@media (max-width: 768px) {
  :root {
    --name-size: 2.986rem;
    --h1-size: 1.728rem;
    --h2-size: var(--size-md);
  }

  /* Nav mobile */
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 1.5rem 2rem;
    gap: 1.25rem;
    border-bottom: var(--border);
    z-index: 99;
  }

  .nav-links a {
    border: none;
    padding: 0.4rem 0;
    border-radius: 0;
  }

  .nav-links a.active {
    background: none;
    color: var(--black);
    font-weight: 600;
    border: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  /* Back link on subpages */
  .nav-back {
    display: block;
    padding: 0.75rem 2rem;
    font-size: var(--size-sm);
    color: var(--text2);
    text-decoration: none;
    border-bottom: 1px solid rgba(0,0,0,0.08);
  }
  .nav-back:hover {
    color: var(--black);
  }

  /* Hero grid — stack */
  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-text {
    padding: 3rem 2rem !important;
  }

  .mondrian {
    height: 300px;
    border-left: none;
    border-top: 3px solid var(--black);
  }

  .mondrian .circle-overlay {
    width: 100px;
    height: 100px;
  }

  .m-label {
    font-size: 1rem;
  }

  .m-sublabel {
    display: none;
  }

  /* Page header */
  .page-header {
    padding: 4.5rem 0 2rem;
    margin-top: 0;
    margin-bottom: 1.5rem;
  }

  .page-header::before {
    height: 4px;
    margin-bottom: 2rem;
  }

  .page-header h1 {
    margin-top: 1.5rem;
  }

  .page-header .geo-shapes {
    display: none;
  }

  /* Publication intro */
  .pub-intro {
    padding: 1rem 0;
    font-size: 1rem;
  }

  /* Built grid */
  .built-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --name-size: var(--size-2xl);
  }

  .container {
    padding: 0 1.25rem;
  }

  .hero-text {
    padding: 2rem 1.25rem !important;
  }

  .hero-name {
    font-size: 2.5rem;
  }

  .hero-bio {
    font-size: 0.95rem;
  }
}