:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --accent-color: #0ea5e9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --background-primary: #ffffff;
  --background-secondary: #f8fafc;
  --background-accent: #f1f5f9;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --bg: var(--background-secondary);
  --panel: var(--background-primary);
  --panel-alt: var(--background-accent);
  --text: var(--text-primary);
  --muted: var(--text-secondary);
  --line: var(--border-color);
  --blue: #2563eb;
  --blue-soft: #dbeafe;
  --cyan: var(--accent-color);
  --green: #059669;
  --orange: #ea580c;
  --red: #dc2626;
  --shadow: var(--shadow-md);
  --radius: var(--border-radius);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--background-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.button {
  border-radius: var(--border-radius) !important;
  font-weight: 600 !important;
  transition: var(--transition) !important;
  border: 2px solid transparent !important;
  position: relative;
  overflow: hidden;
}

.button.is-dark {
  background: var(--text-primary) !important;
  border: none !important;
  color: #ffffff !important;
  box-shadow: var(--shadow-md);
}

.button.is-dark:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: var(--primary-color) !important;
}

.button.is-dark:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.hero {
  position: relative;
  overflow: hidden;
}

.top-hero {
  background: var(--background-primary);
}

.hero-body {
  padding: 4rem 1.5rem;
}

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

.publication-title {
  font-family: 'Inter', sans-serif !important;
  font-weight: 800 !important;
  color: var(--text-primary) !important;
  margin-bottom: 2rem !important;
  line-height: 1.1 !important;
}

.publication-authors-inline {
  max-width: 960px;
  margin: -0.6rem auto 0.8rem;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
}

.publication-affiliations {
  font-family: 'Inter', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin: -0.8rem auto 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.publication-affiliations span {
  display: block;
}

.hero-demo-link-wrap {
  margin: -0.5rem 0 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.hero-demo-link {
  min-width: 160px;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
}

.hero-demo-link .icon {
  width: 1.15rem;
  height: 1.15rem;
  margin-left: 0;
  margin-right: 0;
}

.hero-demo-link .icon i,
.hero-demo-link .icon svg {
  font-size: 1rem;
}

.hero-demo-link .icon img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.hf-icon {
  width: 1.15rem;
  height: 1.15rem;
}

.app-intro {
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto;
}

.section-kicker,
.panel-kicker {
  margin: 0 0 0.75rem;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-color);
}

.section-copy {
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 760px;
  margin: 0.75rem auto 0;
  text-align: center;
}

.section-note {
  max-width: 760px;
  margin: 0.7rem auto 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  text-align: center;
}

.section-note a {
  color: var(--primary-color);
  font-weight: 700;
  text-decoration: none;
}

.section-note a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.metric-grid {
  display: grid;
  gap: 0.9rem;
}

.metric-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.metric-label {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
}

.metric-value {
  display: block;
  margin-top: 0.25rem;
  font-size: 1.45rem;
  font-weight: 800;
}

.section-soft {
  background: var(--background-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-heading {
  margin-bottom: 1.5rem;
  text-align: center;
}

.section-title {
  margin: 0;
  padding: 0;
}

.title.is-3 {
  font-family: 'Inter', sans-serif !important;
  font-weight: 700 !important;
  color: var(--text-primary);
}

.info-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: 1.25rem;
}

.paper-overview-section {
  padding-top: 2rem;
}

.paper-summary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
}

.abstract-panel,
.highlight-panel {
  padding: 1.5rem;
}

.abstract-panel {
  background:
    radial-gradient(circle at top left, rgba(14, 165, 233, 0.1), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.abstract-copy {
  margin: 0;
  font-size: 1.03rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.highlight-panel {
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.1), transparent 36%),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.highlight-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text-secondary);
}

.highlight-list li + li {
  margin-top: 0.9rem;
}

.architecture-panel {
  padding: 1.5rem;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.04), rgba(14, 165, 233, 0.02)),
    #ffffff;
}

.architecture-copy {
  max-width: 860px;
}

.architecture-copy-text {
  margin: 0.75rem 0 0;
  text-align: left;
}

.figure-shell {
  margin-top: 1.25rem;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(241, 245, 249, 0.95));
  box-shadow: var(--shadow-sm);
}

.architecture-figure-link {
  display: block;
  width: 100%;
  background: #ffffff;
}

.architecture-image {
  display: block;
  width: 100%;
  height: auto;
  transition: var(--transition);
}

.architecture-figure-link:hover .architecture-image {
  transform: scale(1.01);
}

.figure-caption {
  margin: 1rem 0 0;
  color: var(--text-secondary);
  line-height: 1.7;
}

.panel-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.panel-list li + li {
  margin-top: 0.5rem;
}

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

.overview-panel {
  display: grid;
  gap: 1.1rem;
}

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

.metric-card {
  padding: 0.95rem;
}

.emotion-tags-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

.emotion-tag {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2.65rem;
  padding: 0.5rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--emotion-border, var(--line));
  background: var(--emotion-bg, #f8fafc);
  color: var(--emotion-text, var(--text));
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
}

.emotion-tag span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.va-panel {
  padding: 1rem;
}

.va-scatter {
  position: relative;
  min-height: 0;
}

.va-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(220px, 0.45fr);
  align-items: stretch;
  gap: 1rem;
}

.va-plot-wrap {
  min-width: 0;
  height: 100%;
}

.va-legend {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.4rem;
  align-content: stretch;
  height: 100%;
}

.va-legend-column {
  display: grid;
  grid-template-rows: repeat(6, minmax(0, 1fr));
  gap: 0.4rem;
  align-content: stretch;
  justify-items: stretch;
  height: 100%;
}

.va-legend-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 0;
  padding: 0.35rem 0.45rem;
  border-radius: 8px;
  border: 1px solid var(--emotion-border, var(--line));
  background: var(--emotion-bg, #f8fafc);
  color: var(--emotion-text, var(--text));
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.12;
  text-align: center;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

.va-legend-button:hover {
  transform: translateX(-2px);
}

.va-legend-button.is-active {
  border-color: var(--emotion-point, var(--orange));
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.va-legend-button.is-dimmed {
  opacity: 0.5;
}

.va-legend-label {
  min-width: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.va-svg {
  width: 100%;
  height: 500px;
  display: block;
}

.axis-label {
  fill: #334155;
  font-size: 12px;
  font-weight: 700;
}

.tick-label {
  fill: #64748b;
  font-size: 10px;
  font-weight: 500;
}

.grid-line {
  stroke: #e8eef5;
  stroke-width: 1;
}

.plot-border {
  fill: none;
  stroke: #cbd5e1;
  stroke-width: 1.4;
}

.scatter-point {
  cursor: pointer;
  outline: none;
}

.scatter-point circle {
  fill: var(--point-color, #0f172a);
  stroke: #ffffff;
  stroke-width: 1.2;
  opacity: 0.9;
  transition: fill 0.15s ease, opacity 0.15s ease, r 0.15s ease, stroke-width 0.15s ease;
}

.scatter-point.is-dimmed circle {
  opacity: 0.12;
}

.scatter-point.is-focused circle,
.scatter-point.is-emotion-active circle,
.scatter-point:hover circle {
  opacity: 1;
  r: 5.2;
  stroke-width: 1.8;
}

.active-case-wrap {
  margin-top: 1rem;
}

.active-case-wrap.is-hidden {
  display: none;
}

.case-card {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(0, 1.05fr);
  gap: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.active-case-card {
  grid-template-columns: 1fr;
  gap: 0.9rem;
}

.active-audio-row {
  width: 100%;
}

.case-media {
  display: grid;
  gap: 0.75rem;
}

.case-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #f8fafc;
}

.emotion-meta-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
}

.meta-pill {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2.6rem;
  padding: 0.55rem 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #f8fafc;
  color: #1e293b;
  font-size: 0.95rem;
  font-weight: 700;
  text-align: center;
  overflow-wrap: anywhere;
}

.meta-pill.is-emotion {
  background: var(--emotion-bg, #eff6ff);
  border-color: var(--emotion-border, #bfdbfe);
  color: var(--emotion-text, #1d4ed8);
}

.meta-pill.is-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', monospace;
  font-size: 0.95rem;
  letter-spacing: 0;
}

.audio-player {
  width: 100%;
}

.case-content-row {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(0, 1.05fr);
  gap: 1rem;
  align-items: start;
}

.case-body {
  display: grid;
  gap: 0.75rem;
  min-width: 0;
  align-content: start;
}

.caption-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.text-label {
  margin: 0;
  font-size: 0.86rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.lang-switch {
  display: inline-flex;
  gap: 0.45rem;
}

.lang-btn {
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--muted);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.lang-btn.is-active {
  background: var(--blue);
  border-color: var(--blue);
  color: #ffffff;
}

.meta-block {
  padding: 0.75rem 0.8rem;
  border-radius: 8px;
  background: #f8fafc;
  border: 1px solid var(--line);
}

.meta-label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.meta-value {
  display: block;
  margin-top: 0.25rem;
  line-height: 1.55;
  font-size: 0.95rem;
  word-break: break-word;
}

.text-copy {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.95rem;
}

.scroll-top-btn {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 20;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.96);
  color: var(--text);
  padding: 0.7rem 0.9rem;
  font-weight: 700;
  box-shadow: var(--shadow);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.scroll-top-btn.is-visible {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 1024px) {
  .paper-summary-grid {
    grid-template-columns: 1fr;
  }

  .case-content-row {
    grid-template-columns: 1fr;
  }

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

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

  .va-layout {
    grid-template-columns: 1fr;
  }

  .va-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding-top: 0;
  }

  .va-legend-column {
    grid-template-rows: repeat(6, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .hero-body {
    padding: 3.5rem 1rem 2.2rem;
  }

  .publication-title {
    font-size: 1.9rem !important;
  }

  .publication-affiliations {
    font-size: 0.92rem;
  }

  .hero-demo-link {
    min-width: 0;
    width: 100%;
  }

  .abstract-panel,
  .highlight-panel,
  .architecture-panel {
    padding: 1rem;
  }

  .architecture-copy-text {
    text-align: center;
  }

  .metric-grid,
  .meta-grid {
    grid-template-columns: 1fr;
  }

  .overview-metrics {
    grid-template-columns: 1fr;
  }

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

  .va-svg {
    height: 440px;
  }

  .va-legend {
    grid-template-columns: 1fr;
  }

  .va-legend-column {
    grid-template-rows: none;
    height: auto;
  }

  .va-legend-button {
    width: 100%;
    height: auto;
    padding: 0.35rem 0.65rem;
  }

  .case-card,
  .info-panel {
    padding: 0.9rem;
  }
}