:root {
  --ink: #211d26;
  --muted: #6e6572;
  --accent: #7b1f78;
  --accent-dark: #561353;
  --accent-soft: #f4eaf4;
  --line: #dfd6e0;
  --panel: #faf8fa;
  --white: #ffffff;
  --shadow: 0 12px 32px rgba(54, 30, 56, 0.1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 160ms ease, opacity 160ms ease;
}

a:hover,
a:focus-visible { color: var(--accent-dark); }

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

.page-width {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(123, 31, 120, 0.12);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  width: min(1120px, calc(100% - 40px));
  min-height: 58px;
  margin-inline: auto;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.9rem;
  font-weight: 650;
}

.nav-links a { color: var(--muted); }

.hero {
  padding-top: 72px;
  padding-bottom: 48px;
  text-align: center;
}

.venue,
.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p { margin-top: 0; }

h1 {
  max-width: 1120px;
  margin: 0 auto 28px;
  font-size: clamp(2.15rem, 4.6vw, 3.95rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

h2 {
  margin-bottom: 8px;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.15rem;
  line-height: 1.35;
}

.authors {
  display: flex;
  max-width: 900px;
  margin: 0 auto 16px;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px 22px;
  font-size: 1.08rem;
  font-weight: 650;
}

.affiliations {
  display: flex;
  max-width: 900px;
  margin: 0 auto 26px;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2px 22px;
  color: var(--muted);
  font-size: 0.92rem;
}

sup {
  padding-left: 2px;
  font-size: 0.68em;
}

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

.resource {
  display: inline-flex;
  min-height: 40px;
  padding: 8px 15px;
  align-items: center;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 750;
}

.resource-pending {
  border-color: var(--line);
  background: var(--panel);
  color: var(--muted);
}

.teaser-section { padding-bottom: 38px; }

.wide-image {
  width: 100%;
  border-radius: 14px;
  background: var(--panel);
}

.method-image {
  border: 1px solid var(--line);
  border-radius: 10px;
}

.figure-caption {
  max-width: 960px;
  margin: 16px auto 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
  text-align: center;
}

.section-block {
  padding-top: 52px;
  padding-bottom: 42px;
}

.section-rule {
  width: 100%;
  height: 3px;
  margin: 0 0 24px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) 0 90px, var(--line) 90px 100%);
}

.abstract-text,
.section-intro {
  color: #3e3741;
  text-align: justify;
}

.abstract-text { font-size: 1.04rem; }

.section-intro {
  max-width: 860px;
  margin-bottom: 24px;
}

.reference-list {
  margin: -4px 0 26px;
}

.reference-list p {
  margin: 0 0 8px;
  font-size: 0.92rem;
  line-height: 1.5;
  text-align: left;
}

.reference-list a {
  text-decoration: underline;
  text-decoration-color: rgba(123, 31, 120, 0.35);
  text-underline-offset: 2px;
}

.method-lead {
  max-width: 980px;
}

.video-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #121014;
  box-shadow: var(--shadow);
}

.video-frame video {
  width: 100%;
  height: auto;
}

.featured-video {
  max-width: 940px;
  margin-inline: auto;
}

.feature-grid {
  display: grid;
  margin-top: 30px;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
}

.feature-card p,
.media-card p,
.subsection-heading > p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.feature-number {
  display: block;
  margin-bottom: 24px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.media-grid {
  display: grid;
  gap: 24px;
}

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

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

.comparison-dataset {
  margin-bottom: 12px;
  font-size: 1.2rem;
  text-align: center;
}

.method-labels {
  display: grid;
  margin-top: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  color: var(--ink);
  font-size: 1rem;
  font-weight: 750;
  text-align: center;
}

.media-card h3 {
  margin-top: 16px;
  margin-bottom: 3px;
}

.media-card .comparison-dataset {
  margin-top: 0;
  margin-bottom: 12px;
}

.subsection-heading {
  display: grid;
  margin-top: 54px;
  margin-bottom: 18px;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  gap: 36px;
}

.subsection-heading h3 {
  margin-bottom: 0;
  font-size: 1.45rem;
  letter-spacing: -0.025em;
}

.subsection-heading .eyebrow { margin-bottom: 5px; }

#applications .subsection-heading {
  grid-template-columns: 1fr;
}

.application-caption {
  max-width: 920px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.citation-section p {
  margin-bottom: 12px;
  color: var(--muted);
}

.acknowledgement-section p {
  max-width: 1040px;
  margin-bottom: 0;
  color: #3e3741;
}

pre {
  overflow-x: auto;
  margin: 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #29232b;
  color: #f5eff5;
  font: 0.88rem/1.6 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

footer {
  margin-top: 44px;
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.footer-inner {
  display: flex;
  min-height: 108px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
  font-size: 0.86rem;
}

.footer-inner p { margin-bottom: 0; }

@media (max-width: 820px) {
  .nav-links { gap: 14px; }
  .hero { padding-top: 54px; }
  h1 br { display: none; }

  .feature-grid,
  .two-column { grid-template-columns: 1fr; }

  .subsection-heading {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .media-grid { gap: 32px; }
}

@media (max-width: 620px) {
  .page-width,
  .nav-inner { width: min(100% - 24px, 1120px); }
  .top-nav { position: static; }
  .nav-inner { min-height: 52px; }
  .nav-links { display: none; }

  .hero {
    padding-top: 42px;
    padding-bottom: 32px;
  }

  .authors {
    gap: 3px 14px;
    font-size: 0.98rem;
  }

  .section-block {
    padding-top: 40px;
    padding-bottom: 28px;
  }

  .abstract-text,
  .section-intro { text-align: left; }

  .resource-row { gap: 8px; }

  .resource {
    min-height: 36px;
    padding: 6px 11px;
    font-size: 0.78rem;
  }

  .footer-inner {
    padding-block: 24px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}