:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  margin: 0 auto; padding: 2.5rem 1.25rem 5rem; max-width: 46rem;
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: #1a1a1a; background: #fff;
}
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 .35rem; }
h2 { font-size: 1.15rem; margin: 2.25rem 0 .6rem; }
.updated { color: #666; font-size: .9rem; margin: 0 0 2rem; }
ul { padding-left: 1.25rem; }
li { margin: .3rem 0; }
strong { font-weight: 600; }
.key {
  border-left: 3px solid #666; padding: .85rem 1rem;
  margin: 1rem 0; background: rgba(0,0,0,.035);
}
footer {
  margin-top: 3.5rem; padding-top: 1.25rem;
  border-top: 1px solid rgba(0,0,0,.12); color: #666; font-size: .9rem;
}
a { color: #0055cc; }
@media (prefers-color-scheme: dark) {
  body { color: #e6e6e6; background: #16181c; }
  .updated, footer { color: #9aa0a6; }
  .key { border-left-color: #8a94a6; background: rgba(255,255,255,.05); }
  footer { border-top-color: rgba(255,255,255,.14); }
  a { color: #7fb0ff; }
}