:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 20px 18px 40px;
  font-family: -apple-system, "Roboto", "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: #1f2933;
  background: #ffffff;
  -webkit-text-size-adjust: 100%;
}
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 24px 0 8px; }
p, li { color: #3a444e; }
ul { padding-left: 20px; }
li { margin-bottom: 6px; }
.muted { color: #7b8794; font-size: 13px; }
a { color: #0284c7; }
.updated { color: #7b8794; font-size: 13px; margin-bottom: 20px; }
@media (prefers-color-scheme: dark) {
  body { background: #10151b; color: #e4e7eb; }
  p, li { color: #cbd2d9; }
  h1, h2 { color: #f5f7fa; }
  .muted, .updated { color: #9aa5b1; }
}