body {
            font-family: Arial, sans-serif;
            background-color: #f5f5f5;
            display: flex;
            flex-direction: column;
            margin: 0;
        }
        .site-header {
            background: #fff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 15px 20px;
        }
        .branding {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .logo {
            width: 45px;
            height: 45px;
        }
        .company-name {
            font-size: 22px;
            color: #2c3e50;
            margin: 0;
            font-weight: 600;
        }
        .main-nav {
            background: #2c3e50;
        }
        .nav-container {
            max-width: 1240px;
            margin: 0 auto;
        }
        .nav-menu {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
        }
        .nav-menu li {
            position: relative;
        }
        .nav-menu a {
            color: #fff;
            text-decoration: none;
            padding: 15px 20px;
            display: block;
            transition: background 0.3s;
        }
        .nav-menu .active a {
            background: #3498db;
        }
        .nav-menu a:hover {
            background: #34495e;
        }
        .container {
            background-color: #fff;
            padding: 20px;
            border-radius: 4px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            width: 80%;
            max-width: 1200px;
            margin: 0px auto;
        }
        h1 {
            text-align: center;
            margin-bottom: 20px;
        }
        .page-list {
            display: flex;
            justify-content: space-between;
        }
        .page-list ul {
            list-style-type: none;
            padding: 0;
            width: 100%;
        }
        .page-list li {
            margin-bottom: 10px;
        }
        .page-list a {
            color: #2e96dc;
            text-decoration: underline;
        }
        .ul25 {
            margin-top: 25px;
        }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 40px 0;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .footer-info {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            border-bottom: 1px solid #34495e;
        }
        .legal-info {
            text-align: right;
            opacity: 0.8;
        }
        .contact-info p {
            margin: 8px 0;
        }
        @media (max-width: 768px) {
            .nav-menu {
                flex-wrap: wrap;
                justify-content: center;
            }
            .nav-menu li {
                flex: 1 0 50%;
                text-align: center;
            }
            .footer-info {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .legal-info {
                text-align: center;
            }
            .container {
                padding: 20px;
            }
        }
        a {
            color: #ecf0f1;
            text-decoration: none;
        }
        a:hover {
            text-decoration: underline;
        }
        /* 默认样式：三列布局 */
        .page-list {
            display: flex;
            justify-content: space-between;
        }
        .page-list .column {
            flex: 1;
            margin: 0 10px;
        }
        /* 移动端样式：单列布局 */
        @media (max-width: 768px) {
            .page-list {
                display: block;
            }
            .page-list .column {
                margin: 0;
            }
        }
        /* 默认样式：h1 字号 */
        h1 {
            font-size: 2.5rem; /* 默认字号，适用于桌面端 */
            font-weight: bold; /* 加粗 */
            color: #3498db; /* 文字颜色 */
            margin: 20px 0; /* 上下边距 */
            text-align: center; /* 居中对齐 */
        }
        /* 移动端样式：h1 字号 */
        @media (max-width: 768px) {
            h1 {
                font-size: 1.5rem; /* 移动端字号稍小 */
            }
        }

        /* 轮播样式 */
        .banner-container {
         position: relative;
         max-width: 100%; /* 最大宽度为父容器的宽度 */
         width: 56.8%; /* 设置轮播容器的宽度为 80% */
         margin: 2px auto; /* 上下边距为 20px，左右自动居中 */
         overflow: hidden;
        }

        /* 移动端样式：轮播容器宽度为 100% */
        @media (max-width: 768px) {
        .banner-container {
        width: 100%; /* 移动端宽度为 100% */
        margin: 10px 0; /* 移动端上下边距为 10px，左右边距为 0 */
            }
        }

        .banner-slide {
            display: none;
            width: 100%;
        }

        .banner-slide img {
            width: 100%;
            height: auto;
        }

        .prev, .next {
            cursor: pointer;
            position: absolute;
            top: 50%;
            width: auto;
            padding: 16px;
            margin-top: -22px;
            font-weight: bold;
            font-size: 18px;
            transition: 0.6s ease;
            border-radius: 0 3px 3px 0;
            user-select: none;
        }

        .next {
            right: 0;
            border-radius: 3px 0 0 3px;
        }

        .prev:hover, .next:hover {
            background-color: rgba(0, 0, 0, 0.8);
        }
        
        
        /* 友情链接样式 */
        .footer-links {
            text-align: center;
            padding: 20px 0;
            background-color: #e7e9eb;
            border-top: 1px solid #e9ecef;
        }

        .footer-links span {
            font-weight: bold;
            margin-right: 10px;
        }

        .footer-links a {
            color: #007bff;
            text-decoration: none;
            margin: 0 5px;
            display: inline-block; /* 确保链接在移动端换行 */
        }

        .footer-links a:hover {
            text-decoration: underline;
        }

        /* 响应式设计 */
        @media (max-width: 600px) {
            .footer-links {
                padding: 15px 0;
            }

            .footer-links a {
                margin: 5px 10px; /* 在移动端增加上下间距 */
                display: block; /* 移动端每行显示一个链接 */
            }
        }