:root {
  --bg: #ffffff;
  --text: #1b1d24;
  --muted: #5b6070;
  --link: #6b3fd6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0f17;
    --text: #e8e9f0;
    --muted: #9ba0b3;
    --link: #b49bff;
  }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}
h1 { font-size: 1.8rem; line-height: 1.2; margin-bottom: 4px; }
h2 { font-size: 1.2rem; margin-top: 2rem; }
h3 { font-size: 1rem; margin-bottom: 0; }
.meta { color: var(--muted); margin-top: 0; }
a { color: var(--link); }
li { margin-bottom: 6px; }