:root{--bg:#f6f4ef;--surface:#fff;--surface-2:#efece4;--text:#1d1f23;--muted:#6a6f78;--line:#e2ded3;--accent:#e0573a;--accent-2:#2f6fb2;--good:#2e9d5b;--warn:#d4901c;--bad:#c93c3c;--gold:#f2b632;--radius:16px;--shadow:0 6px 24px #1e190f14;--tab-h:64px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:Noto Sans TC,system-ui,-apple-system,PingFang TC,Microsoft JhengHei,sans-serif}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#15171b;--surface:#1f2228;--surface-2:#2a2e35;--text:#eceef1;--muted:#9aa1ab;--line:#343941;--shadow:0 6px 24px #00000059;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#15171b;--surface:#1f2228;--surface-2:#2a2e35;--text:#eceef1;--muted:#9aa1ab;--line:#343941;--shadow:0 6px 24px #00000059;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent;margin:0}body{overscroll-behavior-y:none;min-height:100dvh}button{font:inherit;color:inherit;cursor:pointer}a{color:var(--accent-2)}.en{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app{max-width:960px;padding-bottom:calc(var(--tab-h) + env(safe-area-inset-bottom) + 16px);margin:0 auto}.page{flex-direction:column;gap:16px;padding:16px;display:flex}.page-header{align-items:center;gap:12px;min-height:44px;display:flex}.page-header h1{flex:1;margin:0;font-size:20px}.back{background:var(--surface-2);border:0;border-radius:999px;width:44px;height:44px;font-size:18px}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.card h2{margin:0 0 8px;font-size:17px}.muted{color:var(--muted)}.small{font-size:13px}.row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.grow{flex:1}.stack{flex-direction:column;gap:8px;display:flex}.grid2{grid-template-columns:1fr 1fr;gap:12px;display:grid}.btn{background:var(--surface-2);border:0;border-radius:12px;min-height:44px;padding:12px 16px;font-weight:600}.btn.primary{background:var(--accent);color:#fff}.btn.blue{background:var(--accent-2);color:#fff}.btn.ghost{border:1px solid var(--line);background:0 0}.btn.big{width:100%;padding:16px 20px;font-size:18px}.btn:disabled{opacity:.45;cursor:default}.chip{border:1px solid var(--line);background:var(--surface);border-radius:999px;min-height:44px;padding:6px 14px;font-size:14px}.chip.on{background:var(--text);color:var(--bg);border-color:var(--text)}.pill{background:var(--surface-2);color:var(--muted);border-radius:999px;padding:2px 8px;font-size:12px;display:inline-block}.tabbar{height:calc(var(--tab-h) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--surface);border-top:1px solid var(--line);z-index:20;justify-content:center;display:flex;position:fixed;bottom:0;left:0;right:0}.tabbar a{max-width:180px;color:var(--muted);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;font-size:12px;text-decoration:none;display:flex;position:relative}.tabbar a.on{color:var(--accent);font-weight:700}.tabbar .ico{font-size:22px;line-height:1}.badge{background:var(--accent);color:#fff;border-radius:999px;padding:1px 6px;font-size:10px;position:absolute;top:6px;left:calc(50% + 8px)}.hero{color:#fff;box-shadow:var(--shadow);background:linear-gradient(135deg,#e0573a,#f2a33a);border-radius:20px;padding:20px}.hero h2{margin:4px 0;font-size:24px}.hero .btn{color:#c2412a;background:#fff}.stage{aspect-ratio:4/3;background:#20252c;border-radius:0 0 20px 20px;width:100%;max-height:46dvh;position:relative;overflow:hidden}.lesson-layout{--stage-h:min(38dvh, 75vw)}.lesson-layout .stage{z-index:10;aspect-ratio:auto;height:var(--stage-h);max-height:none;position:sticky;top:0}.lesson-layout .line-item,.lesson-layout .scroll-anchor{scroll-margin-top:calc(var(--stage-h) + 12px)}.lesson-head{display:none}@media (width>=760px){.stage{aspect-ratio:16/9;border-radius:20px;max-height:60dvh}.lesson-layout{--stage-h:min(46dvh, 56vw);padding:16px}.lesson-layout .stage{top:8px}}.stage-controls{pointer-events:none;justify-content:space-between;gap:6px;display:flex;position:absolute;top:8px;left:8px;right:8px}.stage-controls>*{pointer-events:auto}.stage-controls .chip{color:#fff;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#00000073;border-color:#0000;min-width:44px;padding:4px 11px;font-size:13px}.stage-controls .chip .label{display:none}@media (width>=600px){.stage-controls .chip .label{display:inline}}.stage-info{color:#fff;pointer-events:none;background:linear-gradient(#0000,#0000008c);padding:18px 12px 0;position:absolute;bottom:0;left:0;right:0}.stage-info .title{white-space:nowrap;align-items:baseline;gap:8px;padding-bottom:6px;font-size:13px;display:flex;overflow:hidden}.stage-info .title b{text-overflow:ellipsis;overflow:hidden}.stage-info .title span{opacity:.85;flex-shrink:0;margin-left:auto;font-size:12px}.stage-info .steps span{background:#ffffff4d;border-radius:0;height:3px}.stage-info .steps span.on{background:var(--accent)}.stage-controls .chip.on{color:#111;background:#fff}.tap-hint{color:#fff;pointer-events:none;background:#00000080;border-radius:999px;padding:4px 10px;font-size:12px;position:absolute;bottom:40px;left:50%;transform:translate(-50%)}.steps{gap:4px;display:flex}.steps span{background:var(--line);border-radius:4px;flex:1;height:4px}.steps span.on{background:var(--accent)}.subtitle{font-size:20px;line-height:1.5}.subtitle .w{border-radius:4px;padding:0 1px;transition:background .1s}.subtitle .w.now{background:var(--gold);color:#111}.subtitle .w.chunk{-webkit-text-decoration:underline 2px var(--accent-2);text-decoration:underline 2px var(--accent-2);text-underline-offset:4px}.speaker{color:var(--muted);text-transform:uppercase;letter-spacing:.05em;font-size:12px;font-weight:700}.zh{color:var(--muted);font-size:15px}.line-item{border:1px solid #0000;border-radius:12px;padding:10px 12px}.line-item.active{border-color:var(--accent);background:var(--surface)}.line-item.me .speaker{color:var(--accent)}.chunk-tag{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;align-items:center;gap:6px;min-height:44px;padding:6px 12px;font-size:14px;display:inline-flex}.chunk-tag.on{border-color:var(--gold);color:#3a2a00;background:#fff4d6}.rec{background:var(--accent);color:#fff;border:0;border-radius:999px;width:72px;height:72px;font-size:28px;box-shadow:0 0 #e0573a80}.rec.on{background:var(--bad);animation:1.2s infinite pulse}@keyframes pulse{0%{box-shadow:0 0 #c93c3c8c}to{box-shadow:0 0 0 18px #c93c3c00}}.meter{background:var(--line);border-radius:6px;height:6px;overflow:hidden}.meter>div{background:var(--good);height:100%;transition:width 80ms}.compare canvas{background:var(--surface-2);border-radius:12px;width:100%;height:120px;display:block}.legend{color:var(--muted);gap:12px;font-size:12px;display:flex}.legend i{vertical-align:-1px;border-radius:3px;width:10px;height:10px;margin-right:4px;display:inline-block}.stat{flex-direction:column;gap:2px;display:flex}.stat b{font-size:22px}.word.miss{color:var(--bad);text-decoration:line-through}.word.ok{color:var(--good)}.option{text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:12px;min-height:48px;padding:12px 14px}.option.right{border-color:var(--good);background:color-mix(in srgb, var(--good) 14%, var(--surface))}.option.wrong{border-color:var(--bad);background:color-mix(in srgb, var(--bad) 12%, var(--surface))}.sheet-backdrop{z-index:40;background:#0006;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}.sheet{background:var(--surface);width:100%;max-width:560px;max-height:85dvh;padding:16px 16px calc(16px + env(safe-area-inset-bottom));border-radius:20px 20px 0 0;flex-direction:column;gap:12px;display:flex;overflow:auto}@media (width>=760px){.sheet-backdrop{align-items:center}.sheet{border-radius:20px}}.timer{font-variant-numeric:tabular-nums;font-size:40px;font-weight:800}.cue{white-space:pre-line}.map-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;display:grid}.node{background:var(--surface-2);border:1px dashed var(--line);text-align:left;min-height:64px;color:var(--muted);border-radius:14px;padding:12px}.node.lit{border:1px solid var(--gold);color:#3a2a00;background:#fff4d6}.bar{background:var(--line);border-radius:8px;height:8px;overflow:hidden}.bar>div{background:var(--accent);height:100%}.ring{--p:0;background:conic-gradient(var(--accent) calc(var(--p) * 1%), var(--line) 0);border-radius:999px;place-items:center;width:64px;height:64px;display:grid}.ring>div{background:var(--surface);border-radius:999px;place-items:center;width:50px;height:50px;font-size:14px;font-weight:800;display:grid}.lesson-row{border-bottom:1px solid var(--line);color:inherit;align-items:center;gap:12px;padding:10px 4px;text-decoration:none;display:flex}.lesson-row .dot{background:var(--surface-2);border-radius:999px;place-items:center;width:28px;height:28px;font-size:13px;display:grid}.lesson-row .dot.done{background:var(--good);color:#fff}.lesson-row .dot.next{background:var(--accent);color:#fff}.room-wrap{height:max(360px, calc(100dvh - var(--tab-h) - env(safe-area-inset-bottom) - 200px));background:#2b2520;border-radius:20px;position:relative;overflow:hidden}.mouth-wrap{background:#1c2026;border-radius:20px;height:40dvh;min-height:260px;position:relative;overflow:hidden}.toast{left:50%;bottom:calc(var(--tab-h) + 24px);background:var(--text);color:var(--bg);z-index:60;border-radius:999px;padding:10px 16px;font-size:14px;position:fixed;transform:translate(-50%)}.trend{width:100%;height:48px}input[type=text],input[type=email],textarea{font:inherit;border:1px solid var(--line);background:var(--surface);width:100%;color:var(--text);border-radius:12px;padding:10px 12px}.action-bar{z-index:5;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:color-mix(in srgb, var(--bg) 92%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid var(--line);gap:8px;margin:0 -16px -16px;display:flex;position:sticky;bottom:0}.action-bar>.btn{flex:1}.link-btn{color:var(--accent-2);background:0 0;border:0;min-height:44px;padding:10px 4px;font-size:14px}@media (orientation:landscape) and (height<=540px){.lesson-layout{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:0;padding:0;display:grid}.lesson-layout .stage{border-radius:0;height:100dvh;top:0}.lesson-layout .line-item,.lesson-layout .scroll-anchor{scroll-margin-top:12px}}@media (width>=1100px){.lesson-layout .line-item,.lesson-layout .scroll-anchor{scroll-margin-top:24px}.lesson-head{display:flex}.stage-info .title{display:none}.app:has(.lesson-layout){max-width:1400px}.lesson-layout{grid-template-columns:minmax(0,3fr) minmax(380px,2fr);align-items:start;gap:16px;display:grid}.lesson-layout .stage{aspect-ratio:16/9;height:auto;max-height:calc(100dvh - 32px);position:sticky;top:16px}.lesson-layout .page{padding-top:0}}.tap-link{align-items:center;min-height:44px;padding:0 4px;display:inline-flex}.type-explain{border-left:4px solid var(--accent-2);background:var(--surface-2);border-radius:0 12px 12px 0;flex-direction:column;gap:4px;padding:10px 12px;display:flex}.type-explain .why{color:var(--text)}.ipa{gap:12px}a.chip.ext{color:var(--accent-2);align-items:center;text-decoration:none;display:inline-flex}.dissect-words{flex-wrap:wrap;gap:2px;font-size:19px;line-height:1.2;display:flex}.word-btn{min-height:44px;font:inherit;background:0 0;border:0;border-radius:8px;padding:10px 5px}.word-btn.picked{background:color-mix(in srgb, var(--accent-2) 22%, transparent)}.word-btn.answer{-webkit-text-decoration:underline 3px var(--good);text-decoration:underline 3px var(--good);text-underline-offset:6px}.word-btn:disabled{color:inherit;cursor:default}.type-picker{grid-template-columns:1fr 1fr;gap:6px;display:grid}.type-picker .chip{text-align:left;border-radius:12px}.type-picker .chip:disabled{opacity:.45}.verdict{font-weight:700}.verdict.good{color:var(--good)}.verdict.warn{color:var(--warn)}.verdict.bad{color:var(--bad)}.answer-row{background:var(--surface-2);border-radius:12px;padding:8px 10px}.answer-row.matched{outline:2px solid var(--good)}.grid3{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.grid3 .card{padding:12px}.grid3 .stat b{font-size:18px}.fold{text-align:left;background:0 0;border:0;width:100%;min-height:44px;padding:0}.type-no{background:var(--accent-2);color:#fff;border-radius:999px;flex-shrink:0;place-items:center;width:32px;height:32px;font-weight:800;display:grid}input.search{font:inherit;border:1px solid var(--line);background:var(--surface);width:100%;color:var(--text);border-radius:12px;min-height:44px;padding:10px 12px}.tabs{gap:6px}.mine-row{border-top:1px solid var(--line);align-items:center;gap:8px;padding-top:8px;display:flex}.mine-main{text-align:left;background:0 0;border:0;min-height:44px;padding:4px 0}.field{gap:4px}.room-label{white-space:nowrap;color:#2b2116;pointer-events:auto;background:#fffaf0e6;border:0;border-radius:8px;flex-direction:column;align-items:center;gap:1px;padding:3px 7px;font-family:inherit;font-size:12px;line-height:1.2;display:flex}button.room-label{cursor:pointer;min-height:36px}.room-label span{color:#6a5a45;font-size:11px}.sheet>.chip,.stack>.chip[aria-label=顯示中文]{align-self:flex-start}.label-layer{pointer-events:none;position:absolute;inset:0;overflow:hidden}.label-layer .room-label{visibility:hidden;position:absolute;top:0;left:0}