@media (max-width: 1120px) {
  .product-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .category-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .preview-grid,
  .existing-images {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .main-nav {
    grid-template-columns: auto 1fr auto;
  }

  .search-bar {
    order: 3;
    grid-column: 1 / -1;
    margin-bottom: 14px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 118px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--white);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
  }

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

  .hero-grid,
  .detail-layout,
  .footer-grid,
  .split-panel {
    grid-template-columns: 1fr;
  }

  .banner-card--featured {
    min-height: 280px;
  }

  .product-grid,
  .product-grid--compact,
  .category-grid,
  .variant-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-form .variant-list {
    grid-template-columns: 1fr;
  }

  .seller-sidebar {
    transform: translateX(-102%);
    transition: transform 0.24s ease;
  }

  .seller-sidebar.is-open {
    transform: translateX(0);
  }

  .seller-main {
    width: 100%;
    margin-left: 0;
  }

  .sidebar-toggle {
    display: inline-flex;
  }

  .seller-topbar {
    padding: 0 18px;
  }

  .seller-content {
    width: 100%;
    max-width: none;
    padding-inline: 18px;
  }

  .filter-bar,
  .form-grid,
  .variant-row,
  .inline-editor__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .seller-content {
    width: 100%;
    max-width: none;
    padding-inline: 16px;
  }

  .top-strip__inner {
    justify-content: center;
    text-align: center;
  }

  .top-strip__inner span:last-child {
    display: none;
  }

  .brand-mark img {
    width: 132px;
  }

  .hero-copy {
    padding: 26px;
    border-radius: 24px;
  }

  .hero-copy h1,
  .page-hero h1 {
    font-size: 34px;
  }

  .hero-search {
    border-radius: 18px;
    flex-direction: column;
  }

  .hero-search button {
    min-height: 46px;
  }

  .section-heading--split,
  .seller-heading,
  .panel-header {
    align-items: start;
    flex-direction: column;
  }

  .category-strip,
  .category-grid,
  .product-grid--compact,
  .variant-list,
  .stat-grid,
  .spec-grid {
    grid-template-columns: 1fr;
  }

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

  .product-extra-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .detail-description,
  .product-extra-card,
  .product-description-content,
  .product-info-value,
  .purchase-note-item {
    max-width: 100%;
    min-width: 0;
    overflow-wrap: anywhere;
    word-break: break-word;
    white-space: normal;
  }

  .product-extra-card {
    padding: 18px;
    border-radius: 18px;
  }

  .product-extra-card__head h2 {
    font-size: 18px;
  }

  .product-extra-card__head p,
  .product-note-list p {
    font-size: 13px;
  }

  .product-note-list {
    gap: 8px;
  }

  .product-note-list p {
    padding: 11px 12px;
  }

  .product-info-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .gallery__thumbs {
    grid-template-columns: repeat(4, 1fr);
  }

  .detail-price strong {
    font-size: 26px;
  }

  .login-card {
    padding: 24px;
  }

  .seller-panel,
  .form-section {
    padding: 16px;
    border-radius: 18px;
  }

  .preview-grid,
  .existing-images {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sticky-submit {
    align-items: stretch;
    flex-direction: column;
  }

  .sticky-submit .seller-btn {
    width: 100%;
  }
}