:root {
  --bg: #ffffff;
  --fg: #1d2330;
  --muted: #5b6475;
  --accent: #2f6fed;
  --card: #f4f6fa;
  --border: #e2e6ee;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151c;
    --fg: #e8ebf2;
    --muted: #a2aabb;
    --accent: #7aa5ff;
    --card: #1b2029;
    --border: #2a303c;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
header.site { border-bottom: 1px solid var(--border); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 700; font-size: 20px; color: var(--fg); text-decoration: none; }
nav a { margin-left: 18px; color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--fg); }
.hero { padding: 64px 0 40px; }
.hero h1 { font-size: 40px; line-height: 1.15; margin: 0 0 16px; }
.hero p { font-size: 20px; color: var(--muted); margin: 0 0 24px; }
.badge { display: inline-block; padding: 8px 14px; border-radius: 999px; background: var(--card); border: 1px solid var(--border); font-size: 15px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 24px 0 48px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
section h2 { font-size: 26px; margin: 40px 0 12px; }
ol.steps li { margin-bottom: 8px; }
.doc { padding: 40px 0 56px; }
.doc h1 { font-size: 34px; margin-bottom: 4px; }
.doc .updated { color: var(--muted); margin-top: 0; }
.doc h2 { font-size: 22px; margin-top: 32px; }
.note { color: var(--muted); font-size: 15px; }
footer.site { border-top: 1px solid var(--border); padding: 24px 0 40px; color: var(--muted); font-size: 14px; }
footer.site a { color: var(--muted); margin-right: 16px; }
@media (max-width: 560px) {
  .hero h1 { font-size: 30px; }
  .hero p { font-size: 18px; }
  nav a { margin-left: 12px; }
}