:root{--text: #1f2328;--muted: #59636e;--line: #d1d9e0;--grid: #e2e3e3;--soft: #f6f8fa;--header-bg: #f8f9fa;--accent: #0969da;--ok: #1a7f37;--warn-bg: #fff8c5;--warn-line: #d4a72c;--error: #cf222e;color-scheme:light}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;min-width:1280px;background:#fff;color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Malgun Gothic,Apple SD Gothic Neo,sans-serif;font-size:14px;line-height:1.4}button{font:inherit;padding:4px 12px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--text);cursor:pointer}button:hover:not(:disabled){background:var(--soft)}button:disabled{opacity:.6;cursor:default}button.primary{padding:8px 16px;border-color:var(--accent);background:var(--accent);color:#fff}button.primary:hover:not(:disabled){background:#0757b8}a{color:var(--accent)}.muted{color:var(--muted)}.error-text{color:var(--error)}.center-screen{display:flex;align-items:center;justify-content:center;height:100%;padding:24px}.card{min-width:360px;padding:32px;border:1px solid var(--line);border-radius:12px;text-align:center}.card h1{margin:0 0 16px;font-size:20px}.card p{margin:0 0 16px}.board-app{display:flex;flex-direction:column;height:100%}.header-bar{display:flex;align-items:center;gap:24px;padding:8px 16px;border-bottom:1px solid var(--line);background:#fff}.header-title{display:flex;align-items:baseline;gap:12px}.header-title h1{margin:0;font-size:18px}.header-date{font-size:15px;font-weight:600}.header-status{display:flex;flex:1;align-items:center;gap:16px;font-size:13px}.header-account{display:flex;align-items:center;gap:12px;font-size:13px}.connection{display:inline-flex;align-items:center;gap:6px}.connection .dot{width:8px;height:8px;border-radius:50%;background:var(--muted)}.connection-connected .dot{background:var(--ok)}.connection-disconnected{color:var(--error)}.connection-disconnected .dot{background:var(--error)}.badge{padding:1px 8px;border-radius:10px;font-size:12px}.badge-error{background:#ffebe9;color:var(--error)}.stale-banner{padding:8px 16px;border-bottom:1px solid var(--warn-line);background:var(--warn-bg);font-weight:600}.notice{margin:0;padding:16px}.toolbar{display:flex;align-items:center;gap:16px;padding:6px 16px;font-size:13px}.switch{display:inline-flex;align-items:center;gap:6px;cursor:pointer}.board-scroll{flex:1;min-height:0;overflow:auto;border-top:1px solid var(--line)}.board-table{table-layout:fixed;border-collapse:separate;border-spacing:0;font-size:12px}.board-table th,.board-table td{height:22px;padding:0 3px;border-right:1px solid var(--grid);border-bottom:1px solid var(--grid);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.board-table thead th{position:sticky;top:0;z-index:2;height:auto;padding:4px 2px;background:var(--header-bg);font-size:11px;font-weight:600;white-space:normal;word-break:break-all;text-align:center;vertical-align:bottom;border-bottom:1px solid #c0c0c0}.board-table .sticky{position:sticky;z-index:1}.board-table thead th.sticky{z-index:3}.board-table .sticky-edge{border-right:2px solid #c0c0c0}.board-table .rownum{background:var(--header-bg);color:var(--muted);font-weight:400;text-align:center}