:root {
  --surface-primary: #f7f5ef;
  --surface-secondary: #ffffff;
  --surface-elevated: #f0eee6;
  --text-primary: #1f241b;
  --text-secondary: #596052;
  --text-tertiary: #7b8373;
  --border-default: #d8d4c8;
  --border-subtle: #e8e3d8;
  --accent-primary: #2f6f5e;
  --accent-secondary: #355f9c;
  --accent-warm: #8f4d2c;
  --status-success: #2f6f5e;
  --status-warning: #b66a3c;
  --status-error: #a64035;
  --status-info: #355f9c;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --container: 1240px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

body.nav-open {
  overflow: hidden;
}

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

img {
  display: block;
  width: 100%;
  height: auto;
}

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

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent-primary) 74%, white);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  top: var(--space-4);
  left: -9999px;
  z-index: 100;
  background: var(--text-primary);
  color: var(--surface-primary);
  padding: var(--space-3) var(--space-4);
}

.skip-link:focus {
  position: fixed;
  left: var(--space-4);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: var(--space-3) var(--space-4);
  transition: background 220ms ease-in-out, box-shadow 220ms ease-in-out, border-color 220ms ease-in-out;
}

.site-header.is-scrolled {
  background: color-mix(in srgb, var(--surface-primary) 88%, transparent);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 12px 36px rgba(31, 36, 27, 0.08);
  backdrop-filter: blur(18px);
}

.nav-shell {
  max-width: var(--container);
  margin: 0 auto;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 14px;
  font-weight: 760;
}

.brand-mark {
  width: 28px;
  aspect-ratio: 1;
  border: 2px solid var(--text-primary);
  background:
    linear-gradient(90deg, transparent 44%, var(--accent-primary) 44% 56%, transparent 56%),
    linear-gradient(0deg, transparent 44%, var(--accent-secondary) 44% 56%, transparent 56%),
    var(--surface-secondary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-links a {
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 650;
  padding: var(--space-2) var(--space-3);
  transition: color 180ms ease-out, border-color 180ms ease-out, background 180ms ease-out;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--text-primary);
  background: var(--surface-secondary);
  border-color: var(--border-subtle);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border-default);
  background: var(--surface-secondary);
  color: var(--text-primary);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  padding: var(--space-2) var(--space-3);
}

.section-pad {
  padding: var(--space-20) var(--space-4);
}

.hero {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  gap: var(--space-6);
  align-items: start;
  text-align: center;
}

.hero-copy {
  display: grid;
  gap: var(--space-3);
  justify-items: center;
}

.eyebrow {
  margin: 0;
  color: var(--accent-warm);
  font-size: 11px;
  font-weight: 760;
  line-height: 1.3;
  text-transform: uppercase;
}

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

h1 {
  max-width: 100%;
  margin-bottom: 0;
  font-weight: 760;
  line-height: 1.18;
}

#hero-title {
  display: grid;
  gap: var(--space-3);
  justify-items: center;
}

.title-brand {
  display: block;
  position: relative;
  color: var(--text-primary);
  font-size: clamp(48px, 9vw, 118px);
  font-weight: 820;
  line-height: 0.9;
}

.title-brand::before,
.title-brand::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary), var(--accent-warm));
}

.title-brand::before {
  top: -10px;
}

.title-brand::after {
  bottom: -10px;
}

.title-subtitle {
  display: block;
  color: var(--text-secondary);
  font-size: clamp(22px, 2.45vw, 34px);
  font-weight: 760;
  line-height: 1.12;
}

.venue-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--accent-warm) 42%, var(--border-default));
  background: color-mix(in srgb, var(--accent-warm) 10%, var(--surface-secondary));
  color: var(--accent-warm);
  font-size: 18px;
  font-weight: 760;
  line-height: 1.3;
  padding: var(--space-2) var(--space-5);
}

h2 {
  margin-bottom: 0;
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 720;
  line-height: 1.15;
}

h3 {
  margin-bottom: var(--space-2);
  font-size: 21px;
  font-weight: 680;
  line-height: 1.3;
}

.hero-lede {
  max-width: 760px;
  margin-bottom: 0;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-secondary);
  font-size: 19px;
  line-height: 1.65;
}

.author-block {
  display: grid;
  gap: var(--space-2);
  color: var(--text-secondary);
  justify-items: center;
}

.author-block p {
  margin-bottom: 0;
}

.author-line {
  color: var(--text-primary);
  max-width: 920px;
  font-weight: 650;
  font-size: 15px;
}

.affiliation-line {
  max-width: 920px;
  color: var(--text-secondary);
  font-size: 14px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-default);
  background: var(--surface-secondary);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 760;
  padding: var(--space-3) var(--space-5);
  transition: transform 120ms ease-out, background 180ms ease-out, border-color 180ms ease-out, color 180ms ease-out;
}

.button:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-1px);
}

.button:active,
.resource-card:active {
  transform: translateY(1px);
}

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

.button.primary:hover {
  background: color-mix(in srgb, var(--accent-primary) 86%, black);
  color: var(--surface-secondary);
}

.button.ghost {
  background: transparent;
}

.button.hf-button {
  border-color: #d8791f;
  background: #f59e0b;
  color: #21170a;
}

.button.hf-button:hover {
  border-color: #b86116;
  background: #e38a06;
  color: #21170a;
}

.hero-figure,
.figure-panel {
  margin: 0;
  border: 1px solid var(--border-default);
  background: var(--surface-secondary);
  box-shadow: 0 1px 0 rgba(31, 36, 27, 0.04);
}

.hero-figure {
  overflow: hidden;
}

.hero-figure > img {
  padding: var(--space-3);
}

.hero-meta {
  display: grid;
  gap: var(--space-5);
  justify-items: center;
  margin-top: var(--space-2);
}

figcaption {
  border-top: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
  padding: var(--space-4);
}

.section {
  border-top: 1px solid var(--border-subtle);
}

.section > * {
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
}

.alt {
  background: var(--surface-elevated);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.45fr) minmax(0, 0.75fr);
  gap: var(--space-8);
  align-items: end;
  margin-bottom: var(--space-10);
}

.section-heading.narrow {
  display: block;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-heading p:not(.eyebrow) {
  margin: var(--space-4) auto 0;
  color: var(--text-secondary);
  font-size: 19px;
}

.abstract-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(320px, 0.64fr);
  gap: var(--space-8);
  align-items: stretch;
}

.abstract-text {
  border-left: 3px solid var(--accent-primary);
  padding-left: var(--space-6);
}

.abstract-text p {
  color: var(--text-secondary);
  font-size: 19px;
}

.abstract-text p:last-child {
  margin-bottom: 0;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--border-default);
  background: var(--surface-secondary);
}

.stat {
  min-height: 148px;
  padding: var(--space-6);
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.stat:nth-child(2n) {
  border-right: 0;
}

.stat:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.stat span,
.highlight-metrics span {
  display: block;
  color: var(--accent-primary);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 760;
  line-height: 1;
}

.stat p,
.highlight-metrics p {
  margin: var(--space-3) 0 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.contribution-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: var(--space-12);
  border: 1px solid var(--border-default);
  background: var(--surface-secondary);
}

.contribution-row article {
  padding: var(--space-6);
  border-right: 1px solid var(--border-subtle);
}

.contribution-row article:last-child {
  border-right: 0;
}

.contribution-row span,
.resource-card span {
  display: inline-block;
  color: var(--accent-secondary);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.contribution-row p {
  margin-bottom: 0;
  color: var(--text-secondary);
}

.figure-panel {
  overflow: hidden;
}

.figure-panel > img {
  display: block;
  padding: var(--space-4);
}

.figure-panel.wide {
  margin-top: var(--space-10);
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(320px, 0.55fr);
  gap: var(--space-10);
  align-items: end;
  margin-bottom: var(--space-10);
}

.split-section p:not(.eyebrow) {
  max-width: 760px;
  color: var(--text-secondary);
  font-size: 19px;
}

.metric-strip {
  display: grid;
  border: 1px solid var(--border-default);
  background: var(--surface-secondary);
}

.metric-strip div {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: var(--space-4);
  padding: var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
}

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

.metric-strip strong {
  color: var(--accent-primary);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.metric-strip span {
  color: var(--text-secondary);
}

.scene-showcase {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.scene-showcase {
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
  grid-template-columns: minmax(0, 0.72fr) minmax(420px, 0.88fr);
  align-items: stretch;
}

.scene-stack {
  display: grid;
  gap: var(--space-6);
  grid-template-rows: minmax(0, 1fr) minmax(0, 0.72fr);
  min-height: 740px;
}

.scene-panel {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  background: var(--surface-secondary);
}

.themes-panel {
  width: 100%;
  max-width: none;
  justify-self: end;
}

.scene-panel > img {
  width: 100%;
  object-fit: contain;
}

.metadata-panel > img,
.osg-panel > img {
  height: 100%;
  max-height: 100%;
  aspect-ratio: auto;
}

.themes-panel > img {
  height: 740px;
  max-height: 740px;
}

.scene-panel figcaption {
  display: grid;
  gap: var(--space-2);
}

.scene-panel figcaption strong {
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.3;
}

.scene-panel figcaption span {
  color: var(--text-secondary);
}

.result-block {
  display: grid;
  gap: var(--space-6);
  max-width: var(--container);
  margin-top: var(--space-12);
  margin-left: auto;
  margin-right: auto;
}

.result-block-header {
  max-width: 920px;
}

.result-block-header p:not(.eyebrow) {
  margin-bottom: 0;
  color: var(--text-secondary);
  font-size: 19px;
}

.result-block-header p + p {
  margin-top: var(--space-4);
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border-default);
  background: var(--surface-secondary);
}

.results-table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
  font-size: 13px;
  line-height: 1.35;
}

.compact-table .results-table {
  min-width: 820px;
}

.results-table th,
.results-table td {
  border-bottom: 1px solid var(--border-subtle);
  padding: 9px 10px;
  text-align: right;
  vertical-align: middle;
  white-space: nowrap;
}

.results-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--text-primary);
  color: var(--surface-primary);
  font-weight: 760;
}

.results-table th:first-child,
.results-table td:first-child {
  text-align: left;
}

.results-table tbody th {
  color: var(--text-primary);
  font-weight: 650;
}

.results-table tbody td {
  color: var(--text-secondary);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.results-table .group-row th {
  background: var(--surface-elevated);
  color: var(--accent-secondary);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  text-transform: uppercase;
}

.results-table .ours-group th {
  color: var(--accent-primary);
}

.results-table .best-row th,
.results-table .best-row td {
  background: color-mix(in srgb, var(--accent-primary) 10%, var(--surface-secondary));
  color: var(--text-primary);
  font-weight: 760;
}

.highlight-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--border-default);
  background: var(--surface-secondary);
}

.highlight-metrics div {
  padding: var(--space-5);
  border-right: 1px solid var(--border-subtle);
}

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

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

.scaling-block {
  margin-top: var(--space-16);
}

.scaling-figure > img {
  padding: var(--space-4);
}

.scaling-figure {
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.resource-card {
  min-height: 196px;
  border: 1px solid var(--border-default);
  background: var(--surface-secondary);
  padding: var(--space-6);
  transition: transform 120ms ease-out, background 180ms ease-out, border-color 180ms ease-out;
}

.resource-card:hover {
  border-color: var(--accent-primary);
  background: color-mix(in srgb, var(--surface-secondary) 86%, var(--surface-elevated));
  transform: translateY(-1px);
}

.resource-card strong {
  display: block;
  font-size: 21px;
  line-height: 1.3;
}

.resource-card p {
  margin: var(--space-4) 0 0;
  color: var(--text-secondary);
}

.citation-shell {
  display: grid;
  gap: var(--space-4);
}

pre {
  margin: 0;
  overflow-x: auto;
  border: 1px solid var(--border-default);
  background: var(--text-primary);
  color: var(--surface-primary);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 14px;
  line-height: 1.7;
  padding: var(--space-6);
}

.copy-button {
  justify-self: start;
}

.copy-status {
  min-height: 22px;
  margin: 0;
  color: var(--status-success);
  font-size: 14px;
  font-weight: 650;
}

.copy-status.is-error {
  color: var(--status-error);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: var(--space-8) var(--space-4);
}

.site-footer p,
.site-footer a {
  margin: 0;
}

.site-footer a {
  font-weight: 700;
}

@media (min-width: 1081px) {
  .title-subtitle {
    white-space: nowrap;
  }
}

@media (max-width: 1080px) {
  .hero,
  .abstract-grid,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .contribution-row,
  .resource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scene-showcase {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 0.72fr);
  }
}

@media (max-width: 900px) {
  body.nav-open .nav-links {
    display: grid;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: fixed;
    inset: 72px var(--space-4) auto;
    display: none;
    grid-template-columns: 1fr;
    gap: var(--space-2);
    border: 1px solid var(--border-default);
    background: var(--surface-secondary);
    padding: var(--space-3);
    box-shadow: 0 12px 36px rgba(31, 36, 27, 0.08);
  }

  .nav-links a {
    padding: var(--space-3) var(--space-4);
  }

  .scene-showcase {
    grid-template-columns: 1fr;
  }

  .scene-stack {
    min-height: 0;
  }

  .themes-panel {
    max-width: none;
    justify-self: stretch;
  }

  .themes-panel > img,
  .metadata-panel > img,
  .osg-panel > img {
    height: auto;
    max-height: none;
  }
}

@media (max-width: 760px) {
  .site-header {
    padding: var(--space-2) var(--space-4);
  }

  .section-pad {
    padding: var(--space-16) var(--space-4);
  }

  .hero {
    gap: var(--space-8);
    padding-top: var(--space-10);
  }

  h1 {
    font-size: clamp(40px, 12vw, 58px);
  }

  .hero-actions,
  .site-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .section-heading {
    display: block;
  }

  .section-heading .eyebrow {
    margin-bottom: var(--space-3);
  }

  .stat-grid,
  .contribution-row,
  .scene-showcase,
  .resource-grid,
  .highlight-metrics {
    grid-template-columns: 1fr;
  }

  .metadata-panel,
  .themes-panel {
    max-width: none;
    margin-top: 0;
    justify-self: stretch;
  }

  .stat,
  .stat:nth-child(2n),
  .stat:nth-last-child(-n + 2),
  .contribution-row article,
  .highlight-metrics div {
    border-right: 0;
    border-bottom: 1px solid var(--border-subtle);
  }

  .stat:last-child,
  .contribution-row article:last-child,
  .highlight-metrics div:last-child {
    border-bottom: 0;
  }

  .abstract-text {
    padding-left: var(--space-4);
  }

  .metric-strip div {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }

  pre {
    font-size: 12px;
    padding: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
  }
}