/* 导航栏样式 */
    .header {
      position: relative;
      z-index: 100;
      height: 120px;
    }
    
    .main-nav {
      padding: 20px 0;
      transition: all 0.3s ease;
      background-color: white;
    border-bottom: 18px solid #60895A;
    }
    
    .main-nav.scrolled {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      box-shadow: 0 2px 10px rgba(0,0,0,0.1);
      padding: 15px 0;
    }
    
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .logo {
         max-width: 100px;
    }
    
    .nav-links {
      display: flex;
      gap: 30px;
    font-size: 20px;
    text-transform: uppercase;
    }
    
    .nav-link {
      font-weight: 500;
      transition: color 0.3s;
      position: relative;
    }
    
    .nav-link:hover {
      color: #60895A;
    }
    
    /* 产品下拉菜单 */
    .products-dropdown {
        margin-top: 30px;
      position: absolute;
      top: 100%;
      left: -150px;
      background: white;
      box-shadow: 0 2px 10px rgba(0,0,0,0.1);
      width: 400px;
      padding: 20px;
      display: flex;
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: all 0.3s ease;
      z-index: 999;
    }
    
    .products-wrapper {
      position: relative;
    }
    
    .products-wrapper:hover .products-dropdown {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    
    .dropdown-menu {
      flex: 1;
    }
    
    .dropdown-menu li {
      margin-bottom: 10px;
    }
    
    .dropdown-menu a {
      display: block;
      padding: 5px 0;
    }
    
    .dropdown-image {
      flex: 0 0 180px;
    }
    
    /* 移动端菜单按钮 */
    .menu-toggle {
      display: none;
      font-size: 24px;
      cursor: pointer;
    }
    
@media (max-width: 576px) {
  .header {
      height: 96px;
    }
     .logo {
         max-width: 60px;
    }
}