.congresos-galeria {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 60px 0;
}

.galeria-item {
    overflow: hidden;
    border-radius: 12px;
}

.galeria-item img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: 0.4s ease;
    cursor: pointer;
}

.galeria-item:hover img {
    transform: scale(1.1);
}