/* 文章页特定样式 */
        .article-header {
            padding: 160px 0 80px;
            background: linear-gradient(135deg, rgba(26, 95, 180, 0.05), rgba(255, 126, 95, 0.05));
            text-align: center;
        }
        
        .article-title {
            font-size: 3.2rem;
            margin-bottom: 20px;
            color: var(--primary-dark);
            line-height: 1.2;
        }
        
        .article-meta {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 40px;
            color: var(--gray);
            font-size: 1.1rem;
        }
        
        .article-meta-item {
            display: flex;
            align-items: center;
        }
        
        .article-meta-item i {
            margin-right: 8px;
            color: var(--accent);
        }
        
        .article-content {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .article-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 30px auto;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.article-content img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-hover);
}

.article-content h2 {
    font-size: 2.2rem;
    color: var(--primary-dark);
    margin: 50px 0 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-gray);
    position: relative;
}

.article-content h2:after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.article-content h3 {
    font-size: 1.8rem;
    color: var(--primary);
    margin: 40px 0 20px;
    padding-left: 15px;
    position: relative;
}

.article-content h3:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.3em;
    height: 1.2em;
    width: 5px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    border-radius: 3px;
}

.article-content h4 {
    font-size: 1.4rem;
    color: var(--dark);
    margin: 30px 0 15px;
    font-weight: 600;
}

.article-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    color: var(--dark);
    text-align: justify;
}

/* 列表样式 */
.article-content ul, 
.article-content ol {
    margin: 20px 0;
    padding-left: 30px;
}

.article-content li {
    margin-bottom: 10px;
    line-height: 1.7;
}

.article-content ul li {
    list-style-type: disc;
}

.article-content ol li {
    list-style-type: decimal;
}



        
        .article-image {
            width: 100%;
            height: 400px;
            border-radius: 15px;
            overflow: hidden;
            margin: 50px 0;
            box-shadow: var(--shadow);
            position: relative;
        }
        
        .article-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .article-image:hover img {
            transform: scale(1.05);
        }
        
        .article-section {
            margin-bottom: 50px;
            opacity: 0;
            transform: translateY(40px);
            animation: fadeInUp 1s forwards;
        }
        
        .article-section:nth-child(1) { animation-delay: 0.2s; }
        .article-section:nth-child(2) { animation-delay: 0.4s; }
        .article-section:nth-child(3) { animation-delay: 0.6s; }
        .article-section:nth-child(4) { animation-delay: 0.8s; }
        .article-section:nth-child(5) { animation-delay: 1s; }
        
        .article-section h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 25px;
            position: relative;
            padding-left: 20px;
        }
        
        .article-section h2:before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 6px;
            background: linear-gradient(to bottom, var(--primary), var(--accent));
            border-radius: 3px;
        }
        
        .highlight-box {
            background: linear-gradient(135deg, rgba(26, 95, 180, 0.05), rgba(255, 126, 95, 0.05));
            border-left: 4px solid var(--accent);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 10px 10px 0;
        }
        
        .highlight-box h4 {
            color: var(--accent);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
        }
        
        .highlight-box h4 i {
            margin-right: 10px;
        }
        
        /* 广告横幅 */
        .ad-banner {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 40px;
            border-radius: 15px;
            margin: 60px 0;
            text-align: center;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }
        
        .ad-banner:before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            animation: pulse 6s infinite linear;
        }
        
        .ad-banner h2 {
            font-size: 2rem;
            margin-bottom: 15px;
            position: relative;
            z-index: 2;
        }
        
        .ad-banner p {
            font-size: 1.2rem;
            margin-bottom: 25px;
            position: relative;
            z-index: 2;
        }
        
        /* 相关文章 */
        .related-articles {
            background: var(--light);
        }
        
        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
        }
        
        .knowledge-card {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            opacity: 0;
            transform: translateY(40px);
            animation: fadeInUp 1s forwards;
        }
        
        .knowledge-card:nth-child(1) { animation-delay: 0.2s; }
        .knowledge-card:nth-child(2) { animation-delay: 0.4s; }
        .knowledge-card:nth-child(3) { animation-delay: 0.6s; }
        
        .knowledge-card:hover {
            transform: translateY(-15px);
            box-shadow: var(--shadow-hover);
        }
        
        .knowledge-image {
            height: 220px;
            overflow: hidden;
            position: relative;
        }
        
        .knowledge-image:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(45deg, rgba(26, 95, 180, 0.3), rgba(255, 126, 95, 0.3));
            z-index: 1;
            opacity: 0;
            transition: var(--transition);
        }
        
        .knowledge-card:hover .knowledge-image:before {
            opacity: 1;
        }
        
        .knowledge-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .knowledge-card:hover .knowledge-image img {
            transform: scale(1.1);
        }
        
        .knowledge-content {
            padding: 25px;
        }
        
        .knowledge-content h2 {
            font-size: 1.4rem;
            margin-bottom: 15px;
        }
        
 
        /* 动画 */
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes pulse {
            0% {
                transform: rotate(0deg);
            }
            100% {
                transform: rotate(360deg);
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            h2 {
                font-size: 2.5rem;
            }
            
            .article-title {
                font-size: 2.8rem;
            }
        }
        
        @media (max-width: 992px) {
            h2 {
                font-size: 2.2rem;
            }
            
            .article-title {
                font-size: 2.4rem;
            }
            
            .knowledge-grid {
                grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            }
        }
        
        @media (max-width: 768px) {
            
            
              .article-content h2 {
        font-size: 1.8rem;
        margin: 40px 0 20px;
    }
    
    .article-content h3 {
        font-size: 1.5rem;
        margin: 30px 0 15px;
    }
    
    .article-content h4 {
        font-size: 1.2rem;
        margin: 25px 0 12px;
    }
    
    .article-content p {
        font-size: 1rem;
        line-height: 1.7;
    }
            .mobile-toggle {
                display: block;
            }
            
            nav ul {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background: white;
                flex-direction: column;
                align-items: center;
                padding: 30px 0;
                box-shadow: 0 10px 30px rgba(0,0,0,0.1);
                transition: var(--transition);
                z-index: 999;
            }
            
            nav ul.active {
                left: 0;
            }
            
            nav li {
                margin: 15px 0;
            }
            
            .header-phone {
                display: none;
            }
            
            .article-title {
                font-size: 2rem;
            }
            
            section {
                padding: 80px 0;
            }
            
            .article-header {
                padding: 140px 0 60px;
            }
        }
        
        @media (max-width: 576px) {
            
            
               .article-content h2 {
        font-size: 1.6rem;
    }
    
    .article-content h3 {
        font-size: 1.3rem;
        padding-left: 10px;
    }
    
    .article-content h4 {
        font-size: 1.1rem;
    }
    
    .article-content ul, 
    .article-content ol {
        padding-left: 20px;
    }
            
            h2 {
                font-size: 2rem;
            }
            
            .section-subtitle {
                font-size: 1.1rem;
            }
            
            .knowledge-grid {
                grid-template-columns: 1fr;
            }
            
            .article-title {
                font-size: 1.8rem;
            }
            
            .btn {
                padding: 12px 30px;
                font-size: 1rem;
            }
            
            .ad-banner {
                padding: 30px 20px;
            }
            
            .ad-banner h2 {
                font-size: 1.6rem;
            }
        }