:root {
  --bg: #0a0a0f;
  --bg-alt: #0f0f16;
  --card-bg: #13131a;
  --border: rgba(255, 255, 255, 0.1);
  --fg: #f5f5f7;
  --fg-dim: #a3a3ab;
  --accent: #7c3aed;
  --accent-2: #22d3ee;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;
}

* { box-sizing: border-box; }

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

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 16px;
}

h1 { font-size: 44px; }
h2 { font-size: 28px; }
h3 { font-size: 18px; margin-bottom: 8px; }

p { margin: 0 0 16px; color: var(--fg-dim); }

a { color: var(--fg); text-decoration: none; }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-wordmark {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  color: var(--fg-dim);
  font-size: 14px;
  font-weight: 500;
}

.nav-links a:hover { color: var(--fg); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background-image: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
}

.btn-primary:hover { filter: brightness(1.08); }

.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--fg);
}

.btn-secondary:hover { border-color: rgba(255, 255, 255, 0.3); }

.btn-lg { padding: 14px 26px; font-size: 15px; }

/* --- Hero --- */
.hero {
  padding: 96px 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.lede { font-size: 17px; max-width: 46ch; }

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero-visual {
  background: radial-gradient(circle at 50% 40%, rgba(124, 58, 237, 0.12), transparent 70%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
}

/* --- Sections --- */
.section { padding: 72px 0; }

.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head { max-width: 56ch; margin: 0 auto 40px; text-align: center; }

.section-head p { font-size: 16px; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.card p { margin-bottom: 0; font-size: 14px; }

/* --- CTA band --- */
.cta-band { text-align: center; }

.cta-inner { max-width: 56ch; margin: 0 auto; }

.cta-inner .hero-actions { justify-content: center; }

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-inner .nav-links { justify-content: flex-start; gap: 20px; }

.footer-copy { color: var(--fg-dim); font-size: 13px; }

@media (max-width: 760px) {
  .hero { padding: 56px 0 48px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-height: 220px; }
  h1 { font-size: 32px; }
  .nav-links { display: none; }
  .site-header .container { justify-content: space-between; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}