.top {
     background: #fff;
     position: relative;
     z-index: 1000;
    }
 .top_1 {
     display: flex;
     justify-content: space-between;
     align-items: center;  /*垂直居中*/
	 width: 1200px;
     margin: 0 auto;       /* 居中容器 */
	 font-size: 1.2rem;
	 font-weight: bold;
    } 
 .top1 {
     background: #fff;
     position: relative;
     z-index: 999;
	 background: #efefef;
    }
 .top1_1 {
	 width: 1200px;
     margin: 0 auto;       /* 居中容器 */
    }
	.logo-container {
	  display: flex;
	  align-items: center; /* 垂直居中 */
	  gap: 10px; /* 图片和文字之间的间距 */
	}
	
	.logo {
	  height: 80px; /* 根据需要调整 */
	}
	
	.logotxt {
	  font-size: 18px;
	  font-weight: bold;
	}
    /* 桌面端导航 */
    .nav-links {
      list-style: none;
      display: flex;
      padding: 0;
      background: #efefef;
	  justify-content: space-between;
    }
    .nav-links li {
      position: relative;
	  width:240px;
    }
    .nav-links li a {
      display: block;
      padding: 0.5rem 1rem;
      color: #2c2d30;
      text-decoration: none;
	  line-height: 30px;
	  color: #000;
	  font-size: 18px;
	  font-weight: 800;
	  
    }
    .nav-links li a:hover {
      background: #fc7519;
    }
	.nav-links li.current > a{
		background:#fc7519;
		color: #fff;
		}
    /* 二级菜单 (PC端 hover) */
    .nav-links li ul {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      background: #eca472;
      list-style: none;
      min-width: 114px;
      margin: 0;
      padding: 0;
      z-index: 1000;
    }
    .nav-links li:hover > ul {
      display: block;
    }
    .nav-links li ul li a {
      padding: 0.5rem 1rem;
      white-space: nowrap;
	  color: #fff;
    }

    /* 小三角图标 */
    .arrow {
      display: inline-block;
      margin-left: 5px;
	   margin-bottom: 4px;
      border: solid #f1f1f1;
      border-width: 0 2px 2px 0;
      padding: 3px;
      transform: rotate(45deg);
      transition: transform 0.3s ease;
	  
    }
    /* PC端 hover 时箭头翻转 */
    .nav-links li:hover > a .arrow {
      transform: rotate(-135deg);
    }

    /* 汉堡按钮 + 抽屉菜单 默认隐藏 */
    .menu-toggle,
    .drawer,
    .overlay {
      display: none;
    }

    /* 移动端适配 */
    @media (max-width: 1024px) {
      /* 隐藏 PC 导航 */
	  .top{padding-right: 5px;padding-left: 5px;}
      .top1 {
        display: none;
      }
	  .top_1 {
	   width: 100%;
	  }
	  .logo{
	    height: 50px;
	  }
	  .logotxt{
		  
	  }
	  .nav-links{
		 display: none;  
	  }
	  

    /* 1. 按钮区域：圆形渐变背景 */
    .menu-toggle{
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      cursor: pointer;
      box-shadow: 0 2px 8px rgba(0,0,0,.2);
      transition: .3s;
    }
    .menu-toggle:active{ transform: scale(.95); }
    
    /* 2. 三条线：圆角 + 淡入动画 */
    .menu-toggle span{
      width: 24px;
      height: 2px;
      background: #fff;
      border-radius: 2px;
      margin: 3px 0;
      transition: .3s;
    }
    
    /* 3. 打开时变成 × */
    .menu-toggle.open span:nth-child(1){
      transform: rotate(45deg) translate(5px, 5px);
    }
    .menu-toggle.open span:nth-child(2){
      opacity: 0;
    }
    .menu-toggle.open span:nth-child(3){
      transform: rotate(-45deg) translate(5px, -5px);
    }

      /* 抽屉菜单 */
      .drawer {
        display: block;
        position: fixed;
        top: 20;
        left: -150px;
        width: 150px;
        height: 100%;
         background: rgba(24, 32, 64, 0.85);
          backdrop-filter: blur(10px);
          -webkit-backdrop-filter: blur(10px);
          border-right: 1px solid rgba(255, 255, 255, 0.08);
        overflow-y: auto;
        transition: left 0.3s ease;
        z-index: 1100;
        padding-top: 60px;
      }
      .drawer.active {
        left: 0;
      }
      .drawer ul {
        list-style: none;
        margin: 0;
        padding: 0;
      }
      .drawer li a {
        display: block;
        padding: 0.8rem 1rem;
        color: #f1f1f1;
        text-decoration: none;
        border-bottom: 1px solid #444;
      }
      .drawer li a:hover {
        background: #444;
      }

      /* 抽屉里的子菜单 (折叠式) */
      .drawer li ul {
        display: none;
       background: rgba(34, 38, 46, 0.9);
       backdrop-filter: blur(8px);
       -webkit-backdrop-filter: blur(8px);
      }
      .drawer li.open > ul {
        display: block;
      }
      .drawer li ul li a {
        padding-left: 2rem;
      }

      /* 移动端箭头旋转效果 */
      .drawer li.open > a .arrow {
        transform: rotate(-135deg);
      }

      /* 遮罩层 */
      .overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
        z-index: 1000;
      }
      .overlay.active {
        display: block;
      }
    }
    
     /* 横幅轮播 */
    .banner { position: relative; overflow: hidden; height: auto; max-width:1200px;padding-top:5px;border-radius:10px; justify-content: space-between;}
    .slides { display: flex; transition: transform 0.5s ease; }
    .slide { min-width: 100%; height: auto; }
    .slide img { width: 100%; height: 100%; object-fit: cover; }
    .banner-buttons {
      position: absolute; bottom: 15px; left: 50%; transform: translateX(-50%);
      display: flex; gap: 8px;
    }
    .banner-buttons span {
      width: 12px; height: 12px; border-radius: 50%;
      background: rgba(255,255,255,0.7); cursor: pointer;
    }
    .banner-buttons .active { background: #fff; }
    /* 响应式 */
    @media (max-width: 768px) {
      header nav { flex-direction: column; }
      .services-list { flex-direction: column; }
      .banner { height: 250px; }
      .slide { height: 250px; }
    }
   
   /* 页脚 */
    .footer {
      background: #333;
      color: #fff;
      display: flex;
      justify-content: center;
      align-items: center;
      width: 100%;
      text-align: center;
	  padding-top: 10px;
	  padding-bottom: 10px;
    }
    
    .footer-copyright {
      margin-right: 15px;
    }
    
    .footer-terms {
      margin: 0 15px;
    }
    
    .footer-social {
      margin-left: 15px;
      justify-content: left;
    }
    
    .footer-social img {
      width: 120px;
      height: auto;
      filter: invert(1); /* 翻转颜色，使其在深色背景上更清晰 */
    }
     @media (max-width: 768px) 
     {
         .footer {
    		flex-direction: column; 
    		line-height: 30px;
            }
         .footer-social img {
             padding-right:85px;
            }
     }
    /* 返回顶部按钮 */
    .back-to-top {
      position: fixed;
      bottom: 30px;
      right: 30px;
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background-color: #333;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
      z-index: 999;
    }
    
    .back-to-top:hover {
      background-color: #444;
    }
    
    
    .products-container {
      max-width: 1200px;
      margin: 0 auto;
    }

    .products {
      display: grid;
      gap: 20px;
      grid-template-columns: repeat(1, 1fr); /* 默认手机一列 */
    }

    .product-card {
      background: #fff;
      border-radius: 10px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
      overflow: hidden;
      transition: transform 0.3s ease;
    }

    .product-card:hover {
      transform: translateY(-5px);
    }

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

    .product-info {
      padding: 15px;
      text-align: center;
    }

    .product-info h3 {
      font-size: 18px;
      margin: 10px 0;
      color: #333;
    }

    .product-info p {
      font-size: 14px;
      color: #666;
      margin-bottom: 15px;
    }

    .btn {
      display: inline-block;
      padding: 8px 15px;
      background: #007BFF;
      color: #fff;
      border-radius: 5px;
      text-decoration: none;
      transition: background 0.3s;
    }

    .btn:hover {
      background: #0056b3;
    }

    /* 手机大一些，2列 */
    @media (min-width: 481px) {
      .products {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    /* 平板，3列 */
    @media (min-width: 769px) {
      .products {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    /* 普通PC，4列 */
    @media (min-width: 1025px) {
      .products {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    /* 大屏，5列 */
    @media (min-width: 1601px) {
      .products {
        grid-template-columns: repeat(3, 1fr);
       
      }
    }