:root {
  color-scheme: light;
  --ink: #1f2933;
  --muted: #667085;
  --line: #d8dee8;
  --paper: #ffffff;
  --soft: #f4f7fb;
  --page-start: #f9fbfd;
  --page-end: #ffffff;
  --header-bg: rgba(255, 255, 255, 0.88);
  --figure-bg: #ffffff;
  --figure-line: rgba(216, 222, 232, 0.7);
  --content-copy: #384454;
  --button-bg: #ffffff;
  --unavailable-bg: #eef2f6;
  --unavailable-text: #667085;
  --video-line: #a9b5c6;
  --metrics-end: #f7fafc;
  --pre-bg: #17212b;
  --pre-text: #e9eef6;
  --accent: #1f7a6d;
  --accent-strong: #155e54;
  --gold: #d99b21;
  --shadow: 0 18px 55px rgba(32, 48, 71, 0.13);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --ink: #edf2f7;
    --muted: #a9b4c3;
    --line: #2f3a4a;
    --paper: #121923;
    --soft: #172331;
    --page-start: #101820;
    --page-end: #0b1118;
    --header-bg: rgba(12, 18, 26, 0.88);
    --figure-bg: #ffffff;
    --figure-line: rgba(47, 58, 74, 0.9);
    --content-copy: #c7d0dc;
    --button-bg: #172331;
    --unavailable-bg: #202a36;
    --unavailable-text: #95a1af;
    --video-line: #526174;
    --metrics-end: #172331;
    --pre-bg: #090d12;
    --pre-text: #edf2f7;
    --accent: #35a895;
    --accent-strong: #70d6c6;
    --gold: #f0b64d;
    --shadow: 0 18px 55px rgba(0, 0, 0, 0.32);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, var(--page-start) 0%, var(--page-end) 420px),
    var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.65;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--figure-line);
  background: var(--header-bg);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, calc(100% - 32px));
  min-height: 62px;
  margin: 0 auto;
  gap: 24px;
}

.brand {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
  font-size: 0.95rem;
}

main {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 76px 0 42px;
  text-align: center;
}

.venue {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 0.95rem;
  font-weight: 750;
  text-transform: uppercase;
}

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

h1 {
  max-width: 920px;
  margin: 0 auto 18px;
  font-size: clamp(2.15rem, 6vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.subtitle {
  max-width: 780px;
  margin: 0 auto 22px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.authors {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 18px;
  margin-bottom: 10px;
  color: var(--muted);
}

sup {
  font-size: 0.68em;
  line-height: 0;
}

.affiliations {
  margin: 0 auto 26px;
  color: var(--muted);
  font-size: 0.98rem;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 38px;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 92px;
  min-height: 42px;
  border: 1px solid rgba(31, 122, 109, 0.2);
  border-radius: 999px;
  color: #ffffff;
  background: var(--accent);
  font-weight: 750;
  box-shadow: 0 8px 18px rgba(31, 122, 109, 0.18);
}

.pill:hover {
  background: var(--accent-strong);
  text-decoration: none;
}

.pill.secondary {
  border-color: var(--line);
  color: var(--accent-strong);
  background: var(--paper);
  box-shadow: none;
}

.pill.secondary:hover {
  background: var(--soft);
}

.pill.unavailable {
  border-color: rgba(102, 112, 133, 0.24);
  color: var(--unavailable-text);
  background: var(--unavailable-bg);
  box-shadow: none;
  cursor: not-allowed;
}

.pill.unavailable:hover {
  background: var(--unavailable-bg);
}

.hero-figure,
.wide-figure {
  margin: 0;
  border: 0;
  border-radius: 6px;
  overflow: hidden;
  background: var(--paper);
  box-shadow: 0 8px 24px rgba(32, 48, 71, 0.06);
}

.figure-grid {
  display: grid;
  gap: 10px;
  padding: 0;
  background: var(--figure-bg);
}

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

.figure-grid img,
.paper-image {
  display: block;
  width: 100%;
  object-fit: contain;
  background: var(--figure-bg);
}

.figure-grid img {
  height: clamp(260px, 28vw, 430px);
  align-self: center;
  border-radius: 4px;
}

.paper-image {
  height: clamp(300px, 48vw, 600px);
  background: var(--figure-bg);
}

.hero-figure .figure-grid {
  border-bottom: 1px solid var(--figure-line);
}

.wide-figure .paper-image {
  border-bottom: 1px solid var(--figure-line);
}

.overview-stage {
  position: relative;
  display: grid;
  align-items: center;
  background: var(--figure-bg);
  border-bottom: 1px solid var(--figure-line);
}

.overview-slides {
  min-height: clamp(280px, 42vw, 540px);
}

.overview-slide {
  display: none;
  width: 100%;
  height: clamp(280px, 42vw, 540px);
  object-fit: contain;
  background: var(--figure-bg);
}

.overview-slide.is-active {
  display: block;
}

.overview-button {
  position: absolute;
  top: 50%;
  z-index: 2;
  transform: translateY(-50%);
  border-color: var(--figure-line);
  background: var(--button-bg);
  box-shadow: 0 8px 22px rgba(32, 48, 71, 0.12);
}

.overview-button.previous {
  left: 14px;
}

.overview-button.next {
  right: 14px;
}

.overview-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.overview-caption [data-counter] {
  flex: 0 0 auto;
  color: var(--accent-strong);
  font-weight: 750;
}

.wide-figure.compact {
  margin-top: 22px;
  box-shadow: 0 10px 28px rgba(32, 48, 71, 0.065);
}

.wide-figure.compact .paper-image {
  height: clamp(260px, 38vw, 460px);
}

figcaption {
  padding: 12px 18px;
  color: var(--muted);
  font-size: 0.94rem;
  text-align: left;
  background: var(--paper);
}

.content-section {
  padding: 46px 0;
  border-top: 1px solid var(--line);
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  line-height: 1.15;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

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

h3 {
  margin-bottom: 10px;
  font-size: 1.22rem;
  line-height: 1.3;
}

h4 {
  margin-bottom: 8px;
  font-size: 1.02rem;
}

.content-section > p {
  max-width: 880px;
  color: var(--content-copy);
  font-size: 1.06rem;
}

.intro-video {
  margin: 0 auto 34px;
}

.intro-video-player {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #000000;
  box-shadow: 0 12px 35px rgba(32, 48, 71, 0.08);
}

.video-placeholder {
  display: grid;
  aspect-ratio: 16 / 9;
  min-height: 300px;
  place-items: center;
  border: 1px dashed var(--video-line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(31, 122, 109, 0.08), rgba(217, 155, 33, 0.1)),
    var(--soft);
  color: var(--muted);
  text-align: center;
}

.video-placeholder strong,
.video-placeholder span {
  display: block;
}

.video-placeholder strong {
  color: var(--ink);
  font-size: 1.3rem;
}

.contribution-grid,
.comparison-grid,
.split-section,
.tool-table,
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.contribution-grid article,
.comparison-grid article,
.split-section article,
.tool-table article,
.metrics-grid article {
  min-height: 160px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.contribution-grid p,
.comparison-grid p,
.split-section p,
.tool-table p,
.slide p {
  margin-bottom: 0;
  color: var(--muted);
}

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

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

.tool-table code {
  color: var(--accent-strong);
  font-weight: 750;
}

.metrics-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 22px;
}

.metrics-grid article {
  min-height: 128px;
  background: linear-gradient(180deg, var(--paper) 0%, var(--metrics-end) 100%);
}

.metric {
  display: block;
  color: var(--accent-strong);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 850;
  line-height: 1;
}

.metric-label {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.35;
}

.carousel,
.comparison {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 12px 35px rgba(32, 48, 71, 0.08);
}

.carousel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.carousel-head h3,
.comparison h3 {
  margin: 0;
}

.carousel-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-weight: 700;
}

button {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink);
  background: var(--button-bg);
  cursor: pointer;
  font-size: 1.1rem;
}

button:hover,
button:focus-visible {
  border-color: var(--accent);
  outline: none;
}

.copy-button {
  width: auto;
  min-width: 78px;
  height: 38px;
  padding: 0 16px;
  border-radius: 999px;
  color: var(--accent-strong);
  font-size: 0.92rem;
  font-weight: 750;
}

.slides {
  position: relative;
}

.slide {
  display: none;
  grid-template-columns: minmax(220px, 0.9fr) minmax(260px, 1.1fr);
  gap: 24px;
  align-items: center;
  padding: 22px;
}

.slide.is-active {
  display: grid;
}

.slide img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.comparison {
  padding: 20px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: var(--paper);
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

th {
  background: var(--soft);
  font-weight: 800;
}

tr:last-child td {
  border-bottom: 0;
}

pre {
  overflow-x: auto;
  margin: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--pre-bg);
  color: var(--pre-text);
  font-size: 0.94rem;
  line-height: 1.55;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 24px;
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.94rem;
}

.paper-page main {
  width: min(1180px, calc(100% - 32px));
}

.paper-viewer {
  padding: 44px 0;
}

.paper-viewer-head {
  text-align: center;
}

.paper-viewer-head h1 {
  max-width: 960px;
  font-size: clamp(1.9rem, 4.2vw, 3.4rem);
}

.paper-pages {
  display: grid;
  gap: 22px;
}

.paper-page-image {
  margin: 0 auto;
  width: min(100%, 920px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--figure-bg);
  box-shadow: 0 12px 35px rgba(32, 48, 71, 0.08);
}

.paper-page-image img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--figure-bg);
}

.paper-page-image figcaption {
  border-top: 1px solid var(--figure-line);
  text-align: center;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
    gap: 8px;
  }

  .nav-links {
    justify-content: flex-start;
    gap: 10px 14px;
    font-size: 0.88rem;
  }

  .hero {
    padding-top: 44px;
  }

  .contribution-grid,
  .comparison-grid,
  .split-section,
  .tool-table,
  .metrics-grid,
  .slide {
    grid-template-columns: 1fr;
  }

  .carousel-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .video-placeholder {
    min-height: 230px;
  }

  .paper-viewer {
    padding: 30px 0;
  }

  .paper-pages {
    gap: 16px;
  }

  .figure-grid.two-up {
    grid-template-columns: 1fr;
  }

  .figure-grid img,
  .paper-image,
  .wide-figure.compact .paper-image {
    height: clamp(220px, 70vw, 360px);
  }
}