.portada {
    background: #fff;
    padding: 2rem;
    margin: 2rem 0;
    border-radius: 12px;
    display: flex;
    gap: 2rem;
    align-items: center;
    border-left: 5px solid #0b3d91;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

/* Responsive */
@media (max-width: 600px) {
    .portada {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .imagen-portada {
        width: 100%;
        max-width: 250px;
    }
}