:root {
  --page-deck-accent: #ff643b;
  --page-deck-ink: #061824;
  --page-deck-offset: 88px;
}

html.has-page-deck {
  scroll-behavior: smooth;
}

.has-page-deck main .page-deck-section {
  scroll-margin-top: var(--page-deck-offset);
}

.page-deck-nav {
  position: fixed;
  z-index: 950;
  top: 50%;
  right: max(12px, env(safe-area-inset-right));
  display: grid;
  justify-items: center;
  gap: 7px;
  padding: 10px 7px;
  color: #f8fbfd;
  background:
    linear-gradient(155deg, rgba(15, 35, 47, 0.92), rgba(5, 19, 29, 0.88));
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  box-shadow:
    0 18px 48px rgba(1, 11, 18, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(18px);
  transform: translateY(-50%);
}

.page-deck-track {
  display: grid;
  justify-items: center;
  gap: 2px;
  max-height: min(56vh, 560px);
  padding: 2px 0;
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-width: none;
}

.page-deck-track::-webkit-scrollbar {
  display: none;
}

.page-deck-anchor {
  position: relative;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  color: inherit;
  text-decoration: none;
  outline: none;
}

.page-deck-dot {
  display: block;
  width: 6px;
  height: 6px;
  background: rgba(255, 255, 255, 0.48);
  border: 1px solid rgba(255, 255, 255, 0.46);
  border-radius: 999px;
  transition:
    width 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.page-deck-anchor:hover .page-deck-dot,
.page-deck-anchor:focus-visible .page-deck-dot {
  background: #fff;
  border-color: #fff;
  transform: scale(1.2);
}

.page-deck-anchor[aria-current="location"] .page-deck-dot {
  width: 17px;
  background: var(--page-deck-accent);
  border-color: var(--page-deck-accent);
}

.page-deck-label {
  position: absolute;
  top: 50%;
  right: calc(100% + 13px);
  width: max-content;
  max-width: min(280px, 42vw);
  padding: 8px 11px;
  overflow: hidden;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.35;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
  background: rgba(6, 24, 36, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 9px;
  box-shadow: 0 10px 28px rgba(1, 11, 18, 0.24);
  opacity: 0;
  pointer-events: none;
  transform: translate(8px, -50%);
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.page-deck-label b {
  margin-right: 8px;
  color: var(--page-deck-accent);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.page-deck-anchor:hover .page-deck-label,
.page-deck-anchor:focus-visible .page-deck-label {
  opacity: 1;
  transform: translate(0, -50%);
}

.page-deck-button {
  display: grid;
  width: 28px;
  height: 28px;
  padding: 0;
  place-items: center;
  color: #fff;
  font: 700 14px/1 system-ui, sans-serif;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 50%;
  appearance: none;
  cursor: pointer;
  transition:
    color 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    transform 160ms ease;
}

.page-deck-button:hover,
.page-deck-button:focus-visible {
  color: var(--page-deck-ink);
  background: var(--page-deck-accent);
  border-color: var(--page-deck-accent);
  outline: none;
  transform: scale(1.06);
}

.page-deck-button:disabled {
  opacity: 0.28;
  cursor: default;
  transform: none;
}

.page-deck-status {
  display: flex;
  align-items: center;
  gap: 2px;
  color: rgba(255, 255, 255, 0.64);
  font: 700 9px/1 system-ui, sans-serif;
  letter-spacing: 0.04em;
}

.page-deck-status [data-page-deck-current] {
  color: #fff;
}

.page-deck-status i {
  font-style: normal;
  opacity: 0.4;
}

.page-deck-key {
  color: rgba(255, 255, 255, 0.46);
  font: 800 7px/1 system-ui, sans-serif;
  letter-spacing: 0.12em;
}

@media (min-width: 761px) {
  html.has-page-deck {
    scroll-snap-type: y proximity;
  }

  .has-page-deck main .page-deck-section {
    scroll-snap-align: start;
  }
}

@media (max-width: 760px) {
  .has-page-deck body {
    padding-bottom: calc(72px + env(safe-area-inset-bottom));
  }

  .page-deck-nav {
    top: auto;
    right: auto;
    bottom: max(10px, env(safe-area-inset-bottom));
    left: 50%;
    display: flex;
    width: min(92vw, 520px);
    gap: 6px;
    padding: 7px 9px;
    transform: translateX(-50%);
  }

  .page-deck-track {
    display: flex;
    flex: 1 1 auto;
    justify-content: flex-start;
    gap: 1px;
    max-width: none;
    max-height: none;
    padding: 0 3px;
    overflow-x: auto;
    overflow-y: hidden;
  }

  .page-deck-anchor {
    flex: 0 0 20px;
    width: 20px;
    height: 28px;
  }

  .page-deck-anchor[aria-current="location"] .page-deck-dot {
    width: 14px;
  }

  .page-deck-label,
  .page-deck-key {
    display: none;
  }

  .page-deck-button {
    flex: 0 0 30px;
    width: 30px;
    height: 30px;
  }

  .page-deck-previous span,
  .page-deck-next span {
    transform: rotate(-90deg);
  }

  .page-deck-status {
    flex: 0 0 auto;
    min-width: 38px;
    justify-content: center;
  }
}

@media (hover: none) and (pointer: coarse) {
  .page-deck-label {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html.has-page-deck {
    scroll-behavior: auto;
  }

  .page-deck-dot,
  .page-deck-label,
  .page-deck-button {
    transition: none;
  }
}

@media print {
  .page-deck-nav {
    display: none !important;
  }
}