:root {
  color-scheme: light;
  --ink: #171916;
  --muted: #62665f;
  --line: #d9dcd5;
  --paper: #ffffff;
  --wash: #f7f7f4;
  --accent: #c83d22;
  --accent-dark: #8f2817;
  --green: #274c3c;
  --media: #121411;
  --shell: 1120px;
  --shell-wide: 1360px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 8px 12px;
  color: #fff;
  background: var(--ink);
  transform: translateY(-150%);
}

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

.shell,
.shell-wide {
  width: calc(100% - 48px);
  margin-inline: auto;
}

.shell {
  max-width: var(--shell);
}

.shell-wide {
  max-width: var(--shell-wide);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(217, 220, 213, 0.86);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  width: calc(100% - 48px);
  max-width: var(--shell-wide);
  min-height: 58px;
  margin-inline: auto;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.wordmark {
  color: var(--accent);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  color: #454943;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--accent);
}

.hero {
  padding: 76px 0 48px;
  overflow: hidden;
  background: var(--wash);
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  max-width: 1040px;
  text-align: center;
}

.venue,
.section-kicker {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 1020px;
  margin: 0 auto;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 48px;
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero h1 span {
  color: var(--accent);
  font-weight: 700;
}

.authors {
  display: flex;
  margin: 30px 0 0;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 24px;
  font-size: 17px;
  font-weight: 650;
}

.authors sup,
.affiliations sup {
  color: var(--accent);
  font-size: 10px;
}

.affiliations {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-links {
  display: flex;
  margin-top: 25px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-links a {
  display: inline-flex;
  min-width: 104px;
  padding: 9px 18px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  font-size: 14px;
  font-weight: 750;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
}

.hero-links a:first-child {
  color: #fff;
  border-color: var(--accent);
  background: var(--accent);
}

.hero-links a:hover,
.hero-links a:focus-visible {
  color: #fff;
  border-color: var(--accent-dark);
  background: var(--accent-dark);
}

.link-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.hero-links a:first-child .link-icon {
  filter: brightness(0) invert(1);
}

.teaser-grid {
  display: grid;
  height: 350px;
  margin-top: 54px;
  grid-template-columns: 1fr 1fr 0.58fr 0.58fr;
  gap: 10px;
}

.teaser {
  position: relative;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border-radius: 6px;
  background: var(--media);
}

.teaser video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: var(--media);
}

.teaser figcaption {
  position: absolute;
  right: 10px;
  bottom: 10px;
  left: 10px;
  display: flex;
  padding: 7px 9px;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: #fff;
  background: rgba(16, 18, 15, 0.76);
  border-radius: 4px;
  pointer-events: none;
}

.teaser figcaption span {
  overflow: hidden;
  font-size: 13px;
  font-weight: 750;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.teaser figcaption small {
  color: #d8ddd5;
  font-size: 10px;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0;
}

.section {
  padding: 92px 0;
  scroll-margin-top: 58px;
}

.abstract-section {
  background: var(--paper);
}

.text-column {
  max-width: 850px;
}

h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 38px;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: 0;
}

.text-column > p:not(.section-kicker) {
  margin: 24px 0 0;
  color: #353934;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 20px;
  line-height: 1.75;
}

.method-section,
.speed-section {
  background: var(--wash);
  border-block: 1px solid var(--line);
}

.section-heading {
  display: grid;
  margin-bottom: 34px;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.7fr);
  align-items: end;
  gap: 42px;
}

.section-heading > p {
  margin: 0;
  color: var(--muted);
}

.method-figure {
  margin: 0;
}

.method-figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.method-figure figcaption {
  max-width: 850px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.method-points {
  display: grid;
  margin-top: 46px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.method-points article {
  padding-top: 20px;
  border-top: 2px solid var(--ink);
}

.point-index {
  color: var(--accent);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16px;
  font-weight: 700;
}

.method-points h3 {
  margin: 10px 0 8px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
  line-height: 1.25;
}

.method-points p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.results-section {
  background: var(--paper);
}

.hyper-section {
  padding-top: 12px;
}

.video-grid {
  display: grid;
  gap: 22px;
}

.video-grid-n3v {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.video-grid-hyper {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.result-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.result-card video {
  width: 100%;
  aspect-ratio: 688 / 512;
  object-fit: contain;
  background: var(--media);
}

.portrait-card video {
  aspect-ratio: 272 / 480;
}

.result-meta {
  display: flex;
  min-height: 60px;
  padding: 13px 15px;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.result-meta h3,
.result-meta p {
  margin: 0;
  line-height: 1.25;
}

.result-meta h3 {
  min-width: 0;
  font-size: 15px;
  font-weight: 750;
}

.result-meta p {
  flex: 0 0 auto;
  color: var(--green);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  font-weight: 750;
}

.speed-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 64px;
}

.speed-note {
  max-width: 540px;
  margin: 20px 0 0;
  color: var(--muted);
}

.speed-stats {
  display: flex;
  margin-top: 20px;
  flex-wrap: wrap;
  gap: 8px 20px;
  color: var(--muted);
  font-size: 13px;
}

.speed-stats strong {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.speed-value {
  display: flex;
  min-width: 330px;
  margin: 0;
  align-items: baseline;
  justify-content: flex-end;
  gap: 14px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.speed-value strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 88px;
  font-weight: 600;
}

.speed-value span {
  font-size: 22px;
  font-weight: 800;
}

.citation-section {
  background: var(--green);
  color: #fff;
}

.citation-section .section-kicker {
  color: #f7a68d;
}

.citation-layout {
  display: grid;
  grid-template-columns: minmax(230px, 0.55fr) minmax(0, 1.45fr);
  gap: 48px;
}

.citation-layout p {
  color: #d7e0db;
}

.copy-button {
  margin-top: 14px;
  padding: 9px 15px;
  color: #fff;
  border: 1px solid #fff;
  border-radius: 4px;
  background: transparent;
  font: inherit;
  font-size: 13px;
  font-weight: 750;
  cursor: pointer;
}

.copy-button:hover,
.copy-button:focus-visible {
  color: var(--green);
  background: #fff;
}

.copy-status {
  min-height: 24px;
  margin: 8px 0 0;
  font-size: 12px;
}

pre {
  max-width: 100%;
  margin: 0;
  padding: 22px;
  overflow: auto;
  color: #eff5f1;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.16);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  line-height: 1.7;
  white-space: pre;
}

footer {
  padding: 24px 0;
  color: #60645e;
  background: #fff;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: 12px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--accent-dark);
  font-weight: 700;
}

.footer-icon {
  width: 16px;
  height: 16px;
}

:focus-visible {
  outline: 3px solid rgba(200, 61, 34, 0.42);
  outline-offset: 3px;
}

@media (max-width: 980px) {
  .hero h1 {
    font-size: 41px;
  }

  .teaser-grid {
    height: auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .teaser-landscape {
    aspect-ratio: 688 / 512;
  }

  .teaser-portrait {
    aspect-ratio: 272 / 480;
  }

  .video-grid-n3v {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 720px) {
  .shell,
  .shell-wide,
  .header-inner {
    width: calc(100% - 32px);
  }

  .site-header {
    position: static;
  }

  .header-inner {
    min-height: 54px;
  }

  .site-nav {
    gap: 15px;
  }

  .site-nav a:nth-child(2),
  .site-nav a:nth-child(3) {
    display: none;
  }

  .hero {
    padding: 50px 0 34px;
  }

  .hero h1 {
    font-size: 34px;
    line-height: 1.12;
  }

  .authors {
    margin-top: 24px;
    font-size: 15px;
    gap: 4px 15px;
  }

  .affiliations {
    font-size: 12px;
  }

  .teaser-grid {
    margin-top: 38px;
  }

  .teaser figcaption {
    right: 7px;
    bottom: 7px;
    left: 7px;
  }

  .section {
    padding: 66px 0;
  }

  h2 {
    font-size: 32px;
  }

  .text-column > p:not(.section-kicker) {
    font-size: 18px;
    line-height: 1.68;
  }

  .section-heading,
  .speed-layout,
  .citation-layout {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .section-heading {
    align-items: start;
  }

  .method-points {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .video-grid,
  .video-grid-n3v {
    gap: 14px;
  }

  .result-meta {
    min-height: 58px;
    padding: 11px 12px;
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .speed-value {
    min-width: 0;
    justify-content: flex-start;
  }

  .speed-value strong {
    font-size: 68px;
  }

  pre {
    font-size: 11px;
  }
}

@media (max-width: 430px) {
  .wordmark {
    font-size: 19px;
  }

  .site-nav a {
    font-size: 13px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .teaser-grid {
    grid-template-columns: 1fr 1fr;
  }

  .teaser-landscape {
    grid-column: 1 / -1;
  }

  .video-grid-n3v {
    grid-template-columns: 1fr;
  }

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

  .speed-value strong {
    font-size: 58px;
  }
}

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