:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--paper:#fff8ec;--card:#fff;--ink:#3a2e2a;--muted:#8a7a70;--line:#f0e3cf;--coral:#ff7a59;--coral-dark:#e85d3c;--teal:#20a596;--sun:#ffc93c;--sky:#e6f4fb;--radius:22px;--shadow:0 6px 20px #7850281f;--font:ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN", "Nunito", "Arial Rounded MT Bold", system-ui, sans-serif;--font-zh:"PingFang TC", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif}*{box-sizing:border-box}html,body{height:100%;margin:0}body{background:var(--paper);color:var(--ink);font-family:var(--font);-webkit-tap-highlight-color:transparent;-webkit-font-smoothing:antialiased}[lang^=zh]{font-family:var(--font-zh)}button,a.big{font:inherit;color:inherit}button{cursor:pointer}[hidden]{display:none!important}:focus-visible{outline:3px solid var(--teal);outline-offset:2px}.segmented{background:var(--line);border-radius:999px;gap:4px;padding:4px;display:inline-flex}.seg{color:var(--muted);background:0 0;border:0;border-radius:999px;align-items:center;gap:6px;padding:10px 22px;font-size:1.1rem;font-weight:700;display:inline-flex}.seg.small{padding:8px 14px;font-size:.95rem}.seg[aria-pressed=true]{background:var(--card);color:var(--coral-dark);box-shadow:0 2px 6px #00000014}.big{background:var(--coral);color:#fff;min-height:60px;box-shadow:0 5px 0 var(--coral-dark);border:0;border-radius:999px;justify-content:center;align-items:center;gap:10px;padding:16px 30px;font-size:1.3rem;font-weight:800;text-decoration:none;transition:transform 80ms;display:inline-flex}.big:active{box-shadow:0 2px 0 var(--coral-dark);transform:translateY(3px)}.big.ghost{background:var(--card);color:var(--coral-dark);box-shadow:0 5px 0 var(--line)}.big svg{font-size:1.2em}.home{max-width:1100px;margin:0 auto;padding:24px 16px 40px}.home-head{text-align:center;margin-bottom:24px}.home-head h1{color:var(--coral-dark);letter-spacing:.5px;margin:8px 0 0;font-size:clamp(2.2rem,7vw,3.4rem)}.tagline{color:var(--muted);margin:0;font-size:1.2rem}.home-head{flex-direction:column;align-items:center;gap:12px;display:flex}.levels{max-width:100%}.seg.level{flex-direction:column;gap:0;padding:8px 18px;line-height:1.2}.seg.level b{font-size:1.05rem}.seg.level small{opacity:.85;font-size:.8rem;font-weight:600}@media (width<=420px){.seg.level{padding:8px 12px}}.cards{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;display:grid}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);color:inherit;flex-direction:column;text-decoration:none;transition:transform .15s;display:flex;overflow:hidden}.card:hover,.card:focus-visible{transform:translateY(-3px)}.cover{aspect-ratio:3/2;background:linear-gradient(135deg, var(--sky), #fdeccc)}.cover img{object-fit:cover;width:100%;height:100%;display:block}.card-body{padding:14px 18px 18px}.card h2{margin:0;font-size:1.35rem}.sub{color:var(--muted);margin:2px 0 10px}.badges{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.star{background:var(--line);color:#c8b8a8;border-radius:999px;align-items:center;gap:3px;padding:3px 9px 3px 6px;font-size:.85rem;font-weight:800;display:inline-flex}.star.earned{color:#d99a00;background:#fff1c4}.chips{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.chip{border:2px solid var(--line);background:var(--card);color:var(--muted);border-radius:999px;padding:7px 16px;font-size:.95rem;font-weight:700}.chip[aria-pressed=true]{border-color:var(--teal);background:var(--teal);color:#fff}.topic{letter-spacing:.04em;text-transform:uppercase;background:var(--sky);color:#2a6f8f;border-radius:999px;margin-bottom:6px;padding:2px 10px;font-size:.75rem;font-weight:800;display:inline-block}.topic-nature{color:#2f7a3a;background:#e3f4e1}.topic-geography{color:#9a6400;background:#fdeccc}.topic-culture{color:#b23b3b;background:#fde3e3}.sources{color:var(--muted);text-align:left;width:100%;font-size:.85rem}.sources summary{cursor:pointer;font-weight:700}.sources a{color:var(--teal)}.resume{color:var(--teal);font-size:.85rem;font-weight:700}.foot{text-align:center;color:var(--muted);margin-top:32px;font-size:.9rem}.foot p{margin:4px 0}.story{max-width:1200px;height:100dvh;padding:10px 16px max(12px, env(safe-area-inset-bottom));grid-template-rows:auto 1fr auto;grid-template-columns:minmax(0,1fr);margin:0 auto;display:grid}.story-head{align-items:center;gap:12px;padding-bottom:8px;display:flex}.story-head h1{white-space:nowrap;text-overflow:ellipsis;flex:1;margin:0;font-size:clamp(1.1rem,3.5vw,1.6rem);overflow:hidden}.stage{grid-template-rows:minmax(0,1fr) auto;grid-template-columns:minmax(0,1fr);gap:14px;min-height:0;display:grid}.sentence,.translation{overflow-wrap:anywhere}.picture{border-radius:var(--radius);min-height:0;box-shadow:var(--shadow);background:linear-gradient(135deg, var(--sky), #fdeccc);display:flex;overflow:hidden}.scene{object-fit:cover;width:100%;height:100%;display:block}.scene.fade-in{animation:.6s fade}@keyframes fade{0%{opacity:0}}.text-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);flex-direction:column;justify-content:center;gap:10px;padding:18px 22px;display:flex}.sentence{font-size:clamp(1.5rem,4.6vw,2.3rem);font-weight:700;line-height:1.45;transition:color .2s}.sentence.long{font-size:clamp(1.25rem,3.6vw,1.9rem)}.sentence.active{color:var(--coral-dark)}.sentence.turn{color:var(--teal)}[data-lang=zh] .sentence{letter-spacing:.04em;line-height:2}.translation{color:var(--muted);font-size:clamp(1rem,2.6vw,1.2rem);line-height:1.5}ruby{vertical-align:bottom;flex-direction:column-reverse;align-items:center;width:1.45em;line-height:1.2;display:inline-flex}rt{color:var(--muted);letter-spacing:0;white-space:nowrap;font-size:.38em;font-weight:500;line-height:1.3;font-family:var(--font-zh);display:block}[data-lang=zh] .sentence{letter-spacing:0}.sentence .line.zh{display:inline}.word{font-weight:inherit;text-underline-offset:6px;background:0 0;border:0;border-radius:8px;margin:0;padding:0 1px;-webkit-text-decoration:underline dotted #0000002e;text-decoration:underline dotted #0000002e}.word:hover{background:#fff1c4}.word.pop{animation:.5s pop}@keyframes pop{40%{background:var(--sun);transform:scale(1.12)}}.story-foot{justify-items:center;gap:10px;padding-top:12px;display:grid}.status{background:var(--card);min-height:48px;box-shadow:var(--shadow);border-radius:999px;align-items:center;gap:10px;padding:8px 20px;font-size:1.25rem;font-weight:800;display:inline-flex;position:relative}.status-icon{font-size:1.4rem;display:inline-flex}.status[data-phase=speaking] .status-icon,.status[data-phase=intro] .status-icon{color:var(--coral);animation:1s ease-in-out infinite bob}.status[data-phase=your-turn]{color:var(--teal)}.status[data-phase=praise] .status-icon{color:#e0a800;animation:.6s pop}@keyframes bob{50%{transform:translateY(-3px)}}.meter{background:var(--line);border-radius:99px;width:0;height:10px;transition:width .2s;position:relative;overflow:hidden}.status[data-phase=your-turn] .meter{width:70px}.meter:after{content:"";background:var(--teal);border-radius:inherit;transform-origin:0;transform:scaleX(var(--level,0));transition:transform 80ms;position:absolute;inset:0}.status.timer .meter:after{animation:countdown var(--countdown,4s) linear forwards;transform:scaleX(1)}@keyframes countdown{to{transform:scaleX(0)}}.controls{align-items:center;gap:14px;display:flex}.ctrl{background:var(--card);width:56px;height:56px;box-shadow:var(--shadow);color:var(--ink);border:0;border-radius:50%;justify-content:center;align-items:center;font-size:1.5rem;text-decoration:none;display:inline-flex}.ctrl.primary{background:var(--coral);color:#fff;width:72px;height:72px;box-shadow:0 5px 0 var(--coral-dark);font-size:1.9rem}.ctrl.back{flex:none;width:46px;height:46px;font-size:1.3rem}.counter{text-align:center;min-width:4.5em;color:var(--muted);font-weight:800}.dots{flex-wrap:wrap;justify-content:center;gap:6px;display:flex}.dot{background:var(--line);border-radius:50%;width:10px;height:10px}.dot.on{background:var(--sun)}.overlay{z-index:10;background:#3a2e2a73;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.panel{background:var(--paper);text-align:center;border-radius:28px;justify-items:center;gap:14px;width:100%;max-width:520px;max-height:100%;padding:24px;display:grid;overflow:auto;box-shadow:0 20px 60px #00000040}.panel h2{margin:0;font-size:1.8rem}.panel-cover{aspect-ratio:3/2;object-fit:cover;background:var(--sky);border-radius:18px;width:100%}.hint{color:var(--muted);margin:0;font-size:1.1rem}.row{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.stars{color:var(--sun);gap:6px;font-size:3rem;display:flex}.stars svg{animation:.7s both pop}.stars svg:nth-child(2){font-size:1.3em;animation-delay:.15s}.stars svg:nth-child(3){animation-delay:.3s}.moral{margin:0;font-size:1.4rem;font-weight:800;line-height:1.6}.moral-sub{color:var(--muted);margin:0}@media (width>=820px) and (aspect-ratio>=5/4){.stage{grid-template-rows:minmax(0,1fr);grid-template-columns:1.25fr 1fr}}@media (width<=420px){.controls{gap:8px}.ctrl{width:50px;height:50px}.ctrl.primary{width:64px;height:64px}.story-head .seg.small{padding:8px 12px;font-size:1.15rem}.story-head .seg.small .label{clip-path:inset(50%);width:1px;height:1px;position:absolute;overflow:hidden}.text-card{padding:14px 16px}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important;animation:none!important}}