:root{--bg:#ffffff;--fg:#18181b;--muted:#52525b;--accent:#1d4ed8;--border:#e4e4e7;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--bg:#0b0b0f;--fg:#f4f4f5;--muted:#a1a1aa;--accent:#60a5fa;--border:#27272a}}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--bg);color:var(--fg);font:15px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}main{max-width:820px;margin:0 auto;padding:3rem 1.25rem}h1{font-size:1.8rem;margin:0 0 .25rem}a{color:var(--accent)}.muted{color:var(--muted)}.card{border:1px solid var(--border);border-radius:12px;padding:1rem 1.25rem;margin:1rem 0}ul{padding-left:1.2rem}code{background:color-mix(in srgb,var(--fg) 8%,transparent);padding:.1rem .35rem;border-radius:6px}