.site-back-to-top-controls {
  position: fixed;
  inset: 0;
  z-index: 9;
  pointer-events: none;
}

.site-back-to-top-controls[hidden] {
  display: none !important;
}

.site-back-to-top {
  position: absolute;
  top: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  width: 44px;
  min-width: 44px;
  height: 44px;
  min-height: 44px;
  margin: 0;
  padding: 0;
  transform: translateY(-50%);
  border: 1px solid var(--back-to-top-border, var(--line, #dfe5df));
  border-radius: 50%;
  background: var(--back-to-top-bg, var(--panel, #fff));
  box-shadow: 0 8px 24px rgba(15, 23, 42, .18);
  color: var(--back-to-top-fg, var(--accent, #1f4b3f));
  font: 700 20px/1 sans-serif;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  touch-action: manipulation;
  transition: opacity 180ms ease,
              visibility 0s linear 180ms,
              background-color 120ms ease,
              border-color 120ms ease;
}

.site-back-to-top--left {
  left: calc(14px + env(safe-area-inset-left, 0px));
}

.site-back-to-top--right {
  right: calc(14px + env(safe-area-inset-right, 0px));
}

.site-back-to-top-controls.is-visible .site-back-to-top {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0s;
}

@media (hover: hover) {
  .site-back-to-top:hover {
    border-color: var(--back-to-top-hover-border, var(--accent, #1f4b3f));
    background: var(
      --back-to-top-hover-bg,
      color-mix(in srgb, var(--accent, #1f4b3f) 10%, var(--panel, #fff))
    );
  }
}

.site-back-to-top:focus-visible {
  outline: 3px solid var(--back-to-top-focus, var(--accent, #1f4b3f));
  outline-offset: 2px;
}

@media (max-width: 900px), (pointer: coarse), (hover: none) {
  .site-back-to-top--left {
    display: none !important;
  }

  .site-back-to-top--right {
    top: auto;
    bottom: calc(84px + env(safe-area-inset-bottom, 0px));
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-back-to-top {
    transition: none;
  }
}

@media (forced-colors: active) {
  .site-back-to-top {
    border: 1px solid ButtonText;
    background: ButtonFace;
    box-shadow: none;
    color: ButtonText;
  }

  .site-back-to-top:focus-visible {
    outline: 3px solid Highlight;
  }
}

@media print {
  .site-back-to-top-controls {
    display: none !important;
  }
}