:root {
  --indigo: #4f46e5;
  --indigo-2: #7c5cff;
  --ink: #1c1740;
  --muted: #5b5780;
  --line: #e6e3f2;
  --bg: #f6f7fb;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
a { color: var(--indigo); }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 22px; }

header.site {
  position: sticky; top: 0; z-index: 10;
  background: rgba(246, 247, 251, 0.9);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
header.site .bar { display: flex; align-items: center; gap: 12px; height: 62px; }
header.site .brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--ink); text-decoration: none; }
header.site nav { margin-left: auto; display: flex; gap: 18px; }
header.site nav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 15px; }
header.site nav a:hover, header.site nav a.active { color: var(--indigo); }
.logo { width: 32px; height: 32px; border-radius: 8px; }

.hero { text-align: center; padding: 76px 0 28px; }
.hero h1 { font-size: 46px; line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 12px; }
.hero h1 .accent { color: var(--indigo); }
.hero p.lead { font-size: 21px; color: var(--muted); margin: 0 auto; max-width: 640px; }
.cta { margin-top: 26px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 20px; border-radius: 12px; font-weight: 700; text-decoration: none; font-size: 15px; }
.btn.primary { background: var(--indigo); color: #fff; }
.btn.ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }

.pills { margin-top: 22px; display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.pill { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 8px 15px; font-size: 14px; font-weight: 600; color: #4a4670; }

.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 40px 0; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.sites { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 22px; margin: 28px 0; }
.sites h2 { margin: 0 0 10px; font-size: 18px; }
.sites .row { display: flex; gap: 8px; flex-wrap: wrap; }
.sites .chip { background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 6px 13px; font-size: 13.5px; font-weight: 600; color: #3f3a66; }
.sites .note { color: var(--muted); font-size: 13px; margin: 12px 0 0; }

article.doc h1 { font-size: 34px; margin: 40px 0 4px; }
article.doc .updated { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
article.doc h2 { font-size: 21px; margin: 30px 0 8px; }
article.doc h3 { font-size: 17px; margin: 22px 0 6px; }
article.doc ul { padding-left: 22px; }
article.doc li { margin: 6px 0; }
article.doc .callout { background: #efeaff; border: 1px solid #ddd6fb; border-radius: 12px; padding: 14px 18px; margin: 18px 0; }
article.doc code { background: #eceaf6; padding: 2px 6px; border-radius: 6px; font-size: 13.5px; }

.support-box { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 24px; margin: 24px 0; }
.support-box .email { font-size: 20px; font-weight: 800; }

footer.site { border-top: 1px solid var(--line); margin-top: 50px; padding: 28px 0 60px; color: var(--muted); font-size: 14px; }
footer.site .bar { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
footer.site a { color: var(--muted); text-decoration: none; font-weight: 600; }
footer.site .sp { margin-left: auto; }

@media (max-width: 620px) {
  .cards { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
  header.site nav { gap: 12px; }
}