*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  background: #ffffff;
  padding: 24px 16px 48px;
}
@media (prefers-color-scheme: dark) {
  body { color: #e5e5e5; background: #111111; }
  a { color: #60a5fa; }
}
.container { max-width: 640px; margin: 0 auto; }
h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.updated { font-size: 14px; color: #666; margin-bottom: 32px; }
@media (prefers-color-scheme: dark) { .updated { color: #999; } }
h2 { font-size: 20px; font-weight: 600; margin-top: 32px; margin-bottom: 12px; }
h3 { font-size: 17px; font-weight: 600; margin-top: 24px; margin-bottom: 8px; }
p, ul { margin-bottom: 16px; }
ul { padding-left: 24px; }
li { margin-bottom: 8px; }
a { color: #2563eb; }