:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5c5c5c;
  --link: #0b5cd5;
  --border: #dddddd;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #f0f0f0;
    --muted: #a8a8a8;
    --link: #7ab0ff;
    --border: #333333;
  }
}

body {
  margin: 0 auto;
  max-width: 42rem;
  padding: 2rem 1rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font:
    1rem/1.6 system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif;
}

a {
  color: var(--link);
}

h1,
h2 {
  line-height: 1.25;
}

.muted {
  color: var(--muted);
}

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

footer a {
  margin-right: 1rem;
}