:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #5b687b;
  --soft: #eff6ff;
  --paper: #f7fbff;
  --panel: rgba(255, 255, 255, 0.78);
  --panel-strong: rgba(255, 255, 255, 0.92);
  --line: rgba(30, 47, 76, 0.12);
  --line-strong: rgba(30, 47, 76, 0.18);
  --primary: #345fcf;
  --primary-dark: #1c45a8;
  --cyan: #0e90ce;
  --violet: #7a55d8;
  --emerald: #16866e;
  --rose: #bc5966;
  --code: #101827;
  --shadow: 0 18px 48px rgba(21, 38, 80, 0.12);
  --shadow-soft: 0 10px 32px rgba(21, 38, 80, 0.08);
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(135deg, rgba(255, 247, 237, 0.72), rgba(239, 246, 255, 0.92) 34%, rgba(240, 253, 250, 0.78) 66%, rgba(250, 245, 255, 0.82)),
    var(--paper);
  background-attachment: fixed;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-weight: 500;
  line-height: 1.58;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(21, 38, 80, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 38, 80, 0.045) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, 0.85) 48%, transparent 100%);
}

body::after {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  content: "";
  background-image:
    radial-gradient(circle at 14% 18%, rgba(21, 38, 80, 0.2) 1px, transparent 2px),
    radial-gradient(circle at 33% 78%, rgba(21, 38, 80, 0.16) 1px, transparent 2px),
    radial-gradient(circle at 62% 22%, rgba(21, 38, 80, 0.14) 1px, transparent 2px),
    radial-gradient(circle at 84% 66%, rgba(21, 38, 80, 0.16) 1px, transparent 2px);
  background-repeat: no-repeat;
}

body > * {
  position: relative;
  z-index: 1;
}

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

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

.topbar {
  position: fixed;
  z-index: 30;
  top: 14px;
  left: 50%;
  display: flex;
  width: min(1120px, calc(100% - 32px));
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 14px 36px rgba(21, 38, 80, 0.1);
  transform: translateX(-50%);
  backdrop-filter: blur(18px) saturate(145%);
}

.brand {
  flex: 0 0 auto;
  color: var(--primary-dark);
  font-size: 0.98rem;
  font-weight: 800;
}

nav {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: flex-end;
  gap: 7px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 680;
}

nav a {
  border-radius: 8px;
  padding: 7px 9px;
  white-space: nowrap;
}

nav a:hover {
  background: rgba(52, 95, 207, 0.08);
  color: var(--primary-dark);
}

.paper-hero {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  padding: 106px 24px 70px;
  overflow: hidden;
  background: #07111f;
}

.hero-bg-video,
.hero-bg-shade {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-bg-video {
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  opacity: 1;
  filter: blur(7px) saturate(1.22) contrast(1.08) brightness(0.74);
  transform: scale(1.025);
}

.hero-bg-shade {
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(5, 10, 20, 0.58) 0%, rgba(5, 10, 20, 0.28) 48%, rgba(247, 251, 255, 0.78) 100%),
    radial-gradient(60% 44% at 50% 38%, rgba(6, 12, 24, 0.08), rgba(5, 10, 20, 0.34) 78%);
}

.constellation {
  position: relative;
}

.constellation::before {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(115deg, transparent 49.9%, rgba(255, 255, 255, 0.08) 50%, transparent 50.1%),
    linear-gradient(63deg, transparent 49.9%, rgba(255, 255, 255, 0.06) 50%, transparent 50.1%);
  background-size: 420px 420px, 520px 520px;
  opacity: 0.42;
}

.hero-shell,
.section-head,
.stats,
.motivation-layout,
.paper-figure-stack,
.pair-showcase-grid,
.result-grid,
.model-table-wrap,
.highlight-grid,
.citation-box,
.paired-teaser,
.teaser-caption {
  width: min(1120px, 100%);
  margin-right: auto;
  margin-left: auto;
}

.hero-shell {
  position: relative;
  z-index: 3;
  text-align: center;
}

.hero-card,
.author-card,
.paired-teaser,
.result-card,
.video-card,
.pair-panel,
.paper-figure,
.model-table-wrap,
.citation-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(16px) saturate(145%);
}

.hero-card {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 18px 22px 18px;
  border-color: transparent;
  background: rgba(5, 10, 20, 0.2);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(8px) saturate(120%);
}

.venue,
.eyebrow,
.kicker {
  margin: 0 0 10px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.paper-hero h1 {
  margin: 0;
  font-size: 4.25rem;
  line-height: 1;
  font-weight: 850;
  text-wrap: pretty;
  text-shadow: 0 18px 48px rgba(0, 0, 0, 0.34);
}

.text-gradient {
  color: transparent;
  background: linear-gradient(100deg, #f8fbff, #b8d8ff 34%, #73f2e1 68%, #fff0b3);
  -webkit-background-clip: text;
  background-clip: text;
}

.paper-hero .venue {
  color: #ffc857;
}

.paper-title {
  max-width: 760px;
  margin: 17px auto 0;
  color: #263755;
  font-size: 1.2rem;
  font-weight: 760;
  line-height: 1.34;
  text-wrap: pretty;
}

.paper-hero .paper-title {
  color: #f7fbff;
  text-shadow: 0 10px 34px rgba(0, 0, 0, 0.42);
}

.subtitle {
  max-width: 720px;
  margin: 15px auto 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.55;
}

.paper-hero .subtitle {
  color: #d8e4f6;
  text-shadow: 0 10px 30px rgba(0, 0, 0, 0.36);
}

.author-card {
  width: min(940px, 100%);
  margin: 22px auto 0;
  padding: 17px 22px 16px;
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(7, 17, 31, 0.34);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.2);
}

.author-line,
.affiliation-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 15px;
  margin: 0;
}

.author-line {
  color: #f8fbff;
  font-size: 0.94rem;
  font-weight: 720;
  line-height: 1.48;
}

.author-line span {
  white-space: nowrap;
}

.affiliation-line {
  margin-top: 9px;
  color: #c8d6ea;
  font-size: 0.78rem;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  line-height: 1.45;
}

.affiliation-line span {
  white-space: nowrap;
}

sup {
  position: relative;
  top: -0.42em;
  margin-left: 1px;
  color: var(--primary);
  font-size: 0.68em;
  line-height: 0;
}

.paper-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}

.paper-hero .button {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.9);
}

.button {
  display: inline-flex;
  min-width: 132px;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 800;
  box-shadow: 0 8px 22px rgba(21, 38, 80, 0.08);
}

.button:hover {
  border-color: rgba(52, 95, 207, 0.35);
  color: var(--primary-dark);
}

.button.primary {
  border-color: transparent;
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 26px rgba(52, 95, 207, 0.28);
}

.button.primary:hover {
  background: var(--primary-dark);
  color: #fff;
}

.paired-teaser {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 10px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.76);
}

.hero-teaser {
  width: min(1040px, 100%);
  margin-top: 28px;
}

.paper-hero .paired-teaser {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(7, 17, 31, 0.42);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.22);
}

.paired-teaser figure,
.video-pair figure {
  position: relative;
  min-width: 0;
  margin: 0;
}

video {
  display: block;
  width: 100%;
  border-radius: 8px;
  background: #101827;
}

.paired-teaser video,
.video-pair video {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.paired-teaser figcaption,
.video-pair figcaption {
  position: absolute;
  left: 9px;
  bottom: 9px;
  max-width: calc(100% - 18px);
  margin: 0;
  padding: 5px 8px;
  border-radius: 8px;
  background: rgba(16, 24, 39, 0.78);
  color: #fff;
  font-size: 0.76rem;
  font-weight: 780;
}

.teaser-caption {
  width: min(980px, 100%);
  margin-top: 12px;
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(7, 17, 31, 0.46);
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.18);
  color: #d8e4f6;
  font-size: 0.92rem;
  line-height: 1.58;
  text-align: left;
  backdrop-filter: blur(12px) saturate(140%);
}

.teaser-caption p {
  margin: 0;
}

.teaser-caption strong {
  color: #ffffff;
  font-weight: 820;
}

.teaser-caption b {
  color: #ffffff;
  font-weight: 820;
}

.band {
  scroll-margin-top: 92px;
  padding: 72px 24px;
}

.summary,
.method,
.highlights {
  background: rgba(255, 255, 255, 0.18);
}

.motivation,
.construction,
.results,
.citation {
  background: rgba(255, 255, 255, 0.45);
}

.citation {
  padding-top: 48px;
  padding-bottom: 74px;
}

.section-head {
  margin-bottom: 28px;
}

.section-head.compact {
  max-width: none;
}

.section-head h2,
.construction h2 {
  max-width: 1120px;
  margin: 0;
  color: #1c2940;
  font-size: 2.08rem;
  font-weight: 820;
  line-height: 1.14;
  text-wrap: pretty;
}

.section-head p {
  max-width: 1060px;
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.52;
  text-wrap: pretty;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
}

.stats div {
  min-width: 0;
  padding: 20px 18px;
  border-right: 1px solid var(--line);
}

.stats div:last-child {
  border-right: 0;
}

.stats strong {
  display: block;
  color: var(--primary-dark);
  font-size: 2.35rem;
  line-height: 1;
}

.stats span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-weight: 720;
}

.motivation-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.62fr);
  gap: 22px;
  align-items: start;
}

.paper-figure-stack {
  display: grid;
  gap: 18px;
}

.results-figures {
  margin-bottom: 24px;
}

.paper-figure {
  overflow: hidden;
  background: rgba(255, 255, 255, 0.86);
}

.paper-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

figcaption,
.paper-figure figcaption {
  margin: 0;
  padding: 10px 12px 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 660;
}

.narrative-list {
  display: grid;
  gap: 0;
  padding: 2px 0;
  border-top: 1px solid var(--line);
}

.narrative-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.narrative-item h3 {
  margin: 0 0 7px;
  color: #243047;
  font-size: 1.08rem;
  font-weight: 790;
  line-height: 1.27;
}

.narrative-item p,
.video-card p,
.result-card p,
.pair-panel p {
  margin: 0;
  color: var(--muted);
}

.pair-showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.pair-panel {
  min-width: 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.78);
}

.pair-panel h3 {
  margin: 16px 18px 6px;
  color: #243047;
  font-size: 1.13rem;
  font-weight: 800;
  line-height: 1.3;
}

.pair-panel p {
  margin: 0 18px 18px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.result-card,
.video-card {
  min-width: 0;
  background: rgba(255, 255, 255, 0.82);
}

.result-card {
  padding: 20px;
}

.result-card h3,
.video-card h3 {
  margin: 0 0 8px;
  color: #243047;
  font-size: 1.14rem;
  font-weight: 800;
  line-height: 1.3;
}

.mini-stats {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
}

.mini-stats div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.mini-stats dt {
  color: var(--muted);
  font-weight: 700;
}

.mini-stats dd {
  margin: 0;
  color: var(--primary-dark);
  font-size: 1.05rem;
  font-weight: 800;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 800;
}

td {
  color: var(--muted);
}

.metric-table {
  margin-top: 12px;
  font-size: 0.9rem;
}

.metric-table td:last-child {
  color: var(--emerald);
  font-weight: 780;
}

.bar-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.bar-list div {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.bar-list span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

.bar-list b {
  display: block;
  min-width: 54px;
  padding: 6px 8px;
  border-radius: 8px;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
  color: #fff;
  font-size: 0.8rem;
  line-height: 1;
  text-align: right;
}

.model-table-wrap {
  margin-top: 22px;
  overflow-x: auto;
  background: rgba(255, 255, 255, 0.84);
}

.model-table {
  min-width: 720px;
}

.model-table tbody tr:first-child td {
  color: var(--ink);
  font-weight: 800;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.video-card {
  overflow: hidden;
}

.taxonomy-tag {
  display: inline-flex;
  width: fit-content;
  min-height: 28px;
  align-items: center;
  margin: 14px 16px 10px;
  padding: 0 10px;
  border: 1px solid rgba(52, 95, 207, 0.18);
  border-radius: 8px;
  background: rgba(52, 95, 207, 0.08);
  color: var(--primary-dark);
  font-size: 0.75rem;
  font-weight: 820;
  text-transform: uppercase;
}

.video-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(21, 38, 80, 0.12);
}

.video-pair video {
  border-radius: 0;
}

.video-card h3 {
  margin: 16px 18px 6px;
}

.video-card p {
  margin: 0 18px 18px;
}

.video-card .taxonomy-tag {
  margin: 14px 16px 10px;
  color: var(--primary-dark);
  font-size: 0.75rem;
  font-weight: 820;
  text-transform: uppercase;
}

.highlight-grid .wide {
  grid-column: 1 / -1;
}

.highlight-grid .wide .video-pair video {
  max-height: 360px;
  object-fit: cover;
}

code {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
}

pre {
  margin: 0;
  padding: 20px;
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0;
  background: var(--code);
  color: #e8f1ff;
  font-size: 0.88rem;
  line-height: 1.55;
}

.citation-box {
  overflow: hidden;
  background: var(--code);
  box-shadow: 0 18px 46px rgba(16, 24, 39, 0.18);
}

.citation-box pre {
  border: 0;
}

.copy-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: #dbeafe;
  font-size: 0.86rem;
  font-weight: 800;
}

.copy-button {
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font: inherit;
  cursor: pointer;
}

.copy-button:hover {
  border-color: rgba(255, 255, 255, 0.62);
}

@media (max-width: 980px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  nav {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .paper-hero {
    padding-top: 138px;
  }

  .paper-hero h1 {
    font-size: 3.2rem;
  }

  .paper-title {
    font-size: 1.12rem;
  }

  .paired-teaser,
  .stats,
  .motivation-layout,
  .pair-showcase-grid,
  .result-grid,
  .highlight-grid,
  .paper-figure-stack {
    grid-template-columns: 1fr;
  }

  .stats div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .stats div:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 600px) {
  .band {
    scroll-margin-top: 154px;
  }

  .topbar,
  .paper-hero,
  .band {
    padding-right: 16px;
    padding-left: 16px;
  }

  .paper-hero {
    padding-top: 172px;
  }

  nav {
    flex-wrap: wrap;
    overflow-x: visible;
    gap: 4px 8px;
  }

  nav a {
    padding: 5px 6px;
  }

  .hero-card {
    padding: 26px 18px 28px;
  }

  .paper-hero h1 {
    font-size: 2.34rem;
    line-height: 1.05;
  }

  .paper-title {
    font-size: 1rem;
  }

  .subtitle,
  .section-head p {
    font-size: 0.96rem;
  }

  .author-card {
    padding: 16px 14px 15px;
  }

  .author-line {
    gap: 4px 10px;
    font-size: 0.88rem;
    line-height: 1.42;
  }

  .affiliation-line {
    gap: 3px 9px;
    font-size: 0.72rem;
  }

  .teaser-caption {
    padding: 13px 14px;
    font-size: 0.86rem;
  }

  .section-head h2,
  .construction h2 {
    font-size: 1.64rem;
  }

  .paper-links {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

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