/* ====== TABLET (max-width: 768px) ====== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }

  .hero {
    min-height: 90vh;
    padding: 100px 16px 60px;
  }

  .hero-video {
    opacity: 0.5;
  }

  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cards-grid .card:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    justify-self: center;
  }

  .solution {
    flex-direction: column-reverse;
    gap: 40px;
    text-align: center;
  }

  .benefits-list {
    text-align: left;
  }

  .solution-temp {
    margin-bottom: 20px;
  }

  .triangle-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .triangle-grid-right {
    display: none;
  }

  .triangle-canvas-wrapper {
    width: 320px;
  }

  .triangle-top-row {
    flex-direction: column;
    align-items: center;
    gap: 24px;
  }

  .triangle-metrics {
    flex-direction: row;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
  }

  .metric {
    align-items: center;
    text-align: center;
  }

  .metric-value {
    font-size: 1.4rem;
  }

  .business-models {
    grid-template-columns: repeat(2, 1fr);
  }

  .business-models .model-card:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    justify-self: center;
  }

  .timeline {
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
    padding-top: 0;
    padding-left: 20px;
  }

  .timeline-track {
    top: 0;
    bottom: 0;
    left: 15px;
    right: auto;
    width: 1px;
    height: 100%;
  }

  .timeline-item {
    text-align: left;
    padding: 0 0 0 32px;
  }

  .timeline-dot {
    position: absolute;
    left: -22px;
    top: 4px;
    margin: 0;
  }

  .timeline-text {
    max-width: none;
    margin: 0;
  }

  .founder-content {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 32px;
  }

  .founder-photo-wrapper {
    width: 180px;
  }

  .publications ul {
    align-items: center;
  }

  .pub-link {
    text-align: center;
  }

  .cta-section {
    padding: 60px 16px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

/* ====== MOBILE (max-width: 480px) ====== */
@media (max-width: 480px) {
  .hero-video-main {
    display: none;
  }

  .hero-video-fun {
    opacity: 0.15;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .cards-grid .card:last-child {
    max-width: none;
  }

  .business-models {
    grid-template-columns: 1fr;
  }

  .business-models .model-card:last-child {
    max-width: none;
  }

  .triangle-grid-right {
    display: none;
  }

  .triangle-canvas-wrapper,
  .triangle-metrics {
    display: none;
  }

  .triangle-sliders {
    display: flex;
  }

  .slider-group {
    flex-direction: column;
    align-items: stretch;
  }

  .slider-group label {
    min-width: auto;
  }

  .slider-value {
    text-align: left;
  }

  .modal {
    padding: 32px 20px;
  }

  .btn {
    padding: 12px 24px;
    font-size: 14px;
  }
}