:root {
  --primary: #0066cc;
  --primary-light: #00a3ff;
  --primary-dark: #004d99;
  --secondary: #f0f4f8;
  --text-dark: #1a1a1a;
  --text-light: #666666;
  --border: #e0e0e0;
  --bg-light: #f9f9f9;
  --success: #00cc66;
  --warning: #ffaa00;
  --error: #cc0000;
  --spacing-unit: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  color: var(--text-dark);
  background-color: #ffffff;
  line-height: 1.6;
  font-size: 16px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: var(--primary-dark);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-unit);
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.25rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-unit);
  color: var(--text-light);
}

.header {
  background-color: #ffffff;
  border-bottom: 1px solid var(--border);
  padding: calc(var(--spacing-unit) * 2) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 calc(var(--spacing-unit) * 2);
}

.logo-section {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 2);
}

.logo-section a {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 2);
  color: inherit;
  text-decoration: none;
}

.logo {
  width: 50px;
  height: 50px;
}

.brand-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
}

.main-content {
  max-width: 1400px;
  margin: 0 auto;
}

section {
  padding: calc(var(--spacing-unit) * 12) calc(var(--spacing-unit) * 2);
}

.centered-section {
  text-align: center;
}

.centered-section .section-header {
  text-align: center;
}

.centered-section .description-content {
  text-align: left;
}

.section-header {
  text-align: center;
  margin-bottom: calc(var(--spacing-unit) * 8);
}

.section-header h2 {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing-unit) * 4);
  align-items: center;
  padding: calc(var(--spacing-unit) * 12) calc(var(--spacing-unit) * 2);
  min-height: 500px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit) * 3);
  justify-content: center;
}

.hero-content h1 {
  color: var(--text-dark);
  line-height: 1.3;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.hero-content p {
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.cta-button {
  align-self: flex-start;
  padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
  min-width: 180px;
}

.cta-button:hover {
  background-color: var(--primary-dark);
}

.hero-image {
  width: 100%;
  height: 450px;
  overflow: hidden;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--secondary);
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.centered-section {
  text-align: center;
}

.centered-section .section-header {
  text-align: center;
}

.centered-section .description-content {
  text-align: left;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: calc(var(--spacing-unit) * 3);
}

.feature-card {
  text-align: center;
  padding: calc(var(--spacing-unit) * 3);
  background-color: var(--secondary);
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto calc(var(--spacing-unit) * 2);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-card h3 {
  margin-bottom: calc(var(--spacing-unit) * 1);
  color: var(--text-dark);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-light);
}

.description {
  background-color: var(--bg-light);
}

.description-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing-unit) * 4);
  align-items: center;
}

.description-text p {
  margin-bottom: calc(var(--spacing-unit) * 2);
  line-height: 1.8;
}

.description-image {
  width: 100%;
  height: 300px;
  border-radius: 8px;
  overflow: hidden;
}

.description-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: calc(var(--spacing-unit) * 3);
}

.equipment-card {
  background-color: var(--secondary);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s ease;
}

.equipment-card:hover {
  transform: translateY(-4px);
}

.equipment-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.equipment-card h3 {
  padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2) 0;
  color: var(--text-dark);
}

.equipment-card p {
  padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2);
}

.products {
  background-color: var(--bg-light);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: calc(var(--spacing-unit) * 3);
}

.product-card {
  background-color: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.product-card:hover {
  box-shadow: 0 4px 16px rgba(0, 102, 204, 0.1);
}

.product-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background-color: #f0f0f0;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-info {
  padding: calc(var(--spacing-unit) * 2);
}

.product-info h3 {
  color: var(--text-dark);
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.product-info p {
  font-size: 0.95rem;
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.product-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.product-button {
  display: inline-block;
  padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
  background-color: var(--primary);
  color: white;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background-color 0.3s ease;
}

.product-button:hover {
  background-color: var(--primary-dark);
}

.benefits-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: calc(var(--spacing-unit) * 3);
}

.benefit-item {
  text-align: center;
  padding: calc(var(--spacing-unit) * 2);
}

.benefit-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto calc(var(--spacing-unit) * 2);
}

.benefit-icon svg {
  width: 100%;
  height: 100%;
}

.benefit-item h3 {
  color: var(--text-dark);
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.benefit-item p {
  font-size: 0.95rem;
  color: var(--text-light);
}

.testimonials {
  background-color: var(--secondary);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: calc(var(--spacing-unit) * 3);
}

.testimonial-card {
  background-color: white;
  padding: calc(var(--spacing-unit) * 3);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.testimonial-header {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.testimonial-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testimonial-header h4 {
  margin-bottom: 0;
  color: var(--text-dark);
}

.testimonial-header p {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 0;
}

.testimonial-text {
  color: var(--text-light);
  line-height: 1.7;
}

.contacts {
  background-color: white;
}

.contacts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: calc(var(--spacing-unit) * 4);
}

.contact-item {
  text-align: center;
  padding: calc(var(--spacing-unit) * 2);
}

.contact-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto calc(var(--spacing-unit) * 2);
}

.contact-icon svg {
  width: 100%;
  height: 100%;
}

.contact-item h3 {
  color: var(--text-dark);
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.contact-item a,
.contact-item p {
  font-size: 1rem;
  color: var(--text-light);
}

.contact-item a {
  color: var(--primary);
  font-weight: 600;
}

.footer {
  background-color: var(--text-dark);
  color: white;
  padding: calc(var(--spacing-unit) * 8) calc(var(--spacing-unit) * 2);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 2fr 1fr;
  gap: calc(var(--spacing-unit) * 4);
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.footer-brand {
  max-width: 300px;
}

.footer-nav-columns {
  display: flex;
  gap: calc(var(--spacing-unit) * 4);
}

.footer-nav-column ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-nav-column li {
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.footer-section h4 {
  color: white;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.footer-section p,
.footer-section li {
  color: #cccccc;
  font-size: 0.95rem;
  margin-bottom: calc(var(--spacing-unit) * 1);
}

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

.footer-section a {
  color: #cccccc;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding-top: calc(var(--spacing-unit) * 3);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: #999999;
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  .hero {
    grid-template-columns: 1fr;
    padding: calc(var(--spacing-unit) * 8) calc(var(--spacing-unit) * 2);
    min-height: auto;
  }

  .hero-image {
    height: 300px;
    order: -1;
  }

  .description-content {
    grid-template-columns: 1fr;
  }

  .description-image {
    height: 250px;
  }

  section {
    padding: calc(var(--spacing-unit) * 8) calc(var(--spacing-unit) * 2);
  }

  .features-grid,
  .equipment-grid,
  .products-grid,
  .benefits-list,
  .testimonials-grid,
  .contacts-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-nav-columns {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1rem;
  }

  .hero-content h1 {
    margin-bottom: calc(var(--spacing-unit) * 2);
  }

  .cta-button {
    align-self: stretch;
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
  }

  section {
    padding: calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 1.5);
  }

  .section-header {
    margin-bottom: calc(var(--spacing-unit) * 4);
  }

  .logo {
    width: 40px;
    height: 40px;
  }

  .brand-name {
    font-size: 1.25rem;
  }

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

  .cta-button {
    align-self: center;
  }

  .footer-nav-columns {
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
  }
}