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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1a1a1a;
  line-height: 1.6;
  background: #fff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav {
  border-bottom: 1px solid #e5e5e5;
  padding: 20px 0;
  position: sticky;
  top: 0;
  background: #fff;
  z-index: 100;
}

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

.logo {
  font-size: 24px;
  font-weight: 700;
  color: #0a7ea4;
}

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

.nav-link {
  text-decoration: none;
  color: #666;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
  color: #0a7ea4;
}

.btn-primary {
  background: #0a7ea4;
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
  transition: background 0.2s, transform 0.1s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: #086a8a;
  transform: translateY(-1px);
}

.btn-large {
  padding: 16px 32px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
  text-align: center;
}

.hero {
  padding: 80px 0;
  background: linear-gradient(135deg, #f8fafb 0%, #ffffff 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-title {
  font-size: 52px;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  color: #1a1a1a;
}

.hero-subtitle {
  font-size: 20px;
  color: #666;
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-cta {
  margin-bottom: 32px;
}

.trust-badge {
  margin-top: 12px;
  color: #666;
  font-size: 14px;
}

.social-proof {
  display: flex;
  align-items: center;
  gap: 16px;
}

.rating {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stars {
  color: #ffa500;
  font-size: 18px;
}

.rating-text {
  color: #666;
  font-size: 14px;
}

.hero-img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.benefits {
  padding: 80px 0;
  background: #fff;
}

.section-title {
  font-size: 40px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 60px;
  color: #1a1a1a;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.benefit-card {
  text-align: center;
  padding: 32px 24px;
}

.benefit-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.benefit-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #1a1a1a;
}

.benefit-text {
  color: #666;
  line-height: 1.7;
}

.how-it-works {
  padding: 80px 0;
  background: #f8fafb;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.step {
  text-align: center;
}

.step-number {
  font-size: 48px;
  font-weight: 700;
  color: #0a7ea4;
  margin-bottom: 16px;
}

.step-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #1a1a1a;
}

.step-text {
  color: #666;
  line-height: 1.7;
}

.reviews {
  padding: 80px 0;
  background: #fff;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.review-card {
  background: #f8fafb;
  padding: 32px;
  border-radius: 12px;
  border: 1px solid #e5e5e5;
}

.review-stars {
  color: #ffa500;
  font-size: 18px;
  margin-bottom: 16px;
}

.review-text {
  color: #1a1a1a;
  margin-bottom: 20px;
  line-height: 1.7;
  font-style: italic;
}

.review-author {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.review-author strong {
  color: #1a1a1a;
}

.review-author span {
  color: #999;
  font-size: 14px;
}

.cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, #0a7ea4 0%, #086a8a 100%);
  color: #fff;
}

.cta-content {
  text-align: center;
}

.cta-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-subtitle {
  font-size: 20px;
  margin-bottom: 32px;
  opacity: 0.9;
}

.cta-section .btn-primary {
  background: #fff;
  color: #0a7ea4;
}

.cta-section .btn-primary:hover {
  background: #f0f0f0;
}

.footer {
  background: #1a1a1a;
  color: #fff;
  padding: 60px 0 24px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 40px;
}

.footer-col h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col p,
.footer-col a {
  color: #999;
  text-decoration: none;
  display: block;
  margin-bottom: 8px;
  line-height: 1.7;
}

.footer-col a:hover {
  color: #0a7ea4;
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid #333;
  color: #666;
}

.mobile-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px 24px;
  background: #fff;
  border-top: 1px solid #e5e5e5;
  z-index: 99;
}

.product-hero {
  padding: 60px 0 80px;
}

.breadcrumb {
  margin-bottom: 32px;
  color: #666;
  font-size: 14px;
}

.breadcrumb a {
  color: #0a7ea4;
  text-decoration: none;
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.product-main-image {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.product-title {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 16px;
  color: #1a1a1a;
}

.product-rating {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
}

.rating-count {
  color: #666;
  font-size: 14px;
}

.product-price {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.price-current {
  font-size: 36px;
  font-weight: 700;
  color: #1a1a1a;
}

.price-original {
  font-size: 24px;
  color: #999;
  text-decoration: line-through;
}

.price-save {
  background: #e8f5e9;
  color: #2e7d32;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
}

.product-description {
  color: #666;
  line-height: 1.7;
  margin-bottom: 32px;
  font-size: 16px;
}

.product-features {
  margin-bottom: 32px;
}

.feature-item {
  padding: 12px 0;
  color: #1a1a1a;
  font-size: 15px;
  border-bottom: 1px solid #e5e5e5;
}

.feature-item:last-child {
  border-bottom: none;
}

.product-cta {
  background: #f8fafb;
  padding: 32px;
  border-radius: 12px;
  border: 1px solid #e5e5e5;
}

.quantity-selector {
  margin-bottom: 20px;
}

.quantity-selector label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #1a1a1a;
}

.quantity-select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  font-size: 15px;
  background: #fff;
  cursor: pointer;
}

.trust-text {
  text-align: center;
  color: #666;
  font-size: 14px;
  margin-top: 12px;
}

.ingredients {
  padding: 80px 0;
  background: #f8fafb;
}

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

.ingredient-card {
  background: #fff;
  padding: 32px;
  border-radius: 12px;
  border: 1px solid #e5e5e5;
}

.ingredient-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #1a1a1a;
}

.ingredient-dose {
  color: #0a7ea4;
  font-weight: 600;
  margin-bottom: 12px;
  font-size: 14px;
}

.ingredient-card p {
  color: #666;
  line-height: 1.7;
}

.guarantee {
  padding: 80px 0;
  background: #fff;
}

.guarantee-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.guarantee-text {
  font-size: 18px;
  color: #666;
  line-height: 1.7;
  margin-bottom: 32px;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero-grid,
  .product-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-title {
    font-size: 36px;
  }
  
  .benefits-grid,
  .steps-grid,
  .reviews-grid,
  .ingredients-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .mobile-cta {
    display: block;
  }
  
  body {
    padding-bottom: 80px;
  }
}