:root {
  --primary: #6c3ce9;
  --primary-soft: #f1ecff;
  --ink: #17142b;
  --muted: #6b6785;
  --surface: #f7f5ff;
  --card: #ffffff;
  --outline: #e7e3f5;
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --primary: #9b7bff;
    --primary-soft: #2e2552;
    --ink: #efeaff;
    --muted: #a39dc0;
    --surface: #0f0c1d;
    --card: #1b1630;
    --outline: #2c2546;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--surface);
}
a { color: var(--primary); }
a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

header.site {
  background: linear-gradient(135deg, #8b5cf6, #5b21b6);
  color: #fff;
}
header.site .wrap { display: flex; align-items: center; gap: 12px; padding-top: 18px; padding-bottom: 18px; }
header.site a { color: #fff; text-decoration: none; font-weight: 700; font-size: 20px; display: flex; align-items: center; gap: 10px; }
.logo {
  width: 36px; height: 36px; border-radius: 10px; background: rgba(255, 255, 255, .18);
  display: grid; place-items: center; font-weight: 800;
}
nav.top { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
nav.top a { font-weight: 500; font-size: 15px; opacity: .9; }

.wrap { max-width: 820px; margin: 0 auto; padding: 0 22px; }
main { padding: 36px 0 56px; }
h1 { font-size: 34px; line-height: 1.2; margin: 0 0 6px; }
h2 { font-size: 22px; margin: 40px 0 8px; padding-top: 8px; }
h3 { font-size: 18px; margin: 24px 0 4px; }
p.updated { color: var(--muted); margin: 0 0 24px; }
.lead { font-size: 19px; color: var(--muted); }

.summary {
  background: var(--card); border: 1px solid var(--outline); border-radius: var(--radius);
  padding: 8px 22px; margin: 24px 0;
}
.summary ul { padding-left: 20px; }
.summary li { margin: 6px 0; }
.note {
  background: var(--primary-soft); border-radius: var(--radius); padding: 14px 18px; margin: 18px 0;
}
.toc { columns: 2; column-gap: 32px; padding-left: 20px; }
.toc li { margin: 3px 0; break-inside: avoid; }
@media (max-width: 600px) { .toc { columns: 1; } h1 { font-size: 28px; } nav.top { gap: 12px; } }

table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 16px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--outline); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.table-scroll { overflow-x: auto; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 24px 0; }
.card { background: var(--card); border: 1px solid var(--outline); border-radius: var(--radius); padding: 18px; }
.card h3 { margin-top: 0; }
.hero { padding: 24px 0 8px; }
.badge { display: inline-block; background: var(--primary-soft); color: var(--primary); border-radius: 999px; padding: 4px 12px; font-size: 14px; font-weight: 600; }

footer.site { border-top: 1px solid var(--outline); color: var(--muted); font-size: 15px; padding: 24px 0 40px; }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.summary h2.first { margin-top: 12px; }
.hero-title { margin-top: 14px; }
nav.top a { white-space: nowrap; }
@media (max-width: 480px) { nav.top a:nth-child(3) { display: none; } }