.cr-whatsapp {
    position: fixed;
    right: max(20px, env(safe-area-inset-right));
    bottom: max(20px, env(safe-area-inset-bottom));
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border: 0;
    border-radius: 50%;
    background: #25d366;
    color: #fff;
    box-shadow: 0 4px 16px #0003;
    text-decoration: none;
}
.cr-whatsapp:hover { background: #128c46; color: #fff; }
.cr-whatsapp:focus-visible { outline: 3px solid #0033ff; outline-offset: 4px; }
.cr-whatsapp svg { display: block; width: 32px; height: 32px; }
@media print { .cr-whatsapp { display: none; } }