:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  font-family: Georgia, 'Times New Roman', serif;
  line-height: 1.65;
  max-width: 42rem;
  margin: 2.5rem auto;
  padding: 0 1.25rem;
  color: #222;
  background: #faf9f6;
}
@media (prefers-color-scheme: dark) {
  body { color: #ddd; background: #14161a; }
  a { color: #7fb5ff; }
}
header h1 {
  font-size: 2rem;
  letter-spacing: 0.04em;
  margin-bottom: 0.2rem;
}
.tagline { color: #666; font-style: italic; margin-top: 0; }
section { margin: 2rem 0; }
h2 { font-size: 1.2rem; border-bottom: 1px solid #ccc; padding-bottom: 0.3rem; }
ul { padding-left: 1.2rem; }
footer { margin-top: 3rem; font-size: 0.85rem; color: #777; border-top: 1px solid #ccc; padding-top: 1rem; }
a { color: #0a58ca; text-decoration-thickness: 1px; }