:root {
  --ink: #122033;
  --muted: #5d6b7d;
  --paper: #f7f9fc;
  --white: #ffffff;
  --navy: #07111f;
  --navy-soft: #10243b;
  --teal: #0f9f93;
  --teal-bright: #5eead4;
  --amber: #f7b955;
  --line: #dbe3ec;
  --shadow: 0 24px 60px rgba(7, 17, 31, 0.12);
  --radius: 18px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--navy);
  background: var(--teal-bright);
  border-radius: 8px;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.narrow {
  max-width: 820px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  gap: 24px;
}

.hero {
  overflow: hidden;
  padding: 72px 0 76px;
  background:
    radial-gradient(circle at 78% 12%, rgba(94, 234, 212, 0.14), transparent 28%),
    linear-gradient(180deg, #fbfdff 0%, #f3f7fb 100%);
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-intro {
  max-width: 850px;
  margin-bottom: 44px;
  text-align: center;
}

.eyebrow,
.section-label {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 26px;
  color: var(--navy);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.project-name,
.project-subtitle {
  display: block;
}

.project-name {
  font-size: clamp(3.5rem, 8vw, 6.8rem);
  line-height: 0.94;
  letter-spacing: -0.075em;
}

.project-subtitle {
  max-width: 920px;
  margin: 20px auto 0;
  font-size: clamp(1.45rem, 3vw, 2.45rem);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

h2 {
  margin-bottom: 24px;
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.22rem;
}

.authors {
  margin-bottom: 3px;
  font-weight: 650;
}

.authors a {
  text-decoration-color: rgba(15, 159, 147, 0.4);
  text-underline-offset: 4px;
}

.affiliations {
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 0.92rem;
}

.equal-contribution,
.corresponding-author {
  display: block;
  margin-top: 6px;
  font-size: 0.86rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 17px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: var(--white);
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
  transition: 160ms ease;
}

.button:hover,
.button:focus-visible {
  border-color: var(--teal);
  transform: translateY(-2px);
}

.button-primary {
  border-color: var(--navy);
  color: var(--white);
  background: var(--navy);
}

.panorama {
  width: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--navy);
  border: 1px solid rgba(7, 17, 31, 0.1);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.panorama img {
  display: block;
  width: 100%;
  height: auto;
}

.hero-stats {
  width: min(100%, 820px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 30px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 30px rgba(7, 17, 31, 0.06);
}

.hero-stat {
  padding: 22px 24px;
  text-align: center;
}

.hero-stat + .hero-stat {
  border-left: 1px solid var(--line);
}

.hero-stat strong,
.hero-stat span {
  display: block;
}

.hero-stat strong {
  color: var(--navy);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.hero-stat span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pipeline-section {
  padding: 92px 0 110px;
  background: var(--white);
}

.pipeline-heading {
  margin-bottom: 34px;
  text-align: center;
}

.pipeline-heading h2 {
  margin-bottom: 0;
}

.stage-tabs {
  width: min(100%, 960px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 0 auto 24px;
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper);
}

.stage-tab {
  min-height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 10px 18px;
  border: 0;
  border-radius: 11px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-weight: 750;
  white-space: nowrap;
  cursor: pointer;
  transition:
    color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.stage-tab span {
  color: var(--teal);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.stage-tab:hover {
  color: var(--navy);
}

.stage-tab:focus-visible {
  outline: 3px solid rgba(15, 159, 147, 0.28);
  outline-offset: 2px;
}

.stage-tab.is-active {
  color: var(--white);
  background: var(--navy);
  box-shadow: 0 8px 20px rgba(7, 17, 31, 0.16);
}

.stage-tab.is-active span {
  color: var(--teal-bright);
}

.stage-panel {
  --stage-panel-height: clamp(400px, 44vw, 560px);
  height: var(--stage-panel-height);
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.stage-panel[hidden] {
  display: none;
}

.stage-panel img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: calc(var(--stage-panel-height) - 46px);
  object-fit: contain;
}

.stage-descriptions {
  width: min(100%, 960px);
  margin: 20px auto 0;
  padding: 18px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper);
}

.stage-description {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
  text-align: center;
}

.stage-description[hidden] {
  display: none;
}

.dataset-section {
  padding: 100px 0 116px;
  background: var(--paper);
}

.dataset-section > .container {
  width: min(calc(100% - 40px), 1380px);
}

.dataset-heading {
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}

.dataset-heading h2 {
  margin-bottom: 0;
}

.scenes-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px minmax(0, 1fr);
  grid-template-areas: "left chart right";
  align-items: center;
  gap: 20px;
}

.scene-stack {
  display: grid;
  gap: 18px;
}

.scene-stack-left {
  grid-area: left;
}

.scene-stack-right {
  grid-area: right;
}

.scene-card {
  --scene-color: var(--teal);
  position: relative;
  min-width: 0;
  overflow: hidden;
  margin: 0;
  border: 4px solid var(--scene-color);
  border-radius: 14px;
  background: var(--navy);
  box-shadow: 0 10px 28px rgba(7, 17, 31, 0.1);
  transition:
    filter 180ms ease,
    opacity 180ms ease,
    transform 180ms ease,
    box-shadow 180ms ease;
}

.scene-card:focus-visible {
  outline: 4px solid rgba(15, 159, 147, 0.28);
  outline-offset: 4px;
}

.scene-card.is-highlighted {
  z-index: 2;
  filter: saturate(1.18) contrast(1.04);
  transform: translateY(-4px) scale(1.025);
  box-shadow: 0 18px 38px color-mix(in srgb, var(--scene-color) 34%, transparent);
}

.scene-card.is-muted {
  opacity: 0.48;
  filter: grayscale(0.5);
}

.scene-public {
  --scene-color: #9eaddb;
}

.scene-commercial {
  --scene-color: #f09582;
}

.scene-workplace {
  --scene-color: #ad82ca;
}

.scene-industrial {
  --scene-color: #a9a9a9;
}

.scene-residential {
  --scene-color: #b9dce9;
}

.scene-transport {
  --scene-color: #79c0bd;
}

.scene-crop {
  aspect-ratio: 4.7 / 1;
  background-image: url("assets/pure_pano.png");
  background-repeat: no-repeat;
  background-size: 200% 500%;
}

.crop-public {
  background-position: 0 25%;
}

.crop-commercial {
  background-position: 0 0;
}

.crop-workplace {
  background-position: 100% 0;
}

.crop-industrial {
  background-position: 0 50%;
}

.crop-residential {
  background-position: 100% 25%;
}

.crop-transport {
  background-position: 100% 50%;
}

.scene-card figcaption {
  position: absolute;
  right: 10px;
  bottom: 8px;
  padding: 5px 9px;
  color: var(--white);
  background: rgba(7, 17, 31, 0.78);
  border-radius: 7px;
  font-size: 0.72rem;
  font-weight: 750;
  line-height: 1.2;
  backdrop-filter: blur(8px);
}

.scene-chart-panel {
  grid-area: chart;
  align-self: center;
  padding: 14px 12px 12px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--white);
  box-shadow: 0 18px 44px rgba(7, 17, 31, 0.09);
}

.scene-donut {
  display: block;
  width: min(100%, 228px);
  margin: 0 auto 6px;
  overflow: visible;
}

.donut-track,
.scene-segment {
  fill: none;
}

.donut-track {
  stroke: #e8edf3;
  stroke-width: 29;
}

.scene-segment {
  stroke-width: 28;
  cursor: pointer;
  transition:
    opacity 170ms ease,
    stroke-width 170ms ease,
    filter 170ms ease;
}

.scene-segment:focus-visible {
  outline: none;
  stroke-width: 35;
  filter: drop-shadow(0 0 7px rgba(7, 17, 31, 0.26));
}

.scene-segment.is-highlighted {
  stroke-width: 35;
  filter: drop-shadow(0 0 7px rgba(7, 17, 31, 0.26));
}

.scene-segment.is-muted {
  opacity: 0.25;
}

.segment-public {
  stroke: #9eaddb;
}

.segment-commercial {
  stroke: #f09582;
}

.segment-workplace {
  stroke: #ad82ca;
}

.segment-industrial {
  stroke: #a9a9a9;
}

.segment-residential {
  stroke: #b9dce9;
}

.segment-transport {
  stroke: #79c0bd;
}

.donut-total,
.donut-label {
  fill: var(--navy);
  font-family: inherit;
}

.donut-total {
  font-size: 1.72rem;
  font-weight: 850;
  letter-spacing: -0.04em;
}

.donut-label {
  fill: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scene-legend {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.scene-legend li {
  display: grid;
  grid-template-columns: 11px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.25;
  cursor: default;
  transition:
    opacity 170ms ease,
    color 170ms ease,
    background 170ms ease;
}

.scene-legend li:focus-visible {
  outline: 3px solid rgba(15, 159, 147, 0.25);
}

.scene-legend li.is-highlighted {
  color: var(--navy);
  background: var(--paper);
}

.scene-legend li.is-muted {
  opacity: 0.38;
}

.scene-legend strong {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.legend-swatch {
  width: 11px;
  height: 11px;
  border-radius: 3px;
}

.swatch-public {
  background: #9eaddb;
}

.swatch-commercial {
  background: #f09582;
}

.swatch-workplace {
  background: #ad82ca;
}

.swatch-industrial {
  background: #a9a9a9;
}

.swatch-residential {
  background: #b9dce9;
}

.swatch-transport {
  background: #79c0bd;
}

.bbox-section,
.trajectory-section {
  padding: 100px 0 116px;
  color: #dbe6f1;
  background:
    radial-gradient(circle at 15% 10%, rgba(94, 234, 212, 0.1), transparent 26%),
    var(--navy);
}

.bbox-heading,
.trajectory-heading {
  margin-bottom: 42px;
  text-align: center;
}

.bbox-heading .section-label,
.trajectory-heading .section-label {
  color: var(--teal-bright);
}

.bbox-heading h2,
.trajectory-heading h2 {
  margin-bottom: 0;
  color: var(--white);
}

.bbox-video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.bbox-video-card {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 20px;
  background: var(--navy-soft);
  box-shadow: 0 20px 46px rgba(0, 0, 0, 0.24);
  transition:
    border-color 180ms ease,
    transform 180ms ease,
    box-shadow 180ms ease;
}

.bbox-video-card:hover,
.bbox-video-card:focus-within {
  border-color: rgba(94, 234, 212, 0.5);
  transform: translateY(-4px);
  box-shadow: 0 26px 54px rgba(0, 0, 0, 0.3);
}

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #02070d;
}

.video-frame video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bbox-video-card > p {
  display: flex;
  align-items: center;
  min-height: 48px;
  margin: 0;
  padding: 12px 18px;
}

.bbox-video-card > p span {
  color: var(--teal-bright);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.trajectory-chart-card {
  margin-bottom: 34px;
  padding: 28px 30px 22px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 22px;
  background: rgba(12, 30, 50, 0.9);
  box-shadow: 0 24px 54px rgba(0, 0, 0, 0.26);
}

.trajectory-chart-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 12px;
}

.trajectory-chart-header h3,
.trajectory-chart-header p {
  margin: 0;
}

.trajectory-chart-header h3 {
  color: var(--white);
  font-size: clamp(1.25rem, 2.2vw, 1.7rem);
}

.trajectory-chart-header p {
  color: #a9bacb;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.trajectory-chart-header strong {
  color: var(--teal-bright);
  font-size: 1.2rem;
}

.trajectory-chart-scroll {
  overflow-x: auto;
  scrollbar-color: rgba(94, 234, 212, 0.55) rgba(255, 255, 255, 0.08);
}

.trajectory-chart {
  display: block;
  width: 100%;
  min-width: 760px;
  height: auto;
}

.chart-grid line {
  stroke: rgba(255, 255, 255, 0.1);
  stroke-width: 1;
}

.chart-axis {
  stroke: rgba(255, 255, 255, 0.46);
  stroke-width: 1.5;
}

.chart-axis-labels text,
.bar-label,
.bar-value,
.chart-title-x,
.chart-title-y {
  fill: #b8c7d6;
  font-family: inherit;
}

.chart-axis-labels text {
  font-size: 13px;
  text-anchor: end;
}

.trajectory-bin {
  outline: none;
}

.trajectory-bin rect {
  fill: var(--bar);
  opacity: 0.9;
  transition:
    opacity 160ms ease,
    filter 160ms ease;
}

.trajectory-bin:hover rect,
.trajectory-bin:focus rect {
  opacity: 1;
  filter: drop-shadow(0 0 9px rgba(94, 234, 212, 0.56));
}

.trajectory-bin:hover .bar-value,
.trajectory-bin:focus .bar-value {
  fill: var(--white);
}

.bar-value {
  font-size: 13px;
  font-weight: 700;
  text-anchor: middle;
}

.bar-label {
  font-size: 13px;
  font-weight: 600;
  text-anchor: middle;
}

.chart-title-x,
.chart-title-y {
  fill: var(--white);
  font-size: 16px;
  font-weight: 800;
  text-anchor: middle;
}

.trajectory-video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.trajectory-video-card {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 18px;
  background: var(--navy-soft);
  box-shadow: 0 20px 46px rgba(0, 0, 0, 0.24);
  transition:
    border-color 180ms ease,
    transform 180ms ease,
    box-shadow 180ms ease;
}

.trajectory-video-card:hover,
.trajectory-video-card:focus-within {
  border-color: rgba(94, 234, 212, 0.5);
  transform: translateY(-4px);
  box-shadow: 0 26px 54px rgba(0, 0, 0, 0.3);
}

.trajectory-video-card video {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: #02070d;
}

.trajectory-video-card > p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 15px 18px 17px;
  color: var(--white);
  font-size: 0.92rem;
  font-weight: 700;
}

.trajectory-video-card > p span {
  color: var(--teal-bright);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.section {
  padding: 92px 0;
}

.section-tinted {
  background: var(--paper);
}

.section-dark {
  color: #dbe6f1;
  background: var(--navy);
}

.section-dark h2,
.section-dark .metric-card strong {
  color: var(--white);
}

.section-dark .section-label {
  color: var(--teal-bright);
}

.lead {
  color: #34455a;
  font-size: 1.18rem;
  line-height: 1.9;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr minmax(260px, 420px);
  align-items: end;
  gap: 60px;
  margin-bottom: 42px;
}

.section-heading h2,
.section-heading p {
  margin-bottom: 0;
}

.section-heading > p {
  color: var(--muted);
}

.section-dark .section-heading > p {
  color: #9cafc3;
}

.pipeline {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 16px;
}

.pipeline-step {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.pipeline-step > span {
  display: block;
  margin-bottom: 42px;
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 800;
}

.pipeline-step p {
  margin-bottom: 0;
  color: var(--muted);
}

.pipeline-arrow {
  display: grid;
  place-items: center;
  color: var(--teal);
  font-size: 1.5rem;
}

.media-placeholder,
.figure-placeholder {
  position: relative;
  min-height: 430px;
  display: grid;
  place-items: center;
  color: #75869a;
  background:
    linear-gradient(135deg, rgba(15, 159, 147, 0.05), transparent 55%),
    var(--paper);
  border: 1px dashed #acbac9;
  border-radius: var(--radius);
}

.media-placeholder p,
.figure-placeholder p {
  margin: 0;
}

.play-icon {
  position: absolute;
  display: grid;
  width: 70px;
  height: 70px;
  place-items: center;
  padding-left: 4px;
  color: var(--white);
  background: var(--teal);
  border-radius: 50%;
  box-shadow: 0 12px 30px rgba(15, 159, 147, 0.28);
  transform: translateY(-28px);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 28px;
}

.metric-card {
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: var(--navy-soft);
}

.metric-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.metric-card span {
  color: #9cafc3;
}

.section-dark .figure-placeholder {
  min-height: 330px;
  color: #8da2b8;
  background: #0c1a2c;
  border-color: rgba(255, 255, 255, 0.2);
}

pre {
  overflow-x: auto;
  margin: 28px 0 0;
  padding: 24px;
  color: #dce9f6;
  background: var(--navy);
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.65;
}

.site-footer {
  color: #c7d4e1;
  background: #030a12;
}

.footer-inner {
  min-height: 110px;
}

.footer-inner p {
  margin: 0;
  font-size: 0.88rem;
}

.footer-inner p:first-child {
  color: var(--white);
  font-weight: 750;
}

@media (max-width: 900px) {
  .section-heading {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .pipeline {
    grid-template-columns: 1fr;
  }

  .pipeline-arrow {
    transform: rotate(90deg);
  }

  .scenes-showcase {
    grid-template-columns: 1fr;
    grid-template-areas:
      "chart"
      "left"
      "right";
  }

  .scene-chart-panel {
    width: min(100%, 440px);
    margin-inline: auto;
  }

  .scene-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .scene-crop {
    aspect-ratio: 3.2 / 1;
  }

  .trajectory-video-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 660px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .hero {
    padding: 52px 0 56px;
  }

  h1 {
    line-height: 1.05;
  }

  .project-name {
    font-size: clamp(3.2rem, 18vw, 5rem);
  }

  .project-subtitle {
    margin-top: 16px;
    font-size: clamp(1.3rem, 7vw, 2rem);
  }

  .hero-intro {
    margin-bottom: 32px;
  }

  .panorama {
    border-radius: 14px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .hero-stat + .hero-stat {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .pipeline-section {
    padding: 68px 0 76px;
  }

  .stage-tabs {
    grid-template-columns: 1fr;
    gap: 5px;
    padding: 5px;
  }

  .stage-tab {
    min-height: 50px;
    gap: 5px;
    padding: 8px 6px;
    font-size: 0.9rem;
  }

  .stage-tab span {
    display: none;
  }

  .stage-panel {
    --stage-panel-height: clamp(240px, 72vw, 360px);
    height: var(--stage-panel-height);
    padding: 8px;
    border-radius: 14px;
  }

  .stage-panel img {
    max-height: calc(var(--stage-panel-height) - 18px);
  }

  .stage-descriptions {
    margin-top: 14px;
    padding: 15px 16px;
    border-radius: 12px;
  }

  .stage-description {
    font-size: 0.94rem;
    line-height: 1.55;
  }

  .dataset-section {
    padding: 68px 0 76px;
  }

  .scene-stack {
    grid-template-columns: 1fr;
  }

  .scene-crop {
    aspect-ratio: 4.2 / 1;
  }

  .bbox-section,
  .trajectory-section {
    padding: 68px 0 76px;
  }

  .bbox-heading,
  .trajectory-heading {
    margin-bottom: 30px;
  }

  .bbox-video-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .trajectory-chart-card {
    padding: 22px 16px 16px;
    border-radius: 16px;
  }

  .trajectory-chart-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .trajectory-video-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .section {
    padding: 68px 0;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .media-placeholder {
    min-height: 280px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}