:root {
  --fg: #222;
  --muted: #666;
  --link: #1a5fb4;
  --rule: #ddd;
}

html {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: var(--fg);
}

body {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1.5rem;
}

.site-header {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.75rem;
  margin-bottom: 2rem;
}

.site-header a {
  text-decoration: none;
  color: var(--fg);
  font-size: 1.1rem;
}

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

h1, h2, h3 {
  line-height: 1.25;
}

code {
  background: #f2f2f2;
  padding: 0.1em 0.3em;
  border-radius: 3px;
  font-size: 0.95em;
}

.site-footer {
  border-top: 1px solid var(--rule);
  margin-top: 3rem;
  padding-top: 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}