:root{color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}body{margin:0;min-height:100dvh;display:grid;place-items:center}main{text-align:center}h1{margin:0 0 .25rem;font-size:clamp(2.5rem,8vw,4rem)}p{margin:0;opacity:.7}