.azcb2-box {
    box-sizing: border-box;
    width: 100%;
    max-width: 32rem;
    padding: .25rem;
    margin-inline: auto;
}
.azcb2-pair {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .375rem;
}
.azcb2-pair[hidden] { display: none; }
.azcb2-pair .azcb2-call {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 0;
    min-height: 44px;
    padding: .375rem .25rem;
    border-radius: .5rem;
    background: #166534;
    color: #fff;
    font: 700 .875rem/1.25 system-ui, sans-serif;
    text-align: center;
    text-decoration: none;
}
.azcb2-pair .azcb2-call + .azcb2-call { background: #174788; }
.azcb2-pair .azcb2-call:focus-visible {
    outline: 2px solid #f4b622;
    outline-offset: 2px;
}
.azcb2-number { margin-top: .125rem; }
@media (max-width: 800px) {
    .azcb2-number { display: none; }
}