:root {
  color-scheme: light;
  --transport-sky: #EEF3F7;
  --transport-mist: #E3EBF2;
  --transport-horizon: #D5E1EA;
  --transport-pale-blue: #C4D6E3;
  --transport-steel-blue: #7798B1;
  --transport-medium-blue: #426985;
  --transport-deep-blue: #173A59;
  --transport-near-black: #0E2A43;
  --transport-white: #E8EEF4;
  --transport-amber: #E3A331;
  --transport-shadow: 0 10px 30px rgba(14, 42, 67, 0.12);
  --transport-page-shadow: 0 30px 80px rgba(14, 42, 67, 0.08);
  --transport-line: rgba(66, 105, 133, 0.2);
  --transport-panel: rgba(255, 255, 255, 0.72);
  --transport-page-width: min(100% - 2rem, 1200px);
  --transport-gap: 12px;
  --transport-text: #173A59;
  --transport-text-soft: rgba(23, 58, 89, 0.7);
  --transport-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body.transport-demo-page {
  font-family: Inter, system-ui, sans-serif;
  color: var(--transport-text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.42), rgba(255, 255, 255, 0) 22rem),
    radial-gradient(circle at top left, rgba(196, 214, 227, 0.36), transparent 36%),
    linear-gradient(180deg, #F7FAFC 0%, #EEF3F7 100%);
}

.transport-demo {
  width: var(--transport-page-width);
  margin: 0 auto;
  padding: 2.4rem 0 4rem;
}

.transport-demo__hero,
.transport-demo__gallery-section,
.transport-demo__detail-band,
.transport-demo__notes {
  display: grid;
  gap: 1.25rem;
}

.transport-demo__hero {
  padding: 0.5rem 0 2rem;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  column-gap: 1.5rem;
}

.transport-demo__hero-copy {
  max-width: 62rem;
}

.transport-demo__eyebrow {
  margin: 0 0 0.45rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--transport-medium-blue);
}

.transport-demo h1,
.transport-demo h2,
.transport-demo h3,
.transport-demo p {
  margin: 0;
}

.transport-demo h1 {
  max-width: 18ch;
  font-size: clamp(2.4rem, 5vw, 4.25rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.transport-demo h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.transport-demo h3 {
  font-size: 0.98rem;
  line-height: 1.2;
}

.transport-demo__lede,
.transport-demo__hint,
.transport-demo__detail-band p,
.transport-demo__note-grid p,
.transport-card__description {
  color: var(--transport-text-soft);
  line-height: 1.55;
}

.transport-demo__controls {
  display: grid;
  gap: 0.55rem;
  justify-items: end;
}

.transport-demo__controls-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--transport-text-soft);
}

.transport-demo__segmented {
  display: inline-grid;
  grid-auto-flow: column;
  gap: 0;
  border: 1px solid var(--transport-line);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--transport-page-shadow);
}

.transport-demo__segment {
  appearance: none;
  border: 0;
  border-right: 1px solid var(--transport-line);
  background: transparent;
  color: var(--transport-medium-blue);
  padding: 0.7rem 1rem;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 220ms var(--transport-ease), color 220ms var(--transport-ease);
}

.transport-demo__segment:last-child {
  border-right: 0;
}

.transport-demo__segment[data-active="true"] {
  background: var(--transport-deep-blue);
  color: var(--transport-white);
}

.transport-demo__main {
  display: grid;
  gap: 2.4rem;
}

.transport-demo__section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.transport-banner-set {
  display: grid;
  gap: var(--transport-gap);
}

.transport-banner-set[data-layout="carousel"] {
  grid-auto-flow: column;
  grid-auto-columns: minmax(min(92vw, 70rem), 1fr);
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: rgba(66, 105, 133, 0.45) transparent;
}

.transport-banner-set[data-layout="carousel"]::-webkit-scrollbar {
  height: 10px;
}

.transport-banner-set[data-layout="carousel"]::-webkit-scrollbar-thumb {
  background: rgba(66, 105, 133, 0.4);
}

.transport-card {
  appearance: none;
  width: 100%;
  padding: 0;
  border: 0;
  margin: 0;
  display: grid;
  gap: 0.7rem;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
  scroll-snap-align: start;
}

div.transport-card {
  cursor: default;
}

.transport-card__media {
  position: relative;
  aspect-ratio: 4 / 1;
  overflow: hidden;
  background: linear-gradient(var(--transport-sky), #E4ECF3);
  box-shadow: none;
  transition:
    box-shadow 450ms var(--transport-ease),
    transform 450ms var(--transport-ease),
    opacity 450ms var(--transport-ease);
}

.transport-card__media::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 3px;
  background: transparent;
  transition: background-color 450ms var(--transport-ease);
}

.transport-card__svg {
  display: block;
  width: 100%;
  height: 100%;
  opacity: var(--scene-opacity, 1);
  filter: var(--scene-filter, none);
  transition:
    opacity 450ms var(--transport-ease),
    filter 450ms var(--transport-ease),
    transform 450ms var(--transport-ease);
  transform-origin: var(--scene-focus-x, 50%) 50%;
}

.transport-card[data-selected="true"] .transport-card__media {
  box-shadow: var(--transport-shadow);
}

.transport-card[data-selected="true"] .transport-card__media::after {
  background: var(--transport-amber);
}

.transport-card__caption {
  display: grid;
  gap: 0.2rem;
}

.transport-card__title {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--transport-text);
}

.transport-card__description {
  font-size: 0.92rem;
}

.transport-card[data-state="disabled"] {
  pointer-events: none;
}

.transport-card:focus-visible {
  outline: 2px solid #5AA3B2;
  outline-offset: 3px;
}

@media (hover: hover) and (pointer: fine) {
  .transport-card:hover .transport-card__media {
    transform: translateY(-2px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .transport-card,
  .transport-card__media,
  .transport-card__svg,
  .transport-demo__segment,
  .transport-demo__scene-chip {
    transition: none;
  }
}

.transport-demo__detail-band {
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 30rem);
  align-items: start;
  gap: 1.5rem;
  padding: 1.5rem 0 0;
  border-top: 1px solid rgba(66, 105, 133, 0.16);
}

.transport-demo__scene-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: flex-end;
}

.transport-demo__scene-chip {
  appearance: none;
  border: 1px solid rgba(66, 105, 133, 0.18);
  background: rgba(255, 255, 255, 0.78);
  color: var(--transport-medium-blue);
  padding: 0.65rem 0.9rem;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    background-color 220ms var(--transport-ease),
    color 220ms var(--transport-ease),
    border-color 220ms var(--transport-ease);
}

.transport-demo__scene-chip[data-active="true"] {
  background: rgba(227, 163, 49, 0.14);
  border-color: rgba(227, 163, 49, 0.6);
  color: var(--transport-deep-blue);
}

.transport-demo__note-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.transport-demo__note-grid article {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 1.05rem;
  border: 1px solid rgba(66, 105, 133, 0.14);
  background: var(--transport-panel);
  box-shadow: var(--transport-page-shadow);
}

@media (max-width: 960px) {
  .transport-card__media {
    aspect-ratio: 3.2 / 1;
  }

  .transport-card__svg {
    transform: scale(1.05);
  }

  .transport-demo__hero,
  .transport-demo__detail-band {
    grid-template-columns: 1fr;
  }

  .transport-demo__controls,
  .transport-demo__scene-list {
    justify-items: start;
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .transport-demo {
    width: min(100% - 1rem, 100%);
    padding-top: 1.35rem;
  }

  .transport-demo__hero,
  .transport-demo__section-header {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .transport-demo__section-header {
    display: grid;
  }

  .transport-banner-set[data-layout="auto"] {
    grid-auto-flow: column;
    grid-auto-columns: minmax(88vw, 1fr);
    overflow-x: auto;
    padding-bottom: 0.5rem;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .transport-banner-set[data-layout="auto"]::-webkit-scrollbar {
    display: none;
  }

  .transport-card__media {
    aspect-ratio: 2.2 / 1;
    min-height: 160px;
  }

  .transport-card__svg {
    transform: scale(1.12);
  }

  .transport-card__description,
  .transport-demo__hint {
    font-size: 0.9rem;
  }

  .transport-demo__note-grid {
    grid-template-columns: 1fr;
  }
}