:root {
            --theme-color: #00BEBD; 
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-color: #f3f4f6;
            --border-color: #e5e7eb;
            --container-width: 1184px;
            --secondary-color: #dc2626;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        body {
            color: var(--text-dark);
            line-height: 1.6;
            background-color: var(--bg-color);
            /* 防止整个页面出现横向滚动条 */
            overflow-x: hidden; 
        }

        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 15px;
        }

        /* 顶部导航 Header */
        .header {
            background-color: #ffffff;
            border-bottom: 1px solid #e5e7eb;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            padding: 10px 20px;
        }

        .logo {
            font-size: 24px;
            font-weight: bold;
            color: var(--primary-color);
            display: flex;
            align-items: center;
        }

        .logo span {
            color: var(--secondary-color);
            margin-left: 5px;
        }

.nav-wrapper { display: flex; justify-content: space-between; align-items: center; padding: 10px 20px; }
#nav-menu ul { display: flex; list-style: none; }
#nav-menu ul li a { padding: 0 15px; text-decoration: none; color: #333; }
.menu-toggle { display: none; font-size: 24px; cursor: pointer; }
        .contact-btn {
            background-color: var(--secondary-color);
            color: white;
            padding: 10px 24px;
            border-radius: 4px;
            font-weight: bold;
            font-size: 18px;
        }
        /* 内页 Banner */
        .inner-banner {
            background: linear-gradient(rgba(31, 41, 55, 0.8), rgba(31, 41, 55, 0.8)), url('https://dummyimage.com/1920x300/1f2937/fff&text=Services') center/cover;
            color: white;
            padding: 60px 0;
            text-align: center;
        }
        .inner-banner h1 { font-size: 36px; margin-bottom: 10px; }
        .inner-banner p { font-size: 16px; color: #d1d5db; }

        /* 面包屑导航 */
        .breadcrumb {
            padding: 20px 0;
            font-size: 14px;
            color: var(--text-light);
        }
        .breadcrumb a { transition: color 0.2s; }
        .breadcrumb a:hover { color: var(--theme-color); }
        .breadcrumb span { margin: 0 8px; color: #9ca3af; }

        /* 主体布局 */
        .page-layout {
            display: flex;
            gap: 30px;
            padding-bottom: 60px;
            align-items: flex-start;
        }

        .main-content {
            flex: 1;
            background: #ffffff;
            padding: 30px;
            border-radius: 6px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
            min-width: 0; /* 防止内容撑破 flex 子项 */
        }

        .sidebar {
            width: 320px;
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        /* 服务列表样式 */
        .service-list { display: flex; flex-direction: column; }

        .service-item {
            display: flex;
            gap: 25px;
            padding: 25px 0;
            border-bottom: 1px dashed var(--border-color);
            transition: all 0.3s;
        }
        .service-item:first-child { padding-top: 0; }
        .service-item:last-child { border-bottom: none; padding-bottom: 0; }

        .service-thumb {
            width: 200px;
            height: 140px;
            background-color: var(--bg-color);
            border-radius: 4px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #9ca3af;
            overflow: hidden;
        }
        .service-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
        .service-item:hover .service-thumb img { transform: scale(1.05); }

        .service-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-width: 0; /* 配合文字截断 */
        }

        .service-title {
            font-size: 20px;
            font-weight: bold;
            color: var(--text-dark);
            margin-bottom: 10px;
            display: inline-block;
            transition: color 0.2s;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 100%;
        }
        .service-title:hover { color: var(--theme-color); }

        .service-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 15px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* 元数据（发布时间与浏览量） */
        .service-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 13px;
            color: #9ca3af;
        }

        .read-more {
            margin-left: auto;
            color: var(--theme-color);
            font-weight: 500;
            font-size: 14px;
            border: 1px solid var(--theme-color);
            padding: 4px 12px;
            border-radius: 4px;
            transition: all 0.2s;
        }
        .read-more:hover { background-color: var(--theme-color); color: #fff; }

        /* 分页器 */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 40px;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
        }
        .pagination a, .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border: 1px solid var(--border-color);
            background: #fff;
            color: var(--text-dark);
            border-radius: 4px;
            font-size: 14px;
        }
        .pagination a:hover { border-color: var(--theme-color); color: var(--theme-color); }
        .pagination .current { background-color: var(--theme-color); color: #fff; border-color: var(--theme-color); }

        /* 侧边栏 */
        .widget {
            background: #ffffff;
            padding: 20px;
            border-radius: 6px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
            border-top: 3px solid var(--theme-color);
        }
        .widget-title {
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-color);
        }
        .hot-list li { margin-bottom: 12px; }
        .hot-list li:last-child { margin-bottom: 0; }
        .hot-list a {
            font-size: 14px;
            color: var(--text-dark);
            display: block;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .hot-list a:hover { color: var(--theme-color); }
        .hot-list a::before { content: "•"; color: var(--theme-color); margin-right: 8px; font-weight: bold; }
        
        .contact-box { text-align: center; padding: 10px 0; }
        .contact-box .tel { font-size: 24px; font-weight: bold; color: var(--theme-color); margin: 10px 0; }

        /* 页脚 Footer (使用深色系适配专业感) */
        .footer {
            background-color: #1f2937; /* 与之前首页保持一致 */
            color: #9ca3af;
            padding: 60px 0 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-title { color: white; font-size: 18px; margin-bottom: 20px; }
        .footer-info p { margin-bottom: 10px; }
        .copyright {
            text-align: center;
            border-top: 1px solid #374151;
            padding-top: 20px;
            font-size: 14px;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .page-layout { flex-direction: column; }
            .sidebar { width: 100%; }
        }

        @media (max-width: 768px) {
            .inner-banner { padding: 40px 0; }
            .inner-banner h1 { font-size: 28px; }
                    .contact-btn {display:none;}

    .menu-toggle { display: block; }
    #nav-menu { display: none; position: absolute; top: 60px; left: 0; width: 100%; background: #fff; border-bottom: 2px solid #00BEBD; }
    #nav-menu.active { display: block; }
    #nav-menu ul { flex-direction: column; padding: 0; }
    #nav-menu ul li { border-bottom: 1px solid #eee; padding: 15px; text-align: center; }
     
            .service-item { flex-direction: column; gap: 15px; padding: 20px 0; }
            .service-thumb { width: 100%; height: auto; aspect-ratio: 16/9; }
            .service-title { white-space: normal; } /* 移动端标题允许换行 */
            .service-meta { flex-wrap: wrap; gap: 10px; }
            .read-more { margin-left: 0; margin-top: 10px; text-align: center; width: 100%; }
            
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
        }
.side-float-nav { position: fixed; right: 10px; bottom: 20%; z-index: 999; }
.float-item { display: block; width: 50px; height: 50px; background: #00BEBD; color: #fff; text-align: center; line-height: 50px; margin-bottom: 10px; border-radius: 50%; text-decoration: none; font-size: 12px; box-shadow: 0 2px 5px rgba(0,0,0,0.2); }