.section-title {
            text-align: center;
            font-size: 2.2rem;
            color: var(--dark-color);
            margin-bottom: 3rem;
            position: relative;
        }
        
        .section-title:after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            margin: 15px auto;
            border-radius: 2px;
        }
        
        /* 页面标题区域 */
        .page-hero {
            padding: 100px 0 60px;
            background: linear-gradient(135deg, #fdf8f5 0%, #f8e9e9 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .page-hero:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('https://images.unsplash.com/photo-1522335789203-aabd1fc54bc9?ixlib=rb-1.2.1&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            z-index: 0;
        }
        
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        
        .page-hero h1 {
            font-size: 3rem;
            color: var(--dark-color);
            margin-bottom: 1rem;
        }
        
        .page-hero h1 span {
            color: var(--primary-color);
        }
        
        .page-hero p {
            font-size: 1.2rem;
            color: #666;
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        
        .category-tags {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 2rem;
        }
        
        .category-tag {
            background-color: rgba(214, 51, 132, 0.1);
            color: var(--primary-color);
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        
        .category-tag:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        
        /* 特色文章区 */
        .featured-section {
            padding: 2rem 0;
            background-color: white;
            position: relative;
        }
        
        .featured-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('https://images.unsplash.com/photo-1522335789203-aabd1fc54bc9?ixlib=rb-1.2.1&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-position: center;
            opacity: 0.05;
            z-index: 0;
        }
        
        .featured-section .container {
            position: relative;
            z-index: 1;
        }
        
        .featured-article {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
        }
        
        .featured-image {
            height: 400px;
        }
        
        .featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .featured-content {
            padding: 2.2rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        
        .featured-category {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            margin-bottom: 1.2rem;
        }
        
        .featured-title {
            font-size: 2rem;
            color: var(--dark-color);
            margin-bottom: 1.2rem;
            line-height: 1.3;
        }
        
        .featured-excerpt {
            font-size: 1.1rem;
            color: var(--text-color);
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        
        .featured-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 2rem;
        }
        
        .featured-date, .featured-reading-time {
            color: #888;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .featured-btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary-color), #e84a8f);
            color: white;
            padding: 12px 30px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            width: fit-content;
            box-shadow: 0 4px 15px rgba(214, 51, 132, 0.3);
        }
        
        .featured-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(214, 51, 132, 0.4);
        }
        
        /* 知识专栏区 */
        .knowledge-section {
            padding: 2rem 0;
            background-color: #f8f9fa;
            position: relative;
        }
        
        .knowledge-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('https://images.unsplash.com/photo-1556228578-9c360e1d8d34?ixlib=rb-1.2.1&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-position: center;
            opacity: 0.05;
            z-index: 0;
        }
        
        .knowledge-section .container {
            position: relative;
            z-index: 1;
        }
        
        .knowledge-filter {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 3rem;
        }
        
        .filter-btn {
            background-color: #f0f0f0;
            color: #666;
            border: none;
            padding: 10px 25px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .filter-btn.active, .filter-btn:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2rem;
        }
        
        .knowledge-card {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        
        .knowledge-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .card-image {
            height: 200px;
            overflow: hidden;
        }
        
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .knowledge-card:hover .card-image img {
            transform: scale(1.05);
        }
        
        .card-content {
            padding: 1.8rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        
        .card-category {
            display: inline-block;
            background-color: rgba(214, 51, 132, 0.1);
            color: var(--primary-color);
            padding: 5px 15px;
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        
        .card-title {
            font-size: 1.4rem;
            color: var(--dark-color);
            margin-bottom: 1rem;
            line-height: 1.4;
        }
        
        .card-excerpt {
            color: var(--text-color);
            margin-bottom: 0rem;
            flex-grow: 1;
        }
        
        .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        
        .card-date {
            color: #888;
            font-size: 0.9rem;
        }
        
        .read-more {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 5px;
            transition: var(--transition);
        }
        
        .read-more:hover {
            color: var(--secondary-color);
            gap: 10px;
        }
        
        /* 知识分类区 */
        .categories-section {
            padding: 2rem 0;
            background-color: white;
            position: relative;
        }
        
        .categories-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-1.2.1&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-position: center;
            opacity: 0.05;
            z-index: 0;
        }
        
        .categories-section .container {
            position: relative;
            z-index: 1;
        }
        
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        
        .category-card {
            background: var(--light-color);
            padding: 2.2rem 2rem;
            border-radius: var(--border-radius);
            text-align: center;
            transition: var(--transition);
            border: 1px solid rgba(214, 51, 132, 0.1);
        }
        
        .category-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--box-shadow);
        }
        
        .category-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), #f8a5c2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.2rem;
            color: white;
            font-size: 32px;
        }
        
        .category-card h3 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            color: var(--dark-color);
        }
        
        .category-card p {
            color: var(--text-color);
            line-height: 1.7;
        }
        
        /* 祛斑方法对比区 */
        .comparison-section {
            padding: 2rem 0;
            background-color: #f8f9fa;
            position: relative;
        }
        
        .comparison-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('https://images.unsplash.com/photo-1556228578-9c360e1d8d34?ixlib=rb-1.2.1&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-position: center;
            opacity: 0.05;
            z-index: 0;
        }
        
        .comparison-section .container {
            position: relative;
            z-index: 1;
        }
        
        .comparison-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            margin-top: 2rem;
        }
        
        .comparison-column {
            background: white;
            padding: 2.2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
        }
        
        .comparison-column h3 {
            font-size: 1.2rem;
            margin-bottom: 1.2rem;
            color: var(--dark-color);
            display: flex;
            align-items: center;
        }
        
        .comparison-column h3 i {
            margin-right: 10px;
        }
        
        .comparison-column.internal h3 {
            color: var(--primary-color);
        }
        
        .comparison-column.external h3 {
            color: #666;
        }
        
        .advantage-list {
            list-style: none;
        }
        
        .advantage-list li {
            margin-bottom: 1rem;
            padding-left: 2rem;
            position: relative;
        }
        
        .advantage-list li:before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
        }
        
        .internal .advantage-list li:before {
            background-color: var(--primary-color);
        }
        
        .external .advantage-list li:before {
            background-color: #ccc;
        }
        .category-tags a{text-decoration: none;
        color:var(--primary-color);
        }

        .category-tag:hover a {
      
            transform: translateY(-5px) scale(1.05);
            box-shadow: 0 10px 25px rgba(214, 51, 132, 0.4);
            background-color:var(--primary-color); 
            color: #fff;
           
        }
        .category-tag .sub-item:hover{ color: #fff;background-color:var(--primary-color); }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .featured-article, .comparison-content {
                grid-template-columns: 1fr;
            }
            
            .featured-image {
                height: 300px;
            }
            
            .page-hero h1 {
                font-size: 2.2rem;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
        }
        
        @media (max-width: 768px) {
            .page-hero {
                padding: 80px 0 40px;
            }
            
            .page-hero h1 {
                font-size: 2rem;
            }
            
            .knowledge-grid {
                grid-template-columns: 1fr;
            }
            
            .featured-title {
                font-size: 1.6rem;
            }
            
            .comparison-column {
                padding: 1.2rem;
            }
        }
        
        @media (max-width: 480px) {
            .page-hero h1 {
                font-size: 1.8rem;
            }
            
            .section-title {
                font-size: 1.2rem;
            }
            
            .card-content, .featured-content {
                padding: 1.2rem;
            }
            
            .category-tag, .filter-btn {
                padding: 6px 15px;
                font-size: 0.9rem;
            }
        }