:root {
  --bg: #f6f7fb;
  --text: #16181d;
  --muted: #5b6070;
  --accent: #3047c6;
  --rule: #e2e5ee;
  --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101218;
    --text: #e9ebf2;
    --muted: #a3a8b8;
    --accent: #9fb0ff;
    --rule: #262a35;
    --card: #171a22;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
header, main, footer { max-width: 44rem; margin: 0 auto; padding: 0 1.25rem; }
header { padding-top: 2rem; display: flex; align-items: baseline; gap: 1.25rem; flex-wrap: wrap; }
header .brand { font-weight: 700; font-size: 1.25rem; color: var(--text); text-decoration: none; }
header nav a { color: var(--muted); text-decoration: none; margin-right: 1rem; }
header nav a[aria-current="page"] { color: var(--accent); }
main { padding-top: 1.5rem; padding-bottom: 3rem; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0.5rem 0 0.25rem; }
h2 { font-size: 1.2rem; margin: 2.25rem 0 0.5rem; }
.lede { color: var(--muted); margin-top: 0; }
.updated { color: var(--muted); font-size: 0.9rem; }
a { color: var(--accent); }
ul { padding-left: 1.25rem; }
li { margin: 0.35rem 0; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.95rem; background: var(--card); }
th, td { text-align: left; vertical-align: top; padding: 0.6rem 0.7rem; border: 1px solid var(--rule); }
th { font-weight: 600; }
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 12px; padding: 1rem 1.25rem; margin: 1rem 0; }
footer { color: var(--muted); font-size: 0.9rem; padding-bottom: 2.5rem; border-top: 1px solid var(--rule); padding-top: 1.25rem; }