.mk-whatsapp-float {
    position: fixed;
    right: calc(24px + env(safe-area-inset-right, 0px));
    bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #128c4c;
    color: #fff;
    text-decoration: none;
    font-size: 30px;
    line-height: 1;
    box-shadow: 0 4px 18px #0003;
    transition: background .2s;
}
.mk-whatsapp-float:hover { background: #0d703c; color: #fff; }
/* En el login se superpone con "Saber más": aparece recién al bajar al landing */
body:has([data-oculta-whatsapp]) .mk-whatsapp-float:not(.mk-whatsapp-float--visible) {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
}
body:has([data-oculta-whatsapp]) .mk-whatsapp-float { transition: background .2s, opacity .2s, visibility .2s; }
.mk-whatsapp-float:focus-visible { outline: 3px solid #1a1208; outline-offset: 4px; }
@media (max-width: 600px) {
    .mk-whatsapp-float {
        right: calc(16px + env(safe-area-inset-right, 0px));
        bottom: calc(16px + env(safe-area-inset-bottom, 0px));
        width: 56px;
        height: 56px;
        font-size: 28px;
    }
}