:root{color-scheme:dark}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,sans-serif;background:#0a0a0a;color:#e8e8e8;padding:2rem;line-height:1.5}main{max-width:720px;margin:0 auto}h1{font-weight:600;letter-spacing:-.02em}a{color:#7dd3fc}