:root{color-scheme:dark;--bg:#0b0f14;--text:#e8eef5;--muted:#9aa7b5;--accent:#5eead4}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,sans-serif;background:radial-gradient(1200px 600px at 20% -10%,#123 0%,var(--bg) 55%);color:var(--text);min-height:100vh}
main{max-width:42rem;margin:0 auto;padding:4rem 1.25rem}h1{font-weight:650;letter-spacing:-.03em}p{color:var(--muted);line-height:1.55}a{color:var(--accent)}