.km-stage-navigation {
  position: fixed;
  z-index: 990;
  top: 50%;
  right: max(16px, env(safe-area-inset-right));
  display: flex;
  width: 60px;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 6px;
  transform: translateY(-50%);
  border: 1px solid rgba(205, 164, 111, .78);
  border-radius: 18px;
  background: rgba(31, 30, 28, .94);
  box-shadow: 0 8px 28px rgba(0, 0, 0, .3);
  color: #fff;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.km-stage-navigation__heading {
  color: #d8ad78;
  font: 700 10px/1.2 Arial, sans-serif;
  letter-spacing: .12em;
}

.km-stage-navigation__position {
  color: #f2e6d8;
  font: 700 10px/1.2 Arial, sans-serif;
  white-space: nowrap;
}

.km-stage-navigation__link {
  position: relative;
  display: flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(212, 168, 110, .7);
  border-radius: 12px;
  color: #fff;
  text-decoration: none;
  transition: border-color .2s ease, background-color .2s ease, box-shadow .2s ease;
}

.km-stage-navigation__link:is(:hover, :focus-visible) {
  border-color: #fff;
  background: rgba(255, 255, 255, .15);
  box-shadow: 0 0 16px rgba(255, 255, 255, .55);
}

.km-stage-navigation__link:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.km-stage-navigation__arrow {
  font: 400 27px/1 Arial, sans-serif;
}

.km-stage-navigation__label {
  position: absolute;
  top: 50%;
  right: calc(100% + 13px);
  width: max-content;
  max-width: 230px;
  padding: 10px 14px;
  transform: translate(6px, -50%);
  border: 1px solid rgba(205, 164, 111, .78);
  border-radius: 10px;
  background: rgba(31, 30, 28, .97);
  box-shadow: 0 5px 20px rgba(0, 0, 0, .25);
  color: #fff;
  font: 600 14px/1.3 Arial, sans-serif;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
}

.km-stage-navigation__link:is(:hover, :focus-visible) .km-stage-navigation__label {
  transform: translate(0, -50%);
  opacity: 1;
  visibility: visible;
}

@media (max-width: 767px) {
  body.km-has-stage-navigation {
    padding-bottom: calc(82px + env(safe-area-inset-bottom));
  }

  .km-stage-navigation {
    top: auto;
    right: calc(20px + env(safe-area-inset-right));
    bottom: calc(16px + env(safe-area-inset-bottom));
    left: calc(20px + env(safe-area-inset-left));
    display: grid;
    width: auto;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 8px;
    padding: 6px;
    transform: none;
    border-radius: 14px;
  }

  body.home .km-stage-navigation {
    display: none;
  }

  body.home.km-has-stage-navigation {
    padding-bottom: 0;
  }

  .km-stage-navigation__heading {
    display: none;
  }

  .km-stage-navigation__position {
    grid-column: 2;
    grid-row: 1;
    padding: 0 3px;
  }

  .km-stage-navigation__link {
    width: 100%;
    min-width: 0;
    height: 46px;
    gap: 5px;
    padding: 0 8px;
  }

  .km-stage-navigation__link--prev {
    grid-column: 1;
    grid-row: 1;
  }

  .km-stage-navigation__link--next {
    grid-column: 3;
    grid-row: 1;
  }

  .km-stage-navigation--start {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .km-stage-navigation--start .km-stage-navigation__position {
    grid-column: 1;
  }

  .km-stage-navigation--start .km-stage-navigation__link--next {
    grid-column: 2;
    justify-self: end;
    max-width: 150px;
  }

  .km-stage-navigation--finish {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .km-stage-navigation--finish .km-stage-navigation__link--prev {
    grid-column: 1;
    max-width: 150px;
  }

  .km-stage-navigation--finish .km-stage-navigation__position {
    grid-column: 2;
  }

  .km-stage-navigation__arrow {
    flex: 0 0 auto;
    font-size: 20px;
  }

  .km-stage-navigation__label,
  .km-stage-navigation__link:is(:hover, :focus-visible) .km-stage-navigation__label {
    position: static;
    display: block;
    width: auto;
    min-width: 0;
    max-width: none;
    overflow: hidden;
    padding: 0;
    transform: none;
    border: 0;
    background: none;
    box-shadow: none;
    font-size: 12px;
    text-overflow: ellipsis;
    white-space: nowrap;
    opacity: 1;
    visibility: visible;
  }
}

@media (prefers-reduced-motion: reduce) {
  .km-stage-navigation__link,
  .km-stage-navigation__label {
    transition: none;
  }
}

@media (max-width: 767px) {
  .km-stage-navigation { display: none; }
  body.km-has-stage-navigation { padding-bottom: 0; }
}