:root {
  --color-bg: #0b0c0f;
  --color-surface: #15171c;
  --color-surface-2: #1e2129;
  --color-text: #f3f4f6;
  --color-text-muted: #9ba3af;
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-accent: #f59e0b;
  --color-border: #2a2d36;
  --radius: 0.75rem;
  --container: 72rem;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
}

.logo {
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover { background: var(--color-primary-hover); text-decoration: none; }

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-outline:hover { background: var(--color-surface-2); text-decoration: none; }

.hero {
  padding: 5rem 0 4rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.1;
  margin: 0 0 1.25rem;
  letter-spacing: -0.03em;
}

.hero p.lead {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  max-width: 48rem;
  margin: 0 auto 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.section { padding: 4rem 0; }
.section-title {
  font-size: 2rem;
  margin-bottom: 1rem;
  text-align: center;
}
.section-subtitle {
  color: var(--color-text-muted);
  text-align: center;
  max-width: 40rem;
  margin: 0 auto 2.5rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 1.5rem;
}

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

.card h3 { margin-top: 0; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.price { font-size: 2.5rem; font-weight: 800; margin: 0.5rem 0; }
.price span { font-size: 1rem; color: var(--color-text-muted); font-weight: 400; }

.feature-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  text-align: left;
}
.feature-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
}
.feature-list li:last-child { border-bottom: none; }

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 3rem 0 1.5rem;
  margin-top: 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin: 0.35rem 0; }
.footer-grid a { color: var(--color-text-muted); }

.footer-bottom {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
}
.compare-table th, .compare-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.compare-table th { color: var(--color-text-muted); font-weight: 600; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.35rem; font-weight: 500; }
.form-group input, .form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text);
  font: inherit;
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero { padding: 3rem 0; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }
}