:root { color-scheme: light dark; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  max-width: 680px;
  margin: 10vh auto 4rem;
  padding: 0 1.25rem;
  line-height: 1.6;
  color: #1f2328;
}
@media (prefers-color-scheme: dark) {
  body { color: #e6edf3; background: #0d1117; }
  a { color: #58a6ff; }
  code { background: #161b22; }
}
h1 { font-size: 1.4rem; margin-bottom: .25rem; }
.ok { color: #1a7f37; font-weight: 600; }
@media (prefers-color-scheme: dark) { .ok { color: #3fb950; } }
code { background: #f6f8fa; padding: .15rem .4rem; border-radius: 4px; font-size: .9em; }
.meta { color: #656d76; font-size: .9rem; margin-top: 2rem; }
@media (prefers-color-scheme: dark) { .meta { color: #8b949e; } }
ul { padding-left: 1.2rem; }
footer { margin-top: 3rem; font-size: .85rem; color: #656d76; }
footer a { color: inherit; text-decoration: underline; }