:root{--bg: #f4f1ea;--surface: #ffffff;--surface-2: #f8f6f1;--text: #1f1d1a;--muted: #6b665d;--border: #e2ddd2;--accent: #b7791f;--accent-text: #ffffff;--danger: #c0392b;--ok: #2f855a;--wood: #dcb35c;--wood-line: #5a4318;--shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 4px 16px rgb(0 0 0 / 6%);color-scheme:light}@media (prefers-color-scheme: dark){:root{--bg: #16140f;--surface: #211e18;--surface-2: #2a261f;--text: #efe9dc;--muted: #a39b8b;--border: #3a3429;--accent: #e0a43a;--accent-text: #1b1405;--danger: #ff7b6b;--ok: #68d391;--wood: #cfa552;--shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 4px 16px rgb(0 0 0 / 30%);color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--text);font:15px/1.45 ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;min-height:100vh}button,input{font:inherit;color:inherit}button{border:1px solid var(--border);background:var(--surface-2);border-radius:8px;padding:6px 12px;cursor:pointer}button:hover:not(:disabled){border-color:var(--accent)}button:disabled{opacity:.55;cursor:default}button.primary{background:var(--accent);color:var(--accent-text);border-color:transparent;font-weight:600}button.primary:hover:not(:disabled){filter:brightness(1.07)}.big-btn{padding:10px 18px;font-size:16px}.ghost-btn{background:transparent;color:var(--muted)}input[type=number],input.link{border:1px solid var(--border);background:var(--surface);border-radius:8px;padding:6px 10px;min-width:0}input:focus-visible,button:focus-visible,.board:focus-visible{outline:2px solid var(--accent);outline-offset:2px}[hidden]{display:none!important}.top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--surface)}.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:20px;color:var(--text);text-decoration:none;letter-spacing:.5px}.logo{width:22px;height:22px;border-radius:5px;background:radial-gradient(circle at 34% 50%,#fff 0 5px,transparent 6px),radial-gradient(circle at 66% 50%,#000 0 5px,transparent 6px),var(--wood)}.subtitle{color:var(--muted);font-size:13px;flex:1}.home-link{color:var(--accent);text-decoration:none}main{padding:20px;max-width:1280px;margin:0 auto}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 16px;box-shadow:var(--shadow)}.hint,small{color:var(--muted);font-size:12.5px}.label-sm{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.06em}.row{display:flex;gap:8px;align-items:center}.modes{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-bottom:16px}.mode{display:flex;flex-direction:column;gap:12px}.mode h2{margin:0}.mode p{margin:0;color:var(--muted)}.mode button{align-self:flex-start;margin-top:auto}.toggle{display:flex;gap:6px;align-items:baseline;flex-wrap:wrap}.rules summary{cursor:pointer;font-weight:600}.rules ul{margin:10px 0 0;padding-left:20px}.rules li{margin:4px 0}.game{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:20px;align-items:start}@media (max-width: 900px){.game{grid-template-columns:1fr}main{padding:12px 16px}}.board-wrap{display:flex;flex-direction:column;gap:8px;min-width:0}.board{width:100%;max-height:calc(100vh - 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