:root {
  --bg: #0B0F1A;
  --surface: #111827;
  --border: #1F2937;
  --text: #E5E7EB;
  --text-muted: #9CA3AF;
  --text-soft: #6B7280;
  --primary: #6366F1;
  --primary-hover: #818CF8;
  --purple: #7C3AED;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s;
}
a:hover { color: var(--primary-hover); }

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 96px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--purple));
  display: grid;
  place-items: center;
  color: white;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: -0.02em;
}

nav {
  display: flex;
  gap: 24px;
  font-size: 14px;
}
nav a { color: var(--text-muted); }
nav a:hover { color: var(--text); }

h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

h2 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 40px 0 12px;
}

h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 24px 0 8px;
}

p { margin: 0 0 16px; color: var(--text-muted); }
p.lead {
  color: var(--text);
  font-size: 17px;
}

ul, ol {
  color: var(--text-muted);
  padding-left: 24px;
}
li { margin-bottom: 6px; }

.meta {
  font-size: 13px;
  color: var(--text-soft);
  margin-bottom: 32px;
}

.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 24px 0;
}
.callout p:last-child { margin-bottom: 0; }

footer {
  margin-top: 96px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
footer a { color: var(--text-soft); }
footer a:hover { color: var(--text-muted); }

.hero {
  text-align: center;
  padding: 64px 0 32px;
}
.hero h1 {
  font-size: 44px;
  background: linear-gradient(135deg, var(--text), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
}
.hero p {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 32px;
}
.hero .links {
  display: flex;
  gap: 24px;
  justify-content: center;
  font-size: 15px;
}

@media (max-width: 600px) {
  .container { padding: 20px 20px 64px; }
  header { padding: 16px 0 32px; margin-bottom: 32px; }
  h1 { font-size: 26px; }
  .hero h1 { font-size: 32px; }
  nav { gap: 16px; font-size: 13px; }
}