:root{--bg:#ffffff;--bg-subtle:#f6f8fa;--surface:#ffffff;--surface-2:#f6f8fa;--border:#e2e6ea;--border-strong:#d0d7de;--text:#1f2328;--text-muted:#57606a;--accent:#5b53e0;--accent-hover:#4a43c9;--accent-soft:rgba(91,83,224,0.1);--danger:#cf222e;--danger-soft:rgba(207,34,46,0.08);--success:#1a7f37;--success-soft:rgba(26,127,55,0.1);--warning:#9a6700;--code-bg:#f6f8fa;--code-text:#1f2328;--shadow-sm:0 1px 2px rgba(27,31,36,0.06);--shadow-md:0 8px 24px rgba(27,31,36,0.08);--radius:10px;--radius-sm:6px;--maxw:1180px;--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji",sans-serif;--mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation 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