:root {
  --bg: #0b1020;
  --bg-muted: #121a2f;
  --surface: #18233d;
  --text: #eef2ff;
  --text-muted: #a8b3cf;
  --accent: #4f8cff;
  --accent-strong: #2f6ff0;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(11, 16, 32, 0.85);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 1rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
}

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

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

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

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

.nav-cta {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
}

.hero {
  padding: 5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
}

h1,
h2,
h3 {
  line-height: 1.15;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  margin: 0.75rem 0 1rem;
}

.lead {
  color: var(--text-muted);
  font-size: 1.125rem;
  max-width: 38rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.25rem;
  border-radius: 12px;
  font-weight: 600;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: white;
  box-shadow: var(--shadow);
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

.hero-card {
  background: linear-gradient(180deg, rgba(79, 140, 255, 0.12), rgba(79, 140, 255, 0));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.chat-preview {
  display: grid;
  gap: 0.75rem;
}

.chat-bubble {
  max-width: 85%;
  padding: 0.85rem 1rem;
  border-radius: 16px;
  font-size: 0.95rem;
}

.chat-bubble.inbound {
  background: var(--surface);
  border: 1px solid var(--border);
}

.chat-bubble.outbound {
  background: rgba(79, 140, 255, 0.18);
  border: 1px solid rgba(79, 140, 255, 0.35);
  justify-self: end;
}

.section {
  padding: 4.5rem 0;
}

.section-muted {
  background: var(--bg-muted);
}

.features,
.pricing {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.feature,
.price-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.5rem;
}

.price-card.featured {
  border-color: rgba(79, 140, 255, 0.55);
  transform: translateY(-4px);
}

.price {
  font-size: 2rem;
  font-weight: 700;
  margin: 0.5rem 0 1rem;
}

.price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.price-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
}

.contact {
  text-align: center;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2rem;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .hero-grid,
  .features,
  .pricing {
    grid-template-columns: 1fr;
  }

  .nav {
    justify-content: flex-end;
  }
}