:root{--bg:#eef0f4;--panel:#fff;--card:#f7f8fa;--fg:#1b1d22;--muted:#6b7280;--line:#e3e6eb;--acc:#4f46e5;--acc-2:#7c3aed;--acc-soft:#eef2ff;--on-acc:#fff;--checker:#00000010;--shadow:0 1px 2px #0000000d, 0 8px 24px #0000000f;--radius:12px}@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--panel:#171a20;--card:#1e222a;--fg:#e7e9ee;--muted:#9097a3;--line:#2a2f38;--acc:#818cf8;--acc-2:#a78bfa;--acc-soft:#262a46;--on-acc:#0f1115;--checker:#ffffff0a;--shadow:0 1px 2px #0006, 0 8px 24px #0005}}*{box-sizing:border-box}body{background:var(--bg);color:var(--fg);margin:0;font:14px/1.5 system-ui,-apple-system,Segoe UI,Microsoft YaHei,sans-serif}.app{flex-direction:column;height:100dvh;display:flex}a{color:var(--acc)}svg{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round}.topbar{background:var(--panel);border-bottom:1px solid var(--line);grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;padding:10px 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