:root {
  --ink: #171717;
  --muted: #5f656d;
  --line: #d9dde2;
  --paper: #fbfaf8;
  --panel: #ffffff;
  --teal: #047b73;
  --rust: #a94624;
  --gold: #c2932d;
  --text-width: 860px;
  --figure-width: 940px;
  --shadow: 0 16px 45px rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

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

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 62px;
  padding: 0 5vw;
  background: rgba(251, 250, 248, 0.92);
  border-bottom: 1px solid rgba(23, 23, 23, 0.1);
  backdrop-filter: blur(16px);
}

.brand {
  font-weight: 800;
  letter-spacing: 0;
}

nav {
  display: flex;
  align-items: center;
  gap: 20px;
  color: #30343a;
  font-size: 14px;
}

nav a {
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

nav a:hover,
nav a:focus-visible {
  border-color: var(--teal);
}

.hero {
  position: relative;
  min-height: auto;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 46px;
  padding: 10vh 5vw 72px;
  background: #f4f2ee;
  border-bottom: 1px solid var(--line);
}

.hero-content {
  position: relative;
  width: min(1040px, 100%);
  color: var(--ink);
  text-shadow: none;
}

.venue {
  margin: 0 0 12px;
  color: var(--rust);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 980px;
  margin-bottom: 18px;
  font-size: clamp(40px, 7vw, 84px);
  line-height: 0.98;
  letter-spacing: 0;
}

.subtitle {
  max-width: 720px;
  margin-bottom: 24px;
  color: #343941;
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.42;
  font-weight: 500;
}

.subtitle span {
  display: inline-block;
  margin-right: 10px;
  padding: 3px 7px;
  border: 1px solid rgba(4, 123, 115, 0.24);
  border-radius: 5px;
  color: var(--teal);
  background: rgba(255, 255, 255, 0.54);
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.08em;
  vertical-align: 0.16em;
}

.authors {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  max-width: 100%;
  margin-bottom: 10px;
  font-weight: 700;
}

.author-pair {
  display: inline-flex;
  gap: 16px;
  white-space: nowrap;
}

.authors a {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  white-space: nowrap;
  border-bottom: 1px solid rgba(4, 123, 115, 0.28);
}

.authors a:hover,
.authors a:focus-visible {
  color: var(--teal);
  border-bottom-color: var(--teal);
}

.authors sup,
.affiliations sup,
.author-notes sup {
  font-size: 0.68em;
  line-height: 0;
}

.authors sup {
  font-weight: 800;
}

.affiliations sup,
.author-notes sup {
  margin-right: 2px;
  color: var(--ink);
  font-weight: 700;
}

.affiliations {
  margin-bottom: 6px;
  color: var(--muted);
}

.author-notes {
  max-width: 760px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.action {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid #2d343a;
  border-radius: 8px;
  color: #171717;
  font-weight: 800;
  background: transparent;
  text-shadow: none;
}

.action span {
  display: inline-grid;
  place-items: center;
  min-width: 32px;
  height: 26px;
  border-radius: 4px;
  color: #fff;
  background: #2d343a;
  font-size: 11px;
  letter-spacing: 0;
}

.action.primary {
  border-color: var(--teal);
  background: var(--teal);
  color: #fff;
}

.action.primary span {
  color: #fff;
  background: var(--rust);
}

.hero-visual {
  width: min(1180px, 100%);
  margin: 0;
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 1080 / 608;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.1);
  object-fit: cover;
}

.visual-section {
  display: flex;
  justify-content: center;
  padding: 56px 5vw 0;
  scroll-margin-top: 86px;
}

.section {
  width: min(1180px, calc(100% - 10vw));
  margin: 0 auto;
  padding: 58px 0;
  scroll-margin-top: 86px;
}

.section + .section {
  padding-top: 30px;
}

.section.narrow {
  width: min(var(--text-width), calc(100% - 10vw));
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(190px, 0.34fr) 1fr;
  gap: 28px;
  align-items: start;
  margin-bottom: 28px;
}

.section-heading.compact {
  display: block;
  margin-bottom: 24px;
}

#method .section-heading.compact,
#results .section-heading.compact,
#video .section-heading.compact,
#method .media.full figcaption {
  width: min(var(--text-width), 100%);
  margin-right: auto;
  margin-left: auto;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 3vw, 44px);
  line-height: 1.05;
  letter-spacing: 0;
}

.section p,
figcaption {
  color: var(--muted);
  font-size: 17px;
}

.section p {
  margin-bottom: 18px;
}

.media.full figcaption span,
.result-panel figcaption span {
  display: block;
  margin-bottom: 3px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.media {
  margin: 0;
}

.media.full {
  width: min(var(--figure-width), 100%);
  margin: 0 auto;
}

.media img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.media video {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0f1215;
  box-shadow: var(--shadow);
}

.media.full img {
  max-height: 660px;
  object-fit: contain;
}

.video-category {
  width: min(var(--text-width), 100%);
  margin: 0 auto;
}

.video-category + .video-category {
  margin-top: 40px;
}

h3 {
  margin: 0 0 16px;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0;
}

.video-grid,
.video-comparison-grid {
  display: grid;
  gap: 14px;
}

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

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

.single-video .video-result {
  width: min(720px, 100%);
  margin: 0 auto;
}

.column-labeled-video-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
}

.video-column-caption {
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
  line-height: 1.2;
  text-align: center;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.video-column-caption.ours-condition {
  grid-column: 2 / span 2;
}

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

.secondary-video-grid {
  margin-top: 30px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.condition-image-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 18px;
}

.condition-image-strip img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  object-fit: cover;
}

.interpolation-scrubber {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  width: min(640px, 78%);
  margin: 0 auto 18px;
}

.interpolation-play-toggle {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 36px;
  border: 1px solid var(--teal);
  border-radius: 8px;
  color: #fff;
  background: var(--teal);
  font: inherit;
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
}

.interpolation-play-toggle:hover,
.interpolation-play-toggle:focus-visible {
  border-color: #055f59;
  background: #055f59;
  outline: none;
}

.interpolation-slider {
  display: block;
  width: 100%;
  accent-color: var(--teal);
}

.row-labeled-video-grid {
  grid-template-columns: max-content repeat(3, minmax(0, 1fr));
  align-items: center;
  column-gap: 16px;
}

.video-row-label {
  justify-self: end;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
  line-height: 1.2;
  text-align: right;
  text-transform: uppercase;
  transform: rotate(180deg);
  white-space: nowrap;
  writing-mode: vertical-rl;
}

.video-result {
  min-width: 0;
  margin: 0;
}

.video-result video {
  width: 100%;
  aspect-ratio: 28 / 19;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0f1215;
  box-shadow: var(--shadow);
  object-fit: contain;
}

.interpolation-grid .video-result video {
  aspect-ratio: 7 / 4;
}

.video-result figcaption {
  margin-top: 8px;
  color: #30343a;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  overflow-wrap: anywhere;
}

.media.full figcaption {
  max-width: 920px;
}

figcaption {
  margin-top: 12px;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  align-items: start;
}

.results-viewer {
  max-width: var(--figure-width);
  margin: 0 auto;
}

.result-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}

.result-tab {
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #30343a;
  background: rgba(255, 255, 255, 0.66);
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}

.result-tab:hover,
.result-tab:focus-visible {
  border-color: var(--teal);
  outline: none;
}

.result-tab.active {
  border-color: var(--teal);
  color: #fff;
  background: var(--teal);
}

.result-panel {
  margin: 0;
  text-align: center;
}

.result-panel img {
  width: min(var(--text-width), 100%);
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
  object-fit: contain;
}

.comparison-labels {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  width: min(var(--text-width), 100%);
  margin: 10px auto 0;
  gap: 8px;
  color: #30343a;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
}

.comparison-labels span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.comparison-labels span:last-child {
  color: var(--teal);
}

.result-panel figcaption {
  max-width: 680px;
  margin: 14px auto 0;
  text-align: center;
  font-size: 14px;
  line-height: 1.45;
}

pre {
  overflow-x: auto;
  max-width: var(--text-width);
  margin: 18px auto 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-left: 5px solid var(--teal);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.06);
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.55;
}

.footer {
  padding: 34px 5vw 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
}

.footer p {
  margin: 0;
}

@media (max-width: 860px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  nav {
    width: 100%;
    gap: 14px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    padding-top: 7vh;
    gap: 34px;
  }

  .section-heading,
  .gallery {
    grid-template-columns: 1fr;
  }

  .video-grid,
  .video-comparison-grid {
    gap: 12px;
  }

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

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

  .row-labeled-video-grid {
    grid-template-columns: max-content repeat(3, minmax(0, 1fr));
  }

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

  .video-column-caption {
    min-height: 0;
    text-align: center;
  }

  .video-column-caption.ours-condition {
    grid-column: 2 / span 2;
  }

  .condition-image-strip {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .interpolation-scrubber {
    width: calc(100% - 18px);
  }

  .video-row-label {
    margin-top: 0;
    text-align: right;
    transform: rotate(180deg);
    writing-mode: vertical-rl;
  }

  .result-tabs {
    flex-wrap: nowrap;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .result-tab {
    flex: 0 0 auto;
  }

  .visual-section {
    padding-top: 36px;
  }

  .section {
    padding: 54px 0;
  }
}

@media (max-width: 560px) {
  .hero {
    padding-right: 22px;
    padding-left: 22px;
  }

  h1 {
    font-size: 38px;
  }

  .subtitle {
    font-size: 18px;
  }

  .authors {
    gap: 6px 12px;
    font-size: 14px;
  }

  .actions {
    width: 100%;
  }

  .action {
    flex: 1 1 150px;
    justify-content: center;
  }

  .section,
  .section.narrow {
    width: calc(100% - 44px);
  }
}