.page-header {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            padding: 3rem 0;
            margin-bottom: 3rem;
            border-radius: 0 0 50px 50px;
        }
        
        .test-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        
        .test-card {
            background: white;
            border-radius: 20px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
            border: 1px solid rgba(0,0,0,0.03);
            cursor: pointer;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .test-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(102, 126, 234, 0.15);
        }
        
        .test-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .test-card:hover::before {
            opacity: 1;
        }
        
        .test-badge {
            display: inline-block;
            padding: 0.4rem 1rem;
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 1rem;
            align-self: flex-start;
        }
        
        .test-types {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1.2rem;
        }
        
        .type-a, .type-b {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1;
        }
        
        .type-a {
            color: #667eea;
        }
        
        .type-b {
            color: #764ba2;
        }
        
        .vs-icon {
            font-size: 1.2rem;
            color: #cbd5e0;
            font-weight: 600;
        }
        
        .test-description {
            font-size: 0.9rem;
            color: #4a5568;
            line-height: 1.6;
            margin-bottom: 1.5rem;
            flex-grow: 1;
        }
        
        .test-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
            color: #718096;
            font-size: 0.85rem;
        }
        
        .test-meta i {
            margin-right: 0.3rem;
        }
        
        .test-link {
            display: inline-block;
            padding: 0.6rem 1rem;
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            align-self: flex-start;
            width: 100%;
            text-align: center;
        }
        
        .test-link:hover {
            transform: translateY(-2px);
            color: white;
            text-decoration: none;
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
        }
        
        .test-link i {
            font-size: 0.8rem;
            margin-left: 0.5rem;
        }
        
        .category-filter {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.8rem;
            margin: 2rem 0;
        }
        
        .filter-btn {
            padding: 0.6rem 1.5rem;
            border: none;
            border-radius: 50px;
            background: white;
            color: #4a5568;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        
        .filter-btn.active {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
        }
        
        .filter-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(102, 126, 234, 0.2);
        }
        
        .stats-summary {
            background: white;
            border-radius: 20px;
            padding: 1.5rem;
            margin: 2rem 0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-around;
            align-items: center;
        }
        
        .stat-item {
            text-align: center;
            padding: 0.5rem 1rem;
        }
        
        .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: #667eea;
            line-height: 1;
        }
        
        .stat-label {
            font-size: 0.9rem;
            color: #718096;
        }
        
        .search-box {
            max-width: 400px;
            margin: 0 auto 2rem;
        }
        
        .search-box input {
            width: 100%;
            padding: 0.8rem 1.5rem;
            border: 2px solid #e2e8f0;
            border-radius: 50px;
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        
        .search-box input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }
        
        .search-box i {
            position: absolute;
            right: 1.5rem;
            top: 50%;
            transform: translateY(-50%);
            color: #a0aec0;
        }
        
        .search-wrapper {
            position: relative;
        }
        
        @media (max-width: 768px) {
            .test-grid {
                grid-template-columns: 1fr;
            }
            
            .category-filter {
                flex-direction: column;
                align-items: center;
            }
            
            .filter-btn {
                width: 100%;
                max-width: 300px;
            }
            
            .stats-summary {
                flex-direction: column;
                gap: 1rem;
            }
        }