:root{--bg: #f8fafa;--surface: #ffffff;--ink: #1a2323;--muted: #5c6b6a;--line: #dce5e4;--accent: #0f766e;--accent-soft: #e4f1ef;--ok: #15803d;--warn: #b45309;--warn-soft: #fdf3e4;--bad: #b91c1c;--bad-soft: #fdeaea;--sidebar-w: 240px}@media(prefers-color-scheme:dark){:root{--bg: #0f1615;--surface: #16201f;--ink: #e6edec;--muted: #93a5a3;--line: #263332;--accent: #34d3be;--accent-soft: #12302c;--ok: #4ade80;--warn: #f0a343;--warn-soft: #2b2013;--bad: #f87171;--bad-soft: #331616}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Segoe UI,system-ui,sans-serif;font-size:15px;line-height:1.5}.shell{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:14px;padding:0 18px;height:56px;flex-shrink:0;border-bottom:1px solid var(--line);background:var(--surface)}.icon-btn{background:none;border:none;color:var(--muted);font-size:18px;cursor:pointer;padding:4px 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0;z-index:20;box-shadow:4px 0 16px #00000026}main{padding:18px}}