:root{color-scheme:light dark;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}body{margin:0;background:#f5f6f8;color:#14161a}main{max-width:46rem;margin:3rem auto;padding:2rem;background:#fff;border-radius:1rem}h1,h2{line-height:1.25}h1{font-size:2rem}h2{margin-top:2rem}a{color:#006b78}nav{display:flex;gap:1rem;flex-wrap:wrap;border-bottom:1px solid #ddd;padding-bottom:1rem}footer{border-top:1px solid #ddd;margin-top:2rem;padding-top:1rem;color:#555}@media(max-width:52rem){main{margin:0;border-radius:0;padding:1.25rem}}@media(prefers-color-scheme:dark){body{background:#111;color:#f2f3f5}main{background:#1c1d20}a{color:#61d5df}footer{color:#bbb}}