:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 3rem 1.25rem;
  font: 16px/1.75 -apple-system, "Segoe UI", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  color: #24292f;
  background: #fbfbfa;
}
main { width: 100%; max-width: 40rem; }
header { margin-bottom: 2.25rem; }
h1 { margin: 0 0 .35rem; font-size: 1.9rem; letter-spacing: .01em; }
.tagline { margin: 0; color: #6a737d; font-size: .95rem; }
section { margin-bottom: 1.75rem; }
h2 { margin: 0 0 .55rem; font-size: 1rem; color: #57606a; font-weight: 600; }
p { margin: 0 0 .85rem; }
ul { margin: 0; padding: 0; list-style: none; }
li { padding: .3rem 0; }
li span { display: inline-block; min-width: 5.5rem; color: #6a737d; }
a { color: #0969da; text-decoration: none; }
a:hover { text-decoration: underline; }
.links li { padding: .18rem 0; }
footer { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid #e5e7eb; color: #8b949e; font-size: .85rem; }
@media (prefers-color-scheme: dark) {
  body { color: #e6edf3; background: #0d1117; }
  .tagline, li span, footer { color: #8b949e; }
  h2 { color: #9198a1; }
  a { color: #58a6ff; }
  footer { border-color: #21262d; }
}