:root {
  --green-50: #ecfdf5;
  --green-100: #d1fae5;
  --green-500: #10b981;
  --green-600: #059669;
  --green-700: #047857;
  --green-800: #065f46;
  --green-900: #064e3b;
  --teal-500: #14b8a6;
  --teal-600: #0d9488;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --white: #ffffff;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
}

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

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--gray-800);
  line-height: 1.6;
  background: var(--white);
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--green-800);
  text-decoration: none;
}

.nav-brand .logo { width: 36px; height: 36px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: var(--gray-600);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--green-600); }

.btn-nav {
  background: var(--green-600) !important;
  color: var(--white) !important;
  padding: 8px 20px !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
}

.btn-nav:hover { background: var(--green-700) !important; }

.btn-nav-outline {
  border: 1.5px solid var(--green-600) !important;
  color: var(--green-600) !important;
  padding: 7px 20px !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--gray-700);
  transition: 0.3s;
}

/* Hero */
.hero {
  padding: 140px 0 80px;
  text-align: center;
  background: linear-gradient(135deg, var(--green-50) 0%, var(--white) 50%, #f0fdfa 100%);
}

.badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--green-100);
  color: var(--green-700);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.15;
  color: var(--gray-900);
  margin-bottom: 20px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-text {
  font-size: 1.2rem;
  color: var(--gray-500);
  max-width: 640px;
  margin: 0 auto 32px;
}

.hero-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--green-600);
  color: var(--white);
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
  font-size: 1rem;
}

.btn-primary:hover {
  background: var(--green-700);
  transform: translateY(-1px);
}

.btn-outline {
  display: inline-block;
  padding: 14px 32px;
  border: 1.5px solid var(--gray-300);
  color: var(--gray-700);
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s;
  font-size: 1rem;
}

.btn-outline:hover {
  border-color: var(--green-500);
  color: var(--green-600);
}

/* Stats */
.stats {
  padding: 48px 0;
  background: var(--white);
  border-bottom: 1px solid var(--gray-100);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--green-600);
}

.stat-label {
  display: block;
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-top: 4px;
}

/* Features */
.features {
  padding: 80px 0;
  background: var(--gray-50);
}

.features h2, .audience h2, .pricing h2, .contact h2 {
  text-align: center;
  font-size: 2rem;
  color: var(--gray-900);
  margin-bottom: 48px;
}

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

.feature-card {
  background: var(--white);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--gray-900);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* Audience */
.audience {
  padding: 80px 0;
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.audience-card {
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}

.audience-card h3 {
  font-size: 1.3rem;
  margin-bottom: 16px;
  color: var(--green-700);
}

.audience-card ul {
  list-style: none;
}

.audience-card li {
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  color: var(--gray-600);
}

.audience-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green-500);
  font-weight: 700;
}

/* Contact */
.contact {
  padding: 80px 0;
  text-align: center;
}

.contact p {
  color: var(--gray-500);
  margin-bottom: 32px;
  font-size: 1.1rem;
}

.contact-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  padding: 64px 0 32px;
  background: var(--gray-900);
  color: var(--gray-400);
}

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

.footer h4 {
  color: var(--white);
  margin-bottom: 16px;
}

.footer a {
  display: block;
  color: var(--gray-400);
  text-decoration: none;
  padding: 4px 0;
  transition: color 0.2s;
}

.footer a:hover { color: var(--green-400); }

.footer-bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid var(--gray-200);
    gap: 12px;
  }

  .nav-links.active { display: flex; }

  .hero h1 { font-size: 2rem; }
  .hero { padding: 100px 0 60px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .features-grid { grid-template-columns: 1fr; }
  .audience-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card.featured { transform: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}