:root {
  --bg: #ffffff;
  --bg-soft: #f1f5f9;
  --surface: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --ring: rgba(37, 99, 235, 0.35);
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(16, 24, 40, 0.1), 0 2px 4px -2px rgba(16, 24, 40, 0.1);
  --shadow-lg: 0 12px 32px rgba(16, 24, 40, 0.08);
  --radius: 12px;
  --font: "Inter", "DM Sans", system-ui, -apple-system, Segoe UI, sans-serif;
  --max: 1080px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
  background: rgba(0, 0, 0, 0.06);
  padding: 0.12em 0.35em;
  border-radius: 6px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
}

.btn-pub {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.6rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  background: var(--text);
  color: #fff;
  border: 2px solid transparent;
  cursor: pointer;
  font-family: inherit;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.btn-pub .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1em;
  line-height: 1;
}

.btn-pub .icon i {
  display: block;
}

.btn-pub-label {
  display: inline-block;
}

.btn-pub:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-pub:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.hero {
  padding: 4rem 0 2.5rem;
  text-align: center;
}

.publication-title {
  margin: 0 0 1.25rem;
  font-size: clamp(1.85rem, 4.5vw, 2.85rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--text);
}

.publication-authors {
  margin: 0 auto 0.5rem;
  font-size: 1.05rem;
  color: var(--text);
  max-width: 80ch;
  line-height: 1.6;
}

.publication-authors .author-block {
  display: inline-block;
  margin: 0 0.15rem;
  white-space: nowrap;
}

.publication-authors a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.publication-authors a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.publication-authors sup,
.publication-affiliations sup {
  font-size: 0.7em;
  margin-left: 0.05em;
  font-weight: 600;
  color: var(--text);
}

.publication-affiliations {
  margin: 0 auto 0.85rem;
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 70ch;
  line-height: 1.5;
}

.publication-affiliations .aff-block {
  display: inline-block;
  margin: 0 0.55rem;
  white-space: nowrap;
}

.publication-affiliations sup {
  color: var(--muted);
  margin-right: 0.15em;
}

.publication-venue {
  margin: 0 auto 1.5rem;
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.5;
  max-width: 60ch;
}

.publication-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0;
}

.teaser {
  padding: 0.5rem 0 2.5rem;
}

.teaser-figure {
  margin: 0 auto;
  max-width: 960px;
  text-align: center;
}

.teaser-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  background: var(--bg-soft);
}

.teaser-caption {
  margin: 0.85rem auto 0;
  font-size: 0.95rem;
  color: var(--muted);
  max-width: 70ch;
  line-height: 1.5;
}

.section {
  margin-top: 0;
  padding: 3rem 0;
  scroll-margin-top: 1.5rem;
}

.section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.4rem, 2.4vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
}

.section-lead {
  margin: 0 auto 1.5rem;
  color: var(--muted);
  max-width: 70ch;
  text-align: center;
}

.section-light {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  padding-left: max(1.25rem, calc(50vw - var(--max) / 2));
  padding-right: max(1.25rem, calc(50vw - var(--max) / 2));
}

.prose {
  max-width: 70ch;
  margin: 0 auto;
}

.prose p {
  margin: 0 0 1rem;
}

.prose h3.prose-sub {
  margin: 1.5rem 0 0.4rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.formula-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0 1rem;
  box-shadow: var(--shadow);
}

.formula-block .formula {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.4rem 0 0.4rem;
  text-align: center;
}

.formula-block mjx-container[display="true"] {
  font-size: 1.2em;
}

.formula-legend {
  display: grid;
  grid-template-columns: minmax(140px, max-content) 1fr;
  gap: 0.45rem 1rem;
  margin: 0.85rem 0 0;
  padding: 0.75rem 0 0;
  border-top: 1px dashed var(--border);
  font-size: 0.92rem;
  line-height: 1.55;
}

.formula-legend dt {
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  align-self: start;
}

.formula-legend dd {
  margin: 0;
  color: var(--text);
}

.formula-note {
  margin: 0.85rem 0 0;
  padding: 0.55rem 0.85rem;
  background: var(--bg-soft);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.55;
}

@media (max-width: 540px) {
  .formula-legend {
    grid-template-columns: 1fr;
  }
  .formula-legend dt {
    margin-top: 0.4rem;
  }
}

.examples-carousel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.examples-header-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin: 0.25rem 0 0.5rem;
}

.examples-header-row .examples-header {
  margin: 0;
  flex: 0 1 auto;
  min-width: 0;
}

.examples-header {
  text-align: center;
  margin: 0.25rem 0 0.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

@media (max-width: 540px) {
  .examples-header-row {
    gap: 0.75rem;
  }
}

.examples-header-eyebrow {
  margin: 0;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.examples-header-scale {
  margin: 0;
  font-family: "DM Sans", var(--font);
  font-size: clamp(1.4rem, 2.2vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1.2;
}

.examples-header-scale .scale-sep {
  display: inline-block;
  margin: 0 0.45rem;
  color: var(--accent);
  font-weight: 500;
}

.examples-header-counter {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.18rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
  font-size: 0.78rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.examples-header-counter strong {
  color: var(--accent);
  font-weight: 700;
}

.examples-stage {
  position: relative;
  min-height: 320px;
}

.examples-stage > .scenario-card {
  margin-bottom: 0;
  animation: ex-fade-in 0.18s ease-out;
}

@keyframes ex-fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.examples-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.examples-arrow {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1.1rem;
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm, var(--shadow));
  transition: var(--transition);
}

.examples-arrow:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.examples-arrow:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.examples-dots {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  justify-content: center;
}

.examples-dots .ex-dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.examples-dots .ex-dot:hover {
  background: var(--accent);
}

.examples-dots .ex-dot.is-active {
  background: var(--accent);
  transform: scale(1.35);
}

.examples-dots .ex-dot:focus-visible,
.examples-arrow:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.scenario-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  margin: 0 0 1.5rem;
}

.scenario-card:last-child {
  margin-bottom: 0;
}

.scenario-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 0 0 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border);
}

.scenario-title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.scenario-eq-badge {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.scenario-info {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 0 0 1.25rem;
}

.scenario-info .info-item {
  background: var(--bg-soft);
  padding: 0.75rem 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.scenario-info .info-item strong {
  display: block;
  margin: 0 0 0.25rem;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
}

.scenario-info .info-item p {
  margin: 0;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.5;
}

.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.25rem;
}

.speaker-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
}

.speaker-card h4 {
  margin: 0 0 0.2rem;
  font-size: 1rem;
  color: var(--accent);
  font-weight: 700;
}

.speaker-meta {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.persona-box {
  margin-top: 0.5rem;
  padding: 0.55rem 0.7rem;
  background: var(--surface);
  border-radius: 6px;
  border-left: 3px solid var(--accent);
}

.persona-box.persona-high {
  border-left-color: #2e7d32;
}

.persona-box.persona-low {
  border-left-color: #c62828;
}

.persona-box strong {
  display: block;
  margin: 0 0 0.2rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
}

.persona-box p {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--muted);
}

.conversation-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.conv-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
}

.conv-item-critical {
  border-left-color: var(--accent);
  background: var(--bg-soft);
}

.conv-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin: 0 0 0.4rem;
}

.sentence-number {
  font-weight: 700;
  color: var(--accent);
  font-size: 0.85rem;
}

.speaker-badge {
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.speaker-badge.speaker-1 {
  background: #e3f2fd;
  color: #1565c0;
}

.speaker-badge.speaker-2 {
  background: #fce4ec;
  color: #ad1457;
}

.critical-badge {
  margin-left: auto;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: var(--accent);
  color: #fff;
  text-transform: uppercase;
}

.conv-text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text);
}

.audio-pair {
  margin: 0.75rem 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.5rem;
}

.audio-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.audio-row audio {
  flex: 1;
  height: 36px;
  min-width: 0;
}

.audio-row-single {
  margin-top: 0.6rem;
}

.eq-badge {
  flex-shrink: 0;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.eq-badge.eq-high {
  background: #c8e6c9;
  color: #1b5e20;
}

.eq-badge.eq-low {
  background: #ffcdd2;
  color: #b71c1c;
}

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.leaderboard {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.leaderboard th,
.leaderboard td {
  padding: 0.5rem 0.45rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.leaderboard .th-main {
  font-size: 0.78rem;
  line-height: 1.25;
  white-space: normal;
  max-width: 7.5rem;
  vertical-align: bottom;
}

.leaderboard .td-seq {
  font-weight: 600;
  color: var(--accent);
}

.leaderboard thead th {
  background: var(--bg-soft);
  font-weight: 600;
  color: var(--text);
}

.leaderboard tbody tr:hover {
  background: var(--bg-soft);
}

.leaderboard tbody tr:last-child td {
  border-bottom: none;
}

th.sortable {
  cursor: pointer;
  user-select: none;
  position: relative;
  padding-right: 1.35rem;
}

th.sortable:hover {
  color: var(--accent);
}

th.sortable::after {
  content: "";
  position: absolute;
  right: 0.45rem;
  top: 50%;
  margin-top: -0.35rem;
  border: 4px solid transparent;
  border-top-color: var(--border);
  opacity: 0.6;
}

th.sortable.sort-asc::after {
  border-top-color: transparent;
  border-bottom-color: var(--accent);
  margin-top: -0.55rem;
  opacity: 1;
}

th.sortable.sort-desc::after {
  border-top-color: var(--accent);
  opacity: 1;
}

.radar-toggle-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.45rem;
  margin: 0 auto 1rem;
  max-width: min(760px, 100%);
}

.radar-toggle {
  --chip-color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.radar-toggle:hover {
  border-color: var(--chip-color);
  color: var(--text);
}

.radar-toggle.is-on {
  background: var(--chip-color);
  border-color: var(--chip-color);
  color: #fff;
}

.radar-toggle-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--chip-color);
  border: 2px solid var(--chip-color);
  box-shadow: 0 0 0 1px var(--surface) inset;
}

.radar-toggle.is-on .radar-toggle-dot {
  background: #fff;
  border-color: #fff;
  box-shadow: none;
}

.chart-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 0.5rem 0.5rem;
  box-shadow: var(--shadow-lg);
  max-width: min(760px, 100%);
  margin: 0 auto;
}

#radar-chart {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  max-height: 560px;
}

.bibtex-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max);
  margin: 0 auto 1rem;
}

.bibtex-header h2 {
  margin: 0;
  text-align: left;
}

.section-citation .bibtex-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
  max-width: var(--max);
  margin: 0 auto;
}

.bibtex {
  margin: 0;
  padding: 0;
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.25rem 2.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  text-align: center;
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}