/* 独享CSS - 文章内容页主体部分 */
        main {
            margin-top: 80px;
        }

        /* 页面标题区域 */
        .page-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--text-light);
            padding: 60px 0;
            text-align: center;
        }

        .page-header h1 {
            font-size: 36px;
            margin-bottom: 15px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .page-meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 15px;
            font-size: 14px;
            opacity: 0.9;
            flex-wrap: wrap;
        }

        .article-tags {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .tag {
            background-color: rgba(255, 255, 255, 0.2);
            color: var(--text-light);
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 14px;
        }

        /* 文章主体区域 */
        .section {
            padding: 80px 0;
        }

        .article-container {
            max-width: 900px;
            margin: 0 auto;
        }

        /* 文章主体样式 */
        .article-content {
            width: 100%;
        }

        .article-content h2 {
            font-size: 28px;
            color: var(--primary-color);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-color);
        }

        .article-content h3 {
            font-size: 22px;
            color: var(--secondary-color);
            margin: 30px 0 15px;
        }

        .article-content h4 {
            font-size: 18px;
            color: var(--dark-color);
            margin: 25px 0 12px;
        }

        .article-content h5 {
            font-size: 16px;
            color: var(--dark-color);
            margin: 20px 0 10px;
        }

        .article-content p {
            margin-bottom: 20px;
            text-align: justify;
        }

        .article-content img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 25px auto;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent-color);
            padding-left: 20px;
            margin: 25px 0;
            font-style: italic;
            color: #555;
        }

        .article-content ul, .article-content ol {
            margin: 20px 0;
            padding-left: 30px;
        }

        .article-content li {
            margin-bottom: 10px;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
        }

        .article-content th, .article-content td {
            border: 1px solid #ddd;
            padding: 12px 15px;
            text-align: left;
        }

        .article-content th {
            background-color: var(--light-color);
            color: var(--primary-color);
        }

        .article-content tr:nth-child(even) {
            background-color: #f9f9f9;
        }

        /* 上下篇导航 */
        .article-navigation {
            display: flex;
            justify-content: space-between;
            margin: 60px 0 40px;
            padding: 25px 0;
            border-top: 1px solid #eee;
            border-bottom: 1px solid #eee;
        }

        .nav-item {
            flex: 1;
            padding: 15px;
        }

        .nav-prev {
            text-align: left;
            border-right: 1px solid #eee;
        }

        .nav-next {
            text-align: right;
        }

        .nav-label {
            font-size: 14px;
            color: #666;
            margin-bottom: 5px;
        }

        .nav-title {
            font-weight: bold;
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
            display: block;
        }

        .nav-title:hover {
            color: var(--secondary-color);
        }

        /* 相关文章 */
        .related-articles {
            margin-top: 40px;
        }

        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-title h2 {
            font-size: 28px;
            color: var(--primary-color);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: -10px;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: var(--accent-color);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
        }

        .related-card {
            background-color: var(--light-color);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .related-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .related-image {
            height: 180px;
            overflow: hidden;
        }

        .related-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .related-card:hover .related-image img {
            transform: scale(1.05);
        }

        .related-content {
            padding: 20px;
        }

        .related-content h3 {
            margin-bottom: 10px;
            font-size: 18px;
        }

        .related-content h3 a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }

        .related-content h3 a:hover {
            color: var(--secondary-color);
        }

        .related-meta {
            display: flex;
            justify-content: space-between;
            color: #666;
            font-size: 14px;
            margin-top: 15px;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .article-container {
                padding: 0 15px;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            
            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                flex-direction: column;
                background-color: var(--primary-color);
                transition: var(--transition);
                padding: 20px 0;
                box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-item {
                margin: 10px 0;
                text-align: center;
            }
            
            .page-header h1 {
                font-size: 28px;
            }
            
            .article-navigation {
                flex-direction: column;
            }
            
            .nav-item {
                padding: 10px 0;
                border-right: none;
                border-bottom: 1px solid #eee;
            }
            
            .nav-item:last-child {
                border-bottom: none;
            }
        }