:root{--bg: #fafaf9;--fg: #18181b;--muted: #71717a;--line: #e4e4e7;--card: #ffffff;--accent: #0f172a;--ok: #16a34a;--err: #dc2626;--code-bg: #f4f4f5;--code-fg: #18181b;--radius: 6px}@media(prefers-color-scheme:dark){:root{--bg: #0a0a0a;--fg: #f4f4f5;--muted: #a1a1aa;--line: #27272a;--card: #111113;--accent: #f4f4f5;--ok: #22c55e;--err: #f87171;--code-bg: #161618;--code-fg: #e4e4e7}}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%;padding:0}body{background:var(--bg);color:var(--fg);font:14px/1.6 -apple-system,BlinkMacSystemFont,Segoe UI,Helvetica Neue,Arial,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased}code,pre,.mono{font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,monospace;font-size:13px}a{color:inherit}header{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 85%,transparent);-webkit-backdrop-filter:saturate(180%) blur(8px);backdrop-filter:saturate(180%) 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