:root {
            --primary: #005aab;
            --primary-dark: #004488;
            --primary-light: #3377cc;
            --secondary: #d50100;
            --secondary-dark: #a00000;
            --secondary-light: #ff3333;
            --accent: #ffab00;
            --light: #f5f5f5;
            --dark: #212121;
            --gray: #757575;
            --gray-light: #e0e0e0;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Noto Sans SC', sans-serif;
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
            background-color: #f9f9f9;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        
        a:hover {
            color: var(--secondary);
        }
        
        .container {
            max-width: 1200px;
        }
        
        /* 头部样式 */
        header {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo img {
            height: 50px;
            margin-right: 15px;
        }
        
        .logo-text {
            font-size: 1.5rem;
            font-weight: 700;
        }
        
        .logo-subtitle {
            font-size: 0.8rem;
            opacity: 0.8;
        }
        
        /* 导航样式 */
        .nav-container {
            display: flex;
            align-items: center;
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        
        .nav-item {
            position: relative;
        }
        
        .nav-link {
            display: block;
            padding: 15px 20px;
            font-weight: 500;
            color: white;
            transition: all 0.3s ease;
        }
        
        .nav-link:hover, .nav-link.active {
            color: white;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
        }
        
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: var(--secondary);
        }
        
        /* 页面标题样式 */
        .page-header {
            background: linear-gradient(rgba(0, 90, 171, 0.8), rgba(0, 68, 136, 0.8)), url('https://www.maccaslans.com/storage/18130/banner/20180706/20180706150054_54860.png');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 60px 0;
            text-align: center;
        }
        
        .page-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 15px;
        }
        
        .page-subtitle {
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 主要内容区域 */
        .section {
            padding: 60px 0;
        }
        
        .section-title {
            margin-bottom: 30px;
            position: relative;
            padding-bottom: 15px;
        }
        
        .section-title h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 3px;
            background-color: var(--secondary);
        }
        
        /* 侧边栏样式 */
        .sidebar {
            background: white;
            border-radius: 10px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            margin-bottom: 30px;
        }
        
        .sidebar-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--primary);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        
        .category-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .category-item {
            margin-bottom: 10px;
        }
        
        .category-link {
            display: block;
            padding: 10px 15px;
            color: var(--dark);
            border-radius: 5px;
            transition: all 0.3s ease;
        }
        
        .category-link:hover, .category-link.current {
            background-color: rgba(0, 90, 171, 0.1);
            color: var(--primary);
            padding-left: 20px;
        }
        
        .contact-info {
            margin-top: 20px;
        }
        
        .contact-info p {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }
        
        .contact-info i {
            margin-right: 10px;
            color: var(--primary);
            width: 20px;
        }
        
        /* 文章列表样式 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .article-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            height: 100%;
        }
        
        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        
        .article-img {
            height: 200px;
            background-size: cover;
            background-position: center;
        }
        
        .article-content {
            padding: 20px;
        }
        
        .article-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--primary);
            line-height: 1.4;
        }
        
        .article-title a:hover {
            color: var(--secondary);
        }
        
        .article-excerpt {
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 15px;
            /* 限制为两行，超出显示省略号 */
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            text-overflow: ellipsis;
            line-height: 1.5;
            min-height: 3em;
        }
        
        .article-meta {
            display: flex;
            justify-content: space-between;
            color: var(--gray-light);
            font-size: 0.8rem;
        }
        
        /* 分页样式 */
        .pagination {
            display: flex;
            justify-content: center;
            margin-top: 40px;
        }
        
        .page-item {
            margin: 0 5px;
        }
        
        .page-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 5px;
            background-color: white;
            color: var(--dark);
            border: 1px solid var(--gray-light);
            transition: all 0.3s ease;
        }
        
        .page-link:hover {
            background-color: var(--primary);
            color: white;
            border-color: var(--primary);
        }
        
        .page-item.active .page-link {
            background-color: var(--secondary);
            color: white;
            border-color: var(--secondary);
        }
        
        /* 页脚样式 */
        footer {
            background-color: var(--dark);
            color: white;
            padding: 60px 0 20px;
        }
        
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-logo {
            margin-bottom: 20px;
        }
        
        .footer-logo img {
            height: 50px;
        }
        
        .footer-about {
            margin-bottom: 20px;
            opacity: 0.8;
        }
        
        .footer-title {
            font-size: 1.2rem;
            margin-bottom: 20px;
            color: var(--accent);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            opacity: 0.8;
            transition: all 0.3s ease;
        }
        
        .footer-links a:hover {
            opacity: 1;
            color: var(--accent);
            padding-left: 5px;
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            opacity: 0.7;
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .page-header {
                padding: 50px 0;
            }
            
            .page-title {
                font-size: 2rem;
            }
        }
        
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                text-align: center;
            }
            
            .logo {
                margin-bottom: 15px;
            }
            
            .nav-menu {
                flex-wrap: wrap;
                justify-content: center;
            }
            
            .page-header {
                padding: 40px 0;
            }
            
            .page-title {
                font-size: 1.8rem;
            }
            
            .page-subtitle {
                font-size: 1rem;
            }
            
            .articles-grid {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .section {
                padding: 40px 0;
            }
            
            .section-title h2 {
                font-size: 1.5rem;
            }
            
            .page-header {
                padding: 30px 0;
            }
            
            .page-title {
                font-size: 1.5rem;
            }
        }