:root {
  --ink: #0b1424;
  --ink-soft: #526173;
  --paper: #eff0ec;
  --surface: #f8f8f5;
  --line: rgba(14, 31, 50, 0.12);
  --cyan: #55ddd1;
  --cyan-dark: #087d78;
  --blue: #4b75e6;
  --purple: #7655d8;
  --gold: #d59c26;
  --radius: 6px;
  --shadow: 0 18px 54px rgba(13, 27, 48, 0.09);
  --page: min(1180px, calc(100vw - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

button,
a {
  font: inherit;
}

button {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.sr-only,
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  z-index: 1000;
  width: auto;
  height: auto;
  clip: auto;
  top: 12px;
  left: 12px;
  margin: 0;
  padding: 10px 14px;
  border-radius: 10px;
  background: #fff;
}

.page-shell {
  width: var(--page);
  margin-inline: auto;
}

.section {
  padding: 124px 0;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--cyan-dark);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 46px;
}

.section-heading h2,
.annotation-copy h2,
.statistics-copy h2,
.resource-heading h2,
.method-header h2 {
  margin: 0;
  font-size: clamp(2rem, 4.2vw, 4rem);
  font-weight: 720;
  line-height: 1.04;
  letter-spacing: -0.055em;
}

.section-heading > p:last-child,
.annotation-copy > p,
.statistics-copy > p,
.resource-heading > p,
.method-header > div:first-child > p:last-child {
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 72px;
  align-items: end;
  max-width: none;
}

.split-heading > p {
  margin: 0 0 8px;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms ease, transform 700ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Navigation */
.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  color: #fff;
  transition: background 250ms ease, color 250ms ease, box-shadow 250ms ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 1px 0 rgba(13, 27, 48, 0.09);
  backdrop-filter: blur(18px);
}

.nav-shell {
  width: var(--page);
  min-height: 76px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 1.05rem;
  font-weight: 780;
  letter-spacing: -0.025em;
}

.brand-mark {
  position: relative;
  width: 30px;
  height: 30px;
  display: inline-block;
  border: 1.8px solid currentColor;
  border-radius: 50%;
  overflow: hidden;
}

.brand-mark span {
  position: absolute;
  inset: 4px 10px;
  border: 1px solid currentColor;
  border-radius: 50%;
}

.brand-mark span:nth-child(2) {
  inset: 13px 2px auto;
  height: 1px;
  border: 0;
  border-top: 1px solid currentColor;
  border-radius: 0;
}

.brand-mark span:nth-child(3) {
  inset: 6px 2px auto;
  height: 15px;
  border-left: 0;
  border-right: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 0.88rem;
  font-weight: 650;
}

.site-nav a {
  position: relative;
  opacity: 0.86;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -7px;
  height: 2px;
  background: var(--cyan);
  transition: right 200ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  right: 0;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  opacity: 1;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  background: transparent;
}

.menu-toggle span:not(.sr-only) {
  display: block;
  width: 22px;
  height: 2px;
  margin: 6px auto;
  background: currentColor;
  transition: transform 200ms ease;
}

/* Hero */
.hero {
  position: relative;
  min-height: 850px;
  height: min(980px, 100vh);
  overflow: hidden;
  color: #fff;
  background: #07101d;
}

.hero-image,
.hero-video,
.hero-shade,
.longitude-grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image,
.hero-video {
  object-fit: cover;
  object-position: center;
  filter: saturate(0.9) contrast(1.04);
  transform: scale(1.015);
}

.hero-video {
  pointer-events: none;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(2, 8, 16, 0.9) 0%, rgba(2, 8, 16, 0.58) 43%, rgba(2, 8, 16, 0.05) 78%),
    linear-gradient(0deg, rgba(2, 8, 16, 0.96) 0%, rgba(2, 8, 16, 0.08) 48%, rgba(2, 8, 16, 0.3) 100%);
}

.longitude-grid {
  opacity: 0.13;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.55) 1px, transparent 1px);
  background-size: 12.5% 25%;
  mask-image: linear-gradient(to bottom, transparent 8%, #000 40%, transparent 87%);
}

.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  padding-top: 140px;
  padding-bottom: 210px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 80px;
}

.hero-copy {
  max-width: 760px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  font-size: 0.75rem;
  font-weight: 760;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(85, 221, 209, 0.17);
}

.hero h1 {
  margin: 0;
  font-size: clamp(5rem, 11.2vw, 10.6rem);
  font-weight: 740;
  line-height: 0.84;
  letter-spacing: -0.095em;
  text-shadow: 0 16px 54px rgba(0, 0, 0, 0.24);
}

.hero-subtitle {
  margin: 30px 0 0;
  font-size: clamp(1.55rem, 3.2vw, 3.05rem);
  font-weight: 560;
  line-height: 1.12;
  letter-spacing: -0.045em;
}

.hero-meta {
  max-width: 660px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.02rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 21px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 0.9rem;
  font-weight: 740;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #07111f;
  background: var(--cyan);
}

.button-glass {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
}

.button-glass:hover {
  background: rgba(255, 255, 255, 0.15);
}

.hero-ai {
  position: relative;
  flex: 0 0 400px;
  width: 400px;
  height: 400px;
  display: grid;
  place-items: center;
  isolation: isolate;
}

.hero-ai::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 8%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(85, 221, 209, 0.18), rgba(75, 117, 230, 0.06) 45%, transparent 70%);
  filter: blur(14px);
}

.neural-sphere {
  position: absolute;
  inset: -8%;
  width: 116%;
  height: 116%;
  opacity: 0.94;
}

.ai-reticle {
  position: absolute;
  inset: 38px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  box-shadow: 0 0 0 18px rgba(85, 221, 209, 0.025), inset 0 0 50px rgba(85, 221, 209, 0.035);
}

.ai-reticle::before,
.ai-reticle::after {
  content: "";
  position: absolute;
  inset: 50% -13px auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(85, 221, 209, 0.55), transparent);
}

.ai-reticle::after {
  inset: -13px 50% -13px auto;
  width: 1px;
  height: auto;
  background: linear-gradient(transparent, rgba(85, 221, 209, 0.55), transparent);
}

.ai-reticle span {
  position: absolute;
  inset: 23%;
  border: 1px dashed rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  animation: reticle-spin 24s linear infinite;
}

.ai-reticle span:nth-child(2) {
  inset: 8% 30%;
  border-color: rgba(85, 221, 209, 0.24);
  animation-direction: reverse;
  animation-duration: 16s;
}

.ai-core {
  position: relative;
  width: 104px;
  height: 104px;
  display: grid;
  align-content: center;
  place-items: center;
  border: 1px solid rgba(85, 221, 209, 0.72);
  border-radius: 50%;
  color: var(--cyan);
  background: rgba(5, 15, 28, 0.46);
  box-shadow: inset 0 0 34px rgba(85, 221, 209, 0.14), 0 0 50px rgba(85, 221, 209, 0.17);
  backdrop-filter: blur(12px);
}

.ai-core strong {
  font-size: 1.8rem;
  line-height: 1;
  letter-spacing: -0.06em;
}

.ai-core small {
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.58rem;
  font-weight: 720;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.coordinate-note {
  position: absolute;
  color: rgba(255, 255, 255, 0.56);
  font: 600 0.62rem/1.35 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.coordinate-note::before {
  content: "";
  position: absolute;
  background: rgba(85, 221, 209, 0.56);
}

.coordinate-theta {
  top: 23px;
  right: -10px;
}

.coordinate-theta::before {
  width: 42px;
  height: 1px;
  right: calc(100% + 9px);
  top: 50%;
}

.coordinate-phi {
  top: 49%;
  left: -32px;
}

.coordinate-phi::before {
  width: 1px;
  height: 38px;
  left: -10px;
  top: calc(50% - 19px);
}

.coordinate-space {
  right: -15px;
  bottom: 28px;
  color: var(--cyan);
}

.ai-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 11px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.74);
  background: rgba(5, 15, 28, 0.68);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  backdrop-filter: blur(10px);
  font-size: 0.62rem;
  font-weight: 740;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.ai-chip i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 9px var(--cyan);
}

.ai-chip-top { top: 17px; right: -4px; }
.ai-chip-side { top: 48%; left: -39px; }
.ai-chip-bottom { right: -16px; bottom: 25px; }

@keyframes reticle-spin {
  to { transform: rotate(360deg); }
}

.hero-stats {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.24);
  border-bottom: 0;
  border-left: 0;
  border-right: 0;
  border-radius: 0;
  background: rgba(3, 10, 18, 0.22);
  backdrop-filter: blur(5px);
}

.hero-stats > div {
  min-height: 94px;
  padding: 18px 24px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-stats > div + div {
  border-left: 1px solid rgba(255, 255, 255, 0.13);
}

.hero-stats strong {
  font-size: 1.55rem;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.hero-stats span {
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.azimuth-ruler {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: 112px;
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto 1fr auto 1fr auto;
  gap: 10px;
  align-items: center;
  color: rgba(255, 255, 255, 0.46);
  font: 600 0.57rem/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.azimuth-ruler i {
  height: 1px;
  background: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.4) 0 1px, transparent 1px 8px);
}

/* Spherical intelligence flow */
.intelligence-band {
  position: relative;
  z-index: 5;
  color: #dbe7ee;
  background: #07101d;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.intelligence-flow {
  min-height: 136px;
  display: grid;
  grid-template-columns: 1.35fr 1fr auto 1fr auto 1fr;
  gap: 22px;
  align-items: center;
}

.flow-intro {
  padding-right: 26px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.flow-intro span,
.flow-stage small {
  display: block;
  color: var(--cyan);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.flow-intro strong {
  display: block;
  margin-top: 5px;
  max-width: 260px;
  font-size: 0.98rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.flow-stage {
  display: flex;
  align-items: center;
  gap: 13px;
}

.flow-stage strong {
  display: block;
  margin-top: 2px;
  font-size: 0.78rem;
  white-space: nowrap;
}

.flow-arrow {
  color: rgba(255, 255, 255, 0.28);
}

.flow-symbol {
  position: relative;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(85, 221, 209, 0.42);
  border-radius: 13px;
  background: rgba(85, 221, 209, 0.05);
}

.flow-sphere::before,
.flow-sphere::after {
  content: "";
  position: absolute;
  border: 1px solid var(--cyan);
  border-radius: 50%;
}

.flow-sphere::before { inset: 9px; }
.flow-sphere::after { inset: 9px 16px; }

.flow-network i {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.flow-network i:first-child { left: 8px; top: 20px; }
.flow-network i:nth-child(2) { right: 8px; top: 8px; }
.flow-network i:nth-child(3) { right: 8px; bottom: 8px; }

.flow-network::before,
.flow-network::after {
  content: "";
  position: absolute;
  left: 14px;
  width: 21px;
  height: 1px;
  background: var(--cyan);
  transform-origin: left;
}

.flow-network::before { top: 21px; transform: rotate(-31deg); }
.flow-network::after { top: 23px; transform: rotate(31deg); }

.flow-voxel {
  border-radius: 8px;
  background-image:
    linear-gradient(rgba(85, 221, 209, 0.45) 1px, transparent 1px),
    linear-gradient(90deg, rgba(85, 221, 209, 0.45) 1px, transparent 1px);
  background-size: 11px 11px;
  box-shadow: inset -7px -7px 0 rgba(75, 117, 230, 0.12);
}

/* Dataset cards */
.intro-section {
  background: var(--surface);
}

.sensor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
}

.sensor-card {
  position: relative;
  min-height: 360px;
  padding: 28px 0;
  overflow: hidden;
  border: 0;
  border-top: 1px solid rgba(11, 20, 36, 0.36);
  border-radius: 0;
  background: transparent;
}

.sensor-card::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  right: -110px;
  bottom: -120px;
  border-radius: 50%;
  opacity: 0.08;
}

.sensor-card-camera::after { background: var(--cyan); }
.sensor-card-lidar::after { background: var(--purple); }
.sensor-card-pose::after { background: var(--gold); }

.sensor-card h3 {
  margin: 80px 0 10px;
  font-size: 1.4rem;
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.sensor-card > p:not(.card-index) {
  margin: 0;
  color: var(--ink-soft);
}

.card-index {
  position: absolute;
  top: 28px;
  right: 0;
  margin: 0;
  color: #9aa5b2;
  font-size: 0.75rem;
  font-weight: 760;
}

.sensor-icon {
  position: relative;
  width: 72px;
  height: 72px;
}

.sphere-icon {
  border: 1.8px solid var(--cyan-dark);
  border-radius: 50%;
}

.sphere-icon span {
  position: absolute;
  border: 1.3px solid var(--cyan-dark);
  border-radius: 50%;
}

.sphere-icon span:first-child { inset: 9px 25px; }
.sphere-icon span:nth-child(2) { inset: 22px 4px; }
.sphere-icon span:nth-child(3) { inset: 34px 2px auto; height: 1px; border-width: 1px 0 0; border-radius: 0; }

.lidar-icon {
  display: grid;
  place-items: center;
  border: 1px solid rgba(118, 85, 216, 0.35);
  border-radius: 50%;
}

.lidar-icon span {
  position: absolute;
  width: 56px;
  height: 16px;
  border: 1.5px solid var(--purple);
  border-radius: 50%;
}

.lidar-icon span:nth-child(2) { transform: rotate(45deg); }
.lidar-icon span:nth-child(3) { transform: rotate(90deg); }
.lidar-icon span:nth-child(4) { transform: rotate(135deg); }

.pose-icon {
  border: 1px solid rgba(213, 156, 38, 0.35);
  border-radius: 18px;
}

.pose-icon span {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(213, 156, 38, 0.14);
}

.pose-icon span:first-child { left: 14px; top: 37px; }
.pose-icon span:nth-child(2) { right: 14px; top: 16px; }
.pose-icon span:nth-child(3) { right: 14px; bottom: 11px; }

.pose-icon::before,
.pose-icon::after {
  content: "";
  position: absolute;
  left: 25px;
  width: 34px;
  height: 1px;
  background: var(--gold);
  transform-origin: left;
}

.pose-icon::before { top: 40px; transform: rotate(-31deg); }
.pose-icon::after { top: 42px; transform: rotate(27deg); }

.sensor-spec {
  position: absolute;
  z-index: 1;
  left: 0;
  bottom: 28px;
  display: flex;
  flex-direction: column;
}

.sensor-spec strong {
  font-size: 1.42rem;
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.sensor-spec span {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 0.76rem;
}

/* Scenes */
.scene-section {
  background: #091322;
  color: #fff;
}

.scene-section .eyebrow { color: var(--cyan); }
.scene-section .section-heading > p:last-child { color: rgba(255, 255, 255, 0.62); }

.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 250px;
  gap: 12px;
}

.scene-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border-radius: 2px;
  background: #101c2d;
}

.scene-card-wide { grid-column: span 2; }

.scene-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(.2,.7,.2,1), filter 300ms ease;
}

.scene-card:hover img {
  transform: scale(1.035);
  filter: saturate(1.1);
}

.scene-overlay {
  position: absolute;
  inset: auto 0 0;
  padding: 46px 20px 18px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 14px;
  background: linear-gradient(transparent, rgba(2, 8, 16, 0.86));
}

.scene-overlay span {
  font-weight: 760;
}

.scene-overlay small {
  max-width: 180px;
  color: rgba(255, 255, 255, 0.62);
  text-align: right;
  line-height: 1.3;
}

.figure-card,
.method-figure,
.benchmark-visual {
  width: 100%;
  padding: 0;
  overflow: hidden;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  cursor: zoom-in;
}

.taxonomy-figure {
  position: relative;
  margin-top: 18px;
  padding: 48px 30px 26px;
  border-color: rgba(255, 255, 255, 0.13);
  background: #fff;
}

.taxonomy-figure img {
  width: 100%;
}

.figure-label {
  display: block;
  position: absolute;
  top: 16px;
  left: 20px;
  color: #6b7786;
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.zoom-hint {
  position: absolute;
  right: 15px;
  bottom: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  color: #fff;
  background: rgba(7, 17, 31, 0.72);
  font-size: 0.67rem;
  font-weight: 700;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.zoomable {
  position: relative;
}

.zoomable:hover .zoom-hint,
.zoomable:focus-visible .zoom-hint {
  opacity: 1;
  transform: translateY(0);
}

/* Annotations */
.annotation-section {
  background: #e8ebe7;
}

.annotation-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 70px;
  align-items: center;
}

.hierarchy-steps {
  margin-top: 34px;
  display: flex;
  align-items: center;
  gap: 11px;
}

.hierarchy-steps div {
  flex: 1;
  min-width: 0;
  padding: 14px 12px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
}

.hierarchy-steps strong,
.hierarchy-steps span {
  display: block;
}

.hierarchy-steps strong {
  font-size: 1.7rem;
  line-height: 1;
}

.hierarchy-steps span {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 0.65rem;
  line-height: 1.25;
}

.hierarchy-steps i {
  color: #8b98a8;
  font-style: normal;
}

.class-chips {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.class-chips span {
  --chip: #8693a2;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.4);
  font-size: 0.7rem;
  font-weight: 670;
}

.class-chips span::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--chip);
}

.class-person { --chip: #ed695c !important; }
.class-vehicle { --chip: #f3a536 !important; }
.class-bike { --chip: #4bc7c0 !important; }
.class-building { --chip: #7e57c2 !important; }
.class-vegetation { --chip: #43a047 !important; }
.class-pillar { --chip: #8d6e63 !important; }
.class-road { --chip: #546e7a !important; }
.class-surface { --chip: #b0bec5 !important; }
.class-other { --chip: #ec407a !important; }

.hierarchy-figure {
  position: relative;
  min-height: 460px;
  padding: 74px 26px 28px;
  display: grid;
  place-items: center;
  box-shadow: none;
}

/* Benchmarks */
.benchmark-section {
  background: #fff;
}

.benchmark-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-bottom: 0;
  border-top: 1px solid rgba(11, 20, 36, 0.35);
  border-bottom: 1px solid rgba(11, 20, 36, 0.35);
}

.benchmark-tab {
  position: relative;
  min-height: 122px;
  padding: 22px;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 16px;
  text-align: left;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  cursor: pointer;
  transition: border 180ms ease, background 180ms ease, transform 180ms ease;
}

.benchmark-tab:hover {
  transform: none;
  background: rgba(11, 20, 36, 0.035);
}

.benchmark-tab.is-active {
  color: var(--ink);
  border-color: var(--line);
  background: linear-gradient(180deg, rgba(85, 221, 209, 0.12), transparent);
  box-shadow: inset 0 3px 0 var(--cyan-dark);
}

.benchmark-tab > span {
  grid-row: span 2;
  color: #91a0ae;
  font-size: 0.72rem;
  font-weight: 800;
}

.benchmark-tab.is-active > span { color: var(--cyan-dark); }

.benchmark-tab strong {
  align-self: end;
  font-size: 1rem;
  line-height: 1.2;
}

.benchmark-tab small {
  align-self: start;
  margin-top: 5px;
  color: #7b8997;
}

.benchmark-tab.is-active small { color: #667585; }

.benchmark-tab:last-child { border-right: 0; }

.benchmark-panel {
  padding: 30px 0 0;
  display: block;
  border-radius: 0;
  background: transparent;
}

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

.benchmark-copy {
  padding: 42px 34px 42px 0;
  display: flex;
  flex-direction: column;
  border-radius: 0;
  background: transparent;
}

.panel-number {
  margin: 0 0 auto;
  color: var(--cyan-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.benchmark-copy h3 {
  margin: 80px 0 14px;
  font-size: 2rem;
  line-height: 1.06;
  letter-spacing: -0.05em;
}

.benchmark-copy > p:not(.panel-number) {
  margin: 0;
  color: var(--ink-soft);
}

.benchmark-copy dl {
  margin: 36px 0 0;
}

.benchmark-copy dl div {
  padding: 10px 0;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  font-size: 0.76rem;
}

.benchmark-copy dt { color: #8a96a3; }
.benchmark-copy dd { margin: 0; text-align: right; font-weight: 700; }

.benchmark-visual {
  min-height: 580px;
  display: grid;
  place-items: center;
  border: 0;
  border-left: 1px solid var(--line);
  background: #f6f7f4;
}

.benchmark-visual img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.benchmark-visual-portrait img {
  max-height: 710px;
}

.benchmark-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: #fff;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  color: var(--ink);
  font-size: 0.86rem;
  font-variant-numeric: tabular-nums;
}

.results-table caption {
  padding: 24px 26px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.results-table caption strong,
.results-table caption span {
  display: block;
}

.results-table caption strong {
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.results-table caption span {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 0.74rem;
}

.results-table th,
.results-table td {
  padding: 10px 26px;
  text-align: right;
  border-bottom: 1px solid rgba(11, 20, 36, 0.09);
}

.results-table th:first-child {
  text-align: left;
}

.results-table thead th {
  color: #687787;
  background: #f6f8fa;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.results-table tbody th {
  font-weight: 650;
}

.results-table tbody tr:hover {
  background: rgba(74, 245, 255, 0.045);
}

.results-table tbody tr:last-child th,
.results-table tbody tr:last-child td {
  border-bottom: 0;
}

.results-table .leader th {
  color: #07111f;
  font-weight: 850;
}

.results-table td.best {
  color: #8e4b00;
  background: #ffe8cc;
  font-weight: 850;
}

.results-table td.second-best {
  color: #275d8c;
  background: #e1f0ff;
  font-weight: 750;
}

/* SphereOcc */
.sphereocc-section {
  color: #fff;
  background: #0b1626;
}

.sphereocc-section .eyebrow { color: var(--cyan); }

.method-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: end;
}

.method-header > div:first-child {
  max-width: 720px;
}

.method-header > div:first-child > p:last-child {
  color: rgba(255, 255, 255, 0.62);
}

.method-metrics {
  display: flex;
  gap: 10px;
}

.method-metrics div {
  min-width: 132px;
  padding: 17px 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0;
  background: transparent;
}

.method-metrics strong,
.method-metrics span {
  display: block;
}

.method-metrics strong {
  color: var(--cyan);
  font-size: 1.55rem;
  letter-spacing: -0.04em;
}

.method-metrics span {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.72rem;
}

.method-metrics small {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.62rem;
  white-space: nowrap;
}

.method-figure {
  position: relative;
  margin-top: 44px;
  padding: 24px;
  border-color: rgba(255, 255, 255, 0.13);
  background: #fff;
}

.method-figure img { width: 100%; }

.method-pillars {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.method-pillars article {
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.025);
}

.method-pillars article > span {
  display: inline-grid;
  place-items: center;
  min-width: 52px;
  height: 28px;
  border-radius: 2px;
  color: #07111f;
  background: var(--cyan);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.05em;
}

.method-pillars h3 {
  margin: 18px 0 8px;
  font-size: 1.28rem;
  letter-spacing: -0.03em;
}

.method-pillars p {
  margin: 0;
  color: rgba(255, 255, 255, 0.58);
}

/* Statistics */
.statistics-section {
  background: #f0f4f5;
}

.statistics-layout {
  display: grid;
  grid-template-columns: 0.34fr 0.66fr;
  gap: 60px;
  align-items: center;
}

.statistics-figure {
  padding: 20px;
  box-shadow: none;
}

/* Resources */
.resource-section {
  background: #fff;
}

.resource-heading {
  max-width: 700px;
}

.resource-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid rgba(11, 20, 36, 0.35);
  border-bottom: 1px solid rgba(11, 20, 36, 0.35);
}

.resource-card {
  position: relative;
  min-height: 230px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.resource-card:hover {
  transform: none;
  border-color: var(--line);
  box-shadow: inset 0 -4px 0 var(--cyan-dark);
  background: rgba(85, 221, 209, 0.05);
}

.resource-card:last-child { border-right: 0; }

.resource-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(11, 20, 36, 0.3);
  border-radius: 2px;
  color: var(--cyan-dark);
  background: transparent;
  font-size: 1.1rem;
  font-weight: 800;
}

.resource-card small {
  margin-top: auto;
  color: #82909e;
  font-size: 0.67rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.resource-card strong {
  margin-top: 2px;
  font-size: 1.12rem;
}

.resource-card em {
  margin-top: 5px;
  color: var(--cyan-dark);
  font-size: 0.72rem;
  font-style: normal;
  font-weight: 700;
}

.citation-card {
  margin-top: 18px;
  padding: 34px;
  display: grid;
  grid-template-columns: 0.36fr 0.64fr;
  gap: 46px;
  border-radius: 2px;
  color: #fff;
  background: #0c1828;
}

.citation-card h3 {
  margin: 0;
  font-size: 1.75rem;
  letter-spacing: -0.04em;
}

.citation-card > div:first-child > p:last-child {
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.84rem;
}

.citation-code {
  position: relative;
  padding: 20px;
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.045);
}

.citation-code pre {
  margin: 0;
  color: #cbd7df;
  font: 0.76rem/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
}

.copy-button {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 6px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  color: #fff;
  background: #1a2a3e;
  font-size: 0.67rem;
  font-weight: 700;
  cursor: pointer;
}

/* Footer and overlays */
.site-footer {
  padding: 54px 0;
  color: rgba(255, 255, 255, 0.58);
  background: #07101d;
}

.site-footer .page-shell {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 36px;
  align-items: center;
}

.footer-brand { color: #fff; }
.site-footer p { margin: 0; font-size: 0.78rem; }
.footer-note { text-align: right; }

.lightbox {
  width: min(95vw, 1500px);
  max-width: none;
  max-height: 92vh;
  padding: 52px 18px 18px;
  overflow: auto;
  border: 0;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.45);
}

.lightbox::backdrop {
  background: rgba(2, 8, 16, 0.82);
  backdrop-filter: blur(5px);
}

.lightbox img {
  width: 100%;
  height: auto;
}

.lightbox-close {
  position: absolute;
  top: 8px;
  right: 12px;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: #0c1828;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

.toast {
  position: fixed;
  z-index: 300;
  left: 50%;
  bottom: 28px;
  padding: 10px 15px;
  border-radius: 999px;
  color: #fff;
  background: #0c1828;
  box-shadow: 0 12px 35px rgba(4, 14, 26, 0.25);
  font-size: 0.78rem;
  font-weight: 650;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* Responsive */
@media (max-width: 980px) {
  :root { --page: min(100% - 34px, 850px); }
  .section { padding: 88px 0; }
  .site-nav { gap: 18px; }
  .hero-ai { display: none; }
  .hero-copy { max-width: 720px; }
  .intelligence-flow {
    padding: 24px 0;
    grid-template-columns: repeat(3, 1fr);
  }
  .flow-intro {
    grid-column: 1 / -1;
    padding: 0 0 18px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }
  .flow-intro strong { max-width: none; }
  .flow-arrow { display: none; }
  .split-heading,
  .annotation-layout,
  .statistics-layout { grid-template-columns: 1fr; gap: 34px; }
  .sensor-grid { grid-template-columns: 1fr; }
  .sensor-card { min-height: 290px; }
  .sensor-card h3 { margin-top: 46px; }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .scene-card-wide { grid-column: auto; }
  .benchmark-panel { grid-template-columns: 1fr; }
  .benchmark-copy { min-height: 380px; }
  .benchmark-copy h3 { margin-top: 60px; }
  .method-header { grid-template-columns: 1fr; }
  .resource-grid { grid-template-columns: repeat(2, 1fr); }
  .citation-card { grid-template-columns: 1fr; }
  .site-footer .page-shell { grid-template-columns: 1fr; gap: 14px; }
  .footer-note { text-align: left; }
}

@media (max-width: 760px) {
  :root { --page: calc(100% - 28px); }
  .section { padding: 72px 0; }
  .site-header.is-open { color: var(--ink); background: #fff; }
  .menu-toggle { display: block; }
  .site-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    padding: 18px 22px 24px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    color: var(--ink);
    background: #fff;
    box-shadow: 0 18px 30px rgba(13, 27, 48, 0.12);
  }
  .site-header.is-open .site-nav { display: flex; }
  .site-nav a { padding: 10px 0; }
  .site-nav a::after { display: none; }
  .site-header.is-open .menu-toggle span:first-child { transform: translateY(4px) rotate(45deg); }
  .site-header.is-open .menu-toggle span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }
  .hero { height: auto; min-height: 820px; }
  .hero-image { object-position: 58% center; }
  .hero-content { min-height: 820px; padding: 118px 0 260px; align-items: center; }
  .hero h1 { font-size: clamp(4rem, 20vw, 6.5rem); }
  .hero-subtitle br { display: none; }
  .hero-stats { bottom: 18px; grid-template-columns: repeat(2, 1fr); }
  .hero-stats > div { min-height: 80px; padding: 12px 15px; }
  .hero-stats > div:nth-child(3) { border-left: 0; border-top: 1px solid rgba(255,255,255,.16); }
  .hero-stats > div:nth-child(4) { border-top: 1px solid rgba(255,255,255,.16); }
  .hero-stats strong { font-size: 1.22rem; }
  .hero-stats span { font-size: 0.6rem; }
  .azimuth-ruler { bottom: 194px; gap: 5px; }
  .intelligence-flow {
    grid-template-columns: 1fr;
    gap: 17px;
  }
  .flow-intro { grid-column: auto; }
  .flow-stage { padding: 0 2px; }
  .section-heading h2,
  .annotation-copy h2,
  .statistics-copy h2,
  .resource-heading h2,
  .method-header h2 { font-size: 2.45rem; }
  .scene-grid { grid-auto-rows: 210px; }
  .scene-overlay { display: block; }
  .scene-overlay small { display: block; margin-top: 2px; text-align: left; }
  .taxonomy-figure { padding-inline: 10px; }
  .hierarchy-figure { min-height: 300px; padding-inline: 10px; }
  .benchmark-tabs { grid-template-columns: 1fr; }
  .benchmark-tab { min-height: 94px; }
  .benchmark-panel { min-height: auto; padding: 10px; }
  .benchmark-copy { min-height: 350px; padding: 30px 22px; }
  .benchmark-visual { min-height: 300px; }
  .results-table th,
  .results-table td { padding: 9px 14px; }
  .method-metrics { width: 100%; }
  .method-metrics div { flex: 1; }
  .method-pillars { grid-template-columns: 1fr; }
  .resource-grid { grid-template-columns: 1fr; }
  .resource-card { min-height: 190px; }
  .citation-card { padding: 24px 18px; }
}

@media (max-width: 500px) {
  .scene-grid { grid-template-columns: 1fr; }
  .hierarchy-steps { flex-wrap: wrap; }
  .hierarchy-steps i { display: none; }
  .hierarchy-steps div { flex-basis: 100%; display: flex; align-items: center; gap: 12px; }
  .hierarchy-steps span { margin-top: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* Cyberpunk research theme ------------------------------------------------- */
:root {
  --ink: #edfbff;
  --ink-soft: #93a8b7;
  --paper: #05050a;
  --surface: #090a11;
  --line: rgba(86, 242, 255, 0.19);
  --cyan: #4af5ff;
  --cyan-dark: #00c9dc;
  --blue: #5967ff;
  --purple: #b85cff;
  --magenta: #ff3dae;
  --gold: #ffd166;
  --shadow: 0 20px 70px rgba(0, 0, 0, 0.42);
}

body {
  background:
    radial-gradient(circle at 8% 28%, rgba(74, 245, 255, 0.055), transparent 25%),
    radial-gradient(circle at 91% 68%, rgba(255, 61, 174, 0.05), transparent 28%),
    var(--paper);
}

body::before {
  content: "";
  position: fixed;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(74, 245, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 61, 174, 0.018) 1px, transparent 1px);
  background-size: 44px 44px;
}

.eyebrow {
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(74, 245, 255, 0.3);
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(5, 5, 10, 0.9);
  box-shadow: 0 1px 0 rgba(74, 245, 255, 0.18), 0 8px 34px rgba(0, 0, 0, 0.22);
}

.site-nav a::after {
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  box-shadow: 0 0 12px rgba(74, 245, 255, 0.7);
}

.hero::after {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  opacity: 0.16;
  background: repeating-linear-gradient(0deg, transparent 0 4px, rgba(123, 246, 255, 0.12) 4px 5px);
  mask-image: linear-gradient(to bottom, #000, transparent 72%);
}

.hero-shade {
  background:
    radial-gradient(circle at 83% 26%, rgba(255, 40, 180, 0.22), transparent 24%),
    radial-gradient(circle at 74% 58%, rgba(37, 226, 255, 0.16), transparent 31%),
    linear-gradient(90deg, rgba(2, 3, 9, 0.92) 0%, rgba(4, 4, 13, 0.61) 44%, rgba(4, 2, 12, 0.09) 80%),
    linear-gradient(0deg, rgba(3, 3, 10, 0.92) 0%, rgba(3, 4, 12, 0.08) 45%, rgba(5, 2, 13, 0.35) 100%);
}

.longitude-grid {
  opacity: 0.2;
  background-image:
    linear-gradient(rgba(74, 245, 255, 0.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 61, 174, 0.45) 1px, transparent 1px);
}

.pulse-dot {
  background: var(--magenta);
  box-shadow: 0 0 0 4px rgba(255, 61, 174, 0.15), 0 0 18px rgba(255, 61, 174, 0.95);
}

.hero h1 {
  color: #fff;
  background: linear-gradient(96deg, #ffffff 5%, #bffcff 48%, #f3c7ff 76%, #ff76c7 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(-4px 0 16px rgba(74, 245, 255, 0.16)) drop-shadow(5px 0 19px rgba(255, 61, 174, 0.15));
}

.button-primary {
  color: #02060a;
  background: linear-gradient(110deg, var(--cyan), #91fff4);
  box-shadow: 0 0 24px rgba(74, 245, 255, 0.2);
}

.button-primary:hover {
  box-shadow: 0 0 32px rgba(74, 245, 255, 0.4);
}

.button-glass {
  border-color: rgba(255, 61, 174, 0.58);
  background: rgba(255, 61, 174, 0.06);
  box-shadow: inset 0 0 18px rgba(255, 61, 174, 0.05);
}

.button-glass:hover {
  border-color: var(--magenta);
  background: rgba(255, 61, 174, 0.12);
  box-shadow: 0 0 24px rgba(255, 61, 174, 0.2);
}

.hero-ai::before {
  background: radial-gradient(circle, rgba(74, 245, 255, 0.22), rgba(184, 92, 255, 0.09) 38%, rgba(255, 61, 174, 0.05) 58%, transparent 73%);
}

.ai-reticle {
  border-color: rgba(74, 245, 255, 0.32);
  box-shadow: 0 0 0 18px rgba(255, 61, 174, 0.025), inset 0 0 58px rgba(74, 245, 255, 0.06), 0 0 36px rgba(184, 92, 255, 0.08);
}

.ai-reticle span:first-child {
  border-color: rgba(255, 61, 174, 0.28);
}

.ai-core {
  border-color: rgba(74, 245, 255, 0.84);
  background: rgba(5, 4, 13, 0.55);
  box-shadow: inset 0 0 30px rgba(74, 245, 255, 0.15), 0 0 28px rgba(74, 245, 255, 0.2), 0 0 55px rgba(255, 61, 174, 0.12);
}

.coordinate-space {
  color: var(--magenta);
  text-shadow: 0 0 13px rgba(255, 61, 174, 0.66);
}

.azimuth-ruler {
  color: rgba(191, 252, 255, 0.59);
}

.azimuth-ruler i {
  background: repeating-linear-gradient(90deg, rgba(74, 245, 255, 0.56) 0 1px, transparent 1px 8px);
}

.hero-stats {
  border-top-color: rgba(74, 245, 255, 0.34);
  background: rgba(3, 3, 10, 0.5);
  box-shadow: 0 -12px 50px rgba(255, 61, 174, 0.035);
}

.hero-stats > div + div {
  border-left-color: rgba(255, 61, 174, 0.17);
}

.hero-stats strong {
  color: #fff;
  text-shadow: 0 0 20px rgba(74, 245, 255, 0.15);
}

.intro-section,
.benchmark-section,
.resource-section {
  background: rgba(7, 7, 13, 0.9);
}

.annotation-section,
.statistics-section {
  background:
    radial-gradient(circle at 88% 24%, rgba(184, 92, 255, 0.07), transparent 25%),
    #0a0911;
}

.scene-section,
.sphereocc-section {
  background:
    radial-gradient(circle at 10% 15%, rgba(255, 61, 174, 0.07), transparent 24%),
    radial-gradient(circle at 88% 75%, rgba(74, 245, 255, 0.06), transparent 28%),
    #05070c;
}

.sensor-card {
  border-top-color: rgba(74, 245, 255, 0.38);
}

.sensor-card:nth-child(2) { border-top-color: rgba(184, 92, 255, 0.5); }
.sensor-card:nth-child(3) { border-top-color: rgba(255, 61, 174, 0.44); }

.sensor-card:hover {
  background: linear-gradient(180deg, rgba(74, 245, 255, 0.045), transparent 62%);
}

.card-index { color: rgba(255, 61, 174, 0.75); }

.scene-card {
  outline: 1px solid rgba(74, 245, 255, 0.08);
  outline-offset: -1px;
}

.scene-card:hover {
  z-index: 2;
  outline-color: rgba(74, 245, 255, 0.72);
  box-shadow: 0 0 0 1px rgba(255, 61, 174, 0.2), 0 0 34px rgba(74, 245, 255, 0.15);
}

.figure-card,
.method-figure,
.benchmark-visual {
  border-color: rgba(74, 245, 255, 0.29);
  box-shadow: 0 0 0 1px rgba(255, 61, 174, 0.06), 0 16px 50px rgba(0, 0, 0, 0.32);
}

.figure-label { color: #64707c; }

.hierarchy-steps div,
.class-chips span {
  border-color: rgba(74, 245, 255, 0.17);
  background: rgba(255, 255, 255, 0.025);
}

.benchmark-tabs,
.resource-grid {
  border-color: rgba(74, 245, 255, 0.36);
}

.benchmark-tab,
.resource-card {
  border-right-color: rgba(255, 61, 174, 0.17);
}

.benchmark-tab:hover,
.resource-card:hover {
  background: linear-gradient(180deg, rgba(74, 245, 255, 0.055), rgba(255, 61, 174, 0.025));
}

.benchmark-tab.is-active {
  color: var(--ink);
  background: linear-gradient(180deg, rgba(74, 245, 255, 0.09), rgba(255, 61, 174, 0.035));
  box-shadow: inset 0 3px 0 var(--cyan), inset 0 -1px 0 rgba(255, 61, 174, 0.5), 0 0 24px rgba(74, 245, 255, 0.04);
}

.benchmark-tab.is-active small { color: var(--ink-soft); }
.benchmark-visual { border-left-color: rgba(255, 61, 174, 0.24); }

.method-metrics strong {
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(74, 245, 255, 0.32);
}

.method-pillars article:first-child { border-color: rgba(74, 245, 255, 0.3); }
.method-pillars article:last-child { border-color: rgba(255, 61, 174, 0.3); }
.method-pillars article:last-child > span { background: var(--magenta); }

.resource-icon {
  color: var(--cyan);
  border-color: rgba(74, 245, 255, 0.5);
  box-shadow: inset 0 0 16px rgba(74, 245, 255, 0.05);
}

.resource-card:nth-child(even) .resource-icon {
  color: var(--magenta);
  border-color: rgba(255, 61, 174, 0.5);
  box-shadow: inset 0 0 16px rgba(255, 61, 174, 0.05);
}

.resource-card em { color: var(--magenta); }

.citation-card {
  border: 1px solid rgba(74, 245, 255, 0.27);
  background:
    linear-gradient(115deg, rgba(74, 245, 255, 0.055), transparent 38%, rgba(255, 61, 174, 0.045)),
    #080914;
  box-shadow: 0 0 42px rgba(184, 92, 255, 0.05);
}

.copy-button {
  border-color: rgba(255, 61, 174, 0.42);
  background: rgba(255, 61, 174, 0.09);
}

.site-footer {
  border-top: 1px solid rgba(255, 61, 174, 0.19);
  background: #030307;
}

.toast {
  border: 1px solid rgba(74, 245, 255, 0.38);
  background: #080914;
  box-shadow: 0 0 30px rgba(74, 245, 255, 0.12), 0 0 42px rgba(255, 61, 174, 0.07);
}

@media (max-width: 760px) {
  .site-header.is-open {
    color: var(--ink);
    background: #07070d;
  }
  .site-nav {
    color: var(--ink);
    background: #07070d;
    box-shadow: 0 1px 0 rgba(74, 245, 255, 0.22), 0 20px 40px rgba(0, 0, 0, 0.45);
  }
}

/* Dataset video ---------------------------------------------------------- */
.motion-section {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 16%, rgba(74, 245, 255, 0.09), transparent 28%),
    radial-gradient(circle at 84% 76%, rgba(255, 61, 174, 0.075), transparent 30%),
    #05050a;
}

.motion-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(74, 245, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 61, 174, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, transparent, #000 24%, #000 78%, transparent);
}

.motion-heading {
  position: relative;
  z-index: 1;
}

.motion-frame {
  position: relative;
  z-index: 1;
  isolation: isolate;
  width: 100%;
  padding: 10px;
  border: 1px solid rgba(74, 245, 255, 0.34);
  background: rgba(2, 3, 8, 0.82);
  box-shadow:
    0 0 0 1px rgba(255, 61, 174, 0.1),
    0 26px 90px rgba(0, 0, 0, 0.48),
    0 0 54px rgba(74, 245, 255, 0.07);
}

.motion-frame::after {
  content: "";
  position: absolute;
  z-index: 3;
  inset: 10px;
  pointer-events: none;
  opacity: 0.16;
  background: repeating-linear-gradient(0deg, transparent 0 5px, rgba(113, 250, 255, 0.13) 5px 6px);
}

.motion-corners {
  position: absolute;
  z-index: 4;
  inset: -2px;
  pointer-events: none;
  background:
    linear-gradient(var(--cyan), var(--cyan)) left top / 72px 2px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) left top / 2px 72px no-repeat,
    linear-gradient(var(--magenta), var(--magenta)) right top / 72px 2px no-repeat,
    linear-gradient(var(--magenta), var(--magenta)) right top / 2px 72px no-repeat,
    linear-gradient(var(--magenta), var(--magenta)) left bottom / 72px 2px no-repeat,
    linear-gradient(var(--magenta), var(--magenta)) left bottom / 2px 72px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) right bottom / 72px 2px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) right bottom / 2px 72px no-repeat;
  filter: drop-shadow(0 0 7px rgba(74, 245, 255, 0.42));
}

.motion-video {
  display: block;
  width: 100%;
  aspect-ratio: 5188 / 1979;
  object-fit: cover;
  background: #000;
}

.motion-readout {
  position: absolute;
  z-index: 5;
  top: 28px;
  left: 30px;
  right: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: none;
  color: rgba(233, 253, 255, 0.86);
  font: 650 0.68rem/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.motion-readout span {
  padding: 7px 9px;
  border: 1px solid rgba(74, 245, 255, 0.27);
  background: rgba(2, 4, 10, 0.6);
  backdrop-filter: blur(7px);
  box-shadow: inset 0 0 13px rgba(74, 245, 255, 0.035);
}

.motion-readout span:nth-child(even) {
  border-color: rgba(255, 61, 174, 0.3);
}

@media (max-width: 760px) {
  .motion-frame { padding: 5px; }
  .motion-frame::after { inset: 5px; }
  .motion-readout {
    top: 14px;
    left: 14px;
    right: 14px;
    gap: 5px;
  }
  .motion-readout span {
    padding: 5px 6px;
    font-size: 0.53rem;
  }
  .motion-readout span:nth-child(3) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-video { display: none; }
  .hero { background: #07101d url('../assets/images/hero-urban-sequence-106.webp') center / cover no-repeat; }
}

/* Preserve the complete ERP frame in the hero. A softly enlarged still fills
   the unused vertical space without cropping the foreground video. */
.hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: -34px;
  pointer-events: none;
  opacity: 0.42;
  background: #05050a url('../assets/images/hero-urban-sequence-106.webp') center / cover no-repeat;
  filter: blur(24px) saturate(0.8) brightness(0.62);
}

.hero-video {
  z-index: 0;
  object-fit: contain;
  object-position: center top;
  transform: none;
  filter: saturate(0.94) contrast(1.03);
}

/* Keep the complete ERP frame while bringing its lower edge into contact
   with the azimuth scale. Move the full title block down as one unit. */
.hero-copy {
  position: relative;
  top: 0;
}

/* Institutional identity, author line, and scene-video explorer ------------ */
.nav-identity {
  display: flex;
  align-items: center;
  gap: 15px;
  min-width: 0;
}

.affiliation-logos {
  display: flex;
  align-items: center;
  gap: 9px;
  padding-right: 17px;
  border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.site-header.is-scrolled .affiliation-logos {
  border-right-color: rgba(74, 245, 255, 0.2);
}

.affiliation-logo {
  width: 43px;
  height: 43px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.19);
  border-radius: 50%;
  background: rgba(2, 5, 12, 0.45);
  box-shadow: inset 0 0 11px rgba(74, 245, 255, 0.05);
}

.affiliation-logo img {
  display: block;
  width: 35px;
  height: 35px;
  object-fit: contain;
}

.affiliation-logo-zust img {
  width: 37px;
  height: 37px;
}

.hero-authors {
  max-width: 760px;
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 5px 16px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.82rem;
  font-weight: 620;
  line-height: 1.45;
}

.hero-authors span {
  white-space: nowrap;
}

.hero-authors sup,
.author-note sup {
  color: var(--cyan);
}

.author-note {
  margin: 7px 0 0;
  color: rgba(255, 255, 255, 0.48);
  font: 570 0.66rem/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.025em;
}

.hero-authors + .author-note + .hero-actions {
  margin-top: 22px;
}

.scene-explorer {
  margin-top: 42px;
  border: 1px solid rgba(74, 245, 255, 0.28);
  background: rgba(4, 6, 14, 0.76);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.32), 0 0 42px rgba(74, 245, 255, 0.045);
}

.scene-tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-bottom: 1px solid rgba(74, 245, 255, 0.22);
}

.scene-tab {
  position: relative;
  min-height: 82px;
  padding: 15px 17px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 11px;
  border: 0;
  border-right: 1px solid rgba(74, 245, 255, 0.14);
  color: rgba(232, 246, 255, 0.56);
  background: rgba(255, 255, 255, 0.015);
  text-align: left;
  cursor: pointer;
  transition: color 180ms ease, background 180ms ease;
}

.scene-tab:last-child { border-right: 0; }

.scene-tab::after {
  content: "";
  position: absolute;
  height: 2px;
  inset: auto 100% -1px 0;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  box-shadow: 0 0 13px rgba(74, 245, 255, 0.62);
  transition: right 180ms ease;
}

.scene-tab span {
  color: var(--cyan);
  font: 720 0.69rem/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.scene-tab strong {
  font-size: 0.82rem;
  line-height: 1.2;
}

.scene-tab:hover,
.scene-tab:focus-visible,
.scene-tab.is-active {
  color: #fff;
  background: linear-gradient(180deg, rgba(74, 245, 255, 0.075), rgba(255, 61, 174, 0.025));
}

.scene-tab.is-active::after { right: 0; }

.scene-panel {
  padding: 26px;
}

.scene-panel > header {
  margin-bottom: 19px;
  display: flex;
  align-items: baseline;
  gap: 13px;
}

.scene-panel > header span {
  color: var(--magenta);
  font: 730 0.7rem/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.scene-panel > header h3 {
  margin: 0;
  color: #f4fbff;
  font-size: clamp(1.08rem, 1.8vw, 1.42rem);
  letter-spacing: -0.025em;
}

.fine-scene-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 15px;
}

.fine-scene-grid-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.fine-scene-grid-four { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.fine-scene-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(74, 245, 255, 0.16);
  background: #080a12;
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.fine-scene-card:hover {
  z-index: 1;
  border-color: rgba(74, 245, 255, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3), 0 0 24px rgba(74, 245, 255, 0.08);
}

.fine-scene-card video {
  display: block;
  width: 100%;
  aspect-ratio: 5188 / 1979;
  object-fit: cover;
  background: #020308;
}

.fine-scene-card > div {
  min-height: 76px;
  padding: 13px 14px 14px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 10px;
}

.fine-scene-card span {
  color: var(--cyan);
  font: 720 0.66rem/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.fine-scene-card strong {
  color: #eaf9ff;
  font-size: 0.82rem;
  line-height: 1.32;
}

.fine-scene-card small {
  color: rgba(218, 235, 245, 0.42);
  font: 560 0.56rem/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: nowrap;
}

.footer-contact {
  display: grid;
  justify-items: end;
  gap: 3px;
  font: 560 0.72rem/1.35 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.footer-contact span {
  margin-bottom: 3px;
  color: var(--cyan);
  font-size: 0.61rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.68);
}

.footer-contact a:hover { color: #fff; }

/* The hierarchy graphic is intrinsically wide, so it spans the section
   instead of being constrained to a narrow right-hand column. */
.annotation-layout {
  grid-template-columns: 1fr;
  gap: 25px;
  align-items: start;
}

.annotation-copy {
  display: grid;
  grid-template-columns: minmax(290px, 0.78fr) minmax(0, 1.22fr);
  grid-template-areas:
    "eyebrow steps"
    "title steps"
    "intro chips";
  column-gap: 62px;
  align-items: start;
}

.annotation-copy .eyebrow { grid-area: eyebrow; }
.annotation-copy h2 { grid-area: title; }
.annotation-copy > p { grid-area: intro; }
.annotation-copy .hierarchy-steps { grid-area: steps; margin-top: 18px; }
.annotation-copy .class-chips { grid-area: chips; margin-top: 22px; }

.hierarchy-figure {
  width: 100%;
  min-height: 0;
  padding: 48px 20px 20px;
}

.hierarchy-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.benchmark-table-stack {
  display: grid;
  gap: 22px;
}

.benchmark-table-wrap {
  border-color: rgba(74, 245, 255, 0.25);
  background: rgba(7, 9, 16, 0.92);
  box-shadow: inset 0 0 38px rgba(74, 245, 255, 0.025);
}

.results-table {
  color: #dff7fb;
}

.results-table caption {
  border-bottom-color: rgba(74, 245, 255, 0.18);
  background: rgba(11, 13, 23, 0.96);
}

.results-table caption strong {
  color: #fff;
}

.results-table caption span {
  color: #8fa9b7;
}

.results-table thead th {
  color: #9bb6c2;
  border-bottom-color: rgba(74, 245, 255, 0.2);
  background: #10131d;
}

.results-table th,
.results-table td {
  border-bottom-color: rgba(126, 224, 235, 0.1);
}

.results-table tbody tr:hover {
  background: rgba(74, 245, 255, 0.055);
}

.results-table .leader th {
  color: var(--cyan);
}

.results-table td.best {
  color: #ffe29a;
  background: rgba(255, 209, 102, 0.14);
}

.results-table td.second-best {
  color: #9dd4ff;
  background: rgba(89, 103, 255, 0.13);
}

.results-table-wide {
  width: max-content;
  min-width: 100%;
  font-size: 0.76rem;
}

.results-table-wide th,
.results-table-wide td {
  min-width: 76px;
  padding: 9px 12px;
  white-space: nowrap;
}

.results-table-wide th:first-child,
.results-table-wide tbody th {
  position: sticky;
  left: 0;
  z-index: 2;
  min-width: 145px;
  background: #0b0e17;
  box-shadow: 1px 0 0 rgba(74, 245, 255, 0.16);
}

.results-table-wide thead th:first-child {
  z-index: 4;
  background: #10131d;
}

.results-table-wide thead tr:first-child th:not(:first-child) {
  color: #c4e6ec;
  border-left: 1px solid rgba(74, 245, 255, 0.13);
  text-align: center;
}

.results-table-wide tbody tr:hover th:first-child {
  background: #111a24;
}

@media (max-width: 1120px) {
  .affiliation-logos { display: none; }
  .hero-copy { top: 24px; }
  .fine-scene-grid-three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .hero-authors { font-size: 0.72rem; gap: 4px 11px; }
  .hero-copy { top: 10px; }
  .annotation-copy {
    display: block;
  }
  .annotation-copy .hierarchy-steps,
  .annotation-copy .class-chips { margin-top: 25px; }
  .hierarchy-figure { padding: 42px 8px 12px; }
  .scene-tabs { grid-template-columns: repeat(5, minmax(70px, 1fr)); overflow-x: auto; }
  .scene-tab { min-height: 66px; padding: 12px 10px; grid-template-columns: 1fr; gap: 5px; }
  .scene-panel { padding: 18px; }
  .fine-scene-grid,
  .fine-scene-grid-three,
  .fine-scene-grid-four { grid-template-columns: 1fr; }
  .fine-scene-card > div { grid-template-columns: auto 1fr; }
  .fine-scene-card small { grid-column: 2; }
  .footer-contact { justify-items: start; }
}

@media (max-width: 500px) {
  .nav-identity .brand { font-size: 0.95rem; }
  .scene-panel > header { align-items: flex-start; }
}

/* Final hero composition: navigation occupies its own row, while the hero
   height follows the native ERP aspect ratio plus the lower data strip. */
.site-header,
.site-header.is-scrolled {
  position: sticky;
  inset: 0 0 auto;
  color: #fff;
  background: rgba(5, 5, 10, 0.97);
  box-shadow: 0 1px 0 rgba(74, 245, 255, 0.18);
  backdrop-filter: blur(18px);
}

.hero {
  height: clamp(540px, 38.14vw, 900px);
  min-height: 540px;
}

.hero-content {
  padding-top: 10px;
  padding-bottom: 126px;
}

.hero-copy,
.hero-ai {
  top: -12px;
}

.hero-kicker {
  display: none;
}

.hero h1 {
  font-size: clamp(4.8rem, 8.5vw, 8.5rem);
  line-height: 0.88;
}

.hero-subtitle {
  margin-top: 20px;
  font-size: clamp(1.45rem, 2.45vw, 2.35rem);
  line-height: 1.12;
}

.hero-meta {
  max-width: 620px;
  margin-top: 14px;
  font-size: 0.94rem;
  line-height: 1.5;
}

.hero-authors {
  max-width: 700px;
  margin-top: 14px;
  gap: 3px 14px;
  font-size: 0.76rem;
  line-height: 1.34;
}

.author-note {
  margin-top: 4px;
  font-size: 0.61rem;
}

.hero-authors + .author-note + .hero-actions {
  margin-top: 15px;
}

.hero-actions .button {
  min-height: 44px;
  padding-inline: 18px;
  font-size: 0.84rem;
}

@media (max-width: 980px) {
  .hero {
    height: 620px;
    min-height: 620px;
  }

  .hero-content {
    min-height: 0;
    padding: 24px 0 140px;
  }
}

@media (max-width: 760px) {
  .site-header.is-open {
    color: #fff;
    background: #05050a;
  }

  .site-nav {
    color: #e8f7fb;
    background: #080a12;
  }

  .hero {
    height: auto;
    min-height: 820px;
  }

  .hero-content {
    min-height: 820px;
    padding: 54px 0 250px;
  }

  .hero h1 {
    font-size: clamp(3.8rem, 18vw, 5.7rem);
  }

  .hero-copy {
    top: 0;
  }
}