/* Readable page excerpts move horizontally with the document's vertical scroll. */
#platform.platform-section {
  --platform-slide-width: min(1120px, calc(100vw - 48px));
  --platform-rail-gap: 28px;
  --platform-rail-inset: calc((100vw - var(--platform-slide-width)) / 2);
  --platform-preview-height: min(calc(100svh - 230px), calc(var(--platform-slide-width) * .753));
  --platform-stage-height: calc(100svh - 104px);
  width: 100%;
  max-width: none;
  padding-top: clamp(96px, 11vw, 158px);
  padding-bottom: 24px;
}

#platform .platform-intro {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 38px;
}

#platform .platform-intro .section-heading {
  flex: 1 1 auto;
  max-width: 980px;
  margin-bottom: 0;
}

#platform .platform-intro > a {
  flex: 0 0 auto;
  margin-bottom: 7px;
  font-size: 12px;
}

#platform .platform-tour,
#platform .platform-stage {
  position: relative;
  height: auto;
  min-width: 0;
}

#platform .platform-tour-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex: 0 0 auto;
  margin-bottom: 2px;
}

#platform .platform-tour-count {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

#platform .platform-tour-count strong {
  color: var(--soft);
  font-size: 20px;
  font-weight: 450;
  letter-spacing: -.045em;
}

#platform .platform-tour-controls {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex: 0 0 auto;
  min-height: 44px;
  margin-bottom: 6px;
  padding: 0;
}

#platform .platform-tour:not(.is-enhanced) .platform-tour-controls {
  display: none;
}

#platform .platform-tour-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

#platform .platform-tour-nav button {
  min-height: 44px;
  padding: 10px 15px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.35;
  white-space: nowrap;
  transform: none;
  transition: color 160ms ease, border-color 160ms ease;
}

#platform .platform-tour-nav button[aria-current="true"] {
  border-color: #9c8dff45;
  color: var(--soft);
}

#platform .platform-tour-nav button > span {
  margin-right: 7px;
  color: var(--muted);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

#platform .platform-tour-arrows {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 9px;
}

#platform .platform-tour-arrows button {
  display: inline-flex;
  flex: 0 0 44px;
  align-items: center;
  justify-content: center;
  width: 44px;
  min-width: 44px;
  height: 44px;
  min-height: 44px;
  padding: 0;
  border: 1px solid #ffffff28;
  border-radius: 50%;
  background: transparent;
  color: var(--soft);
  transform: none;
  transition: color 160ms ease, border-color 160ms ease;
}

#platform .platform-tour-arrows button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#platform .platform-tour-arrows button:disabled {
  opacity: .3;
  cursor: default;
}

#platform .platform-slide-copy {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 6px;
}

#platform .platform-slide-copy > div {
  min-width: 0;
}

#platform .platform-slide-copy .platform-slide-number {
  display: none;
}

#platform .platform-slide-copy h3 {
  color: var(--text);
  font-size: 20px;
  font-weight: 450;
  line-height: 1.3;
  letter-spacing: -.045em;
  overflow-wrap: break-word;
}

#platform .platform-slide-copy p {
  max-width: 850px;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

#platform .platform-original-link {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 9px;
  min-height: 38px;
  padding: 9px 12px;
  border: 1px solid #9c8dff40;
  border-radius: 8px;
  background: transparent;
  color: var(--soft);
  font-size: 11px;
  line-height: 1.4;
  transition: border-color 160ms ease, color 160ms ease;
}

#platform .platform-gallery-viewport {
  position: relative;
  width: 100%;
  height: var(--platform-preview-height);
  min-height: 220px;
  min-width: 0;
  overflow: hidden;
  scroll-snap-type: none;
  overscroll-behavior-x: contain;
  touch-action: pan-y pinch-zoom;
  scrollbar-width: thin;
  scrollbar-color: #9c8dff66 transparent;
  isolation: isolate;
}

#platform .platform-gallery-viewport::-webkit-scrollbar {
  height: 5px;
}

#platform .platform-gallery-viewport::-webkit-scrollbar-thumb {
  background: #9c8dff66;
  border-radius: 8px;
}

#platform .platform-gallery-viewport:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -3px;
}

#platform .platform-rail {
  display: flex;
  align-items: flex-start;
  gap: var(--platform-rail-gap);
  width: max-content;
  height: 100%;
  padding-inline: var(--platform-rail-inset);
}

#platform .platform-tour-tail {
  margin-bottom: 0;
}

#platform .platform-gallery-viewport.is-panning .platform-shot {
  cursor: grabbing;
}

#platform .platform-slide {
  flex: 0 0 var(--platform-slide-width);
  width: var(--platform-slide-width);
  height: 100%;
  min-width: 0;
  margin: 0;
  transform: none;
}

#platform .platform-shot {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  overflow: hidden;
  margin: 0;
  padding: 0;
  border: 1px solid #9c8dff30;
  border-radius: 14px;
  background: #14171d;
  box-shadow: none;
  text-align: left;
  cursor: zoom-in;
  transform: none;
  transition: border-color 160ms ease;
}

#platform .platform-shot > img {
  position: absolute;
  top: calc(var(--platform-slide-width) * -.214);
  left: -25%;
  display: block;
  width: 130%;
  max-width: none;
  height: auto;
  margin: 0;
  transform: none;
  user-select: none;
  -webkit-user-drag: none;
}

#platform [data-platform-slide="plan"] .platform-shot > img {
  top: calc(var(--platform-slide-width) * -.267);
  left: -32%;
  width: 133%;
}

#platform [data-platform-slide="lesson"] .platform-shot > img {
  top: calc(var(--platform-slide-width) * -.313);
}

#platform [data-platform-slide="services"] .platform-shot > img {
  top: calc(var(--platform-slide-width) * -.327);
  left: -10%;
  width: 100%;
  clip-path: inset(15.3% 0 0 20%);
}

#platform .platform-shot-hint {
  position: absolute;
  z-index: 1;
  right: 20px;
  bottom: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 34px;
  padding: 8px 12px;
  border: 1px solid #9c8dff40;
  border-radius: 999px;
  background: #111318eb;
  color: var(--soft);
  font-size: 11px;
  font-weight: 450;
  line-height: 1.3;
  pointer-events: none;
}

#platform .platform-shot-hint svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#platform .platform-shot:focus-visible,
#platform .platform-tour-nav button:focus-visible,
#platform .platform-tour-arrows button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

#platform .platform-tour-tail {
  flex: 0 0 auto;
  margin-top: 4px;
  font-size: 10px;
  line-height: 1.5;
}

#platform .platform-tour-progress {
  flex: 0 0 auto;
  height: 2px;
  margin-top: 6px;
  overflow: hidden;
  border-radius: 2px;
  background: #9c8dff25;
}

#platform .platform-tour-progress > span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--accent);
  transform: scaleX(var(--platform-progress, 0));
  transform-origin: left center;
}

#platform .platform-tour.is-enhanced:not(.is-static) {
  height: calc(var(--platform-stage-height) + var(--platform-scroll-distance, 4800px));
}

#platform .platform-tour.is-enhanced:not(.is-static) .platform-stage {
  position: sticky;
  top: 88px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: calc(100svh - 104px);
  padding-block: 2px;
}

#platform .platform-tour.is-enhanced:not(.is-static) .platform-gallery-viewport {
  flex: 1 1 auto;
  max-height: var(--platform-preview-height);
}

#platform .platform-tour:not(.is-enhanced) .platform-gallery-viewport,
#platform .platform-tour.is-static .platform-gallery-viewport {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--platform-rail-inset);
  touch-action: pan-x pan-y pinch-zoom;
}

#platform .platform-tour:not(.is-enhanced) .platform-rail,
#platform .platform-tour.is-static .platform-rail {
  transform: none !important;
}

#platform .platform-tour:not(.is-enhanced) .platform-slide,
#platform .platform-tour.is-static .platform-slide {
  scroll-snap-align: start;
}

#platform .platform-tour:not(.is-enhanced) .platform-tour-progress,
#platform .platform-tour.is-static .platform-tour-progress {
  display: none;
}

/* Full originals in the existing image viewer keep their native size. */
#dialog-media .dialog-platform {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  height: auto;
  max-height: none;
  margin: 0;
  user-select: none;
  -webkit-user-drag: none;
}

#dialog-media .dialog-platform.is-native {
  width: var(--platform-zoom-width, 1710px);
  min-width: var(--platform-zoom-width, 1710px);
  max-width: none;
  height: auto;
}

#dialog-media:has(.dialog-platform) {
  max-height: 72svh;
  overflow: auto;
  overscroll-behavior: contain;
  touch-action: pan-x pan-y pinch-zoom;
  scrollbar-width: auto;
  scrollbar-color: #8f81df #1b1e26;
}

#dialog-media:has(.dialog-platform):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -3px;
}

#dialog-media:has(.dialog-platform)::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

#dialog-media:has(.dialog-platform)::-webkit-scrollbar-track,
#dialog-media:has(.dialog-platform)::-webkit-scrollbar-corner {
  background: #1b1e26;
}

#dialog-media:has(.dialog-platform)::-webkit-scrollbar-thumb {
  border: 3px solid #1b1e26;
  border-radius: 12px;
  background: #6f638f;
}

@media (hover: hover) and (pointer: fine) {
  #platform .platform-tour-nav button:hover,
  #platform .platform-tour-arrows button:not(:disabled):hover,
  #platform .platform-original-link:hover,
  #platform .platform-shot:hover {
    border-color: #9c8dff80;
    color: var(--soft);
  }

  #dialog-media:has(.dialog-platform) {
    cursor: grab;
  }

  #dialog-media:has(.dialog-platform).is-panning {
    cursor: grabbing;
  }
}

@media (max-width: 1100px) {
  #platform .platform-intro {
    align-items: flex-start;
    flex-direction: column;
    gap: 24px;
  }

  #platform .platform-intro > a {
    margin-bottom: 0;
  }
}

@media (max-width: 800px) {
  #platform.platform-section {
    --platform-slide-width: calc(100vw - 32px);
    --platform-preview-height: min(calc(100svh - 230px), 643px);
    --platform-stage-height: calc(100svh - 88px);
    padding-top: 90px;
    padding-bottom: 12px;
  }

  #platform .platform-intro {
    margin-bottom: 30px;
  }

  #platform .platform-tour-controls {
    gap: 12px;
    margin-bottom: 6px;
  }

  #platform .platform-tour-nav {
    gap: 3px;
  }

  #platform .platform-tour-nav button {
    padding-inline: 10px;
  }

  #platform .platform-tour-nav button > span {
    display: none;
  }

  #platform .platform-slide-copy h3 {
    font-size: 20px;
  }

  #platform .platform-slide-copy p {
    font-size: 12px;
  }

  #platform .platform-shot > img {
    top: -190px;
    left: -220px;
    width: 1120px;
  }

  #platform [data-platform-slide="plan"] .platform-shot > img {
    top: -210px;
    left: -238px;
    width: 940px;
  }

  #platform [data-platform-slide="lesson"] .platform-shot > img {
    top: -330px;
    left: -410px;
  }

  #platform [data-platform-slide="services"] .platform-shot > img {
    top: -270px;
    left: -135px;
    width: 800px;
  }

  #platform .platform-tour.is-enhanced:not(.is-static) .platform-stage {
    top: 76px;
    height: calc(100svh - 88px);
  }

  #dialog-media:has(.dialog-platform) {
    max-height: 66svh;
  }
}

@media (max-width: 520px) {
  #platform.platform-section {
    padding-top: 78px;
  }

  #platform .platform-intro {
    gap: 23px;
    margin-bottom: 26px;
  }

  #platform .platform-intro > a {
    font-size: 11px;
  }

  #platform .platform-tour-meta .micro {
    font-size: 9px;
    letter-spacing: .13em;
  }

  #platform .platform-tour-count {
    font-size: 10px;
  }

  #platform .platform-tour-nav {
    justify-content: space-between;
    width: 100%;
    gap: 4px;
  }

  #platform .platform-tour-nav button {
    flex: 1 1 0;
    min-width: 0;
    padding-inline: 7px;
    font-size: 11px;
  }

  #platform .platform-tour-arrows {
    display: none;
  }

  #platform .platform-tour-tail {
    font-size: 10px;
  }

  #platform .platform-slide-copy {
    display: block;
    margin-bottom: 6px;
  }

  #platform .platform-original-link {
    margin-top: 6px;
    min-height: 34px;
    padding-block: 7px;
  }
}

@media (max-height: 560px) {
  #platform .platform-tour.is-enhanced {
    height: auto !important;
  }

  #platform .platform-tour.is-enhanced .platform-stage {
    position: relative !important;
    top: auto !important;
    height: auto !important;
    display: block !important;
  }

  #platform .platform-gallery-viewport {
    height: 300px;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: var(--platform-rail-inset);
    touch-action: pan-x pan-y pinch-zoom;
  }

  #platform .platform-rail {
    transform: none !important;
  }

  #platform .platform-slide {
    scroll-snap-align: start;
  }

  #platform .platform-tour-progress {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  #platform .platform-tour-nav button,
  #platform .platform-tour-arrows button,
  #platform .platform-original-link,
  #platform .platform-shot {
    transition: none;
  }

  #platform .platform-tour.is-enhanced {
    height: auto !important;
  }

  #platform .platform-tour.is-enhanced .platform-stage {
    position: relative !important;
    top: auto !important;
    height: auto !important;
    display: block !important;
  }

  #platform .platform-gallery-viewport {
    overflow-x: auto !important;
    overflow-y: hidden !important;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: var(--platform-rail-inset);
    touch-action: pan-x pan-y pinch-zoom;
  }

  #platform .platform-rail {
    transform: none !important;
  }

  #platform .platform-slide {
    scroll-snap-align: start;
  }

  #platform .platform-tour-progress {
    display: none;
  }
}