:root {
  --bg: #f7f5ef;
  --panel: #ffffff;
  --ink: #1d2528;
  --muted: #657072;
  --line: #d7ddd9;
  --accent: #197278;
  --accent-dark: #0c454b;
  --warm: #d96c45;
  --shadow: 0 18px 60px rgba(16, 35, 37, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

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

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(247, 245, 239, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

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

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  color: var(--muted);
  font-size: 0.94rem;
}

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

.hero {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: clamp(22px, 4vw, 40px);
  padding: clamp(36px, 7vw, 84px) clamp(18px, 5vw, 72px) clamp(28px, 5vw, 56px);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: none;
  margin: 0 auto;
  text-align: center;
}

.hero-media {
  width: 100%;
  max-width: none;
  margin: 0 auto;
}

.venue {
  display: inline-block;
  margin: 8px 0 6px;
  color: var(--accent);
  font-size: 1rem;
  font-weight: 750;
}

.venue:hover {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(3rem, 7.8vw, 7.2rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.subtitle {
  max-width: 100%;
  width: 100%;
  margin-bottom: 20px;
  font-size: clamp(1.28rem, 2.4vw, 2.15rem);
  line-height: 1.16;
  font-weight: 680;
  text-align: center;
}

.authors,
.affiliations {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  justify-content: center;
  width: 100%;
  flex-wrap: nowrap;
  gap: 12px 16px;
  align-items: baseline;
  text-align: center;
}

.authors {
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}

.authors::-webkit-scrollbar {
  display: none;
}

.authors {
  color: var(--ink);
  margin-bottom: 6px;
}

.authors li {
  font-size: 1.02rem;
  line-height: 1.45;
  font-weight: 650;
}

.authors sup,
.affiliations sup {
  font-size: 0.75em;
  margin-left: 3px;
  color: var(--accent-dark);
  font-weight: 750;
}

.affiliations {
  color: var(--muted);
  margin-bottom: 10px;
}

.affiliations li {
  font-size: 0.99rem;
  line-height: 1.45;
}

.affiliations a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.affiliations a {
  color: var(--accent-dark);
}

.affiliations a:hover {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.affiliation-logo {
  width: auto;
  height: 25px;
  max-width: 26px;
  object-fit: contain;
  border-radius: 2px;
  vertical-align: middle;
  align-self: center;
  margin-top: 1px;
}

.hero-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--accent-dark);
  font-weight: 750;
  box-shadow: 0 8px 26px rgba(24, 46, 48, 0.06);
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.hero-media {
  min-width: 0;
  position: relative;
}

.hero-media > video {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  background: #111;
  box-shadow: var(--shadow);
}

.hero-video-mask {
  position: absolute;
  top: 24px;
  left: 8%;
  width: 84%;
  height: 56px;
  border-radius: 8px;
  background: #000;
  opacity: 0.9;
  pointer-events: none;
  z-index: 2;
  display: none;
}

.hero-video-mask.active {
  display: block;
}

.media-caption {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 650;
}

.hero-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.hero-strip video {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 6px;
  background: #111;
}

.section {
  padding: clamp(52px, 8vw, 98px) clamp(18px, 4vw, 56px);
}

.section.compact {
  padding-top: 32px;
}

.section.muted {
  background: #ecece5;
  border-block: 1px solid var(--line);
}

.container {
  width: min(1180px, 100%);
  margin: 0 auto;
}

.container.narrow {
  width: min(920px, 100%);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(220px, 0.42fr) minmax(0, 0.58fr);
  gap: 24px;
  align-items: end;
  margin-bottom: 28px;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.02;
}

.section-heading h2 {
  margin-bottom: 0;
}

.lead,
.section-heading p {
  color: var(--muted);
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 30px 0;
}

.stat-grid div {
  min-height: 118px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.stat-grid strong {
  display: block;
  color: var(--accent-dark);
  font-size: 2.8rem;
  line-height: 1;
}

.stat-grid span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-weight: 650;
}

.figure-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 14px 44px rgba(16, 35, 37, 0.08);
}

.figure-panel img {
  height: auto;
  background: white;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tab {
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 750;
}

.tab.active,
.tab:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: white;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

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

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

.video-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 12px 32px rgba(16, 35, 37, 0.08);
}

.video-card[hidden] {
  display: none;
}

.video-card video {
  aspect-ratio: 16 / 11;
  object-fit: cover;
  background: #111;
}

.video-card h3,
.video-card p {
  padding-inline: 14px;
}

.video-card h3 {
  margin: 12px 0 10px;
  font-size: 1rem;
}

.video-card p {
  color: var(--muted);
  font-size: 0.95rem;
}

.task-card h3 {
  margin-bottom: 7px;
}

.task-goal {
  min-height: 5.2em;
  margin: 0 0 12px;
  line-height: 1.45;
}

.task-goal strong {
  color: var(--ink);
}

.video-card.wide video {
  aspect-ratio: auto;
  object-fit: contain;
}

.task-overview {
  margin-top: 28px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 20px;
  align-items: start;
}

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

.method-figure {
  margin-bottom: 22px;
}

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

.baseline-grid article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.baseline-grid h3 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.baseline-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.results-table {
  margin-top: 24px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.results-table [role="row"] {
  min-width: 720px;
  display: grid;
  grid-template-columns: 1.7fr repeat(4, 0.65fr);
  border-bottom: 1px solid var(--line);
}

.results-table [role="row"]:last-child {
  border-bottom: 0;
}

.results-table span {
  padding: 11px 14px;
}

.table-head {
  background: var(--accent-dark);
  color: white;
  font-weight: 800;
}

.subhead {
  margin: 34px 0 14px;
  font-size: 1.3rem;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.comparison {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 12px 32px rgba(16, 35, 37, 0.08);
}

.comparison h4 {
  margin-bottom: 10px;
}

.comparison div {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.comparison video {
  aspect-ratio: 16 / 11;
  object-fit: cover;
  border-radius: 6px;
  background: #111;
}

.comparison p {
  margin: 10px 0 0;
  color: var(--muted);
}

.metric-summary {
  padding: 22px;
  border-left: 4px solid var(--warm);
  background: var(--panel);
}

.metric-summary h3 {
  margin-bottom: 14px;
}

.metric-summary p:last-child {
  margin-bottom: 0;
}

.paper-preview {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin: 24px 0;
}

.paper-preview img {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 14px 44px rgba(16, 35, 37, 0.08);
}

pre {
  overflow-x: auto;
  padding: 18px;
  border: 1px solid #22383a;
  border-radius: 8px;
  background: #102326;
  color: #ecf6ef;
  font-size: 0.93rem;
}

footer {
  padding: 24px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 980px) {
  .section-heading,
  .split {
    grid-template-columns: 1fr;
  }

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

  .stat-grid,
  .baseline-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  nav {
    justify-content: flex-start;
    gap: 10px 14px;
  }

  .hero {
    padding-top: 30px;
  }

  .hero-strip,
  .video-grid,
  .video-grid.three,
  .video-grid.two,
  .stat-grid,
  .baseline-grid,
  .comparison-grid,
  .comparison div,
  .paper-preview {
    grid-template-columns: 1fr;
  }

}