:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #111418;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --fg: #e6e9ed;
  }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 18px/1.6 system-ui, sans-serif;
}
main {
  max-width: 40rem;
  margin: 4rem auto;
  padding: 0 1rem;
}