.card-std {
    display: flex;
    flex-direction: column; /* heading on top, then two-column row */
    gap: 1.5rem;
    background-color: #ffffff;
    border-radius: 0.6rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

    .card-std p, ul, li .card-std strong {
        font-size: 1.8rem;
        line-height: 1.6;
        text-align: justify;
        margin: 0 0 1rem 0;
        color: black;
    }

    .card-std img {
        width: 50%;
        border-radius: 0.4rem;
        box-shadow: 0 2px 6px rgba(0,0,0,0.25);
        margin-left: 1rem;
    }

1.card-std-up {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
}

@media screen and (max-width: 1000px) {
    .card-std-up {
        grid-template-columns: repeat(2, 1fr);
    }
    .card-std p,
    .card-std ul li {
        font-size: 22px;
        line-height: 1.6;
    }
}