:root {
  --bg: #ffffff;
  --fg: #1d1d1f;
  --muted: #6e6e73;
  --accent: #5e5ce6;
  --card: #f5f5f7;
  --border: #e5e5ea;
  --max: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1d1d1f;
    --fg: #f5f5f7;
    --muted: #98989d;
    --accent: #7d7aff;
    --card: #2c2c2e;
    --border: #3a3a3c;
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

header.site {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header.site .brand {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--fg);
}

header.site nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 20px;
  font-size: 0.95rem;
}

header.site nav a:hover { color: var(--accent); }

.hero {
  text-align: center;
  padding: 80px 0 60px;
}

.hero .icon {
  font-size: 4rem;
  display: block;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.hero p.tagline {
  font-size: 1.25rem;
  color: var(--muted);
  max-width: 540px;
  margin: 0 auto 28px;
}

.badge {
  display: inline-block;
  background: var(--fg);
  color: var(--bg);
  border-radius: 10px;
  padding: 10px 22px;
  text-decoration: none;
  font-weight: 600;
}

.badge.soon {
  background: var(--card);
  color: var(--muted);
  cursor: default;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  padding: 20px 0 60px;
}

.feature {
  background: var(--card);
  border-radius: 14px;
  padding: 22px;
}

.feature h3 { font-size: 1.05rem; margin-bottom: 6px; }
.feature p { color: var(--muted); font-size: 0.95rem; }

main.doc { padding: 48px 0 80px; }
main.doc h1 { font-size: 2rem; margin-bottom: 8px; letter-spacing: -0.02em; }
main.doc .updated { color: var(--muted); font-size: 0.9rem; margin-bottom: 32px; }
main.doc h2 { font-size: 1.35rem; margin: 36px 0 10px; }
main.doc h3 { font-size: 1.1rem; margin: 24px 0 8px; }
main.doc p, main.doc li { color: var(--fg); margin-bottom: 10px; }
main.doc ul, main.doc ol { padding-left: 24px; margin-bottom: 16px; }
main.doc code {
  background: var(--card);
  border-radius: 5px;
  padding: 2px 6px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.9em;
}
main.doc .note {
  background: var(--card);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 14px 18px;
  margin: 16px 0;
  color: var(--fg);
}

footer.site {
  border-top: 1px solid var(--border);
  padding: 28px 0 48px;
  color: var(--muted);
  font-size: 0.9rem;
}

footer.site a { color: var(--muted); }
footer.site a:hover { color: var(--accent); }