:root {
  --page-bg: #ffffff;
  --surface: #ffffff;
  --surface-muted: #fafafa;
  --surface-subtle: #f5f5f5;
  --border: #dbdbdb;
  --border-strong: #c9c9c9;
  --text-primary: #363636;
  --text-secondary: #5f6773;
  --text-tertiary: #8a8f98;
  --accent-blue: hsl(204, 86%, 53%);
  --accent-blue-soft: rgba(50, 115, 220, 0.08);
  --accent-green: #7da96b;
  --accent-purple: #9c7ab5;
  --accent-warm: #c6a18f;
  --radius-lg: 14px;
  --radius-md: 10px;
  --shadow-soft: 0 10px 28px rgba(10, 10, 10, 0.04);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans", sans-serif;
  color: var(--text-primary);
  background: var(--page-bg);
}

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

a {
  color: var(--accent-blue);
}

a:hover {
  color: #2366b8;
}

.dnerf {
  font-variant: small-caps;
  letter-spacing: 0.04em;
}

.author-block {
  display: inline-block;
}

.link-block a {
  margin-top: 5px;
  margin-bottom: 5px;
}

.publication-title,
.section-title,
.obs-title {
  font-family: "Google Sans", sans-serif;
}

.publication-authors,
.publication-links,
.section-kicker,
.comparison-tab,
.obs-eyebrow,
.obs-summary-label,
.obs-card-badge,
.obs-detail-label,
.obs-callout-pill {
  font-family: "Google Sans", sans-serif;
}

.site-navbar {
  position: relative;
  min-height: 3.4rem;
  background: transparent;
}

.site-navbar-start {
  flex-grow: 1;
  justify-content: center;
}

.site-navbar .navbar-item {
  gap: 0.55rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.site-navbar .navbar-item:hover {
  background: transparent;
  color: var(--accent-blue);
}

.page-hero .hero-body {
  padding-top: 1.2rem;
  padding-bottom: 1.5rem;
}

.publication-title {
  max-width: 23ch;
  margin: 0 auto 0.6rem auto;
  color: var(--text-primary);
  font-size: clamp(2.3rem, 4.7vw, 3.85rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.publication-authors {
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 0.12rem;
}

.publication-authors a {
  color: var(--accent-blue) !important;
}

.publication-authors a:hover {
  text-decoration: underline;
}

.publication-links {
  margin-top: 0.7rem;
}

.publication-links .button.is-dark {
  border: 1px solid #3a3a3a;
  background: #363636;
  box-shadow: none;
  transition: background 0.18s ease, transform 0.18s ease;
}

.publication-links .button.is-dark:hover {
  transform: translateY(-1px);
  background: #222;
}

.page-teaser .hero-body {
  padding-top: 0;
  padding-bottom: 2rem;
}

.teaser-shell {
  display: grid;
  gap: 0.95rem;
}

.teaser-frame {
  overflow: hidden;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.teaser-image {
  width: 100%;
  height: auto;
}

.teaser-subtitle {
  max-width: 54rem;
  margin: 0 auto;
  color: var(--text-secondary);
  font-family: "Noto Sans", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
}

.page-section {
  padding-top: 1.2rem;
  padding-bottom: 1.9rem;
}

.section-shell,
#observation .obs-shell {
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.section-shell::before,
.section-shell::after,
#observation .obs-shell::before,
#observation .obs-shell::after {
  content: none;
}

.section-header,
#observation .obs-header {
  margin-bottom: 1rem;
}

.section-kicker,
#observation .obs-eyebrow {
  display: block;
  margin: 0 0 0.42rem 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-tertiary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-title,
#observation .obs-title {
  margin-bottom: 0.35rem !important;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

.section-intro,
#observation .obs-subtitle {
  max-width: 48rem;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.75;
}

.section-copy {
  color: var(--text-primary);
  line-height: 1.8;
}

.responsive-figure {
  width: 100%;
  height: auto;
  margin: 0 auto;
}

.comparison-intro {
  margin: 0 auto;
}

.comparison-usage-hint {
  max-width: 50rem;
  margin: -0.1rem auto 1.15rem auto;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.comparison-showcase {
  display: grid;
  gap: 1rem;
}

.comparison-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.7rem;
}

.comparison-tab {
  min-width: 190px;
  padding: 0.7rem 0.9rem;
  border-radius: 0;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  box-shadow: none;
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.comparison-tab:hover {
  transform: translateY(-1px);
  border-color: var(--accent-blue);
}

.comparison-tab.is-active {
  border-color: var(--accent-blue);
  background: var(--accent-blue-soft);
}

.comparison-tab-label {
  display: block;
  color: var(--text-tertiary);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.comparison-tab-title {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.98rem;
  font-weight: 700;
}

.comparison-tab-meta {
  display: block;
  margin-top: 0.24rem;
  color: var(--text-secondary);
  font-size: 0.84rem;
  line-height: 1.45;
}

.comparison-stage {
  min-height: 160px;
}

.comparison-scene-panel {
  display: grid;
  gap: 1rem;
}

.comparison-scene-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  text-align: left;
}

.comparison-scene-copy {
  display: grid;
  gap: 0.16rem;
}

.comparison-scene-kicker {
  margin: 0;
  color: var(--text-tertiary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.comparison-scene-title {
  margin: 0 !important;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.comparison-scene-note {
  margin: 0;
  max-width: 33rem;
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.65;
}

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

.comparison-item {
  min-width: 0;
}

.comparison-card {
  height: 100%;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: none;
}

.comparison-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 10px;
  background: #111;
  cursor: ew-resize;
  touch-action: none;
}

.comparison-image {
  position: absolute;
  inset: 0;
}

.comparison-image video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.baseline-image {
  z-index: 1;
}

.ours-image {
  z-index: 2;
  clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);
  transition: clip-path 0.05s linear;
}

.comparison-overlay {
  position: absolute;
  top: 10px;
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.62rem;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.58);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  z-index: 8;
}

.comparison-overlay-left {
  left: 10px;
}

.comparison-overlay-right {
  right: 10px;
}

.comparison-slider {
  position: absolute;
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  background: rgba(255, 255, 255, 0.96);
  transform: translateX(-50%);
  z-index: 6;
}

.comparison-slider::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--border-strong);
  transform: translate(-50%, -50%);
}

.comparison-slider::after {
  content: "<>";
  position: absolute;
  top: 50%;
  left: 50%;
  color: var(--text-primary);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  transform: translate(-50%, -50%);
  z-index: 1;
}

#observation .obs-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin: 0 auto 1.25rem auto;
}

#observation .obs-summary-item {
  display: grid;
  gap: 0.28rem;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface-muted);
  text-align: left;
}

#observation .obs-summary-label {
  color: var(--text-tertiary);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#observation .obs-summary-value {
  color: var(--text-primary);
  font-size: 0.97rem;
  font-weight: 700;
  line-height: 1.45;
}

#observation .obs-grid {
  margin-top: 0 !important;
}

#observation .obs-card {
  --obs-accent: var(--accent-blue);
  height: 100%;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: none;
}

#observation .obs-card::before {
  content: "";
  display: block;
  height: 3px;
  background: var(--obs-accent);
}

#observation .obs-card-explicit {
  --obs-accent: var(--accent-warm);
}

#observation .obs-card-deformable {
  --obs-accent: var(--accent-green);
}

#observation .obs-card-header {
  padding: 1.05rem 1.05rem 0.9rem 1.05rem;
  display: grid;
  gap: 0.65rem;
  text-align: left;
}

#observation .obs-card-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-muted);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

#observation .obs-card-title {
  margin: 0;
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

#observation .obs-card-kicker {
  margin: 0.35rem 0 0 0;
  color: var(--text-secondary);
  font-size: 0.97rem;
  line-height: 1.62;
}

#observation .obs-media {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 238px;
  padding: 14px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface-subtle);
}

#observation .obs-media img {
  height: 100%;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  border-radius: 8px;
}

#observation .obs-body {
  padding: 1rem 1.05rem 1.05rem 1.05rem;
  display: grid;
  gap: 0.75rem;
}

#observation .obs-detail {
  padding: 0.9rem 0.95rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-muted);
  text-align: left;
}

#observation .obs-detail-impact {
  background: #fcfcfc;
}

#observation .obs-detail-label {
  margin: 0 0 0.38rem 0;
  color: var(--text-tertiary);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#observation .obs-detail-text {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.62;
}

#observation .obs-callout {
  margin-top: 1.55rem;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-blue);
  border-radius: 12px;
  background: var(--surface-muted);
  text-align: left;
}

#observation .obs-callout-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.45rem;
}

#observation .obs-callout-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.26rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#observation .obs-callout .obs-callout-title {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.02rem;
  font-weight: 700;
}

#observation .obs-callout .obs-callout-text {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.7;
}

#observation .obs-emph {
  font-weight: 700;
  color: var(--text-primary);
}

.method-figure {
  margin-bottom: 0.95rem;
  padding: 0.65rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.method-copy {
  max-width: 62rem;
  margin: 0 auto;
}

.results-stack {
  display: grid;
  gap: 1.15rem;
}

.results-card {
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: none;
}

.results-card-header {
  margin-bottom: 0.75rem;
}

.results-card-title {
  margin: 0 !important;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.results-figure {
  padding: 0.65rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-subtle);
}

.results-figure-compact .responsive-figure {
  max-width: 85%;
}

.results-copy {
  margin-top: 0.85rem;
  color: var(--text-primary);
  font-size: 0.97rem;
  line-height: 1.72;
}

.slicing-intro {
  max-width: 54rem;
}

.slicing-figure {
  max-width: 860px;
  margin: 0 auto 1.1rem auto;
}

.slicing-figure .responsive-figure {
  border: 1px solid var(--border);
  border-radius: 12px;
}

.slicing-caption {
  margin-top: 0.85rem;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.table-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0.9rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-muted);
}

.ablation-table {
  width: 100%;
  margin: 0 auto;
  font-size: 14px;
  background: transparent;
}

.ablation-table th,
.ablation-table td {
  text-align: center;
  vertical-align: middle;
  padding: 7px 12px;
  white-space: nowrap;
}

.table-caption {
  margin-top: 0.85rem;
  font-size: 0.86rem;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.6;
}

.refinement-intro {
  max-width: 56rem;
}

.refinement-video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.refinement-card {
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.refinement-card-header {
  padding: 0.95rem 1rem 0.8rem 1rem;
  text-align: left;
}

.refinement-card-kicker {
  margin: 0 0 0.24rem 0;
  color: var(--text-tertiary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.refinement-card-title {
  margin: 0 !important;
  color: var(--text-primary);
}

.refinement-video-frame {
  aspect-ratio: 4 / 3;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: #111;
}

.refinement-video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.refinement-card-body {
  padding: 0.9rem 1rem 1rem 1rem;
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.66;
}

.refinement-summary {
  max-width: 58rem;
  margin: 0 auto;
}

.bibtex-shell pre {
  margin: 0;
  padding: 1rem 1.1rem;
  border-radius: 0;
  border: 1px solid #ececec;
  background: #f5f5f5;
  color: #4a4a4a;
  overflow-x: auto;
  box-shadow: none;
}

.bibtex-shell code {
  color: inherit;
  background: transparent;
  white-space: pre;
}

.site-footer {
  padding-top: 0.8rem;
  padding-bottom: 2.5rem;
  background: transparent;
}

.site-footer .icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin: 0 0.25rem;
  border-radius: 999px;
  color: #000;
  font-size: 1.15rem;
  transition: color 0.18s ease, transform 0.18s ease;
}

.site-footer .icon-link:hover {
  transform: translateY(-1px);
  color: var(--accent-blue);
}

.site-footer .content {
  color: var(--text-secondary);
}

@media (max-width: 1024px) {
  .comparison-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .comparison-scene-header {
    align-items: flex-start;
  }

  #observation .obs-summary {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .page-hero .hero-body {
    padding-top: 0.9rem;
    padding-bottom: 1.3rem;
  }

  .publication-title {
    max-width: 100%;
    font-size: clamp(2.05rem, 9vw, 3rem);
  }

  .page-section {
    padding-bottom: 1.5rem;
  }

  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .comparison-tab {
    min-width: 0;
    width: 100%;
    border-radius: 0;
  }

  .comparison-card {
    padding: 8px;
  }

  .comparison-overlay {
    top: 8px;
    font-size: 0.64rem;
  }

  .comparison-overlay-left {
    left: 8px;
  }

  .comparison-overlay-right {
    right: 8px;
  }

  .comparison-slider::before {
    width: 32px;
    height: 32px;
  }

  #observation .obs-title {
    font-size: 1.85rem;
  }

  #observation .obs-media {
    height: 220px;
    padding: 12px;
  }

  .results-card {
    padding: 0.9rem;
  }

  .results-figure-compact .responsive-figure {
    max-width: 100%;
  }

  .table-wrap {
    padding: 0.75rem;
  }

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