:root{--felt-950: #061916;--felt-900: #08211b;--felt-850: #0b2620;--felt-800: #0f2d24;--felt-700: #14382d;--felt-600: #1b4738;--felt-500: #245844;--gold: #d9b166;--gold-bright: #eacf9c;--gold-deep: #a97f3d;--cream: #f4ede0;--cream-dim: #cfc6b4;--muted: #8fa79b;--red: #d2564a;--red-deep: #b8352c;--green: #6fbf8a;--amber: #e2b04a;--card-face: #fbf7ef;--card-edge: #ded3bd;--card-ink: #17231e;--card-red: #c0392b;--radius-s: 8px;--radius-m: 14px;--radius-l: 22px;--shadow-s: 0 2px 8px rgba(0, 0, 0, .28);--shadow-m: 0 8px 24px rgba(0, 0, 0, .34);--shadow-l: 0 18px 48px rgba(0, 0, 0, .45);--sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--serif: ui-serif, Georgia, "Iowan Old Style", "Times New Roman", serif;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--tabbar-h: 62px}*{box-sizing:border-box}html{min-height:calc(100% + 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h1{text-align:center;font-size:30px}.auth__tagline{text-align:center;color:var(--muted);font-size:13.5px;margin:6px 0 24px}.auth__note{text-align:center;margin:18px 0 0;padding:0 6px;color:var(--muted);font-size:12.5px;line-height:1.55}.closed-note{margin-top:18px;padding:13px 15px;border-radius:var(--radius-m);background:#e2b04a1a;border:1px solid rgba(226,176,74,.28);color:#f0d197;font-size:13px;text-align:center}.notice-bar{margin:0 0 14px;padding:10px 14px;border-radius:var(--radius-m);background:#e2b04a1f;border:1px solid rgba(226,176,74,.28);color:#f0d197;font-size:13px}.code-chip{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border-radius:999px;background:#0000004d;border:1px dashed rgba(217,177,102,.4);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:15px;letter-spacing:.18em;color:var(--gold-bright)}.rules-section{margin-bottom:18px}.rules-section h3{color:var(--gold-bright);margin-bottom:8px}.rules-section li{position:relative;padding-left:18px;margin-bottom:6px;font-size:13.5px;color:var(--cream-dim);line-height:1.5}.rules-section li:before{content:"";position:absolute;left:3px;top:8px;width:5px;height:5px;border-radius:50%;background:var(--gold)}.loader{display:grid;place-items:center;padding:60px 0;color:var(--muted)}.loader__spinner{width:26px;height:26px;border-radius:50%;border:2px solid rgba(217,177,102,.25);border-top-color:var(--gold);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.sudoku{margin-top:12px}.sudoku__head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}.sudoku__clock{font-family:var(--serif);font-size:26px;color:var(--gold-bright);line-height:1}.sudoku__progress{position:relative;display:flex;align-items:center;justify-content:flex-end;gap:8px;min-width:92px;height:20px;padding:0 8px;border-radius:999px;background:#00000047;overflow:hidden}.sudoku__progress-bar{position:absolute;inset:0 auto 0 0;background:linear-gradient(90deg,#d9b16659,#d9b1668c);transition:width .3s ease}.sudoku__progress .tiny{position:relative}.sudoku__panel{padding:10px}.sudoku__grid{display:grid;grid-template-columns:repeat(var(--sudoku-n),1fr);width:100%;max-width:min(100%,540px);margin:0 auto;aspect-ratio:1;border:2px solid var(--gold-deep);border-radius:var(--radius-s);overflow:hidden;background:var(--felt-900);font-size:clamp(9px,calc(min(100vw - 40px,540px) / var(--sudoku-n) * .52),24px)}.sudoku__cell{display:grid;place-items:center;padding:0;border:0;border-right:1px solid rgba(217,177,102,.16);border-bottom:1px solid rgba(217,177,102,.16);background:#f4ede00a;color:var(--cream);font:inherit;line-height:1;transition:background-color .12s ease;min-width:0;overflow:hidden}.sudoku__cell.is-box-right{border-right:2px solid rgba(217,177,102,.5)}.sudoku__cell.is-box-bottom{border-bottom:2px solid rgba(217,177,102,.5)}.sudoku__cell.is-given{background:#f4ede01c;color:var(--cream);font-weight:700}.sudoku__cell:not(.is-given) .sudoku__value{color:var(--gold-bright)}.sudoku__cell.is-peer{background:#d9b1661a}.sudoku__cell.is-twin{background:#d9b16633}.sudoku__cell.is-selected{background:#d9b16657;box-shadow:inset 0 0 0 2px var(--gold)}.sudoku__cell.is-wrong .sudoku__value{color:#f0a79f}.sudoku__cell.is-wrong{background:#d2564a33}.sudoku__value{font-variant-numeric:tabular-nums}.sudoku__notes{display:grid;grid-template-columns:repeat(var(--sudoku-note-cols),1fr);gap:0;width:100%;height:100%;padding:1px;place-items:center;font-size:.46em;line-height:1;color:var(--muted)}.sudoku__pad{margin-top:14px}.sudoku__keys{display:grid;grid-template-columns:repeat(var(--sudoku-keys),1fr);gap:6px}.sudoku__key{padding:12px 0;border:1px solid rgba(217,177,102,.3);border-radius:var(--radius-s);background:#f4ede012;color:var(--cream);font-family:var(--serif);font-size:19px;font-variant-numeric:tabular-nums;transition:background-color .12s ease,transform .08s ease}.sudoku__key:active{transform:scale(.94)}.sudoku__key:disabled{opacity:.35}.sudoku__key.is-complete{opacity:.3}.sudoku__tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:12px}.sudoku__help{margin-top:10px}.sudoku__wait{margin-top:16px}.sudoku__race{margin-bottom:12px}.sudoku__racer{display:flex;align-items:center;gap:10px}.sudoku__racer-body{flex:1;min-width:0}.sudoku__racer-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sudoku__track{height:6px;margin-top:5px;border-radius:999px;background:#0000004d;overflow:hidden}.sudoku__track-bar{height:100%;border-radius:999px;background:var(--gold-deep);transition:width .3s ease}.sudoku__track-bar.is-done{background:var(--green)}@media(min-width:640px){.sudoku__key{padding:14px 0;font-size:21px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}