/* 4 */
.di4 {
    margin: 0 auto;
    width: 1300px;
    height: 520px;
    margin-top: 150px;
}

.di4-1 {
    width: 1300px;
    height: 100px;
}
.di4-1 h3 {
    font-size: 45px;
    text-align: center;
}

       .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 30px;
            width: 1300px;
            margin-top: 60px;
        }
        
        .card {
            width: 288px;
            height: 380px;
            position: relative;
            cursor: pointer;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        .card:hover {
            transform: translateY(-20px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        }
        
        .card-image {
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        
        .card:hover .card-image {
            transform: scale(1.1);
        }
        
        .card-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.5) 50%, transparent 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 20px;
            opacity: 0;
            transition: opacity 0.5s ease;
        }
        
        .card:hover .card-overlay {
            opacity: 1;
        }
        
        .card-content {
            transform: translateY(30px);
            transition: transform 0.5s ease;
        }
        
        .card:hover .card-content {
            transform: translateY(0);
        }
        
        .card-title {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: white;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        
        .card-subtitle {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.85);
            margin-bottom: 15px;
            line-height: 1.5;
        }
        
        
        
        .footer {
            margin-top: 60px;
            text-a

        .footer {
            margin-top: 60px;
            text-align: center;
            font-size: 0.9rem;
            color: #7f8c8d;
        }
        
        .footer a {
            color: #3498db;
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .footer a:hover {
            color: #9b59b6;
            text-decoration: underline;
        }
        
        @media (max-width: 768px) {
            .container {
                flex-direction: column;
                align-items: center;
            }
            
            h1 {
                font-size: 2.2rem;
            }
        }
    }