@media (max-width: 767px) {
  body { padding: 0; }
  .container { padding: 0 var(--space-md, 16px); }
  h1 { font-size: 1.65em; }

  .stats-bar {
    flex-direction: column;
    gap: var(--space-md, 16px);
    padding: var(--space-md, 16px);
    border-radius: 0;
    margin-left: calc(-1 * var(--space-md, 16px));
    margin-right: calc(-1 * var(--space-md, 16px));
  }

  .stat-value { font-size: 1.5em; }

  .grid, .grid--2, .grid--3, .grid--4 {
    grid-template-columns: 1fr;
    gap: var(--space-md, 16px);
  }

  .card { padding: var(--space-md, 16px); }

  .site-nav__links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--color-navy, #1b365d);
    padding: var(--space-sm, 8px) var(--space-lg, 24px) var(--space-lg, 24px);
    border-bottom: 3px solid var(--color-crimson, #8b1a1a);
    box-shadow: var(--shadow-lg, 0 8px 24px rgba(0,0,0,0.15));
    z-index: 100;
  }

  .site-nav__links.open {
    display: flex;
  }

  .site-nav__links a {
    padding: var(--space-sm, 8px) var(--space-md, 16px);
    font-size: 1rem;
  }

  .site-nav__mobile-toggle {
    display: block;
  }

  .progress-nav__inner {
    gap: var(--space-sm, 8px);
  }

  .progress-nav__item {
    font-size: 0.75rem;
    padding: var(--space-xs, 4px) var(--space-xs, 4px);
  }

  .modal {
    max-width: 100%;
    max-height: 95vh;
    margin: var(--space-sm, 8px);
    border-radius: var(--radius-lg, 12px);
  }

  .modal__body { padding: var(--space-md, 16px); }

  .toggle-bar__option {
    padding: 6px 14px;
    font-size: 0.8125rem;
  }

  .evidence-callout {
    flex-direction: column;
    gap: var(--space-sm, 8px);
  }

  .admin-layout {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    position: static;
    max-height: none;
    display: flex;
    gap: var(--space-sm, 8px);
    flex-wrap: wrap;
    padding: var(--space-md, 16px);
  }

  .admin-sidebar__title { width: 100%; }
  .admin-sidebar__link { flex: 1; min-width: 120px; text-align: center; }

  .upload-zone {
    padding: var(--space-lg, 24px) var(--space-md, 16px);
  }

  .table-wrapper {
    font-size: 0.8125rem;
  }

  thead th, tbody td {
    padding: 8px 10px;
  }

  .eb-fallback {
    padding: var(--space-lg, 24px) var(--space-md, 16px);
  }

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

  .docs-toc ul {
    flex-direction: column;
  }

  .docs-quick-links {
    flex-direction: column;
  }

  .page-header h1 {
    font-size: 1.5rem;
  }

  .breadcrumb {
    padding-left: var(--space-md, 16px);
    padding-right: var(--space-md, 16px);
  }
}

@media (min-width: 768px) and (max-width: 1199px) {
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1200px) {
  .container { max-width: var(--container-max, 1140px); }
}

@media (max-width: 767px) {
  a, button { min-height: 44px; min-width: 44px; }

  .tooltip-popup {
    position: fixed;
    bottom: var(--space-md, 16px);
    left: var(--space-md, 16px);
    right: var(--space-md, 16px);
    top: auto;
    transform: none;
    max-width: none;
    z-index: 600;
  }

  .tooltip-popup::after { display: none; }
}

@media (max-width: 767px) {
  body:has(.sidebar) {
    flex-direction: column;
    height: auto;
    min-height: 100vh;
    overflow: auto;
  }
  body:has(.sidebar) .sidebar {
    width: 100%;
    max-height: 45vh;
    min-height: 180px;
    border-right: none;
    border-bottom: 1px solid var(--color-border, #e2e8f0);
  }
  body:has(.sidebar) .main-content { min-height: 50vh; }
}

@media print {
  .site-nav, .progress-nav, .classification-banner, .mode-toggle-wrap,
  .toggle-bar, .modal-overlay, .site-footer { display: none !important; }
  body { background: white; color: black; }
  .container { max-width: 100%; }
  .card { box-shadow: none; border: 1px solid #ccc; break-inside: avoid; }
  .tech-detail { display: block !important; }
}