:root { color-scheme: light dark; }
body {
  max-width: 42rem;
  margin: 2rem auto;
  padding: 0 1rem;
  font-family: Georgia, 'Times New Roman', serif;
  line-height: 1.6;
}
header h1 a { text-decoration: none; color: inherit; }
.tagline { color: #666; font-style: italic; }
article { margin: 2rem 0; }
article h2 { margin-bottom: 0.2rem; }
time { color: #888; font-size: 0.9rem; }
footer { margin-top: 3rem; color: #666; border-top: 1px solid #ccc; padding-top: 1rem; }
@media (prefers-color-scheme: dark) {
  .tagline, time, footer { color: #aaa; }
  footer { border-color: #444; }
}