/* 全局样式 */
      :root {
          --primary-dark: #2C3E50;
          --primary-blue: #3498DB;
          --accent-orange: #E67E22;
          --accent-green: #2ECC71;
          --light-gray: #ECF0F1;
          --dark-gray: #333333;
      }

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

      body {
          font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
          line-height: 1.6;
          color: var(--dark-gray);
          background-color: #f9f9f9;
      }

      a {
          text-decoration: none;
          color: inherit;
      }

      /* 导航栏 */
      .sticky-header {
          position: sticky;
          top: 0;
          background: rgba(44, 62, 80, 0.9);
          backdrop-filter: blur(10px);
          box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
          transition: all 0.3s ease;
          z-index: 1000;
          padding: 15px 5%;
          display: flex;
          justify-content: space-between;
          align-items: center;
      }

      .logo {
          font-size: 17px;
          font-weight: bold;
          color: white;
      }

      .nav-links {
          display: flex;
          list-style: none;
      }

      .nav-links li {
          margin-left: 30px;
      }

      .nav-links a {
          color: white;
          font-weight: 500;
          transition: color 0.3s;
      }

      .nav-links a:hover {
          color: var(--accent-orange);
      }

      /* 英雄区域 */
      .hero {
          height: 400px;
          background: linear-gradient(rgba(12 166 243 / 50%), rgba(0, 0, 0, 0.5)),
              url('https://jinshi-shangpin-hunningtu.oss-cn-beijing.aliyuncs.com/hunnitu.jpg') center/cover no-repeat;
          display: flex;
          align-items: center;
          justify-content: center;
          text-align: center;
          color: white;
          padding: 0 20px;
      }

      .hero-content h1 {
          font-size: 1.8rem;
          margin-bottom: 20px;
      }

      .hero-content p {
          font-size: 1.2rem;
          margin-bottom: 30px;
          max-width: 700px;
          text-align: center;
          font-weight: 700;
      }

      /* 视频专区 */
      .video-section {
          /* padding: 10px 5%; */
       
      }

      .section-title {
          text-align: center;
          margin-bottom: 50px;
      }

      .section-title h2 {
          font-size: 2.5rem;
          color: var(--primary-dark);
          margin-bottom: 15px;
      }

      .section-title p {
          color: #666;
          font-size: 1.1rem;
          max-width: 700px;
          margin: 0 auto;
      }

      .video-container {
          max-width: 1800px;
          margin: 0 auto;
          display: flex;
          flex-wrap: wrap;
          align-items: center;
          gap: 40px;
          background-color: #fff;
      }

      .video-wrapper {
          flex: 1;
          min-width: 300px;
          position: relative;
          border-radius: 8px;
          overflow: hidden;
          box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
      }

      .video-poster {
          position: relative;
          cursor: pointer;
          transition: all 0.3s ease;
      }

      .video-poster img {
          width: 100%;
          display: block;
      }

      .video-poster:hover {
          transform: scale(1.02);
      }

      .play-button {
          position: absolute;
          top: 50%;
          left: 50%;
          transform: translate(-50%, -50%);
          width: 80px;
          height: 80px;
          background: rgba(52, 152, 219, 0.8);
          border-radius: 50%;
          border: none;
          transition: all 0.3s ease;
      }

      .play-button:hover {
          background: rgba(41, 128, 185, 0.9);
          transform: translate(-50%, -50%) scale(1.1);
      }

      .play-button svg {
          width: 30px;
          height: 30px;
          fill: white;
      }

      .content-video {
          width: 100%;
          display: none;
      }

      .video-caption {
          flex: 1;
          min-width: 300px;
          padding: 40px;
      }

      .video-caption h3 {
          font-size: 2rem;
          color: var(--primary-dark);
          margin-bottom: 20px;
      }

      .video-caption p {
          color: #666;
          line-height: 1.8;
          margin-bottom: 30px;
      }

      /* 服务卡片 */
      .services {
          padding: 0px;
          
      }

      .services-grid {
          display: grid;
          grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
          gap: 30px;
          max-width: 1800px;
          margin: 0 auto;
      }

      .service-card {
          background: white;
          border-radius: 8px;
          box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
          transition: transform 0.3s, box-shadow 0.3s;
          overflow: hidden;
      }

      .service-card:hover {
          transform: translateY(-5px);
          box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
      }

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

      .service-content {
          padding: 25px;
      }

      .service-content h3 {
          font-size: 1.5rem;
          margin-bottom: 15px;
          color: var(--primary-dark);
      }

      /* 按钮样式 */
      .btn {
          display: inline-block;
      
          border-radius: 10px;
          font-weight: bold;
          text-transform: uppercase;
          letter-spacing: 1px;
          
          border: none;
          cursor: pointer;
          padding: 1rem 2rem;
          font-size: clamp(1rem, 2vw, 1.5rem); /* 响应式字体大小 */
          min-width: 180px;
          max-width: 300px;
          width: 50%; /* 相对于父元素的百分比宽度 */
          margin: 0 auto;
      }

      .btn-primary {
          background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
          color: white;
      }

     .box {
        font-family: Arial, sans-serif;
        display: flex;
        justify-content: center;
        align-items: center;
        padding: 20px; /* 在小屏幕上添加一些内边距 */
        background-color: #f5f5f5;
    }

      .btn-primary:hover {
          transform: translateY(-2px);
          box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
      }

      
      
      @media (min-width: 768px) {
        .btn-primary{
          padding: 12px 24px;
          font-size: 1.2rem;
        }
      }

      /* 页脚 */
      footer {
          background:#3f4f5f;
          color: white;
          padding: 60px 5% 30px;
      }

      .footer-content {
          max-width: 1800px;
          margin: 0 auto;
          display: grid;
          grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
          gap: 40px;
      }

      .footer-column h3 {
          font-size: 1.3rem;
          margin-bottom: 20px;
          color: var(--accent-orange);
      }

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

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

      .footer-column a:hover {
          color: var(--accent-orange);
      }

      .copyright {
          text-align: center;
          margin-top: 50px;
          padding-top: 20px;
          border-top: 1px solid rgba(255, 255, 255, 0.1);
      }

      /* 响应式设计 */
      @media (max-width: 768px) {
          .nav-links {
              display: none;
          }

          .hero-content h1 {
              font-size: 2rem;
          }

          .video-container {
              flex-direction: column;
          }

          .section-title h2 {
              font-size: 2rem;
          }
      }

      /* 汉堡菜单按钮基础样式 */
      .hamburger {
          display: none;
          /* 默认在PC端隐藏 */
          cursor: pointer;
          width: 30px;
          height: 20px;
          flex-direction: column;
          margin-left: 192px;
          justify-content: space-between;
      }

      .hamburger span {
          display: block;
          width: 100%;
          height: 3px;
          background-color: #fff;
          
          /* 添加过渡效果 */
      }

      /* 移动端导航菜单样式 */
      .nav-mobile {
          display: none;
          position: fixed;
          top: 80px;
          /* 根据header高度调整 */
          left: 0;
          width: 100%;
          background-color: #fff;
          box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
          z-index: 999;
          max-height: 0;
          /* 初始高度为0 */
          overflow: hidden;
          /* 隐藏溢出内容 */
          transition: max-height 0.3s ease-out;
          /* 高度变化动画 */
      }

      .nav-mobile.active {
          display: block;
          max-height: 500px;
          /* 展开时的高度 */
      }

      /* 媒体查询 - 在移动端显示汉堡菜单 */
      @media (max-width: 768px) {
          .nav-desktop {
              display: none;
              /* 隐藏PC导航 */
          }

          .hamburger {
              display: flex;
              /* 显示汉堡菜单 */
          }
      }

       /* 导航样式 - 移动端 */
       .nav-mobile {
        display: none;
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        z-index: 999;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
    }
    
    .nav-mobile.active {
        display: block;
        max-height: 500px;
    }
    
    .nav-mobile ul {
        padding: 20px;
    }
    
    .nav-mobile li {
        margin-bottom: 15px;
        list-style-type: none;
        
        
    }
    
    .nav-mobile a {
        display: block;
        padding: 10px;
        font-size: 16px;
        color: #444;
        border-bottom: 1px solid #eee;
    }
    
    .nav-mobile a:hover {
        color: var(--accent-orange);
    }


    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Microsoft YaHei', Arial, sans-serif;
    }
    
    body {
        line-height: 1.6;
        color: #333;
        background-color: #f5f5f5;
    }
    
    a {
        text-decoration: none;
        color: inherit;
    }
    
    ul {
        list-style: none;
    }
    
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    
    .container {
        width: 100%;
        max-width: 1800px;
        margin: 0 auto;
        padding: 0 15px;
    }
    
    /* 头部样式 */
    header {
        background-color: #fff;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        position: sticky;
        top: 0;
        z-index: 1000;
    }
    
    .header-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 0;
    }
    
    .logo {
        display: flex;
        align-items: center;
    }
    
    .logo img {
        height: 40px;
        margin-right: 10px;
    }
    
    .logo-text h1 {
        font-size: 24px;
        color: #d32f2f;
        margin-bottom: 5px;
    }
    
    .logo-text p {
        font-size: 12px;
        color: #666;
    }
    
    /* 导航样式 - PC端 */
    .nav-desktop {
        display: flex;
    }
    
    .nav-desktop ul {
        display: flex;
        align-items: center;
    }
    
    .nav-desktop li {
        margin-left: 25px;
        position: relative;
    }
    
    .nav-desktop a {
        font-size: 16px;
        font-weight: 500;
        color: #444;
        transition: color 0.3s;
        padding: 5px 0;
    }
    
    .nav-desktop a:hover {
        color: #d32f2f;
    }
    
    .nav-desktop .active a {
        color: #d32f2f;
        border-bottom: 2px solid #d32f2f;
    }
    
    /* 搜索框 */
    .search-box {
        display: flex;
        align-items: center;
        margin-left: 30px;
        border: 1px solid #ddd;
        border-radius: 20px;
        padding: 5px 15px;
    }
    
    .search-box input {
        border: none;
        outline: none;
        padding: 5px;
        width: 150px;
    }
    
    .search-box button {
        background: none;
        border: none;
        cursor: pointer;
        color: #666;
    }
    
    /* 汉堡菜单按钮 - 移动端 */
    .hamburger {
        display: none;
        cursor: pointer;
        width: 30px;
        height: 20px;
        flex-direction: column;
        justify-content: space-between;
    }
    
    .hamburger span {
        display: block;
        width: 100%;
        height: 3px;
        background-color: #fff;
        
    }
    
    /* 导航样式 - 移动端 */
    .nav-mobile {
        display: none;
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        z-index: 999;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
    }
    
    .nav-mobile.active {
        display: block;
        max-height: 500px;
    }
    
    .nav-mobile ul {
        padding: 20px;
    }
    
    .nav-mobile li {
        margin-bottom: 15px;
    }
    
    .nav-mobile a {
        display: block;
        padding: 10px;
        font-size: 16px;
        color: #444;
        border-bottom: 1px solid #eee;
    }
    
    /* 轮播图 */
    .slider {
        position: relative;
        margin: 20px 0;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
    
    .slider img {
        width: 100%;
        height: 400px;
        object-fit: cover;
    }
    
    .slider-caption {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
        color: white;
        padding: 20px;
    }
    
    .slider-caption h2 {
        font-size: 24px;
        margin-bottom: 10px;
    }
    
    .slider-caption p {
        font-size: 16px;
        margin-bottom: 10px;
    }
    
    /* 主要内容布局 */
    .main-content {
        display: flex;
        margin: 30px 0;
    }
    
    .news-section {
        flex: 2;
      
    }
    
    .sidebar {
        flex: 1;
    }
    
    /* 新闻卡片 */
    .news-card {
        background-color: #fff;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        margin-bottom: 20px;
        display: flex;
        transition: transform 0.3s;
    }
    
    .news-card:hover {
        transform: translateY(-5px);
    }
    
    .news-image {
        flex: 1;
        min-height: 150px;
    }
    
    .news-image img {
        width: 100%;
        height: 200px;
        object-fit: cover;
    }
    
    .news-content {
        flex: 2;
        padding: 15px;
    }
    
    .news-category {
        display: inline-block;
        background-color: #d32f2f;
        color: white;
        padding: 3px 10px;
        border-radius: 4px;
        font-size: 12px;
        margin-bottom: 10px;
    }
    
    .news-title {
        font-size: 18px;
        margin-bottom: 10px;
        font-weight: bold;
    }
    
    .news-excerpt {
        color: #666;
        margin-bottom: 10px;
        font-size: 14px;
    }
    
    .news-meta {
        display: flex;
        justify-content: space-between;
        color: #999;
        font-size: 12px;
    }
    
    /* 侧边栏 */
    .sidebar-widget {
        background-color: #fff;
        border-radius: 8px;
        padding: 20px;
        margin-bottom: 20px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }
    
    .widget-title {
        font-size: 18px;
        margin-bottom: 15px;
        padding-bottom: 10px;
        border-bottom: 1px solid #eee;
        color: #d32f2f;
    }
    
    .popular-news li {
        padding: 10px 0;
        border-bottom: 1px solid #eee;
    }
    
    .popular-news li:last-child {
        border-bottom: none;
    }
    
    .popular-news a {
        display: flex;
        align-items: center;
    }
    
    .popular-news img {
        width: 60px;
        height: 60px;
        object-fit: cover;
        margin-right: 10px;
        border-radius: 4px;
    }
    
    .popular-news h4 {
        font-size: 14px;
        margin-bottom: 5px;
    }
    
    .popular-news span {
        color: #999;
        font-size: 12px;
    }
    
    .tags a {
        display: inline-block;
        background-color: #f5f5f5;
        color: #666;
        padding: 5px 10px;
        border-radius: 4px;
        margin: 0 5px 5px 0;
        font-size: 12px;
    }
    
    .tags a:hover {
        background-color: #d32f2f;
        color: white;
    }
    
    /* 页脚 */
    footer {
        background-color:#3f4f5f;
        color: #fff;
        padding: 50px 0 20px;
    }
    
    .footer-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
        margin-bottom: 30px;
    }
    
    .footer-column h3 {
        font-size: 18px;
        margin-bottom: 20px;
        color: #fff;
    }
    
    .footer-column ul li {
        margin-bottom: 10px;
    }
    
    .footer-column a {
        color: #bbb;
        transition: color 0.3s;
    }
    
    .footer-column a:hover {
        color: #d32f2f;
    }
    
    .contact-info {
        margin-top: 15px;
    }
    
    .contact-info p {
        margin-bottom: 10px;
        color: #bbb;
        display: flex;
        align-items: center;
    }
    
    .contact-info i {
        margin-right: 10px;
        color: #d32f2f;
    }
    
    .social-links a {
        display: inline-block;
        width: 40px;
        height: 40px;
        background-color: #333;
        color: white;
        border-radius: 50%;
        text-align: center;
        line-height: 40px;
        margin-right: 10px;
        transition: background-color 0.3s;
    }
    
    .social-links a:hover {
        background-color: #d32f2f;
    }
    
    .copyright {
        text-align: center;
        padding-top: 20px;
        border-top: 1px solid #444;
        color: #bbb;
        font-size: 14px;
    }
    
    /* 响应式设计 */
    @media (max-width: 992px) {
        .slider img {
            height: 350px;
        }
        
        .news-card {
            flex-direction: column;
        }
        
        .news-image {
            min-height: 200px;
        }
    }
    
    @media (max-width: 768px) {
        .nav-desktop, .search-box {
            display: none;
        }
        
        .hamburger {
            display: flex;
        }
        
        .main-content {
            flex-direction: column;
        }
        
        .news-section {
            margin-right: 0;
            margin-bottom: 30px;
        }
        
        .slider img {
            height: 300px;
        }
    }
    
    @media (max-width: 576px) {
        .logo-text h1 {
            font-size: 20px;
        }
        
        .slider img {
            height: 250px;
        }
        
        .slider-caption h2 {
            font-size: 20px;
        }
        
        .slider-caption p {
            font-size: 14px;
        }
    }

   
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Microsoft YaHei', Arial, sans-serif;
    }
    
    body {
        background-color: #f5f5f5;
    }
    
    .container {
        max-width: 1800px;
        margin: 0 auto;
        padding: 20px;
    }
     /* 基础样式重置 */
     * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Microsoft YaHei', Arial, sans-serif;
    }
    
    body {
        line-height: 1.6;
        color: #333;
        background-color: #f5f5f5;
        padding: 20px;
        padding-top: 0px;
    }
    
    .container {
        width: 100%;
        max-width: 1800px;
        margin: 0 auto;
    }
    
    /* 内容区块样式 */
    .content-block {
        display: flex;
        background-color: #fff;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        margin-bottom: 30px;
    }
    
    /* 偶数区块 - PC端文字在左图片在右 */
    .content-block.even {
        flex-direction: row-reverse;
    }
    
    .image-section {
        flex: 1;
        min-height: 300px;
        background-size: cover;
        background-position: center;
    }
    
    .text-section {
        flex: 1;
        padding: 40px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    
    .text-section h2 {
        font-size: 28px;
        margin-bottom: 15px;
        color: #222;
    }
    .contact-info {
        margin-top: 15px;
    }
    
    .text-section p {
        font-size: 16px;
        color: #666;
        margin-bottom: 20px;
    }
    
    
   
    
    /* 响应式布局 - 移动端 */
    @media (max-width: 768px) {
        .content-block {
            flex-direction: column;
        }
        
        /* 移动端取消偶数区块的反向排列 */
        .content-block.even {
            flex-direction: column;
        }
        
        .image-section {
            min-height: 250px;
            order: 1; /* 图片在上 */
        }
        
        .text-section {
            order: 2; /* 文字在下 */
            padding: 25px;
        }
        
        .text-section h2 {
            font-size: 24px;
        }
        
      
    }