:root{color-scheme:light dark;font-family:system-ui,-apple-system,sans-serif;line-height:1.7}body{max-width:48rem;margin:4rem auto;padding:0 1.25rem}h1{font-size:2rem;line-height:1.2}h2{font-size:1.25rem;margin-top:2rem}a{color:#2781c5}nav{display:flex;gap:1.5rem;flex-wrap:wrap}footer{margin-top:3rem;padding-top:1rem;border-top:1px solid #8886;font-size:.9rem}.muted{opacity:.7}