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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: #333;
  background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf4 100%);
}

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

/* 头部样式 */
.header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 50px;
  width: auto;
}

.nav {
  display: flex;
  gap: 30px;
}

.nav-link {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  transition: all 0.3s ease;
  padding: 8px 16px;
  border-radius: 20px;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

/* 主内容区 */
.main {
  padding: 40px 0;
}

/* Hero区域 */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 80px 20px;
  text-align: center;
  margin-bottom: 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: 4px;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 20px;
  opacity: 0.95;
}

.hero-desc {
  font-size: 18px;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
  opacity: 0.9;
}

/* 区域样式 */
.section {
  margin-bottom: 80px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  color: #333;
  margin-bottom: 40px;
  text-align: center;
  position: relative;
  padding-bottom: 20px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
  border-radius: 2px;
}

/* 卡片样式 */
.card {
  background: white;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  margin-bottom: 30px;
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.card-title {
  font-size: 24px;
  font-weight: 700;
  color: #667eea;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 2px solid #f0f0f0;
}

.card p {
  font-size: 16px;
  line-height: 1.8;
  color: #666;
  margin-bottom: 15px;
}

.card p strong {
  color: #333;
  font-weight: 600;
}

/* 特性列表 */
.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  padding: 12px 0;
  padding-left: 30px;
  margin-bottom: 12px;
  position: relative;
  font-size: 16px;
  line-height: 1.8;
  color: #666;
}

.feature-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: #667eea;
  font-weight: bold;
  font-size: 20px;
}

/* 文化卡片 */
.culture-card {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
}

.culture-highlight {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 30px;
  border-radius: 12px;
  margin-bottom: 20px;
}

.culture-title {
  color: white;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 15px;
  text-align: center;
}

.culture-desc {
  color: white;
  font-size: 18px;
  line-height: 1.8;
  text-align: center;
  opacity: 0.95;
}

/* 联系方式 */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.contact-card {
  background: white;
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.contact-icon {
  font-size: 48px;
  margin-bottom: 15px;
}

.contact-title {
  font-size: 18px;
  font-weight: 600;
  color: #333;
  margin-bottom: 10px;
}

.contact-info {
  font-size: 20px;
  color: #667eea;
  font-weight: 600;
}

/* 页脚 */
.footer {
  background: #333;
  color: white;
  padding: 40px 20px;
  text-align: center;
  margin-top: 80px;
}

.footer p {
  margin: 10px 0;
  font-size: 14px;
  opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    gap: 20px;
  }
  
  .nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
  }
  
  .hero-title {
    font-size: 40px;
  }
  
  .hero-subtitle {
    font-size: 24px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .card {
    padding: 30px 20px;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 32px;
  }
  
  .hero-subtitle {
    font-size: 20px;
  }
  
  .section-title {
    font-size: 24px;
  }
}