:root {
  --bg: #f4f5f8;
  --card: #ffffff;
  --text: #16202b;
  --muted: #5b6673;
  --accent: #0e6e8c;
  --accent-dark: #0b3d5c;
  --rule: #e3e6eb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1418;
    --card: #1a2128;
    --text: #edf0f3;
    --muted: #9aa5b1;
    --accent: #4fb3d1;
    --accent-dark: #163b52;
    --rule: #2b343d;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
}
a { color: var(--accent); }
header.site {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  color: #fff;
  padding: 40px 16px 32px;
}
header.site .inner, main, footer.site .inner { max-width: 720px; margin: 0 auto; }
header.site h1 { margin: 0 0 4px; font-size: 32px; letter-spacing: -0.02em; }
header.site p { margin: 0; opacity: 0.9; }
header.site a { color: #fff; text-decoration: none; }
nav.site { margin-top: 20px; display: flex; gap: 18px; flex-wrap: wrap; }
nav.site a { font-weight: 600; }
main { padding: 32px 16px 48px; }
main h2 { font-size: 24px; margin: 32px 0 8px; letter-spacing: -0.01em; }
main h2:first-child { margin-top: 0; }
main h3 { font-size: 18px; margin: 24px 0 6px; }
main p, main li { color: var(--text); }
main .muted { color: var(--muted); }
.card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 18px 20px;
  margin: 16px 0;
}
table { border-collapse: collapse; width: 100%; margin: 12px 0; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 14px; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.95em; }
footer.site { padding: 24px 16px 40px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--rule); }
footer.site a { color: var(--muted); }
ul.features { padding-left: 20px; }
ul.features li { margin: 6px 0; }