:root {
  --paper: #f2f4ef;
  --white: #ffffff;
  --ink: #131715;
  --muted: #626963;
  --line: #d9ded8;
  --green: #4cab6a;
  --green-dark: #194d33;
  --yellow: #f2cf57;
  --coral: #e96e5a;
  --blue: #4d70d1;
  --max-width: 1200px;
  --toc-width: 176px;
  --toc-gap: 48px;
  --toc-space: calc(var(--toc-width) + var(--toc-gap));
  --header-height: 72px;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
select {
  font: inherit;
}

button {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--white);
  border: 1px solid var(--ink);
  transform: translateY(-160%);
}

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

.page-shell {
  width: calc(100% - 48px);
  max-width: var(--max-width);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(19, 23, 21, 0.12);
  backdrop-filter: blur(12px);
}

.site-header.is-scrolled {
  box-shadow: 0 8px 24px rgba(19, 23, 21, 0.08);
}

.header-inner {
  width: calc(100% - 48px);
  max-width: var(--max-width);
  height: 100%;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
}

.brand img {
  width: 216px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
}

.site-nav a {
  position: relative;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  background: var(--white);
  border: 1px solid rgba(19, 23, 21, 0.16);
  border-radius: 4px;
  color: #4e5550;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.site-nav a::after {
  display: none;
}

.site-nav a:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}

.section-nav {
  position: fixed;
  top: calc(var(--header-height) + 42px);
  left: max(24px, calc((100vw - var(--max-width)) / 2));
  z-index: 80;
  width: var(--toc-width);
  display: none;
  padding: 10px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(19, 23, 21, 0.12);
  border-radius: 6px;
  box-shadow: 0 12px 32px rgba(19, 23, 21, 0.08);
  backdrop-filter: blur(10px);
  color: #4e5550;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.25;
}

.section-nav::before {
  content: "";
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: 16px;
  width: 1px;
  background: rgba(19, 23, 21, 0.18);
}

.section-nav a {
  position: relative;
  display: block;
  padding: 9px 8px 9px 24px;
  border-radius: 4px;
  transition: background-color 160ms ease, color 160ms ease;
}

.section-nav a::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 4px;
  width: 5px;
  height: 5px;
  background: var(--ink);
  border-radius: 50%;
  opacity: 0;
  transform: translateY(-50%) scale(0.7);
  transition: opacity 160ms ease, transform 160ms ease;
}

.section-nav a:hover,
.section-nav a.is-active {
  color: var(--ink);
}

.section-nav a.is-active {
  background: var(--ink);
  color: var(--white);
}

.section-nav a.is-active::before {
  opacity: 1;
  transform: translateY(-50%) scale(1);
  background: var(--white);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 22px;
  cursor: pointer;
}

.hero {
  position: relative;
  height: calc(100svh - var(--header-height) - 74px);
  min-height: min(560px, calc(100svh - var(--header-height) - 74px));
  max-height: 758px;
  overflow: hidden;
  isolation: isolate;
  background: #111412;
  color: var(--white);
}

.hero-media,
.hero-scrim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  z-index: -2;
  object-fit: cover;
  object-position: center 49%;
}

.hero-scrim {
  z-index: -1;
  background: rgba(8, 11, 9, 0.52);
}

.hero-content {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding-top: 26px;
  padding-bottom: 54px;
}

.hero h1 {
  width: 100%;
  max-width: 920px;
  margin: 0;
  font-family: var(--serif);
  font-size: 80px;
  font-weight: 400;
  line-height: 1;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.hero-subtitle {
  width: 100%;
  max-width: 820px;
  margin: 18px 0 0;
  font-size: 25px;
  font-weight: 500;
  line-height: 1.25;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.hero-lead {
  width: 100%;
  max-width: 680px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 17px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.button span {
  font-size: 18px;
}

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

.button-primary:hover {
  background: var(--yellow);
  border-color: var(--yellow);
}

.button-quiet {
  background: rgba(11, 14, 12, 0.3);
  color: var(--white);
}

.button-quiet:hover {
  background: var(--white);
  color: var(--ink);
}

.metrics-band {
  background: var(--ink);
  color: var(--white);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.metric-item {
  --metric-line-offset: -18px;
  min-height: 104px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 14px 28px;
}

.metric-item::before,
.metric-item:last-child::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(255, 255, 255, 0.16);
  pointer-events: none;
}

.metric-item::before {
  left: var(--metric-line-offset);
}

.metric-item:last-child::after {
  right: calc(-1 * var(--metric-line-offset));
}

.metric-item strong {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 400;
  line-height: 1;
}

.metric-item span {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.section {
  padding: 104px 0;
}

@media (min-width: 1220px) {
  .section-nav.is-visible {
    display: block;
  }

  .metrics-band .page-shell,
  .section .page-shell {
    width: calc(100% - 48px - var(--toc-space));
    max-width: calc(var(--max-width) - var(--toc-space));
    margin-left: max(
      calc(24px + var(--toc-space)),
      calc((100vw - var(--max-width)) / 2 + var(--toc-space))
    );
    margin-right: auto;
  }
}

.section-heading {
  max-width: 900px;
  margin-bottom: 52px;
}

.section-heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 50px;
  font-weight: 400;
  line-height: 1.12;
}

.section-heading p {
  max-width: 820px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.58;
}

.section-heading.on-dark h2 {
  color: var(--white);
}

.section-heading.on-dark p {
  color: rgba(255, 255, 255, 0.72);
}

.overview-section,
.simulation-section,
.inference-section {
  background: var(--white);
}

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

.figure-frame {
  margin: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.figure-frame-light {
  border-color: rgba(255, 255, 255, 0.24);
}

.figure-button {
  width: 100%;
  position: relative;
  display: block;
  padding: 0;
  background: var(--white);
  border: 0;
  cursor: zoom-in;
}

.figure-button img {
  width: 100%;
  height: auto;
}

.figure-open {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink);
  font-size: 20px;
  box-shadow: 0 4px 14px rgba(19, 23, 21, 0.1);
}

.figure-frame figcaption,
.real-world-video figcaption {
  padding: 15px 18px;
  background: var(--white);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.teaser-figure {
  margin-top: 4px;
}

.contribution-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 54px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.contribution-grid article {
  min-height: 190px;
  padding: 30px 30px 32px 0;
  border-right: 1px solid var(--line);
}

.contribution-grid article + article {
  padding-left: 30px;
}

.contribution-grid article:last-child {
  padding-right: 0;
  border-right: 0;
}

.contribution-grid h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.3;
}

.contribution-grid p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.58;
}

.overview-outcome {
  max-width: 1000px;
  margin: 58px 0 0;
}

.overview-outcome p {
  max-width: 920px;
  margin: 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.58;
  text-align: left;
}

.overview-video-grid {
  max-width: 972px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin: 26px auto 0;
}

.overview-video-card {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.overview-video-stage {
  position: relative;
  background: #080a09;
}

.overview-video-stage video {
  width: 100%;
  aspect-ratio: 9 / 16;
  display: block;
  background: #080a09;
  object-fit: contain;
}

.overview-speed-badge {
  position: absolute;
  right: 144px;
  bottom: 34.5px;
  z-index: 2;
  height: 26px;
  display: flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.92);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0;
  opacity: 0;
  pointer-events: none;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.85);
  transition: opacity 250ms ease-in-out;
}

.overview-video-stage:hover .overview-speed-badge {
  opacity: 1;
}

.overview-video-card figcaption {
  min-height: 78px;
  display: flex;
  align-items: center;
  padding: 11px 12px;
  background: var(--white);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.3;
}

.task-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.task-card {
  min-height: 350px;
  display: flex;
  flex-direction: column;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.task-card h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 400;
  line-height: 1.2;
}

.task-card > p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}

.task-scores {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: auto;
  padding-top: 30px;
}

.task-scores > div {
  display: flex;
  flex-direction: column;
}

.task-scores strong {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
}

.task-scores span {
  margin-top: 8px;
  transform: translateX(21px);
  color: var(--muted);
  font-size: 16px;
  font-weight: 600;
}

.real-world-video {
  max-width: 1000px;
  margin: 70px auto 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.real-world-video-stage {
  position: relative;
  background: #080a09;
}

.real-world-video video {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: block;
  background: #080a09;
  object-fit: contain;
}

.video-speed-badge {
  position: absolute;
  right: 154px;
  bottom: 34.5px;
  z-index: 2;
  height: 24px;
  display: flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.92);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0;
  opacity: 0;
  pointer-events: none;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.85);
  transition: opacity 250ms ease-in-out;
}

.real-world-video-stage:hover .video-speed-badge {
  opacity: 1;
}

.video-selector {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.video-selector button {
  min-height: 52px;
  padding: 0 14px;
  background: var(--white);
  border: 0;
  border-right: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.video-selector button:last-child {
  border-right: 0;
}

.video-selector button:hover,
.video-selector button.is-active {
  background: var(--ink);
  color: var(--white);
}

.generalization-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 32px;
  align-items: center;
  margin-top: 46px;
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.generalization-panel h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 400;
  line-height: 1.18;
}

.generalization-panel p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}

.generalization-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-left: 1px solid var(--line);
}

.generalization-grid div {
  min-width: 0;
  padding: 8px 22px;
  border-right: 1px solid var(--line);
}

.generalization-grid div:last-child {
  border-right: 0;
}

.generalization-grid strong {
  display: block;
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 400;
  line-height: 1;
}

.generalization-grid span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.25;
}

.generalization-video-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.generalization-video-card {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.generalization-video-stage {
  position: relative;
  background: #080a09;
}

.generalization-video-stage video {
  width: 100%;
  aspect-ratio: 9 / 16;
  display: block;
  background: #080a09;
  object-fit: contain;
}

.generalization-speed-badge {
  position: absolute;
  right: 147px;
  bottom: 34.5px;
  z-index: 2;
  height: 24px;
  display: flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.92);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0;
  opacity: 0;
  pointer-events: none;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.85);
  transition: opacity 250ms ease-in-out;
}

.generalization-video-stage:hover .generalization-speed-badge {
  opacity: 1;
}

.generalization-video-card figcaption {
  min-height: 86px;
  display: grid;
  align-content: start;
  gap: 6px;
  padding: 11px 12px;
  background: var(--white);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.3;
}

.generalization-video-type {
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0;
}

.simulation-section {
  border-top: 1px solid var(--line);
}

.benchmark-chart-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.benchmark-chart-card {
  min-width: 0;
  padding: 30px 26px 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 16px 44px rgba(19, 23, 21, 0.05);
}

.benchmark-chart-card h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 400;
  line-height: 1.15;
}

.benchmark-plot {
  --chart-height: 220px;
  --value-height: 24px;
  --label-height: 42px;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  margin-top: 32px;
}

.plot-y-axis {
  height: calc(var(--chart-height) + var(--value-height) + var(--label-height));
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--value-height) 0 var(--label-height);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  text-align: right;
}

.plot-y-axis span {
  transform: translateY(-4px);
}

.plot-y-axis span:nth-last-child(-n + 2) {
  transform: translateY(1px);
}

.benchmark-bars {
  position: relative;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: stretch;
  gap: 8px;
  height: calc(var(--chart-height) + var(--value-height) + var(--label-height));
  margin: 0;
  padding: 0;
}

.benchmark-bars::before {
  content: "";
  position: absolute;
  top: var(--value-height);
  right: 0;
  bottom: var(--label-height);
  left: 0;
  background:
    linear-gradient(to bottom, rgba(19, 23, 21, 0.2) 0 1px, transparent 1px),
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent calc(25% - 1px),
      rgba(19, 23, 21, 0.12) calc(25% - 1px),
      rgba(19, 23, 21, 0.12) 25%
    );
  pointer-events: none;
}

.benchmark-plot-libero .benchmark-bars::before {
  background:
    linear-gradient(to bottom, rgba(19, 23, 21, 0.2) 0 1px, transparent 1px),
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent calc(33.333% - 1px),
      rgba(19, 23, 21, 0.12) calc(33.333% - 1px),
      rgba(19, 23, 21, 0.12) 33.333%
    );
}

.benchmark-bars li {
  --bar-color: #9ca39e;
  min-width: 0;
  height: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.benchmark-bars li.is-ours {
  --bar-color: var(--green-dark);
}

.benchmark-bars b,
.benchmark-bars span {
  min-width: 0;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
}

.benchmark-bars b {
  position: absolute;
  right: 0;
  bottom: calc(var(--label-height) + var(--bar) + 7px);
  left: 0;
  z-index: 2;
  font-family: var(--mono);
  color: var(--ink);
  font-size: 12px;
}

.benchmark-bars span {
  height: var(--label-height);
  padding-top: 9px;
  color: var(--muted);
  font-size: 10px;
  overflow-wrap: anywhere;
}

.benchmark-bars i {
  position: relative;
  z-index: 1;
  height: var(--bar);
  display: block;
  flex: 0 0 auto;
  overflow: hidden;
  background: var(--bar-color);
  border-radius: 5px 5px 0 0;
}

.data-section {
  background: #edf3ee;
}

.data-composition {
  display: flex;
  justify-content: center;
}

.data-figure {
  width: min(426px, 100%);
  height: auto;
  transform: translateX(-72px);
  mix-blend-mode: multiply;
}

.method-section {
  background: var(--ink);
  color: var(--white);
}

.method-architecture-figure {
  max-width: 900px;
  margin-right: auto;
  margin-left: max(0px, calc((100% - 900px) / 2 - 42px));
}

.training-block {
  margin-top: 76px;
  padding-top: 68px;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.training-block > header {
  max-width: 820px;
}

.training-block h3,
.simulator-intro h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 400;
  line-height: 1.2;
}

.training-block > header p,
.simulator-intro p {
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
  line-height: 1.58;
}

.stage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  margin-top: 46px;
}

.stage-grid article {
  padding-top: 24px;
  border-top: 3px solid var(--yellow);
}

.stage-grid h4 {
  margin: 0;
  font-size: 20px;
  line-height: 1.38;
}

.stage-grid p {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
  line-height: 1.55;
}

.inference-figure {
  max-width: 820px;
  margin-inline: auto;
}

.simulator-intro {
  max-width: 850px;
  margin-top: 88px;
}

.simulator-intro p {
  color: var(--muted);
}

.simulator-modes {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: 46px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.simulator-mode {
  min-width: 0;
  position: relative;
  padding: 38px 0 42px;
  text-align: center;
}

.simulator-mode + .simulator-mode {
  padding-right: 0;
  padding-left: 0;
  border-left: 0;
}

.simulator-mode + .simulator-mode::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: min(620px, 58%);
  height: 1px;
  background: var(--line);
  transform: translateX(-50%);
}

.simulator-mode h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 400;
  line-height: 1.2;
}

.simulator-mode > p {
  max-width: 720px;
  margin: 16px auto 0;
  color: var(--muted);
  font-size: 17px;
}

.mode-flow {
  display: grid;
  grid-template-columns: minmax(120px, 0.42fr) auto minmax(120px, 0.42fr);
  align-items: center;
  gap: 14px;
  max-width: 560px;
  margin: 28px auto 0;
}

.mode-flow span {
  min-height: 46px;
  display: grid;
  place-items: center;
  padding: 9px 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 5px;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
}

.mode-flow b {
  font-size: 19px;
}

.world-simulator-demo {
  display: grid;
  gap: 16px;
  max-width: 860px;
  margin: 30px auto 0;
}

.prompt-selector {
  position: relative;
  display: flex;
  gap: 10px;
  padding: 0 2px 8px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}

.prompt-selector button {
  flex: 0 0 min(280px, 78vw);
  min-height: 54px;
  padding: 12px 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.28;
  text-align: center;
  scroll-snap-align: start;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.prompt-selector button:hover,
.prompt-selector button.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}

.prompt-scroll-indicator {
  width: min(260px, 62%);
  height: 14px;
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr) 12px;
  align-items: center;
  gap: 9px;
  margin: -2px auto 0;
}

.prompt-scroll-indicator::before,
.prompt-scroll-indicator::after {
  content: "";
  width: 8px;
  height: 8px;
  border-top: 2px solid rgba(19, 23, 21, 0.5);
  border-left: 2px solid rgba(19, 23, 21, 0.5);
}

.prompt-scroll-indicator::before {
  transform: rotate(-45deg);
}

.prompt-scroll-indicator::after {
  justify-self: end;
  transform: rotate(135deg);
}

.prompt-scroll-indicator span {
  height: 4px;
  position: relative;
  display: block;
  overflow: hidden;
  background: rgba(19, 23, 21, 0.16);
  border-radius: 999px;
}

.prompt-scroll-indicator span::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--scroll-progress, 0%);
  width: var(--scroll-thumb-width, 42%);
  background: var(--ink);
  border-radius: inherit;
  transition: left 80ms linear, width 160ms ease;
}

.world-simulator-video {
  width: 100%;
  max-width: 780px;
  aspect-ratio: 16 / 9;
  display: block;
  margin-inline: auto;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 6px;
  object-fit: contain;
}

.imagination-section {
  background: var(--ink);
  color: var(--white);
}

.imagination-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  align-items: start;
  gap: 20px;
}

.site-footer {
  padding: 34px 0;
  background: var(--white);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.footer-inner p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.figure-dialog {
  width: min(1100px, calc(100vw - 96px));
  max-width: 1100px;
  height: fit-content;
  max-height: calc(100vh - 96px);
  margin: auto;
  padding: 0;
  overflow: hidden;
  background: #101311;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 6px;
  color: var(--white);
  transform-origin: center;
  will-change: opacity, transform;
}

.figure-dialog[open].is-closing {
  pointer-events: none;
}

.figure-dialog::backdrop {
  background: rgba(7, 9, 8, 0.86);
}

.figure-dialog[open]::backdrop {
  animation: figure-backdrop-in 420ms ease-out both;
}

.figure-dialog[open].is-closing::backdrop {
  animation: figure-backdrop-out 320ms ease-in both;
}

@keyframes figure-backdrop-in {
  from {
    background: rgba(7, 9, 8, 0);
  }

  to {
    background: rgba(7, 9, 8, 0.78);
  }
}

@keyframes figure-backdrop-out {
  from {
    background: rgba(7, 9, 8, 0.78);
  }

  to {
    background: rgba(7, 9, 8, 0);
  }
}

.dialog-toolbar {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px 0 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.dialog-toolbar p {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
}

.dialog-toolbar button {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0;
  background: transparent;
  border: 0;
  color: var(--white);
  font-size: 28px;
  cursor: pointer;
}

.dialog-canvas {
  width: 100%;
  max-height: calc(100vh - 152px);
  display: grid;
  place-items: center;
  overflow: auto;
  padding: 24px;
  cursor: zoom-out;
}

.dialog-canvas img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: calc(100vh - 200px);
  margin: auto;
  background: var(--white);
  object-fit: contain;
  user-select: none;
}

@media (max-width: 1100px) {
  .metric-item:last-child strong {
    font-size: 30px;
  }

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

  .generalization-panel {
    grid-template-columns: 1fr;
  }

  .generalization-grid {
    border-top: 1px solid var(--line);
    border-left: 0;
    padding-top: 22px;
  }

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

  .task-card {
    min-height: 320px;
  }
}

@media (max-width: 1020px) {
  .section-heading h2 {
    font-size: 44px;
  }

  .benchmark-chart-grid {
    grid-template-columns: 1fr;
  }

  .data-composition {
    justify-content: flex-start;
  }
}

@media (max-width: 1000px) {
  .metric-item:last-child strong {
    font-size: 27px;
  }
}

@media (max-width: 930px) {
  .metric-item:last-child strong {
    font-size: 25px;
  }
}

@media (max-width: 900px) {
  .site-header {
    height: 64px;
  }

  .header-inner {
    width: calc(100% - 32px);
  }

  .brand img {
    width: 196px;
  }

  .menu-button {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 64px;
    right: 0;
    left: 0;
    z-index: 90;
    height: calc(100svh - 64px);
    display: none;
    align-items: stretch;
    gap: 0;
    padding: 26px 20px;
    overflow-y: auto;
    background: var(--white);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav a {
    width: 100%;
    min-height: 48px;
    display: flex;
    padding: 0 14px;
    border-bottom: 0;
    font-size: 18px;
  }

  .site-nav a::after {
    display: none;
  }

  .hero {
    height: calc(100svh - 156px);
    min-height: min(560px, calc(100svh - 156px));
  }

  .simulator-modes {
    grid-template-columns: 1fr;
  }

  .simulator-mode,
  .simulator-mode + .simulator-mode {
    padding: 34px 0;
  }

  .simulator-mode + .simulator-mode {
    border-top: 0;
    border-left: 0;
  }
}

@media (max-width: 780px) {
  :root {
    --header-height: 64px;
  }

  .page-shell {
    width: calc(100% - 32px);
  }

  .hero h1 {
    font-size: 60px;
  }

  .hero-subtitle {
    font-size: 21px;
  }

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

  .metric-item {
    --metric-line-offset: 0px;
    min-height: 116px;
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .metric-item:nth-child(2n) {
    border-right: 1px solid rgba(255, 255, 255, 0.16);
  }

  .metric-item strong {
    font-size: 31px;
  }

  .metric-item:last-child strong {
    font-size: 31px;
  }

  .section {
    padding: 82px 0;
  }

  .section-heading {
    margin-bottom: 40px;
  }

  .section-heading h2 {
    font-size: 38px;
  }

  .section-heading p {
    margin-top: 20px;
    font-size: 18px;
  }

  .contribution-grid,
  .benchmark-chart-grid,
  .stage-grid,
  .imagination-grid {
    grid-template-columns: 1fr;
  }

  .contribution-grid article,
  .contribution-grid article + article {
    min-height: 0;
    padding: 26px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .contribution-grid article:last-child {
    border-bottom: 0;
  }

  .overview-video-grid {
    max-width: 380px;
    grid-template-columns: 1fr;
  }

  .training-block {
    margin-top: 72px;
    padding-top: 64px;
  }

  .training-block h3,
  .simulator-intro h3 {
    font-size: 34px;
  }

  .world-simulator-demo {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    justify-content: flex-start;
  }

  .figure-dialog {
    width: calc(100vw - 32px);
    max-height: calc(100svh - 32px);
  }

  .dialog-toolbar {
    display: none;
  }

  .dialog-canvas {
    max-height: calc(100svh - 32px);
    padding: 12px;
  }

  .dialog-canvas img {
    max-height: calc(100svh - 56px);
  }
}

@media (max-width: 520px) {
  .brand img {
    width: 164px;
  }

  .hero {
    height: min(620px, calc(100svh - 140px));
    min-height: 480px;
  }

  .hero-content {
    justify-content: flex-end;
    padding-bottom: 46px;
  }

  .hero h1 {
    font-size: 50px;
  }

  .hero-subtitle {
    font-size: 19px;
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-actions {
    margin-top: 22px;
  }

  .button {
    min-height: 42px;
    padding: 0 13px;
    font-size: 12px;
  }

  .metric-item {
    padding: 16px;
  }

  .metric-item strong {
    font-size: 28px;
  }

  .metric-item:last-child strong {
    font-size: 22px;
  }

  .metric-item span {
    font-size: 12px;
  }

  .section {
    padding: 68px 0;
  }

  .section-heading h2 {
    font-size: 34px;
  }

  .section-heading p {
    font-size: 17px;
  }

  .figure-open {
    width: 36px;
    height: 36px;
    top: 9px;
    right: 9px;
  }

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

  .generalization-panel {
    padding: 24px;
  }

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

  .generalization-grid div {
    padding: 0;
    border-right: 0;
  }

  .generalization-video-grid {
    grid-template-columns: 1fr;
  }

  .task-card {
    min-height: 0;
  }

  .benchmark-chart-card {
    padding: 26px 22px;
  }

  .mode-flow {
    grid-template-columns: 1fr;
  }

  .mode-flow b {
    transform: rotate(90deg);
    justify-self: center;
  }
}

@media (max-width: 380px) {
  .metric-item:last-child strong {
    font-size: 18px;
  }

  .task-scores strong {
    font-size: 32px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}