.sb-back-to-top {
  position: fixed;
  right: 30px;
  bottom: 30px;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background-color: var(--color_darkpink);
  color: #fff;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition:
    opacity 0.5s ease,
    transform 0.5s ease,
    visibility 0.5s;
  -webkit-tap-highlight-color: transparent;
}
.sb-back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.sb-back-to-top svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.sb-back-to-top:focus-visible {
  outline: 2px solid var(--color_pink);
  outline-offset: 3px;
}
@media (max-width: 767px) {
  .sb-back-to-top {
    right: 20px;
    bottom: 20px;
  }
  .sb-back-to-top svg {
    width: 19px;
    height: 19px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .sb-back-to-top {
    transition: none;
    transform: none;
  }
}