*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0a0a0f;
  --bg-elevated: #111118;
  --bg-card: #16161f;
  --border: #1e1e2e;
  --border-hover: #2a2a3e;
  --text: #e2e2ea;
  --text-muted: #8b8b9a;
  --text-dim: #5a5a6a;
  --primary: #7c3aed;
  --primary-light: #a78bfa;
  --accent: #ec4899;
  --accent-light: #f472b6;
  --success: #22c55e;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.15);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  height: 64px;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-actions {
  display: flex;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  box-shadow: 0 2px 8px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  color: var(--text);
  background: var(--bg-elevated);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-hover);
}

.btn-outline:hover {
  border-color: var(--text-muted);
  background: var(--bg-elevated);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 15px;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
  padding: 12px;
}

/* Hero */
.hero {
  padding: 140px 32px 80px;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text) 0%, var(--primary-light) 50%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 64px;
  flex-wrap: wrap;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Demo */
.demo {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.demo-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.demo-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.demo-dots {
  display: flex;
  gap: 6px;
}

.demo-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-hover);
}

.demo-dots span:first-child { background: #ef4444; }
.demo-dots span:nth-child(2) { background: #f59e0b; }
.demo-dots span:last-child { background: #22c55e; }

.demo-title {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 500;
}

.demo-body {
  padding: 20px;
  overflow-x: auto;
}

.demo-body pre {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-muted);
}

.token-kw { color: var(--primary-light); }
.token-str { color: var(--accent-light); }

.demo-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.demo-img {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  background-size: cover;
  background-position: center;
  border: 1px solid var(--border);
  transition: transform 0.3s, border-color 0.3s;
}

.demo-img:hover {
  transform: scale(1.03);
  border-color: var(--border-hover);
}

/* Sections */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 17px;
}

/* Features */
.features {
  padding: 80px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(124,58,237,0.15), rgba(236,72,153,0.15));
  border-radius: var(--radius-sm);
  color: var(--primary-light);
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Pricing */
.pricing {
  padding: 80px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.pricing-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color 0.2s;
}

.pricing-card:hover {
  border-color: var(--border-hover);
}

.pricing-card.popular {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.popular-badge {
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-header {
  margin-bottom: 24px;
}

.pricing-header h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.pricing-price span {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
}

.pricing-header p {
  font-size: 13px;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  margin-bottom: 24px;
  flex: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features li svg {
  flex-shrink: 0;
  color: var(--success);
}

.pricing-extra {
  text-align: center;
  margin-top: 32px;
  color: var(--text-dim);
  font-size: 13px;
}

/* Testimonials */
.testimonials {
  padding: 80px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.testimonial {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.testimonial > p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: white;
}

.author-name {
  font-size: 14px;
  font-weight: 600;
}

.author-role {
  font-size: 13px;
  color: var(--text-dim);
}

/* CTA Section */
.cta-section {
  text-align: center;
  padding: 100px 32px;
  max-width: 600px;
  margin: 0 auto;
}

.cta-section h2 {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.cta-section p {
  color: var(--text-muted);
  font-size: 17px;
  margin-bottom: 32px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 60px 32px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-dim);
  max-width: 260px;
}

.footer-links h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  padding: 6px 0;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-dim);
}

/* Responsive */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .navbar { padding: 0 20px; }
  .nav-links { display: none; }
  .hero { padding: 120px 20px 60px; }
  .demo { grid-template-columns: 1fr; padding: 0 20px 60px; }
  .features, .pricing, .testimonials { padding: 60px 20px; }
  .features-grid, .pricing-grid, .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { gap: 32px; }
  .hero-cta { flex-direction: column; align-items: center; }
  .btn-lg { width: 100%; max-width: 280px; }
}