.scroll-to-top {
  position: fixed;
  right: clamp(16px, 2.286vw, 3.2rem);
  bottom: clamp(16px, 2.286vw, 3.2rem);
  z-index: 54;
  display: flex;
  align-items: center;
  justify-content: center;
  width: clamp(4.8rem, 4.571vw, 5.6rem);
  height: clamp(4.8rem, 4.571vw, 5.6rem);
  padding: 0;
  border: none;
  border-radius: 1.2rem;
  color: var(--cl-a);
  background: var(--bg-d);
  box-shadow: 0 1.5rem 1.2rem rgba(0, 0, 0, 0.08);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(1.6rem);
  pointer-events: none;
  transition:
    opacity 0.35s ease,
    visibility 0.35s ease,
    transform 0.35s ease,
    background-color 0.3s ease,
    box-shadow 0.3s ease;
}

.scroll-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-to-top .sprite,
.scroll-to-top svg {
  display: flex;
  width: 1.8rem;
  height: 1.8rem;
  color: var(--cl-a);
  transform: rotate(180deg);
}

.scroll-to-top:hover,
.scroll-to-top:focus-visible {
  background: var(--bg-h);
  box-shadow: 0 1.6rem 1.4rem rgba(3, 170, 149, 0.2);
  outline: none;
}

@media (max-width: 766.98px) {
  .scroll-to-top {
    right: 1.6rem;
    bottom: 1.6rem;
  }
}