.mftb-floating-button {
  position: fixed;
  right: max(14px, env(safe-area-inset-right));
  bottom: max(72px, env(safe-area-inset-bottom));
  z-index: 2147483000;
  display: block;
  width: min(210px, 20vw);
  aspect-ratio: 1 / 1;
  background: transparent;
  text-decoration: none !important;
  isolation: isolate;
  transform: translate3d(0, 0, 0);
  transition: transform .22s ease, filter .22s ease;
  -webkit-tap-highlight-color: transparent;
}

.mftb-floating-button:hover,
.mftb-floating-button:focus-visible {
  transform: translate3d(0, -4px, 0) scale(1.035);
  filter: drop-shadow(0 12px 20px rgba(0, 0, 0, .42));
}

.mftb-floating-button:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 4px;
}

.mftb-floating-button__image {
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  border: 0;
  object-fit: contain;
}

@media (max-width: 782px) {
  .mftb-floating-button {
    right: max(8px, env(safe-area-inset-right));
    bottom: max(62px, env(safe-area-inset-bottom));
    width: min(148px, 40vw);
  }
}

@media (max-width: 420px) {
  .mftb-floating-button {
    width: min(136px, 42vw);
  }
}

@media (prefers-reduced-motion: reduce) {
  .mftb-floating-button {
    transition: none;
  }
}