/* Global Navigation (Apple-style with projects) */

    /* Local Navigation (Project-specific) */

    /* Project switcher dropdown */

    /* Dropdown menu */

    /* Mobile Menu Toggle */

    /* Responsive nav */

    /* Hero Section */

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: var(--apple-blue);
      border: 1px solid var(--apple-blue);
      padding: 16px 32px;
      border-radius: 980px;
      font-size: 17px;
      font-weight: 400;
      text-decoration: none;
      transition: all 0.3s ease;
    }

    .hero-title span {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      padding-right: 0.05em;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .stat-value {
      font-size: 56px;
      font-weight: 600;
      letter-spacing: -0.03em;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-cta {
      display: flex;
      flex-direction: column;
      gap: 16px;
      align-items: center;
      justify-content: center;
      animation: fadeInUp 0.8s ease-out 0.4s backwards;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      justify-content: center;
    }

    /* Section Styles */

    /* Apple-style text highlighting */
    .text-highlight {
      color: var(--apple-black);
    }

    .text-highlight-gradient {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .section-dark .text-highlight,
.section-dark .text-highlight-white {
      color: #fff;
    }

    /* Muted text for contrast */
    .text-muted {
      color: var(--apple-gray);
    }

    .section-dark .text-muted {
      color: rgba(255, 255, 255, 0.5);
    }

    /* The Problem Section */

    .problem-box {
      background: #fff;
      border-radius: 20px;
      padding: 32px;
      text-align: center;
      box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease;
      min-width: 200px;
    }

    .problem-box:hover {
      transform: translateY(-4px);
    }

    .arrow-icon {
      font-size: 24px;
      color: var(--apple-gray);
    }

    /* Key Insight Section */

    @media (max-width: 768px) {
      .insight-grid {
        grid-template-columns: 1fr;
      }
    }

    .insight-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 20px;
      padding: 32px;
      transition: all 0.3s ease;
    }

    .insight-percentage {
      font-size: 64px;
      font-weight: 700;
      letter-spacing: -0.03em;
      margin-bottom: 8px;
    }

    .insight-label {
      font-size: 17px;
      font-weight: 500;
      margin-bottom: 12px;
    }

    /* Interactive Workflow Section */
    .workflow-container {
      margin: 60px 0;
      padding: 40px;
      background: #fff;
      border-radius: 28px;
      box-shadow: 0 4px 40px rgba(0, 0, 0, 0.06);
    }

    .workflow-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 32px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .workflow-title {
      font-size: 24px;
      font-weight: 600;
    }

    .workflow-controls {
      display: flex;
      gap: 12px;
    }

    .workflow-btn {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: none;
      background: var(--apple-light-gray);
      color: var(--apple-black);
      cursor: pointer;
      transition: all 0.2s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
    }

    .workflow-btn:hover {
      background: var(--apple-blue);
      color: #fff;
    }

    .workflow-btn:disabled {
      opacity: 0.4;
      cursor: not-allowed;
    }

    .workflow-stages {
      display: flex;
      gap: 8px;
      margin-bottom: 40px;
      overflow-x: auto;
      padding-bottom: 8px;
    }

    .workflow-stage {
      flex: 1;
      min-width: 120px;
      padding: 16px;
      background: var(--apple-light-gray);
      border-radius: 12px;
      text-align: center;
      transition: all 0.3s ease;
      cursor: pointer;
    }

    .workflow-stage.active {
      background: var(--apple-blue);
      color: #fff;
    }

    .workflow-stage-number {
      font-size: 12px;
      font-weight: 600;
      opacity: 0.6;
      margin-bottom: 4px;
    }

    .workflow-stage-name {
      font-size: 13px;
      font-weight: 500;
    }

    .workflow-visualization {
      min-height: 300px;
      border-radius: 16px;
      background: var(--apple-light-gray);
      padding: 32px;
      position: relative;
      overflow: hidden;
    }

    .workflow-step-content {
      display: none;
      animation: fadeIn 0.5s ease;
    }

    .workflow-step-content.active {
      display: block;
    }

    .token-stream {
      display: flex;
      flex-wrap: wrap;
      gap: 4px;
      font-family: 'SF Mono', Monaco, 'Courier New', monospace;
      font-size: 14px;
      line-height: 2;
    }

    .token {
      padding: 4px 8px;
      border-radius: 6px;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      cursor: default;
      position: relative;
      display: inline-block;
    }

    .token-slm {
      background: #e8f5e9;
      color: #2e7d32;
    }

    .token-llm {
      background: #fce4ec;
      color: #c62828;
      cursor: pointer;
    }

    .token-neutral {
      background: #e3f2fd;
      color: #1565c0;
      cursor: pointer;
    }

    .token-llm:hover,
.token-neutral:hover {
      transform: scale(1.1) translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
      z-index: 10;
    }

    .token-highlight {
      transform: scale(1.1);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }

    /* Token Tooltips */
    .token-tooltip {
      position: absolute;
      top: calc(100% + 12px);
      left: 50%;
      transform: translateX(-50%) scale(0.95);
      width: 340px;
      padding: 16px;
      background: #fff;
      border-radius: 12px;
      box-shadow: 0 8px 40px rgba(0, 0, 0, 0.25);
      border: 1px solid rgba(0, 0, 0, 0.08);
      opacity: 0;
      visibility: hidden;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      z-index: 1000;
      font-size: 13px;
      line-height: 1.5;
      color: var(--apple-black);
      text-align: left;
      pointer-events: none;
    }

    .token-tooltip::before {
      content: '';
      position: absolute;
      top: -8px;
      left: 50%;
      transform: translateX(-50%) rotate(45deg);
      width: 14px;
      height: 14px;
      background: #fff;
      border-top: 1px solid rgba(0, 0, 0, 0.08);
      border-left: 1px solid rgba(0, 0, 0, 0.08);
    }

    .token:hover .token-tooltip {
      opacity: 1;
      visibility: visible;
      transform: translateX(-50%) scale(1);
    }

    /* Ensure workflow container doesn't clip tooltips */
    .workflow-visualization {
      overflow: visible !important;
    }

    .workflow-step-content {
      overflow: visible;
    }

    .token-stream {
      overflow: visible;
    }

    .tooltip-section {
      margin-bottom: 12px;
    }

    .tooltip-section:last-child {
      margin-bottom: 0;
    }

    .tooltip-label {
      font-size: 11px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--apple-gray);
      margin-bottom: 4px;
    }

    .tooltip-content {
      font-size: 13px;
      line-height: 1.5;
    }

    .tooltip-highlight-slm {
      color: #1565c0;
      font-weight: 600;
    }

    .tooltip-highlight-llm {
      color: #c62828;
      font-weight: 600;
    }

    .tooltip-tag {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 11px;
      font-weight: 600;
      margin-top: 8px;
    }

    .tooltip-tag.neutral {
      background: #e3f2fd;
      color: #1565c0;
    }

    .tooltip-tag.divergent {
      background: #fce4ec;
      color: #c62828;
    }

    .workflow-legend {
      display: flex;
      gap: 24px;
      margin-top: 24px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .legend-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
    }

    .legend-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
    }

    .legend-dot.slm { background: #2e7d32; }
    .legend-dot.llm { background: #c62828; }
    .legend-dot.neutral { background: #1565c0; }

    /* Expandable Sections with Smooth Animations */

    /* Dark section expandable hover fix */

    /* Results Section */
    .results-comparison {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 48px;
    }

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

    @media (max-width: 600px) {
      .results-comparison {
        grid-template-columns: 1fr;
      }
    }

    .result-card {
      background: #fff;
      border-radius: 20px;
      padding: 32px;
      box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
      transition: transform 0.3s ease;
    }

    .result-card:hover {
      transform: translateY(-4px);
    }

    .result-card.highlight {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      color: #fff;
    }

    .result-card.highlight .result-label,
.result-card.highlight .result-metric {
      color: rgba(255, 255, 255, 0.8);
    }

    .result-method {
      font-size: 14px;
      font-weight: 500;
      opacity: 0.6;
      margin-bottom: 8px;
    }

    .result-value {
      font-size: 48px;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 4px;
    }

    .result-label {
      font-size: 14px;
      color: var(--apple-gray);
      margin-bottom: 16px;
    }

    .result-metrics {
      display: flex;
      gap: 24px;
      padding-top: 16px;
      border-top: 1px solid rgba(0, 0, 0, 0.06);
    }

    .result-card.highlight .result-metrics {
      border-top-color: rgba(255, 255, 255, 0.2);
    }

    .result-metric {
      font-size: 13px;
      color: var(--apple-gray);
    }

    .result-metric strong {
      color: var(--apple-black);
      font-weight: 600;
    }

    .result-card.highlight .result-metric strong {
      color: #fff;
    }

    /* Chart Section */
    .chart-container {
      margin: 60px 0;
      text-align: center;
    }

    .chart-container img {
      max-width: 100%;
      border-radius: 16px;
      box-shadow: 0 4px 40px rgba(0, 0, 0, 0.08);
    }

    /* Authors Section */

    .affiliations {
      margin-top: 24px;
      font-size: 14px;
      color: var(--apple-gray);
    }

    /* Footer */

    /* BibTeX */

    /* Animations */
    @keyframes fadeIn {
      from { opacity: 0; }
      to { opacity: 1; }
    }

    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @keyframes pulse {
      0%,
100% { transform: scale(1); }
      50% { transform: scale(1.05); }
    }

    /* Scroll reveal animations */

    /* Responsive */
    @media (max-width: 768px) {
      /* Mobile navigation */

      /* Global nav font size increase for mobile */

      .hero-stats {
        gap: 30px;
      }

      .stat-value {
        font-size: 40px;
      }

      .problem-diagram {
        flex-direction: column;
      }

      .arrow-icon {
        transform: rotate(90deg);
      }
    }

    /* Method Overview */
    .method-visual {
      margin: 48px 0;
      text-align: center;
    }

    .method-visual img {
      max-width: 100%;
      border-radius: 20px;
      box-shadow: 0 8px 60px rgba(0, 0, 0, 0.1);
    }

    /* Observation cards grid */
    .observations-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 24px;
      margin-top: 48px;
    }

    .observation-card {
      background: #fff;
      border-radius: 20px;
      padding: 32px;
      box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
      transition: transform 0.3s ease;
    }

    .observation-card:hover {
      transform: translateY(-4px);
    }

    .observation-card img {
      width: 100%;
      border-radius: 12px;
      margin-bottom: 20px;
    }

    .observation-card h4 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .observation-card p {
      font-size: 15px;
      color: var(--apple-gray);
      margin-bottom: 16px;
    }

    .observation-insight {
      background: var(--apple-light-gray);
      padding: 16px;
      border-radius: 12px;
      font-size: 14px;
    }

    .observation-insight strong {
      color: var(--apple-blue);
    }

    /* Interactive Demo Styling */
    .demo-section {
      text-align: center;
    }

    .demo-video {
      margin: 48px 0;
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 8px 60px rgba(0, 0, 0, 0.15);
    }

    .demo-video video {
      width: 100%;
      display: block;
    }

    /* Scroll to top */


/* Collapsed global navigation */

/* Keep project tiles consistent with the team hub. */