:root {
  --text: #222;
  --muted: #606060;
  --line: #dedede;
  --soft: #f6f6f6;
  --accent: #9a2f21;
  --link: #1756a9;
  --container: 900px;
  --wide: 1120px;
  --sans: Arial, Helvetica, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: #fff;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-underline-offset: 0.16em;
}

a:hover {
  color: var(--accent);
}

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

video {
  width: 100%;
  background: #111;
}

figure,
p {
  margin-top: 0;
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin-inline: auto;
}

.container.wide {
  width: min(var(--wide), calc(100% - 40px));
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10;
  padding: 8px 12px;
  color: #fff;
  background: #111;
  transform: translateY(-160%);
}

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

.lab-back {
  position: absolute;
  top: 20px;
  left: max(20px, calc((100% - var(--wide)) / 2));
  z-index: 2;
  display: inline-flex;
  padding: 7px 11px;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 650;
  line-height: 1.2;
  text-decoration: none;
}

.lab-back:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.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;
}

.hero {
  padding: 72px 0 44px;
  text-align: center;
}

h1 {
  max-width: 980px;
  margin: 0 auto 24px;
  font-size: clamp(2.15rem, 5vw, 3.65rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.project-name {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 1.12em;
  font-weight: 750;
}

.authors {
  display: flex;
  margin-bottom: 5px;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 34px;
  color: var(--link);
  font-size: 1.17rem;
}

.affiliation {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.venue {
  margin-bottom: 25px;
  color: var(--muted);
  font-size: 0.9rem;
}

.venue a {
  color: var(--text);
  font-weight: 650;
  text-decoration: none;
}

.venue a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.resource-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.resource-link {
  display: inline-flex;
  min-height: 39px;
  padding: 8px 16px;
  align-items: center;
  gap: 6px;
  color: #fff;
  background: #333;
  border: 1px solid #333;
  border-radius: 4px;
  font-size: 0.88rem;
  font-weight: 650;
  line-height: 1.15;
  text-decoration: none;
}

a.resource-link:hover {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.section {
  padding: 42px 0;
}

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

.teaser {
  padding-top: 24px;
  border-top: 0;
}

.teaser figure {
  margin: 0;
}

.teaser video {
  border-radius: 4px;
}

figcaption {
  padding-top: 10px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
  text-align: left;
}

h2 {
  margin: 0 0 18px;
  font-size: clamp(1.7rem, 3vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  text-align: center;
}

h3 {
  margin: 0 0 6px;
  font-size: 1.03rem;
  line-height: 1.35;
}

.method-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 40px;
}

.method-list article {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.method-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

.paper-figure {
  margin: 34px 0 0;
}

.paper-figure img {
  width: 100%;
  height: auto;
  background: #fff;
  border: 1px solid var(--line);
}

.results-list {
  padding-left: 1.3em;
  margin: 22px 0;
}

.results-list li {
  margin: 8px 0;
}

.limitation {
  padding: 14px 17px;
  margin-bottom: 0;
  background: var(--soft);
  border-left: 3px solid var(--accent);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 24px;
}

.video-grid figure {
  margin: 0;
}

.citation-note {
  color: var(--muted);
  text-align: center;
}

.citation-box {
  position: relative;
}

pre {
  padding: 20px;
  margin: 0;
  overflow-x: auto;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 0.82rem;
  line-height: 1.55;
}

#copy-citation {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 7px 10px;
  color: #fff;
  background: #333;
  border: 0;
  border-radius: 3px;
  font: inherit;
  font-size: 0.75rem;
  cursor: pointer;
}

#copy-citation:hover {
  background: var(--accent);
}

.copy-status {
  min-height: 1.4em;
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.acknowledgments p {
  margin-bottom: 0;
  text-align: center;
}

footer {
  padding: 25px 0;
  color: var(--muted);
  background: var(--soft);
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.footer-content p {
  margin: 0;
}

:focus-visible {
  outline: 3px solid #e3a417;
  outline-offset: 3px;
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .container,
  .container.wide {
    width: min(100% - 28px, var(--container));
  }

  .hero {
    padding: 78px 0 30px;
  }

  .lab-back {
    top: 16px;
    left: 14px;
  }

  .section {
    padding: 34px 0;
  }

  .method-list,
  .video-grid {
    grid-template-columns: 1fr;
  }

  .method-list {
    gap: 0;
  }

  .video-grid {
    gap: 30px;
  }

  .footer-content {
    align-items: center;
    flex-direction: column;
    text-align: center;
  }
}

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