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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: bold;
  color: #e74c3c;
}

.logo svg {
  color: #e74c3c;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-links a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: #e74c3c;
}

/* Hero Section */
.hero {
  margin-top: 70px;
  padding: 80px 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: #6c757d;
  margin-bottom: 30px;
  line-height: 1.5;
}

.hero-highlights {
  display: flex;
  gap: 30px;
  margin-bottom: 40px;
}

.highlight {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #e74c3c;
  font-weight: 600;
}

.highlight svg {
  color: #e74c3c;
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.cta-button {
  background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
  color: white;
  border: none;
  padding: 15px 30px;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
}

.cta-button.large {
  padding: 20px 40px;
  font-size: 1.2rem;
}

/* Features Section */
.features {
  padding: 100px 0;
  background: #fff;
}

.features h2 {
  text-align: center;
  font-size: 2.5rem;
  color: #2c3e50;
  margin-bottom: 60px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 40px;
}

.feature-card {
  background: #f8f9fa;
  padding: 40px 30px;
  border-radius: 15px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
  color: #e74c3c;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.4rem;
  color: #2c3e50;
  margin-bottom: 15px;
}

.feature-card p {
  color: #6c757d;
  line-height: 1.6;
}

/* Specifications Section */
.specifications {
  padding: 100px 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.specifications h2 {
  text-align: center;
  font-size: 2.5rem;
  color: #2c3e50;
  margin-bottom: 60px;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.spec-category {
  background: #fff;
  padding: 40px 30px;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.spec-category h3 {
  font-size: 1.5rem;
  color: #e74c3c;
  margin-bottom: 25px;
  text-align: center;
}

.spec-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid #e9ecef;
}

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

.spec-label {
  color: #6c757d;
  font-weight: 500;
}

.spec-value {
  color: #2c3e50;
  font-weight: 600;
}

/* Accessories Section */
.accessories {
  padding: 100px 0;
  background: #fff;
}

.accessories h2 {
  text-align: center;
  font-size: 2.5rem;
  color: #2c3e50;
  margin-bottom: 60px;
}

.accessories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 40px;
  max-width: 900px;
  margin: 0 auto;
}

.accessory-card {
  background: #f8f9fa;
  padding: 50px 40px;
  border-radius: 15px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.accessory-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.accessory-icon {
  color: #e74c3c;
  margin-bottom: 25px;
}

.accessory-card h3 {
  font-size: 1.5rem;
  color: #2c3e50;
  margin-bottom: 15px;
}

.accessory-card p {
  color: #6c757d;
  line-height: 1.6;
}

/* CTA Section */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
  color: white;
  text-align: center;
}

.cta-content h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.cta-content p {
  font-size: 1.2rem;
  margin-bottom: 40px;
  opacity: 0.9;
}

.cta-section .cta-button {
  background: white;
  color: #e74c3c;
}

.cta-section .cta-button:hover {
  background: #f8f9fa;
}

/* Footer */
footer {
  background: #2c3e50;
  color: white;
  padding: 60px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  color: #e74c3c;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section ul li a {
  color: #bdc3c7;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section ul li a:hover {
  color: white;
}

.footer-section .logo {
  color: #e74c3c;
  margin-bottom: 15px;
}

.footer-section p {
  color: #bdc3c7;
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid #34495e;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.certifications {
  display: flex;
  gap: 15px;
}

.certifications span {
  background: #34495e;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    height: auto;
    padding: 15px 20px;
  }
  
  .nav-links {
    margin-top: 15px;
    gap: 20px;
  }
  
  .hero {
    margin-top: 120px;
    padding: 60px 0;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-highlights {
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .specs-grid {
    grid-template-columns: 1fr;
  }
  
  .accessories-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
  
  .features,
  .specifications,
  .accessories,
  .cta-section {
    padding: 60px 0;
  }
  
  .features h2,
  .specifications h2,
  .accessories h2,
  .cta-content h2 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .feature-card,
  .spec-category,
  .accessory-card {
    padding: 30px 20px;
  }
  
  .cta-content h2 {
    font-size: 1.8rem;
  }
  
  .cta-content p {
    font-size: 1rem;
  }
}