:root {
  --bg: #ffffff;
  --text: #1f1f1f;
  --muted: #5f5f5f;
  --link: #3a659d;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141414;
    --text: #e8e8e8;
    --muted: #a8a8a8;
    --link: #5e92dc;
  }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 16px 64px;
}
h1 { font-size: 1.8rem; line-height: 1.25; margin: 0 0 16px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; }
a { color: var(--link); text-decoration: underline; }
code { font-size: 0.9em; overflow-wrap: anywhere; }
.meta { color: var(--muted); font-size: 0.9rem; }