@media (max-width: 1120px) {
  .primary-nav {
    display: none;
  }

  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .mobile-nav-button {
    display: grid;
    place-items: center;
  }

  .site-header.mobile-open .primary-nav {
    position: absolute;
    top: 76px;
    left: 20px;
    right: 20px;
    display: grid;
    padding: 12px;
    border: 1px solid var(--io-border);
    border-radius: var(--io-radius-md);
    background: var(--io-surface);
    box-shadow: var(--io-shadow);
  }

  .site-header.mobile-open .nav-link {
    border-radius: 10px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.68fr);
  }

  .material-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .tool-strip,
  .kpi-grid,
  .info-grid,
  .depot-status-grid,
  .dispatch-board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .kanban-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .quote-detail {
    position: static;
  }
}

@media (max-width: 900px) {
  .hero {
    padding-top: 54px;
  }

  .hero-grid,
  .section-heading,
  .page-hero-grid,
  .finder-layout,
  .calculator-layout,
  .delivery-layout,
  .portal-grid,
  .owner-layout {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 380px;
  }

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

  .hero-stat:nth-child(2) {
    border-right: 0;
  }

  .hero-stat:nth-child(-n + 2) {
    border-bottom: 1px solid #dbe2de;
  }

  .material-grid,
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .material-toolbar {
    grid-template-columns: 1fr;
  }

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

  .internal-sidebar {
    position: static;
    height: auto;
    padding: 14px 20px;
    border-right: 0;
    border-bottom: 1px solid var(--io-border);
  }

  .internal-sidebar .brand-lockup,
  .sidebar-note,
  .sidebar-divider {
    display: none;
  }

  .sidebar-nav {
    display: flex;
    gap: 8px;
    overflow-x: auto;
  }

  .sidebar-link {
    min-width: max-content;
  }

  .internal-topbar {
    position: sticky;
    top: 0;
    z-index: 60;
  }

  .quote-summary {
    position: static;
  }
}

@media (max-width: 660px) {
  .container,
  .header-inner,
  .portal-header-inner,
  .internal-topbar-inner,
  .internal-content {
    width: min(calc(100% - 28px), var(--io-max));
  }

  .demo-ribbon {
    padding-inline: 12px;
    font-size: 10px;
  }

  .header-actions .button-secondary,
  .header-actions .button {
    display: none;
  }

  .brand-copy strong {
    font-size: 13px;
  }

  .hero {
    min-height: auto;
    padding-top: 44px;
  }

  .hero h1 {
    font-size: clamp(44px, 14vw, 64px);
  }

  .hero-visual {
    min-height: 330px;
  }

  .hero-visual img {
    min-height: 290px;
  }

  .hero-asset-fallback {
    width: 240px;
    height: 240px;
    font-size: 34px;
  }

  .hero-stat-strip {
    margin-top: 34px;
  }

  .hero-stat {
    min-height: 92px;
    padding: 18px;
  }

  .section {
    padding: 64px 0;
  }

  .section-heading h2,
  .page-hero h1 {
    font-size: 38px;
  }

  .card-grid,
  .card-grid.two,
  .material-grid,
  .finder-options,
  .option-grid,
  .tool-strip,
  .form-grid,
  .form-grid.three,
  .quote-material-list,
  .kpi-grid,
  .product-detail-layout,
  .calc-embed,
  .calc-embed-fields,
  .info-grid,
  .fulfillment-cards,
  .depot-status-grid,
  .dispatch-board {
    grid-template-columns: 1fr;
  }

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

  .material-card {
    min-height: auto;
  }

  .segmented-control {
    width: 100%;
    overflow-x: auto;
    border-radius: 16px;
  }

  .segmented-control button {
    min-width: max-content;
  }

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

  .quote-footer,
  .dashboard-title,
  .mission-card-head,
  .footer-grid {
    align-items: stretch;
    flex-direction: column;
  }

  .quote-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .quote-footer .button,
  .quote-footer .button-secondary,
  .quote-footer .button-quiet {
    width: 100%;
  }

  .dashboard-title {
    display: grid;
  }

  .mission-card-head {
    display: grid;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
  }

  .prototype-switcher {
    right: 10px;
    bottom: 10px;
    left: 10px;
    justify-content: space-between;
    overflow-x: auto;
  }

  .prototype-switcher a {
    flex: 1 0 auto;
    text-align: center;
  }

  .bar-row {
    grid-template-columns: 92px minmax(90px, 1fr) 46px;
  }

  .modal-body {
    padding: 20px;
  }
}

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

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Final mobile header normalization */
@media (max-width: 660px) {
  .header-inner { gap: 10px; }
  .brand-copy small {
    max-width: 175px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .mobile-nav-button {
    width: 54px;
    min-width: 54px;
    border-radius: 999px;
    font-size: 12px;
  }
}

@media (max-width: 440px) {
  .header-inner { gap: 8px; }
  .brand-copy small { display: none; }
}