:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-accent: #10b981;
  --color-dark: #0f172a;
  --color-gray: #64748b;
  --color-light: #f1f5f9;
  --max-width: 1100px;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
}
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--color-dark);
}
.site-header nav a {
  margin-left: 2rem;
  text-decoration: none;
  color: var(--color-gray);
  font-weight: 500;
  transition: color 0.2s;
}
.site-header nav a:hover {
  color: var(--color-primary);
}

/* Hero */
.hero {
  text-align: center;
  padding: 5rem 0 4rem;
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
}
.badge {
  display: inline-block;
  background: #dbeafe;
  color: var(--color-primary);
  padding: 0.375rem 1rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  margin: 0 0 1.5rem;
  line-height: 1.15;
  color: var(--color-dark);
}
.hero-sub {
  font-size: 1.25rem;
  color: var(--color-gray);
  max-width: 600px;
  margin: 0 auto 2rem;
}
.hero-sub strong {
  color: var(--color-primary);
}
.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}
.stat {
  text-align: center;
}
.stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}
.stat-label {
  font-size: 0.875rem;
  color: var(--color-gray);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}
.btn.primary {
  background: var(--color-primary);
  color: white;
}
.btn.primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}
.btn.secondary {
  background: var(--color-light);
  color: var(--color-dark);
}
.btn.secondary:hover {
  background: #e2e8f0;
}
.btn.large {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

/* Sections */
section {
  padding: 5rem 0;
}
section h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  text-align: center;
}
.section-sub {
  text-align: center;
  color: var(--color-gray);
  font-size: 1.125rem;
  margin: 0 0 3rem;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
}

/* Benefits */
.benefits {
  background: var(--color-surface);
}
.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}
.benefit-card {
  background: var(--color-bg);
  padding: 2rem;
  border-radius: var(--radius);
  transition: transform 0.2s, box-shadow 0.2s;
}
.benefit-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}
.benefit-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.benefit-card h3 {
  font-size: 1.25rem;
  margin: 0 0 0.75rem;
  font-weight: 600;
}
.benefit-card p {
  margin: 0;
  color: var(--color-gray);
  font-size: 0.95rem;
}

/* How It Works */
.how-it-works {
  background: var(--color-bg);
}
.steps {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  max-width: 900px;
  margin: 0 auto;
}
.step {
  text-align: center;
  padding: 1.5rem;
}
.step-num {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1rem;
}
.step h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}
.step p {
  margin: 0;
  color: var(--color-gray);
}

/* Pricing */
.pricing {
  background: var(--color-surface);
}
.plans {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  max-width: 700px;
  margin: 0 auto;
}
.plan {
  background: var(--color-bg);
  border: 2px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  position: relative;
}
.plan.featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}
.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}
.plan h3 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
}
.plan .price {
  font-size: 3rem;
  font-weight: 700;
  margin: 0;
  color: var(--color-dark);
}
.plan .price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-gray);
}
.price-note {
  color: var(--color-gray);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}
.plan ul {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  text-align: left;
}
.plan li {
  padding: 0.5rem 0;
  border-bottom: 1px solid #e2e8f0;
  color: var(--color-gray);
}
.plan li:last-child {
  border-bottom: none;
}
.plan .btn {
  width: 100%;
}
.pricing-note {
  text-align: center;
  color: var(--color-gray);
  font-size: 0.875rem;
  margin-top: 2rem;
}

/* CTA */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1d4ed8 100%);
  color: white;
  text-align: center;
}
.cta h2 {
  color: white;
}
.cta p {
  font-size: 1.25rem;
  opacity: 0.9;
  margin: 0 0 2rem;
}
.cta .btn.primary {
  background: white;
  color: var(--color-primary);
}
.cta .btn.primary:hover {
  background: #f8fafc;
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 3rem 0;
  background: var(--color-dark);
  color: var(--color-gray);
}
.site-footer p {
  margin: 0;
}
.footer-note {
  margin-top: 0.5rem !important;
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 640px) {
  .site-header .container {
    flex-direction: column;
    gap: 1rem;
  }
  .site-header nav {
    display: flex;
    gap: 1rem;
  }
  .site-header nav a {
    margin-left: 0;
  }
  .hero-stats {
    gap: 2rem;
  }
  .stat-value {
    font-size: 1.5rem;
  }
}