:root{--bg:#f8fafc;--fg:#0f172a;--muted:#475569;--accent:#2563eb}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--fg);margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;font-size:16px;line-height:1.6}main{max-width:720px;margin:4rem auto;padding:0 1.5rem}h1{margin:0 0 1.5rem;font-size:1.875rem;font-weight:700}h2{margin:2rem 0 .75rem;font-size:1.25rem;font-weight:600}p{color:var(--muted);margin:0 0 1rem}a{color:var(--accent);text-decoration:underline}a:hover{text-decoration:none}code{background:#e2e8f0;border-radius:4px;padding:.1em .4em;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:.9em}footer{color:var(--muted);border-top:1px solid #e2e8f0;margin-top:4rem;padding-top:1.5rem;font-size:.875rem}