#p19.impl-hub {
  --impl-surface: #f5f5f7;
  --impl-ink: #101012;
  --impl-muted: #77777d;
  --impl-soft: rgba(16, 16, 18, .08);
  --impl-pad: clamp(24px, 3.3vw, 68px);
  --impl-label: clamp(10px, .72vw, 12px);
  --impl-copy: clamp(12px, .9vw, 15px);
  --impl-card-w: min(44vw, 720px);
  --impl-motion: 290ms cubic-bezier(.22, .72, .24, 1);
  min-height: 100svh;
  padding: 0;
  overflow: clip;
  background: var(--impl-surface);
  color: var(--impl-ink);
  isolation: isolate;
}

#p19.impl-hub .page-no { display: none; }

.impl-hub__header {
  position: absolute;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  min-height: clamp(82px, 9.5vh, 112px);
  padding: clamp(22px, 3vh, 36px) var(--impl-pad) 14px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  background: var(--impl-surface);
}

.impl-hub__identity,
.impl-hub__status {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: var(--impl-label);
  line-height: 1.15;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.impl-hub__identity strong { font-weight: 650; }
.impl-hub__identity span,
.impl-hub__page-state { color: var(--impl-muted); }
.impl-hub__status { justify-self: end; text-align: left; min-width: 106px; }

.impl-hub__directory-toggle {
  justify-self: center;
  min-width: 92px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--impl-ink);
  cursor: pointer;
  display: grid;
  justify-items: center;
  gap: 7px;
  font-size: clamp(12px, .88vw, 15px);
  font-weight: 600;
  letter-spacing: .015em;
  transition: transform 180ms ease, opacity 180ms ease;
}

.impl-hub__directory-toggle:hover,
.impl-hub__directory-toggle:focus-visible { transform: scale(1.035); }
.impl-hub__directory-toggle:focus-visible,
.impl-directory__item:focus-visible,
.impl-card:focus-visible { outline: 2px solid currentColor; outline-offset: 5px; }

.impl-hub__stack {
  width: 30px;
  height: 14px;
  display: grid;
  align-content: space-between;
}

.impl-hub__stack b {
  display: block;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transform-origin: center;
  transition: transform 220ms ease, opacity 220ms ease;
}

.is-directory-open .impl-hub__stack b:first-child { transform: translateY(6px) rotate(35deg); }
.is-directory-open .impl-hub__stack b:nth-child(2) { opacity: 0; }
.is-directory-open .impl-hub__stack b:last-child { transform: translateY(-6px) rotate(-35deg); }

.impl-directory {
  position: absolute;
  z-index: 18;
  top: clamp(82px, 9.5vh, 112px);
  left: 0;
  width: 100%;
  padding: 8px var(--impl-pad) clamp(24px, 3vh, 42px);
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 44px);
  background: var(--impl-surface);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-14px);
  pointer-events: none;
  transition: opacity 220ms ease, transform 260ms cubic-bezier(.22, .72, .24, 1), visibility 220ms;
}

.is-directory-open .impl-directory {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.impl-directory__item {
  min-width: 0;
  color: var(--impl-ink);
  text-decoration: none;
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 8px;
  align-items: start;
  transition: transform 180ms ease, opacity 180ms ease;
}

.impl-directory__item:hover,
.impl-directory__item:focus-visible { transform: translateY(-2px) scale(1.012); }
.impl-directory__no { font-size: var(--impl-label); color: var(--impl-muted); padding-top: 3px; }
.impl-directory__copy { min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.impl-directory__copy strong { font-size: clamp(16px, 1.25vw, 23px); line-height: 1.08; font-weight: 480; }
.impl-directory__copy small { font-size: var(--impl-copy); line-height: 1.42; color: var(--impl-muted); }
.impl-directory__copy em { margin-top: 2px; font-size: 9px; font-style: normal; letter-spacing: .12em; text-transform: uppercase; color: var(--impl-muted); }

.impl-stage {
  position: absolute;
  z-index: 2;
  inset: clamp(90px, 10vh, 120px) 0 0;
  perspective: 1500px;
  transform-style: preserve-3d;
  touch-action: pan-y;
}

.impl-stage__axis {
  position: absolute;
  left: 50%;
  top: 52%;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.impl-card {
  position: absolute;
  left: 50%;
  top: 52%;
  width: var(--impl-card-w);
  aspect-ratio: 4 / 3;
  margin: 0;
  padding: 0;
  border: 0;
  background: #ebecef;
  color: var(--impl-ink);
  cursor: pointer;
  overflow: hidden;
  display: grid;
  grid-template-rows: 1fr auto;
  transform-origin: 50% 50%;
  backface-visibility: hidden;
  will-change: transform, opacity;
  transition: transform var(--impl-motion), opacity var(--impl-motion), filter 110ms ease;
}

.impl-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, .14);
  opacity: 0;
  pointer-events: none;
}

.impl-card[data-depth='main'] {
  z-index: 6;
  opacity: 1;
  transform: translate3d(-50%, -50%, 0) scale(1);
}

.impl-card[data-depth='back-1'] {
  z-index: 5;
  opacity: .68;
  transform: translate3d(-50%, calc(-50% - 38px), -110px) scale(.9);
}

.impl-card[data-depth='back-2'] {
  z-index: 4;
  opacity: .36;
  transform: translate3d(-50%, calc(-50% - 68px), -210px) scale(.82);
}

.impl-card[data-depth='hidden'] {
  z-index: 1;
  opacity: 0;
  pointer-events: none;
  transform: translate3d(-50%, calc(-50% - 90px), -300px) scale(.76);
}

.impl-card.is-leaving {
  z-index: 8;
  opacity: 0;
  pointer-events: none;
  transform: translate3d(-50%, calc(-50% + 72px), 90px) scale(1.055);
}

.impl-card.is-pulsing::after { animation: impl-card-pulse 140ms ease-out; }

@keyframes impl-card-pulse {
  0%, 100% { opacity: 0; }
  45% { opacity: 1; }
}

.impl-card__media {
  min-height: 0;
  overflow: hidden;
  background: #e8e7e4;
  display: grid;
  place-items: center;
}

.impl-card__media img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.impl-card--rotate-ccw .impl-card__media img {
  width: auto;
  height: 126%;
  object-fit: contain;
  transform: rotate(-90deg);
}

.impl-card--rotate-cw-flip .impl-card__media img {
  width: auto;
  height: 118%;
  object-fit: contain;
  transform: rotate(90deg) scaleX(-1);
}

.impl-card__caption {
  min-height: 42px;
  padding: 9px 12px 10px;
  background: var(--impl-ink);
  color: var(--impl-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  font-size: var(--impl-label);
  letter-spacing: .055em;
  text-transform: uppercase;
}

.impl-card__caption strong { font-size: inherit; font-weight: 500; white-space: nowrap; }

.impl-stage__hint,
.impl-hub__page-state {
  position: absolute;
  z-index: 10;
  margin: 0;
  font-size: 9px;
  line-height: 1;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--impl-muted);
}

.impl-stage__hint { right: var(--impl-pad); bottom: clamp(24px, 4vh, 48px); }
.impl-hub__page-state { left: var(--impl-pad); bottom: clamp(24px, 4vh, 48px); }
.is-directory-open .impl-stage { opacity: .24; transform: translateY(24px); transition: opacity 220ms ease, transform 260ms ease; }

@media (max-width: 900px) {
  #p19.impl-hub { --impl-card-w: min(76vw, 620px); }
  .impl-hub__header { grid-template-columns: 1fr auto; }
  .impl-hub__directory-toggle { grid-column: 2; grid-row: 1; }
  .impl-hub__status { display: none; }
  .impl-directory { grid-template-columns: 1fr 1fr; max-height: calc(100svh - 80px); overflow-y: auto; }
  .impl-card[data-depth='back-1'] { transform: translate3d(-50%, calc(-50% - 28px), -80px) scale(.91); }
  .impl-card[data-depth='back-2'] { transform: translate3d(-50%, calc(-50% - 50px), -150px) scale(.84); }
}

@media (max-width: 620px) {
  #p19.impl-hub {
    --impl-pad: 20px;
    --impl-card-w: min(86vw, 430px);
    min-height: max(100svh, 680px);
  }
  .impl-hub__identity strong { max-width: 190px; }
  .impl-hub__identity span { font-size: 9px; }
  .impl-hub__directory-toggle { min-width: 72px; }
  .impl-directory { grid-template-columns: 1fr; gap: 18px; padding-top: 14px; }
  .impl-directory__copy strong { font-size: 18px; }
  .impl-stage { top: 94px; }
  .impl-card { top: 50%; }
  .impl-card__caption { min-height: 38px; padding: 8px 10px; }
  .impl-card__caption strong { max-width: 44%; overflow: hidden; text-overflow: ellipsis; }
  .impl-stage__hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .impl-hub__directory-toggle,
  .impl-directory,
  .impl-directory__item,
  .impl-stage,
  .impl-card { transition-duration: 180ms !important; }
  .impl-card { transform-style: flat; }
  .impl-card[data-depth='main'] { transform: translate(-50%, -50%); }
  .impl-card[data-depth='back-1'],
  .impl-card[data-depth='back-2'],
  .impl-card[data-depth='hidden'] { opacity: 0; transform: translate(-50%, -50%); pointer-events: none; }
  .impl-card::after { display: none; }
}