.belykweb-float-btn {
  position: fixed; right: 18px; bottom: 18px; width: 46px; height: 46px; border-radius: 50%;
  background: #fff; border: none; box-shadow: 0 8px 20px rgba(0,0,0,0.22);
  display: flex; align-items: center; justify-content: center; z-index: 99998;
  opacity: 0; transform: translateY(16px) scale(0.85); pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease; cursor: pointer; padding: 0;
}
.belykweb-float-btn.show { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.belykweb-float-btn .float-icon { position: absolute; display: flex; align-items: center; justify-content: center; transition: opacity 0.25s ease, transform 0.25s ease; }
.belykweb-float-btn .float-icon-wa { opacity: 1; transform: scale(1); }
.belykweb-float-btn .float-icon-top { opacity: 0; transform: scale(0.6); }
.belykweb-float-btn[data-mode="top"] .float-icon-wa { opacity: 0; transform: scale(0.6); }
.belykweb-float-btn[data-mode="top"] .float-icon-top { opacity: 1; transform: scale(1); }
.belykweb-float-btn[data-mode="wa"].show { animation: waPulseSmall 2.4s ease-in-out infinite; }
@keyframes waPulseSmall { 0%, 100% { box-shadow: 0 8px 20px rgba(37,211,102,0.25); } 50% { box-shadow: 0 8px 26px rgba(37,211,102,0.55); } }
@media (max-width: 576px) { .belykweb-float-btn { right: 14px; bottom: 14px; width: 42px; height: 42px; } }