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

:root {
  --primary-color: #0066FF;
  --secondary-color: #FF6600;
  --dark-color: #1a1a2e;
  --light-color: #f5f7fa;
  --text-color: #333;
  --text-light: #666;
  --white: #ffffff;
  --success-color: #00C853;
  --warning-color: #FFB300;
  --error-color: #FF3D00;
  --border-color: #e0e0e0;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-xxl: 64px;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--white);
  box-shadow: var(--shadow);
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 24px;
  font-weight: 700;
  color: var(--dark-color);
  text-decoration: none;
}

.logo-icon {
  font-size: 32px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-text {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stock-code {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-light);
  padding: 4px 8px;
  background: var(--light-color);
  border-radius: 4px;
  margin-left: var(--spacing-xs);
}

.nav {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  padding: 8px 0;
  position: relative;
  transition: var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.mobile-toggle span {
  width: 24px;
  height: 3px;
  background: var(--dark-color);
  border-radius: 2px;
  transition: var(--transition);
}

.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  margin-top: 72px;
  overflow: hidden;
}

.hero-slider {
  height: 100%;
  position: relative;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

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

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.85), rgba(255, 102, 0, 0.75));
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-title {
  font-size: 56px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--spacing-sm);
  animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--white);
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
  animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-cta {
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 1s ease-out 0.3s backwards;
}

.hero-text {
  font-size: 18px;
  color: var(--white);
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-sm);
  animation: fadeInUp 1s ease-out 0.4s backwards;
}

.btn {
  padding: 14px 32px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  display: inline-block;
}

.btn-primary {
  background: var(--white);
  color: var(--primary-color);
}

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

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-secondary:hover {
  background: var(--white);
  color: var(--primary-color);
  transform: translateY(-2px);
}

section {
  padding: var(--spacing-xxl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-size: 42px;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-light);
  margin-top: var(--spacing-md);
}

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

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.about-text h3 {
  font-size: 28px;
  color: var(--dark-color);
  margin-bottom: var(--spacing-md);
}

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

.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.stat-item h4 {
  font-size: 32px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.stat-item p {
  font-size: 14px;
  color: var(--text-light);
}

.keyword-highlight {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.05), rgba(255, 102, 0, 0.05));
  border-left: 4px solid var(--primary-color);
  border-radius: 8px;
}

.keyword-highlight p {
  font-size: 15px;
  color: var(--text-color);
  margin: 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.service-card {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.service-image {
  height: 200px;
  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-content {
  padding: var(--spacing-md);
}

.service-icon {
  font-size: 40px;
  margin-bottom: var(--spacing-sm);
}

.service-content h3 {
  font-size: 22px;
  color: var(--dark-color);
  margin-bottom: var(--spacing-sm);
}

.service-content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.6;
}

.technology {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
}

.technology .section-title,
.technology .section-subtitle {
  color: var(--white);
}

.technology .section-title::after {
  background: var(--white);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.tech-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition);
}

.tech-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-8px);
}

.tech-image {
  height: 180px;
  overflow: hidden;
}

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

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

.tech-content {
  padding: var(--spacing-md);
}

.tech-content h3 {
  font-size: 20px;
  margin-bottom: var(--spacing-sm);
  color: var(--white);
}

.tech-content p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
}

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

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.news-card {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

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

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

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

.news-content {
  padding: var(--spacing-md);
}

.news-meta {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.news-date,
.news-category {
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 500;
}

.news-date {
  background: var(--light-color);
  color: var(--text-light);
}

.news-category {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
}

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

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

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--light-color);
  border-radius: 12px;
  transition: var(--transition);
}

.contact-item:hover {
  background: var(--white);
  box-shadow: var(--shadow);
  transform: translateX(8px);
}

.contact-icon {
  font-size: 32px;
  flex-shrink: 0;
}

.contact-text h4 {
  font-size: 18px;
  color: var(--dark-color);
  margin-bottom: 4px;
}

.contact-text p {
  font-size: 15px;
  color: var(--text-light);
}

.contact-text small {
  font-size: 13px;
  color: var(--text-light);
  opacity: 0.8;
  display: block;
  margin-top: 4px;
}

.contact-form {
  background: var(--light-color);
  padding: var(--spacing-xl);
  border-radius: 16px;
}

.contact-form h3 {
  font-size: 24px;
  color: var(--dark-color);
  margin-bottom: var(--spacing-xs);
}

.form-desc {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.contact-form .btn-primary {
  width: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  border: none;
}

.contact-form .btn-primary:hover {
  opacity: 0.9;
}

.footer {
  background: var(--dark-color);
  color: var(--white);
  padding: var(--spacing-xxl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  font-size: 18px;
  margin-bottom: var(--spacing-md);
  color: var(--white);
}

.footer-section p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
}

.stock-info {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  text-align: center;
}

.keyword-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-md);
}

.keyword-tags span {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.footer-section ul li {
  margin-bottom: var(--spacing-xs);
}

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

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

.social-links {
  display: flex;
  gap: var(--spacing-sm);
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
}

.social-link:hover {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  transform: translateY(-4px);
}

.footer-note {
  margin-top: var(--spacing-md);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

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

.footer-bottom p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-keywords {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: var(--spacing-xs);
}

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

@media (max-width: 992px) {
  .nav {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 42px;
  }

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

  .section-title {
    font-size: 36px;
  }

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

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

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

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

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

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

@media (max-width: 576px) {
  .hero-title {
    font-size: 32px;
  }

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

  .hero-buttons {
    flex-direction: column;
  }

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

  .services-grid,
  .tech-grid {
    grid-template-columns: 1fr;
  }

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

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