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

html {
  height: 100%;
  width: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: #333;
  line-height: 1.6;
}

.top-nav {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo .logo {
  height: 40px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: #7f8c8d;
  text-decoration: none;
  font-weight: 500;
  font-size: 1.1rem;
  padding: 0.5rem 1rem;
  border-radius: 25px;
  transition: all 0.3s ease;
}

.nav-link:hover {
  color: #2c3e50;
  background: #f8f9fa;
}

.nav-link.active {
  color: white;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.nav-link.text-btn-nav {
  color: white;
  background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
  font-weight: 600;
}

.nav-link.text-btn-nav:hover {
  color: white;
  background: linear-gradient(135deg, #229954 0%, #27ae60 100%);
  transform: translateY(-1px);
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

header {
  text-align: center;
  margin-bottom: 3rem;
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

h1 {
  font-size: 2.5rem;
  color: #2c3e50;
  margin-bottom: 2rem;
  font-weight: 700;
}

.hero-image {
  margin: 2rem 0;
  text-align: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  max-height: 400px;
  object-fit: cover;
}

.subtitle {
  font-size: 1.3rem;
  color: #7f8c8d;
  font-weight: 400;
}

.product-article {
  background: white;
  padding: 2.5rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.intro {
  font-size: 1.2rem;
  color: #34495e;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.benefits {
  margin: 2rem 0;
}

.benefits h2 {
  color: #2c3e50;
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.benefits ul {
  list-style: none;
  padding-left: 0;
}

.benefits li {
  background: #ecf0f1;
  margin: 0.5rem 0;
  padding: 0.8rem 1.2rem;
  border-radius: 8px;
  border-left: 4px solid #3498db;
  font-size: 1.1rem;
}

.benefits li::before {
  content: "✓ ";
  color: #27ae60;
  font-weight: bold;
  margin-right: 0.5rem;
}

.features {
  margin: 2rem 0;
  padding: 1.5rem;
  background: #f8f9fa;
  border-radius: 10px;
  text-align: center;
}

.features p {
  font-size: 1.2rem;
  color: #2c3e50;
}

.pricing {
  margin: 2rem 0;
  padding: 2rem;
  background: #f8f9fa;
  border-radius: 15px;
  text-align: center;
  border: 2px solid #ecf0f1;
}

.pricing p {
  font-size: 1.4rem;
  color: #2c3e50;
  font-weight: 600;
  line-height: 1.8;
}

.pricing .price-original {
  background: #3498db;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: bold;
  margin: 0 0.5rem;
}

.pricing .price-sale {
  background: #27ae60;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: bold;
  margin: 0 0.5rem;
}

.cta {
  text-align: center;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 2px solid #ecf0f1;
}

.cta p {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: #2c3e50;
}

.contact-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-btn, .text-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  padding: 1rem 2rem;
  font-size: 1.2rem;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
}

.text-btn {
  background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
}

.contact-btn:hover, .text-btn:hover {
  transform: translateY(-2px);
}

.contact-btn:hover {
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.text-btn:hover {
  box-shadow: 0 10px 25px rgba(46, 204, 113, 0.4);
}

footer {
  background: white;
  margin-top: 3rem;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: #7f8c8d;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #2c3e50;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: #7f8c8d;
  transition: color 0.2s ease, transform 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #f8f9fa;
}

.social-links a:hover {
  color: #2c3e50;
  transform: translateY(-2px);
  background: #ecf0f1;
}

.terms-section {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #ecf0f1;
}

.terms-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.terms-section h2 {
  color: #2c3e50;
  font-size: 1.3rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.terms-section p {
  color: #34495e;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.terms-section ul {
  list-style: none;
  padding-left: 0;
  margin: 1rem 0;
}

.terms-section li {
  background: #f8f9fa;
  margin: 0.5rem 0;
  padding: 0.8rem 1.2rem;
  border-radius: 8px;
  border-left: 3px solid #3498db;
  color: #2c3e50;
}

.terms-section li::before {
  content: "• ";
  color: #3498db;
  font-weight: bold;
  margin-right: 0.5rem;
}

@media (max-width: 768px) {
  .nav-container {
    padding: 0 1rem;
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-logo .logo {
    height: 35px;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .nav-link {
    font-size: 1rem;
    padding: 0.4rem 0.8rem;
  }
  
  .container {
    padding: 1rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  .hero-image {
    margin: 1.5rem 0;
  }
  
  .hero-image img {
    max-height: 300px;
  }
  
  .subtitle {
    font-size: 1.1rem;
  }
  
  header, .product-article, footer {
    padding: 1.5rem;
  }
  
  .contact-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .contact-btn, .text-btn {
    width: 100%;
    max-width: 250px;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }
}