* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Arial, sans-serif;
        }
        
        /* 顶部横幅区域 */
        .header-banner {
            position: relative;
            height: 400px;
            background: url('https://picsum.photos/1920/400?forest') no-repeat center center;
            background-size: cover;
        }
        .header-banner-box{
            width: 1200px;
            margin: 0 auto;
            height: 400px;
        }
        .banner-side {
            height: 100%;
            width: 250px;
            background-color: #003366;
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        .banner-side h1 {
            font-size: 28px;
            margin-bottom: 10px;
        }
        .banner-side p {
            font-size: 24px;
        }

        /* 主体布局 */
        .main-container {
            display: flex;
            min-height: calc(100vh - 400px);
            width: 1200px;
            margin: 0 auto;
        }

        /* 左侧导航栏 */
        .sidebar {
            width: 250px;
            background-color: #f5f5f5;
           height: 500px;
        }
        .sidebar ul {
            list-style: disc;
            list-style-type: none;
            text-align: center;
            padding-top: 20px;
        }
        .sidebar li {
            
            font-size: 18px;
            color: #333;
            padding: 10px 10px;
            border-bottom: 1px solid #eeeeee;
        }
        .sidebar li:first-child {
            font-weight: bold;
        }
        .content-box{
            flex: 1;
            padding: 40px;
            color: #333;
        }
        /* 右侧内容区域 */
        .content {
            padding: 30px 0;
            color: #333;
        }
        .content h2 {
            font-size: 24px;
            margin-bottom: 20px;
            border-bottom: 2px solid #0c3778;
            padding-bottom: 10px;
        }
        .content p {
            line-height: 1.6;
            margin-bottom: 15px;
            font-size: 16px;
        }

        /* 在线客服 */
        .online-service {
            position: fixed;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            background-color: #0066cc;
            color: #fff;
            writing-mode: vertical-rl;
            padding: 10px;
            font-size: 16px;
            cursor: pointer;
        }
        .service-avatar {
            position: fixed;
            right: 10px;
            top: calc(50% + 60px);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: url('https://picsum.photos/40/40') no-repeat center center;
            background-size: cover;
        }
        .active{
            color: #0c3778 !important;
            background: #fff;
        }
        header {
            width: 100%;
            background-color: #fff;
            padding: 10px 0;
            z-index: auto;
            margin: auto;
            
        }
        .header{
            background-color: #fff;
            padding: 10px 0;
            position: fixed;
            top: 0;
            left: 0;   /* 关键：左右偏移设为0 */
            width: 100%;
            background-color: #fff;
            padding: 10px 0;
            z-index: 999; /* 建议设为较高值，避免被遮挡 */
            margin: 0 auto; /* 结合left/right:0实现居中 */
            height: 72px;
            box-shadow: 0 4px 4px rgba(0, 0, 0, .1);
        }
        .nav-container {
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 50px;
        }
        .logo img {
            width: 140px;
            height: 30px;
        }
        .logo-text {
            font-weight: bold;
            color: #333;
        }
        .nav-links {
            display: flex;
            gap: 25px;
        }
        .nav-links a {
            text-decoration: none;
            color: #333;
            font-family: 'Noto Sans CJK';
            font-size: 18px;
            transition: color 0.3s;
        }
        .nav-links a:hover {
            color: #0c3778;
        }
        .nav-links .active{
            color: #0c3778;
            font-weight: bold;
        } 
        .business-contact {
            font-size: 16px;
            color: #0c3778;
        }
        .logo-img{
           display: none; 
        }
        /* 容器：2行3列网格布局 */
        .img-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr); /* 3列等分 */
            gap: 20px; /* 图片间距 */
            padding: 20px;
            max-width: 900px; /* 限制容器宽度，适配展示 */
            margin: 0 auto;
        }

        /* 单个图片项 */
        .img-item {
            position: relative;
            overflow: hidden; /* 隐藏放大后溢出的部分 */
            border-radius: 4px; /* 轻微圆角，贴近原图质感 */
            height: 300px; /* 固定图片高度，统一布局 */
        }

        /* 图片样式 */
        .img-item img {
            width: 100%;
            height: 100%;
            object-fit: cover; /* 保持图片比例，避免拉伸 */
            transition: transform 0.4s ease; /* 放大过渡动画 */
        }
        .hover-text span{
            width: 80%;
            text-align: center;
        }
        .hover-text .span1{
            font-weight: bold;
        }
        .hover-text .span2{
            font-size: 12px;
        }
        /* 悬停时的文字层 */
        .img-item .hover-text {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.65); /* 半透明遮罩 */
            color: #fff;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 16px;
            opacity: 0; /* 默认隐藏 */
            transition: opacity 0.4s ease;
            flex-wrap: wrap
        }
        .img-item .hover-text p{
            
        }
        /* 鼠标悬停效果 */
        .img-item:hover img {
            transform: scale(1.12); /* 图片放大 */
        }
        .img-item:hover .hover-text {
            opacity: 1; /* 显示文字 */
        }
        .container {
            max-width: 1200px;
            margin: 20px auto;
            padding: 0 20px;
        }
        /* 图片画廊样式 */
        .gallery {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            grid-gap: 15px;
            margin-bottom: 20px;
        }
        .gallery img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 4px;
        }
        /* 分页样式 */
        .pagination {
            text-align: center;
        }
        .pagination button {
            padding: 8px 12px;
            margin: 0 5px;
            border: 1px solid #ddd;
            border-radius: 4px;
            background: #fff;
            cursor: pointer;
            transition: background 0.2s;
        }
        .pagination button:hover {
            background: #f5f5f5;
        }
        .pagination button.active {
            background: #ccc;
            font-weight: bold;
            border-color: #999;
        }
        /* 在线客服样式 */
        .support {
            position: fixed;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .support-box {
            background: #4285f4;
            color: #fff;
            padding: 10px 5px;
            border-radius: 8px 0 0 8px;
            writing-mode: vertical-rl;
            font-size: 14px;
        }
        .support-box span {
            margin-bottom: 5px;
        }
        .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: url('https://via.placeholder.com/40x40?text=头像') center/contain no-repeat;
            margin-top: 10px;
        }
        footer {
      width: 100%;
      padding: 20px 0;
    }
    /* 友情链接区域 */
    .friend-link {
      margin-bottom: 50px;
      font-size: 14px;
    }
    .friend-link span {
        font-size: 18px;
      margin-right: 10px;
    }
    .friend-link a {
      color: #0066cc;
      text-decoration: none;
      margin-right: 15px;
    }
    .friend-link a:hover {
      text-decoration: underline;
    }
    /* 中间内容区域（二维码+新闻+Logo） */
    .footer-middle {
      display: flex;
      align-items: flex-start;
      margin-bottom: 20px;
      padding-bottom: 20px;
      border-bottom: 1px solid #e5e5e5;
    }
    /* 二维码区域 */
    .qrcode-section {
      display: flex;
      align-items: center;
      margin-right: 40px;
      border-right: 1px solid #999;
      padding-right: 50px;
    }
    .qrcode-section img {
      width: 80px;
      height: 80px;
      margin-right: 10px;
    }
    .qrcode-section p {
      font-size: 12px;
      line-height: 1.6;
    }
    /* 新闻列表区域 */
    
    .news-list ul {
      list-style: disc;
      padding-left: 20px;
      font-size: 14px;
    }
    .news-list li {
      margin-bottom: 8px;
    }
    .news-list a {
      color: #999999;
        font-size: 14px;
      text-decoration: none;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 400px;
      display: inline-block;
    }
    .news-list a:hover {
      text-decoration: underline;
    }
    /* Logo区域 */
    .logo-section {
      display: flex;
      align-items: center;
    }
    .logo-section img {
      width: 100px;
      height: auto;
    }
    /* 版权信息区域 */
    .copyright {
      font-size: 14px;
      color: #999;
    }
    .copyright a {
      color: #666;
      text-decoration: none;
    }
    .copyright a:hover {
      text-decoration: underline;
    }
    .copyright img {
      width: 16px;
      height: 16px;
      vertical-align: middle;
      margin: 0 2px;
    }
    .w1200{
        width: 1200px;
        margin: 0 auto;
    }
    .news-list {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex: 1;
    margin-right: 40px;
}
.img-item-text{
    display: none;
}
@media (max-width: 768px) {
    .img-item {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    height: 100%;
    box-shadow: 0 0 6px 1px rgba(96, 158, 233, 0.3); 
}
.img-item-text{
    display: block;
    background:  rgb(12, 55, 120);
    color:#fff;
    
}
.img-item-text p{
    padding: 5px 10px;
    margin-bottom: 0;
    
}
.img-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    transition: transform 0.4s 
ease;
}
    .banner-side {
    height: 100%;
    width: 200px;
    background-color: #003366;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
}
    .header-banner {
        margin-top: 75px;
    position: relative;
    height: 176px;
    background: url(https://picsum.photos/1920/400?forest) no-repeat center center;
    background-size: cover;
}
            
.header-banner-box {
    width: 100%;
    margin: 0 auto;
    height: 176px;
}
        /* 主体布局 */
        .main-container {
            display: flex;
            min-height: calc(100vh - 400px);
            width: 100%;
            margin: 0 auto;
        }
.w1200{
            width: 100%;
        }
        /* 左侧导航栏 */
        .sidebar {
            display: none;
            width: 250px;
            background-color: #f5f5f5;
           height: 500px;
        }
        .sidebar ul {
            list-style: disc;
            list-style-type: none;
            text-align: center;
            padding-top: 20px;
        }
        .sidebar li {
            
            font-size: 18px;
            color: #333;
            padding: 10px 10px;
            border-bottom: 1px solid #eeeeee;
        }
        .sidebar li:first-child {
            font-weight: bold;
        }
        .content-box{
            flex: 1;
            padding: 20px;
            color: #333;
        }
        .img-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 20px;
    padding: 20px 0;
    max-width: 900px;
    margin: 0 auto;
}
        .container {
    max-width: 100%;
    margin: 20px auto;
    padding: 0;
}
        .gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-gap: 10px;
    margin-bottom: 20px;
}
        /* 右侧内容区域 */
        .content {
            padding: 30px 0;
            color: #333;
        }
        .content h2 {
            font-size: 24px;
            margin-bottom: 20px;
            border-bottom: 2px solid #0c3778;
            padding-bottom: 10px;
        }
        .content p {
            line-height: 1.6;
            margin-bottom: 15px;
            font-size: 16px;
            text-indent: 2rem;
        }
            /* 系统卡片 */
        .system-card {
            text-align: center;
            width: 23%;
            transition: transform 0.3s ease;
        }
        .system-card-img{
            height: 100%;
            width: 100%;
            border: none;
            display: flex;
            justify-content: center; /* 水平居中 */
            align-items: center;  
            border-radius: 20px;
        }
        .system-card img {
            width: 100%;
            height: 100%;
            margin-bottom: 1rem;
            object-fit: contain;
            color: #000080;
        }
        .system-card p {
            font-size: 14px;
            color: #000000;
            line-height: 40px;
        }
        /*  hover交互 */
        .system-card:hover {
            transform: scale(1.08);
        }
            .nav-links{
                display: none;
            }
            .system-container {
            display: flex;
            flex-wrap: nowrap;
            justify-content: center;
            gap: 1rem;
            max-width: 100%;
            margin: 0 auto;
            padding: 0 20px;
        }
            .header{
            width: 100%;
            background-color: #fff;
            padding: 10px 0;
            position: fixed;
            top: 0;
            left: 0;
            background-color: #fff;
            padding: 10px 0;
            z-index: 999; /* 建议设为较高值，避免被遮挡 */
            margin: 0 auto; /* 结合left/right:0实现居中 */
            height: 72px;
            box-shadow: 0 4px 4px rgba(0, 0, 0, .1);
        }
        .nav-container {
            
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
            .logo{
                height: 50px;
                  padding-left: 10px;
                  width: 100%; /* 关键：设置容器宽度，让space-between有空间生效 */
                  display: flex;
                  justify-content: space-between;
                  align-items: center;
                  gap: 8px;
            }
            .logo-img{
                display: block;
                width:24px !important;
                height:24px !important;
                margin-right: 20px;
            }
            
            .logo-text{
            }
            .business-contact{
                display: none;
            }
            
        }
        .data-list {
            margin-bottom: 20px;
        }
        
        .data-item {
            padding: 15px;
            border-bottom: 1px solid #eee;
        }
        
        .data-item:last-child {
            border-bottom: none;
        }
        
        .data-item h3 {
            margin-bottom: 5px;
            color: #2c3e50;
        }
        
        .data-item p {
            color: #666;
            font-size: 14px;
        }
        
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 20px;
        }
        
        .pagination button {
            margin: 0 5px;
            padding: 8px 12px;
            border: 1px solid #ddd;
            background-color: white;
            color: #333;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .pagination button:hover:not(:disabled) {
            background-color: #f0f0f0;
        }
        
        .pagination button.active {
            background-color: #3498db;
            color: white;
            border-color: #3498db;
        }
        
        .pagination button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }
        
        .page-info {
            margin: 0 10px;
            color: #666;
        }