:root{--bg:#f4f6f9;--surface:#fff;--line:#e5e8ed;--line-strong:#d6dbe3;--text:#1f2733;--text-soft:#5c6674;--text-muted:#8b93a0;--accent:#2563eb;--accent-hover:#1d4fd8;--accent-soft:#2563eb2e;--a-color:#16a34a;--b-color:#ea580c;--row-bg:#f2f4f8;--win-bg:#e8f8ee;--win-line:#b4e3c6;--excluded-bg:#eceef2;--excluded-text:#a3aab5;--required-bg:#e3f6ea;--required-text:#147a3d;--required-line:#a9dfbf;--impossible-bg:#eceef2;--impossible-text:#9aa2ad;--confirmed-bg:#e3f6ea;--confirmed-text:#147a3d;--confirmed-line:#a9dfbf;--error:#d92d20;--mono:ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:Noto Sans TC,PingFang TC,Microsoft JhengHei,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica 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.12s}.pos-cell.is-possible{border:1px solid var(--line-strong);background:var(--surface);color:#0000}.pos-cell.is-possible:hover{background:#fafbfc;border-color:#b9c0cb}.pos-cell.is-impossible{background:var(--impossible-bg);color:var(--impossible-text);border:1px solid #0000}.pos-cell.is-confirmed{border:1px solid var(--confirmed-line);background:var(--confirmed-bg);color:var(--confirmed-text)}.legend{color:var(--text-muted);flex-wrap:wrap;gap:16px;margin-top:12px;font-size:13px;display:flex}.legend-item{align-items:center;gap:6px;display:inline-flex}.legend-swatch{border-radius:4px;width:13px;height:13px}.legend-swatch.is-unknown,.legend-swatch.is-possible{border:1px solid var(--line-strong);background:var(--surface)}.legend-swatch.is-excluded,.legend-swatch.is-impossible{background:var(--excluded-bg);border:1px solid #dfe3e9}.legend-swatch.is-required,.legend-swatch.is-confirmed{background:var(--required-bg);border:1px solid 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