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

:root {
  --primary: #ff6b35;
  --primary-dark: #e85a28;
  --primary-light: #ff8555;
  --secondary: #004e89;
  --accent: #ffd60a;
  --dark: #1a1a1a;
  --darker: #0a0a0a;
  --gray: #333333;
  --gray-light: #666666;
  --gray-lighter: #999999;
  --text: #2d2d2d;
  --text-light: #5a5a5a;
  --bg: #ffffff;
  --bg-light: #f8f8f8;
  --bg-dark: #1a1a1a;
  --border: #e0e0e0;
  --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #ff8555 100%);
  --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #333333 100%);
  --shadow-sm: 0 2px 8px rgba(255, 107, 53, 0.1);
  --shadow: 0 4px 16px rgba(255, 107, 53, 0.15);
  --shadow-lg: 0 8px 32px rgba(255, 107, 53, 0.2);
  --shadow-xl: 0 16px 48px rgba(255, 107, 53, 0.25);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.navbar {
  padding: 16px 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: var(--transition);
}

.logo:hover {
  transform: translateX(4px);
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
}

.icon-flash {
  font-size: 28px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-name {
  font-size: 24px;
  font-weight: 900;
  color: var(--dark);
  letter-spacing: 1px;
  line-height: 1;
}

.logo-slogan {
  font-size: 10px;
  color: var(--gray-lighter);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-link {
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(255, 107, 53, 0.05);
}

.nav-link.active {
  color: white;
  background: var(--gradient-primary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-nav {
  padding: 10px 24px;
  background: var(--dark);
  color: white;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
  transition: var(--transition);
}

.btn-nav:hover {
  background: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  inset: 0;
  z-index: 0;
}

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

.hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 107, 53, 0.9) 0%,
    rgba(26, 26, 26, 0.85) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 60px 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  color: white;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 32px;
  animation: fadeInDown 0.8s ease-out;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-size: 68px;
  font-weight: 900;
  color: white;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -2px;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.text-highlight {
  color: var(--accent);
  font-size: 48px;
}

.hero-description {
  font-size: 22px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
  margin-bottom: 48px;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-bottom: 48px;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 42px;
  font-weight: 900;
  color: white;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 12px;
  transition: var(--transition);
}

.btn-primary {
  background: white;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.4);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
  transform: translateY(-4px);
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-10px);
  }
}

.mouse {
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 20px;
  position: relative;
}

.mouse::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 4px;
  animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
  0% {
    opacity: 0;
    top: 8px;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    top: 24px;
  }
}

.section-header {
  margin-bottom: 60px;
}

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

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 107, 53, 0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  border-radius: 6px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-title {
  font-size: 44px;
  font-weight: 900;
  color: var(--dark);
  margin-bottom: 12px;
  letter-spacing: -1.5px;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-light);
  line-height: 1.6;
}

.about {
  padding: 120px 0;
  background: var(--bg-light);
}

.about-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: var(--shadow-xl);
}

.image-decoration {
  position: absolute;
  top: -30px;
  right: -30px;
  z-index: -1;
}

.decoration-circle {
  width: 200px;
  height: 200px;
  background: var(--gradient-primary);
  opacity: 0.2;
  border-radius: 50%;
}

.about-text {
  margin: 32px 0;
}

.about-text p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.feature-item {
  padding: 24px;
  background: white;
  border-radius: 16px;
  border: 2px solid var(--border);
  transition: var(--transition);
  text-align: center;
}

.feature-item:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.feature-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.feature-item h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.feature-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

.services {
  padding: 120px 0;
  background: var(--bg);
}

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

.service-card {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  border: 2px solid var(--border);
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--primary);
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.service-image {
  position: relative;
  height: 240px;
  overflow: hidden;
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.service-card:hover .service-image img {
  transform: scale(1.1);
}

.service-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26, 26, 26, 0.8) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover .service-overlay {
  opacity: 1;
}

.service-link {
  padding: 10px 24px;
  background: white;
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
  transition: var(--transition);
}

.service-link:hover {
  background: var(--primary);
  color: white;
}

.service-content {
  padding: 32px;
}

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

.service-content h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 12px;
}

.service-content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-list li {
  padding-left: 24px;
  font-size: 14px;
  color: var(--text-light);
  position: relative;
}

.service-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 900;
}

.products {
  padding: 120px 0;
  background: var(--bg-light);
}

.products-showcase {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.product-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding: 48px;
  background: white;
  border-radius: 24px;
  border: 2px solid var(--border);
  align-items: center;
}

.product-image img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
}

.product-label {
  display: inline-block;
  padding: 6px 16px;
  background: var(--gradient-primary);
  color: white;
  font-size: 12px;
  font-weight: 700;
  border-radius: 6px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.product-info h3 {
  font-size: 36px;
  font-weight: 900;
  color: var(--dark);
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.product-info p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 24px;
}

.product-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}

.highlight {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
}

.highlight-icon {
  width: 20px;
  height: 20px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 900;
}

.btn-product {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  background: var(--gradient-primary);
  color: white;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 12px;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.btn-product:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.product-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  border: 2px solid var(--border);
  transition: var(--transition);
}

.product-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

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

.product-card-content {
  padding: 24px;
}

.product-card-content h4 {
  font-size: 20px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.product-card-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 16px;
}

.product-card-link {
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
}

.product-card-link:hover {
  color: var(--primary-dark);
}

.cases {
  padding: 120px 0;
  background: var(--bg);
}

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

.case-card {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  border: 2px solid var(--border);
  transition: var(--transition);
}

.case-card:hover {
  border-color: var(--primary);
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.case-image {
  position: relative;
  height: 240px;
  overflow: hidden;
}

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

.case-content {
  padding: 32px;
}

.case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 107, 53, 0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  border-radius: 4px;
  margin-bottom: 12px;
}

.case-content h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 12px;
}

.case-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

.case-results {
  display: flex;
  gap: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.result-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.result-value {
  font-size: 28px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}

.result-label {
  font-size: 12px;
  color: var(--text-light);
  font-weight: 600;
}

.news {
  padding: 120px 0;
  background: var(--bg-light);
}

.news-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
}

.news-card {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  border: 2px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.news-card.featured {
  grid-row: span 2;
}

.news-image {
  position: relative;
  height: 240px;
  overflow: hidden;
}

.news-card.featured .news-image {
  height: 100%;
  flex: 1;
}

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

.news-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 16px;
  background: var(--primary);
  color: white;
  font-size: 12px;
  font-weight: 700;
  border-radius: 6px;
}

.news-content {
  padding: 24px;
}

.news-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
}

.news-date,
.news-category {
  font-size: 13px;
  color: var(--gray-lighter);
  font-weight: 600;
}

.news-content h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 12px;
  line-height: 1.4;
}

.news-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.news-link {
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
}

.news-link:hover {
  color: var(--primary-dark);
}

.contact {
  padding: 120px 0;
  background: var(--bg);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
  margin-bottom: 32px;
}

.contact-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--bg-light);
  border-radius: 16px;
  border: 2px solid var(--border);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.contact-icon {
  font-size: 36px;
  flex-shrink: 0;
}

.contact-text h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.contact-text p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

.social-links h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
}

.social-icons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.social-icon {
  padding: 10px 20px;
  background: white;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  border: 2px solid var(--border);
  transition: var(--transition);
}

.social-icon:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-2px);
}

.contact-form-container {
  padding: 40px;
  background: var(--bg-light);
  border-radius: 24px;
  border: 2px solid var(--border);
}

.contact-form-container h3 {
  font-size: 28px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.form-description {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: white;
  border: 2px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  color: var(--text);
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.btn-submit {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  background: var(--gradient-primary);
  color: white;
  font-size: 16px;
  font-weight: 700;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 80px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 60px;
  margin-bottom: 50px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-logo .logo-name {
  color: white;
}

.footer-description {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 16px;
}

.footer-website {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
}

.footer-links-group {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.footer-section h4 {
  font-size: 16px;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

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

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

.footer-section a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: var(--transition);
}

.footer-section a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 6px;
}

.footer-keywords {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
}

.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  padding: 14px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.8);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.back-to-top:hover {
  transform: scale(1.1) translateY(-4px);
  box-shadow: var(--shadow-xl);
}

@media (max-width: 1200px) {
  .services-grid {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  .nav-list {
    display: none;
  }

  .menu-btn {
    display: flex;
  }

  .hero-title {
    font-size: 52px;
  }

  .about-wrapper,
  .product-main,
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .news-card.featured {
    grid-row: span 1;
  }

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

  .footer-links-group {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 40px;
  }

  .hero-description {
    font-size: 18px;
  }

  .hero-stats {
    gap: 32px;
  }

  .stat-number {
    font-size: 32px;
  }

  .section-title {
    font-size: 32px;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .product-highlights {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .cases-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-links-group {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 32px;
  }

  .text-highlight {
    font-size: 32px;
  }

  .hero-description {
    font-size: 16px;
  }

  .section-title {
    font-size: 28px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

  .back-to-top {
    bottom: 24px;
    right: 24px;
  }
}