:root{--bg: #f7f4f4;--surface: #ffffff;--text: #1b2423;--muted: #5f6b69;--line: #dce3e1;--accent: #9b2f5a;--accent-soft: #f6e3ea;--good: #2f7a4b;--warn: #a86a12;--paper: #ffffff;--grid: #c9dedb;--ink: #1b2423;--outline: #dce3e1;color-scheme:light}@media (prefers-color-scheme: dark){:root{--bg: #121716;--surface: #1b2221;--text: #e6eeec;--muted: #97a5a2;--line: #2d3836;--accent: #ee93b6;--accent-soft: #3a1d29;--good: #6cc08d;--warn: #e0a54a;--paper: #1b2221;--grid: #2a4541;--ink: #e6eeec;--outline: #2d3836;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,PingFang SC,Hiragino Sans,Noto Sans CJK SC,sans-serif;line-height:1.5;-webkit-text-size-adjust:100%}a{color:var(--accent)}.page{max-width:560px;margin:0 auto;padding:20px 16px 48px}.muted{color:var(--muted)}.small{font-size:.875rem}.masthead h1{margin:8px 0 4px;font-size:1.75rem;letter-spacing:-.01em}.masthead p{margin:0 0 20px}.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border:none;border-radius:999px;background:var(--accent);color:#fff;font:inherit;font-weight:600;text-decoration:none;cursor:pointer}.button.secondary{background:transparent;color:var(--text);border:1px solid var(--line)}.switches{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.segmented{display:inline-flex;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:3px}.segmented button{min-height:40px;padding:0 14px;border:none;border-radius:999px;background:transparent;color:var(--text);font:inherit;cursor:pointer}.segmented button.active{background:var(--accent);color:#fff}.segmented button.active .muted{color:#fffc}.error{border-color:var(--accent);margin-bottom:16px}.error p{margin-top:0}.streak{margin-bottom:24px}.streak-top{display:flex;justify-content:space-between;align-items:flex-end;gap:16px}.streak-number{font-size:2.75rem;font-weight:700;line-height:1;color:var(--accent);font-variant-numeric:tabular-nums}.streak-facts{text-align:right;font-size:.9rem}.history{display:grid;grid-template-columns:repeat(14,1fr);gap:4px;height:40px;margin:16px 0 8px;align-items:end}.history-day{height:100%;display:flex;align-items:flex-end}.history-bar{width:100%;border-radius:3px;background:var(--line)}.history-bar.on{background:var(--accent)}.streak-note{margin:0;font-size:.9rem;color:var(--muted)}.section-title{font-size:1.1rem;margin:0 0 12px}.decks{display:grid;gap:12px}.deck{display:flex;gap:14px;align-items:center;color:inherit;text-decoration:none}.deck:hover{border-color:var(--accent)}.deck-preview{flex:none;width:72px;height:72px;display:grid;place-items:center;overflow:hidden;background:var(--accent-soft);border-radius:12px;color:var(--accent)}.deck-body{flex:1;min-width:0}.deck-title{font-weight:600}.meter{height:6px;background:var(--line);border-radius:3px;margin:8px 0 4px;overflow:hidden}.meter div{height:100%;background:var(--good)}.due{color:var(--warn)}.lock-note{margin-top:8px;font-weight:600;color:var(--accent)}.footer{margin-top:32px;text-align:center}.practice{padding-top:12px}.topbar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:44px}.back{display:inline-flex;align-items:center;min-height:44px;color:var(--text);text-decoration:none;font-weight:500}.topbar-title{font-weight:600;text-align:center}.topbar-count{text-align:right;color:var(--muted);font-variant-numeric:tabular-nums}.progress-track{height:4px;background:var(--line);border-radius:2px;overflow:hidden;margin:4px 0 16px}.progress-track div{height:100%;background:var(--accent);transition:width .3s}.prompt{text-align:center;margin-bottom:12px}.mode-tag{display:inline-block;font-size:.8rem;font-weight:600;padding:2px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent)}.mode-tag.recall{background:var(--line);color:var(--text)}.reading{font-size:1.9rem;font-weight:600;margin-top:6px;line-height:1.2}.meaning{color:var(--muted)}.status-row{display:flex;justify-content:space-between;max-width:380px;margin:10px auto 0;font-size:.9rem;font-variant-numeric:tabular-nums}.slips{color:var(--warn)}.actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:16px}.outcome{text-align:center;margin-top:12px}.outcome p{margin:0 0 12px;font-weight:500}.outcome.perfect p{color:var(--good)}.outcome.missed p{color:var(--warn)}.outcome .button{min-width:160px}.summary{text-align:center}.summary h2{margin-top:4px}.browse{text-align:center;margin-top:24px}.browse a{display:inline-flex;align-items:center;min-height:44px;font-weight:600}.browse-links{margin-top:4px}.streak-inline{font-weight:700;color:var(--accent);font-size:1.2rem}.footer-links{display:flex;justify-content:center;flex-wrap:wrap;gap:4px 20px;margin-bottom:8px}.footer-links a{display:inline-flex;align-items:center;min-height:44px;color:var(--text);font-size:.95rem}.text-page h1{font-size:1.9rem;margin:8px 0 12px}.text-page h2{font-size:1.15rem;margin:28px 0 8px}.text-page h3{font-size:1rem;margin:18px 0 6px}.text-page ul{padding-left:1.2em}.text-page li{margin-bottom:6px}.text-page code{font-size:.9em;background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:0 4px}.contact h2{margin-top:0}.contact .button{max-width:100%;white-space:normal;text-align:center}.account{margin-bottom:16px}.account.card{display:grid;gap:10px}.account .muted.small{margin:2px 0 0}.account-name{font-weight:600}.account-actions{display:flex;flex-direction:column;align-items:flex-start;gap:6px}.account-fallback{display:inline-flex;align-items:center;min-height:40px}.account-terms{margin:0}.account-error{color:var(--accent);margin:0}.account.signed-in{display:flex;align-items:center;gap:12px;padding:8px 12px;background:var(--surface);border:1px solid var(--line);border-radius:16px}.account.signed-in img{border-radius:50%;flex:none}.account-who{flex:1;min-width:0}.account-who .account-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account.signed-in .button{min-height:40px;padding:0 14px;flex:none}.site-header{display:flex;justify-content:space-between;align-items:center;max-width:560px;margin:0 auto;padding:12px 16px 0}.site-header a{display:inline-flex;align-items:center;min-height:44px;color:var(--text);text-decoration:none}.site-header .brand{font-weight:700;color:var(--accent);white-space:nowrap}.crumbs a{color:var(--muted)}.site-nav{display:flex;gap:12px;font-size:.95rem}@media (max-width: 400px){.site-header{gap:8px}.site-nav{gap:10px;font-size:.85rem}}.try{margin-top:8px}.cta{margin-top:28px}.cta h2{margin-top:0}.task-line{font-size:1.15rem;font-weight:600;margin:8px 0 0}.answer-line{text-align:center;margin:0 0 12px}.note{text-align:center;color:var(--muted);margin:0 0 12px}.skill-blurb{align-self:center}.choices{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}.choice{min-height:56px;border-radius:14px;border:1px solid var(--line);background:var(--surface);color:var(--text);font:inherit;font-size:1.35rem;font-weight:700;cursor:pointer}.choice:hover:not(:disabled){border-color:var(--accent)}.choice.wrong{opacity:.4;text-decoration:line-through}.choice.right{border-color:var(--good);color:var(--good);box-shadow:0 0 0 2px var(--good)}.slip{text-align:center;color:var(--warn);margin:0 0 8px}kbd{display:inline-block;min-width:1.6em;padding:0 4px;border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;background:var(--surface);font:600 .8rem/1.5 system-ui,sans-serif;text-align:center}.cta .actions{justify-content:flex-start}.choices.wide{grid-template-columns:1fr}.choices.wide .choice{font-size:1.1rem;font-weight:600;min-height:52px;padding:8px 14px}.deck.locked{opacity:.6}.deck-hint{margin:-6px 0 12px}.mouth path{fill:none;stroke:currentColor;stroke-width:3;stroke-linejoin:round}.mouth .inside{fill:currentColor;fill-opacity:.25;stroke-width:0}.clip-stage{position:relative;width:100%;max-width:420px;margin:0 auto 10px;aspect-ratio:16 / 9;border-radius:16px;overflow:hidden;background:#000}.clip-stage video{width:100%;height:100%;object-fit:cover;display:block;cursor:pointer}.clip-replay{position:absolute;top:0;right:0;bottom:0;left:0;margin:auto;width:72px;height:72px;border-radius:50%;border:none;background:#0000008c;color:#fff;font-size:1.8rem;cursor:pointer}.clip-error{position:absolute;inset:auto 0 0;margin:0;padding:10px;background:#000000b3;color:#fff;text-align:center}.clip-tools{display:flex;gap:8px;justify-content:center;margin-bottom:14px;flex-wrap:wrap}.clip-tools .button{min-height:44px;padding:0 14px}.button.secondary.on{border-color:var(--accent);color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.studio{max-width:900px}.studio-setup{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}.studio-setup label{display:grid;gap:4px;font-weight:600;font-size:.9rem}.studio-setup input{font:inherit;padding:8px 10px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text)}.studio-stage{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:16px;align-items:start}.studio-video{position:relative;aspect-ratio:4 / 3;background:#000;border-radius:16px;overflow:hidden}.studio-video video{width:100%;height:100%;object-fit:cover;display:block}.studio-video video.mirror{transform:scaleX(-1)}.studio-video video.hidden{display:none}.studio-guide{position:absolute;left:30%;width:40%;top:58%;height:26%;border:2px dashed rgba(255,255,255,.85);border-radius:40%;pointer-events:none}.studio-guide span{position:absolute;top:100%;left:0;right:0;text-align:center;color:#fff;font-size:.75rem;text-shadow:0 1px 3px #000;margin-top:4px}.studio-count{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;font-size:6rem;font-weight:800;color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.6)}.studio-rec{position:absolute;top:10px;left:12px;color:#ff4d4d;font-weight:800}.studio-say{font-size:2rem;font-weight:800;margin:6px 0;line-height:1.2}.studio-script .actions{justify-content:flex-start}.studio-clips{padding-left:1.2em}.studio-clips li{margin-bottom:4px}.link-button{background:none;border:none;color:var(--muted);text-decoration:underline;cursor:pointer;font:inherit;margin-left:8px}.studio-tips{margin:16px 0;padding-left:1.2em}.studio-deck h3{font-size:1rem;margin:18px 0 8px}.studio-items{display:flex;flex-wrap:wrap;gap:6px}.studio-item{position:relative;padding:6px 10px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--text);font:inherit;font-size:.9rem;cursor:pointer}.studio-item.done{color:var(--good);border-color:var(--good)}.studio-item.current{box-shadow:0 0 0 2px var(--accent)}.studio-n{margin-left:6px;font-size:.75rem;color:var(--muted)}@media (max-width: 640px){.studio-stage,.studio-setup{grid-template-columns:1fr}}.shape-table{width:100%;border-collapse:collapse;margin:8px 0 16px}.shape-table th,.shape-table td{text-align:left;padding:8px;border-bottom:1px solid var(--line);vertical-align:top}.shape-table th{font-size:.85rem;color:var(--muted)}.button kbd{background:transparent;color:inherit;border-color:currentColor;opacity:.75;margin-left:6px}@media (hover: none){.button kbd{display:none}}