.scroll-top {
  position: fixed;
  z-index: calc(var(--z-header) - 1);
  right: max(20px, env(safe-area-inset-right));
  bottom: max(20px, env(safe-area-inset-bottom));
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-dark);
  color: var(--color-on-dark);
  box-shadow: 0 12px 28px -8px rgba(5, 20, 34, .55);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(.9);
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility 0s linear .25s, background var(--duration) var(--ease);
}

.scroll-top[hidden] {
  display: grid;
}

.scroll-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
}

.scroll-top:hover {
  background: var(--color-primary);
}

.scroll-top:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 3px;
  border-radius: 50%;
}

.scroll-top__ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.scroll-top__track {
  fill: none;
  stroke: rgba(255, 255, 255, .14);
  stroke-width: 3;
}

.scroll-top__progress {
  fill: none;
  stroke: var(--color-secondary);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  transition: stroke-dashoffset .1s linear;
}

.scroll-top__icon {
  width: 20px;
  height: 20px;
  transition: transform var(--duration) var(--ease);
}

.scroll-top:hover .scroll-top__icon {
  transform: translateY(-2px);
}

body.is-locked .scroll-top {
  opacity: 0;
  visibility: hidden;
}

@media (max-width: 639.98px) {
  .scroll-top {
    width: 46px;
    height: 46px;
    right: 16px;
    bottom: 16px;
  }
}

@media print {
  .scroll-top {
    display: none;
  }
}