/* Scroll To Top — bkstt- */
.bkstt-wrap {
  position: fixed;
  z-index: 9990;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.bkstt-wrap.bkstt-visible {
  opacity: 1 !important;
  transform: translateY(0) !important;
  pointer-events: auto;
}
.bkstt-btn {
  cursor: pointer;
  font-family: inherit;
  position: relative;
  z-index: 1;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.bkstt-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25) !important;
}
.bkstt-btn:active {
  transform: translateY(0);
}
@keyframes bksttPulse {
  0%   { transform: scale(1); opacity: 0.6; }
  70%  { transform: scale(1.6); opacity: 0; }
  100% { transform: scale(1.6); opacity: 0; }
}
.bkstt-pulse {
  position: absolute;
  inset: -6px;
  animation: bksttPulse 1.8s ease-out infinite;
}