body{margin:0;min-height:100vh;display:grid;place-items:center;background:#0f172a;color:#e2e8f0;font:18px system-ui,sans-serif}main{max-width:640px;padding:48px}h1{font-size:clamp(2rem,5vw,3.5rem);line-height:1.1;color:white}p{line-height:1.6}main>p:first-child{letter-spacing:.2em;color:#7dd3fc}