fr)}.live-roster{position:static;flex-direction:row;max-height:none;overflow-x:auto;padding-bottom:.4rem}.live-roster button{flex:0 0 170px}.live-roster-class{align-items:center}.live-roster-identity strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}@media(max-width:560px){.live-summary{grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem}.live-summary>div{padding:.8rem}.live-summary strong{font-size:1.35rem}.live-monitor-body{padding:.8rem .7rem 1.5rem}.live-monitor-head{padding:.75rem}.live-work{padding:.85rem}.live-student-cards{grid-template-columns:minmax(0,1fr)}.live-section-head .segmented{display:flex;width:100%}.live-section-head .segmented-btn{flex:1;white-space:normal}}@media(prefers-reduced-motion:reduce){.live-progress-track>span,.live-student-card{transition:none}}.live-badge{display:inline-flex;align-items:center;gap:.4rem;padding:.2rem .65rem;border-radius:var(--radius-full);background:var(--accent-light);border:1px solid var(--accent);color:var(--accent);font-size:.75rem;font-weight:700;letter-spacing:.02em;text-transform:uppercase}.live-badge.is-off{background:var(--bg-subtle);border-color:var(--border);color:var(--text-secondary)}.live-dot{width:8px;height:8px;flex:0 0 auto;border-radius:50%;background:var(--accent);animation:live-pulse 1.8s ease-out infinite}.live-dot-off{background:var(--text-tertiary);animation:none}@keyframes live-pulse{0%{box-shadow:0 0 0 0 var(--accent-glow)}70%{box-shadow:0 0 0 7px transparent}to{box-shadow:0 0 0 0 transparent}}.live-chip{display:inline-flex;align-items:center;gap:.3rem;padding:.2rem .6rem;border-radius:var(--radius-full);background:var(--glass-bg);border:1px solid var(--glass-border);font-size:.78rem;color:var(--text-secondary)}.live-chip strong{color:var(--text);font-variant-numeric:tabular-nums}button.live-chip{cursor:pointer;font-family:inherit}button.live-chip:hover{border-color:var(--primary);color:var(--primary)}button.live-chip:focus-visible{outline:none;box-shadow:0 0 0 3px var(--primary-light)}.live-chip.is-on{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.live-chip.is-on:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff}.live-chip-count{margin-left:.25rem;font-size:.72rem;opacity:.75}.live-picker{display:flex;flex-wrap:wrap;gap:.4rem}.live-start-note{margin:.45rem 0 0;font-size:.8rem;color:var(--text-secondary)}.live-start-hint{margin-right:auto;font-size:.8rem;color:var(--text-secondary)}.live-start-running{display:flex;align-items:center;flex-wrap:wrap;gap:.6rem;margin-bottom:.9rem;padding:.7rem .9rem;border:1px solid var(--accent);border-radius:var(--radius);background:var(--accent-light);font-size:.85rem}.live-start-running span{flex:1 1 12rem}.live-chip.is-urgent{border-color:var(--warning);color:var(--warning)}.live-chip.is-urgent strong{color:var(--warning)}.live-time-left{display:inline-flex;align-items:baseline;gap:.3rem;margin-left:auto;font-size:.85rem;font-variant-numeric:tabular-nums;white-space:nowrap}.live-time-left.is-urgent{color:var(--warning);font-weight:700}.live-time-left-label{font-size:.75rem;color:var(--text-secondary)}.live-time-left.is-urgent .live-time-left-label{color:inherit}.live-warn{color:var(--text-tertiary);font-size:.76rem}.live-pip{width:7px;height:7px;flex:0 0 auto;border-radius:50%;display:inline-block;background:var(--success);box-shadow:0 0 0 2px var(--success-light)}.live-pip.is-off{background:transparent;border:1.5px solid var(--text-tertiary);box-shadow:none}.live-strip{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;margin-bottom:.9rem;padding:.55rem .9rem;border-radius:var(--radius);background:var(--glass-bg);border:1px solid var(--glass-border);color:var(--text-secondary);font-size:.83rem}.live-strip.is-error{background:var(--warning-light);border-color:var(--warning);color:var(--warning);font-weight:600}.live-strip-note{color:var(--text-secondary);font-weight:400}.live-trouble{margin-bottom:.9rem;padding:.7rem .9rem;border-radius:var(--radius);background:var(--error-light);border:1px solid var(--error)}.live-trouble-title{font-size:.8rem;font-weight:700;color:var(--error);margin-bottom:.45rem}.live-trouble-chips{display:flex;flex-wrap:wrap;gap:.35rem}.live-trouble-chip{display:inline-flex;align-items:baseline;gap:.4rem;max-width:22rem;padding:.2rem .6rem;border-radius:var(--radius-full);background:var(--surface-solid);border:1px solid var(--border);font-size:.8rem}.live-trouble-chip strong{color:var(--error);white-space:nowrap}.live-grid-scroll{max-width:100%;overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface-solid)}.live-grid{border-collapse:separate;border-spacing:0;min-width:100%;font-size:.85rem}.live-grid th,.live-grid td{border-bottom:1px solid var(--border-light);padding:.3rem .4rem;vertical-align:middle}.live-grid tbody tr:last-child th,.live-grid tbody tr:last-child td{border-bottom:none}.live-grid thead th{border-bottom:1px solid var(--border);background:var(--bg-subtle);font-size:.72rem;font-weight:700;color:var(--text-secondary);text-align:center;vertical-align:bottom}.live-grid-name{position:sticky;left:0;z-index:1;background:var(--surface-solid);text-align:left;min-width:11rem;border-right:1px solid var(--border)}.live-grid thead .live-grid-name{z-index:2;background:var(--bg-subtle);text-align:left}.live-grid-col{min-width:5.5rem;max-width:10rem}.live-col-label{display:block;max-width:9rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin:0 auto}.live-col-stat{display:block;margin-top:.15rem;font-size:.68rem;font-weight:800;color:var(--error)}.live-grid-col.is-trouble{background:var(--error-light);color:var(--error);box-shadow:inset 1px 0 0 var(--error),inset -1px 0 0 var(--error)}.live-grid-pupil{display:flex;align-items:center;gap:.45rem;width:100%;padding:.25rem .15rem;border:none;background:transparent;color:var(--text);font-size:.85rem;font-family:inherit;text-align:left;cursor:pointer;border-radius:var(--radius-sm)}.live-grid-pupil:hover{color:var(--primary)}.live-grid-pupil:focus-visible{outline:2px solid var(--primary);outline-offset:1px}.live-grid-pupil-name{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}.live-grid-pupil-count{flex:0 0 auto;font-size:.72rem;font-weight:700;color:var(--text-secondary);font-variant-numeric:tabular-nums}.live-cell{text-align:center}.live-cell.in-trouble{background:var(--error-light);box-shadow:inset 1px 0 0 var(--error),inset -1px 0 0 var(--error)}.live-grid tbody tr:hover .live-cell{background:var(--primary-light)}.live-grid tbody tr:hover .live-cell.in-trouble{background:var(--error-light)}.live-grid tbody tr:hover .live-grid-name{background:var(--bg-subtle)}.live-mark{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:800;line-height:1}.live-mark.is-correct{background:var(--success-light);color:var(--success)}.live-mark.is-wrong{background:var(--error-light);color:var(--error)}.live-mark.is-pending{background:var(--info-light);color:var(--info)}.live-mark.is-none{background:transparent;color:var(--text-tertiary)}.live-legend{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem .9rem;margin-top:.7rem;font-size:.78rem;color:var(--text-secondary)}.live-legend-title{font-weight:700}.live-legend-item{display:inline-flex;align-items:center;gap:.35rem}.live-legend-item .live-mark{width:20px;height:20px;font-size:.78rem}.live-pupil-head{display:flex;align-items:flex-start;justify-content:space-between;gap:.75rem;flex-wrap:wrap;margin-bottom:.6rem}.live-pupil-identity{display:flex;align-items:center;gap:.5rem;min-width:0}.live-pupil-name{font-size:1.05rem;overflow-wrap:anywhere}.live-pupil-status{padding:.15rem .55rem;border-radius:var(--radius-full);background:var(--glass-bg);border:1px solid var(--glass-border);font-size:.72rem;font-weight:600;color:var(--text-secondary)}.live-pupil-meta{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;font-size:.78rem;color:var(--text-secondary)}.live-pupil-hint{margin:.5rem 0 0;font-size:.78rem;color:var(--text-tertiary)}.live-answer-list{display:flex;flex-direction:column;gap:.5rem;margin-top:.9rem}.live-answer-row{padding:.6rem .8rem;border-radius:var(--radius);background:var(--glass-bg);border:1px solid var(--glass-border);border-left:3px solid var(--border)}.live-answer-row.is-correct{border-left-color:var(--success)}.live-answer-row.is-wrong{border-left-color:var(--error)}.live-answer-row.is-pending{border-left-color:var(--info)}.live-answer-head{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.live-answer-label{font-weight:700;font-size:.88rem;overflow-wrap:anywhere}.live-answer-type{padding:.1rem .5rem;border-radius:var(--radius-full);background:var(--bg);border:1px solid var(--border);font-size:.7rem;color:var(--text-secondary)}.live-answer-state{margin-left:auto;font-size:.75rem;color:var(--text-secondary)}.live-answer-empty{display:block;margin-top:.35rem;font-size:.83rem;color:var(--text-tertiary)}.live-answer-text{display:block;margin-top:.4rem;font-size:.88rem;white-space:pre-wrap;overflow-wrap:anywhere}.live-answer-audio{display:block;margin-top:.4rem;font-size:.85rem;color:var(--text-secondary)}.live-blanks{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:.4rem}.live-blank{padding:.15rem .55rem;border-radius:var(--radius-full);background:var(--bg);border:1px solid var(--border);font-size:.85rem;overflow-wrap:anywhere}.live-blank.is-empty{color:var(--text-tertiary);font-style:italic}.live-pairs{display:flex;flex-direction:column;gap:.2rem;margin-top:.4rem}.live-pair{display:flex;align-items:baseline;gap:.4rem;flex-wrap:wrap;font-size:.85rem}.live-pair-left{font-weight:600}.live-pair-arrow{color:var(--text-tertiary)}.live-pair-tries{font-size:.72rem;font-weight:700;color:var(--warning)}.live-doc{display:flex;flex-direction:column;gap:.5rem;margin-top:.9rem}.live-doc-page{display:flex;flex-direction:column;gap:.5rem}.live-doc-page+.live-doc-page{margin-top:.9rem}.live-doc-page-title{margin:0;padding-left:.6rem;border-left:4px solid var(--accent);font-size:.95rem}.live-doc-block{padding:.6rem .8rem;border-radius:var(--radius);background:var(--bg);border:1px dashed var(--border)}.live-doc-block.is-unsupported{font-size:.8rem;color:var(--text-secondary)}.live-answer-expected{margin-top:.25rem;font-size:.78rem;color:var(--text-secondary)}.live-doc-sentence{margin-top:.35rem;font-size:.88rem;line-height:1.9;overflow-wrap:anywhere}.live-doc-gap{margin:0 .15rem;letter-spacing:.1em;color:var(--text-tertiary)}.live-notes{margin-top:1.1rem;padding:.85rem;border-radius:var(--radius-lg);background:var(--glass-bg);border:1px solid var(--glass-border)}.live-notes-title{font-size:.85rem;font-weight:700;margin-bottom:.55rem}.live-note-list{display:flex;flex-direction:column;gap:.4rem;margin-bottom:.6rem}.live-note-none{font-size:.8rem;color:var(--text-tertiary)}.live-note-item{display:flex;flex-direction:column;gap:.2rem;padding:.45rem .65rem;border-radius:var(--radius);background:var(--bg);border:1px solid var(--border-light)}.live-note-text{font-size:.86rem;white-space:pre-wrap;overflow-wrap:anywhere}.live-note-meta{display:flex;align-items:center;gap:.6rem;font-size:.72rem;color:var(--text-tertiary)}.live-note-meta.is-seen{color:var(--success)}.live-note-closed{font-size:.8rem;color:var(--text-tertiary)}.live-note-actions{display:flex;align-items:center;justify-content:flex-end;gap:.6rem;margin-top:.45rem}.live-note-hint{font-size:.72rem;color:var(--text-tertiary)}.live-banner{max-width:800px;margin:0 auto 1rem;padding:.5rem .9rem;display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;border-radius:var(--radius);background:var(--accent-light);border:1px solid var(--accent);color:var(--accent);font-size:.82rem;font-weight:600}.live-save{margin-left:auto;font-size:.76rem;font-weight:500;color:var(--text-secondary)}.live-note-in{max-width:800px;margin:0 auto 1rem;padding:.65rem .9rem;display:flex;align-items:flex-start;gap:.6rem;border-radius:var(--radius);background:var(--primary-light);border:1px solid var(--primary);box-shadow:var(--shadow-md);animation:toast-in .28s cubic-bezier(.34,1.56,.64,1)}.live-note-in-text{flex:1 1 auto;font-size:.9rem;white-space:pre-wrap;overflow-wrap:anywhere}.live-note-in-close{flex:0 0 auto;width:26px;height:26px;padding:0;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);font-size:1.1rem;line-height:1;cursor:pointer}.live-note-in-close:hover{background:var(--surface-hover);color:var(--text)}@media(prefers-reduced-motion:reduce){.live-dot,.live-note-in{animation:none}}@media(max-width:640px){.live-monitor-head{padding:.6rem .85rem .55rem;padding-top:max(.6rem,env(safe-area-inset-top))}.live-monitor-head .detail-head-title{font-size:1rem}.live-monitor-body{padding:.85rem .85rem 2rem}.live-grid{font-size:.8rem}.live-grid-name{min-width:8.5rem}.live-grid-col{min-width:4.5rem}.live-mark{width:22px;height:22px;font-size:.8rem}}.parent-report-page{min-height:100vh;background:var(--bg);display:flex;flex-direction:column}.parent-report-center{min-height:100vh;background:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2rem 1rem}.parent-report{flex:1;width:100%;max-width:680px;margin:0 auto;padding:2rem 1.25rem 3rem}.parent-report-head{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;padding-bottom:1.25rem;border-bottom:1px solid var(--border)}.parent-report-head h1{font-size:1.6rem;margin:.15rem 0}.parent-report-kicker{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text-tertiary);font-weight:700}.parent-report-period{color:var(--text-secondary);font-size:.9rem}.parent-report-teacher{text-align:right;font-size:.9rem;color:var(--text-secondary)}.parent-report-note{margin-top:1.25rem;padding:.9rem 1rem;border-radius:var(--radius);background:var(--accent-light);border-left:3px solid var(--accent);white-space:pre-wrap;line-height:1.55}.parent-report-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:.6rem;margin:1.5rem 0}.parent-report-stat{background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius);padding:.85rem .5rem;text-align:center}.parent-report-stat-value{font-size:1.5rem;font-weight:700;line-height:1.1}.parent-report-stat-label{font-size:.72rem;color:var(--text-secondary);margin-top:.2rem}.parent-report-section{margin-top:1.75rem}.parent-report-section h2{font-size:1rem;margin-bottom:.4rem}.parent-report-subject+.parent-report-subject{margin-top:2.25rem}.parent-report-subject-head{display:flex;align-items:baseline;justify-content:space-between;gap:.75rem;flex-wrap:wrap;margin-top:2rem;padding-bottom:.4rem;border-bottom:2px solid var(--glass-border)}.parent-report-subject-head h2{font-size:1.2rem;margin:0}.parent-report-subject-head+.parent-report-section{margin-top:1rem}.parent-report-modal-subjects{list-style:none;margin:.5rem 0 0;padding:0;display:flex;flex-direction:column;gap:.2rem;font-size:.82rem}.parent-report-modal-subjects li{display:flex;justify-content:space-between;gap:.75rem}.parent-report-modal-subjects li span:last-child{color:var(--text-secondary);white-space:nowrap}.parent-report-words{border-radius:var(--radius);padding:.9rem 1rem;margin-bottom:.75rem;border:1px solid var(--border-light)}.parent-report-words-good{background:var(--success-light);border-color:#16a34a33}.parent-report-words-warn{background:var(--warning-light);border-color:#d9770633}.parent-report-words-plain{background:var(--surface)}.parent-report-words ul{list-style:none;margin:.5rem 0 0;padding:0}.parent-report-words li{padding:.15rem 0;font-size:.92rem}.parent-report-count{display:inline-block;min-width:1.4rem;padding:0 .35rem;border-radius:999px;background:var(--surface-solid);font-size:.75rem;text-align:center;vertical-align:middle}.parent-report-hint{font-size:.78rem;color:var(--text-secondary)}.parent-report-footnote{font-size:.82rem;color:var(--text-secondary);margin-top:.25rem}.parent-report-empty{color:var(--text-secondary);font-size:.9rem}.parent-report-row{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;padding:.65rem 0;border-bottom:1px solid var(--border-light)}.parent-report-row-title{font-weight:600;font-size:.95rem}.parent-report-row-meta{font-size:.78rem;color:var(--text-secondary);margin-top:.1rem}.parent-report-row-meta.overdue{color:var(--error);font-weight:600}.parent-report-score{font-weight:700;white-space:nowrap}.parent-report-feedback{margin-top:.35rem;font-size:.85rem;color:var(--text-secondary);white-space:pre-wrap;line-height:1.5}.parent-report-feedback span{font-weight:600;color:var(--text)}.parent-report-privacy{margin-top:2rem;font-size:.75rem;color:var(--text-tertiary);line-height:1.5}.parent-report-print{margin-top:.5rem}@media(max-width:560px){.parent-report{padding:1.25rem 1rem 2rem}.parent-report-stats{grid-template-columns:repeat(2,1fr)}.parent-report-head{flex-direction:column;gap:.5rem}.parent-report-teacher{text-align:left}}@media print{.parent-report-page{background:#fff}.parent-report-print,.site-footer{display:none}.parent-report{max-width:none;padding:0}.parent-report-stat,.parent-report-words{break-inside:avoid}}.duel-arena,.duel-monitor{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;overflow:auto;background:var(--bg)}.duel-arena-inner,.duel-monitor-inner{position:relative;max-width:900px;margin:0 auto;padding:1rem 1.25rem 3rem;padding-top:max(1rem,env(safe-area-inset-top))}.duel-monitor-inner{max-width:1120px}.duel-arena-head{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;margin-bottom:1rem}.duel-arena-title{margin:0;font-size:1.15rem;font-weight:700;flex:1 1 auto}.duel-arena-meta{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.duel-chip{display:inline-flex;align-items:center;gap:.3rem;padding:.2rem .6rem;border-radius:var(--radius-full);border:1px solid var(--border);background:var(--surface);color:var(--text-secondary);font-size:.78rem;font-variant-numeric:tabular-nums}.duel-chip.is-urgent{border-color:var(--warning);color:var(--warning);font-weight:700}.duel-note{margin:1rem 0;padding:.7rem .9rem;border-radius:var(--radius);border:1px solid var(--border-light);background:var(--surface);color:var(--text-secondary);font-size:.88rem;text-align:center}.duel-note.is-error{border-color:var(--error);color:var(--error);background:var(--error-light)}.duel-intro{margin:0 0 1rem;font-size:.88rem;color:var(--text-secondary)}.duel-hint{margin:.35rem 0 0;font-size:.75rem;color:var(--text-tertiary)}.duel-section-title{margin:2rem 0 .75rem;font-size:1rem;font-weight:700}.duel-form-row{display:flex;gap:1rem;flex-wrap:wrap}.duel-form-row>.form-group{flex:1 1 180px}.duel-board{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;margin:1rem 0 1.25rem}.duel-side{padding:.9rem 1rem;border-radius:var(--radius-lg);border:2px solid var(--border);background:var(--glass-bg);transition:border-color var(--transition),transform var(--transition)}.duel-side-a{border-color:color-mix(in srgb,var(--primary) 55%,transparent)}.duel-side-b{border-color:color-mix(in srgb,var(--accent) 55%,transparent)}.duel-side.is-leading{transform:translateY(-2px);box-shadow:var(--shadow-md)}.duel-side.is-mine{outline:2px dashed var(--text-tertiary);outline-offset:3px}.duel-side-head{display:flex;align-items:baseline;justify-content:space-between;gap:.5rem}.duel-side-name{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--text-secondary)}.duel-side-score{font-size:2rem;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;color:var(--text)}.duel-side-a .duel-side-score{color:var(--primary)}.duel-side-b .duel-side-score{color:var(--accent)}.duel-progress{margin:.6rem 0 .5rem;height:8px;border-radius:var(--radius-full);background:var(--bg-subtle);overflow:hidden}.duel-progress-fill{display:block;height:100%;border-radius:var(--radius-full);background:currentColor;transition:width .4s ease}.duel-side-a .duel-progress-fill{background:var(--primary)}.duel-side-b .duel-progress-fill{background:var(--accent)}.duel-players{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.25rem}.duel-player{display:flex;align-items:center;gap:.4rem;font-size:.85rem}.duel-player.is-me .duel-player-name{font-weight:700}.duel-player.is-done .duel-player-name{text-decoration:line-through;opacity:.7}.duel-player.is-empty{color:var(--text-tertiary);font-style:italic}.duel-player-name{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.duel-player-score{font-variant-numeric:tabular-nums;color:var(--text-secondary)}.duel-dot{width:8px;height:8px;flex:0 0 auto;border-radius:50%;background:var(--text-tertiary)}.duel-dot.is-online{background:var(--success)}.duel-question{margin:1.25rem 0;text-align:center}.duel-prompt{margin:0 0 1rem;font-size:clamp(1.75rem,7vw,3rem);font-weight:800;line-height:1.15;overflow-wrap:anywhere}.duel-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.6rem}.duel-option{min-height:56px;padding:.8rem 1rem;border-radius:var(--radius);border:2px solid var(--border);background:var(--surface);color:var(--text);font-size:1rem;font-weight:600;cursor:pointer;transition:border-color var(--transition),background var(--transition),transform var(--transition)}.duel-option:hover:not(:disabled){border-color:var(--accent);background:var(--accent-light)}.duel-option:active:not(:disabled){transform:scale(.98)}.duel-option:disabled{opacity:.6;cursor:default}.duel-typing{display:flex;gap:.5rem;justify-content:center;flex-wrap:wrap}.duel-input{flex:1 1 240px;max-width:420px;padding:.75rem 1rem;border-radius:var(--radius);border:2px solid var(--border);background:var(--surface);color:var(--text);font-size:1.1rem;text-align:center}.duel-input:focus{outline:none;border-color:var(--accent)}.duel-flash{display:flex;align-items:center;justify-content:center;gap:.6rem;margin:1rem 0;padding:.7rem 1rem;border-radius:var(--radius);font-weight:700}.duel-flash.is-correct{background:var(--success-light);color:var(--success)}.duel-flash.is-wrong{background:var(--error-light);color:var(--error)}.duel-flash-points{font-size:1.25rem;font-variant-numeric:tabular-nums}.duel-flash-answer{font-weight:500}.duel-code-panel{display:flex;flex-direction:column;align-items:center;gap:.3rem;padding:1.25rem;text-align:center}.duel-code-label{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary)}.duel-code{font-size:clamp(3rem,14vw,5.5rem);font-weight:800;letter-spacing:.12em;line-height:1;color:var(--accent);font-variant-numeric:tabular-nums}.duel-code-hint{font-size:.8rem;color:var(--text-tertiary)}.duel-roster{list-style:none;margin:0 0 1.25rem;padding:0;display:flex;flex-direction:column;gap:.35rem}.duel-roster-row{display:flex;align-items:center;gap:.6rem;padding:.5rem .75rem;border-radius:var(--radius);border:1px solid var(--border-light);background:var(--surface)}.duel-roster-name{flex:1 1 auto}.duel-roster-side{font-weight:700;color:var(--text-secondary)}.duel-result{margin-top:1.5rem}.duel-result-title{margin:1rem 0;text-align:center;font-size:clamp(1.5rem,6vw,2.25rem);font-weight:800}.duel-result-sub{margin:1.25rem 0 .5rem;font-size:.95rem;font-weight:700}.duel-word-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.3rem}.duel-word{display:flex;justify-content:space-between;gap:1rem;padding:.5rem .75rem;border-radius:var(--radius);border:1px solid var(--border-light);background:var(--surface)}.duel-word.is-correct{border-left:4px solid var(--success)}.duel-word.is-wrong{border-left:4px solid var(--error)}.duel-word-prompt{font-weight:600}.duel-word-answer{color:var(--text-secondary)}.duel-grid-wrap{overflow-x:auto;margin-top:1rem}.duel-grid{width:100%;border-collapse:collapse;font-size:.85rem}.duel-grid th,.duel-grid td{padding:.45rem .6rem;border-bottom:1px solid var(--border-light);text-align:left}.duel-grid thead th{font-size:.75rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-secondary)}.duel-grid tbody th{font-weight:600;display:flex;flex-direction:column;gap:.1rem}.duel-grid tbody th .duel-word-answer{font-size:.78rem;font-weight:400}.duel-grid tr.is-current{background:var(--accent-light)}.duel-grid td.is-correct{color:var(--success);font-weight:700}.duel-grid td.is-wrong{color:var(--error)}.duel-grid td.is-blank{color:var(--text-tertiary)}.duel-entry{display:inline-flex;align-items:center;gap:.4rem;padding:.4rem .9rem;border-radius:var(--radius-full);border:1px solid var(--accent);background:var(--accent-light);color:var(--accent);font-size:.85rem;font-weight:700;cursor:pointer;transition:background var(--transition),color var(--transition)}.duel-entry:hover{background:var(--accent);color:#fff}.duel-entry:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.assignments-header-actions{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}.duel-join{max-width:480px;margin:0 auto}.duel-join-title{margin:0 0 .35rem;font-size:1.35rem;font-weight:700}.duel-join-form{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap;padding:1.25rem}.duel-code-input{flex:1 1 160px;padding:.75rem 1rem;border-radius:var(--radius);border:2px solid var(--border);background:var(--surface);color:var(--text);font-size:1.75rem;font-weight:800;letter-spacing:.25em;text-align:center;text-transform:uppercase}.duel-code-input:focus{outline:none;border-color:var(--accent)}.duel-history{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}.duel-history-row{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;flex-wrap:wrap}.duel-history-main{flex:1 1 220px;display:flex;flex-direction:column;gap:.15rem;min-width:0}.duel-history-meta{font-size:.78rem;color:var(--text-secondary)}.duel-history-score{font-size:1.1rem;font-weight:800;font-variant-numeric:tabular-nums}@media(max-width:560px){.duel-board{grid-template-columns:1fr}.duel-side-score{font-size:1.6rem}}.hard-words{display:flex;flex-direction:column;gap:.35rem}.hard-word-row{display:grid;grid-template-columns:1fr auto 120px;align-items:center;gap:.75rem;padding:.6rem .9rem;border-radius:var(--radius);background:var(--glass-bg);border:1px solid var(--glass-border)}.hard-word-text{display:flex;align-items:baseline;gap:.5rem;min-width:0}.hard-word-text strong{font-size:.95rem}.hard-word-translation{color:var(--text-secondary);font-size:.85rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hard-word-stat{display:inline-flex;align-items:baseline;gap:.45rem;font-size:.85rem;font-variant-numeric:tabular-nums;white-space:nowrap}.hard-word-pct{font-weight:700}.hard-word-bar{height:6px;border-radius:999px;overflow:hidden;background:var(--border)}.hard-word-bar-fill{height:100%;border-radius:999px}.wrong-answers{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:baseline;gap:.3rem;font-size:.8rem}.wrong-answers-label{color:var(--text-secondary)}.wrong-answer-chip{display:inline-flex;align-items:baseline;gap:.3rem;padding:.1rem .5rem;border-radius:999px;background:var(--bg);border:1px solid var(--border);color:var(--error);text-decoration:line-through;text-decoration-thickness:1px}.wrong-answer-count{color:var(--text-secondary);font-weight:700;text-decoration:none;font-variant-numeric:tabular-nums}.block-mistakes{display:flex;flex-direction:column;gap:.45rem;padding:.6rem .9rem;border-radius:var(--radius);background:var(--glass-bg);border:1px solid var(--glass-border)}.block-mistakes-head{font-weight:700;font-size:.85rem;min-width:0}.block-mistake-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:.5rem;font-size:.9rem}@media(max-width:640px){.hard-word-row{grid-template-columns:1fr auto;row-gap:.45rem}.hard-word-bar{grid-column:1 / -1}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.attach-area{display:flex;flex-direction:column;gap:.5rem;margin-top:.9rem;padding:.75rem;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg);text-align:left}.attach-area.is-compact{margin-top:0;padding:0;border:none;background:transparent}.block-comment{margin-top:.5rem;padding:.5rem .65rem;border-radius:var(--radius);background:var(--primary-light);border-left:3px solid var(--primary);text-align:left}.block-comment-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;font-weight:700;font-size:.75rem;color:var(--primary)}.block-comment-text{white-space:pre-wrap;font-size:.85rem;color:var(--text);margin-top:.2rem}.block-comment-add{margin-top:.4rem;font-size:.78rem}.block-comment-edit{margin-top:.5rem;text-align:left}.block-comment-actions{display:flex;gap:.4rem;margin-top:.35rem}.attach-title{font-weight:700;font-size:.82rem;color:var(--text)}.attach-review-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;flex-wrap:wrap}.attach-hint{font-size:.78rem;color:var(--text-secondary)}.attach-error{font-size:.8rem;color:var(--error)}.attach-pick{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}.attach-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.5rem}.attach-tile{position:relative;display:flex;align-items:stretch;min-width:0;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface)}.attach-link{flex:1;min-width:0;display:flex;align-items:center;gap:.6rem;padding:.4rem .5rem;color:inherit;text-decoration:none}a.attach-link:hover .attach-name{text-decoration:underline}a.attach-link:focus-visible{outline:2px solid var(--primary);outline-offset:1px;border-radius:var(--radius-sm)}.attach-thumb{flex:0 0 48px;width:48px;height:48px;border-radius:6px;overflow:hidden;display:flex;align-items:center;justify-content:center;background:var(--bg)}.attach-thumb img{width:100%;height:100%;object-fit:cover;display:block}.attach-icon{font-size:1.4rem}.attach-meta{display:flex;flex-direction:column;min-width:0}.attach-name{font-size:.82rem;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.attach-size{font-size:.72rem;color:var(--text-secondary)}.attach-checked{color:var(--success);font-weight:600}.attach-remove{flex:0 0 auto;align-self:center;margin-right:.3rem;width:28px;height:28px;border-radius:50%;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;font-size:.85rem;line-height:1}.attach-remove:hover:not(:disabled){background:var(--error-light);color:var(--error)}.attach-remove:disabled{opacity:.4;cursor:default}.marking{display:flex;flex-direction:column;gap:.75rem}.marking-toolbar{display:flex;align-items:center;justify-content:space-between;gap:.6rem;flex-wrap:wrap}.marking-summary{margin:0;display:flex;align-items:baseline;flex-wrap:wrap;gap:.35rem;font-size:.9rem;color:var(--text-secondary)}.marking-summary strong{color:var(--text);font-family:var(--font-heading);font-size:1.05rem}.marking-summary-label{color:var(--text-secondary)}.marking-hint{margin:0;padding:.55rem .75rem;border-radius:var(--radius);background:var(--primary-light);border-left:3px solid var(--primary);font-size:.82rem;line-height:1.5;color:var(--text-secondary)}.marking-list{list-style:none;margin:0;padding:0;display:grid;gap:.85rem;grid-template-columns:repeat(auto-fill,minmax(min(100%,420px),1fr))}.marking-card{position:relative;overflow:hidden;min-width:0;display:flex;flex-direction:column;gap:.75rem;padding:1rem 1rem .9rem 1.25rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:box-shadow var(--transition),border-color var(--transition);animation:fadeIn .35s ease both}.marking-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--accent)}.marking-card.is-stale:before{background:var(--warning)}.marking-card:hover{box-shadow:var(--shadow-md);border-color:var(--border)}.marking-card-top{display:flex;align-items:flex-start;gap:.75rem;min-width:0}.marking-avatar{flex:0 0 40px;width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--primary-light);color:var(--primary);font-family:var(--font-heading);font-weight:700;font-size:.85rem;letter-spacing:.02em}.marking-card.is-stale .marking-avatar{background:var(--warning-light);color:var(--warning)}.marking-card-id{min-width:0;flex:1}.marking-headline{margin:0;font-size:.95rem;font-weight:500;line-height:1.4;color:var(--text-secondary);overflow-wrap:anywhere}.marking-name{color:var(--text);font-weight:700}.marking-lesson-link{display:inline;padding:0;border:none;background:none;cursor:pointer;font:inherit;font-weight:600;color:var(--primary);text-align:left;text-decoration:underline;text-decoration-color:transparent;text-underline-offset:3px;transition:text-decoration-color var(--transition);overflow-wrap:anywhere}.marking-lesson-link:hover{text-decoration-color:currentColor}.marking-lesson-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}.marking-meta{margin:.25rem 0 0;display:flex;flex-wrap:wrap;align-items:center;gap:.2rem 0;font-size:.76rem;color:var(--text-tertiary)}.marking-meta>span+span:before{content:"·";margin:0 .4rem;color:var(--text-tertiary)}.marking-meta-warn{color:var(--warning);font-weight:600}.marking-pill{display:inline-flex;align-items:center;gap:.25rem;padding:.1rem .5rem;border-radius:var(--radius-full);font-size:.72rem;font-weight:600;white-space:nowrap}.marking-pill.is-late{background:var(--error-light);color:var(--error)}.marking-pill.is-done{background:var(--success-light);color:var(--success)}.marking-meta>span+.marking-pill:before{content:none}.marking-meta>.marking-pill{margin-left:.5rem}.marking-facts{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.25rem;padding:.6rem .75rem;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border-light)}.marking-fact-label{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-tertiary);margin-right:.4rem}.marking-score{display:flex;align-items:center;gap:.25rem}.marking-score-value{font-family:var(--font-heading);font-weight:700;font-size:1rem;color:var(--text)}.marking-score-value span{color:var(--text-tertiary);font-weight:500}.marking-score-bar{display:inline-flex;width:64px;height:6px;margin-left:.4rem;border-radius:var(--radius-full);overflow:hidden;background:var(--border)}.marking-score-bar .is-ok{background:var(--success)}.marking-score-bar .is-bad{background:var(--error)}.marking-awaits{font-size:.85rem;font-weight:600;color:var(--text)}.marking-chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.35rem}.marking-chip{display:inline-flex;align-items:center;gap:.3rem;max-width:100%;padding:.2rem .6rem;border-radius:var(--radius-full);border:1px solid var(--border);background:var(--bg);font-size:.76rem;color:var(--text-secondary)}.marking-chip.is-skipped{border-style:dashed;color:var(--text-tertiary)}.marking-chip.is-skipped em{font-style:normal;color:var(--warning)}.marking-files{display:flex;flex-direction:column;gap:.4rem}.marking-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.5rem;margin-top:auto;padding-top:.75rem;border-top:1px solid var(--border-light)}.marking-empty{display:flex;flex-direction:column;align-items:center;text-align:center;max-width:460px;margin:1.5rem auto;padding:2.25rem 1.5rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);animation:fadeIn .35s ease both}.marking-empty-icon{width:64px;height:64px;border-radius:50%;margin-bottom:.9rem;display:inline-flex;align-items:center;justify-content:center;background:var(--success-light);color:var(--success);font-size:1.8rem;font-weight:700;box-shadow:0 0 0 8px var(--success-light)}.marking-empty h3{margin:0 0 .3rem;font-family:var(--font-heading);font-size:1.1rem;color:var(--text)}.marking-empty p{margin:0;font-size:.9rem;color:var(--text-secondary)}.marking-empty .marking-empty-hint{margin-top:.6rem;font-size:.8rem;color:var(--text-tertiary);line-height:1.5}@media(max-width:480px){.marking-card{padding:.85rem .85rem .8rem 1.05rem}.marking-avatar{flex-basis:34px;width:34px;height:34px;font-size:.78rem}.marking-actions{flex-direction:column-reverse;align-items:stretch}.marking-actions .btn{width:100%;justify-content:center}.marking-toolbar .segmented{width:100%}.marking-toolbar .segmented-btn{flex:1}}.attach-tag{color:var(--accent);font-weight:600;white-space:nowrap}.block-row-attach{flex-shrink:0;font-size:.85rem}.block-row-points{flex-shrink:0;font-size:.7rem;font-weight:700;white-space:nowrap;padding:.05rem .4rem;border-radius:999px;background:var(--primary-light);color:var(--primary)}.block-points-field{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem .6rem;margin-top:.75rem}.block-points-label{font-weight:600;font-size:.85rem}.block-points-input{width:4.5rem;padding:.35rem .5rem;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit}.block-points-rule{max-width:100%}.block-points-hint{flex-basis:100%;font-size:.78rem;color:var(--text-secondary)}.points-chip{display:inline-flex;align-items:center;white-space:nowrap;padding:.1rem .5rem;border-radius:999px;font-size:.72rem;font-weight:700;background:var(--primary-light);color:var(--primary)}.points-chip.is-full{background:var(--success-light);color:var(--success)}.points-chip.is-part{background:var(--warning-light);color:var(--warning)}.points-chip.is-none{background:var(--error-light);color:var(--error)}.block-points-corner{display:flex;justify-content:flex-end;margin:-.35rem 0 .35rem}.points-grade{display:flex;flex-wrap:wrap;align-items:center;gap:.3rem;margin-top:.35rem}.points-grade-label{display:inline-flex;align-items:center;gap:.35rem;font-size:.78rem;font-weight:600;color:var(--text-secondary);margin-right:.2rem}.points-grade-btn{min-width:2.25rem;justify-content:center}.points-grade-btn[aria-pressed=true]{border-color:var(--primary);background:var(--primary-light);color:var(--primary);font-weight:700}.rubric-editor{flex-basis:100%;display:flex;flex-direction:column;gap:.4rem;margin-top:.25rem}.rubric-editor:has(>.btn:first-child){flex-direction:row;flex-wrap:wrap;align-items:center}.rubric-editor-title{font-weight:600;font-size:.85rem}.rubric-row{display:flex;align-items:center;gap:.4rem}.rubric-row-n{font-size:.8rem;color:var(--text-secondary);width:1.4rem;flex-shrink:0}.rubric-row-label{flex:1;min-width:0;padding:.35rem .5rem;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit}.rubric-row-max{width:3.75rem;flex-shrink:0}.rubric-editor-actions{display:flex;flex-wrap:wrap;gap:.35rem}.rubric-grade{display:flex;flex-direction:column;gap:.45rem;margin-top:.35rem}.rubric-grade-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.25rem .6rem}.rubric-grade-row .points-grade{margin-top:0}.rubric-grade-label{font-size:.8rem;font-weight:600;min-width:0;overflow-wrap:anywhere}.rubric-grade-foot{display:flex;align-items:center;justify-content:space-between;gap:.6rem;flex-wrap:wrap}.rubric-grade-sum{font-weight:700;font-size:.85rem}.rubric-breakdown{list-style:none;margin:0 0 .5rem;padding:0;display:flex;flex-direction:column;gap:.2rem;font-size:.8rem}.rubric-breakdown li{display:flex;justify-content:space-between;gap:.75rem;padding:.2rem .5rem;border-radius:var(--radius);background:var(--bg-subtle)}.rubric-breakdown li span{min-width:0;overflow-wrap:anywhere}.mistake-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}.mistake-row{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap;padding:.65rem .85rem;border-radius:var(--radius);background:var(--glass-bg);border:1px solid var(--glass-border)}.mistake-row-words{display:flex;flex-direction:column;min-width:0}.mistake-row-words strong{overflow-wrap:anywhere}.mistake-row-translation{color:var(--text-secondary);font-size:.85rem;overflow-wrap:anywhere}.mistake-row-tags{display:flex;gap:.35rem;flex-wrap:wrap}.mistake-tag{font-size:.72rem;font-weight:600;padding:.15rem .5rem;border-radius:var(--radius-full);background:var(--error-light);color:var(--error)}.mistake-tag.is-progress{background:var(--success-light);color:var(--success)}.mistake-sections{display:flex;flex-direction:column;gap:1.5rem}.mistake-section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:.75rem;flex-wrap:wrap;margin-bottom:.75rem}.mistake-section-head h3{margin:0 0 .2rem;font-size:1.05rem}.mistake-section-head p{margin:0;color:var(--text-secondary);font-size:.85rem}.mistake-replay-meta{display:flex;justify-content:space-between;gap:.75rem;flex-wrap:wrap;color:var(--text-secondary);font-size:.85rem;margin:1rem 0 .5rem}.mistake-replay-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:1.25rem;min-width:0}.review-picker-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background:#00000080;display:flex;align-items:center;justify-content:center;padding:1rem}.review-picker{width:100%;max-width:640px;max-height:88vh;display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);overflow:hidden}.review-picker-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.85rem 1rem;border-bottom:1px solid var(--border)}.review-picker-head strong{font-size:.95rem}.review-picker-sub{font-size:.78rem;color:var(--text-secondary)}.review-picker-close{width:30px;height:30px;padding:0;border:none;background:transparent;cursor:pointer;color:var(--text-secondary);font-size:1.2rem;line-height:1}.review-picker-status{padding:1rem;font-size:.85rem;color:var(--text-secondary)}.review-picker-status.is-error{color:var(--error)}.review-picker-toolbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem;padding:.75rem 1rem;border-bottom:1px solid var(--border-light)}.review-picker-chips,.review-picker-selects{display:flex;flex-wrap:wrap;gap:.35rem}.review-picker-count{font-variant-numeric:tabular-nums;opacity:.75}.review-picker-list{overflow-y:auto;padding:.25rem 0;flex:1;min-height:0}.review-picker-row{display:flex;align-items:flex-start;gap:.65rem;padding:.55rem 1rem;cursor:pointer;border-bottom:1px solid var(--border-light)}.review-picker-row:hover{background:var(--surface-hover)}.review-picker-row.is-selected{background:var(--primary-light)}.review-picker-row input{margin-top:.2rem;flex-shrink:0}.review-picker-row-body{min-width:0;flex:1}.review-picker-word{display:flex;flex-wrap:wrap;align-items:baseline;gap:.4rem}.review-picker-translation{color:var(--text-secondary)}.review-picker-translation em{color:var(--text-tertiary)}.review-picker-meta{display:flex;flex-wrap:wrap;align-items:baseline;gap:.25rem .75rem;margin-top:.15rem;font-size:.78rem;color:var(--text-secondary)}.review-picker-meta .is-wrong{color:var(--error);font-weight:600}.review-picker-wrote{display:inline-flex;align-items:baseline;gap:.3rem}.review-picker-lessons{margin-top:.1rem;font-size:.72rem;color:var(--text-tertiary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.review-picker-foot{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;padding:.7rem 1rem;border-top:1px solid var(--border)}.review-picker-selected{margin-left:auto;font-size:.8rem;color:var(--text-secondary)}.table-block-scroll{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-solid)}.table-block{border-collapse:separate;border-spacing:0;min-width:100%;color:var(--text);font-size:.95rem;line-height:1.5}.table-block th,.table-block td{padding:.5rem .75rem;text-align:left;vertical-align:top;border-right:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--surface-solid);white-space:pre-wrap;min-width:4rem}.table-block tr>:last-child{border-right:none}.table-block tr:last-child>*{border-bottom:none}.table-block th{font-weight:700;background:var(--primary-light)}.table-block th.is-row-head{position:sticky;left:0;z-index:1;background:linear-gradient(var(--primary-light),var(--primary-light)),var(--surface-solid)}.table-block td.is-gap{vertical-align:middle}.table-block.is-compact th,.table-block.is-compact td{padding:.3rem .5rem;font-size:.8rem}.table-block.is-editing th,.table-block.is-editing td{cursor:pointer;min-height:2.2rem}.table-block.is-editing th:hover,.table-block.is-editing td:hover{background:var(--surface-hover)}.table-block.is-editing .is-selected{outline:2px solid var(--accent);outline-offset:-2px;background:var(--accent-light)}.table-gap-pill{display:inline-block;padding:.05rem .45rem;border-radius:var(--radius-sm);border:1px dashed var(--primary);color:var(--primary);font-weight:600}.table-editor-toolbar{display:flex;flex-wrap:wrap;gap:.5rem 1rem}.table-editor-group{display:flex;flex-wrap:wrap;align-items:center;gap:.25rem}.table-editor-group-label{font-size:.75rem;font-weight:600;color:var(--text-secondary);margin-right:.15rem}.table-editor-panel{padding:.6rem .75rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-subtle)}.table-editor-panel-title{display:flex;align-items:center;gap:.5rem;font-size:.8rem;font-weight:600;margin-bottom:.4rem}.table-editor-gap-tag{font-weight:500;color:var(--primary)}.whiteboard{position:fixed;top:0;right:0;bottom:0;left:0;overscroll-behavior:none;touch-action:none}.whiteboard-paper{position:absolute;top:0;right:0;bottom:0;left:0;background-color:#fff;background-repeat:repeat;pointer-events:none}.whiteboard-paper.is-dark{filter:invert(93%) hue-rotate(180deg)}:root .excalidraw,:root .excalidraw.theme--dark{--ui-font: var(--font);--color-primary: var(--primary);--color-primary-hover: color-mix(in srgb, var(--primary) 85%, black);--color-primary-darker: color-mix(in srgb, var(--primary) 85%, black);--color-primary-darkest: color-mix(in srgb, var(--primary) 70%, black);--color-primary-light: color-mix(in srgb, var(--primary) 16%, white);--color-primary-light-darker: color-mix(in srgb, var(--primary) 28%, white)}:root .excalidraw.theme--dark{--color-primary-hover: color-mix(in srgb, var(--primary) 85%, white);--color-primary-darker: color-mix(in srgb, var(--primary) 85%, white);--color-primary-darkest: color-mix(in srgb, var(--primary) 70%, white);--color-primary-light: color-mix(in srgb, var(--primary) 40%, #121212);--color-primary-light-darker: color-mix(in srgb, var(--primary) 55%, #121212)}:root .excalidraw .ExcTextField__label,:root .excalidraw .ExcTextField__input input,:root .excalidraw .RadioGroup__choice,:root .excalidraw .ImageExportModal h3,:root .excalidraw .ImageExportModal__settings__setting__label,:root .excalidraw .OverwriteConfirm__Description{font-family:var(--font)}.excalidraw input,.excalidraw select,.excalidraw textarea{width:revert;height:revert;padding:revert;border:revert;border-radius:revert;font-family:revert;background:revert;color:revert;transition:revert;accent-color:revert;cursor:revert;flex-shrink:revert}.excalidraw input:focus,.excalidraw select:focus,.excalidraw textarea:focus{outline:revert;border-color:revert;box-shadow:revert}.excalidraw [data-testid=font-family-code],.excalidraw [data-testid=font-family-show-fonts],.excalidraw .FontPicker__container>div[style*="width: 1px"],.excalidraw [data-testid=toolbar-embeddable],.excalidraw .default-sidebar-trigger,.excalidraw .HelpDialog__header{display:none!important}.whiteboard-logo{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:var(--accent)}.whiteboard-back{height:2.25rem;white-space:nowrap;padding:0 .875rem;border:none;border-radius:var(--border-radius-lg, .5rem);background:var(--island-bg-color, var(--surface));box-shadow:var(--shadow-island, 0 1px 4px rgba(0, 0, 0, .15));color:var(--text-primary-color, var(--text));font:inherit;font-size:.875rem;cursor:pointer}.whiteboard-back:hover{color:var(--color-primary)}.excalidraw--mobile .whiteboard-back{padding:0 .75rem}.excalidraw--mobile .whiteboard-back-label{display:none}.geo-tools{position:fixed;right:.75rem;top:50%;transform:translateY(-50%);z-index:4;display:flex;flex-direction:row-reverse;align-items:center;gap:.5rem}.geo-tools-toggle{width:2.75rem;height:2.75rem;border:none;border-radius:var(--border-radius-lg, .5rem);background:var(--island-bg-color, var(--surface-solid));box-shadow:var(--shadow-island, 0 1px 4px rgba(0, 0, 0, .15));font-size:1.3rem;cursor:pointer}.geo-tools.is-open .geo-tools-toggle{box-shadow:0 0 0 2px var(--primary),var(--shadow-island, 0 1px 4px rgba(0, 0, 0, .15))}.geo-tools-panel{width:15rem;max-width:calc(100vw - 5rem);display:flex;flex-direction:column;gap:.35rem;padding:.5rem;border-radius:var(--border-radius-lg, .75rem);background:var(--island-bg-color, var(--surface-solid));box-shadow:var(--shadow-island, 0 1px 4px rgba(0, 0, 0, .15));color:var(--text-primary-color, var(--text))}.geo-tools-btn{display:flex;align-items:center;gap:.5rem;min-height:2.5rem;padding:.3rem .6rem;border:1px solid var(--border);border-radius:var(--radius);background:transparent;color:inherit;font:inherit;font-size:.875rem;text-align:left;cursor:pointer}.geo-tools-btn>span{width:1.25rem;text-align:center;font-weight:700}.geo-tools-btn:hover{border-color:var(--primary)}.geo-tools-btn.is-on{border-color:var(--primary);background:var(--primary-light);color:var(--primary);font-weight:600}.geo-tools-note{margin:.15rem 0 0;font-size:.75rem;line-height:1.35;color:var(--text-secondary)}.whiteboard-top-right{display:flex;align-items:center;gap:.5rem}.whiteboard-title,.whiteboard-status{font-size:.8rem;color:var(--text-primary-color, var(--text));white-space:nowrap}.whiteboard-title{max-width:14rem;overflow:hidden;text-overflow:ellipsis;font-weight:600}.whiteboard-status{opacity:.75}.whiteboard-marking{font-size:.75rem;font-weight:600;white-space:nowrap;padding:.15rem .5rem;border-radius:var(--radius-full);color:#c92a2a;background:#e031311a;border:1px solid rgba(224,49,49,.35)}.excalidraw--mobile .whiteboard-marking{display:none}.whiteboard-status--error,.whiteboard-status--refused{color:var(--error);opacity:1}.whiteboard-live{display:inline-flex;align-items:center;gap:.3rem;font-size:.8rem;white-space:nowrap;color:var(--text-primary-color, var(--text))}.whiteboard-live--live:before{content:"";width:.5rem;height:.5rem;border-radius:50%;background:var(--success)}.whiteboard-live--unavailable{color:var(--warning)}.whiteboard-live--polling:before{content:"";width:.5rem;height:.5rem;border-radius:50%;background:var(--warning)}.whiteboard-live--connecting{display:none}.whiteboard-turn{position:fixed;left:1rem;right:1rem;bottom:1rem;width:fit-content;max-width:calc(100vw - 2rem);margin-inline:auto;z-index:5;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:.5rem;padding:.375rem .375rem .375rem .875rem;border-radius:999px;background:var(--island-bg-color, var(--surface-solid));box-shadow:var(--shadow-island, 0 1px 4px rgba(0, 0, 0, .15));color:var(--text-primary-color, var(--text));font-size:.875rem}.whiteboard-turn .btn{white-space:nowrap}.whiteboard-turn-label{overflow:hidden;text-overflow:ellipsis;min-width:0}.whiteboard-turn--mine{box-shadow:0 0 0 2px var(--accent),var(--shadow-island, 0 1px 4px rgba(0, 0, 0, .15))}.whiteboard-turn--teacher{padding-right:.875rem}@media(max-width:730px){.whiteboard-turn{bottom:calc(4.75rem + env(safe-area-inset-bottom,0px));border-radius:var(--border-radius-lg, .75rem);padding:.375rem .5rem}.whiteboard-turn--both .whiteboard-turn-label,.whiteboard-turn--teacher[role=group] .whiteboard-turn-label,.whiteboard-turn--pupil .whiteboard-turn-label{flex-basis:100%;text-align:center}}.whiteboard .layer-ui__wrapper__top-right .UserList__wrapper{flex:0 0 auto;width:auto;min-width:5rem}.excalidraw--mobile .whiteboard-title{display:none}.whiteboard-top-right-fallback{position:fixed;top:.75rem;right:.75rem;left:.75rem;z-index:5;display:flex;justify-content:flex-end}.whiteboard-top-right-fallback .whiteboard-title{display:none}.excalidraw--mobile .whiteboard-status{max-width:7rem;overflow:hidden;text-overflow:ellipsis}.excalidraw--mobile .whiteboard-live--live{font-size:0;gap:0}.excalidraw--mobile .whiteboard-live--polling,.excalidraw--mobile .whiteboard-live--unavailable{max-width:6rem;overflow:hidden;text-overflow:ellipsis}.whiteboard-loading{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;padding:1rem;text-align:center;background:var(--bg)}.sheet-section{margin-bottom:1.5rem}.sheet-section-head{display:flex;align-items:center;justify-content:space-between;gap:.75rem;margin-bottom:.75rem}.sheet-section-head h3{margin:0}.sheet-section-head{flex-wrap:wrap}.sheet-section-head>.btn{flex:0 0 auto;white-space:nowrap}.sheet-section-head>.sheet-section-hint{flex:1 1 18rem}.sheet-section-hint{color:var(--text-secondary);font-size:.9rem;margin:0}.sheet-section-error{padding:.6rem .9rem;margin-bottom:.75rem;border-radius:var(--radius);background:var(--error-light);color:var(--error);font-size:.9rem}.sheet-group{margin-bottom:1.5rem}.sheet-group-title{font-size:1rem;margin:0 0 .5rem}.sheet-group-note{color:var(--text-secondary);font-size:.85rem;margin:0 0 .5rem}.sheet-list{display:flex;flex-direction:column;gap:.5rem}.sheet-row{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;padding:.35rem .5rem .35rem .35rem;border-radius:var(--radius);background:var(--glass-bg);border:1px solid var(--glass-border)}.sheet-row-open{flex:1 1 14rem;min-width:0;display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;padding:.5rem;border:none;background:none;color:var(--text);font:inherit;text-align:left;cursor:pointer;border-radius:var(--radius)}.sheet-row-open:hover .sheet-row-title{color:var(--primary)}.sheet-row-title{font-weight:600;overflow-wrap:anywhere}.sheet-row-lock,.sheet-row-date{font-size:.8rem;color:var(--text-secondary)}.sheet-row-date{margin-left:auto}.sheet-row-actions{display:flex;gap:.25rem;flex-wrap:wrap}.sheet-title-form{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center;margin-bottom:.5rem}.sheet-title-form input{flex:1 1 12rem;min-width:0}.sheet-link-chip{display:inline-flex;align-items:center;gap:.3rem;max-width:220px;padding:.1rem .5rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:500;background:color-mix(in srgb,var(--book-tint, var(--primary)) 13%,transparent);color:var(--book-tint, var(--primary));border:1px solid color-mix(in srgb,var(--book-tint, var(--primary)) 35%,transparent)}.sheet-link-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sheet-filter{display:block;width:auto;max-width:100%;margin-bottom:.75rem}.sheet-title-form .toolbar-select{flex:1 1 12rem;min-width:0;max-width:100%}.board-preview{position:relative;border:1px solid var(--glass-border, rgba(0,0,0,.1));border-radius:var(--radius);background:#fff;overflow:hidden}.board-preview-svg{padding:.5rem}.board-preview-svg svg{display:block;margin:0 auto;max-width:100%;height:auto;max-height:24rem}.board-preview--empty{display:flex;align-items:center;justify-content:center;min-height:8rem;color:var(--text-secondary);font-size:.9rem;border-style:dashed}.board-preview--paper-lined,.paper-swatch--lined{background-image:linear-gradient(to bottom,#bccbe3 1px,transparent 1px);background-size:100% 32px;background-position:0 6px}.board-preview--paper-squared,.paper-swatch--squared{background-image:linear-gradient(to bottom,#bccbe3 1px,transparent 1px),linear-gradient(to right,#bccbe3 1px,transparent 1px);background-size:20px 20px;background-position:6px 6px}.board-preview--paper-lined,.board-preview--paper-squared{color:#5b6475}.paper-picker{display:flex;flex-wrap:wrap;gap:.5rem}.paper-option{display:flex;flex-direction:column;align-items:center;gap:.3rem;padding:.4rem .5rem .35rem;min-width:5.5rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--glass-bg);color:var(--text);font:inherit;font-size:.82rem;cursor:pointer}.paper-option:hover{border-color:var(--primary)}.paper-option[aria-checked=true]{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary);font-weight:600}.paper-swatch{display:block;width:3.6rem;height:2.6rem;background-color:#fff;border:1px solid rgba(0,0,0,.12);border-radius:3px}.paper-swatch--lined{background-size:100% 9px;background-position:0 4px}.paper-swatch--squared{background-size:7px 7px;background-position:3px 3px}.board-preview-note{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:.85rem}.board-preview:has(.board-preview-note){min-height:8rem}.board-block{display:flex;flex-direction:column;gap:.6rem}.board-block-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem}.board-block-hint{color:var(--text-secondary);font-size:.85rem}.board-block-error{color:var(--error);font-size:.85rem}.board-answer{display:flex;flex-direction:column;align-items:flex-start;gap:.4rem}.board-answer .board-preview{align-self:stretch}.board-answer-empty{color:var(--text-secondary);font-size:.8rem}.sheet-preview{display:flex;flex-direction:column;align-items:flex-start;gap:.4rem;align-self:stretch}.sheet-preview .board-preview{align-self:stretch}.board-corrections{font-size:.8rem}.board-corrections .switch-label{display:inline-flex;align-items:center;gap:.35rem;color:var(--text-secondary)}.board-corrections-swatch{width:.7rem;height:.7rem;border-radius:50%;background:#e03131;flex-shrink:0}.board-block-editor{display:flex;flex-direction:column;gap:.6rem}.board-block-editor-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem}.board-block-editor-hint{color:var(--text-secondary);font-size:.85rem}.board-template-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1100;background:var(--surface-solid)}.board-template-loading{display:flex;align-items:center;justify-content:center}.board-template-done{font-weight:600;color:var(--color-primary, var(--primary))}.drawing-block-open{position:relative;display:block;width:100%;padding:0;border:0;background:none;cursor:zoom-in;text-align:inherit}.drawing-block-zoom-hint{position:absolute;right:.5rem;bottom:.5rem;padding:.15rem .4rem;border-radius:999px;background:#ffffffe6;box-shadow:0 1px 3px #0003;font-size:.85rem;line-height:1.3}.drawing-zoom{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1100;display:flex;flex-direction:column;background:var(--surface-solid)}.drawing-zoom-bar{display:flex;align-items:center;gap:.5rem;padding:.6rem 1rem;border-bottom:1px solid var(--glass-border, rgba(0,0,0,.1))}.drawing-zoom-level{min-width:3.5rem;text-align:center;font-variant-numeric:tabular-nums;color:var(--text-secondary);font-size:.85rem}.drawing-zoom-close{margin-left:auto}.drawing-zoom-stage{flex:1;min-height:0;overflow:auto;padding:.75rem;touch-action:pan-x pan-y pinch-zoom}.drawing-zoom-canvas{min-width:100%;margin:0 auto}.board-preview--zoom .board-preview-svg svg{width:100%;max-width:none;max-height:none}.drawing-zoom-canvas.is-fit .board-preview--zoom .board-preview-svg svg{height:calc(100dvh - 6.5rem)}.question-diagram{margin-bottom:.6rem}.question-diagram .board-preview-svg svg{max-height:18rem}.question-diagram.is-compact{margin:.2rem 0 .35rem;max-width:22rem}.question-diagram.is-compact .board-preview-svg{padding:.25rem}.question-diagram.is-compact .board-preview-svg svg{max-height:9rem}.question-diagram-field{display:flex;flex-direction:column;gap:.4rem}.question-diagram-field-preview .board-preview-svg svg{max-height:10rem}.question-diagram-field .board-block-editor-actions{gap:.4rem}.question-diagram-remove{color:var(--error)}.sheet-filters{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:.75rem}.sheet-filters .sheet-filter{margin-bottom:0}.sheet-group+.sheet-group{margin-top:1.25rem}.sheet-group-head{display:flex;align-items:baseline;gap:.5rem;margin:0 0 .5rem;font-size:1rem}.sheet-group-count{color:var(--text-secondary);font-weight:400;font-size:.85rem}.sheet-copy-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background:#00000080;display:flex;align-items:center;justify-content:center;padding:1rem}.sheet-copy{width:100%;max-width:560px;max-height:88vh;overflow-y:auto;margin:0;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg, 0 10px 40px rgba(0,0,0,.3));background:var(--bg)}.sheet-copy-heading{margin:0 0 .25rem}.sheet-copy .sheet-section-hint{margin-bottom:.9rem;font-size:.85rem}.sheet-copy .toolbar-select{width:100%;max-width:100%}.board-button{position:relative;display:inline-flex}.board-button-chip{padding:.15rem .4rem;font-size:.8rem}.board-button-menu{position:absolute;top:calc(100% + 4px);right:0;z-index:30;display:flex;flex-direction:column;min-width:12rem;max-width:min(18rem,calc(100vw - 32px));padding:.3rem;border-radius:var(--radius);background:var(--bg);border:1px solid var(--border);box-shadow:var(--shadow-lg)}.board-button-menu button{padding:.45rem .6rem;border:none;background:none;color:var(--text);font:inherit;font-size:.9rem;text-align:left;border-radius:var(--radius);cursor:pointer;overflow-wrap:anywhere}.board-button-menu button:hover,.board-button-menu button:focus-visible{background:var(--surface)}.cabinet-head{margin-bottom:1.25rem}.cabinet-head h2{margin-bottom:.15rem}.cabinet-date{color:var(--text-secondary);font-size:.9rem;margin:0}.cabinet-error{color:var(--error)}.cabinet-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem;margin-bottom:1.25rem}.cabinet-stat{display:flex;flex-direction:column;align-items:flex-start;gap:.15rem;padding:.85rem 1rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);font:inherit;color:var(--text);text-align:left}button.cabinet-stat{cursor:pointer;transition:border-color var(--transition),transform var(--transition)}button.cabinet-stat:hover{border-color:var(--primary);transform:translateY(-1px)}.cabinet-stat-value{font-size:1.6rem;font-weight:800;line-height:1.1}.cabinet-stat-label{font-size:.8rem;color:var(--text-secondary)}.cabinet-stat.is-accent .cabinet-stat-value{color:var(--accent)}.cabinet-grid{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:1rem;align-items:start}.cabinet-side{display:flex;flex-direction:column;gap:1rem}.cabinet-panel{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:1rem 1.1rem}.cabinet-panel-title{font-size:1rem;margin:0 0 .15rem}.cabinet-panel-hint{font-size:.78rem;color:var(--text-secondary);margin:0 0 .6rem}.cabinet-empty{font-size:.88rem;color:var(--text-secondary);margin:.4rem 0 0}.cabinet-more{font-size:.8rem;color:var(--text-secondary);margin:.4rem 0 0}.cabinet-list{list-style:none;margin:0;padding:0}.cabinet-list li+li{border-top:1px solid var(--glass-border)}.cabinet-row{width:100%;display:flex;align-items:center;gap:.75rem;padding:.55rem .25rem;background:none;border:none;border-radius:var(--radius);font:inherit;color:inherit;text-align:left;cursor:pointer}.cabinet-row:hover{background:var(--primary-light)}.cabinet-row-main{display:flex;flex-direction:column;min-width:0;flex:1}.cabinet-row-title{font-weight:600;font-size:.92rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cabinet-row-sub{font-size:.78rem;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cabinet-row-go{color:var(--text-secondary)}.cabinet-score{flex-shrink:0;font-size:.8rem;font-weight:700;padding:.15rem .5rem;border-radius:999px;background:var(--warning-light);color:var(--warning)}.cabinet-score.is-full{background:var(--success-light);color:var(--success)}.cabinet-start{text-align:center;padding:2rem 1.25rem}.cabinet-start p{color:var(--text-secondary);max-width:34rem;margin:.4rem auto 1rem}.cabinet-overdue-item{display:flex;align-items:center;gap:.5rem}.cabinet-overdue-item>.cabinet-row{flex:1;min-width:0}.cabinet-overdue-remind{flex-shrink:0}.cabinet-overdue-done{flex-shrink:0;font-size:.78rem;font-weight:600;color:var(--success);white-space:nowrap}.cabinet-overdue-error{font-size:.82rem;margin:.5rem 0 0}.pupil-goal{display:flex;align-items:flex-start;gap:.75rem;padding:.9rem 1.1rem;margin-bottom:1.25rem;border-radius:var(--radius-lg);border:1px solid var(--glass-border);background:var(--glass-bg)}.pupil-goal-empty{align-items:center;flex-wrap:wrap}.pupil-goal-main{display:flex;flex-direction:column;gap:.3rem;min-width:0;flex:1}.pupil-goal-label{font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--text-secondary)}.pupil-goal-hint{font-size:.82rem;color:var(--text-secondary)}.pupil-goal-title{font-weight:700;font-size:1rem;overflow-wrap:anywhere}.pupil-goal-chips{display:flex;flex-wrap:wrap;gap:.35rem}.pupil-goal-chips:empty{display:none}.pupil-goal-when{font-size:.85rem;color:var(--text-secondary)}.pupil-goal-when strong{color:var(--primary)}.pupil-goal-when strong.is-soon{color:var(--accent)}.pupil-goal-when strong.is-passed{color:var(--text-secondary)}.pupil-goal-progress{display:flex;flex-direction:column;gap:.25rem;max-width:28rem}.pupil-goal-progress .progress-bar{display:block;margin:.15rem 0 0}.pupil-goal-progress-text{font-size:.8rem;color:var(--text-secondary)}.pupil-goal-error{color:var(--error);font-size:.85rem;margin:0 0 .75rem}.pupil-goal-form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 1rem}.pupil-goal-card .pupil-goal-main{margin-bottom:.6rem}.cabinet-goal-days{flex-shrink:0;font-size:.8rem;font-weight:700;padding:.15rem .5rem;border-radius:999px;background:var(--primary-light);color:var(--primary);white-space:nowrap}.cabinet-goal-days.is-near{background:var(--warning-light);color:var(--warning)}@media(max-width:560px){.pupil-goal-form-row{grid-template-columns:minmax(0,1fr)}}@media(max-width:760px){.cabinet-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.cabinet-grid{grid-template-columns:minmax(0,1fr)}}.cabinet-tabs{margin-bottom:1rem}.schedule-toolbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem}.schedule-nav,.schedule-toolbar-end{display:flex;align-items:center;gap:.4rem;flex-wrap:wrap}.schedule-range{font-weight:700;min-width:11rem;text-align:center}.schedule-zone{font-size:.78rem;color:var(--text-secondary);margin:.4rem 0 .75rem}.schedule-error{color:var(--error);font-size:.88rem}.schedule-empty-week{color:var(--text-secondary);font-size:.9rem;margin:0 0 .75rem}.schedule-week{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:.5rem;align-items:start}.schedule-day{min-height:9rem;display:flex;flex-direction:column;gap:.4rem;padding:.5rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg)}.schedule-day.is-today{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary) inset}.schedule-day-head{display:flex;align-items:baseline;gap:.35rem}.schedule-day-name{font-weight:700;font-size:.85rem;text-transform:capitalize}.schedule-day-date{font-size:.78rem;color:var(--text-secondary)}.schedule-day-add{margin-left:auto;width:1.6rem;height:1.6rem;border-radius:999px;border:1px dashed var(--glass-border);background:none;color:var(--text-secondary);font:inherit;line-height:1;cursor:pointer}.schedule-day-add:hover,.schedule-day-add:focus-visible{border-color:var(--primary);color:var(--primary)}.schedule-item{display:flex;flex-direction:column;align-items:flex-start;gap:.1rem;width:100%;padding:.45rem .5rem;background:var(--primary-light);border:1px solid transparent;border-left:3px solid var(--primary);border-radius:var(--radius);font:inherit;color:var(--text);text-align:left;cursor:pointer;min-width:0}.schedule-item:hover,.schedule-item:focus-visible{border-color:var(--primary)}.schedule-item-time{font-weight:700;font-size:.82rem;font-variant-numeric:tabular-nums}.schedule-item-who,.schedule-item-title{font-size:.8rem;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.schedule-item-who{font-weight:600}.schedule-item-title{color:var(--text-secondary)}.schedule-item-tags{display:flex;flex-wrap:wrap;gap:.3rem;font-size:.7rem;color:var(--text-secondary)}.schedule-item-tags:empty{display:none}.schedule-item.is-cancelled{background:none;border-left-style:dashed;border-left-color:var(--text-secondary)}.schedule-item.is-cancelled .schedule-item-time,.schedule-item.is-cancelled .schedule-item-who{text-decoration:line-through;color:var(--text-secondary)}.schedule-item.is-overlap{border-left-color:var(--warning);background:var(--warning-light)}.schedule-item.is-removed{opacity:.7}@media(max-width:760px){.schedule-week{grid-template-columns:minmax(0,1fr)}.schedule-day{min-height:0}.schedule-week:not(.is-empty) .schedule-day.is-free:not(.is-today){display:none}.schedule-day-name{font-size:.95rem}}.schedule-modal-scrim{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background:#00000080;display:flex;align-items:center;justify-content:center;padding:1rem}.schedule-modal{width:100%;max-width:520px;max-height:90vh;display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg, 0 10px 40px rgba(0, 0, 0, .3));overflow:hidden}.schedule-modal-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.85rem 1rem;border-bottom:1px solid var(--border)}.schedule-modal-head h3{margin:0;font-size:1.05rem;overflow-wrap:anywhere}.schedule-modal-close{background:none;border:none;font-size:1.4rem;line-height:1;color:var(--text-secondary);cursor:pointer}.schedule-modal-body{padding:1rem;overflow-y:auto;display:flex;flex-direction:column;gap:.7rem}.schedule-modal-foot{display:flex;justify-content:flex-end;gap:.5rem;padding:.75rem 1rem;border-top:1px solid var(--border)}.schedule-field{display:flex;flex-direction:column;gap:.25rem;min-width:0}.schedule-field label{font-size:.82rem;font-weight:600}.schedule-field input,.schedule-cancel-note{width:100%}.schedule-field-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(9.5rem,1fr));gap:.6rem}.schedule-form-about{margin:0;font-weight:600}.schedule-form-about br+*{font-weight:400}.schedule-form-hint{font-size:.78rem;color:var(--text-secondary);margin:0}.schedule-check{display:flex;align-items:center;gap:.45rem;font-size:.9rem;cursor:pointer}.schedule-check input{width:auto;padding:0;margin:0;flex-shrink:0}.schedule-conflicts{padding:.6rem .75rem;border:1px solid var(--warning);border-radius:var(--radius);background:var(--warning-light);font-size:.86rem}.schedule-conflicts ul{margin:.3rem 0 0;padding-left:1.1rem}.schedule-detail-when{margin:0;font-size:1rem}.schedule-detail-line{margin:0;font-weight:600}.schedule-detail-meta{margin:0;font-size:.84rem;color:var(--text-secondary)}.schedule-detail-status{margin:0;font-weight:600;color:var(--error)}.schedule-detail-warn{margin:0;font-size:.86rem;color:var(--warning)}.schedule-detail-note{margin:0;font-size:.88rem;white-space:pre-wrap;border-left:3px solid var(--glass-border);padding-left:.6rem}.schedule-actions{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:.3rem}.lesson-note{display:flex;flex-direction:column;gap:.4rem;padding-top:.6rem;border-top:1px solid var(--glass-border)}.lesson-note textarea{width:100%}.lesson-note-label{font-size:.82rem;font-weight:600}.lesson-note-previous{display:flex;flex-direction:column;gap:.25rem}.lesson-note-previous .lesson-note-label{color:var(--text-secondary);font-weight:500}.lesson-note-foot{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;justify-content:space-between}.lesson-note-status{font-size:.8rem;color:var(--success)}.schedule-cancel{display:flex;flex-direction:column;gap:.55rem}.schedule-cancel fieldset{border:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.35rem}.schedule-cancel legend{font-size:.82rem;font-weight:600;margin-bottom:.25rem}.pupil-schedule h2{margin-bottom:.2rem}.pupil-schedule-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;flex-wrap:wrap}.pupil-schedule-head h2{margin-top:0}.pupil-schedule-day{margin-top:1rem}.pupil-schedule-day h3{font-size:.95rem;margin:0 0 .35rem}.pupil-schedule-day .cabinet-list{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:0 .75rem}.pupil-schedule-item{display:flex;align-items:flex-start;gap:.75rem;padding:.6rem 0}.pupil-schedule-time{font-weight:700;font-variant-numeric:tabular-nums;min-width:6.2rem}.pupil-schedule-note{font-size:.8rem;white-space:pre-wrap;margin-top:.15rem}.pupil-schedule-lesson-note{border-left:3px solid var(--accent);padding-left:.5rem}.action-card p.next-lesson-note{min-height:0;white-space:pre-wrap;border-left:3px solid var(--accent);padding-left:.5rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.pupil-schedule-badge{flex-shrink:0;font-size:.75rem;font-weight:700;padding:.1rem .5rem;border-radius:999px;border:1px dashed var(--error);color:var(--error)}.pupil-schedule-item.is-cancelled .pupil-schedule-time,.pupil-schedule-item.is-cancelled .cabinet-row-title{text-decoration:line-through;color:var(--text-secondary)}.pupil-schedule-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;margin-top:.4rem}.pupil-schedule-empty{margin-top:1rem}.booking-hours{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.45rem}.booking-hours-row{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) auto minmax(0,1fr) auto;align-items:center;gap:.4rem}.booking-hours-row select,.booking-hours-row input{width:100%;min-width:0}.booking-hours-remove{width:1.9rem;height:1.9rem;border-radius:999px;border:1px solid var(--glass-border);background:none;color:var(--text-secondary);font:inherit;line-height:1;cursor:pointer}.booking-hours-remove:hover,.booking-hours-remove:focus-visible{border-color:var(--error);color:var(--error)}.booking-hours-empty{margin:0;font-size:.88rem;color:var(--text-secondary)}.booking-panel{margin-top:.75rem}.booking-panel.is-moving{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary) inset}.booking-stop{margin-bottom:.5rem}.booking-teacher+.booking-teacher{margin-top:.9rem;padding-top:.75rem;border-top:1px solid var(--glass-border)}.booking-teacher-name{margin:0 0 .4rem;font-weight:600;font-size:.9rem}.booking-day{display:grid;grid-template-columns:6.5rem minmax(0,1fr);align-items:start;gap:.5rem;padding:.35rem 0}.booking-day+.booking-day{border-top:1px dashed var(--glass-border)}.booking-day-name{font-weight:700;font-size:.85rem;text-transform:capitalize;padding-top:.3rem}.booking-day-date{font-weight:400;color:var(--text-secondary);text-transform:none}.booking-slots{display:flex;flex-wrap:wrap;gap:.35rem}.booking-slot{padding:.3rem .65rem;border-radius:999px;border:1px solid var(--primary);background:var(--primary-light);color:var(--primary);font:inherit;font-size:.85rem;font-weight:600;font-variant-numeric:tabular-nums;cursor:pointer}.booking-slot:hover,.booking-slot:focus-visible{background:var(--primary);color:#fff}.booking-teacher>.btn{margin-top:.4rem}.booking-next{display:flex;flex-wrap:wrap;align-items:center;gap:.35rem .5rem;margin:.4rem 0 .75rem;font-size:.88rem}.booking-next>span{font-weight:600}.invite-slot{margin:-.75rem 0 1.25rem;padding:.6rem .75rem;border-radius:var(--radius);background:var(--primary-light);color:var(--primary);font-weight:600;font-size:.9rem;text-align:center}@media(max-width:480px){.booking-day{grid-template-columns:minmax(0,1fr);gap:.25rem}.booking-day-name{padding-top:0}.booking-hours-row{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr)}.booking-hours-row select{grid-column:1 / 3;grid-row:1}.booking-hours-row .booking-hours-remove{grid-column:3;grid-row:1;justify-self:end}}.ledger-amount{font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}.ledger-amount.is-owing{color:var(--error)}.ledger-tomark{display:flex;align-items:center;gap:.4rem;padding:.45rem .25rem}.ledger-tomark .btn{flex-shrink:0}.ledger-disclaimer{font-size:.78rem;color:var(--text-secondary);margin:0}.ledger-rules{display:flex;flex-direction:column;gap:.4rem}.ledger-rules input:disabled{opacity:.6}.ledger-price-form,.ledger-payment-form{display:flex;flex-direction:column;gap:.55rem}.ledger-payment-form{padding:.4rem 0}.ledger-back{margin-bottom:.75rem}.ledger-statement-head{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;flex-wrap:wrap;margin-bottom:.75rem}.ledger-statement-head h3{margin:0;overflow-wrap:anywhere}.ledger-balance{display:flex;flex-direction:column;align-items:flex-end;text-align:right}.ledger-balance-value{font-size:1.6rem;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums}.ledger-balance-label{font-size:.8rem;color:var(--text-secondary)}.ledger-balance.is-owing .ledger-balance-value{color:var(--error)}.ledger-statement-grid{margin-top:.75rem}.ledger-entry{display:flex;align-items:center;gap:.4rem .6rem;padding:.5rem .25rem;flex-wrap:wrap}.ledger-entry>.cabinet-row-main{flex:1 1 14rem}.ledger-entry .cabinet-row-title,.ledger-entry .cabinet-row-sub{white-space:normal}.ledger-entry.is-payment .cabinet-row-title{color:var(--success)}.ledger-entry.is-free .cabinet-row-title{color:var(--text-secondary)}.ledger-entry.is-deleted .cabinet-row-title{text-decoration:line-through;color:var(--text-secondary)}.ledger-entry-balance{font-variant-numeric:tabular-nums;font-size:.82rem;color:var(--text-secondary);white-space:nowrap}.ledger-entry-actions{display:flex;gap:.3rem;flex-wrap:wrap}.ledger-entry-actions:empty{display:none}.ledger-deleted{margin-top:.75rem;font-size:.88rem}.ledger-deleted summary{cursor:pointer;color:var(--text-secondary)}.ledger-rates{list-style:none;margin:.6rem 0 0;padding:0;font-size:.86rem}.ledger-rates li{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.2rem 0}.ledger-marks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}.ledger-mark{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.35rem .6rem;align-items:center}.ledger-mark-name{font-weight:600;overflow-wrap:anywhere}.ledger-mark-charged{grid-column:1 / -1;font-size:.84rem}.ledger-all-held{align-self:flex-start}.schedule-item-tomark{color:var(--accent);font-weight:600}@media(max-width:600px){.ledger-mark{grid-template-columns:1fr}.ledger-balance{align-items:flex-start;text-align:left}}.ledger-view{margin-bottom:.9rem}.income{display:flex;flex-direction:column;gap:.9rem}.income-toolbar{display:flex;align-items:center;gap:.6rem .9rem;flex-wrap:wrap}.income-nav{display:flex;align-items:center;gap:.4rem}.income-period{min-width:9.5rem;text-align:center;font-weight:700}.income-csv{margin-left:auto}.income .cabinet-stats{margin:0}.income-received{color:var(--success)}.income-note{margin:0;font-size:.86rem;color:var(--text-secondary)}.income-panel{min-width:0}.income-table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;font-size:.9rem}.income-table th,.income-table td{padding:.35rem .4rem;text-align:right;white-space:nowrap}.income-table th:first-child{text-align:left}.income-table thead th{font-size:.78rem;font-weight:600;color:var(--text-secondary);border-bottom:1px solid var(--border)}.income-table tbody tr+tr{border-top:1px solid var(--border)}.income-table tbody tr.is-empty td{color:var(--text-secondary)}.income-table tfoot th,.income-table tfoot td{font-weight:700;border-top:2px solid var(--border)}.income-month-link{background:none;border:0;padding:0;font:inherit;font-weight:600;color:var(--primary);cursor:pointer}.income-month-link:hover{text-decoration:underline}.income-amounts{display:flex;flex-direction:column;align-items:flex-end;flex-shrink:0}.income-amount-sub{font-size:.78rem;color:var(--text-secondary);font-variant-numeric:tabular-nums;white-space:nowrap}@media(max-width:600px){.income-csv{margin-left:0}.income-table{font-size:.82rem}.income-table th,.income-table td{padding:.3rem .25rem}}.print-page{min-height:100vh;padding:1rem 16px 3rem}.print-toolbar{max-width:210mm;margin:0 auto 1rem;display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}.print-toolbar .segmented{margin-right:auto}.print-status{max-width:210mm;margin:2rem auto;text-align:center;color:var(--text-secondary)}.print-sheet{--text: #111;--text-secondary: #333;--text-tertiary: #555;--border: #222;--glass-border: #888;--glass-bg: #fff;--surface: #fff;--surface-solid: #fff;--surface-hover: #f4f4f4;--primary: #111;--primary-light: #ececec;--mark-bg: #e2e2e2;--input-bg: #fff;color-scheme:light;max-width:210mm;margin:0 auto;padding:14mm;background:#fff;color:#111;font-size:11.5pt;line-height:1.5;box-shadow:0 6px 30px #0000002e;border-radius:4px;overflow-wrap:anywhere}.print-head{margin-bottom:1.4rem}.print-head h1{font-size:1.5rem;margin:0 0 .6rem;line-height:1.25;color:#111}.print-name-row{display:flex;gap:2rem;flex-wrap:wrap;align-items:baseline}.print-key-badge{display:inline-block;padding:.15rem .6rem;border:2px solid #111;font-weight:800;letter-spacing:.06em;text-transform:uppercase;font-size:.85rem}.print-description{margin:.8rem 0 0;white-space:pre-wrap}.print-page-title{margin:1.6rem 0 .8rem}.print-page-title h2{font-size:1.2rem;margin:0;padding-bottom:.25rem;border-bottom:2px solid #111;color:#111}.print-block{display:flex;gap:.6rem;margin:0 0 1.4rem;break-inside:avoid;page-break-inside:avoid}.print-block-num{flex:0 0 auto;min-width:1.7rem;height:1.7rem;display:flex;align-items:center;justify-content:center;border:1.5px solid #111;border-radius:50%;font-weight:700;font-size:.85rem}.print-block-main{flex:1 1 auto;min-width:0}.print-assignment{margin-bottom:.5rem}.print-prose{margin:0;white-space:pre-wrap;line-height:2.1}.print-prose p,.print-prose ul,.print-prose ol{margin:0 0 .4rem;line-height:1.5}.print-block--text .print-prose{white-space:normal;line-height:1.5}.print-note{margin:0 0 .4rem;font-style:italic}.print-hint{margin:0 0 .4rem;font-size:.85rem;font-style:italic;color:#333}.print-url{font-style:normal;font-family:ui-monospace,monospace;font-size:.85em;word-break:break-all}.print-num{font-weight:700;white-space:nowrap}.print-blank{display:inline-block;min-width:7em;border-bottom:1px solid #111;margin:0 .2em;line-height:1.2;vertical-align:baseline}.print-blank.is-long{min-width:16em}.print-blank.is-filled,.print-line.is-filled,.print-sheet td.is-filled,.print-box-letter.is-filled{font-weight:700;font-style:italic}.print-blank.is-filled{min-width:3em;padding:0 .3em;text-align:center}.print-answer-line{margin:.3rem 0 0}.print-key-label{font-weight:700}.print-lines{margin-top:.2rem}.print-line{height:2.1em;border-bottom:1px solid #111;display:flex;align-items:flex-end;padding:0 .2rem .1rem}.print-chips{display:flex;flex-wrap:wrap;gap:.4rem;margin:.2rem 0 .6rem}.print-chip{border:1px solid #111;border-radius:3px;padding:.05rem .5rem}.print-order{list-style:none;margin:.2rem 0 0;padding:0;display:grid;gap:.35rem}.print-order li{display:flex;align-items:center;gap:.6rem;break-inside:avoid}.print-order .print-box-letter{flex-shrink:0}.print-order-img{width:2.2cm;height:2.2cm;object-fit:cover;flex-shrink:0}.print-grid{border-collapse:collapse;width:100%;margin-top:.3rem}.print-grid th,.print-grid td{border:1px solid #111;padding:.35rem .5rem;text-align:left;vertical-align:top}.print-grid th{background:#ececec}.print-grid td{height:2.1em}.print-grid-sub{font-weight:400;font-size:.82rem}.print-word-test th.print-num,.print-word-test td.print-num{width:2.5rem}.print-block--categorize .print-grid,.print-cards{table-layout:fixed}.print-sheet mark{border:1px dashed #555}.print-sheet .rt-blank{display:inline-block;min-width:4em;color:transparent;border-bottom:1px solid #111;line-height:1.1}.print-matching{border-collapse:collapse;width:100%}.print-matching td{padding:.35rem .4rem;vertical-align:middle}.print-matching td.print-num{width:1.6rem}.print-matching-left{width:42%}.print-matching-box{width:3rem}.print-box-letter{display:inline-flex;align-items:center;justify-content:center;width:1.9rem;height:1.9rem;border:1px solid #111}.print-question{margin:.2rem 0 .8rem;break-inside:avoid}.print-question-prompt{display:flex;gap:.4rem;margin-bottom:.25rem}.print-options{list-style:none;margin:0;padding:0 0 0 1.2rem;display:grid;gap:.2rem}.print-options li{display:flex;gap:.45rem;align-items:baseline}.print-options li.is-correct{font-weight:700}.print-mark{font-size:1.15em;width:1.2em}.print-explanation{margin:.25rem 0 0 1.2rem;font-size:.85rem;font-style:italic}.print-sentences{margin:0;padding-left:1.6rem;line-height:2.2}.print-numeric{display:flex;flex-direction:column}.print-numeric-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:.3rem;line-height:2.2}.print-numeric-form{font-size:.85rem;font-style:italic;color:#333}.print-figure{margin:0}.print-figure img{display:block;max-width:100%;max-height:9cm;width:auto;height:auto;margin:0 auto}.print-figure figcaption{margin-top:.3rem;font-size:.85rem;text-align:center;white-space:pre-wrap}.print-hotspot{margin:0 0 .4rem}.print-hotspot .hs-stage img{max-height:9cm;width:auto;border-radius:0}.print-hotspot .hs-rect{border:2px dashed #111;background:transparent}.print-hotspot .hs-rect-n{background:#fff;color:#111;border:1px solid #111}.print-hotspot .hs-pin{background:#fff;color:#111;border:2px solid #111;box-shadow:none}.print-plot{max-width:12cm;margin:0 0 .4rem}.print-plot svg{background:#fff;border:none;border-radius:0}.print-plot .plot-grid line{stroke:#999;stroke-width:.6}.print-plot .plot-axes line{stroke:#111}.print-plot .plot-arrow-head,.print-plot .plot-numbers text{fill:#111}.print-plot .plot-pin circle{fill:#111;stroke:#111}.print-plot .plot-pin text,.print-plot .plot-line text{fill:#111;stroke:#fff}.print-plot .plot-line line{stroke:#111}.print-table .table-block-scroll{overflow:visible;border-color:#111;border-radius:0}.print-table .table-block th.is-row-head{position:static;background:#ececec}.print-table .table-block th,.print-table .table-block td{min-width:0}.print-board .board-preview{border-color:#111;border-radius:0}.print-board .board-preview-svg svg{max-height:12cm}.print-board.is-blank{height:9cm;border:1px solid #111}.print-diagram{margin:.2cm 0 .25cm;max-width:12cm;break-inside:avoid}.print-diagram .board-preview-svg svg{max-height:7cm}.print-paper-space{border:1px solid #111;overflow:hidden}.print-paper-space>svg{display:block}.print-handwriting{height:10.5cm}.print-working{height:7cm;margin-top:.3rem}@media(max-width:640px){.print-sheet{padding:16px}}@media print{html,body,.print-page{background:#fff!important}body:before,.cookie-notice,.print-toolbar{display:none!important}.print-page{padding:0;min-height:0}.print-sheet{max-width:none;margin:0;padding:0;box-shadow:none;border-radius:0}.print-page-title.is-break{break-before:page;page-break-before:always;margin-top:0}.print-grid tr,.print-matching tr{break-inside:avoid}}.math-input{display:inline-flex;flex:1 1 14rem;min-width:0;max-width:100%}.math-input-host{display:contents}.math-input math-field,.math-input-fallback{flex:1;min-width:0;min-height:2.6rem;padding:.35rem .6rem;font-size:1.15rem;border:1px solid var(--glass-border);border-radius:var(--radius);background:var(--input-bg, var(--glass-bg));color:var(--text-primary)}.math-input math-field:focus-within{outline:2px solid var(--accent);outline-offset:1px}.math-input.is-disabled math-field{opacity:.85}.math-q.is-ok .math-input math-field{border-color:var(--success)}.math-q.is-wrong .math-input math-field,.math-q.is-missing .math-input math-field{border-color:var(--error)}.math-edit-accepted .math-input{flex:1}.profile-tabs{margin-bottom:1.25rem}.timeline{display:flex;flex-direction:column;gap:1.1rem}.timeline-day-head{margin:0 0 .35rem;font-size:.78rem;font-weight:700;letter-spacing:.02em;color:var(--text-secondary);text-transform:none}.timeline-list{list-style:none;margin:0;padding:0 0 0 .2rem;border-left:2px solid var(--glass-border);margin-left:.85rem}.timeline-entry{position:relative}.timeline-row{width:100%;display:flex;align-items:flex-start;gap:.7rem;padding:.5rem .5rem .5rem 0;margin-left:-1.1rem;background:none;border:none;border-radius:var(--radius);font:inherit;color:inherit;text-align:left}button.timeline-row{cursor:pointer}button.timeline-row:hover .timeline-title{color:var(--primary);text-decoration:underline;text-underline-offset:2px}button.timeline-row:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.timeline-dot{flex-shrink:0;width:1.75rem;height:1.75rem;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;line-height:1;background:var(--surface, var(--glass-bg));border:2px solid var(--glass-border);color:var(--text-secondary)}.is-attempt .timeline-dot{border-color:var(--success);color:var(--success);background:var(--success-light)}.is-feedback .timeline-dot,.is-comments .timeline-dot{border-color:var(--accent);color:var(--accent)}.is-sheet .timeline-dot,.is-report .timeline-dot{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.timeline-main{display:flex;flex-direction:column;gap:.1rem;min-width:0;flex:1}.timeline-label{font-size:.78rem;color:var(--text-secondary)}.timeline-time{white-space:nowrap}.timeline-title{font-weight:600;font-size:.93rem;overflow-wrap:anywhere}.timeline-detail{font-size:.82rem;color:var(--text-secondary)}.timeline-quote{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;white-space:pre-wrap;font-style:italic;quotes:"«" "»"}.timeline-score{flex-shrink:0;align-self:center;font-size:.78rem;font-weight:700;white-space:nowrap;padding:.15rem .5rem;border-radius:999px;background:var(--glass-bg);color:var(--text-secondary)}.timeline-score.is-good{background:var(--success-light);color:var(--success)}.timeline-score.is-weak{background:var(--warning-light);color:var(--warning)}.timeline-older{align-self:center}.timeline-end{margin:0;text-align:center;font-size:.8rem;color:var(--text-secondary)}.timeline-error{color:var(--error)}@media(max-width:480px){.timeline-row{flex-wrap:wrap}.timeline-score{margin-left:2.45rem}}.book-selection-note{display:flex;align-items:center;justify-content:space-between;gap:.5rem;flex-wrap:wrap;padding:.6rem .85rem;margin-bottom:1rem;border-radius:var(--radius);background:var(--glass-bg);border:1px dashed var(--glass-border);font-size:.88rem}.market-chosen-count{flex-basis:100%;font-size:.75rem;color:var(--text-secondary);text-align:center}.market-preview-added{font-size:.72rem;color:var(--success);white-space:nowrap}.market-preview-lesson input[type=checkbox]{width:1.05rem;height:1.05rem;flex-shrink:0}.text-answer{display:flex;flex-direction:column;gap:.4rem}.text-answer-hand{display:flex;flex-direction:column;gap:.3rem}.text-answer-hand-label{font-size:.75rem;font-weight:600;color:var(--text-secondary)}.math-working{margin-top:.75rem;display:flex;flex-direction:column;gap:.35rem}.math-working-label{font-size:.8rem;font-weight:600;color:var(--text-secondary)}.math-edit-working{display:flex;gap:.5rem;align-items:flex-start;font-size:.88rem;cursor:pointer}.math-edit-working small{display:block;color:var(--text-secondary);font-size:.78rem}.variant-edit{display:flex;flex-direction:column;gap:.5rem}.variant-edit-body{display:flex;flex-direction:column;gap:.5rem;padding-left:1.4rem;border-left:2px solid var(--border)}.variant-edit-hint{color:var(--text-secondary);font-size:.78rem}.variant-edit-params{display:flex;flex-direction:column;gap:.35rem}.variant-edit-param{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;font-size:.85rem;color:var(--text-secondary)}.variant-edit-name{width:2.8rem;min-width:2.8rem;padding-left:0!important;padding-right:0!important;text-align:center;font-weight:700}.variant-edit-num{width:5.5rem}.variant-edit-answer{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.variant-edit-samples{margin:0;padding-left:1.1rem;display:flex;flex-direction:column;gap:.3rem;font-size:.88rem}.variant-edit-samples li>span+span{margin:0 .35rem;color:var(--text-secondary)}.variant-chip{display:inline-block;margin-left:.4rem;padding:.05rem .45rem;border-radius:999px;font-size:.72rem;font-weight:600;color:var(--primary);background:var(--primary-soft)}.variant-note{font-size:.78rem;color:var(--text-secondary)}.variant-note .variant-chip{margin-left:0}.variant-values{font-variant-numeric:tabular-nums}.maths-page{max-width:760px;margin:0 auto}.maths-band{margin-top:1.5rem}.maths-band h3{margin:0 0 .6rem;font-size:1rem;color:var(--text-secondary)}.maths-topics{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.6rem}.maths-topic{display:flex;flex-direction:column;align-items:flex-start;gap:.4rem;text-align:left;padding:.8rem .9rem;border-radius:var(--radius);cursor:pointer;background:var(--glass-bg);border:1px solid var(--glass-border);color:var(--text);font:inherit;transition:border-color .15s,transform .15s}.maths-topic:hover{border-color:var(--primary);transform:translateY(-1px)}.maths-topic.is-mastered{border-color:var(--success)}.maths-topic-name{font-weight:600;line-height:1.3}.maths-topic-meta{font-size:.8rem;color:var(--text-secondary)}.maths-topic.is-mastered .maths-topic-meta{color:var(--success);font-weight:600}.maths-streak{display:inline-flex;gap:.25rem}.maths-streak-dot{width:.6rem;height:.6rem;border-radius:50%;background:var(--border)}.maths-streak-dot.is-on{background:var(--success)}.maths-session-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem}.maths-session-head h2{margin:0}.maths-session-head .maths-streak-dot{width:.85rem;height:.85rem}.maths-session-goal{color:var(--text-secondary);font-size:.88rem;margin:.3rem 0 1rem}.maths-session-card{display:flex;flex-direction:column;gap:.9rem;padding:1.1rem;border-radius:var(--radius);background:var(--glass-bg);border:1px solid var(--glass-border)}.maths-session-actions{display:flex;justify-content:flex-end}.maths-problem-head{display:flex;flex-direction:column;gap:.5rem}.maths-problem-task{font-weight:600}.maths-problem-prompt{font-size:1.35rem;overflow-x:auto}.whiteboard-corrections{white-space:nowrap;flex-shrink:0}.whiteboard-turn--corrections{padding-right:.875rem}.plot-grid line.is-minor{stroke-opacity:.55;stroke-width:.7}.print-plot .plot-grid line.is-minor{stroke:#c4c4c4;stroke-width:.4}.app-icon{display:inline-block;vertical-align:middle;flex-shrink:0}.nav-link-icon{display:inline-flex;align-items:center;justify-content:center}.nav-link-icon .app-icon{width:20px;height:20px}.nav-logout{display:inline-flex;align-items:center;justify-content:center;gap:.45rem}.btn .app-icon,.toolbar-filter-btn .app-icon{margin-right:.25rem}.lesson-cover-neutral{background:var(--primary-light);color:var(--primary)}.dashboard-focus .welcome-section{background:none;color:var(--text);padding:0;text-align:left;box-shadow:none;border-radius:0;margin-bottom:1rem}.dashboard-focus .welcome-section:before,.dashboard-focus .welcome-section:after{content:none}.dashboard-stats{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1.75rem;padding:.85rem 0;margin-bottom:1.25rem;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.dashboard-stats .action-card{flex-direction:row;gap:.45rem;padding:0;background:none;border:0;box-shadow:none;overflow:visible;border-radius:0}.dashboard-stats .action-card:hover{transform:none;box-shadow:none}.dashboard-stats .action-card:after{content:none}.dashboard-stats .action-card-icon{width:auto;height:auto;margin:0;background:none!important}.dashboard-stats .action-card h3{font-size:1.1rem!important;margin:0}.dashboard-stats .action-card p{font-size:.8rem}.dashboard-focus .dashboard-start{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:.6rem 1.5rem;text-align:left;padding:1.5rem;margin-bottom:1.15rem;border-radius:var(--radius-xl);background:var(--welcome-bg);color:var(--welcome-text);border:0}.dashboard-start>:not(.btn){grid-column:1}.dashboard-start .action-card-icon{color:var(--welcome-text);background:none;width:auto;height:auto;margin:0;justify-content:flex-start}.dashboard-start h3{font-size:1.4rem;color:var(--welcome-text);margin:0}.dashboard-start p{color:var(--welcome-text);opacity:.9;min-height:0;margin:0;max-width:34rem}.dashboard-start .card-context-tag{justify-self:start;margin:0;background:var(--welcome-orb);border-color:transparent}.dashboard-start .card-context-tag-label,.dashboard-start .card-context-tag-value{color:var(--welcome-text)}.dashboard-start>.btn{grid-column:2;grid-row:1 / span 4;align-self:center;margin:0!important}.dashboard-focus .action-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.dashboard-focus .action-cards .action-card{display:grid;grid-template-columns:44px minmax(0,1fr);gap:.3rem .85rem;align-content:start;align-items:start;text-align:left}.dashboard-focus .action-cards .action-card>:not(.action-card-icon){grid-column:2;justify-self:start;max-width:100%}.dashboard-focus .action-cards .action-card>.action-card-icon{grid-column:1;grid-row:1 / span 3;margin:0;width:40px;height:40px}.dashboard-focus .action-cards .action-card p{min-height:0}.dashboard-focus .action-cards .action-card .btn{margin-top:.4rem!important}.dashboard-focus .action-card:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.dashboard-focus .recent-lesson-row{flex-wrap:wrap}.workshop-header{background:var(--welcome-bg);color:var(--welcome-text);padding:1.5rem;border-radius:var(--radius-xl);margin-bottom:1.25rem}.workshop-header h2{margin:0;color:inherit}.workshop-header p{margin:.4rem 0 0;color:inherit;opacity:.9;font-size:.85rem}.teacher-workspace .page-tabs{background:var(--surface-solid);border:1px solid var(--border-light);border-radius:var(--radius);padding:.45rem;gap:.3rem;flex-wrap:wrap;box-shadow:var(--shadow-xs);margin-bottom:1.25rem}.teacher-workspace .page-tab{display:inline-flex;align-items:center;gap:.4rem;border-radius:var(--radius-sm);border:0;padding:.6rem .75rem}.teacher-workspace .page-tab[aria-selected=true]{background:var(--accent-light);color:var(--accent)}.teacher-workspace .segmented-btn{display:inline-flex;align-items:center;gap:.35rem}.teacher-workspace .tab-toolbar{gap:.6rem}.teacher-workspace .workshop-display-toggle{margin-left:auto}.teacher-workspace .lesson-card{background:var(--surface);padding:1rem;border-radius:var(--radius-lg);gap:.85rem}.teacher-workspace .lesson-cover-thumb{width:62px;height:62px}.teacher-workspace .lesson-card-info{min-width:0}.teacher-workspace .lesson-card-info button .app-icon{vertical-align:middle}.teacher-workspace .material-display-cards{min-width:0}.teacher-workspace.material-display-cards .lessons-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem}.teacher-workspace.material-display-cards .lesson-card{flex-direction:column;align-items:stretch}.teacher-workspace.material-display-cards .lesson-cover-thumb{width:100%;height:82px}.teacher-workspace.material-display-cards .lesson-cover-thumb .app-icon{width:30px;height:30px}.teacher-workspace.material-display-list .folder-grid{display:flex;flex-direction:column;gap:.55rem}.teacher-workspace.material-display-list .folder-tile{display:flex;flex-direction:row;align-items:center;gap:.85rem;min-height:0;padding:.85rem 1rem;text-align:left}.teacher-workspace.material-display-list .folder-tile-icon-wrap{width:44px;height:38px;margin:0;flex-shrink:0}.teacher-workspace.material-display-list .folder-tile-icon{width:30px;height:30px}.teacher-workspace.material-display-list .folder-tile-count-pill{display:none}.teacher-workspace.material-display-list .folder-tile-name{flex:1;min-width:0;margin:0;overflow-wrap:anywhere}.teacher-workspace.material-display-list .folder-tile-sub{margin:0 1.75rem 0 0}.teacher-workspace .folder-tile-icon .app-icon{width:100%;height:100%}.teacher-workspace .lesson-card:hover{box-shadow:var(--shadow-sm)}.teacher-workspace .toolbar-filter-btn{display:inline-flex;align-items:center;gap:.3rem}@media(max-width:768px){.dashboard-focus .action-cards{grid-template-columns:1fr}.dashboard-focus .dashboard-start{padding:1.25rem;gap:.6rem}.dashboard-start>.btn{grid-column:1;grid-row:auto;justify-self:start;margin-top:.5rem!important}.teacher-workspace .workshop-display-toggle{margin-left:0}.teacher-workspace.material-display-cards .lessons-grid{grid-template-columns:1fr}.teacher-workspace.material-display-list .folder-tile{flex-wrap:wrap}.teacher-workspace.material-display-list .folder-tile-sub{margin-right:1.75rem}.workshop-header{padding:1.25rem}}.lesson-creation{background:var(--bg-subtle)}.lesson-creation .create-panel-head{align-items:flex-start;background:var(--surface-solid)}.creation-steps{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;padding:.75rem 1.25rem;border-bottom:1px solid var(--border)}.creation-steps button{display:inline-flex;align-items:center;gap:.45rem;padding:.5rem .65rem;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);font-size:.82rem;cursor:pointer}.creation-steps button[aria-pressed=true]{background:var(--accent-light);color:var(--accent);font-weight:600}.creation-steps button:disabled{opacity:.45;cursor:default}.creation-steps button>span{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--primary-light);color:var(--primary);font-size:.75rem}.creation-details-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:1rem;align-items:start}.creation-details-layout.is-custom{grid-template-columns:minmax(0,1fr)}.creation-main{min-width:0;display:grid;gap:1rem;align-content:start}.creation-main>div:not(.content-creation-workspace){padding:1rem;background:var(--surface-solid);border:1px solid var(--border-light);border-radius:var(--radius-lg)}.creation-section{padding:1rem;background:var(--surface-solid);border:1px solid var(--border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);min-width:0}.creation-section h4{margin:0 0 1rem;font-size:.95rem}.creation-section>div:last-child{margin-bottom:0!important}.creation-sidebar{display:grid;grid-template-columns:minmax(0,1fr);gap:1rem;min-width:0}.creation-sidebar input,.creation-sidebar select,.workspace-settings input,.workspace-settings select{max-width:100%;min-width:0}.lesson-creation .format-card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.lesson-creation .format-card{text-align:left;min-width:0;padding:1.1rem;background:var(--surface-solid);border-color:var(--border);box-shadow:var(--shadow-xs)}.lesson-creation .format-card:hover{border-color:var(--accent);background:var(--accent-light)}.lesson-creation .format-card-icon{color:var(--primary)}.lesson-creation .create-panel-foot .btn-primary{background:var(--accent);color:#fff}.lesson-creation .create-panel-foot .btn-primary:hover{background:var(--accent-hover)}.lesson-creation input,.lesson-creation select,.lesson-creation textarea{min-width:0}.content-workspace-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.75rem;margin-bottom:1rem}.content-workspace-toolbar h4{margin:0;font-size:.95rem}.content-workspace-toolbar h4 span{font-weight:400;color:var(--text-secondary)}.content-workspace-grid{display:grid;grid-template-columns:minmax(155px,.65fr) minmax(0,2.35fr);gap:1rem;align-items:start}.content-workspace-outline{min-width:0}.content-workspace-outline>h4{margin:0 0 .8rem;font-size:.9rem}.workspace-outline-page{margin-bottom:.8rem}.workspace-page-button{width:100%;display:flex;align-items:center;gap:.4rem;padding:.55rem;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);text-align:left;font:inherit;font-size:.8rem;cursor:pointer}.workspace-page-button.active{background:var(--primary-light);color:var(--primary);font-weight:600}.workspace-block-row.block-row{display:flex;align-items:flex-start;gap:.5rem;padding:.7rem .55rem;background:transparent;border:1px solid transparent;border-radius:var(--radius-sm);margin-top:.25rem;min-width:0}.workspace-block-row.block-row.selected{background:var(--accent-light);color:var(--accent);border-color:var(--accent-light)}.workspace-block-row.block-row.has-error{border-color:var(--error)}.workspace-block-label{display:grid;gap:.25rem;min-width:0}.workspace-block-label strong{font-size:.78rem;font-weight:600;overflow-wrap:anywhere}.workspace-block-label>span{font-size:.72rem;color:var(--text-secondary);overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.workspace-block-picker{display:grid;gap:.55rem;border-top:1px solid var(--border);padding-top:.8rem}.workspace-block-picker p{color:var(--text-secondary);font-size:.75rem;margin:0}.workspace-block-editor,.workspace-block-settings,.creation-lesson-settings{min-width:0;background:var(--surface-solid);border:1px solid var(--border-light);padding:1rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-xs)}.workspace-block-editor{min-height:260px}.workspace-editor-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.65rem;padding-bottom:.85rem;margin-bottom:1rem;border-bottom:1px solid var(--border)}.workspace-editor-head h4{display:inline-flex;align-items:center;gap:.4rem;margin:0;font-size:.9rem}.workspace-editor-actions{display:flex;align-items:center;gap:.3rem}.workspace-icon-button{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;padding:0;border:0;border-radius:var(--radius-sm);background:var(--primary-light);color:var(--primary);cursor:pointer}.workspace-icon-button:disabled{opacity:.35;cursor:default}.workspace-empty-block{padding:1.5rem 0;color:var(--text-secondary);font-size:.85rem;text-align:center}.workspace-page-editor{border-bottom:1px solid var(--border);padding-bottom:1rem;margin-bottom:1rem}.workspace-settings{display:grid;gap:1rem;min-width:0}.workspace-block-settings h4{margin:0 0 .85rem;font-size:.85rem}.workspace-block-settings .block-points-field{flex-wrap:wrap;min-width:0}.workspace-block-settings .block-points-input{max-width:100%}.workspace-block-settings .block-field-hint{font-size:.73rem}.creation-lesson-settings summary{color:var(--primary);cursor:pointer;font-size:.85rem;font-weight:600}.creation-lesson-settings .creation-section{border:0;box-shadow:none;padding:1rem 0 0;background:transparent}.creation-lesson-settings .creation-options{padding-top:.5rem}.content-creation-workspace input,.content-creation-workspace select,.content-creation-workspace textarea{max-width:100%;min-width:0}@media(max-width:1100px){.content-workspace-grid{grid-template-columns:165px minmax(0,1fr)}.workspace-settings{grid-column:1 / -1;grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:900px){.creation-details-layout,.creation-sidebar{grid-template-columns:minmax(0,1fr)}.lesson-creation .format-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.creation-steps{padding:.65rem .75rem;gap:.25rem}.creation-steps button{font-size:.75rem;padding:.4rem}.creation-sidebar,.content-workspace-grid,.workspace-settings{grid-template-columns:minmax(0,1fr)}.workspace-settings{grid-column:auto}.content-workspace-outline{border-bottom:1px solid var(--border);padding-bottom:.8rem}.workspace-outline-rows{display:flex;flex-wrap:wrap;gap:.3rem}.workspace-block-row.block-row{flex:1 1 120px}.workspace-block-picker{grid-template-columns:minmax(0,1fr);align-items:center}.workspace-block-picker p,.workspace-block-picker .btn-ghost{grid-column:1 / -1}.lesson-creation .format-card-grid{grid-template-columns:minmax(0,1fr)}}.creation-identity #create-lesson-title{font-size:1.35rem;font-weight:600;padding:.75rem}.creation-identity label[for=create-lesson-title]{color:var(--primary)}.creation-identity input,.creation-identity textarea{max-width:100%}.workspace-block-picker>.btn{display:flex;align-items:center;justify-content:center;gap:.4rem}.block-type-picker{margin:auto;padding:0;width:min(800px,calc(100vw - 2rem));max-height:min(90dvh,900px);border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface-solid);color:var(--text);box-shadow:var(--shadow-lg);overflow:hidden}.block-type-picker[open]{display:flex;flex-direction:column}.block-type-picker::backdrop{background:#0f172a7a}.block-type-picker-head{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1.1rem 1.25rem;border-bottom:1px solid var(--border);flex-shrink:0}.block-type-picker-head h3{margin:0;font-size:1.2rem}.block-type-picker-head p{margin:.3rem 0 0;font-size:.8rem;color:var(--text-secondary)}.block-type-picker-head .workspace-icon-button{width:38px;height:38px;flex-shrink:0}.block-type-picker-body{padding:1rem 1.25rem;overflow-y:auto;min-height:0}.block-type-group+.block-type-group{margin-top:1.2rem}.block-type-group h4{font-size:.8rem;color:var(--text-secondary);margin:0 0 .65rem}.block-type-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.5rem}.block-type-card{display:flex;align-items:center;gap:.65rem;padding:.8rem .65rem;min-height:65px;text-align:left;font:inherit;font-size:.8rem;font-weight:600;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer}.block-type-card svg{color:var(--primary);flex-shrink:0}.block-type-card span{min-width:0;overflow-wrap:anywhere}.block-type-card:hover{background:var(--primary-light);border-color:var(--primary)}.block-type-picker-foot{display:flex;justify-content:flex-end;padding:.8rem 1.25rem;border-top:1px solid var(--border);flex-shrink:0}@media(max-width:600px){.creation-identity #create-lesson-title{font-size:1.15rem}.block-type-picker{width:calc(100vw - 1rem);max-height:92dvh}.block-type-picker-head,.block-type-picker-body,.block-type-picker-foot{padding:.85rem}.block-type-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.block-type-card{min-height:68px}}.lesson-edit-identity label{font-size:.875rem;font-weight:600}.lesson-edit-identity #edit-lesson-title{font-size:1.35rem;font-weight:600;padding:.75rem}.lesson-edit-identity label[for=edit-lesson-title]{color:var(--primary)}.lesson-edit-settings{padding-top:1rem}.lesson-edit-settings-fields{flex-direction:column}.lesson-edit-settings-fields>div{width:100%}.lesson-edit-actions{z-index:1;margin:0 -1rem -1rem;border-radius:0 0 var(--radius) var(--radius)}@media(max-width:600px){.lesson-edit-identity #edit-lesson-title{font-size:1.15rem}}.workshop-header.is-lesson-open{padding:1rem 1.25rem;margin-bottom:1rem}.workshop-header.is-lesson-open h2{font-size:1.2rem}.workshop-header.is-lesson-open p{margin-top:.25rem;font-size:.8rem}.passport-breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;margin:.5rem 0 1rem;color:var(--text-secondary);font-size:.8rem;overflow-wrap:anywhere}.passport-breadcrumbs .passport-back{padding:0;color:var(--primary)}.passport-crumb{border:0;background:transparent;padding:0;color:var(--primary);font:inherit;cursor:pointer;text-align:left}.passport-breadcrumbs [aria-current=page]{color:var(--text)}.lesson-passport .detail-head{margin-bottom:.75rem}.lesson-passport .detail-head-title{font-size:1.6rem}.lesson-passport .detail-head-meta>span{display:inline-flex;align-items:center;gap:.3rem}.lesson-passport .detail-head-actions{gap:.5rem}.lesson-passport .detail-head-actions>.btn{display:inline-flex;align-items:center;gap:.35rem}.passport-subject{font-size:.8rem;color:var(--text-secondary)}.passport-tabs{display:flex;flex-wrap:wrap;gap:.25rem;border-bottom:1px solid var(--border);margin:.5rem 0 1.25rem}.passport-tabs>button{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;border:0;border-bottom:2px solid transparent;background:transparent;color:var(--text-secondary);padding:.7rem .85rem;font:inherit;font-size:.85rem;cursor:pointer}.passport-tabs>button[aria-selected=true]{border-bottom-color:var(--accent);color:var(--accent);font-weight:600}.passport-tabs>button>span{padding:.1rem .35rem;background:var(--surface);border-radius:var(--radius-full);color:var(--text-secondary);font-size:.7rem}.passport-body{min-width:0}.passport-brief{color:var(--text-secondary);margin:0 0 1rem;white-space:pre-wrap;overflow-wrap:anywhere}.passport-section-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.6rem;margin-bottom:1rem}.passport-section-head h4{margin:0}.passport-section-head>span{color:var(--text-secondary);font-size:.8rem}.passport-section-head>.btn{display:inline-flex;align-items:center;gap:.35rem}.lesson-material-view{padding:1.25rem;border:1px solid var(--border-light);background:var(--surface-solid);border-radius:var(--radius-lg)}.passport-material-blocks{display:grid;gap:1rem}.passport-material-block{padding:1rem;border:1px solid var(--border-light);background:var(--bg);border-radius:var(--radius);min-width:0;overflow-wrap:anywhere}.passport-block-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;margin-bottom:.6rem}.passport-block-head>span{display:inline-flex;align-items:center;gap:.4rem;color:var(--text-secondary);font-size:.75rem}.passport-block-head>.btn{padding:.25rem .4rem}.passport-page-actions{display:flex;justify-content:space-between;gap:.5rem;margin-top:1rem}.passport-material-hint{color:var(--text-secondary);font-size:.8rem;margin:1rem 0 0}.passport-material-layout .content-toc{box-shadow:none}.passport-practice-menu{position:relative}.passport-practice-menu summary{display:inline-flex;align-items:center;gap:.35rem;list-style:none;cursor:pointer}.passport-practice-menu summary::-webkit-details-marker{display:none}.passport-practice-menu[open]>div{position:absolute;top:calc(100% + .5rem);right:0;min-width:180px;padding:.5rem;background:var(--surface-solid);border:1px solid var(--border);border-radius:var(--radius);z-index:10;box-shadow:var(--shadow-md);display:grid;gap:.3rem}.passport-practice-menu[open]>div>button{justify-content:flex-start}.passport-word-import{margin-top:1.25rem;padding:1rem;border:1px solid var(--border);background:var(--surface-solid);border-radius:var(--radius)}.passport-word-import>summary{display:flex;align-items:center;gap:.4rem;color:var(--primary);font-weight:600;cursor:pointer}.passport-word-import[open]>summary{margin-bottom:1rem}.passport-assignment{padding:1.25rem;border:1px solid var(--border-light);border-radius:var(--radius-lg);background:var(--surface-solid);margin-bottom:1.25rem}.lesson-passport .lesson-edit-panel{margin-top:0!important}.passport-body>.lesson-edit-panel>h4{font-size:.95rem}.teacher-workspace .tab-toolbar .toolbar-search{flex:1 1 200px;min-width:0}@media(max-width:700px){.lesson-passport .detail-head-title{font-size:1.35rem}.passport-tabs>button{flex:1 1 auto;padding:.7rem .45rem;font-size:.8rem}.lesson-material-view,.passport-assignment,.passport-material-block{padding:.85rem}.passport-practice-menu{position:static}.lesson-passport .detail-head-actions{position:relative}.passport-practice-menu[open]>div{right:0;left:0;min-width:0}}.passport-catalog-view{position:relative}.passport-catalog-view summary{list-style:none;cursor:pointer}.passport-catalog-view summary::-webkit-details-marker{display:none}.passport-catalog-view-options{position:absolute;z-index:12;right:0;top:calc(100% + .5rem);width:245px;display:grid;gap:.75rem;padding:.9rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);box-shadow:var(--shadow-md)}.passport-catalog-view-options .toolbar-select,.passport-catalog-view-options .segmented{width:100%}@media(max-width:600px){.passport-catalog-view{position:static}.teacher-workspace .tab-toolbar{position:relative}.passport-catalog-view-options{left:0;right:0;width:auto}}.passport-student-row{flex-wrap:wrap;gap:.6rem}.passport-student-row>span{min-width:0;overflow-wrap:anywhere}.passport-student-row>div{flex-wrap:wrap}.tprofile-page{min-height:100vh;background:var(--bg);display:flex;flex-direction:column}.tprofile-main{flex:1;width:100%;max-width:720px;margin:0 auto;padding:2rem 1rem 3rem}.tprofile{min-width:0}.tprofile-head{display:flex;align-items:center;gap:1rem;padding-bottom:1.25rem;border-bottom:1px solid var(--border)}.tprofile-avatar{flex-shrink:0;width:72px;height:72px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--primary);color:#fff;font-size:1.6rem;font-weight:700;letter-spacing:.02em;box-shadow:inset 0 -4px 0 var(--accent)}img.tprofile-photo{object-fit:cover;background:var(--primary);box-shadow:0 0 0 1px var(--border)}.tprofile-id{min-width:0}.tprofile-kicker{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text-tertiary);font-weight:700}.tprofile-name{font-size:1.7rem;line-height:1.15;margin:.15rem 0 .25rem;overflow-wrap:anywhere}.tprofile-headline{margin:0;color:var(--text-secondary);font-size:1rem;overflow-wrap:anywhere}.tprofile-cta{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.75rem 1rem;margin-top:1.25rem;padding:1rem 1.1rem;border-radius:var(--radius-lg);border:1px solid var(--glass-border);background:var(--glass-bg)}.tprofile-price{display:flex;flex-direction:column}.tprofile-price-amount{font-size:1.3rem;font-weight:700}.tprofile-price-unit{font-size:.82rem;color:var(--text-secondary)}.tprofile-price+.tprofile-join{margin-left:auto}.tprofile-full{margin:0;font-size:.9rem;font-weight:600;color:var(--text-secondary)}.tprofile-price+.tprofile-full{margin-left:auto}.tprofile-section{margin-top:1.75rem}.tprofile-section h2{font-size:1.05rem;margin:0 0 .6rem}.tprofile-chips{display:flex;flex-wrap:wrap;gap:.4rem}.tprofile-about{white-space:pre-wrap;line-height:1.6;overflow-wrap:anywhere}.tprofile-entries{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.75rem}.tprofile-entry{padding-left:.85rem;border-left:3px solid var(--accent)}.tprofile-entry-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:.2rem .6rem}.tprofile-entry-title{font-weight:600;overflow-wrap:anywhere}.tprofile-entry-period{font-size:.85rem;color:var(--text-secondary);white-space:nowrap}.tprofile-entry-details{margin:.2rem 0 0;font-size:.9rem;color:var(--text-secondary);white-space:pre-wrap;overflow-wrap:anywhere}.tprofile-booking-note{margin:0 0 .5rem;font-size:.88rem;color:var(--text-secondary);overflow-wrap:anywhere}.tprofile-booking .tprofile-hint{margin-top:.6rem}.tprofile-booking-more{margin-top:.4rem}.tprofile-booking-setup{display:flex;flex-direction:column;align-items:flex-start;gap:.4rem}.tprofile-price+.tprofile-trial-cta{margin-left:auto}.tprofile-trial{scroll-margin-top:1rem}.tprofile-trial-form{padding:1rem 1.1rem;border-radius:var(--radius-lg);border:1px solid var(--glass-border);background:var(--glass-bg)}.tprofile-trial-form .form-group{margin-bottom:.85rem}.tprofile-trial-form textarea{width:100%}.tprofile-trial-kinds{margin:.3rem 0 .45rem}.tprofile-trial-consent{margin:.25rem 0 .85rem;font-size:.85rem}.tprofile-consent .auth-consent-row{flex-direction:row}.tprofile-consent .auth-consent-row input[type=checkbox]{width:auto}.tprofile-consent-categories{border:0;margin:0;padding:0;display:flex;flex-direction:column;gap:.35rem;min-width:0}.tprofile-consent-categories legend{font-size:.85rem;font-weight:600;margin-bottom:.35rem;padding:0}.tprofile-consent-text{max-height:14rem;overflow:auto;padding:.75rem .9rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-subtle);font-size:.78rem;line-height:1.55;color:var(--text-secondary);overflow-wrap:anywhere}.tprofile-consent-text h4{margin:0 0 .5rem;font-size:.85rem;color:var(--text)}.tprofile-consent-text h5{margin:.6rem 0 .25rem;font-size:.8rem;color:var(--text)}.tprofile-consent-text p{margin:0 0 .4rem;white-space:pre-wrap}.tprofile-consent-text ul{margin:0 0 .4rem;padding-left:1.1rem}.tprofile-consent-note{margin-top:2rem;padding-top:.75rem;border-top:1px solid var(--border);font-size:.75rem;line-height:1.5;color:var(--text-secondary)}.tprofile-consent-note p{margin:0 0 .3rem}.tprofile-consent-restrictions{white-space:pre-wrap;overflow-wrap:anywhere}.tprofile-trial-form .tprofile-error{margin-bottom:.6rem}.tprofile-trial-submit{margin-right:.6rem}.tprofile-trial-hp{position:absolute;left:-10000px;top:auto;width:1px;height:1px;overflow:hidden}.tprofile-trial-sent{margin:0;padding:1rem 1.1rem;border-radius:var(--radius-lg);border:1px solid var(--glass-border);background:var(--glass-bg);font-weight:600;overflow-wrap:anywhere}@media(max-width:480px){.tprofile-main{padding:1.25rem 1rem 2.5rem}.tprofile-avatar{width:56px;height:56px;font-size:1.25rem}.tprofile-name{font-size:1.4rem}.tprofile-join,.tprofile-trial-cta{width:100%}.tprofile-price+.tprofile-join,.tprofile-price+.tprofile-full,.tprofile-price+.tprofile-trial-cta{margin-left:0}.tprofile-trial-submit{width:100%;margin:0 0 .4rem}}.tprofile-video{position:relative;width:100%;padding-top:56.25%;border-radius:var(--radius);overflow:hidden;border:1px solid var(--glass-border);background:var(--bg-subtle)}.tprofile-video iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:none}.tprofile-lessons{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.75rem}.tprofile-lesson{display:flex;flex-direction:column;min-width:0;overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--glass-border);background:var(--glass-bg)}.tprofile-lesson .lesson-cover-banner{border-radius:0}.tprofile-lesson-body{display:flex;flex-direction:column;align-items:flex-start;gap:.35rem;padding:.75rem .85rem .85rem;flex:1}.tprofile-lesson-title{font-size:.98rem;margin:0;line-height:1.3;overflow-wrap:anywhere}.tprofile-lesson-desc{margin:0;font-size:.85rem;color:var(--text-secondary);white-space:pre-wrap;overflow-wrap:anywhere;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.tprofile-lesson-meta{margin:0;font-size:.82rem;color:var(--text-secondary)}.tprofile-lesson-open{margin-top:auto}.tprofile-pinned{list-style:none;margin:0 0 .6rem;padding:0;display:flex;flex-direction:column;gap:.35rem}.tprofile-pinned-item{display:flex;align-items:center;gap:.5rem;padding:.35rem .5rem;border-radius:var(--radius);border:1px solid var(--border-light)}.tprofile-pinned-title{flex:1;min-width:0;font-size:.9rem;overflow-wrap:anywhere}.tprofile-lesson-pick{max-width:100%}.tlesson-banner{display:flex;flex-direction:column;gap:.2rem;margin-bottom:1rem;padding:.75rem 1rem;border-radius:var(--radius-lg);border:1px solid var(--border-light);background:var(--primary-light);font-size:.9rem;overflow-wrap:anywhere}.tlesson-banner span{color:var(--text-secondary)}.tlesson-description{margin:0 0 1rem;white-space:pre-wrap;overflow-wrap:anywhere;color:var(--text-secondary)}.tlesson-blocks{display:flex;flex-direction:column;gap:1rem}.tlesson-block{position:relative;padding:1.25rem;border-radius:var(--radius-lg);background:var(--glass-bg);border:1px solid var(--glass-border);box-shadow:var(--shadow-md);min-width:0}.tlesson-unsupported{margin:0;font-size:.85rem;color:var(--text-secondary)}.tlesson-pager{margin-top:1.5rem;display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap}.tlesson-pager>span{flex:1 1 auto;text-align:center;font-size:.85rem;color:var(--text-secondary)}.tlesson-end{margin-top:1.5rem;display:flex;justify-content:center}@media(max-width:480px){.tlesson-block{padding:1rem .85rem}.tlesson-end .btn{width:100%}}.trial-requests-empty{display:flex;flex-direction:column;align-items:flex-start;gap:.6rem;max-width:46rem}.trial-requests-empty p{margin:0}.trial-requests-view{margin-bottom:.85rem}.trial-requests-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.75rem;max-width:46rem}.trial-request{display:flex;flex-direction:column;gap:.35rem;scroll-margin-top:5rem}.trial-request.is-highlight{border-color:var(--accent);box-shadow:0 0 0 2px color-mix(in srgb,var(--accent) 35%,transparent)}.trial-request-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:.2rem .75rem}.trial-request-name{font-weight:700;overflow-wrap:anywhere}.trial-request-when{font-size:.82rem;color:var(--text-secondary);white-space:nowrap}.trial-request-contact{align-self:flex-start;font-weight:600;overflow-wrap:anywhere}.trial-request-kind{font-weight:400;color:var(--text-secondary)}.trial-request-message{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font-size:.92rem}.trial-request-note{margin:0;font-size:.82rem;color:var(--text-secondary)}.trial-request-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.25rem}.trial-request-delete{margin-left:auto}.tprofile-intro{color:var(--text-secondary);font-size:.9rem;max-width:46rem;margin:0 0 1rem}.tprofile-pane-toggle{display:none}.tprofile-editor-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1rem;align-items:start}.tprofile-editor-form{display:flex;flex-direction:column;gap:1rem;min-width:0}.tprofile-editor-form .create-panel{margin-bottom:0}.tprofile-editor-preview{position:sticky;top:1rem;min-width:0}.tprofile-preview-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;color:var(--text-tertiary);margin-bottom:.4rem}.tprofile-preview-frame{max-height:calc(100vh - 4rem);overflow:auto;padding:1.25rem;border-radius:var(--radius-lg);border:1px dashed var(--border);background:var(--bg)}.tprofile-preview-frame .tprofile-name{font-size:1.45rem}.tprofile-status{display:flex;flex-direction:column;gap:.5rem}.tprofile-status p{margin:0}.tprofile-status-line{font-weight:600}.tprofile-status-line.is-live{color:var(--success)}.tprofile-status-blocked{color:var(--error);font-weight:600}.tprofile-status-note{font-size:.85rem;color:var(--warning)}.tprofile-status-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}.tprofile-url{font-size:.88rem;overflow-wrap:anywhere}.tprofile-slug{display:flex;align-items:center;gap:.25rem}.tprofile-slug-prefix{color:var(--text-secondary);font-size:.85rem;white-space:nowrap}.tprofile-slug input{flex:1;min-width:0}.tprofile-hint{font-size:.78rem;color:var(--text-secondary);margin:.3rem 0 0}.tprofile-warn{font-size:.82rem;color:var(--warning);margin:.35rem 0 0}.tprofile-error{color:var(--error);font-size:.85rem;margin:0;width:100%}.tprofile-foot-note{font-size:.8rem;color:var(--text-secondary)}.tprofile-edit-section{margin-top:1.25rem;padding-top:1rem;border-top:1px solid var(--border-light)}.tprofile-edit-section-head{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap;margin-bottom:.6rem}.tprofile-edit-section-head h3{font-size:.95rem;margin:0}.tprofile-edit-section.is-off .tprofile-edit-section-body{opacity:.55}.tprofile-group-label{display:block;font-size:.8rem;font-weight:600;margin-bottom:.3rem}.tprofile-photo-field{display:flex;align-items:center;gap:.9rem;flex-wrap:wrap}.tprofile-photo-field .tprofile-avatar{width:56px;height:56px;font-size:1.2rem}.tprofile-photo-actions{display:flex;flex-wrap:wrap;gap:.4rem}.photo-crop-stage{position:relative;align-self:center;overflow:hidden;border-radius:var(--radius);background:#1b1b1f;touch-action:none;cursor:grab;-webkit-user-select:none;user-select:none}.photo-crop-stage:active{cursor:grabbing}.photo-crop-stage:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.photo-crop-stage img{position:absolute;left:0;top:0;max-width:none;pointer-events:none;-webkit-user-drag:none}.photo-crop-stage:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;box-shadow:0 0 0 9999px #00000080;outline:2px solid rgba(255,255,255,.85);pointer-events:none}.photo-crop-zoom{display:flex;align-items:center;gap:.6rem;font-size:.85rem}.photo-crop-zoom input[type=range]{flex:1;min-width:0}.tprofile-chip-group{margin-bottom:.75rem}.tprofile-grades{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem .5rem;margin-bottom:.75rem;font-size:.82rem}.tprofile-grades .tprofile-group-label{width:100%;margin-bottom:0}.tprofile-grades select{width:auto}.tprofile-price-fields{display:flex;flex-wrap:wrap;gap:.75rem}.tprofile-price-fields label{display:flex;flex-direction:column;gap:.25rem;font-size:.82rem;font-weight:600}.tprofile-price-fields input{width:9rem}.tprofile-edit-entries{display:flex;flex-direction:column;gap:.75rem;align-items:flex-start}.tprofile-edit-entry{width:100%;display:flex;flex-direction:column;gap:.4rem}.tprofile-edit-entry-row{display:flex;gap:.4rem;align-items:center}.tprofile-edit-entry-row input:first-child{flex:1;min-width:0}.tprofile-edit-period{width:8rem;flex-shrink:0}@media(max-width:900px){.tprofile-editor-grid{grid-template-columns:minmax(0,1fr)}.tprofile-pane-toggle{display:inline-flex;margin-bottom:.75rem}.tprofile-editor[data-pane=edit] .tprofile-editor-preview,.tprofile-editor[data-pane=preview] .tprofile-editor-form{display:none}.tprofile-editor-preview{position:static}.tprofile-preview-frame{max-height:none}}@media(max-width:480px){.tprofile-edit-entry-row{flex-wrap:wrap}.tprofile-edit-entry-row input:first-child{flex-basis:100%}.tprofile-edit-period{flex:1;width:auto}.tprofile-preview-frame{padding:1rem .75rem}}.tprofile-stats{padding:1rem 1.1rem .9rem;border-radius:var(--radius-lg);border:1px solid var(--border-light);background:var(--primary-light)}.tprofile-stats h2{display:flex;align-items:center;gap:.45rem}.tprofile-stats h2:before{content:"";flex-shrink:0;width:.55rem;height:.55rem;border-radius:50%;background:var(--accent)}.tprofile-stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:.5rem;margin:0}.tprofile-stat{min-width:0;padding:.6rem .75rem;border-radius:var(--radius-sm);border:1px solid var(--border-light);background:var(--surface-solid)}.tprofile-stat dt{font-size:.76rem;line-height:1.3;color:var(--text-secondary);overflow-wrap:anywhere}.tprofile-stat dd{margin:.2rem 0 0;display:flex;flex-direction:column}.tprofile-stat-value{font-size:1.35rem;line-height:1.2;font-weight:700;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.tprofile-stat-window{font-size:.72rem;color:var(--text-tertiary)}.tprofile-badges{list-style:none;margin:.75rem 0 0;padding:0;display:flex;flex-direction:column;gap:.55rem}.tprofile-badge{display:flex;align-items:flex-start;gap:.6rem}.tprofile-badge-mark{flex-shrink:0;width:1.6rem;height:1.6rem;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--success);color:var(--surface-solid);font-size:.85rem;font-weight:700}.tprofile-badge-mark.is-small{width:1.1rem;height:1.1rem;font-size:.65rem;margin-right:.35rem;vertical-align:-.15rem}.tprofile-badge-text{display:flex;flex-direction:column;min-width:0}.tprofile-badge-title{font-weight:600;overflow-wrap:anywhere}.tprofile-badge-rule{font-size:.85rem;color:var(--text-secondary)}.tprofile-stats-note{margin:.75rem 0 0;font-size:.75rem;color:var(--text-tertiary)}.tprofile-stats-editor .tprofile-group-label{margin-top:.9rem}.tprofile-stat-rows{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}.tprofile-stat-row{display:flex;align-items:flex-start;justify-content:space-between;gap:.75rem;padding:.55rem 0;border-bottom:1px solid var(--border-light)}.tprofile-stat-row:last-child{border-bottom:none}.tprofile-stat-row-main{display:flex;flex-direction:column;gap:.15rem;min-width:0}.tprofile-stat-row-label{font-size:.88rem;font-weight:600;overflow-wrap:anywhere}.tprofile-stat-row-value{font-size:1.05rem;font-weight:700;font-variant-numeric:tabular-nums}.tprofile-stat-row-note{font-size:.78rem;color:var(--text-secondary)}.tprofile-stat-row-status{font-size:.78rem;color:var(--text-tertiary)}.tprofile-stat-row-status.is-earned{color:var(--success);font-weight:600}.tprofile-stat-missing{list-style:none;margin:.15rem 0 0;padding:0 0 0 .6rem;border-left:2px solid var(--accent);font-size:.78rem;color:var(--text-secondary)}.tprofile-stat-missing .is-lead{font-weight:600}.tprofile-stat-switch{flex-shrink:0;margin-top:.1rem}.tprofile-stat-switch .switch-label{min-width:4.6rem}@media(max-width:480px){.tprofile-stats{padding:.85rem .75rem .75rem}.tprofile-stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tprofile-stat-value{font-size:1.2rem}}.cabinet-start-second{margin-left:.5rem}.account-menu{position:relative;flex:1;min-width:0}.account-trigger{display:flex;align-items:center;gap:.5rem;width:100%;min-width:0;min-height:44px;padding:.45rem .3rem;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text);font:inherit;text-align:left;cursor:pointer}.account-trigger:hover,.account-trigger[aria-expanded=true]{background:var(--primary-light)}.account-avatar{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:32px;height:32px;border-radius:var(--radius-sm);background:var(--primary-light);color:var(--primary);font-size:.875rem;font-weight:600}.account-caption{display:flex;flex-direction:column;gap:.1rem;min-width:0;flex:1}.account-caption #username-display{display:block;min-width:0}.account-role{font-size:.72rem;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-chevron{flex-shrink:0;color:var(--text-secondary)}.account-panel{position:absolute;bottom:calc(100% + 8px);left:0;z-index:110;width:232px;max-width:calc(100vw - 2rem);max-height:calc(100dvh - 2rem);overflow-y:auto;padding:.45rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);color:var(--text);box-shadow:var(--shadow-md)}.account-panel-heading{padding:.5rem .65rem;font-size:.75rem;color:var(--text-secondary);font-weight:500}.account-action{display:flex;align-items:center;gap:.65rem;width:100%;min-height:44px;padding:.65rem;border:none;border-radius:var(--radius-sm);font:inherit;font-size:.875rem;color:var(--text-secondary);background:transparent;text-decoration:none;text-align:left;cursor:pointer}.account-action:hover,.account-action.active{background:var(--primary-light);color:var(--primary)}.account-action .app-icon{flex-shrink:0}.account-action small{display:block;margin-top:.2rem;font-size:.75rem;color:var(--text-secondary)}.account-divider{border-top:1px solid var(--border);margin:.4rem .65rem}.app-sidebar .nav-right>.notif-wrap{align-self:flex-start;margin-top:.25rem}.track-selector{position:relative;min-width:0}.track-trigger{display:flex;align-items:center;gap:.55rem;width:100%;min-width:0;min-height:44px;padding:.4rem .5rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--glass-bg);color:var(--text);font:inherit;text-align:left;cursor:pointer}.track-trigger:hover,.track-trigger[aria-expanded=true]{background:var(--primary-light)}.track-trigger-icon{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:24px;font-size:1.15rem;line-height:1}.track-trigger-caption{display:flex;flex-direction:column;gap:.05rem;min-width:0;flex:1}.track-trigger-label{font-size:.7rem;color:var(--text-secondary)}.track-trigger-name{font-size:.85rem;font-weight:600;line-height:1.25;overflow-wrap:anywhere}.track-trigger-chevron{flex-shrink:0;color:var(--text-secondary)}.track-panel{position:absolute;top:calc(100% + 6px);left:0;z-index:110;width:260px;max-width:calc(100vw - 2rem);max-height:min(420px,calc(100dvh - 8rem));overflow-y:auto;padding:.45rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);color:var(--text);box-shadow:var(--shadow-md)}.track-search{width:100%;margin-bottom:.35rem;padding:.5rem .65rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--glass-bg);color:var(--text);font:inherit;font-size:.85rem}.track-group+.track-group{margin-top:.25rem;padding-top:.25rem;border-top:1px solid var(--border-light)}.track-group-title{padding:.45rem .65rem .2rem;font-size:.72rem;font-weight:600;color:var(--text-secondary)}.track-option,.track-more{display:flex;align-items:center;gap:.6rem;width:100%;min-height:40px;padding:.5rem .65rem;border:none;border-radius:var(--radius-sm);font:inherit;font-size:.875rem;color:var(--text);background:transparent;text-align:left;cursor:pointer}.track-option:hover,.track-more:hover{background:var(--primary-light);color:var(--primary)}.track-option.selected{color:var(--primary);font-weight:600}.track-option:disabled{cursor:wait;opacity:.6}.track-option-icon{flex-shrink:0;width:22px;text-align:center}.track-option-name{flex:1;min-width:0;overflow-wrap:anywhere}.track-option-check{flex-shrink:0}.track-more{color:var(--text-secondary);font-size:.82rem}.track-empty{padding:.6rem .65rem;font-size:.82rem;color:var(--text-secondary)}.track-error{padding:.45rem .65rem;font-size:.8rem;color:var(--error)}.track-gate-error{max-width:520px;margin:3rem auto;text-align:center;color:var(--text-secondary)}.track-gate-error p{margin-bottom:.75rem}.track-elsewhere{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;margin:0 0 1rem;font-size:.82rem;color:var(--text-secondary)}.track-elsewhere-chip{display:inline-flex;align-items:center;gap:.3rem;padding:.25rem .6rem;border:1px solid var(--border);border-radius:999px;background:var(--glass-bg);font:inherit;font-size:.8rem;color:var(--text);cursor:pointer}.track-elsewhere-chip:hover{border-color:var(--primary);color:var(--primary)}@media(min-width:769px){.app-sidebar.collapsed .track-trigger{justify-content:center;padding:.3rem;border-color:transparent;background:transparent}.app-sidebar.collapsed .track-trigger-caption,.app-sidebar.collapsed .track-trigger-chevron{display:none}.app-sidebar.collapsed .track-panel{top:0;left:calc(100% + 12px)}}@media(max-width:768px){.track-panel{position:static;width:100%;max-width:none;max-height:none;margin-top:.5rem;box-shadow:none}}@media(min-width:769px){.app-sidebar.collapsed .account-menu{flex:none;width:100%}.app-sidebar.collapsed .account-trigger{justify-content:center;padding:.3rem}.app-sidebar.collapsed .account-caption,.app-sidebar.collapsed .account-chevron{display:none}.app-sidebar.collapsed .account-panel{left:calc(100% + 12px);bottom:0}.app-sidebar.collapsed .nav-right>.notif-wrap{align-self:center;margin-top:0}}@media(max-width:768px){.account-panel{position:static;width:100%;max-width:none;max-height:none;margin-top:.5rem;box-shadow:none}.account-menu{flex:1 1 calc(100% - 52px)}.account-trigger{padding:.35rem}}.game-lesson-choice{display:flex;align-items:flex-start;gap:14px;padding:18px;margin-bottom:20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}.game-lesson-choice>.app-icon{color:var(--accent);flex-shrink:0;margin-top:4px}.game-lesson-choice span{display:block;font-size:.78rem;color:var(--text-secondary)}.game-lesson-choice strong{display:block;margin-top:3px;font-size:1.05rem}.game-lesson-choice p{margin:6px 0 0;color:var(--text-secondary);font-size:.85rem;line-height:1.5}.track-transition{max-width:680px;margin:3rem auto;padding:28px;border:1px solid var(--border);border-radius:16px;background:var(--surface)}.track-transition p{line-height:1.6;color:var(--text-secondary)}.track-transition .btn{margin:8px 8px 0 0;max-width:100%;white-space:normal;overflow-wrap:anywhere}.track-unclassified{padding:12px;color:var(--text-secondary);font-size:.85rem}.duel-racetrack{position:relative;isolation:isolate;overflow:hidden;border-radius:24px;background:linear-gradient(155deg,#dceff2,#cee4da,#aecfc2);border:1px solid #ffffff70;color:#1b3642;padding:24px;margin:16px 0 24px;box-shadow:0 18px 48px #0c273323}.duel-race-scenery{position:absolute;z-index:-1;inset:0 0 auto;height:150px;pointer-events:none}.duel-race-scenery svg{position:absolute;width:100%;height:100%;bottom:0;opacity:.24}.duel-race-scenery path:first-child{fill:#618e91}.duel-race-scenery path:last-child{fill:#3f8275}.duel-race-sun{position:absolute;right:14%;top:16px;width:50px;height:50px;border-radius:50%;background:#fff3c7}.duel-race-head{display:flex;justify-content:space-between;align-items:center;gap:12px}.duel-race-head strong{font-size:1.25rem}.duel-race-head>span{font:700 .7rem/1.5 system-ui;letter-spacing:.14em;background:#fff9;border-radius:5px;padding:3px 7px}.duel-race-rule,.duel-race-foot{font-size:.85rem;line-height:1.5;margin:8px 0 18px}.duel-race-foot{margin:16px 0 0}.duel-race-lane{--car-color: #1c7591;margin-top:12px;border-radius:14px;overflow:hidden;background:#f5faf8e8;border:2px solid transparent}.duel-race-lane-b{--car-color: #bb5335}.duel-race-lane.is-mine{border-color:#1c485b}.duel-race-driver{padding:10px 12px;display:flex;justify-content:space-between;align-items:start;gap:8px;font-size:.85rem}.duel-race-driver strong{overflow-wrap:anywhere}.duel-race-driver>span{white-space:nowrap;font-variant-numeric:tabular-nums;font-weight:700}.duel-race-road{background:#34434e;border-block:3px solid #ecede6;height:74px}.duel-race-route{position:relative;height:100%;margin:0 24px 0 72px;border-bottom:2px dashed #dce5df70}.duel-race-route:before{content:"";position:absolute;left:-72px;right:-24px;top:49%;border-top:2px dashed #f5eee547}.duel-race-finish{position:absolute;right:-4px;height:100%;width:8px;background:repeating-conic-gradient(#fff 0,#fff 25%,#152731 0,#152731 50%) 0 / 8px 8px}.duel-race-car{position:absolute;bottom:12px;left:var(--race-progress);transform:translate(-100%);width:70px;height:35px;transition:left .65s cubic-bezier(.2,.7,.2,1);filter:drop-shadow(0 3px 3px #0004)}.duel-race-lane-b .duel-race-car{bottom:16px}.is-car-race .duel-question{border-radius:22px}@media(max-width:480px){.duel-racetrack{padding:16px 10px;border-radius:18px}.duel-race-head strong{font-size:1.05rem}.duel-race-driver{padding:10px 8px;font-size:.8rem}.duel-race-road{height:68px}}@media(prefers-reduced-motion:reduce){.duel-race-car{transition:none}}.workspace-tabs{margin-bottom:.8rem}.workspace-scope-hint{margin:0 0 .85rem;color:var(--text-secondary);font-size:.82rem;line-height:1.5}.workspace-block-form{display:grid;gap:1rem}.workspace-block-form>.workspace-scope-hint{margin-bottom:0}.workspace-exercise-fields{min-width:0;padding-top:1rem;border-top:1px solid var(--border)}.workspace-exercise-fields>h5{margin:0 0 .8rem;font-size:.875rem}.workspace-block-form .block-points-field{flex-wrap:wrap}.workspace-lesson-form{display:grid;gap:1rem;max-width:760px;margin-inline:auto}.lesson-settings-group{border-top:1px solid var(--border);padding:.9rem 0}.lesson-settings-group:last-child{padding-bottom:0}.lesson-settings-group>summary{cursor:pointer;color:var(--text);font-size:.875rem;font-weight:600;line-height:1.5}.lesson-settings-group>summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:var(--radius-sm)}.lesson-settings-group[open]>summary{margin-bottom:.85rem}.lesson-settings-group .workspace-scope-hint{margin-top:0}.lesson-settings-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem}.lesson-settings-fields>label,.lesson-settings-label{display:grid;gap:.35rem;min-width:0;font-size:.82rem}.lesson-settings-fields>label>span,.lesson-settings-label>span{font-weight:600}.lesson-settings-fields input,.lesson-settings-label select{width:100%;max-width:100%;min-width:0}.lesson-settings-fields small{color:var(--text-secondary)}.creation-assignment>.assignment-settings{border:0;padding:0}.creation-options>h4{margin-bottom:.75rem}@media(max-width:600px){.lesson-settings-fields,.content-workspace-grid{grid-template-columns:minmax(0,1fr)}.workspace-tabs .page-tab{flex:1;justify-content:center;font-size:.78rem}}