@media (max-width: 1200px) {
  .site-header__primary { grid-template-columns: 130px minmax(260px, 1fr) auto; gap: 18px; }
  .primary-navigation { gap: 24px; }
  .utility-navigation { gap: 2px; }
  .utility-link { width: 40px; height: 40px; min-width: 40px; min-height: 40px; }
  .catalog-controls { grid-template-columns: 2fr repeat(3, 1fr); }
  .catalog-controls > :nth-child(n+5) { display: none; }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .site-footer__columns { grid-template-columns: repeat(3, 1fr); row-gap: 44px; }
}

@media (max-width: 900px) {
  :root { --header-height: 66px; }
  .site-header__primary { grid-template-columns: 1fr auto; }
  .primary-navigation { position:static; transform:none; order: 3; grid-column: 1 / -1; width: 100%; height: 48px; justify-content: flex-start; overflow-x: auto; }
  .global-nav-menu,.global-nav-menu--home{position:fixed;top:calc((2 * var(--header-height)) - 1px);left:var(--gutter);right:var(--gutter);width:auto;max-height:calc(100svh - (2 * var(--header-height)) - var(--gutter));transform:none;grid-template-columns:1fr 1fr;border-radius:0 0 18px 18px}
  .utility-navigation { display: flex; }
  .room-navigation { grid-template-columns: 36px minmax(0,1fr) 36px; }
  .room-navigation__track { justify-content: flex-start; }
  .showroom-hero__frame { min-height: 690px; }
  .room-summary { left: 24px; right: auto; bottom: 24px; }
  .section-heading, .living-room-intro, .split-feature, .professional-hero { grid-template-columns: 1fr; gap: 28px; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--6 { grid-template-columns: repeat(3, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps .step:last-child { grid-column: 1 / -1; }
  .art-gallery { grid-template-columns: repeat(2, 1fr); }
  .art-gallery > :last-child { display: none; }
  .site-footer__intro { grid-template-columns: 1fr; gap: 18px; }
}

@media (max-width: 640px) {
  :root { --gutter: 18px; }
  h1 { font-size: clamp(42px, 13vw, 62px); }
  .utility-link { width: 38px; height: 38px; min-width: 38px; min-height: 38px; }
  .utility-link img { width: 20px; height: 20px; }
  .showroom-hero { padding-inline: 10px; }
  .showroom-hero__frame { min-height: 650px; border-radius: 24px; }
  .showroom-hero__content { align-content: start; padding-top: 70px; }
  .showroom-hero__shade { background: linear-gradient(180deg, rgba(0,0,0,.70), rgba(0,0,0,.16) 70%); }
  .room-hotspot { display: none; }
  .room-summary { grid-template-columns: 1fr 1fr; left: 18px; right: 18px; bottom: 18px; }
  .grid--2, .grid--3, .grid--4, .grid--6, .product-grid, .steps, .art-gallery { grid-template-columns: 1fr; }
  .room-choice-card { display: grid; grid-template-columns: 80px 1fr; text-align: left; align-items: center; }
  .room-choice-card__image { width: 74px; height: 74px; margin: 0; grid-row: 1 / span 2; }
  .catalog-controls { grid-template-columns: 1fr; }
  .catalog-controls > :nth-child(n+4) { display: none; }
  .room-total { grid-template-columns: 1fr; }
  .room-total__price { text-align: left; }
  .site-footer__columns { grid-template-columns: 1fr; }
  .footer-group { border-bottom: 1px solid var(--color-border); padding-bottom: 18px; }
  .site-footer__bottom { flex-direction: column; }
  .search-suggestions { grid-template-columns: 1fr; }
  .global-nav-menu,.global-nav-menu--home{grid-template-columns:1fr}
}

/* Patch H1 — Home mega menu responsive composition */
@media (max-width: 1100px) {
  .home-mega-menu__body { grid-template-columns: 280px minmax(0, 1fr); }
  .home-mega-menu__areas,
  .home-mega-menu__category-stage { padding: 18px; }
  .home-mega-menu__solution-stage { padding: 20px; }
  .home-mega-menu__links { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .home-mega-menu {
    top: calc((2 * var(--header-height)) - 1px);
    left: var(--gutter);
    right: var(--gutter);
    width: auto;
    max-height: calc(100svh - (2 * var(--header-height)) - var(--gutter));
    transform: none;
  }

  .home-mega-menu__body {
    min-height: 480px;
    grid-template-columns: 240px minmax(0, 1fr);
  }

  .home-mega-menu__topline { min-height: 72px; padding: 15px 18px; }
  .home-mega-menu__topline strong { font-size: 16px; }
  .home-mega-menu__areas,
  .home-mega-menu__category-stage,
  .home-mega-menu__solution-stage { padding: 16px; }
  .home-mega-menu__solution-heading { grid-template-columns: 1fr; gap: 12px; }
}

@media (max-width: 700px) {
  .home-mega-menu { overflow: auto; }
  .home-mega-menu__topline { align-items: flex-start; }
  .home-mega-menu__all { display: none; }
  .home-mega-menu__body {
    min-height: 0;
    display: block;
  }
  .home-mega-menu__areas,
  .home-mega-menu__category-stage {
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }
  .home-mega-menu__areas {
    display: flex;
    gap: 6px;
    overflow-x: auto;
  }
  .home-mega-menu__areas .home-mega-menu__column-label { display: none; }
  .home-mega-menu__area {
    width: auto;
    min-width: max-content;
    grid-template-columns: 1fr;
  }
  .home-mega-menu__area .home-mega-menu__arrow { display: none; }
  .home-mega-menu__category-stage { padding-bottom: 14px; }
  .home-mega-menu__category-panel { min-height: 0; }
  .home-mega-menu__stage-intro { margin-bottom: 12px; }
  .home-mega-menu__categories {
    display: flex;
    gap: 6px;
    overflow-x: auto;
  }
  .home-mega-menu__category {
    width: auto;
    min-width: max-content;
    grid-template-columns: 1fr;
  }
  .home-mega-menu__category .home-mega-menu__arrow,
  .home-mega-menu__section-link { display: none; }
  .home-mega-menu__solution-stage { overflow: visible; }
  .home-mega-menu__links { grid-template-columns: 1fr; }
}

/* Patch H2 — classic catalogue responsiveness */
@media (max-width: 1100px) {
  .catalog-page__title-row { grid-template-columns: 1fr; gap: 20px; }
  .catalog-page__title-row p { max-width: 720px; }
  .catalog-filter-panel { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-filter-clear { justify-self: start; }
  .catalog-product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .catalog-product-preview__layout { grid-template-columns: minmax(0, 1fr) minmax(330px, .8fr); gap: 42px; }
}

@media (max-width: 760px) {
  .catalog-page { padding-top: 22px; }
  .catalog-toolbar { min-height: 60px; }
  .catalog-sort > span { display: none; }
  .catalog-product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 12px; }
  .catalog-product-card__media { border-radius: 14px; }
  .catalog-product-card__meta { display: block; }
  .catalog-product-card__meta span:last-child { display: block; margin-top: 3px; text-align: left; }
  .catalog-product-card__footer { display: grid; gap: 4px; }
  .catalog-product-card__footer span { text-align: left; }
  .catalog-product-preview__layout { grid-template-columns: 1fr; }
  .catalog-product-preview__media { min-height: 460px; }
  .catalog-product-preview__content { position: static; padding-top: 0; }
}

@media (max-width: 520px) {
  .catalog-page__title-row h1 { font-size: 44px; }
  .catalog-toolbar { gap: 12px; }
  .catalog-result-count { display: none; }
  .catalog-sort select { max-width: 170px; }
  .catalog-filter-panel { grid-template-columns: 1fr; }
  .catalog-product-grid { grid-template-columns: 1fr; gap: 34px; }
  .catalog-product-card__media { aspect-ratio: 4 / 4.7; }
  .catalog-product-card h2 { min-height: 0; }
  .catalog-product-preview__facts { grid-template-columns: 1fr; }
}


/* V2-05.3.3 — keep integrated media architecture at responsive breakpoints. */
@media (max-width: 760px) {
  .catalogue-workspace-v2 .catalog-product-card__media,
  .catalogue-workspace-v2 .heater-product-card__media {
    aspect-ratio: 4 / 3;
    border-radius: 0;
  }

  .catalogue-workspace-v2 .catalog-product-card__footer,
  .catalogue-workspace-v2 .heater-product-card__footer {
    display: flex;
    align-items: flex-end;
    gap: 8px;
  }
}

@media (max-width: 520px) {
  .catalogue-workspace-v2 .catalog-product-card__media,
  .catalogue-workspace-v2 .heater-product-card__media {
    aspect-ratio: 4 / 3;
  }
}