.mmc-sticky-atc {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #fff;
    border-top: 1px solid #E5EAF1;
    padding: 12px 16px;
    z-index: 999;
    box-shadow: 0 -4px 16px rgba(0,0,0,0.1);
}
.mmc-sticky-atc-btn {
    background: #EF233C;
    color: #fff;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    white-space: nowrap;
}
@media (min-width: 768px) {
    .mmc-sticky-atc { display: none !important; }
}