.pic-whatsapp-float {
  position: fixed; right: 24px; bottom: calc(24px + env(safe-area-inset-bottom,0px)); z-index: 90;
  display: flex; align-items: center; justify-content: center; width: 66px; height: 66px;
  border-radius: 50%; background: #25d366; color: #fff; border: 2px solid #fff;
  box-shadow: 0 4px 18px rgba(0,0,0,.2); text-decoration: none;
  transition: background-color .2s ease,box-shadow .2s ease;
}
.pic-whatsapp-float:hover { background: #20bd5a; color: #fff; box-shadow: 0 5px 20px rgba(0,0,0,.24); }
.pic-whatsapp-float:focus-visible { outline: 3px solid #e8a33d; outline-offset: 4px; }
.pic-whatsapp-float svg { display: block; flex: 0 0 auto; width: 48px; height: 48px; }
.pic-whatsapp-label {
  position: absolute; right: calc(100% + 10px); padding: 6px 10px; border-radius: 4px;
  color: #fff; background: #174b5c; white-space: nowrap; font: 500 13px/1.4 Arial,sans-serif;
  opacity: 0; visibility: hidden; pointer-events: none;
}
.pic-whatsapp-float:hover .pic-whatsapp-label,
.pic-whatsapp-float:focus-visible .pic-whatsapp-label { opacity: 1; visibility: visible; }
@media(max-width:600px) {
  .pic-whatsapp-float { width: 60px; height: 60px; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom,0px)); }
  .pic-whatsapp-float svg { width: 44px; height: 44px; }
}
@media(prefers-reduced-motion:reduce) { .pic-whatsapp-float { transition: none; } }