:root {
            --primary-color: #1a6fc4;
            --primary-light: #2c85e6;
            --primary-dark: #0d5aa7;
            --secondary-color: #f8f9fa;
            --accent-color: #17a2b8;
            --text-color: #333;
            --text-light: #666;
            --light-text: #fff;
            --border-radius: 8px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);
            --transition: all 0.3s ease;
        }
        
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            color: var(--text-color);
            line-height: 1.6;
            scroll-behavior: smooth;
        }
        
        /* 通用样式 */
        .section-title {
            position: relative;
            display: inline-block;
            margin-bottom: 40px;
            padding-bottom: 15px;
            font-weight: 700;
            font-size: 28px;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 3px;
            background-color: var(--primary-color);
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
            border: none;
            padding: 10px 20px;
            border-radius: var(--border-radius);
            transition: var(--transition);
            font-weight: 500;
        }
        
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        
        /* 顶部信息栏 */
        .top-bar {
            background-color: var(--secondary-color);
            padding: 15px 0;
            box-shadow: var(--shadow-sm);
        }
        
        .logo-container {
            display: flex;
            align-items: center;
        }
        
        .logo {
            width: 80px;
            height: 80px;
            background-color: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            border-radius: var(--border-radius);
            color: var(--light-text);
            font-weight: bold;
            font-size: 24px;
            box-shadow: var(--shadow-sm);
        }
        
        .company-name {
            font-size: 24px;
            font-weight: bold;
            color: var(--primary-color);
            margin-bottom: 5px;
        }
        
        .company-desc {
            font-size: 14px;
            color: var(--text-light);
        }
        
        .contact-info {
            display: flex;
            align-items: center;
            justify-content: flex-end;
        }
        
        .phone-icon {
            font-size: 28px;
            color: var(--primary-color);
            margin-right: 10px;
        }
        
        .phone-number {
            font-size: 20px;
            font-weight: bold;
            color: var(--primary-color);
            transition: var(--transition);
        }
        
        .phone-number:hover {
            color: var(--primary-dark);
        }
        
        /* 导航菜单 */
        .navbar {
            background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
            padding: 0;
            box-shadow: var(--shadow-md);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .navbar .nav-link {
            color: var(--light-text);
            font-size: 16px;
            padding: 28px 28px;
            margin: 0 5px;
            transition: var(--transition);
            position: relative;
        }
        
        .navbar .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        
        .navbar .nav-link:hover::after,
        .navbar .nav-link.active::after {
            width: 100%;
        }
        
        .navbar .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        
        /* Banner图 */
        .news-banner {
            height: 300px;
            background-image: url('https://picsum.photos/id/20/1920/1080');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            margin-bottom: 40px; /* 增加底部间距 */
        }
        
        .news-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
        }
        
        .banner-content {
            position: relative;
            text-align: center;
            color: var(--light-text);
            max-width: 800px;
            padding: 20px;
        }
        
        .banner-content h1 {
            font-size: 42px;
            margin-bottom: 15px;
            animation: fadeInDown 1s ease;
        }
        
        .banner-content p {
            font-size: 18px;
            animation: fadeInUp 1s ease 0.3s forwards;
            opacity: 0;
        }
        
        /* 新闻内容区域 */
        .news-content {
            padding: 80px 0; /* 保持与服务项目相同的上下间距 */
        }
        
        .container {
            max-width: 1200px;
        }
        
        /* 左侧菜单区域 */
        .news-sidebar {
            background-color: var(--secondary-color);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        
        .news-categories {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        
        .category-item {
            border-bottom: 1px solid #e0e0e0;
        }
        
        .category-link {
            display: block;
            padding: 18px 25px;
            color: var(--text-color);
            text-decoration: none;
            transition: var(--transition);
            font-weight: 500;
            position: relative;
        }
        
        .category-link::after {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 20px;
            transition: var(--transition);
        }
        
        .category-item.active .category-link,
        .category-link:hover {
            background-color: var(--primary-color);
            color: var(--light-text);
            padding-left: 30px;
        }
        
        .category-item.active .category-link::after,
        .category-link:hover::after {
            transform: rotate(90deg);
        }
        
        /* 推荐新闻 */
        .sidebar-news {
            padding: 25px;
            border-bottom: 1px solid #e0e0e0;
        }
        
        .sidebar-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--primary-color);
            position: relative;
            padding-bottom: 10px;
        }
        
        .sidebar-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: var(--primary-color);
        }
        
        .recommended-news {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        
        .recommended-item {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px dashed #e0e0e0;
        }
        
        .recommended-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        
        .recommended-link {
            color: var(--text-color);
            text-decoration: none;
            transition: var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .recommended-link:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }
        
        .news-date {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 5px;
        }
        
        /* 联系我们 */
        .sidebar-contact {
            padding: 25px;
        }
        
        .contact-item {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
        }
        
        .contact-icon {
            width: 30px;
            height: 30px;
            background-color: rgba(26, 111, 196, 0.1);
            color: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            flex-shrink: 0;
        }
        
        .contact-info {
            flex-grow: 1;
        }
        
        .contact-info p {
            margin: 0;
        }
        
        /* 右侧新闻列表 */
        .news-list-container {
            padding-left: 30px;
        }
        
        .news-header {
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid #e0e0e0;
        }
        
        .news-header h2 {
            font-size: 24px;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        
        .news-path {
            color: var(--text-light);
            font-size: 14px;
        }
        
        .news-path a {
            color: var(--text-light);
            text-decoration: none;
        }
        
        .news-path a:hover {
            color: var(--primary-color);
        }
        
        /* 新闻条目 - 移除图片，简化布局 */
        .news-items {
            margin-bottom: 40px;
        }
        
        .news-item {
            margin-bottom: 35px;
            padding-bottom: 35px;
            border-bottom: 1px solid #e0e0e0;
            transition: var(--transition);
        }
        
        .news-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        
        .news-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            padding: 15px;
            border-radius: var(--border-radius);
            margin-left: -15px;
            margin-right: -15px;
        }
        
        .news-content {
            padding: 0;
        }
        
        .news-title {
            font-size: 20px;
            margin-bottom: 15px;
            transition: var(--transition);
        }
        
        .news-title a {
            color: var(--text-color);
            text-decoration: none;
        }
        
        .news-item:hover .news-title a {
            color: var(--primary-color);
        }
        
        .news-meta {
            margin-bottom: 15px;
            color: var(--text-light);
            font-size: 14px;
        }
        
        .news-meta span {
            display: flex;
            align-items: center;
        }
        
        .news-meta i {
            margin-right: 5px;
        }
        
        .news-excerpt {
            color: var(--text-light);
            margin-bottom: 20px;
            line-height: 1.8;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .read-more {
            display: inline-flex;
            align-items: center;
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
        }
        
        .read-more i {
            margin-left: 5px;
            transition: var(--transition);
        }
        
        .read-more:hover {
            color: var(--primary-dark);
        }
        
        .read-more:hover i {
            transform: translateX(5px);
        }
        
        /* 分页 */
        .pagination-container {
            text-align: center;
        }
        
        .pagination {
            display: inline-flex;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .pagination li {
            margin: 0 5px;
        }
        
        .pagination a {
            display: block;
            width: 40px;
            height: 40px;
            line-height: 40px;
            text-align: center;
            border-radius: var(--border-radius);
            color: var(--text-color);
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid #e0e0e0;
        }
        
        .pagination a:hover,
        .pagination a.active {
            background-color: var(--primary-color);
            color: var(--light-text);
            border-color: var(--primary-color);
        }
        
        .pagination .prev-next a {
            width: auto;
            padding: 0 15px;
        }
        
        /* 底部 - 增加顶部间距 */
        footer {
            background-color: #2c3e50;
            color: var(--light-text);
            padding: 80px 0 30px;
            position: relative;
            margin-top: 40px;
        }
        
        footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
        }
        
        .footer-title {
            font-weight: 600;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: var(--accent-color);
        }
        
        .footer-contact p {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
        }
        
        .footer-contact i {
            margin-right: 10px;
            color: var(--accent-color);
            width: 20px;
        }
        
        .footer-links ul {
            list-style: none;
            padding: 0;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: var(--transition);
            display: inline-block;
        }
        
        .footer-links a:hover {
            color: var(--light-text);
            transform: translateX(5px);
        }
        
        .footer-qrcode {
            display: flex;
            gap: 20px;
        }
        
        .qrcode-item {
            text-align: center;
        }
        
        .qrcode-img {
            background-color: var(--light-text);
            width: 100px;
            height: 100px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--text-color);
        }
        
        .copyright {
            border-top: 1px solid #4a6572;
            padding-top: 25px;
            margin-top: 50px;
            text-align: center;
            font-size: 14px;
            color: #95a5a6;
        }
        
        /* 返回         * 返回顶部顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: var(--light-text);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: var(--shadow-md);
            cursor: pointer;
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 999;
        }
        
        .back-to-top:hover {
            background-color: var(--primary-dark);
            transform: translateY(-5px);
        }
        
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
        
        /* 新闻内容切换的各个面板 */
        .news-panel {
            display: none;
        }
        
        .news-panel.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }
        
        /* 动画效果 */
        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }
        
        /* 响应式调整 */
        @media (max-width: 992px) {
            .navbar .nav-link {
                padding: 18px 20px;
                margin: 0 3px;
            }
            
            .news-banner {
                height: 250px;
            }
            
            .banner-content h1 {
                font-size: 36px;
            }
            
            .news-list-container {
                padding-left: 0;
                margin-top: 40px;
            }
        }
        
        @media (max-width: 768px) {
            .news-banner {
                height: 200px;
            }
            
            .banner-content h1 {
                font-size: 30px;
            }
            
            .banner-content p {
                font-size: 16px;
            }
            
            .company-name {
                font-size: 20px;
            }
            
            .phone-number {
                font-size: 18px;
            }
            
            .section-title {
                font-size: 24px;
            }
            
            .navbar .nav-link {
                padding: 15px 15px;
                margin: 0;
            }
            
            .news-title {
                font-size: 18px;
            }
        }
        
        @media (max-width: 576px) {
            .news-banner {
                height: 180px;
            }
            
            .banner-content h1 {
                font-size: 24px;
            }
            
            .banner-content p {
                font-size: 14px;
            }
            
            .logo {
                width: 60px;
                height: 60px;
                font-size: 18px;
            }
            
            .company-name {
                font-size: 18px;
            }
            
            .company-desc {
                font-size: 12px;
            }
            
            .phone-icon {
                font-size: 20px;
            }
            
            .phone-number {
                font-size: 16px;
            }
            
            .category-link {
                padding: 15px 20px;
            }
            
            .sidebar-news, .sidebar-contact {
                padding: 20px;
            }
            
            .pagination a {
                width: 34px;
                height: 34px;
                line-height: 34px;
                font-size: 14px;
            }
            
            .footer-qrcode {
                flex-direction: column;
                gap: 15px;
            }
            
            .qrcode-item {
                margin: 0 auto;
            }
        }