:root {
  color-scheme: dark;
  --bg: #0b0d10;
  --bg-elevated: #14171c;
  --border: #23272e;
  --text: #f2f3f5;
  --text-muted: #9aa1ac;
  --accent: #6ee7b7;
  --max-w: 760px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(11, 13, 16, 0.9);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.nav {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 20px;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
}

.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--text);
}

main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 20px 80px;
}

h1 {
  font-size: 1.9rem;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.2rem;
  margin: 40px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

h2:first-of-type { border-top: none; padding-top: 0; }

p, li { color: var(--text-muted); }

strong { color: var(--text); }

.updated {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin: 0 0 32px;
}

.lead {
  color: var(--text);
  font-size: 1.05rem;
}

ul { padding-left: 1.2em; }

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

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 22px;
  margin: 24px 0;
}

.hero {
  padding: 80px 20px 40px;
  text-align: center;
}

.hero h1 { font-size: 2.4rem; }

.hero p { max-width: 480px; margin: 12px auto 0; }

.cta {
  margin-top: 28px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.92rem;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn.primary {
  background: var(--accent);
  color: #06251b;
  border-color: var(--accent);
  font-weight: 600;
}

footer {
  border-top: 1px solid var(--border);
  padding: 28px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

footer a { color: var(--text-muted); }