:root {
  --bg: #0e1116;
  --card: #161b22;
  --fg: #d7dde5;
  --muted: #8b97a7;
  --accent: #6ea8fe;
  --border: #232a33;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --card: #ffffff;
    --fg: #1f2328;
    --muted: #57606a;
    --accent: #0b5ed7;
    --border: #d8dee4;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 3rem 1.25rem 5rem;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main {
  max-width: 46rem;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem 2.25rem;
}
h1 { font-size: 1.6rem; margin: 0 0 .35rem; }
h2 { font-size: 1.1rem; margin: 2.2rem 0 .6rem; }
.sub { color: var(--muted); margin: 0 0 2rem; font-size: .95rem; }
a { color: var(--accent); }
ul { padding-left: 1.2rem; }
li { margin: .35rem 0; }
table { border-collapse: collapse; width: 100%; margin: .8rem 0; font-size: .95rem; }
th, td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
footer { max-width: 46rem; margin: 1.5rem auto 0; color: var(--muted); font-size: .85rem; }
code { background: var(--bg); padding: .1rem .35rem; border-radius: 4px; font-size: .9em; }