/* 文章页特有样式 */
        .article-hero {
            padding: 180px 0 100px;
            background: var(--gradient);
            color: var(--white);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,70 Q25,30 50,70 T100,70 L100,100 L0,100 Z" fill="rgba(255,255,255,0.1)"/></svg>');
            background-size: cover;
            z-index: 0;
        }
        
        .article-hero-content {
            position: relative;
            z-index: 1;
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .article-hero h1 {
            font-size: 3.5rem;
            margin-bottom: 25px;
            font-weight: 800;
            line-height: 1.2;
            text-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        
        .article-meta {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 30px;
            margin-top: 30px;
            font-size: 1.1rem;
        }
        
        .article-meta span {
            display: flex;
            align-items: center;
        }
        
        .article-meta i {
            margin-right: 8px;
            font-size: 1.2rem;
        }
        
        /* 文章内容区域 */
        .article-content {
            background: var(--white);
            border-radius: 20px;
            padding: 60px;
            margin-top: -60px;
            position: relative;
            z-index: 10;
            box-shadow: var(--shadow-lg);
        }
        
        .article-body {
            font-size: 1.15rem;
            line-height: 1.8;
        }
        
        .article-body h2 {
            font-size: 2rem;
            margin: 50px 0 25px;
            color: var(--dark);
            position: relative;
            padding-left: 20px;
        }
        
        .article-body h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 5px;
            background: var(--gradient);
            border-radius: 3px;
        }
        
        .article-body h3 {
            font-size: 1.5rem;
            margin: 40px 0 20px;
            color: var(--dark);
        }
        
        .article-body p {
            margin-bottom: 25px;
        }
        
        .article-body ul, .article-body ol {
            margin: 20px 0;
            padding-left: 30px;
        }
        
        .article-body li {
            margin-bottom: 10px;
            position: relative;
        }
        
        .article-body ul li::before {
            content: '•';
            color: var(--primary);
            font-weight: bold;
            position: absolute;
            left: -20px;
        }
        
        .article-body blockquote {
            background: var(--light);
            border-left: 5px solid var(--primary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 10px 10px 0;
            font-style: italic;
            position: relative;
        }
        
        .article-body blockquote::before {
            content: '"';
            font-size: 4rem;
            color: var(--primary-light);
            opacity: 0.2;
            position: absolute;
            top: -10px;
            left: 10px;
            font-family: serif;
        }
        
        .article-image {
            margin: 40px 0;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .article-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }
        
        .article-image:hover img {
            transform: scale(1.05);
        }
        
        .article-image figcaption {
            text-align: center;
            padding: 15px;
            font-size: 0.95rem;
            color: #64748b;
            background: #f8fafc;
        }
        
        /* 广告横幅 */
        .ad-banner {
            background: var(--gradient-light);
            color: var(--white);
            padding: 40px;
            border-radius: 15px;
            text-align: center;
            margin: 60px 0;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .ad-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 Q50,50 100,0 L100,100 L0,100 Z" fill="rgba(255,255,255,0.1)"/></svg>');
            background-size: cover;
            z-index: 0;
            animation: float 10s infinite linear;
        }
        
        .ad-banner-content {
            position: relative;
            z-index: 1;
        }
        
        .ad-banner h3 {
            font-size: 2.2rem;
            margin-bottom: 15px;
            font-weight: 700;
        }
        
        .ad-banner p {
            font-size: 1.2rem;
            margin-bottom: 25px;
            opacity: 0.9;
        }
        
        /* 相关文章 */
        .related-articles {
            margin-top: 80px;
        }
        
        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
        }
        
        .knowledge-card {
            background: var(--white);
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
        }
        
        .knowledge-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }
        
        .knowledge-image {
            height: 220px;
            overflow: hidden;
            position: relative;
        }
        
        .knowledge-image::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--gradient);
            opacity: 0;
            transition: var(--transition);
            z-index: 1;
        }
        
        .knowledge-card:hover .knowledge-image::before {
            opacity: 0.2;
        }
        
        .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 h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--dark);
            font-weight: 700;
            transition: var(--transition);
        }
        
        .knowledge-card:hover .knowledge-content h3 {
            color: var(--primary);
        }
        
        .knowledge-content p {
            color: #64748b;
            margin-bottom: 20px;
            font-size: 1rem;
        }
        
        .read-more {
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            transition: var(--transition);
            position: relative;
        }
        
        .read-more::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }
        
        .read-more:hover::after {
            width: 100%;
        }
        
        .read-more i {
            margin-left: 8px;
            transition: var(--transition);
        }
        
        .read-more:hover i {
            transform: translateX(8px);
        }
        
        /* 服务推荐 */
        .services-recommendation {
            background: var(--light);
            padding: 100px 0;
        }
        
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
        }
        
        .service-card {
            background: var(--white);
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
            padding: 40px 30px;
            position: relative;
            z-index: 1;
        }
        
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient);
            transform: scaleX(0);
            transition: var(--transition);
            transform-origin: left;
        }
        
        .service-card:hover {
            transform: translateY(-15px) scale(1.02);
            box-shadow: var(--shadow-lg);
        }
        
        .service-card:hover::before {
            transform: scaleX(1);
        }
        
        .service-icon {
            width: 100px;
            height: 100px;
            background: var(--gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: var(--white);
            font-size: 2.5rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .service-icon::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.2);
            transition: var(--transition);
        }
        
        .service-card:hover .service-icon {
            transform: rotateY(180deg);
        }
        
        .service-card:hover .service-icon::before {
            left: 100%;
        }
        
        .service-card h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark);
            font-weight: 700;
        }
        
        .service-card p {
            margin-bottom: 25px;
            color: #64748b;
            font-size: 1.1rem;
        }
        
        .price {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin: 30px 0;
            position: relative;
            display: inline-block;
            width: 100%;
            text-align: center;
        }
        
        .price::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gradient);
            transform: scaleX(0);
            transition: var(--transition);
        }
        
        .service-card:hover .price::after {
            transform: scaleX(1);
        }
        
        .price span {
            font-size: 1.1rem;
            color: #64748b;
            font-weight: normal;
        }
        
        .service-card .btn {
            display: block;
            margin: 0 auto;
            width: fit-content;
        }
        
     
        /* 动画定义 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.5);
            }
            70% {
                box-shadow: 0 0 0 15px rgba(37, 99, 235, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
            }
        }
        
        @keyframes float {
            0% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
            100% {
                transform: translateY(0);
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 992px) {
            .article-hero h1 {
                font-size: 2.8rem;
            }
            
            .article-content {
                padding: 40px;
            }
            
            .nav-contact {
                display: none;
            }
            
            .friend-links ul {
                flex-direction: column;
                gap: 10px;
            }
        }
        
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 80px);
                background: var(--white);
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding-top: 60px;
                transition: var(--transition);
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-menu li {
                margin: 20px 0;
            }
            
            .nav-toggle {
                display: block;
            }
            
            .article-hero {
                padding: 150px 0 80px;
            }
            
            .article-hero h1 {
                font-size: 2.2rem;
            }
            
            .article-content {
                padding: 30px 20px;
                margin-top: -40px;
            }
            
            .section-title h2 {
                font-size: 2.5rem;
            }
            
            .section {
                padding: 80px 0;
            }
            
            .service-grid {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .section {
                padding: 60px 0;
            }
            
            .article-hero h1 {
                font-size: 1.8rem;
            }
            
            .article-meta {
                flex-direction: column;
                gap: 15px;
            }
            
            .advantage-grid, .knowledge-grid {
                grid-template-columns: 1fr;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            
            .ad-banner {
                padding: 30px 20px;
            }
            
            .ad-banner h3 {
                font-size: 1.8rem;
            }
        }