:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #5b6470;
  --line: #e3e6eb;
  --accent: #1b64f2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1013;
    --fg: #e8eaee;
    --muted: #9aa3af;
    --line: #242830;
    --accent: #7aa7ff;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
header {
  border-bottom: 1px solid var(--line);
  padding: 14px 20px;
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
}
header a.brand { font-weight: 650; text-decoration: none; color: var(--fg); }
header nav { display: flex; gap: 16px; flex-wrap: wrap; }
main { max-width: 46rem; margin: 0 auto; padding: 32px 20px 64px; }
h1 { font-size: 1.55rem; line-height: 1.3; }
h2 { font-size: 1.1rem; margin-top: 2rem; }
a { color: var(--accent); }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.88em; }
pre { background: var(--line); padding: 12px; border-radius: 8px; overflow-x: auto; }
table { border-collapse: collapse; width: 100%; }
th, td { border-bottom: 1px solid var(--line); padding: 8px 6px; text-align: left; vertical-align: top; }
.muted { color: var(--muted); }
footer { border-top: 1px solid var(--line); padding: 20px; color: var(--muted); font-size: 0.9rem; }