:root{--bg: #ffffff;--fg: #0a0a0a;--border: #e5e5e5;--muted: #737373;--subtle: #f5f5f5;--input-bg: #ffffff;--ok: #16a34a;--warning: #d97706;--critical: #dc2626;--radius: 4px;--font-mono: "SF Mono", "Fira Mono", ui-monospace, monospace}@media(prefers-color-scheme:dark){:root{--bg: #0a0a0a;--fg: #fafafa;--border: #262626;--muted: #737373;--subtle: #111111;--input-bg: #171717}}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}.app-header{border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:10}.nav{max-width:1100px;margin:0 auto;padding:0 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