.scroll-to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: #fff;
  color: #236bcc;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 14px #1f35401f;
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
  transition: opacity 0.2s, transform 0.2s;
  z-index: 15;
}
.scroll-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}
.scroll-to-top:hover {
  background: #f0f6fd;
}
@media (max-width: 700px) {
  .scroll-to-top {
    right: 14px;
    bottom: 14px;
  }
}