:root{color-scheme:light;--surface: #ffffff;--page: #f9fafb;--text: #111827;--muted: #4b5563;--border: #e5e7eb;--hover: #f3f4f6;--primary: #0284c7;--primary-text: #0369a1;--primary-soft: #e0f2fe;--error: #b91c1c;--error-soft: #fef2f2;--on-primary: #ffffff;--shadow: 0 4px 20px #1118270c;--dot: #d1d5db}html.dark{color-scheme:dark;--surface: #1f2937;--page: #111827;--text: #f9fafb;--muted: #d1d5db;--border: #4b5563;--hover: #374151;--primary: #0284c7;--primary-text: #7dd3fc;--primary-soft: #0c4a6e;--error: #fca5a5;--error-soft: #421e25;--on-primary: #ffffff;--shadow: 0 4px 20px #0003;--dot: #374151}*{box-sizing:border-box}body{margin:0;font:14px/1.5 system-ui,-apple-system,Segoe UI,sans-serif;background:var(--page);color:var(--text)}button,a{font:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}button:focus-visible,a:focus-visible{outline:3px solid var(--primary-text);outline-offset:4px}h1,p{margin:0}h1{font-size:24px;line-height:1.3;letter-spacing:-.4px}.board-shell{min-height:100dvh;display:flex;flex-direction:column}.board-header{height:72px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 28px;border-bottom:1px solid var(--border);background:var(--surface)}.brand{display:flex;align-items:center;gap:12px}.logo{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:var(--primary);color:var(--on-primary);font-size:20px;font-weight:800}.wordmark{font-size:19px;font-weight:700;letter-spacing:-.5px}.brand-divider{height:24px;width:1px;background:var(--border);margin:0 6px}.header-title{font-weight:600}.button{display:inline-flex;align-items:center;justify-content:center;padding:10px 18px;min-height:44px;border:1px solid var(--border);border-radius:9px;color:var(--text);background:var(--surface);text-decoration:none}.button:hover{background:var(--hover)}.button.primary{background:var(--primary);border-color:var(--primary);color:var(--on-primary)}.button.primary:hover{filter:brightness(.94)}.theme-button{width:44px;padding:0}.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.board-stage{flex:1;display:grid;place-items:center;padding:24px 0}.state-card{width:min(460px,calc(100% - 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