:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #ffffff;
  --muted: #666666;
  --link: #2b6cb0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f2f2f2;
    --bg: #121212;
    --muted: #a0a0a0;
    --link: #6ea8ff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

h2 {
  font-size: 1.4rem;
  margin-top: 2rem;
}

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

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

footer {
  margin-top: 3rem;
  font-size: 0.875rem;
  color: var(--muted);
}

footer a {
  margin-right: 1rem;
}