:root {
  --bg: #f6f3fb;
  --card: #ffffff;
  --ink: #1d1433;
  --muted: #5d5575;
  --line: #e4def0;
  --primary: #5b21b6;
  --primary-ink: #ffffff;
  --accent: #f59e0b;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #150c26;
    --card: #1f1238;
    --ink: #f3eefc;
    --muted: #b6abd0;
    --line: #34234f;
    --primary: #a78bfa;
    --primary-ink: #150c26;
    --accent: #fbbf24;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
a { color: var(--primary); }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }
header.top { padding: 28px 0 12px; }
.brand { font-weight: 800; letter-spacing: 0.22em; color: var(--primary); text-decoration: none; font-size: 15px; }
h1 { font-size: clamp(30px, 6vw, 44px); line-height: 1.15; margin: 28px 0 14px; }
h2 { font-size: 20px; margin: 34px 0 8px; }
p, li { color: var(--ink); }
.lead { font-size: 18px; color: var(--muted); max-width: 56ch; }
.muted { color: var(--muted); font-size: 14px; }
.cards { display: grid; gap: 14px; margin: 28px 0; }
@media (min-width: 640px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 18px; }
.card h3 { margin: 0 0 6px; font-size: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.badge { display: inline-block; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-size: 13px; color: var(--muted); }
.btn { display: inline-block; background: var(--primary); color: var(--primary-ink); text-decoration: none; font-weight: 700; padding: 13px 26px; border-radius: 14px; }
main.doc { padding-bottom: 40px; }
main.doc ul { padding-left: 20px; }
footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 24px 0 40px; font-size: 14px; color: var(--muted); }
footer a { margin-right: 16px; }
.center { text-align: center; padding: 60px 0; }