:root {
  --bg: #ffffff;
  --text: #1c1c1e;
  --muted: #6e6e73;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --text: #f2f2f7;
    --muted: #a1a1a6;
  }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
main {
  max-width: 32rem;
  margin: 18vh auto 0;
  padding: 0 16px;
  text-align: center;
}
h1 {
  font-size: 1.6rem;
  margin: 0 0 0.5rem;
}
p {
  color: var(--muted);
}