/* ===================================================
   LibMoE Academic Landing Page — Style System
   Inspired by Anthropic's design language
   =================================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- Design Tokens --- */
:root {
  --ivory:        #FAF9F5;
  --off-white:    #F2EFE6;
  --cream:        #EDE9DC;
  --slate-dark:   #141413;
  --slate-mid:    #3D3D3A;
  --slate-light:  #6B6963;
  --slate-muted:  #B0AEA5;
  --accent-gold:  #C8923A;
  --accent-coral: #C75B42;
  --accent-sage:  #4A7C6F;
  --border:       rgba(20, 20, 19, 0.10);
  --border-strong:rgba(20, 20, 19, 0.20);

  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-hover: 0 20px 60px rgba(0,0,0,0.13), 0 6px 20px rgba(0,0,0,0.07);

  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: 0.18s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background: var(--ivory);
  color: var(--slate-mid);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* --- Container --- */
.container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ===================================================
   NAVIGATION
   =================================================== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(250, 249, 245, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
#navbar.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.07);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo-text {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--slate-dark);
  letter-spacing: -0.02em;
}
.nav-venue-badge {
  display: inline-block;
  padding: 3px 10px;
  background: var(--slate-dark);
  color: var(--ivory);
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}
.nav-links a {
  font-size: 0.875rem;
  color: var(--slate-mid);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-links a:hover {
  background: var(--cream);
  color: var(--slate-dark);
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  background: var(--slate-dark);
  color: var(--ivory) !important;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.nav-cta:hover {
  background: var(--slate-mid) !important;
  transform: translateY(-1px);
}
.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--slate-dark);
}

/* ===================================================
   HERO
   =================================================== */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 100px;
  padding-bottom: 80px;
  background: var(--ivory);
  position: relative;
  overflow: hidden;
}

/* Subtle grid pattern */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(20,20,19,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20,20,19,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 80px;
  align-items: center;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--slate-light);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.tag.venue {
  background: var(--slate-dark);
  color: var(--ivory);
  border-color: var(--slate-dark);
}
.tag.new {
  background: var(--accent-gold);
  color: white;
  border-color: var(--accent-gold);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 700;
  color: var(--slate-dark);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.hero-title .lib { color: var(--accent-gold); }

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.3rem);
  font-weight: 400;
  font-style: italic;
  color: var(--slate-light);
  line-height: 1.5;
  margin-bottom: 12px;
  max-width: 540px;
}
.hero-authors {
  max-width: 620px;
  margin-bottom: 26px;
  font-size: 0.88rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--slate-light);
  letter-spacing: 0.01em;
}

.hero-abstract {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--slate-mid);
  max-width: 560px;
  margin-bottom: 22px;
  border-left: 3px solid var(--cream);
  padding-left: 20px;
}
.hero-reasons {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  max-width: 580px;
  margin-bottom: 34px;
}
.hero-reason {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  background: rgba(242, 239, 230, 0.72);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.hero-reason span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-gold);
  letter-spacing: 0.05em;
  line-height: 1.6;
}
.hero-reason p {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--slate-mid);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: var(--slate-dark);
  color: var(--ivory);
}
.btn-primary:hover {
  background: #2a2a28;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background: transparent;
  color: var(--slate-dark);
  border: 1.5px solid var(--border-strong);
}
.btn-secondary:hover {
  background: var(--cream);
  border-color: var(--slate-mid);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--slate-light);
  border: 1px solid var(--border);
  padding: 10px 20px;
  font-size: 0.85rem;
}
.btn-ghost:hover {
  color: var(--slate-dark);
  border-color: var(--border-strong);
  background: var(--off-white);
}
.btn-icon {
  font-size: 1rem;
}

/* Stats bar */
.hero-stats {
  display: flex;
  gap: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: white;
  max-width: 560px;
}
.stat-item {
  flex: 1;
  padding: 18px 20px;
  text-align: center;
  border-right: 1px solid var(--border);
}
.stat-item:last-child { border-right: none; }
.stat-number {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--slate-dark);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--slate-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Hero visual panel */
.hero-visual {
  position: relative;
}
.moe-diagram-wrapper {
  background: var(--slate-dark);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.moe-diagram-wrapper::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(200,146,58,0.25) 0%, transparent 70%);
  pointer-events: none;
}
.moe-diagram-wrapper::after {
  content: '';
  position: absolute;
  bottom: -40px; left: -40px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(74,124,111,0.2) 0%, transparent 70%);
  pointer-events: none;
}

/* ===================================================
   SECTION COMMON
   =================================================== */
section {
  padding: 100px 0;
}
section:nth-child(odd):not(#hero) {
  background: var(--ivory);
}
section:nth-child(even):not(#hero) {
  background: var(--off-white);
}

.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--slate-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 600;
  color: var(--slate-dark);
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--slate-light);
  line-height: 1.7;
  max-width: 620px;
}
.section-header {
  margin-bottom: 64px;
}

/* Divider */
.divider {
  width: 48px;
  height: 2px;
  background: var(--slate-dark);
  margin: 20px 0 32px;
}

/* ===================================================
   FRAMEWORK / DESIGN
   =================================================== */
#framework {
  background: var(--off-white) !important;
}
.framework-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.framework-card {
  background: var(--ivory);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.framework-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-strong);
}
.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.icon-gold  { background: rgba(200,146,58,0.12); }
.icon-sage  { background: rgba(74,124,111,0.12); }
.icon-coral { background: rgba(199,91,66,0.12); }
.card-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--slate-dark);
  margin-bottom: 10px;
}
.card-desc {
  font-size: 0.9rem;
  color: var(--slate-light);
  line-height: 1.65;
}
.card-features {
  margin-top: 16px;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.card-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--slate-mid);
}
.card-features li::before {
  content: '';
  display: block;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--accent-gold);
  flex-shrink: 0;
}

.algorithms-strip {
  background: var(--ivory);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.algorithms-strip-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--slate-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.algo-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.algo-tag {
  padding: 6px 14px;
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--slate-dark);
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.algo-tag:hover {
  background: var(--slate-dark);
  color: var(--ivory);
  transform: translateY(-2px);
}

/* ===================================================
   RESULTS
   =================================================== */
#results {
  background: var(--ivory) !important;
}
.tab-switcher {
  display: inline-flex;
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 48px;
  gap: 4px;
}
.tab-btn {
  padding: 10px 28px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--slate-light);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.tab-btn.active {
  background: var(--slate-dark);
  color: var(--ivory);
  box-shadow: var(--shadow-sm);
}
.tab-panel {
  display: none;
  animation: fadeIn 0.35s ease;
}
.tab-panel.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.results-summary-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 36px;
}
.result-summary-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.result-summary-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.result-summary-card.accent {
  background: var(--slate-dark);
  border-color: var(--slate-dark);
}
.result-summary-card.accent .rs-number {
  color: var(--accent-gold);
}
.result-summary-card.accent .rs-label {
  color: rgba(250, 249, 245, 0.6);
}
.rs-number {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--slate-dark);
  line-height: 1.1;
  margin-bottom: 4px;
}
.rs-label {
  font-size: 0.74rem;
  color: var(--slate-light);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.results-table-wrap {
  background: white;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: 40px;
}
.table-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  background: var(--cream);
  border-bottom: 1px solid var(--border-strong);
  flex-wrap: wrap;
  gap: 12px;
}
.table-dataset-label {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--slate-dark);
}
.table-note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--slate-light);
  letter-spacing: -0.01em;
}
.table-scroll {
  overflow-x: auto;
  width: 100%;
}
.benchmark-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.82rem;
}
.benchmark-table th, .benchmark-table td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.benchmark-table th {
  background: var(--ivory);
  font-weight: 600;
  color: var(--slate-dark);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 2px solid var(--border-strong);
}
.benchmark-table tbody tr {
  transition: background-color var(--transition-fast);
}
.benchmark-table tbody tr:hover {
  background-color: rgba(20, 20, 19, 0.02);
}
.benchmark-table tbody tr:last-child td {
  border-bottom: none;
}
.method-name {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--slate-dark);
  background: var(--ivory);
  position: sticky;
  left: 0;
  z-index: 2;
  box-shadow: 2px 0 5px rgba(0,0,0,0.02);
}
.benchmark-table tbody tr:hover .method-name {
  background-color: #FAF9F5;
}
.avg-col {
  font-weight: 700;
  color: var(--slate-dark);
  background: rgba(200, 146, 58, 0.05);
}
.rank-col {
  font-weight: 700;
  color: var(--slate-dark);
  background: rgba(74, 124, 111, 0.05);
}
.top-row {
  background-color: rgba(200, 146, 58, 0.06) !important;
}
.top-row:hover {
  background-color: rgba(200, 146, 58, 0.09) !important;
}
.top-row td {
  border-bottom: 1px solid rgba(200, 146, 58, 0.2);
}
.highlight-method {
  color: var(--accent-gold) !important;
}
.best {
  font-weight: 700;
  color: var(--accent-gold);
  background-color: rgba(200, 146, 58, 0.08);
}
.results-footnote {
  padding: 16px 28px;
  font-size: 0.74rem;
  color: var(--slate-light);
  background: var(--ivory);
  border-top: 1px solid var(--border);
  line-height: 1.5;
  margin: 0;
}
.benchmark-insight {
  margin-top: 44px;
  padding: 28px 32px;
  background: white;
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--accent-gold);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}
.benchmark-insight-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.benchmark-insight h3 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  line-height: 1.25;
  color: var(--slate-dark);
  margin-bottom: 10px;
}
.benchmark-insight p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--slate-light);
  max-width: 1040px;
}

/* ===================================================
   ANALYSIS GALLERY
   =================================================== */
#analysis {
  background: var(--off-white) !important;
}
.analysis-intro {
  max-width: 820px;
  margin-bottom: 72px;
}

/* ===================================================
   ANALYSIS CAROUSEL
   =================================================== */
.analysis-carousel-container {
  position: relative;
  left: 50%;
  translate: -50% 0;
  width: min(calc(100vw - 32px), 1320px);
  max-width: none;
  margin: 48px auto 0;
  display: flex;
  align-items: center;
  gap: 24px;
}
.carousel-viewport {
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: white;
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg);
  flex: 1;
  min-width: 0;
  transition: height var(--transition);
  cursor: grab;
  touch-action: pan-y;
  user-select: none;
}
.carousel-viewport.dragging {
  cursor: grabbing;
}
.carousel-viewport.dragging .slide-media,
.carousel-viewport.dragging img {
  cursor: grabbing !important;
}
.carousel-track {
  width: 100%;
  display: flex;
  align-items: flex-start;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.carousel-slide {
  width: 100%;
  min-width: 0;
  flex: 0 0 100%;
  display: flex;
  flex-direction: column;
  background: white;
}
.slide-media {
  width: 100%;
  min-height: 180px;
  background: #FAF9F5;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  cursor: zoom-in;
  padding: 18px 20px;
  min-width: 0;
}
.slide-media img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 500px;
  min-width: 0;
  object-fit: contain;
  transition: transform var(--transition);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.slide-media:hover img {
  transform: scale(1.02);
}
.slide-media-pair {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 18px;
  align-items: stretch;
}
.slide-media-pair-similarity {
  grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.68fr);
}
.figure-panel {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.figure-panel img {
  flex: 0 0 auto;
  max-height: 280px;
  box-shadow: none;
}
.slide-media-pair-similarity .figure-panel:first-child img {
  max-height: 250px;
}
.slide-media-pair-similarity .figure-panel:last-child img {
  max-height: 250px;
}
.figure-panel figcaption {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--slate-light);
  text-align: center;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.slide-content {
  padding: 32px 40px;
}
.slide-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.slide-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--slate-dark);
  margin-bottom: 12px;
  line-height: 1.3;
}
.slide-desc {
  font-size: 0.9rem;
  color: var(--slate-light);
  line-height: 1.65;
}

/* Control Arrows */
.carousel-control {
  background: white;
  border: 1px solid var(--border);
  color: var(--slate-mid);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  z-index: 10;
  flex-shrink: 0;
  padding: 0; /* Reset button styling */
}
.carousel-control:hover {
  background: var(--slate-dark);
  border-color: var(--slate-dark);
  color: var(--ivory);
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

/* Indicator dots */
.carousel-dots {
  position: absolute;
  bottom: -32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}
.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--slate-muted);
  opacity: 0.4;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}
.carousel-dot.active {
  background: var(--accent-gold);
  opacity: 1;
  transform: scale(1.2);
}

/* Large figure display (click to enlarge) */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(20,20,19,0.92);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.lightbox.open {
  opacity: 1;
  pointer-events: all;
}
.lightbox-inner {
  max-width: 900px;
  width: 100%;
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  transform: scale(0.92);
  transition: transform var(--transition);
  box-shadow: 0 40px 120px rgba(0,0,0,0.4);
}
.lightbox.open .lightbox-inner { transform: scale(1); }
.lightbox-img { width: 100%; display: block; }
.lightbox-caption {
  padding: 20px 28px;
  font-size: 0.9rem;
  color: var(--slate-mid);
  line-height: 1.6;
  border-top: 1px solid var(--border);
}
.lightbox-close {
  position: absolute;
  top: 24px; right: 24px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(250,249,245,0.15);
  border: none;
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition-fast);
}
.lightbox-close:hover { background: rgba(250,249,245,0.3); }

.analysis-takeaways {
  margin-top: 76px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.analysis-takeaway:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}
.analysis-takeaway {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 24px;
  background: white;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.takeaway-number {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(200, 146, 58, 0.45);
  font-style: italic;
}
.analysis-takeaway h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.25;
  color: var(--slate-dark);
  margin-bottom: 8px;
}
.analysis-takeaway p {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--slate-light);
}

/* ===================================================
   AUTHORS & CITATION
   =================================================== */
#authors {
  background: var(--off-white) !important;
}
.authors-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 60px;
}
.author-card {
  background: var(--ivory);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  min-width: 0;
  padding: 24px 22px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.author-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.author-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-coral));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.author-name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--slate-dark);
  margin-bottom: 8px;
  white-space: nowrap;
}
.author-affil {
  font-size: 0.82rem;
  color: var(--slate-muted);
  line-height: 1.4;
}
.author-email {
  font-size: 0.78rem;
  color: var(--accent-gold);
  text-decoration: none;
  font-family: var(--font-mono);
  transition: color var(--transition-fast);
}
.author-email:hover { color: var(--accent-coral); text-decoration: underline; }

.citation-block {
  background: var(--ivory);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.citation-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
}
.citation-header-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--slate-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--slate-mid);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.copy-btn:hover {
  background: var(--slate-dark);
  color: var(--ivory);
  border-color: var(--slate-dark);
}
.copy-btn.copied {
  background: var(--accent-sage);
  color: white;
  border-color: var(--accent-sage);
}
.bibtex-code {
  padding: 28px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--slate-mid);
  background: #f8f7f2;
  white-space: pre;
  overflow-x: auto;
}

/* ===================================================
   FOOTER
   =================================================== */
footer {
  background: var(--slate-dark);
  padding: 56px 0 40px;
}
.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(250,249,245,0.1);
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ivory);
  letter-spacing: -0.02em;
}
.footer-logo span { color: var(--accent-gold); }
.footer-tagline {
  font-size: 0.83rem;
  color: rgba(250,249,245,0.4);
  max-width: 240px;
  line-height: 1.5;
}
.footer-links-group h4 {
  font-size: 0.72rem;
  font-weight: 600;
  color: rgba(250,249,245,0.4);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 0.875rem;
  color: rgba(250,249,245,0.65);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-links a:hover { color: var(--ivory); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copyright {
  font-size: 0.8rem;
  color: rgba(250,249,245,0.3);
}
.footer-social {
  display: flex;
  gap: 16px;
}
.footer-social a {
  color: rgba(250,249,245,0.35);
  text-decoration: none;
  font-size: 0.82rem;
  transition: color var(--transition-fast);
}
.footer-social a:hover { color: var(--ivory); }

/* ===================================================
   MoE SVG DIAGRAM STYLES
   =================================================== */
.moe-svg-container {
  width: 100%;
  position: relative;
}
.moe-svg-label {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: rgba(250,249,245,0.7);
}
.moe-svg-title {
  font-family: var(--font-serif);
  font-size: 13px;
  fill: rgba(250,249,245,0.9);
  font-weight: 600;
}
.pulse-dot {
  animation: pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot {
  0%, 100% { opacity: 0.5; r: 4; }
  50%       { opacity: 1;   r: 6; }
}
.flow-path {
  stroke-dasharray: 6 4;
  animation: dashFlow 1.8s linear infinite;
}
@keyframes dashFlow {
  to { stroke-dashoffset: -20; }
}
.expert-glow {
  animation: expertGlow 2.5s ease-in-out infinite alternate;
}
@keyframes expertGlow {
  from { opacity: 0.6; }
  to   { opacity: 1; }
}

/* ===================================================
   RESPONSIVE
   =================================================== */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 60px; }
  .hero-visual { display: none; }
  .framework-grid { grid-template-columns: 1fr 1fr; }
  .authors-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .analysis-takeaways { grid-template-columns: 1fr; }
  .results-summary-row { grid-template-columns: 1fr 1fr; }
  .analysis-carousel-container {
    width: calc(100vw - 24px);
  }
  .carousel-control {
    position: absolute;
    top: 96px;
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(20, 20, 19, 0.2);
  }
  .carousel-control.prev {
    left: -16px;
  }
  .carousel-control.next {
    right: -16px;
  }
  .slide-media-pair {
    grid-template-columns: 1fr;
  }
  .figure-panel img {
    max-height: 220px;
  }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  section { padding: 72px 0; }
  .hero-stats { flex-direction: column; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--border); }
  .stat-item:last-child { border-bottom: none; }
  .framework-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--ivory);
    border-bottom: 1px solid var(--border);
    padding: 16px 20px;
    gap: 4px;
  }
  .authors-grid { grid-template-columns: 1fr 1fr; }
  .tab-switcher { width: 100%; }
  .tab-btn { flex: 1; }
  .footer-inner { flex-direction: column; gap: 32px; }

  /* Carousel responsive overlay arrows */
  .analysis-carousel-container {
    width: calc(100vw - 16px);
    gap: 10px;
  }
  .carousel-control {
    top: 82px;
  }
  .carousel-control.prev {
    left: 10px;
  }
  .carousel-control.next {
    right: 10px;
  }
  .slide-media {
    padding: 14px 16px;
  }
  .figure-panel {
    padding: 10px;
  }
  .figure-panel img {
    max-height: 180px;
  }
  .slide-content {
    padding: 24px 28px;
  }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.8rem; }
  .authors-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .results-summary-row { grid-template-columns: 1fr; }
  .slide-media {
    padding: 12px;
  }
  .carousel-control {
    top: 68px;
  }
  .slide-content {
    padding: 20px 16px;
  }
}