:root {
    --navy: #0D1B2A;
    --navy-mid: #1E3448;
    --navy-light: #162436;
    --teal: #2EC4C4;
    --coral: #F4845F;
    --rose: #F2A7BB;
    --gold: #F5C26B;
    --white: #FFFFFF;
    --off-white: #F0F4F8;
    --text-muted: #8BA3BC;
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }

  html { scroll-behavior: smooth; }

  body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--navy);
    color: var(--white);
    overflow-x: hidden;
  }

  /* ── NAV ── */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2rem 3rem;
    background: rgba(13, 27, 42, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(46, 196, 196, 0.12);
  }

  .nav-logo {
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--teal);
    letter-spacing: 0.05em;
    text-decoration: none;
  }

  .nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
  }

  .nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.88rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: color 0.2s;
  }

  .nav-links a:hover { color: var(--white); }

  .nav-cta {
    background: var(--teal);
    color: var(--navy) !important;
    font-weight: 700 !important;
    padding: 0.5rem 1.25rem;
    border-radius: 4px;
    transition: background 0.2s !important;
  }

  .nav-cta:hover { background: var(--coral) !important; color: var(--white) !important; }

  /* ── HERO ── */
  .hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8rem 3rem 5rem;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background:
      radial-gradient(ellipse 60% 50% at 80% 20%, rgba(46, 196, 196, 0.07) 0%, transparent 70%),
      radial-gradient(ellipse 40% 40% at 10% 80%, rgba(244, 132, 95, 0.06) 0%, transparent 70%);
    pointer-events: none;
  }

  /* Grid lines background */
  .hero::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
      linear-gradient(rgba(46, 196, 196, 0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(46, 196, 196, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
  }

  .hero-inner {
    max-width: 1100px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 1;
  }

  .hero-eyebrow {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--teal);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }

  .hero-eyebrow::before {
    content: '';
    display: inline-block;
    width: 2rem;
    height: 1px;
    background: var(--teal);
  }

  /* Typewriter query */
  .hero-query {
    font-family: 'Courier New', monospace;
    font-size: clamp(0.8rem, 1.4vw, 1.1rem);
    color: rgba(46, 196, 196, 0.5);
    margin-bottom: 1.2rem;
    height: 1.6em;
    overflow: hidden;
  }

  .hero-query .keyword { color: var(--coral); }
  .hero-query .string { color: var(--gold); }
  .hero-query .cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--teal);
    vertical-align: text-bottom;
    animation: blink 1s step-end infinite;
  }

  @keyframes blink { 50% { opacity: 0; } }

  .hero-title {
    font-size: clamp(3.5rem, 8vw, 7rem);
    font-weight: 800;
    line-height: 0.95;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
  }

  .hero-title .rows { color: var(--white); }
  .hero-title .amp {
    color: var(--teal);
    font-weight: 300;
    font-style: italic;
  }
  .hero-title .columns { color: var(--white); }

  .hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-muted);
    max-width: 560px;
    line-height: 1.65;
    margin-bottom: 3rem;
  }

  .hero-subtitle em {
    color: var(--white);
    font-style: normal;
  }

  .hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 3rem;
  }

  .hero-meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
  }

  .hero-meta-label {
    font-family: 'Courier New', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
  }

  .hero-meta-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
  }

  .hero-meta-value.accent { color: var(--teal); }

  .hero-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
  }

  .btn-primary {
    background: var(--teal);
    color: var(--white);
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.9rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: background 0.2s, transform 0.1s;
    display: inline-block;
  }

  .btn-primary:hover { background: #3DD9D9; transform: translateY(-1px); }

  .btn-secondary {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-decoration: none;
    border-bottom: 1px solid rgba(139, 163, 188, 0.3);
    padding-bottom: 1px;
    transition: color 0.2s, border-color 0.2s;
  }

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

  /* ── STATS BAR ── */
  .stats-bar {
    background: var(--navy-light);
    border-top: 1px solid rgba(46, 196, 196, 0.12);
    border-bottom: 1px solid rgba(46, 196, 196, 0.12);
    padding: 2rem 3rem;
  }

  .stats-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
  }

  .stat {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
  }

  .stat-num {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1;
    color: var(--white);
  }

  .stat-num span { color: var(--teal); }

  /* ── BOARD ── */
  .board-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3.5rem;
  }

  .board-card {
    background: var(--navy-mid);
    border-radius: 8px;
    padding: 2rem 1.75rem;
    border: 1px solid rgba(46, 196, 196, 0.08);
    transition: border-color 0.2s, transform 0.2s;
  }

  .board-card:hover {
    border-color: rgba(46, 196, 196, 0.25);
    transform: translateY(-2px);
  }

  .board-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    font-family: 'Courier New', monospace;
    margin-bottom: 1.1rem;
  }

  .board-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.2rem;
  }

  .board-company {
    font-size: 0.75rem;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
  }

  .board-bio {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
  }


  .stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
  }

  /* ── SECTIONS ── */
  .section {
    padding: 6rem 3rem;
  }

  .section-inner {
    max-width: 1100px;
    margin: 0 auto;
  }

  .section-eyebrow {
    font-family: 'Courier New', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: 1rem;
  }

  .section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
  }

  .section-body {
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--text-muted);
    max-width: 640px;
  }

  .section-body em { color: var(--white); font-style: normal; }

  /* ── LIGHT SECTION ── */
  .section-light {
    background: var(--navy-light);
    color: var(--white);
  }

  .section-light .section-eyebrow { color: var(--coral); }
  .section-light .section-title { color: var(--white); }
  .section-light .section-body { color: var(--text-muted); }
  .section-light .section-body em { color: var(--white); }

  /* ── THESIS ── */
  .thesis-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    margin-top: 4rem;
    align-items: start;
  }

  .thesis-statement {
    font-size: 1.4rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--white);
    border-left: 3px solid var(--teal);
    padding-left: 1.5rem;
  }

  .thesis-points {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .thesis-point {
    padding: 1.25rem 1.5rem;
    background: var(--navy-mid);
    border-radius: 6px;
  }

  .thesis-point-label {
    font-size: 0.75rem;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
  }

  .thesis-point-text {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
  }

  /* ── PROGRAM ── */
  .program-grid {
    margin-top: 3.5rem;
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .program-row {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 2rem;
    padding: 1.4rem 0;
    border-bottom: 1px solid rgba(46, 196, 196, 0.1);
    align-items: start;
  }

  .program-row:first-child { border-top: 1px solid rgba(46, 196, 196, 0.1); }

  .program-time {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding-top: 0.2rem;
  }

  .program-content {}

  .program-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.25rem;
  }

  .program-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.55;
  }

  .program-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    margin-bottom: 0.4rem;
  }

  .tag-keynote { background: rgba(244, 132, 95, 0.15); color: var(--coral); }
  .tag-talks { background: rgba(46, 196, 196, 0.12); color: var(--teal); }
  .tag-panel { background: rgba(242, 167, 187, 0.15); color: var(--rose); }
  .tag-social { background: rgba(245, 194, 107, 0.15); color: var(--gold); }

  /* ── SPEAKERS ── */
  .speakers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3.5rem;
  }

  .speaker-card {
    background: var(--navy-mid);
    border-radius: 8px;
    padding: 1.75rem;
    border: 1px solid rgba(46, 196, 196, 0.08);
    transition: border-color 0.2s, transform 0.2s;
  }

  .speaker-card:hover {
    border-color: rgba(46, 196, 196, 0.25);
    transform: translateY(-2px);
  }

  .speaker-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 800;
    font-family: 'Courier New', monospace;
    margin-bottom: 1rem;
  }

  .speaker-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.2rem;
  }

  .speaker-title {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.45;
    margin-bottom: 0.5rem;
  }

  .speaker-company {
    font-size: 0.75rem;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .speaker-tbd {
    opacity: 0.45;
    border-style: dashed;
  }

  .speaker-tbd .speaker-name { color: var(--text-muted); }

  /* ── VENUE ── */
  .venue-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    margin-top: 3.5rem;
    align-items: start;
  }

  .venue-details {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  .venue-detail-row {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid rgba(46, 196, 196, 0.1);
  }

  .venue-detail-row:last-child { border-bottom: none; }

  .venue-detail-label {
    font-family: 'Courier New', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
  }

  .venue-detail-value {
    font-size: 1rem;
    color: var(--white);
    font-weight: 500;
  }

  .venue-photo-placeholder {
    background: var(--navy-mid);
    border-radius: 8px;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed rgba(46, 196, 196, 0.2);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-style: italic;
    text-align: center;
    padding: 2rem;
  }

  /* ── APPLY CTA ── */
  .apply-section {
    background: var(--navy-light);
    border-top: 1px solid rgba(46, 196, 196, 0.12);
    padding: 6rem 3rem;
    text-align: center;
  }

  .apply-inner {
    max-width: 680px;
    margin: 0 auto;
  }

  .apply-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 1.25rem;
  }

  .apply-title .accent { color: var(--teal); }

  .apply-body {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 2.5rem;
  }

  .apply-note {
    margin-top: 1.25rem;
    font-size: 0.82rem;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
    letter-spacing: 0.04em;
  }

  /* ── SPONSORS ── */
  .sponsors-section {
    padding: 4rem 3rem;
    border-top: 1px solid rgba(46, 196, 196, 0.1);
  }

  .sponsors-inner {
    max-width: 1100px;
    margin: 0 auto;
  }

  .sponsors-label {
    font-family: 'Courier New', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 2rem;
  }

  .sponsors-row {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .sponsor-chip {
    padding: 0.6rem 1.4rem;
    border: 1px solid rgba(46, 196, 196, 0.15);
    border-radius: 4px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    transition: border-color 0.2s, color 0.2s;
  }

  .sponsor-chip:hover { border-color: rgba(46, 196, 196, 0.4); color: var(--white); }

  /* ── FOOTER ── */
  footer {
    padding: 3rem;
    border-top: 1px solid rgba(255,255,255,0.06);
  }

  .footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .footer-left {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--teal);
    font-weight: 700;
  }

  .footer-links {
    display: flex;
    gap: 2rem;
    list-style: none;
  }

  .footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.82rem;
    transition: color 0.2s;
  }

  .footer-links a:hover { color: var(--white); }

  .footer-right {
    font-size: 0.78rem;
    color: rgba(139, 163, 188, 0.5);
  }

  /* ── SCROLL REVEAL ── */
  .reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 768px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { display: none; }
    .hero { padding: 7rem 1.5rem 4rem; }
    .section { padding: 4rem 1.5rem; }
    .thesis-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .speakers-grid { grid-template-columns: 1fr 1fr; }
    .venue-layout { grid-template-columns: 1fr; gap: 2.5rem; }
    .stats-inner { justify-content: flex-start; gap: 2.5rem; }
    .apply-section { padding: 4rem 1.5rem; }
    .sponsors-section { padding: 3rem 1.5rem; }
  }

  @media (prefers-reduced-motion: reduce) {
    .reveal { transition: none; opacity: 1; transform: none; }
    .hero-query .cursor { animation: none; }
  }

    .coc-hero {
    padding: 8rem 3rem 4rem;
    border-bottom: 1px solid rgba(46, 196, 196, 0.12);
  }

  .coc-hero-inner {
    max-width: 800px;
    margin: 0 auto;
  }

  .coc-body {
    padding: 4rem 3rem 6rem;
  }

  .coc-inner {
    max-width: 800px;
    margin: 0 auto;
  }

  .coc-section {
    margin-bottom: 3rem;
  }

  .coc-section h2 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--teal);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(46, 196, 196, 0.15);
  }

  .coc-section h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin: 1.5rem 0 0.75rem;
  }

  .coc-section p {
    font-size: 0.97rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 1rem;
  }

  .coc-section ul {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
  }

  .coc-section ul li {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.65;
    padding-left: 1.25rem;
    position: relative;
  }

  .coc-section ul li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: rgba(46, 196, 196, 0.4);
  }

  .coc-section ul li strong {
    color: var(--white);
    font-weight: 600;
  }

  /* Notice box */
  .notice-box {
    background: rgba(245, 194, 107, 0.07);
    border: 1px solid rgba(245, 194, 107, 0.25);
    border-radius: 8px;
    padding: 1.5rem 1.75rem;
    margin-bottom: 3rem;
  }

  .notice-box .notice-label {
    font-family: 'Courier New', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 0.6rem;
  }

  .notice-box p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.75;
    margin: 0;
  }

  .notice-box p em {
    color: var(--white);
    font-style: normal;
  }

  /* Response matrix table */
  .matrix-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.25rem 0 1.5rem;
    font-size: 0.88rem;
  }

  .matrix-table th {
    background: rgba(46, 196, 196, 0.08);
    color: var(--teal);
    font-family: 'Courier New', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(46, 196, 196, 0.2);
  }

  .matrix-table td {
    padding: 1rem;
    color: var(--text-muted);
    line-height: 1.6;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    vertical-align: top;
  }

  .matrix-table tr:last-child td {
    border-bottom: none;
  }

  .matrix-table td:first-child {
    color: var(--white);
    font-weight: 600;
    white-space: nowrap;
  }

  .level-1 td:first-child { color: var(--teal); }
  .level-2 td:first-child { color: var(--gold); }
  .level-3 td:first-child { color: var(--coral); }

  .matrix-table tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.02);
  }

  /* Numbered steps */
  .steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1rem 0;
  }

  .step {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
  }

  .step-num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(46, 196, 196, 0.12);
    color: var(--teal);
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
  }

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

  .step-text strong { color: var(--white); }

  /* Confidentiality callout */
  .callout {
    background: var(--navy-mid);
    border-left: 3px solid var(--rose);
    border-radius: 0 6px 6px 0;
    padding: 1.25rem 1.5rem;
    margin: 1.25rem 0;
  }

  .callout p {
    margin: 0;
    font-size: 0.93rem;
    color: var(--text-muted);
    line-height: 1.7;
  }

  .callout strong { color: var(--rose); }

  @media (max-width: 768px) {
    .coc-hero { padding: 7rem 1.5rem 3rem; }
    .coc-body { padding: 3rem 1.5rem 4rem; }
    .matrix-table { font-size: 0.8rem; }
    .matrix-table th, .matrix-table td { padding: 0.6rem 0.75rem; }
  }