:root {
            --main-blue: #004a99;
            --accent-orange: #ff6a00;
            --text-dark: #333;
            --text-gray: #666;
            --bg-light: #f8f9fa;
            --border-color: #eeeeee;
        }
        a { text-decoration: none; color: inherit; transition: 0.3s; }
		/* --- 1. 头部与导航 (复用) --- */
        header { background: #fff; padding: 15px 0; }
        .header-flex { display: flex; justify-content: space-between; align-items: center; }
        .phone { font-size: 20px; color: var(--main-blue); font-weight: bold; }

       .main-nav { background: #fff; border-top: 1px solid #eee; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }
        .nav-list { display: flex; justify-content: space-between; list-style: none; }
        .nav-list > li { position: relative; }
        .nav-list > li > a { display: block; padding: 15px 10px; color: #333; font-size: 16px; text-decoration: none; transition: 0.3s; }
        .nav-list > li > a:hover, .nav-list > li > a.active { color: var(--accent-orange); border-bottom: 2px solid var(--accent-orange); }

        /* 下拉菜单 */
        .dropdown:hover .submenu { display: block; }
        .submenu { 
            display: none; position: absolute; top: 100%; left: 0; background: #fff; 
            min-width: 160px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); border-top: 2px solid var(--accent-orange); list-style: none; 
        }
        .submenu li a { display: block; padding: 10px 20px; color: #666; font-size: 14px; text-decoration: none; }
        .submenu li a:hover { background: #fdf2ed; color: var(--accent-orange); }
		
		

        /* 基础复位 */
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--text-dark); line-height: 1.8; background: #fff; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; transition: 0.3s; }

        /* --- 1. 面包屑导航 --- */
        .breadcrumb { background: var(--bg-light); padding: 15px 0; font-size: 14px; color: #888; border-bottom: 1px solid var(--border-color); }
        .breadcrumb a { color: #666; }
        .breadcrumb a:hover { color: var(--main-blue); }
        .breadcrumb span { margin: 0 8px; }

        /* --- 2. 详情页主布局 --- */
        .news-detail-container { padding: 50px 0; display: flex; gap: 40px; }
        
        /* 左侧正文区域 */
        .article-main { flex: 2.5; }
        .article-header { border-bottom: 1px solid var(--border-color); padding-bottom: 25px; margin-bottom: 30px; }
        .article-header h1 { font-size: 32px; color: var(--main-blue); margin-bottom: 15px; line-height: 1.3; }
        .article-meta { display: flex; gap: 20px; color: #999; font-size: 14px; }

        .article-content { font-size: 16px; color: #444; text-align: justify; }
        .article-content p { margin-bottom: 20px; }
        .article-content h3 { color: var(--main-blue); margin: 35px 0 15px; border-left: 4px solid var(--accent-orange); padding-left: 15px; }
        .article-content img { margin: 30px auto; border-radius: 4px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }

        /* 文章脚部：上一篇/下一篇 & 相关文章 */
        .article-footer { margin-top: 60px; border-top: 1px solid var(--border-color); padding-top: 20px; }
        
        /* 上下篇列表 */
        .prev-next { display: flex; flex-direction: column; gap: 12px; padding-bottom: 30px; border-bottom: 1px dashed #eee; }
        .pn-item { font-size: 15px; color: #888; }
        .pn-item a { color: var(--text-dark); font-weight: 500; }
        .pn-item a:hover { color: var(--main-blue); text-decoration: underline; }

        /* 相关文章板块 */
        .related-articles { margin-top: 40px; }
        .related-title { font-size: 18px; font-weight: bold; color: var(--main-blue); margin-bottom: 20px; display: flex; align-items: center; }
        .related-title::before { content: ''; width: 4px; height: 18px; background: var(--accent-orange); margin-right: 10px; display: inline-block; }
        .related-list { list-style: none; }
        .related-list li { padding: 12px 0; border-bottom: 1px solid #f5f5f5; }
        .related-list li a { display: flex; justify-content: space-between; align-items: center; color: #444; font-size: 15px; }
        .related-list li a:hover .rel-text { color: var(--accent-orange); padding-left: 5px; }
        .rel-text { transition: 0.3s; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding-right: 20px; }
        .rel-date { font-size: 13px; color: #999; flex-shrink: 0; }

        /* --- 3. 右侧侧边栏 --- */
        .sidebar { flex: 1; }
        .sidebar-widget { border: 1px solid var(--border-color); padding: 25px; margin-bottom: 30px; border-radius: 4px; }
        .widget-title { font-size: 18px; color: var(--main-blue); margin-bottom: 20px; position: relative; font-weight: bold; }
        .widget-title::after { content: ''; position: absolute; left: 0; bottom: -8px; width: 30px; height: 2px; background: var(--accent-orange); }

        /* 推荐产品 */
        .side-product-list { list-style: none; }
        .side-product-item { display: flex; gap: 15px; margin-bottom: 20px; align-items: center; }
        .side-product-item img { width: 70px; height: 70px; object-fit: cover; border: 1px solid #eee; }
        .side-product-item h4 { font-size: 14px; font-weight: 500; line-height: 1.4; }
        .side-product-item h4 a { color: #333; }
        .side-product-item h4 a:hover { color: var(--main-blue); }

        /* 侧边联系卡片 */
        .side-contact { background: var(--main-blue); color: #fff; padding: 25px; border-radius: 4px; }
        .side-contact h3 { font-size: 20px; margin-bottom: 15px; color: var(--accent-orange); }
        .side-phone { font-size: 22px; font-weight: bold; margin-top: 10px; }
		
        /* --- 底部 (复刻截图样式) --- */
       footer { background-color: #1a1a1a; color: #fff; padding: 60px 0 20px; }
        .footer-container { display: flex; justify-content: space-between; gap: 40px; }
        .footer-nav-grid { display: grid; grid-template-columns: repeat(4, auto); gap: 12px 30px; margin-top: 20px; }
        .footer-nav-grid a { color: #ccc; font-size: 14px; }
        .footer-center .qr-code-box { background: #fff; padding: 5px; width: 110px; margin: 0 auto;}
        .footer-right { text-align: right; }
        .contact-phone { font-size: 28px; font-weight: bold; color: #fff; }
        .footer-bottom { margin-top: 50px; padding-top: 20px; border-top: 1px solid #2d2d2d; color: #666; font-size: 12px; text-align: center; }
		
		

        /* --- 响应式适配 --- */
        @media (max-width: 992px) {
            .news-detail-container { flex-direction: column; }
            .sidebar { order: 2; }
            .article-main { order: 1; }
            .footer-container {flex-direction: column;text-align: center;gap: 40px;}
            .footer-right{text-align: center;}
        }
        @media (max-width: 768px) {
            .article-header h1 { font-size: 24px; }
            .related-list li a { flex-direction: column; align-items: flex-start; gap: 5px; }
            .nav-list {overflow-x: auto;white-space: nowrap;justify-content: flex-start;}
        }