/* Paired simulations in the selected research grid. */
.envelope-movies {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
    margin: 0 0 2rem;
    align-items: start;
}
.envelope-movies video {
    display: block;
    width: 100%;
    height: auto;
}
#volatile-depletion .research-citation {
    text-align: center;
    font-size: 0.9em;
    margin-bottom: 0;
}