/* ===== 页面标题 ===== */
        .page-header {
            padding: 150px 0 80px;
            background: linear-gradient(135deg, #e0f2fe 0%, #f0fdf4 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
            margin-top: 70px;
        }
        
        .page-header::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 300px;
            height: 100%;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 200" fill="%2310b981" opacity="0.05"><path d="M50,10 C60,10 70,30 70,60 C70,90 60,110 50,110 C40,110 30,90 30,60 C30,30 40,10 50,10 Z M45,110 L45,190 L55,190 L55,110 Z"/></svg>');
            background-repeat: no-repeat;
            background-position: left bottom;
            background-size: 300px 100%;
            z-index: 0;
        }
        
        .page-header::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 300px;
            height: 100%;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 200" fill="%232563eb" opacity="0.05"><path d="M50,10 C60,10 70,30 70,60 C70,90 60,110 50,110 C40,110 30,90 30,60 C30,30 40,10 50,10 Z M45,110 L45,190 L55,190 L55,110 Z"/></svg>');
            background-repeat: no-repeat;
            background-position: right bottom;
            background-size: 300px 100%;
            z-index: 0;
        }
        
        .page-title {
            font-size: 3rem;
            margin-bottom: 20px;
            color: var(--dark-color);
            position: relative;
            z-index: 1;
        }
        
        .article-meta {
            display: flex;
            justify-content: center;
            align-items: center;
            color: var(--text-light);
            font-size: 1rem;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
            gap: 20px;
        }
        
        .article-meta span {
            display: flex;
            align-items: center;
        }
        
        .article-meta i {
            margin-right: 8px;
        }
        
        /* ===== 文章内容 ===== */
        .article-content {
            padding: 80px 0;
            background: white;
        }
        
        /* 文章主体样式 */
        .article-body {
            width: 100%;
            max-width: 100%;
            margin: 0 auto 60px;
            padding: 0 15px;
        }
        
        .article-body h2 {
            font-size: 2.2rem;
            margin: 40px 0 20px;
            color: var(--dark-color);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light-color);
        }
        
        .article-body h3 {
            font-size: 1.8rem;
            margin: 30px 0 15px;
            color: var(--dark-color);
        }
        
        .article-body h4 {
            font-size: 1.5rem;
            margin: 25px 0 12px;
            color: var(--dark-color);
        }
        
        .article-body h5 {
            font-size: 1.3rem;
            margin: 20px 0 10px;
            color: var(--dark-color);
        }
        
        .article-body p {
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 20px;
            color: var(--text-light);
        }
        
        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 30px 0;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
        }
        
        .article-body img:hover {
            transform: scale(1.02);
        }
        
        .article-body blockquote {
            background: var(--light-color);
            border-left: 4px solid var(--primary-color);
            padding: 20px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
        }
        
        .article-body ul, .article-body ol {
            margin: 20px 0;
            padding-left: 30px;
        }
        
        .article-body li {
            margin-bottom: 10px;
            color: var(--text-light);
        }
        
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            border-radius: 8px;
            overflow: hidden;
        }
        
        .article-body th, .article-body td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid var(--light-color);
        }
        
        .article-body th {
            background: var(--primary-color);
            color: white;
            font-weight: 600;
        }
        
        .article-body tr:nth-child(even) {
            background: var(--light-color);
        }
        
        /* ===== 上下篇文章导航 ===== */
        .article-navigation {
            display: flex;
            justify-content: space-between;
            margin: 60px 0;
            padding: 30px 0;
            border-top: 1px solid var(--light-color);
            border-bottom: 1px solid var(--light-color);
        }
        
        .nav-item-prev, .nav-item-next {
            flex: 1;
            max-width: 45%;
        }
        
        .nav-item-prev {
            text-align: left;
        }
        
        .nav-item-next {
            text-align: right;
        }
        
        .nav-link-prev, .nav-link-next {
            display: inline-block;
            color: var(--dark-color);
            text-decoration: none;
            transition: var(--transition);
            padding: 15px 20px;
            border-radius: 8px;
            background: var(--light-color);
            width: 100%;
        }
        
        .nav-link-prev:hover, .nav-link-next:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
        }
        
        .nav-label {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 5px;
        }
        
        .nav-link-prev:hover .nav-label,
        .nav-link-next:hover .nav-label {
            color: rgba(255, 255, 255, 0.8);
        }
        
        .nav-title {
            font-weight: 600;
            font-size: 1.1rem;
        }
        
        /* ===== 相关文章 ===== */
        .related-articles {
            margin: 60px 0;
            padding: 0 15px;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 40px;
            position: relative;
        }
        
        .section-title h2 {
            font-size: 2.2rem;
            color: var(--dark-color);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            border-radius: 2px;
        }
        
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .related-card {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            opacity: 0;
            transform: translateY(30px);
            background: white;
        }
        
        .related-card.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .related-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .related-image {
            height: 200px;
            overflow: hidden;
        }
        
        .related-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .related-card:hover .related-image img {
            transform: scale(1.1);
        }
        
        .related-content {
            padding: 20px;
        }
        
        .related-content h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }
        
        .related-content h3 a {
            color: var(--dark-color);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .related-content h3 a:hover {
            color: var(--primary-color);
        }
        
        .related-meta {
            display: flex;
            justify-content: space-between;
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 15px;
        }
        
        .related-content p {
            color: var(--text-light);
            margin-bottom: 15px;
        }
        
        .read-more {
            color: var(--primary-color);
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            transition: var(--transition);
        }
        
        .read-more:hover {
            color: var(--accent-color);
        }
        
        .read-more i {
            margin-left: 5px;
            transition: var(--transition);
        }
        
        .read-more:hover i {
            transform: translateX(5px);
        }
        
        /* ===== 独享部分响应式调整 ===== */
        @media (max-width: 992px) {
            .page-title {
                font-size: 2.5rem;
            }
            
            .article-navigation {
                flex-direction: column;
                gap: 20px;
            }
            
            .nav-item-prev, .nav-item-next {
                max-width: 100%;
            }
            
            .related-grid {
                grid-template-columns: 1fr;
            }
            
            /* 移动端隐藏背景图案 */
            .page-header::before,
            .page-header::after {
                display: none;
            }
        }