:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: #000;
  color: #fff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 2rem;
  background: #000;
}
main { width: 100%; text-align: center; }
h1 {
  margin: 0;
  color: #fff;
  font-size: clamp(2.5rem, 8vw, 7rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.04em;
  text-wrap: balance;
}