:root{color-scheme:light dark}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;display:grid;place-items:center;min-height:100dvh}main{text-align:center;padding:2rem}h1{font-size:clamp(2rem,6vw,3.5rem);margin:0 0 .5rem}p{margin:0;opacity:.7}