:root { --bg: #ffffff; --fg: #1f2937; --muted: #6b7280; --rule: #e5e7eb; --link: #1d4ed8; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #111827; --fg: #e5e7eb; --muted: #9ca3af; --rule: #374151; --link: #93c5fd; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 40px 16px 64px; }
header p { margin: 0; color: var(--muted); font-size: 0.95rem; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0.25rem 0 0.5rem; }
h2 { font-size: 1.2rem; margin: 2rem 0 0.5rem; padding-top: 1rem; border-top: 1px solid var(--rule); }
ul, ol { padding-left: 1.25rem; }
li { margin: 0.35rem 0; }
a { color: var(--link); overflow-wrap: anywhere; }
address { font-style: normal; }
nav { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--rule); font-size: 0.95rem; }
nav a { margin-right: 1.25rem; }