:root {
  --primary: #1877f2;
  --primary-dark: #0a5dc2;
  --primary-light: #e8f0fe;
  --text: #1c1e21;
  --text-secondary: #65676b;
  --bg: #ffffff;
  --bg-alt: #f8f9fb;
  --border: #e4e6ea;
  --radius: 12px;
  --radius-lg: 20px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
}

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

.nav-links a {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.15s;
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 20px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  transition: background 0.2s, transform 0.2s;
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* Hero */
.hero {
  position: relative;
  padding: 160px 0 100px;
  text-align: center;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 16px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #1877f2, #0a5dc2, #6366f1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  max-width: 560px;
  margin: 0 auto 36px;
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 56px;
}

.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: 32px;
  padding: 20px 40px;
  border-radius: var(--radius-lg);
  background: var(--bg-alt);
  border: 1px solid var(--border);
}

.stat strong {
  display: block;
  font-size: 28px;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.stat span {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(24,119,242,0.08) 0%, transparent 70%);
  pointer-events: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 700;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-lg {
  height: 52px;
  padding: 0 28px;
  font-size: 16px;
}

.btn-primary {
  background: linear-gradient(135deg, #1877f2, #0a5dc2);
  color: #fff;
  box-shadow: 0 4px 14px rgba(24,119,242,0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(24,119,242,0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background: var(--bg);
  color: var(--text);
  border: 2px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

.btn-full { width: 100%; }

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

.section-header h2 {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -0.8px;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 18px;
  color: var(--text-secondary);
}

/* Features */
.features {
  padding: 100px 0;
  background: var(--bg-alt);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(24,119,242,0.3);
  box-shadow: 0 8px 30px rgba(24,119,242,0.08);
  transform: translateY(-4px);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Pricing */
.pricing {
  padding: 100px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.price-card {
  position: relative;
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 2px solid var(--border);
  transition: all 0.2s ease;
}

.price-card:hover {
  border-color: rgba(24,119,242,0.3);
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
}

.price-card.popular {
  border-color: var(--primary);
  box-shadow: 0 8px 40px rgba(24,119,242,0.15);
  transform: scale(1.04);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  height: 28px;
  padding: 0 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1877f2, #0a5dc2);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.price-header h3 {
  font-size: 20px;
  font-weight: 800;
}

.price-header p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.price-amount {
  margin: 24px 0;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.price-amount strong {
  font-size: 48px;
  font-weight: 900;
  letter-spacing: -2px;
  color: var(--text);
}

.price-amount strong span {
  font-size: 20px;
  letter-spacing: 0;
}

.price-unit {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.price-features {
  margin-bottom: 28px;
}

.price-features li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.price-features li::before {
  content: '';
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #d1fae5;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%23059669' stroke-width='3' stroke-linecap='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 10px;
}

/* How It Works */
.how-it-works {
  padding: 100px 0;
  background: var(--bg-alt);
}

.steps-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.step-card {
  flex: 1;
  max-width: 280px;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 1px solid var(--border);
  text-align: center;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1877f2, #0a5dc2);
  color: #fff;
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-arrow {
  color: #c4c8cc;
  flex-shrink: 0;
}

/* FAQ */
.faq {
  padding: 100px 0;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item summary {
  padding: 20px 0;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::after {
  content: '+';
  font-size: 22px;
  font-weight: 300;
  color: var(--text-secondary);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding-bottom: 20px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* CTA */
.cta-section {
  padding: 80px 0;
}

.cta-card {
  padding: 64px 40px;
  border-radius: 24px;
  background: linear-gradient(135deg, #1877f2, #0a5dc2);
  text-align: center;
  color: #fff;
}

.cta-card h2 {
  font-size: 32px;
  font-weight: 900;
  margin-bottom: 12px;
}

.cta-card p {
  font-size: 17px;
  opacity: 0.9;
  margin-bottom: 32px;
}

.cta-note {
  display: block;
  margin-top: 16px;
  font-size: 13px;
  opacity: 0.7;
}

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

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 800;
}

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

/* Responsive */
@media (max-width: 900px) {
  .nav-links { display: none; }

  .hero h1 { font-size: 38px; }
  .hero-desc { font-size: 16px; }

  .hero-actions {
    flex-direction: column;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
    padding: 24px;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .price-card.popular {
    transform: none;
  }

  .steps-grid {
    flex-direction: column;
  }

  .step-arrow {
    transform: rotate(90deg);
  }

  .step-card {
    max-width: 100%;
  }

  .section-header h2 { font-size: 28px; }

  .cta-card {
    padding: 40px 24px;
  }

  .cta-card h2 { font-size: 24px; }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
  }
}