:root{font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color-scheme:light dark;--surface: #ffffff;--ink-strong: #202323;--ink-muted: #626767;--line: #dde0df;--tile-border: #c3c8c6;--tile-active: #737c77;--key-default: #d8dcda;--key-ink: #202323;--correct: #487c4e;--accent: #487c4e;--present: #8a701b;--absent: #656a68;--soft: #f4f6f4;--page-max: 960px;--page-pad: 24px;color:var(--ink-strong);background:var(--surface);font-synthesis:none;text-rendering:optimizeLegibility}@media(prefers-color-scheme:dark){:root{--surface: #121514;--ink-strong: #f2f4f3;--ink-muted: #a4ada8;--line: #303732;--tile-border: #444d47;--tile-active: #929d95;--key-default: #88918c;--key-ink: #101512;--correct: #47794d;--accent: #92c398;--present: #887019;--absent: #414944;--soft: #1c231e}}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button{cursor:pointer;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--ink-strong);padding:11px 16px;min-height:44px}button:disabled{cursor:default;opacity:.5}:focus-visible{outline:3px solid var(--correct);outline-offset:4px}main{min-height:65dvh}header{display:flex;align-items:center;justify-content:space-between;width:min(100%,var(--page-max));margin:auto;height:72px;padding:0 var(--page-pad);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:baseline;gap:12px}.brand span{font-size:1.4rem;font-weight:850;letter-spacing:.08em}.brand small,.muted,.footnote{color:var(--ink-muted)}.header-actions{display:flex;gap:8px;flex-shrink:0}.icon-button{display:grid;place-items:center;width:44px;height:44px;padding:0}.icon-button svg{width:22px;height:22px}.icon-button [data-header-icon]{display:grid;place-items:center}.icon-button:not(:disabled):hover{background:var(--soft)}.icon-button:not(:disabled):active{background:var(--key-default)}.setup{max-width:640px;margin:0 auto;padding:clamp(28px,5dvh,52px) var(--page-pad) 24px}.setup .eyebrow{margin:0 0 12px;font-size:.75rem;letter-spacing:.08em}.setup h1{font-size:clamp(1.375rem,3.6vw,1.75rem);line-height:1.4;letter-spacing:-.025em;margin:0 0 12px;font-weight:750}.setup .muted{font-size:.9375rem;line-height:1.8;margin:0}.setup fieldset{margin:0}.setup legend{font-size:.8125rem;margin-bottom:12px}.setup .lengths{gap:8px}.setup .lengths label{min-height:70px;padding:10px 4px;border-width:1px;border-radius:8px;font-size:1.25rem;font-variant-numeric:tabular-nums;transition:background .16s,border-color .16s}.setup .lengths label:hover{border-color:var(--correct)}.setup .lengths small{font-size:.75rem}.setup-start{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:48px;font-size:.9375rem;border-radius:8px}.setup-start:not(:disabled):hover{filter:brightness(1.08)}.setup .footnote{font-size:.75rem;margin:16px 0 0}@media(max-width:480px){.setup{padding:24px var(--page-pad)}.setup .lengths{grid-template-columns:repeat(3,minmax(0,1fr))}.setup .lengths.counts{grid-template-columns:repeat(2,minmax(0,1fr))}}.eyebrow{color:var(--accent);font-size:.8rem;font-weight:700;letter-spacing:.13em}h1{font-size:clamp(1.6rem,5vw,2.2rem);letter-spacing:-.04em;margin:14px 0}p{line-height:1.7}fieldset{padding:0;border:0;margin:30px 0}legend{font-size:.85rem;margin-bottom:12px;font-weight:650}.lengths{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.lengths.counts{grid-template-columns:repeat(4,1fr)}.lengths label{position:relative;display:grid;justify-items:center;padding:14px 4px;gap:3px;border:2px solid var(--line);border-radius:6px;font-size:1.3rem;font-weight:750;cursor:pointer;background:var(--soft)}.lengths small{font-size:.65rem;color:var(--ink-muted);font-weight:400}.lengths input{position:absolute;opacity:0;width:100%;height:100%;top:0;right:0;bottom:0;left:0;margin:0;cursor:pointer}.lengths .chosen{border-color:var(--correct);background:var(--correct);color:#fff}.lengths .chosen small{color:#fff}.lengths label:has(:focus-visible){outline:3px solid var(--correct);outline-offset:3px}.primary{background:var(--correct);color:#fff;border-color:var(--correct);font-weight:700}.setup>.primary{width:100%}.footnote{font-size:.75rem;text-align:center;margin-top:24px}.game-shell{display:grid;justify-items:center;width:min(100%,var(--page-max));margin:0 auto;padding:16px var(--page-pad) max(20px,env(safe-area-inset-bottom))}.game-meta{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:620px;margin-bottom:12px;font-size:.8rem;color:var(--ink-muted)}.message{min-height:24px;font-size:.9rem;font-weight:650;text-align:center;margin:12px 0}.result{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:16px;margin-bottom:16px}.result p{margin:0}.result strong{letter-spacing:.08em}.error{color:var(--ink-strong);font-size:.9rem;border-left:3px solid var(--present);padding-left:12px}dialog{background:var(--surface);color:var(--ink-strong);border:1px solid var(--line);border-radius:12px;padding:24px;width:min(480px,calc(100% - 32px));max-height:calc(100dvh - 40px)}dialog::backdrop{background:#0009}dialog h2{margin-top:0}dialog p,.instructions{font-size:.9rem}.instructions{padding:0;list-style:none}.instructions li{display:flex;align-items:center;gap:10px;margin:12px 0}.swatch{display:inline-block;width:24px;height:24px;flex-shrink:0}.swatch.correct{background:var(--correct)}.swatch.present{background:var(--present)}.swatch.absent{background:var(--absent)}.actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}@media(max-width:380px){.lengths{grid-template-columns:repeat(3,1fr)}.brand{flex-direction:column;gap:0}.header-actions{gap:4px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important}}a{color:var(--accent);text-underline-offset:4px}.site-header{height:72px;gap:12px}.site-header .brand{flex-direction:row;align-items:center;text-decoration:none;color:var(--ink-strong)}.brand img{flex-shrink:0}.site-nav{display:flex;flex-wrap:wrap;gap:4px}.site-nav a{display:inline-flex;align-items:center;min-height:44px;padding:8px 10px;border-radius:6px;font-size:.875rem;color:var(--ink-muted);text-decoration:none}.site-nav a:hover,.site-nav a[aria-current=page]{color:var(--accent);background:var(--soft)}.page-intro{width:min(100%,var(--page-max));margin:auto;padding:32px var(--page-pad) 12px}.page-intro>p{max-width:640px}.game-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:32px 0}.game-card{display:flex;flex-direction:column;padding:28px;border:1px solid var(--line);border-radius:14px;color:var(--ink-strong);text-decoration:none;background:var(--soft)}.game-card:hover{border-color:var(--correct)}.game-card h2{font-size:1.4rem;margin:18px 0 4px}.game-card p{color:var(--ink-muted)}.card-action{margin-top:auto;padding-top:20px;color:var(--accent);font-weight:650}.reading{width:min(100%,var(--page-max));margin:28px auto;padding:0 var(--page-pad)}.page-intro>.reading{max-width:none;padding:0}.reading h2{font-size:1.2rem;margin-top:32px}.reading p{color:var(--ink-muted)}.feedback-examples{display:grid;gap:24px;margin-top:20px}.feedback-example{margin:0}.example-word{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;width:min(100%,314px);margin-bottom:12px}.example-tile{display:flex;align-items:center;justify-content:center;aspect-ratio:1;border:2px solid var(--tile-border);color:var(--ink-strong);font-size:clamp(1.5rem,6vw,2rem);font-weight:750;line-height:1}.example-tile.correct{background:var(--correct);border-color:var(--correct);color:#fff}.example-tile.present{background:var(--present);border-color:var(--present);color:#fff}.example-tile.absent{background:var(--absent);border-color:var(--absent);color:#fff}.feedback-example figcaption>strong{font-size:.9375rem}.feedback-example p{margin:4px 0 0}.game-toolbar{display:flex}.site-header .icon-button{border:1px solid var(--line);border-radius:6px;color:var(--ink-strong);text-decoration:none;flex-shrink:0}#header-actions{flex-shrink:0}.game-description h1{font-size:1.4rem}.setup{padding-top:20px}.setup fieldset{margin-bottom:24px}.skip-link{position:absolute;top:-100px;left:16px;padding:12px;background:var(--surface);z-index:10}.skip-link:focus{top:8px}@media(max-width:600px){:root{--page-pad: 16px}.site-header .brand{gap:8px}.site-header .brand img{width:28px;height:28px}.site-header .brand small{display:none}.site-nav{width:100%;justify-content:space-between}.site-nav a{padding:8px}.page-intro{padding:24px var(--page-pad) 8px}.game-cards{grid-template-columns:1fr;gap:16px;margin-top:24px}.game-card{padding:24px}}