:root{--bg: #f5f0e6;--surface: #fbf8f1;--ink: #1c1c1c;--muted: #6b645a;--border: #e3dacb;--accent: #b23a2b;--accent-ink: #fbf8f1;--ok: #4f7c5c;--ok-bg: #e4ede3;--bad: #a34a3a;--bad-bg: #f3e1dc;--shadow: 0 1px 2px rgb(60 40 20 / 6%), 0 8px 24px rgb(60 40 20 / 8%);--font-ui: "Inter", system-ui, sans-serif;--font-serif: "Noto Serif", Georgia, serif;--font-hanzi: "Noto Serif SC", "Songti SC", serif;--el-wood: #357a31;--el-fire: #c2362a;--el-earth: #806418;--el-metal: #6e737a;--el-water: #5f4fd6;--paper: #fffdf8;--grid: #d8cdb9;--outline: #ddd1bc;color-scheme:light}:root[data-theme=dark]{--bg: #161514;--surface: #211f1c;--ink: #ede6d6;--muted: #9a9284;--border: #34302a;--accent: #d2574a;--accent-ink: #161514;--ok: #7fae8a;--ok-bg: #22302a;--bad: #d27a6a;--bad-bg: #3a2522;--shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 8px 24px rgb(0 0 0 / 30%);--el-wood: #74b86c;--el-fire: #e3685b;--el-earth: #d2ad4a;--el-metal: #c9cdd2;--el-water: #9d92ff;--paper: #1b1a18;--grid: #4a443b;--outline: #4b453c;color-scheme:dark}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100dvh;background:var(--bg);color:var(--ink);font-family:var(--font-ui);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}h1,h2{font-family:var(--font-serif);font-weight:600;margin:0}h1{font-size:2rem}h2{font-size:1rem}button{font:inherit;color:inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.muted{color:var(--muted);margin:0}.hanzi{font-family:var(--font-hanzi)}.screen{max-width:480px;margin:0 auto;padding:24px 16px 32px;display:flex;flex-direction:column;gap:20px}.panel{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:12px}.panel__head{display:flex;justify-content:space-between;align-items:baseline}.btn{border:1px solid var(--border);background:var(--surface);border-radius:12px;padding:14px 20px;font-weight:600;transition:transform .1s,background .15s}.btn:active:not(:disabled){transform:scale(.98)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn--primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.btn--ghost{background:transparent;border-color:transparent;color:var(--muted)}.btn--wide{width:100%}.link{background:none;border:none;padding:0;color:var(--accent);font-size:.875rem}.icon-btn{width:36px;height:36px;border-radius:50%;border:none;background:transparent;font-size:1.25rem;color:var(--muted);flex:none}.icon-btn:hover{background:var(--surface)}.start__hero{text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px 0 8px}.start__glyphs{font-size:1.75rem;letter-spacing:.15em;color:var(--accent);margin-bottom:4px}.player{width:100%;display:flex;flex-direction:column;align-items:center;gap:8px}.player__stage{width:100%;display:flex;justify-content:center}.grid-cell{border:1.5px solid var(--grid);border-radius:4px;background:var(--paper)}.grid-cell--miss{animation:miss .35s ease-out}.writer{width:100%;height:100%;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.player__status.is-ok{color:var(--ok);font-weight:600}.player__status.is-bad{color:var(--bad);font-weight:600}.mistakes__char{display:flex;align-items:center;gap:12px}.mistakes__hanzi{font-size:2rem;line-height:1;color:var(--el)}.player__status{margin:0;font-size:.8125rem;color:var(--muted);font-variant-numeric:tabular-nums}.player__controls{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:100%}.player__controls .btn--small{align-self:stretch;padding:10px 4px}.info{display:flex;flex-direction:column;align-items:center;gap:8px}.info p{margin:0}.info__reading{display:flex;align-items:baseline;gap:10px}.info__ru{font-family:var(--font-serif);font-size:1.75rem;font-weight:600}.info__pinyin{color:var(--muted);font-size:1.125rem}.info__tags{display:flex;flex-wrap:wrap;justify-content:center;gap:6px}.tag{border:1px solid var(--border);border-radius:999px;padding:2px 12px;font-size:.875rem;font-weight:500}.tag[class*=el-]{border-color:var(--el);color:var(--el)}.info__kind{font-size:.8125rem}.tag--muted{color:var(--muted)}.ask__hanzi{font-size:7rem;line-height:1.1}.ask__hanzi.is-colored{font-size:5rem;color:var(--el)}.ask__big{font-family:var(--font-serif);font-size:2.75rem;font-weight:600}.answer__hanzi{font-size:2.75rem;font-weight:400;line-height:1}.answer__text{display:flex;flex-direction:column;align-items:center;line-height:1.2}.answer__sub{font-family:var(--font-ui);font-size:.8125rem;font-weight:500;color:var(--muted)}.ask{display:flex;flex-direction:column;align-items:center;gap:8px}.ask p{margin:0}.ask__reading{display:flex;align-items:baseline;gap:10px}.segmented.segmented--4{grid-template-columns:repeat(2,1fr)}.segmented button:disabled{opacity:.45;cursor:not-allowed}.el-wood{--el: var(--el-wood)}.el-fire{--el: var(--el-fire)}.el-earth{--el: var(--el-earth)}.el-metal{--el: var(--el-metal)}.el-water{--el: var(--el-water)}.checks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}.check{display:flex;align-items:center;gap:12px;padding:8px 4px;cursor:pointer}.check input{width:18px;height:18px;accent-color:var(--accent);margin:0}.segmented{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;background:var(--bg);border-radius:10px;padding:4px}.segmented button{border:none;background:transparent;border-radius:8px;padding:8px;font-weight:500;color:var(--muted)}.segmented button.is-on{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}.hint{text-align:center;color:var(--muted);font-size:.875rem;margin:-8px 0 0}.panel__note{margin:0;font-size:.8125rem;color:var(--muted)}.btn--small{padding:8px 12px;font-size:.875rem;font-weight:500;align-self:center}.bar{display:block;height:6px;background:var(--border);border-radius:3px;overflow:hidden}.bar--small{height:4px;width:56px}.bar__fill{display:block;height:100%;background:var(--accent);transition:width .3s ease}.decks{list-style:none;margin:0 -8px;padding:0;display:flex;flex-direction:column;gap:2px}.deck{width:100%;display:flex;align-items:center;gap:12px;padding:10px 8px;border:1px solid transparent;border-radius:10px;background:transparent;text-align:left}.deck:hover:not(:disabled){background:var(--bg)}.deck.is-on{border-color:var(--accent);background:var(--bg)}.deck:disabled{cursor:not-allowed;opacity:.5}.deck__main{flex:1;min-width:0;display:flex;flex-direction:column}.deck__title{font-weight:600}.deck__sub{font-size:.8125rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.deck__progress{display:flex;flex-direction:column;align-items:flex-end;gap:4px;flex:none}.deck__pct{font-size:.8125rem;font-variant-numeric:tabular-nums;color:var(--muted)}.deck__lock{flex:none;font-size:.875rem}.quiz__top{display:flex;align-items:center;gap:12px}.progress{flex:1;height:6px;background:var(--border);border-radius:3px;overflow:hidden}.progress__fill{height:100%;background:var(--accent);transition:width .3s ease}.quiz__count{font-variant-numeric:tabular-nums;color:var(--muted);font-size:.875rem;min-width:3.5em;text-align:right}.card{background:var(--surface);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow);min-height:280px;padding:32px 20px 20px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;text-align:center;animation:card-in .28s ease-out;transition:border-color .2s,background .2s}.card--ok{border-color:var(--ok)}.card--bad{border-color:var(--bad)}.card__ask{flex:1;display:flex;align-items:center;justify-content:center}.card__prompt{margin:0;color:var(--muted);font-size:.9375rem}.answers{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.answer{position:relative;min-height:64px;padding:14px 12px;border:1px solid var(--border);background:var(--surface);border-radius:14px;display:flex;align-items:center;justify-content:center;font-family:var(--font-serif);font-size:1.125rem;font-weight:600;transition:background .15s,border-color .15s,opacity .2s,transform .1s}.answers--glyphs .answer{min-height:96px}.answer:hover:not(:disabled){border-color:var(--muted)}.answer:active:not(:disabled){transform:scale(.97)}.answer:disabled{cursor:default}.answer__key{position:absolute;top:6px;left:10px;font-family:var(--font-ui);font-size:.6875rem;font-weight:500;color:var(--muted);opacity:.7}.answer__mark{position:absolute;top:4px;right:10px;font-family:var(--font-ui);font-size:1rem}.answer--ok{background:var(--ok-bg);border-color:var(--ok);color:var(--ok);animation:pulse .35s ease-out}.answer--bad{background:var(--bad-bg);border-color:var(--bad);color:var(--bad);animation:shake .35s ease-in-out}.answer--dim{opacity:.4}.quiz__footer{min-height:52px}.card--study{min-height:380px;padding:16px 12px 20px;gap:16px;touch-action:pan-y;-webkit-user-select:none;user-select:none}.study__nav{display:grid;grid-template-columns:1fr 1fr;gap:12px}.study .hint{margin:0}.result__score{text-align:center;padding:24px 0 8px}.result__pct{font-family:var(--font-serif);font-size:4rem;font-weight:600;line-height:1.1;color:var(--accent)}.result__perfect{text-align:center;font-family:var(--font-serif);font-size:1.25rem;margin:0}.result__actions{display:flex;flex-direction:column;gap:8px}.mistakes{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}.mistakes li{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-top:1px solid var(--border)}.mistakes li:first-child{border-top:none}.mistakes__count{color:var(--bad);font-weight:600;font-variant-numeric:tabular-nums}.result__mastery-row{display:flex;justify-content:space-between;gap:12px;font-size:.9375rem}.result__mastery-row strong{font-variant-numeric:tabular-nums;white-space:nowrap}.result__unlocked{margin:0;color:var(--ok);font-weight:600}@keyframes card-in{0%{opacity:0;transform:translateY(8px) scale(.98)}}@keyframes pulse{50%{transform:scale(1.04)}}@keyframes miss{0%{border-color:var(--bad);box-shadow:0 0 0 3px var(--bad-bg)}}@keyframes shake{20%,60%{transform:translate(-4px)}40%,80%{transform:translate(4px)}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation:none!important;transition:none!important}}