/* Shared visual language for Home, lessons and utilities. No font/icon CDN. */
:root{--canvas:#f1f5f9;--surface:#fff;--soft:#f8fafc;--ink:#1e293b;--muted:#64748b;--line:#e2e8f0;--blue:#0284c7;--blue-dark:#0369a1;--blue-soft:#f0f9ff;--blue-line:#bae6fd;--green:#047857;--green-soft:#ecfdf5;--amber:#a16207;--amber-soft:#fffbeb;--red:#b91c1c;--red-soft:#fef2f2;--radius:16px;--shadow:0 2px 6px #0f172a04,0 1px 2px #0f172a05;color-scheme:light}
body{background:var(--canvas);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:3px}button{touch-action:manipulation}button:disabled{cursor:default;opacity:.5}.primary,.secondary,.navbtn,.tool,.focusbtn,.mode{min-height:44px}.primary,.secondary{justify-content:center;font-size:13px;line-height:1.4;padding:10px 14px;border-radius:12px;transition:background-color .15s,border-color .15s,transform .15s}.primary{background:var(--blue);color:white;box-shadow:0 1px 2px #0284c71a}.secondary{background:var(--soft);border:1px solid var(--line);color:var(--ink)}.primary:active,.secondary:active,.homeitem:active{transform:scale(.985)}
.ui-icon{width:19px;height:19px;flex:0 0 19px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.hint,.audio-status,.homeitem small,.vocab-card small{color:var(--muted);line-height:1.6}.eyebrow{color:var(--muted);font-size:10px;font-weight:700;letter-spacing:.09em;line-height:1.5}.section-label{font-size:11px;font-weight:750;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 14px;display:flex;align-items:center;gap:8px}.section-label .ui-icon{color:var(--blue)}
.topbar{background:var(--surface);border-color:var(--line)}.brand{color:var(--blue);letter-spacing:-1px}.modes{gap:2px;align-items:center}.mode{height:44px;min-height:44px;padding:0 14px;border:0;border-radius:10px;font-size:13px;font-weight:650;color:var(--muted);gap:7px}.mode.active{background:var(--blue-soft);color:var(--blue-dark)}.mode svg{stroke-width:1.7}.focusbtn{background:var(--soft);border:1px solid var(--line);border-radius:10px;color:var(--ink);min-height:44px;font-size:12px}.top-actions{gap:6px}.top-actions .focusbtn{padding:7px 9px}.top-actions .focusbtn svg{width:16px;height:16px}.rail{flex-basis:52px;padding:12px 4px;border-color:var(--line);gap:8px}.tool{width:44px;height:44px;background:transparent;color:var(--muted);border-radius:12px}.tool.on{background:var(--blue-soft);color:var(--blue)}.tool svg{width:21px;height:21px;stroke-width:1.7}
.panel{background:var(--surface);transition:flex-basis .2s ease,width .2s ease}.side,.right{border-color:var(--line)}.panel-inner{padding:16px 10px;overscroll-behavior:contain}.panel h3{font-size:15px;margin:0 4px 12px}.node{background:transparent;color:var(--ink);font-size:13px;min-height:44px;padding:10px 9px;margin:2px 0;border-radius:10px}.node.active{background:var(--blue-soft);color:var(--blue-dark)}.map-unit-toggle{background:var(--soft);font-weight:700}.map-lesson-toggle{font-size:12px;color:var(--muted)}.map-activities .node.child{font-size:12px;line-height:1.5}.map-lessons{border-color:var(--line)}.map-chevron{stroke-width:1.6}.map-label{overflow-wrap:break-word}
.main{padding:24px;scrollbar-gutter:stable;overscroll-behavior:contain;container-type:inline-size;container-name:lesson}.card{max-width:1100px;padding:0;background:transparent;border:0;border-radius:0;box-shadow:none}.lesson-head{align-items:center;margin-bottom:20px;gap:16px;padding:0 2px}.lesson-head h1{font-size:clamp(21px,2.3vw,28px);font-weight:750;line-height:1.3;letter-spacing:-.6px;margin-top:5px}.page-badge{background:var(--surface);color:var(--blue-dark);border:1px solid var(--line);font-size:10px;letter-spacing:.04em;padding:7px 10px;white-space:nowrap;flex-shrink:0;box-shadow:var(--shadow)}
.surface,.smart-review,.test-gate{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.lesson-layout,.lesson-layout.activity-sheet{display:flex;flex-direction:column;gap:20px;margin-top:0}.activity-source{position:relative}.source-heading{display:flex;align-items:center;gap:12px;margin-bottom:18px}.activity-number{width:32px;height:32px;flex:0 0 32px;background:var(--blue);color:#fff;border-radius:50%;display:grid;place-items:center;font-size:14px;font-weight:750;box-shadow:0 2px 3px #0284c714}.source-heading h2{font-size:clamp(17px,2vw,21px);line-height:1.35;margin:0;letter-spacing:-.3px;flex:1;min-width:0}.source-zoom{margin:0;font-size:11px;color:var(--blue-dark);background:var(--blue-soft);border-color:var(--blue-line);padding:8px 10px;min-height:44px;white-space:nowrap}.source-zoom .ui-icon{width:15px;height:15px;flex-basis:15px}.bookpage{width:100%;height:auto;object-fit:contain;border:1px solid var(--line);border-radius:12px;background:#fff}.bookpage+.bookpage{margin-top:14px}.activity-box{display:grid;grid-template-columns:minmax(0,1fr);gap:20px;background:transparent;border:0;border-radius:0;padding:0;min-width:0}.activity-box>.surface{min-width:0}.lesson-practice>*:last-child{margin-bottom:0}.lesson-practice>.secondary:only-of-type{width:100%}
.audio-toolbar{display:flex;align-items:center;gap:14px;margin:0;padding:16px;background:var(--soft);border:1px solid var(--line);border-radius:12px}.audio-toggle{width:44px;height:44px;min-width:44px;flex:0 0 44px;border-radius:50%;padding:0}.audio-toggle .ui-icon{width:18px;height:18px;flex-basis:18px}.audio-toggle span{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.audio-copy{flex:1;min-width:0}.audio-caption{display:flex;justify-content:space-between;gap:8px;align-items:center;font-size:12px;margin-bottom:7px}.audio-caption b{font-weight:650;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.audio-time{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}.audio-seek{display:block;width:100%;min-width:0;height:20px;accent-color:var(--blue);margin:0;cursor:pointer}.audio-seek:disabled{opacity:.55;cursor:default}.speed-control{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:0;gap:0;flex-shrink:0}.speed-control button{padding:0;min-width:36px;min-height:44px;background:transparent;border:0;font-size:18px;color:var(--muted)}.speed-control output{min-width:46px;font-size:12px;color:var(--blue-dark);font-weight:750}.audio-status{margin:10px 0 0;font-size:11px}.audio-status:empty{display:none}.segment-controls{gap:8px;margin:14px 0 0}.segment-controls button{font-size:12px;min-height:44px;color:var(--blue-dark);background:var(--blue-soft);border:1px solid var(--blue-line)}
.transcript-disclosure{margin-top:16px;border-top:1px solid var(--line);padding-top:12px}.transcript-disclosure summary,.shadowing summary{list-style:none;cursor:pointer;min-height:44px;display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700}.transcript-disclosure summary::-webkit-details-marker,.shadowing summary::-webkit-details-marker{display:none}.transcript-disclosure summary{padding:12px 14px;background:var(--blue-soft);border:1px solid #e0f2fe;border-radius:12px;color:var(--blue-dark)}.transcript-disclosure summary:after,.shadowing summary:after{content:'';width:7px;height:7px;border:solid currentColor;border-width:0 1.5px 1.5px 0;transform:rotate(45deg);margin-left:auto;flex:0 0 7px;transition:transform .15s}.transcript-disclosure[open]>summary:after,.shadowing[open]>summary:after{transform:rotate(225deg)}.transcript-lines{padding-top:8px}.dialogue-row{margin:10px 0;gap:10px;grid-template-columns:minmax(0,1fr) auto;align-items:start}.dialogue-row.has-actor{grid-template-columns:46px minmax(0,1fr) auto}.dialogue-row .actor{font-size:10px;gap:5px;color:var(--blue-dark);padding-top:5px}.portrait{width:34px;height:34px;flex-basis:34px;border:1px solid var(--blue-line);background-color:var(--blue-soft)}.sentence{background:var(--soft);border:1px solid var(--line);border-radius:12px;font-size:14px;line-height:1.65;font-weight:550;color:var(--ink);padding:12px 14px;margin:8px 0;min-height:44px}.dialogue-row>.secondary{min-width:44px;padding:10px 8px;font-size:11px;color:var(--blue-dark)}.transcript-target.transcript-active{background:#e0f2fe;color:#075985;box-shadow:inset 0 0 0 2px #38bdf8;border-radius:10px}.transcript-target[role=button]:focus-visible{outline-color:var(--blue)}.reading-passage{padding:16px;background:var(--soft);border:1px solid var(--line);border-radius:12px;font-size:15px;line-height:1.9;color:var(--ink);margin:8px 0 16px}.lyrics p{line-height:1.8;font-size:14px}
.shadowing{border-top:1px solid var(--line);margin:0;padding:20px;align-self:start}.shadowing summary{padding:0 0 12px;border-bottom:1px solid var(--line);font-size:14px;letter-spacing:-.2px;color:var(--ink)}.shadowing>.hint:first-of-type{color:var(--blue-dark);font-size:11px;font-weight:700}.shadowing>.actions:first-of-type{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:3px;background:var(--soft);border:1px solid var(--line);border-radius:11px;padding:3px}.shadowing>.actions:first-of-type button{padding:8px 3px;min-width:0;border:0;background:transparent;color:var(--muted);font-size:11px;border-radius:8px}.shadowing button[aria-pressed=true]{background:var(--surface)!important;color:var(--blue-dark)!important;box-shadow:0 1px 4px #0f172a14!important}.shadowing-line{background:var(--blue-soft);border:1px solid #e0f2fe;color:var(--ink);font-size:17px;font-weight:700;line-height:1.6;padding:18px;margin:16px 0;border-radius:12px}.shadowing-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.shadowing-controls>.speed-control{grid-column:1/-1;justify-self:end;margin-bottom:4px;grid-row:1}.shadowing-controls button{font-size:12px;padding:10px 8px}.shadowing-controls>button:last-child{grid-column:1/-1}.shadowing [role=status]{font-size:11px;line-height:1.6;margin:12px 0}.shadowing audio,.speaking-tools audio{width:100%;max-width:100%;height:42px;margin:12px 0;border-radius:10px}.shadowing .self-rating{display:grid;grid-template-columns:1fr 1fr;gap:8px}.shadowing .self-rating button{font-size:11px;padding:10px 6px}.shadowing .sentence-navigation{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px;margin-top:18px;gap:8px}.shadowing .sentence-navigation button{font-size:11px;padding:9px 10px}.speaking-tools{margin:0;padding:20px;align-self:start}.speaking-tools>p:first-child{margin-top:0}.speaking-tools button{margin-right:6px}.speaking-prompts{gap:8px;margin:12px 0}.speaking-prompts span,.word-bank span{background:var(--blue-soft);border:1px solid var(--blue-line);color:var(--blue-dark);border-radius:8px;font-size:13px}.speaking-prompts p{line-height:1.65}
.exercise{gap:12px}.exercise-card{margin:0;min-width:0;background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:16px;font-size:14px;line-height:1.6}.exercise-card>p:first-child{margin-top:0}.exercise legend{font-size:13px;font-weight:650;color:var(--ink);padding:0 5px;max-width:100%}.exercise input,.exercise select,.recall-form input,.smart-review select,.recall-form select,.test-gate input{font:inherit;font-size:14px;color:var(--ink);background:var(--surface);border:1px solid #cbd5e1;border-radius:9px;min-height:44px;padding:9px 11px;max-width:100%}.exercise input:not([type=radio]):not([type=checkbox]){margin:4px;vertical-align:middle}.exercise input[type=radio],.exercise input[type=checkbox],.recall-form input[type=checkbox]{accent-color:var(--blue);width:22px;height:22px;min-height:22px;min-width:22px;padding:0;flex:0 0 22px}.answer-option{min-height:44px;padding:8px;margin:3px 0;gap:10px}.answer-option:has(input:checked){background:#e0f2fe}.exercise .correct,.exercise fieldset.correct{border-color:#10b981;background:var(--green-soft)}.exercise .incorrect,.exercise fieldset.incorrect{border-color:#f87171;background:var(--red-soft)}.exercise-result{font-size:13px;line-height:1.6;margin:4px 0 0;color:var(--ink)}.exercise-result:empty{display:none}.exercise>.actions{margin:6px 0 0;display:flex;gap:8px}.exercise>.actions>.primary{flex:1}.exercise>.primary{width:100%}.workbook-notice{border:1px solid #fde68a;background:var(--amber-soft);color:var(--amber);border-radius:12px;font-size:13px;line-height:1.65}.tick-grid{font-size:12px}.tick-grid th,.tick-grid td{border-color:var(--line);padding:10px}.tick-grid th{background:var(--soft)}.table-scroll{border-radius:10px}.board-cells li,.game-board button{background:var(--soft);border-color:var(--line);font-size:13px}.board-cells li.active{background:var(--blue-soft);border-color:var(--blue)}.game-board .good{background:var(--green-soft);border-color:#10b981}.game-board .bad{background:var(--red-soft);border-color:#f87171}.pupil-card-preview{border:1px solid var(--blue-line);background:var(--blue-soft);border-radius:12px}.pupil-card-preview h3{color:var(--blue-dark)}.pupil-card-preview p{border-color:var(--blue-line)}.assessment-summary{background:var(--blue-soft);font-size:13px}.assessment-form .review{background:var(--amber-soft);border-color:#f59e0b}
.home-view>h3,.reading-library>h3{font-size:15px;font-weight:700;letter-spacing:-.2px;margin:24px 0 12px}.home-highlights{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(280px,100%),1fr));gap:16px;margin-bottom:24px}.continue-card,.review-home-card{padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.continue-card .recent-lesson{padding:0;margin:12px 0 0;border:0;background:none;font-size:18px;font-weight:700;color:var(--ink);line-height:1.5}.review-home-card{margin:0;min-height:120px;background:var(--blue-soft);border-color:var(--blue-line);color:var(--blue-dark);display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:10px}.review-home-card b{font-size:19px;font-weight:750;letter-spacing:-.3px}.review-home-card span{font-size:13px;color:var(--blue-dark)}.review-home-card:disabled{opacity:.8}.homegrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.homeitem{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;text-align:left;box-shadow:var(--shadow);min-height:100px;min-width:0;color:var(--ink);transition:border-color .15s,transform .15s}.catalog-icon{display:grid;place-items:center;width:44px;height:44px;flex:0 0 44px;border-radius:12px;background:var(--blue-soft);color:var(--blue)}.catalog-copy{display:block;min-width:0;flex:1}.catalog-copy b{display:block;font-size:14px;font-weight:700;line-height:1.5}.homeitem small{font-size:11px;margin-top:5px}.catalog-arrow{width:16px;height:16px;flex-basis:16px;color:#94a3b8}.catalog-progress{display:block;height:4px;border-radius:4px;overflow:hidden;background:var(--line);margin-top:12px}.catalog-progress i{height:100%;display:block;background:var(--blue);border-radius:4px}.remember{padding:18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);color:var(--muted);font-size:13px;line-height:1.9;box-shadow:var(--shadow)}.reading-library{margin:0 0 24px;padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.reading-library>h3{margin-top:0}.reading-card{background:var(--soft);justify-content:flex-start;color:var(--ink);min-height:52px;gap:10px;font-size:12px;line-height:1.5}.reading-card .ui-icon{color:var(--blue)}.reading-shortcut{background:var(--blue-soft);border-color:var(--blue-line);color:var(--blue-dark);margin:0 0 16px;font-size:12px}
.memory-tabs{background:var(--surface);gap:3px;top:-1px}.memory-tabs button{font-size:11px;border:0;background:var(--soft);color:var(--muted)}.memory-tabs [aria-selected=true]{background:var(--blue-soft);color:var(--blue-dark)}.memory-card{border-color:var(--line);padding:12px 0}.vocab-card{background:var(--surface);border-color:var(--line);border-radius:12px;padding:8px;font-size:13px;line-height:1.4}.vocab-card img{background:var(--soft);border-radius:8px}.memory-card>.secondary{font-size:11px;width:100%}.memory-source{color:var(--blue-dark);font-size:11px}.recall-form{font-size:13px;gap:12px}.smart-review{max-width:760px;margin:0 auto}.review-progress{color:var(--blue-dark);font-size:12px}.smart-review .shadowing{box-shadow:none;border-radius:12px;margin-top:18px}.test-gate{max-width:480px;margin:20px auto}.test-gate h3{margin:0;font-size:18px}.test-gate label{font-size:13px}.test-gate .primary{width:100%}
.bottombar{border-color:var(--line);color:var(--muted);gap:12px;font-size:11px}.navbtn{min-height:32px;color:var(--ink);font-weight:650;font-size:12px;padding:4px 8px}.bar{height:4px;background:var(--line)}.bar i{background:var(--blue)}.progresswrap{font-variant-numeric:tabular-nums}.focus .main{padding:24px}.focus .card{max-width:1100px}#exitFocus{background:var(--surface);border-color:var(--line);color:var(--ink);box-shadow:var(--shadow)}#offlineDialog{border-color:var(--line);color:var(--ink);box-shadow:0 16px 80px #0f172a26}#offlineDialog::backdrop{background:#0f172a55}
.buddy-launcher,.buddy-panel,.buddy-bubble-toggle{border-color:var(--blue-line)}.buddy-panel{box-shadow:0 12px 44px #0f172a1f}.buddy-status,.buddy-line{background:var(--blue-soft);color:var(--ink)}.buddy-line.user{background:var(--soft)}.buddy-bubble-toggle{color:var(--blue)}.buddy-header,.buddy-controls{background:var(--surface)}.buddy-form textarea{border-color:var(--line);color:var(--ink)}.buddy-mic-state,.buddy-panel .hint{color:var(--muted)}.buddy-footer,.buddy-barge,.buddy-transcript{border-color:var(--line)}
@container lesson (min-width:860px){.speaking-layout{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start}.speaking-layout>.lesson-practice{grid-column:1/-1}}
@media(hover:hover){.primary:hover{background:var(--blue-dark)}.secondary:hover,.tool:hover,.focusbtn:hover{background:#eaf1f7}.mode:hover{background:var(--soft)}.mode.active:hover{background:var(--blue-soft)}.homeitem:hover{border-color:var(--blue-line)}.sentence:hover{border-color:var(--blue-line)}.review-home-card:not(:disabled):hover{background:#e0f2fe}}
@media(max-width:1100px){.main{padding:20px}.mode{padding:0 10px;font-size:12px}.top-actions .focusbtn span{display:none}}
@media(max-width:900px){.main{padding:18px}.surface{padding:18px}.mode{padding:0 8px;gap:5px}.mode svg{width:16px;height:16px}.brand{font-size:19px}.homeitem{padding:16px;gap:12px}.homegrid{gap:12px}}
@container lesson (max-width:600px){.homegrid{grid-template-columns:1fr}.home-highlights{grid-template-columns:1fr}.audio-toolbar{gap:10px;padding:12px;flex-wrap:wrap}.audio-copy{flex-basis:calc(100% - 60px)}.audio-toolbar>.speed-control{margin-left:auto}.source-heading{flex-wrap:wrap;gap:10px}.source-heading h2{font-size:17px}.source-zoom{margin-left:auto}.surface{padding:16px}.dialogue-row.has-actor{grid-template-columns:36px minmax(0,1fr) auto;gap:7px}.dialogue-row .sentence{padding:10px;font-size:13px}.portrait{width:30px;height:30px;flex-basis:30px}.reading-library{padding:16px}}
@media(max-width:700px){.main{padding:14px}.rail{flex-basis:48px}.mode{padding:0 10px}.lesson-head{gap:10px;margin-bottom:16px}.lesson-head h1{font-size:21px}.eyebrow{font-size:9px}.page-badge{font-size:9px}.lesson-layout,.lesson-layout.activity-sheet,.activity-box{gap:16px}.source-heading h2{font-size:17px}.focus .main{padding:18px}}
@media(max-width:400px){.mode{padding:0 7px}.top-actions .focusbtn{padding:6px}.top-actions{gap:3px}.brand{font-size:17px}.main{padding:10px}.surface{padding:14px}.dialogue-row.has-actor{grid-template-columns:30px minmax(0,1fr)}.dialogue-row>.secondary{grid-column:2;justify-self:end;min-height:44px}.exercise-card{padding:12px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}.primary:active,.secondary:active,.homeitem:active{transform:none}}

.complete-action{width:100%;grid-column:1/-1;background:var(--green);border-color:var(--green);color:#fff;min-height:46px}.complete-action:hover{background:#065f46;color:#fff}.activity-box[data-activity-type="listen-number"] .exercise>.actions,.activity-box[data-activity-type="listen-number"] .exercise>.exercise-result{grid-column:1/-1}
@container lesson (min-width:560px){.activity-box[data-activity-type="listen-number"] .exercise{grid-template-columns:repeat(2,minmax(0,1fr))}.activity-box[data-activity-type="listen-number"] .exercise-card{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.activity-box[data-activity-type="listen-number"] .exercise-image{margin:0;width:72px;height:56px}.activity-box[data-activity-type="listen-number"] .exercise-card>label{margin-left:auto}}