:root {
  --text: #222222;
  --muted: #60656b;
  --link: #2767a8;
  --border: #dcdfe3;
  --light: #f6f7f8;
  --width: 1040px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 74px; }
body {
  margin: 0;
  color: var(--text);
  background: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
img { display: block; max-width: 100%; height: auto; }
video { display: block; max-width: 100%; height: auto; background: #000000; }

/*
 * Reserve intrinsic space for every result video so the page height is stable
 * before media loads, preventing reflow that would break smooth-scroll anchors.
 * All composited slide videos are 2000x1124.
 */
.result-video video { aspect-ratio: 500 / 281; }
a { color: var(--link); text-underline-offset: 3px; }
.page-container { width: min(calc(100% - 40px), var(--width)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: min(calc(100% - 40px), var(--width));
  min-height: 58px;
  margin-inline: auto;
}
.brand { color: var(--text); font-size: 18px; font-weight: 700; text-decoration: none; }
nav { display: flex; gap: 26px; }
nav a { color: #3b3d40; font-size: 14px; text-decoration: none; }
nav a:hover { color: var(--link); }

.hero { padding-block: 70px 44px; text-align: center; }
h1 {
  max-width: 1000px;
  margin: 0 auto 25px;
  font-size: clamp(32px, 4.6vw, 50px);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: -0.02em;
}
.authors {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 3px 20px;
  margin-bottom: 9px;
  font-size: 16px;
}
.authors a { text-decoration: none; }
.authors a:hover { text-decoration: underline; }
.affiliations { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }
.venue { margin: 14px 0 22px; font-weight: 600; }
.link-row { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; }
.project-link {
  display: inline-block;
  padding: 7px 14px;
  color: var(--link);
  background: white;
  border: 1px solid var(--link);
  border-radius: 3px;
  font-size: 14px;
  text-decoration: none;
}
.project-link.disabled { color: #6f7479; border-color: #aeb3b8; cursor: default; }

.teaser-section { padding-block: 0 20px; }
.teaser-section figure { margin-bottom: 0; }

.content-section {
  padding-block: 66px;
  border-top: 1px solid var(--border);
}
h2 {
  margin: 0 0 32px;
  color: var(--text);
  font-size: 32px;
  font-weight: 600;
  line-height: 1.25;
  text-align: center;
}
h3 {
  margin: 0 0 13px;
  color: var(--text);
  font-size: 23px;
  font-weight: 600;
  line-height: 1.3;
}
figure { margin: 0 0 44px; }
figure > img { width: 100%; }
figure > video { width: 100%; }
figcaption {
  max-width: 940px;
  margin: 13px auto 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
  text-align: left;
}
.paper-text { max-width: 900px; margin-inline: auto; }
.paper-text p { margin: 0 0 18px; text-align: justify; }
.paper-text p:last-child { margin-bottom: 0; }
#overview h2:not(:first-child) { margin-top: 60px; }

.method-steps { max-width: 900px; margin: 0 auto; padding-left: 22px; }
.method-steps li { margin-bottom: 10px; text-align: justify; }
.method-steps li:last-child { margin-bottom: 0; }

.experiment {
  max-width: 940px;
  margin: 0 auto;
  padding: 40px 0;
  border-top: 1px solid var(--border);
}
.experiment:first-of-type { border-top: 0; padding-top: 0; }
.experiment p { margin: 0 0 22px; text-align: justify; }
.experiment figure { margin: 26px 0 0; }
.comparison-legend {
  margin: 0 auto 14px;
  max-width: 900px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}
.video-stack { display: grid; gap: 18px; }
.result-video video {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 3px;
}

.metric-highlight {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  max-width: 900px;
  margin: 0 auto 6px;
}
.metric-card {
  flex: 1 1 200px;
  min-width: 180px;
  padding: 18px 16px;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-align: center;
}
.metric-card .num { display: block; font-size: 26px; font-weight: 700; color: var(--link); }
.metric-card .lbl { display: block; margin-top: 4px; font-size: 13px; color: var(--muted); line-height: 1.4; }

.citation-block { position: relative; max-width: 850px; margin: 0 auto; }
.citation-block pre {
  overflow-x: auto;
  margin: 0;
  padding: 52px 24px 24px;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: 3px;
  font: 13px/1.7 "Courier New", monospace;
}
.copy-button {
  position: absolute;
  top: 11px;
  right: 11px;
  padding: 5px 9px;
  color: var(--link);
  background: white;
  border: 1px solid var(--link);
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
}
.copy-button:hover { color: white; background: var(--link); }

.site-footer { padding-block: 28px; color: var(--muted); background: var(--light); border-top: 1px solid var(--border); }
.site-footer .page-container { display: flex; justify-content: space-between; gap: 24px; }
.site-footer p { margin: 0; font-size: 12px; }

@media (max-width: 700px) {
  .page-container, .nav-container { width: min(calc(100% - 28px), var(--width)); }
  nav { gap: 14px; }
  nav a { font-size: 12px; }
  .hero { padding-block: 50px 36px; }
  h1 { font-size: 30px; }
  .content-section { padding-block: 50px; }
  h2 { font-size: 27px; }
  h3 { font-size: 20px; }
  .paper-text p, .experiment p, .method-steps li { text-align: left; }
  .site-footer .page-container { flex-direction: column; gap: 3px; }
}

@media (max-width: 480px) {
  .brand { display: none; }
  .nav-container { justify-content: center; }
  nav { width: 100%; justify-content: space-between; }
  h1 { font-size: 26px; }
}