:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #101828;
  color: #f8fafc;
}
main { max-width: 42rem; padding: 2rem; text-align: center; }
h1 { margin: 0; font-size: clamp(2.6rem, 9vw, 5rem); letter-spacing: -.05em; }
p { margin: 1rem 0 0; color: #cbd5e1; font-size: 1.125rem; }