:root {
  color-scheme: light;
  --text: #222;
  --muted: #626971;
  --border: #d9dee4;
  --link: #1772d0;
  --caption: #d0d5ec;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding: 0 clamp(16px, 4vw, 58px);
  background: #fff;
  color: var(--text);
  font: 15px/1.65 Arial, Helvetica, sans-serif;
}
button, select, input { font: inherit; }
button { cursor: pointer; }
img, video { max-width: 100%; }
a { color: var(--link); }
:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }
.visually-hidden {
  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 {
  position: fixed; top: -50px; left: 12px; z-index: 10;
  padding: 7px 12px; background: #fff; border: 1px solid var(--border);
}
.skip-link:focus { top: 10px; }

.paper-header {
  max-width: 1230px;
  margin: 48px auto 30px;
  text-align: center;
}
.paper-header h1 {
  margin: 0 auto 20px;
  font-size: clamp(27px, 3vw, 38px);
  font-weight: 500;
  line-height: 1.28;
  letter-spacing: -.025em;
}
.paper-header h1 strong { font-weight: 750; }
.paper-authors {
  max-width: 1020px;
  margin: 0 auto 10px;
  font-size: clamp(16px, 1.65vw, 19px);
  line-height: 1.85;
}
.paper-authors span { white-space: nowrap; }
.paper-authors a { color: var(--link); text-decoration: none; }
.paper-authors a:hover, .paper-authors a:focus-visible { text-decoration: underline; text-underline-offset: 3px; }
.paper-authors sup, .paper-affiliations sup { margin-left: 1px; font-size: .7em; }
.paper-affiliations {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  column-gap: 24px;
  row-gap: 2px;
  margin: 0 auto 4px;
  color: var(--muted);
  font-size: 15px;
}
.paper-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 22px auto 0;
}
.paper-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 7px 15px;
  border: 1px solid #245d8a;
  border-radius: 5px;
  background: #245d8a;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
}
a.paper-link:hover { background: #17496f; border-color: #17496f; }
.paper-link-pending { border-color: #cbd2d9; background: #f4f6f8; color: #59636d; cursor: default; }
.paper-tldr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  max-width: 1000px;
  margin: 22px auto 0;
  padding: 17px 20px;
  border: 1px solid #c8d7e8;
  border-top: 4px solid #2e6c98;
  border-radius: 6px;
  background: #f4f8fc;
  box-shadow: 0 2px 8px rgb(26 60 100 / 7%);
  text-align: center;
}
.tldr-badge {
  flex: 0 0 auto;
  padding: 3px 9px;
  border-radius: 3px;
  background: #245d8a;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.6;
}
.paper-tldr p { max-width: 860px; margin: 0; color: #263442; font-size: 16px; line-height: 1.6; }
h2, h3, p { margin-top: 0; }
h2 {
  margin-bottom: 18px;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  text-align: left;
}
h3 { line-height: 1.3; }
.content-section {
  max-width: 1500px;
  margin: 0 auto;
  padding: 34px 0 60px;
}
.overview-section { padding-top: 26px; }
.overview-section > h2 { max-width: 1100px; margin-left: auto; margin-right: auto; }
.method-figure {
  max-width: 1100px;
  margin: 0 auto;
}
.method-image-wrap { overflow-x: auto; }
.method-figure img {
  display: block;
  width: 100%;
  height: auto;
}
.method-figure figcaption {
  margin-top: 9px;
  padding: 10px 15px;
  border-radius: 4px;
  background: var(--caption);
  color: #20232a;
  font-size: 14px;
  line-height: 1.55;
  text-align: center;
}
.abstract-section {
  max-width: 1000px;
  margin: 58px auto 0;
}
.abstract-section p {
  margin: 0;
  text-align: justify;
  line-height: 1.75;
}
.method-section-heading { margin-top: 56px; }

.gallery-section, .metrics-section { border-top: 1px solid #e5e5e5; }
.section-heading { margin: 0 0 26px; }
.section-heading h2 { margin-bottom: 10px; }
.heading-note {
  margin: 0;
  color: #464c52;
  text-align: left;
  line-height: 1.6;
}
.gallery-shell { width: 100%; }
.gallery-status { margin: 0 0 15px; color: #626971; font-size: 13px; }
.scene-panels { display: grid; gap: 28px; }
.scene-panel { min-width: 0; padding: 20px 0 25px; border-top: 1px solid var(--border); }
.scene-panel:first-child { padding-top: 0; border-top: 0; }
.scene-panel-top { position: relative; margin-bottom: 18px; }
.panel-play-state { position: absolute; top: 3px; right: 0; color: #67727a; font-size: 12px; }
.panel-play-state.is-playing { color: #26734e; }
.scene-navigation { display: flex; flex-direction: column; align-items: flex-start; gap: 7px; width: min(520px, 100%); }
.scene-fields, .scene-fields label, .scene-fields select { width: 100%; min-width: 0; }
.scene-fields label { display: flex; flex-direction: column; gap: 9px; color: #222; font-size: 20px; font-weight: 700; line-height: 1.4; }
.scene-fields select {
  height: 36px;
  padding: 5px 8px;
  border: 1px solid #bfc6cd;
  border-radius: 3px;
  background: #fff;
  color: #222;
  font-size: 12px;
  font-weight: 400;
}
.scene-select-row { display: flex; align-items: center; justify-content: flex-start; gap: 6px; }
.scene-heading { min-width: 0; margin-bottom: 16px; }
.scene-heading h3 { margin: 0 0 2px; font-size: 19px; font-weight: 650; }
.icon-button {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid #bfc6cd;
  border-radius: 3px;
  background: #f7f8f9;
  color: #303943;
  font-size: 18px;
  line-height: 1;
}
.icon-button:hover { background: #eef3f9; }
.scene-count { color: #737d85; font-size: 11px; }
.scroll-hint { display: none; margin: 0 0 8px; color: #6b747d; font-size: 12px; }
.comparison-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-color: #b8c2cd #f1f3f5;
  scrollbar-width: thin;
}
.comparison-stack { min-width: 1240px; padding-bottom: 10px; }
.comparison-row {
  display: grid;
  grid-template-columns: repeat(7, minmax(170px, 1fr));
  gap: 7px;
  align-items: start;
}
.comparison-row-title {
  margin: 15px 0 7px;
  padding-top: 10px;
  border-top: 1px solid #e2e5e8;
  color: #303943;
  font-size: 14px;
  line-height: 1.3;
}
.comparison-row-title:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.video-card { border: 1px solid #cfd5db; background: #fff; }
.video-card-ours { border-color: #3e946d; border-width: 2px; }
.video-label {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 34px;
  padding: 0 8px;
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
}
.method-number { color: #868f98; font-size: 10px; font-weight: 400; }
.video-card-ours .video-label { color: #26734e; }
.video-viewport { position: relative; height: 180px; background: #111; }
.video-viewport video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #111;
}
.video-error {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 12px;
  background: #333;
  color: #fff;
  text-align: center;
  font-size: 12px;
}
.video-error[hidden] { display: none; }
.mesh-card .video-viewport { height: 180px; background: #fff; }
.mesh-card video { background: #fff; }
.hand-error-card .video-viewport { height: 110px; background: #fff; }
.hand-error-card video { background: #fff; }
.row-spacer { min-height: 1px; }
.mesh-note { margin: 2px 0 10px; color: #626971; font-size: 12px; }
.hand-error-legend { margin: 9px 0 14px; }
.hand-error-legend p { margin: 0 0 6px; color: #4e5861; font-size: 12px; line-height: 1.5; }
.colorbar-wrap { max-width: 760px; margin: 8px auto 0; }
.colorbar-wrap img { display: block; width: 100%; height: auto; }
.hand-error-legend .colorbar-note { max-width: 760px; margin: 4px auto 0; color: #626971; text-align: center; }
.playback-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 0 0;
  border-top: 1px solid var(--border);
}
.play-button, .replay-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 5px 11px;
  border: 1px solid #bfc6cd;
  border-radius: 3px;
  background: #f7f8f9;
  color: #222;
  white-space: nowrap;
  font-size: 12px;
}
.play-button:hover, .replay-button:hover { background: #eef3f9; }
.timeline { width: 100%; min-width: 50px; accent-color: var(--link); cursor: pointer; }
.time-display {
  min-width: 70px;
  color: #4e5861;
  text-align: right;
  white-space: nowrap;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.playback-status { min-height: 18px; margin: 5px 0 0; color: #9a421f; font-size: 12px; }

.metric-block { margin: 29px 0 0; }
.metric-block-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 5px 25px;
  margin-bottom: 8px;
}
.metric-block-heading h3 { margin: 0; font-size: 19px; font-weight: 700; }
.table-scroll { overflow-x: auto; border: 1px solid var(--border); }
.metrics-table {
  width: 100%;
  min-width: 1100px;
  border-collapse: collapse;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.metrics-table caption {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap;
}
.metrics-table th, .metrics-table td { padding: 8px 10px; text-align: center; white-space: nowrap; }
.metrics-table thead { background: #f0f2f4; }
.metrics-table thead th { font-weight: 700; }
.metrics-table .group-row th { text-align: center; }
.metrics-table .group-row th:first-child { text-align: left; }
.metrics-table thead tr:last-child { border-bottom: 1px solid #abb4bc; }
.metrics-table tbody tr { border-bottom: 1px solid #e2e5e8; }
.metrics-table tbody tr:last-child { border-bottom: 0; }
.metrics-table tbody th { text-align: left; font-weight: 600; }
.metrics-table .ours-row { background: #f6f8f6; }
.metrics-table .best { font-weight: 750; }
.metrics-table .second { text-decoration: underline; text-underline-offset: 2px; }
@media (max-width: 1250px) {
  .comparison-stack { min-width: 1316px; }
  .comparison-row { grid-template-columns: repeat(7, 182px); }
  .scroll-hint { display: block; }
}
@media (max-width: 800px) {
  .paper-header { margin-top: 32px; }
  .content-section { padding: 28px 0 48px; }
}
@media (max-width: 550px) {
  body { padding: 0 14px; }
  .paper-header h1 { font-size: 26px; }
  .paper-tldr { gap: 8px; padding: 14px 16px; }
  .paper-tldr p { font-size: 15px; }
  .abstract-section p { text-align: left; }
  .video-viewport, .mesh-card .video-viewport { height: 165px; }
  .replay-button span { display: none; }
  .playback-toolbar { gap: 6px; }
  .time-display { min-width: 63px; font-size: 11px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}