:root {
      /* Modern Professional Color System */
      --navy: #0f172a;
      --navy-light: #334155;
      --navy-accent: #475569;
      --accent: #2563eb;
      --accent-light: #3b82f6;
      --accent-hover: #1d4ed8;
      --gold: #f59e0b;

      /* Neutral Backgrounds */
      --bg: #ffffff;
      --bg-secondary: #f8fafc;
      --bg-tertiary: #f1f5f9;
      --bg-elevated: #fafafa;

      /* Text Colors */
      --text: #0f172a;
      --text-secondary: #334155;
      --text-muted: #64748b;
      --text-light: #6b7280; /* ACCESSIBILITY: Changed from #94a3b8 for WCAG AA contrast */

      /* Borders */
      --border: #e2e8f0;
      --border-light: #f1f5f9;
      --border-focus: #cbd5e1;

      /* Modern Shadow System */
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
      --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

      /* Elevation for interactive elements */
      --elevation-1: 0 2px 4px rgba(15, 23, 42, 0.06);
      --elevation-2: 0 4px 8px rgba(15, 23, 42, 0.08);
      --elevation-3: 0 8px 16px rgba(15, 23, 42, 0.10);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html {
      scroll-behavior: smooth;
      scroll-padding-top: 80px;
      /* Performance: Enable GPU acceleration for smooth scrolling */
      -webkit-overflow-scrolling: touch;
    }

    body {
      font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      line-height: 1.7;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      /* Performance: Text rendering optimization */
      text-rendering: optimizeSpeed;
    }

    h1, h2, h3 {
      font-family: 'Playfair Display', Georgia, serif;
      letter-spacing: -0.02em;
    }

    a {
      color: var(--accent);
      text-decoration: none;
      transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
    }
    a:hover {
      color: var(--accent-hover);
    }

    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

    /* Navigation */
    header.nav {
      position: sticky;
      top: 0;
      background: rgba(255,255,255,.98);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      z-index: 100;
      box-shadow: var(--shadow-sm);
      /* Performance: Use GPU for sticky positioning and blur */
      will-change: transform;
      transform: translateZ(0);
      contain: layout style;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 0;
      gap: 16px;
      min-width: 0;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: var(--navy);
      font-size: 20px;
      flex-shrink: 0;
    }
    .brand .logo {
      width: 48px;
      height: 48px;
      background: var(--navy);
      border-radius: 12px;
      display: grid;
      place-items: center;
      color: white;
      font-weight: 900;
      font-size: 20px;
      box-shadow: var(--elevation-2);
      border: 1px solid rgba(255, 255, 255, 0.1);
      text-decoration: none;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      cursor: pointer;
    }
    .brand .logo:hover {
      transform: translateY(-2px);
      box-shadow: var(--elevation-3);
      background: linear-gradient(135deg, var(--navy) 0%, #1e3a8a 100%);
    }
    .brand .logo:focus {
      outline: none;
    }
    .brand .logo:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }
    nav {
      display: flex;
      gap: 4px;
      flex-wrap: nowrap;
      position: relative;
      overflow-x: auto;
      overflow-y: visible;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: none;
      -ms-overflow-style: none;
      padding: 2px 0;
      min-width: 0;
      flex: 1;
      max-width: 100%;
    }
    nav::-webkit-scrollbar {
      display: none;
    }
    nav a {
      padding: 8px 16px;
      font-weight: 500;
      color: var(--text);
      background: transparent;
      border-radius: 8px;
      font-size: 14px;
      letter-spacing: -0.01em;
      transition: all 0.2s ease;
      position: relative;
      white-space: nowrap;
      border: 1px solid transparent;
    }
    nav a:hover {
      background: var(--bg-tertiary);
      border-color: var(--border);
    }
    nav a:focus {
      outline: none;
    }
    nav a:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }
    nav a.active {
      color: var(--accent);
      background: rgba(37, 99, 235, 0.08);
      font-weight: 600;
      border-color: rgba(37, 99, 235, 0.2);
    }
    button:focus {
      outline: none;
    }
    button:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }

    /* Mobile menu toggle */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--navy);
    }

    /* Hero */
    .hero {
      background: var(--bg-secondary);
      padding: 80px 0 60px;
      border-bottom: 1px solid var(--border);
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute;
      top: 0;
      right: 0;
      width: 60%;
      height: 100%;
      background: radial-gradient(ellipse at top right, rgba(37, 99, 235, 0.03) 0%, transparent 50%);
      pointer-events: none;
    }
    .hero-content {
      display: grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 60px;
      align-items: center;
    }
    .hero-text .eyebrow {
      display: inline-block;
      background: var(--navy);
      color: white;
      padding: 8px 16px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .5px;
      text-transform: uppercase;
      margin-bottom: 20px;
      box-shadow: var(--elevation-1);
    }
    h1 {
      font-size: clamp(36px, 5vw, 56px);
      line-height: 1.15;
      color: var(--navy);
      margin-bottom: 20px;
      font-weight: 800;
    }
    .tagline {
      font-size: 19px;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .tagline strong { color: var(--text); }
    .chips {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 24px 0;
    }
    .chip {
      background: white;
      color: var(--navy);
      border: 1.5px solid var(--accent);
      padding: 8px 14px;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
      box-shadow: var(--shadow-sm);
    }
    .cta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 32px;
      align-items: center;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 28px;
      font-weight: 600;
      border-radius: 10px;
      font-size: 16px;
      transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: var(--elevation-1);
      min-width: 160px;
      cursor: pointer;
    }
    .btn.primary {
      background: var(--navy);
      color: white;
      border: 1px solid var(--navy);
    }
    .btn.primary:hover {
      background: var(--navy-accent);
      border-color: var(--navy-accent);
      box-shadow: var(--elevation-3);
      transform: translateY(-2px);
    }
    .btn.secondary {
      background: white;
      color: var(--navy);
      border: 1px solid var(--border-focus);
    }
    .btn.secondary:hover {
      background: var(--bg-tertiary);
      border-color: var(--navy);
      box-shadow: var(--elevation-2);
      transform: translateY(-2px);
    }

    .portrait {
      border-radius: 20px;
      overflow: hidden;
      box-shadow: var(--shadow-xl);
      aspect-ratio: 4 / 5;
      background: var(--bg-tertiary);
      display: grid;
      place-items: center;
      border: 1px solid var(--border);
    }
    .portrait img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .portrait svg {
      color: var(--accent-light);
    }

    /* Stats */
    .stats {
      padding: 60px 0;
      background: var(--bg-secondary);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 32px;
    }
    .stat-card {
      text-align: center;
      padding: 32px 24px;
      background: white;
      border-radius: 16px;
      box-shadow: var(--elevation-1);
      transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid var(--border);
    }
    .stat-card:hover {
      box-shadow: var(--elevation-3);
      transform: translateY(-4px);
      border-color: var(--border-focus);
    }
    .stat-number {
      font-size: 48px;
      font-weight: 900;
      color: var(--navy);
      font-family: 'Playfair Display', serif;
    }
    .stat-label {
      font-size: 15px;
      color: var(--text-muted);
      font-weight: 600;
      margin-top: 8px;
      text-transform: uppercase;
      letter-spacing: .5px;
    }

    /* Sections */
    section {
      padding: 80px 0;
      /* PERFORMANCE: Content-visibility for faster initial render */
      content-visibility: auto;
      contain-intrinsic-size: auto 500px;
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 60px;
    }
    .section-title {
      font-size: clamp(32px, 4vw, 44px);
      color: var(--navy);
      margin-bottom: 16px;
      font-weight: 800;
      letter-spacing: -0.02em;
    }
    .section-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Cards */
    .grid { 
      display: grid; 
      gap: 28px; 
      align-items: stretch;
    }
    .grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
    .grid.cols-3 { grid-template-columns: repeat(3, 1fr); }

    .card {
      background: white;
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 32px;
      box-shadow: var(--elevation-1);
      transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
      display: flex;
      flex-direction: column;
      /* PERFORMANCE: CSS containment for better rendering */
      contain: layout style paint;
    }
    .card.video-card {
      display: grid;
      grid-template-rows: auto auto auto 1fr auto;
      grid-template-columns: 1fr;
    }
    .card.video-card h3 {
      display: flex;
      align-items: flex-start;
    }
    .card.video-card > p:first-of-type {
      display: flex;
      align-items: flex-start;
    }
    .card.industry-card {
      display: flex;
      flex-direction: column;
    }
    /* Card alignment is handled dynamically by JavaScript in script.js */
    /* See alignGridCards() function for responsive alignment logic */
    .card:hover {
      box-shadow: var(--elevation-3);
      border-color: var(--accent-light);
      transform: translateY(-4px);
    }
    .card h3 {
      font-size: 24px;
      color: var(--navy);
      margin: 0 0 8px 0;
      font-weight: 800;
      line-height: 1.3;
    }
    .card h4 {
      font-size: 18px;
      color: var(--accent);
      margin: 0 0 8px;
      font-weight: 700;
    }
    .card > p:first-of-type {
      color: var(--text-muted);
      margin: 0 0 8px 0;
      line-height: 1.7;
    }
    /* Colored subtitle paragraphs */
    .card > p[style*="color: var(--accent)"],
    .card > p[style*="color: var(--accent)"] {
      margin: 0 0 8px 0;
      line-height: 1.5;
    }
    .card p {
      color: var(--text-muted);
      margin: 0 0 8px 0;
      line-height: 1.7;
    }
    .card p:last-child {
      margin-bottom: 0;
    }
    .card ul {
      margin: 4px 0 0 24px;
      color: var(--text-muted);
    }
    .card li {
      margin: 8px 0;
      line-height: 1.6;
    }

    /* Badges */
    .badges {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin: 16px 0;
    }
    .badge {
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: .5px;
      text-transform: uppercase;
    }
    .badge.cae {
      background: #fee2e2;
      color: #991b1b;
      border: 1px solid #fca5a5;
    }
    .badge.capstone {
      background: #ede9fe;
      color: #5b21b6;
      border: 1px solid #c4b5fd;
    }
    .badge.core {
      background: #cffafe;
      color: #155e75;
      border: 1px solid #67e8f9;
    }
    .badge.grad {
      background: #dbeafe;
      color: #1e40af;
      border: 1px solid #93c5fd;
    }
    .badge.lab {
      background: #d1fae5;
      color: #065f46;
      border: 1px solid #6ee7b7;
    }
    .badge.breadth {
      background: #fef3c7;
      color: #92400e;
      border: 1px solid #fcd34d;
    }
    .badge.depth {
      background: #fce7f3;
      color: #831843;
      border: 1px solid #f9a8d4;
    }
    .badge.special {
      background: #f3e8ff;
      color: #6b21a8;
      border: 1px solid #d8b4fe;
    }
    .badge.core-masters {
      background: #dbeafe;
      color: #1e40af;
      border: 1px solid #93c5fd;
    }
    .badge.breadth-elective {
      background: #fef3c7;
      color: #92400e;
      border: 1px solid #fcd34d;
    }
    .badge.depth-elective {
      background: #fce7f3;
      color: #831843;
      border: 1px solid #f9a8d4;
    }
    .badge.special-topics {
      background: #f3e8ff;
      color: #6b21a8;
      border: 1px solid #d8b4fe;
    }
    .badge.cae-operations,
    .badge.cae-defense {
      background: #fee2e2;
      color: #991b1b;
      border: 1px solid #fca5a5;
    }
    .badge.graduate {
      background: #e0e7ff;
      color: #3730a3;
      border: 1px solid #a5b4fc;
    }
    .badge.hands-on-labs {
      background: #d1fae5;
      color: #065f46;
      border: 1px solid #6ee7b7;
    }

    /* Course Table */
    .course-table {
      width: 100%;
      border-collapse: collapse;
      margin-bottom: 32px;
      background: white;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--elevation-1);
      border: 1px solid var(--border);
    }
    .course-table th {
      background: var(--navy);
      color: white;
      padding: 16px;
      text-align: left;
      font-weight: 700;
      font-size: 14px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }
    .course-table td {
      padding: 16px;
      border-bottom: 1px solid var(--border);
      font-size: 15px;
    }
    .course-table tr:last-child td {
      border-bottom: none;
    }
    .course-table tr:hover {
      background: var(--bg-secondary);
    }
    .course-table .course-code-cell {
      font-family: 'Inter', monospace;
      font-weight: 700;
      color: var(--accent);
      white-space: nowrap;
    }
    .course-table .enrollment-cell {
      color: var(--text-muted);
      font-weight: 600;
      white-space: nowrap;
    }

    /* Course Cards */
    .course-card {
      background: white;
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 28px;
      margin-bottom: 20px;
      transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: var(--elevation-1);
    }
    .course-card:hover {
      box-shadow: var(--elevation-2);
      border-color: var(--accent-light);
      transform: translateY(-2px);
    }
    .course-header {
      display: flex;
      justify-content: space-between;
      align-items: start;
      margin-bottom: 16px;
      gap: 16px;
    }
    .course-code {
      font-family: 'Inter', monospace;
      font-size: 13px;
      color: var(--accent);
      font-weight: 700;
      letter-spacing: .5px;
    }
    .enrollment {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* View Tabs */
    .view-tabs {
      display: flex;
      gap: 8px;
      justify-content: center;
      margin-bottom: 32px;
      border-bottom: 2px solid var(--border);
      padding-bottom: 0;
    }
    .view-tab {
      padding: 16px 32px;
      background: none;
      border: none;
      font-size: 18px;
      font-weight: 600;
      color: var(--text-muted);
      cursor: pointer;
      transition: all .3s ease;
      border-bottom: 3px solid transparent;
      margin-bottom: -2px;
    }
    .view-tab:hover {
      color: var(--navy);
    }
    .view-tab.active {
      color: var(--navy);
      border-bottom-color: var(--navy);
    }
    .view-content {
      display: none;
    }
    .view-content.active {
      display: block;
    }

    /* Year Tabs */
    .year-tabs {
      display: flex;
      gap: 8px;
      margin-bottom: 32px;
      flex-wrap: wrap;
      justify-content: center;
    }
    .year-tab {
      padding: 12px 24px;
      border-radius: 10px;
      background: white;
      border: 2px solid var(--border);
      color: var(--text-muted);
      font-weight: 700;
      cursor: pointer;
      transition: all .2s ease;
      font-size: 15px;
    }
    .year-tab:hover {
      border-color: var(--accent);
      color: var(--navy);
    }
    .year-tab.active {
      background: var(--navy);
      border-color: var(--navy);
      color: white;
      box-shadow: var(--elevation-2);
    }

    /* Publications */
    .publication {
      padding: 28px;
      background: white;
      border-left: 4px solid var(--accent-light);
      border-radius: 12px;
      margin-bottom: 20px;
      box-shadow: var(--elevation-1);
      transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .publication:hover {
      box-shadow: var(--elevation-2);
      border-left-color: var(--accent);
      transform: translateX(4px);
    }
    .pub-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--navy);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .pub-authors {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 8px;
      font-style: italic;
    }
    .pub-venue {
      font-size: 14px;
      color: var(--accent);
      font-weight: 600;
      margin-bottom: 12px;
    }
    .pub-abstract {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 12px 0;
    }
    .pub-links {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: auto;
      padding-top: 16px;
    }
    .pub-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 16px;
      background: var(--bg-tertiary);
      border: 1px solid var(--accent-light);
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--navy);
      transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .pub-link:hover {
      background: var(--navy);
      color: white;
      box-shadow: var(--elevation-2);
    }

    /* Forbes article container */
    .forbes-articles-grid {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 8px;
    }

    /* Forbes article links - elegant card design */
    .forbes-article-link {
      display: flex;
      flex-direction: column;
      gap: 6px;
      padding: 16px 20px;
      background: var(--bg-secondary);
      border-radius: 10px;
      color: var(--text) !important;
      text-decoration: none;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      border-left: 4px solid var(--border);
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    }
    .forbes-article-link:hover {
      background: white;
      border-left-color: var(--accent);
      transform: translateX(6px);
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.12), 0 2px 4px rgba(0, 0, 0, 0.08);
    }
    .forbes-article-link .article-title {
      color: var(--navy);
      font-size: 15px;
      font-weight: 600;
      line-height: 1.5;
      transition: color 0.2s ease;
    }
    .forbes-article-link:hover .article-title {
      color: var(--accent);
    }
    .forbes-article-link .article-date {
      color: var(--text-muted);
      font-size: 13px;
      font-weight: 500;
      letter-spacing: 0.02em;
      transition: color 0.2s ease;
    }
    .forbes-article-link:hover .article-date {
      color: var(--accent-light);
    }

    /* Forbes header styling */
    .forbes-header {
      display: flex;
      flex-direction: column;
      gap: 12px;
      padding: 24px;
      background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
      border-radius: 12px;
      border: 1px solid var(--border);
      margin-bottom: 24px;
    }
    .forbes-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: var(--accent);
      color: white;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.02em;
      width: fit-content;
      box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
    }

    /* Responsive adjustments for Forbes section */
    @media (max-width: 768px) {
      .forbes-article-link {
        padding: 14px 16px;
      }
      .forbes-article-link .article-title {
        font-size: 14px;
      }
    }

    /* Filter Tabs */
    .filter-tabs {
      display: flex;
      gap: 8px;
      margin-bottom: 32px;
      flex-wrap: wrap;
      justify-content: center;
    }
    .filter-tab {
      padding: 10px 20px;
      border-radius: 10px;
      background: white;
      border: 2px solid var(--border);
      color: var(--text-muted);
      font-weight: 600;
      font-size: 14px;
      cursor: pointer;
      transition: all .2s ease;
    }
    .filter-tab:hover {
      border-color: var(--accent);
      color: var(--navy);
    }
    .filter-tab.active {
      background: var(--navy);
      border-color: var(--navy);
      color: white;
    }

    /* Video */
    .video-wrapper {
      aspect-ratio: 16 / 9;
      width: 100%;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--elevation-2);
      margin: 8px 0;
      border: 1px solid var(--border);
      flex-shrink: 0;
    }
    .video-wrapper iframe {
      width: 100%;
      height: 100%;
      border: none;
    }
    .card.video-card > p:last-of-type {
      flex-grow: 1;
    }

    /* Partnerships */
    .logo-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 40px;
      align-items: center;
      justify-content: center;
      padding: 40px;
      background: white;
      border-radius: 16px;
      border: 1px solid var(--border);
    }
    .partner-logo {
      height: 40px;
      opacity: .7;
      transition: all .3s ease;
      filter: grayscale(100%);
    }
    .partner-logo:hover {
      opacity: 1;
      filter: grayscale(0%);
      transform: scale(1.1);
    }

    /* Footer */
    footer {
      background: var(--bg-secondary);
      border-top: 1px solid var(--border);
      padding: 60px 0 40px;
      margin-top: 80px;
    }
    .footer-content {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-section h4 {
      color: var(--navy);
      margin-bottom: 16px;
      font-size: 16px;
      font-weight: 700;
    }
    .footer-section ul {
      list-style: none;
    }
    .footer-section li {
      margin: 10px 0;
    }
    .footer-section a {
      color: var(--text-muted);
      font-size: 15px;
    }
    .footer-section a:hover {
      color: var(--navy);
    }
    .footer-bottom {
      padding-top: 32px;
      border-top: 1px solid var(--border);
      text-align: center;
      color: var(--text-muted);
      font-size: 14px;
    }

    /* Animations */
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    .fade-in {
      animation: fadeInUp 0.6s ease-out;
    }

    .year-content, .filter-content {
      display: none;
    }
    .year-content.active, .filter-content.active {
      display: block;
      animation: fadeInUp 0.4s ease-out;
    }

    /* Responsive Breakpoints */

    /* Mobile: 640px and below */
    @media (max-width: 640px) {
      .container { padding: 0 16px; }
      .hero { padding: 40px 0 30px; }
      .hero-content { gap: 24px; }
      h1 { font-size: 32px; }
      h2 { font-size: 24px; }
      section { padding: 40px 0; }
      .stat-card h3 { font-size: 28px; }
      .chips { gap: 6px; }
      .chip { padding: 6px 10px; font-size: 11px; }
      .card { padding: 20px; }
      .pub-links { flex-direction: column; gap: 8px; }

      /* Compact header for mobile */
      .brand > div {
        display: none;
      }
      .layout-controls button {
        padding: 4px 8px;
        font-size: 10px;
        min-width: 42px;
      }
      .layout-controls {
        margin-left: 8px;
        padding-left: 8px;
        gap: 4px;
      }
    }

    /* Tablet: 641px to 768px */
    @media (min-width: 641px) and (max-width: 768px) {
      .container { padding: 0 20px; }
      .hero { padding: 60px 0 40px; }
      h1 { font-size: 40px; }
      section { padding: 60px 0; }
      .grid.cols-3 { grid-template-columns: repeat(2, 1fr); }

      /* Compact brand for tablet */
      .brand {
        gap: 8px;
        font-size: 18px;
      }
      .brand .logo {
        width: 40px;
        height: 40px;
      }
    }

    /* Medium screens: 641px to 980px */
    @media (min-width: 641px) and (max-width: 980px) {
      .layout-controls button {
        padding: 4px 9px;
        font-size: 10px;
        min-width: 44px;
      }
      .layout-controls {
        margin-left: 10px;
        padding-left: 10px;
        gap: 5px;
      }
      .nav-inner {
        gap: 12px;
      }
    }

    /* Small Laptop: 769px to 1024px */
    @media (min-width: 769px) and (max-width: 1024px) {
      .container { max-width: 960px; }
      .hero-content { gap: 40px; }
      .grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
    }

    /* Tablet and below: 980px and below */
    @media (max-width: 980px) {
      .hero-content { grid-template-columns: 1fr; }
      .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }
      .course-header { flex-direction: column; align-items: start; }

      nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 16px;
        box-shadow: var(--elevation-3);
      }
      nav.active { display: flex; }
      .menu-toggle { display: block; }

      /* ACCESSIBILITY: Ensure 44px min touch target per WCAG AA */
      nav a {
        padding: 13px 16px;
        min-height: 44px;
      }

      /* Horizontal drop indicator for vertical nav */
      .drop-indicator {
        width: 80% !important;
        height: 3px !important;
        left: 10% !important;
        transform: none !important;
        background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%) !important;
      }
    }

    /* Accent sections */
    .accent-bg {
      background: var(--bg-secondary);
      position: relative;
    }
    .accent-bg::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: radial-gradient(ellipse at center, rgba(37, 99, 235, 0.02) 0%, transparent 70%);
      pointer-events: none;
    }

    /* Drag-and-Drop Navigation Reordering */
    nav a {
      cursor: grab;
      user-select: none;
      position: relative;
    }
    nav a:active {
      cursor: grabbing;
    }
    nav a.dragging {
      opacity: 0.4;
      transform: scale(0.95);
      cursor: grabbing;
    }
    nav a.drag-over {
      transform: translateY(-2px) scale(1.02);
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
      background: linear-gradient(135deg, var(--bg-tertiary) 0%, rgba(37, 99, 235, 0.05) 100%);
    }

    /* Drop indicator */
    .drop-indicator {
      position: absolute;
      width: 3px;
      height: 40px;
      background: linear-gradient(180deg, var(--accent) 0%, var(--accent-light) 100%);
      border-radius: 2px;
      box-shadow: 0 0 8px rgba(37, 99, 235, 0.4), 0 0 4px rgba(37, 99, 235, 0.6);
      pointer-events: none;
      z-index: 1000;
      opacity: 0;
      transition: opacity 0.15s ease;
      top: 50%;
      transform: translateY(-50%);
    }
    .drop-indicator.show {
      opacity: 1;
    }

    /* Section reorder animations */
    main > section {
      transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.5s ease;
    }
    main > section.reordering {
      opacity: 0.7;
    }
    /* Disable transitions on initial load */
    main > section.no-transition {
      transition: none !important;
    }

    /* Floating Layout Controls Below Nav Bar */
    .layout-controls-floating {
      position: fixed;
      top: 65px; /* Below the nav bar */
      right: 20px;
      z-index: 998; /* Below nav (999) but above content */
      display: flex;
      gap: 8px;
      background: var(--bg-secondary);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 8px 12px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.05);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      /* Hidden by default, shown on nav hover */
      opacity: 0;
      pointer-events: none;
      transform: translateY(-8px);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    /* Show when hovering over navigation */
    header.nav:hover ~ .layout-controls-floating,
    .layout-controls-floating:hover {
      opacity: 1;
      pointer-events: auto;
      transform: translateY(0);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15), 0 3px 6px rgba(0, 0, 0, 0.08);
    }
    .layout-controls-floating button {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 8px 14px;
      border-radius: 7px;
      font-size: 13px;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
      font-family: Inter, sans-serif;
      white-space: nowrap;
      border: 1px solid transparent;
    }
    .layout-controls-floating button svg {
      flex-shrink: 0;
    }
    .layout-controls-floating .save-btn {
      background: var(--accent);
      color: white;
      border-color: var(--accent);
    }
    .layout-controls-floating .save-btn:hover {
      background: var(--accent-hover);
      box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
      transform: translateY(-1px);
    }
    .layout-controls-floating .save-btn.saved {
      background: #10b981;
      border-color: #10b981;
    }
    .layout-controls-floating .reset-btn {
      background: var(--bg-tertiary);
      color: var(--text);
      border-color: var(--border);
    }
    .layout-controls-floating .reset-btn:hover {
      background: var(--bg-primary);
      border-color: var(--text-muted);
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      transform: translateY(-1px);
    }
    .layout-controls-floating .reset-btn.resetting {
      opacity: 0.6;
    }

    /* Mobile responsive adjustments */
    @media (max-width: 768px) {
      .layout-controls-floating {
        top: 60px;
        right: 10px;
        padding: 6px 10px;
        gap: 6px;
      }
      .layout-controls-floating button {
        /* ACCESSIBILITY: Ensure 44px min touch target per WCAG AA */
        padding: 12px 14px;
        font-size: 12px;
        gap: 4px;
        min-height: 44px;
      }
      .layout-controls-floating button svg {
        width: 12px;
        height: 12px;
      }
    }

    /* Small mobile - stack buttons or make more compact */
    @media (max-width: 480px) {
      .layout-controls-floating {
        flex-direction: column;
        gap: 4px;
        padding: 6px;
      }
      .layout-controls-floating button {
        width: 100%;
        justify-content: center;
      }
    }

    /* ACCESSIBILITY: Skip to content link */
    .skip-link {
      position: absolute;
      top: -40px;
      left: 0;
      background: var(--navy);
      color: white;
      padding: 8px 16px;
      text-decoration: none;
      font-weight: 600;
      border-radius: 0 0 4px 0;
      z-index: 1000;
      transition: top 0.2s ease;
    }
    .skip-link:focus {
      top: 0;
      outline: 3px solid var(--accent);
      outline-offset: 2px;
    }

    /* Loading spinner animation */
    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
    .loading-spinner {
      width: 48px;
      height: 48px;
      border: 4px solid var(--border);
      border-top-color: var(--accent);
      border-radius: 50%;
      animation: spin 1s linear infinite;
      margin: 0 auto;
    }

    /* ACCESSIBILITY: Respect user's motion preferences */
    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
      }
    }

    /* RESPONSIVE: Ultra-small devices */
    @media (max-width: 360px) {
      html { font-size: 14px; }
      .container { padding: 0 16px; }
      .hero h1 { font-size: 28px; }
      section { padding: 60px 0; }
    }