:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5;color-scheme:light dark;color:#111;background:#fafafa}body{margin:0}.container{max-width:720px;margin:4rem auto;padding:0 1.5rem}h1{font-size:2rem;margin-bottom:.5rem}.meta{color:#666;font-size:.9rem}code{background:#0000000d;padding:.1rem .3rem;border-radius:3px}