:root {
  --bg: #0f1c1a;
  --surface: #182b27;
  --text: #eaf2ee;
  --muted: #9db3ac;
  --border: #24382f;
  --accent: #4f8272;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); }

.site-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.header-row {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand img { height: 28px; display: block; }

nav { display: flex; gap: 20px; }

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 550;
}

nav a:hover, nav a.active { color: var(--text); }

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.hero {
  text-align: center;
  padding: 40px 0 20px;
}

.hero img.lockup {
  max-width: 100%;
  height: auto;
  width: 420px;
}

.tagline {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 20px auto 0;
  max-width: 480px;
  line-height: 1.6;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 24px;
  margin-top: 28px;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

@media (max-width: 560px) {
  .cards { grid-template-columns: 1fr; }
}

.doc h1 {
  font-size: 1.5rem;
  margin: 0 0 4px;
}

.doc .updated {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 28px;
}

.doc h2 {
  font-size: 1.05rem;
  margin: 28px 0 8px;
}

.doc p, .doc li {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text);
}

.doc ul { padding-left: 20px; }

.doc code {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.85em;
}

footer {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
}