:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  max-width: 820px; margin: 0 auto; padding: 0 20px 60px;
  line-height: 1.6; color: #1e293b; background: #fff;
}
header, .doc-nav { max-width: 820px; margin: 0 auto; }
h1 { font-size: 1.6rem; margin: 24px 0 6px; color: #0f172a; }
h2 { font-size: 1.2rem; margin: 28px 0 8px; padding-bottom: 4px; border-bottom: 1px solid #e2e8f0; color: #0f172a; }
h3 { font-size: 1.02rem; margin: 20px 0 6px; color: #334155; }
a { color: #2563eb; }
code { background: #f1f5f9; padding: 1px 5px; border-radius: 3px; font-size: 0.9em; }
pre { background: #0f172a; color: #e2e8f0; padding: 12px 14px; border-radius: 8px; overflow-x: auto; }
pre code { background: none; padding: 0; }
table { border-collapse: collapse; width: 100%; margin: 12px 0; display: block; overflow-x: auto; }
th, td { border: 1px solid #e2e8f0; padding: 6px 10px; text-align: left; font-size: 0.92rem; }
th { background: #f8fafc; }
blockquote { border-left: 3px solid #cbd5e1; margin: 12px 0; padding: 2px 14px; color: #475569; }
hr { border: none; border-top: 1px solid #e2e8f0; margin: 24px 0; }
.doc-nav { padding: 14px 20px; font-size: 0.85rem; }
.doc-nav a { text-decoration: none; margin-right: 16px; }
@media (prefers-color-scheme: dark) {
  body { background: #0f172a; color: #cbd5e1; }
  h1,h2,h3 { color: #f1f5f9; }
  h2 { border-color: #334155; }
  code { background: #1e293b; }
  th { background: #1e293b; }
  th,td { border-color: #334155; }
}