:root {
  color-scheme: light;
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-tint: #fbfaf8;
  --surface-soft: #f7f7f7;
  --router-media-max: 896px;
  --top-media-gap: 1.15rem;
  --ink: #171717;
  --muted: #5f646b;
  --line: rgba(20, 24, 30, 0.14);
  --line-soft: rgba(20, 24, 30, 0.08);
  --accent: #8c1515;
  --accent-dark: #641010;
  --green: #2f6f5e;
  --gold: #b98422;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
}

img,
video,
picture {
  display: block;
}

img,
video {
  width: 100%;
  height: auto;
}

video {
  background: #050505;
}

a {
  color: inherit;
}

.section {
  padding: 4.25rem 1.25rem;
  border-top: 1px solid var(--line);
}

.hero {
  padding-top: 5rem;
  padding-bottom: 3.5rem;
  border-top: 0;
}

.wrap {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.hero > .wrap {
  width: min(1280px, 100%);
}

.narrow {
  width: min(880px, 100%);
}

.abstract-wrap {
  width: min(80%, var(--router-media-max));
  text-align: left;
}

.hero-wrap {
  text-align: center;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p,
figure {
  margin-top: 0;
}

h1 {
  margin-bottom: 0.55rem;
  color: var(--accent);
  font-size: 4.8rem;
  font-weight: 850;
  line-height: 0.98;
  letter-spacing: 0;
}

.subtitle {
  width: 100%;
  margin: 0 auto 1rem;
  color: var(--ink);
  font-size: 1.48rem;
  font-weight: 700;
  line-height: 1.25;
  white-space: nowrap;
}

.authors {
  width: min(820px, 100%);
  margin: 0 auto 0.35rem;
  color: var(--ink);
  font-size: 1.18rem;
  font-weight: 600;
  line-height: 1.5;
}

.authors sup {
  color: var(--accent-dark);
  font-weight: 800;
}

.authors a {
  color: var(--green);
  text-decoration-line: underline;
  text-decoration-color: rgba(47, 111, 94, 0.48);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
  text-decoration-skip-ink: none;
  transition: color 0.2s ease-in-out, text-decoration-color 0.2s ease-in-out;
}

.authors a:hover {
  color: var(--accent-dark);
  text-decoration-color: currentColor;
}

.affiliation {
  margin: 0 0 0.5rem;
}

.affiliation-logo {
  width: auto;
  height: 40px;
  margin: 0.35rem auto 0;
}

.author-notes {
  margin: 0 0 0.2rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.author-notes sup {
  color: var(--accent-dark);
  font-weight: 800;
}

.author-notes .note-gap {
  display: inline-block;
  width: 1.4rem;
}

.paper-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.7rem;
  margin: 1.15rem 0 2rem;
}

.button {
  appearance: none;
  transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out,
    border-color 0.2s ease-in-out;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-width: 10em;
  height: calc(2.75em + 6px);
  padding: 0 1.5em;
  border: solid 3px #efefef;
  border-radius: 0.35em;
  background-color: transparent;
  color: #787878 !important;
  cursor: pointer;
  font-size: 0.98rem;
  font-weight: 400;
  line-height: 1;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
}

.button:hover {
  border-color: #49bf9d;
  color: #49bf9d !important;
}

.button:active {
  border-color: #49bf9d;
  background-color: rgba(73, 191, 157, 0.1);
  color: #49bf9d !important;
}

.button .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.05em;
  height: 1.05em;
  line-height: 1;
}

.button .icon .fa,
.button .icon .ai {
  display: block;
  line-height: 1;
}

.lead {
  width: min(920px, 100%);
  margin: 0 auto 1.45rem;
  color: var(--ink);
  font-size: 1.18rem;
  font-weight: 650;
}

.hero-teaser {
  width: min(80%, var(--router-media-max));
  margin: 0 auto var(--top-media-gap);
}

.hero-teaser video,
.hero-teaser img {
  background: #ffffff;
}

.hero-teaser-parts {
  width: min(80%, var(--router-media-max));
  margin: 0 auto var(--top-media-gap);
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.hero-teaser-part {
  margin: 0;
}

.hero-teaser-part video {
  background: #ffffff;
}

.hero-carousel {
  position: relative;
}

.hero-carousel-viewport {
  overflow: hidden;
  aspect-ratio: 8 / 3;
  background: #ffffff;
  cursor: grab;
  touch-action: pan-y;
  user-select: none;
}

.hero-carousel-viewport:active {
  cursor: grabbing;
}

.hero-carousel-viewport:focus-visible {
  outline: 3px solid rgba(47, 111, 94, 0.38);
  outline-offset: 3px;
}

.hero-carousel-track {
  display: flex;
  height: 100%;
  transform: translate3d(0, 0, 0);
  transition: transform 0.34s ease;
  will-change: transform;
}

.hero-carousel.is-dragging .hero-carousel-track {
  transition: none;
}

.hero-carousel-slide {
  flex: 0 0 50%;
  min-width: 50%;
  height: 100%;
  opacity: 0.38;
  transition: opacity 0.24s ease-in-out;
}

.hero-carousel-slide.is-active {
  opacity: 1;
}

.hero-carousel-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #ffffff;
  pointer-events: none;
}

.hero-carousel-control {
  appearance: none;
  position: absolute;
  top: 50%;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.45rem;
  height: 2.45rem;
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 999px;
  background: rgba(20, 24, 30, 0.6);
  color: #ffffff;
  cursor: pointer;
  transform: translateY(-50%);
  transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out;
}

.hero-carousel-control:hover {
  background: rgba(20, 24, 30, 0.78);
}

.hero-carousel-control:active {
  transform: translateY(-50%) scale(0.96);
}

.hero-carousel-control.prev {
  left: 0.8rem;
}

.hero-carousel-control.next {
  right: 0.8rem;
}

.hero-carousel-dots {
  position: absolute;
  right: 0;
  bottom: 0.85rem;
  left: 0;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: 0.45rem;
  pointer-events: none;
}

.hero-carousel-dot {
  appearance: none;
  width: 0.52rem;
  height: 0.52rem;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 999px;
  background: rgba(20, 24, 30, 0.34);
  cursor: pointer;
  pointer-events: auto;
}

.hero-carousel-dot.is-active {
  background: #ffffff;
}

.technical-video-frame {
  width: min(80vw, var(--router-media-max));
}

h2 {
  margin-bottom: 1rem;
  color: var(--ink);
  font-size: 2.35rem;
  font-weight: 820;
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.45rem;
  color: var(--ink);
  font-size: 1.16rem;
  font-weight: 800;
  line-height: 1.25;
}

h4 {
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

p {
  margin-bottom: 1rem;
}

.abstract {
  margin-bottom: var(--top-media-gap);
  color: var(--ink);
  font-size: 1.02rem;
}

#simulation,
.long-horizon {
  background: var(--surface-tint);
}

.section-intro {
  width: min(900px, 100%);
  margin-bottom: 1.75rem;
  color: var(--muted);
  font-size: 1.03rem;
}

.media-frame {
  margin: 0 0 2rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.hero-figure {
  margin-bottom: 0;
}

.media-frame img {
  background: #ffffff;
}

.media-frame figcaption {
  padding: 0.85rem 1rem 1rem;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
  text-align: left;
}

.media-frame.technical-video-frame {
  margin: 0 0 0 50%;
  transform: translateX(-50%);
  border: 0;
  border-radius: 0;
  background: transparent;
}

.technical-video-frame video {
  background: var(--bg);
  filter: brightness(1.006);
}

.summary-grid,
.question-grid,
.figure-grid,
.real-figure-stack,
.task-video-stack,
.failure-grid {
  display: grid;
  gap: 1rem;
}

.summary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 1rem;
}

.summary-grid article,
.question-block {
  min-height: 100%;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.summary-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.5;
}

.result-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin: 0 0 2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line-soft);
}

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

.result-band div {
  background: var(--surface);
  padding: 1.2rem 1rem;
  text-align: center;
}

.number {
  display: block;
  color: var(--accent);
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
}

.label {
  display: block;
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 760;
}

.section-rule {
  width: min(240px, 42%);
  height: 1px;
  margin: 0 auto 2rem;
  background: var(--line-soft);
}

.question-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0 0 2rem;
}

.question-label {
  margin-bottom: 0.25rem;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.question-block h3 {
  margin-bottom: 0.9rem;
}

.task-kicker {
  margin-bottom: 0.25rem;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.finding-line {
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.48;
}

.finding-line strong {
  color: var(--ink);
}

.analysis-title {
  margin: 0 0 1rem;
  font-size: 1.55rem;
  text-align: center;
}

.table-wrap {
  overflow-x: auto;
  border-top: 1px solid var(--line-soft);
  padding-top: 0.65rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  line-height: 1.35;
}

th,
td {
  padding: 0.42rem 0.35rem;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.emphasis-row td {
  color: var(--ink);
  font-weight: 850;
}

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

.figure-grid.half .media-frame picture {
  width: 50%;
  margin-inline: auto;
}

.real-world-headline {
  width: min(980px, 100%);
  margin-bottom: 1.5rem;
  font-size: 1.55rem;
}

.real-figure-stack {
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  margin: 0 0 2rem;
}

.real-task-card {
  margin: 0;
}

.real-task-card figcaption {
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 900;
  text-align: center;
}

.task-block {
  padding: 2.5rem 0 0;
  border-top: 1px solid var(--line);
}

.task-block + .task-block {
  margin-top: 2.75rem;
}

.task-header {
  width: min(920px, 100%);
  margin-bottom: 1rem;
}

.task-header h3 {
  margin-bottom: 0.55rem;
  font-size: 1.55rem;
}

.task-header p {
  margin-bottom: 0;
  color: var(--muted);
}

.task-video-stack {
  grid-template-columns: minmax(0, 1fr);
  justify-items: center;
  gap: 1.35rem;
}

.task-video-stack + .section-rule {
  margin-top: 1.6rem;
}

.task-video-card {
  width: min(80%, var(--router-media-max));
  margin: 0;
}

.failure-section {
  margin-top: 0;
}

.failure-title {
  margin-bottom: 1rem;
  font-size: 1.55rem;
}

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

.failure-grid .media-frame {
  margin-bottom: 0;
}

.long-horizon-headline {
  width: min(1040px, 100%);
  margin: 0 0 1.5rem;
  color: var(--ink);
  font-size: 1.45rem;
  font-weight: 820;
  line-height: 1.28;
}

.cleanup-sync-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.777fr) minmax(0, 1.161fr);
  gap: 1rem;
  align-items: stretch;
}

.cleanup-sync-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.cleanup-task-panel {
  aspect-ratio: 16 / 9;
}

.cleanup-weight-panel {
  aspect-ratio: 1254 / 1080;
}

.cleanup-sync-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #ffffff;
}

.baseline-title {
  padding: 0.75rem 0.95rem;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 900;
  line-height: 1.2;
  text-align: center;
}

.footer {
  padding: 2rem 1.25rem 2.5rem;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  text-align: center;
}

.footer p {
  margin: 0;
  font-size: 0.92rem;
}

@media (max-width: 980px) {
  body {
    font-size: 16px;
  }

  .wrap,
  .hero > .wrap {
    max-width: calc(100vw - 2rem);
  }

  h1 {
    font-size: 3rem;
  }

  .subtitle {
    font-size: 0.95rem;
  }

  .section {
    padding: 3.25rem 1rem;
  }

  .summary-grid,
  .question-grid,
  .figure-grid.two,
  .real-figure-stack,
  .task-video-stack,
  .cleanup-sync-grid,
  .failure-grid,
  .result-band,
  .result-band.two {
    grid-template-columns: 1fr;
  }

  .figure-grid.half .media-frame picture {
    width: 100%;
  }

  .media-frame {
    margin-bottom: 1.25rem;
  }

  .hero-teaser,
  .hero-teaser-parts {
    width: 100%;
  }

  .media-frame.technical-video-frame {
    width: 100%;
    margin: 0;
    transform: none;
  }

  .abstract-wrap,
  .task-video-card {
    width: 100%;
  }
}

@media (max-width: 520px) {
  h1 {
    max-width: 100%;
    font-size: 1.6rem;
    line-height: 1.08;
  }

  h2 {
    font-size: 1.85rem;
  }

  .subtitle {
    font-size: 0.78rem;
    white-space: normal;
  }

  .number {
    font-size: 2.4rem;
  }

  .media-frame figcaption {
    font-size: 0.86rem;
  }

}

@media (max-width: 360px) {
  h1 {
    font-size: 1.45rem;
  }

  .subtitle {
    font-size: 0.72rem;
  }
}