:root {
  --bg: #0f172a;
  --panel: #111827;
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #3b82f6;
  --border: rgba(255,255,255,0.08);
  --radius: 14px;
  --max: 1100px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, sans-serif;
  background: linear-gradient(180deg,#0f172a 0%, #0b1220 100%);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(var(--max), 92%);
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
}

.nav { display: flex; gap: 18px; }

.nav-link {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
}

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

.hero {
  padding: 80px 0 60px;
}

h1 {
  font-size: 3rem;
  margin-bottom: 20px;
}

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

.lead {
  color: var(--muted);
  font-size: 1.2rem;
  max-width: 600px;
}

.btn {
  display: inline-block;
  padding: 12px 20px;
  margin-right: 12px;
  border-radius: var(--radius);
  text-decoration: none;
  background: var(--accent);
  color: white;
  font-weight: 600;
}

.btn-secondary {
  background: #1f2937;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 24px;
  border-radius: var(--radius);
  margin: 20px 0;
  transition: transform .2s ease, box-shadow .2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(0,0,0,.4);
}

.site-footer {
  margin-top: 60px;
  padding: 30px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
}