:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  background: canvas;
  color: canvastext;
}

.card {
  width: min(680px, 100%);
  padding: 3rem;
  border: 1px solid color-mix(in srgb, canvastext 18%, transparent);
  border-radius: 20px;
  text-align: center;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 6vw, 4rem);
}

p {
  margin: 0;
  font-size: 1.1rem;
  opacity: .75;
}