@media (max-width: 1360px) {
  :root {
    --gutter: clamp(22px, 3vw, 44px);
    --space-3xl: 104px;
  }

  .header-inner {
    grid-template-columns: minmax(180px, 0.8fr) 1.4fr auto;
    gap: 20px;
  }

  .contact-placeholder {
    display: none;
  }

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

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

@media (max-width: 1120px) {
  :root {
    --header-height: 72px;
  }

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

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

  .header-actions,
  .menu-toggle {
    display: flex;
  }

  .primary-nav.is-open {
    position: fixed;
    inset: var(--header-height) 0 0;
    display: block;
    padding: var(--space-xl) var(--gutter);
    overflow: auto;
    background: rgba(5, 7, 6, 0.98);
  }

  .primary-nav.is-open .nav-list {
    display: grid;
    gap: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .primary-nav.is-open .nav-list > li {
    border-top: 1px solid var(--color-line);
  }

  .primary-nav.is-open .nav-link {
    display: flex;
    align-items: center;
    min-height: 72px;
    padding-block: 18px;
    font-family: var(--font-display);
    font-size: clamp(2rem, 6vw, 4rem);
    letter-spacing: -0.03em;
    line-height: 0.96;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    align-content: end;
  }

  .hero-media::after {
    background: linear-gradient(0deg, #050706 0%, rgba(5, 7, 6, 0.22) 74%, rgba(5, 7, 6, 0.5) 100%);
  }

  .hero-title {
    grid-column: auto;
    max-width: none;
    font-size: clamp(3.8rem, 12vw, 7rem);
  }

  .hero-panel {
    grid-column: auto;
  }

  .hero-panel {
    max-width: 650px;
  }

  .section-head {
    grid-template-columns: 110px minmax(0, 1fr);
  }

  .section-copy {
    grid-column: 2;
  }

  .section-head > :nth-child(3) {
    grid-column: 2;
  }

  .display-title,
  .direction-card h3 {
    max-width: none;
  }

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

  .simulator-layout,
  .service-layout,
  .consultation-layout,
  .product-detail-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .solution-item {
    min-height: 180px;
    border-right: 1px solid var(--color-line);
    border-bottom: 0;
  }

  .solution-item:last-child {
    border-right: 0;
  }

  .service-copy,
  .geography-panel {
    border-left: 0;
    border-top: 1px solid var(--color-line);
  }

  .geography-panel {
    min-height: 560px;
    border-right: 0;
  }

  .solutions-frame {
    grid-template-columns: 1fr;
  }

  .solutions-intro {
    min-height: 360px;
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .footer-main {
    grid-template-columns: 1.2fr repeat(2, 0.8fr);
  }

  .footer-column:last-child {
    grid-column: 2 / -1;
  }

  .product-summary {
    position: static;
  }

  .product-gallery {
    max-width: 920px;
  }
}

@media (max-width: 820px) {
  :root {
    --space-2xl: 64px;
    --space-3xl: 84px;
  }

  .site-shell::before {
    background-size: 25% 100%;
  }

  .header-inner .brand-lockup {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .header-inner .brand-secondary {
    display: block;
    padding-left: 0;
    border-left: 0;
    font-size: 0.56rem;
    letter-spacing: 0.06em;
    line-height: 1;
  }

  .hero {
    min-height: 760px;
  }

  .hero-inner {
    min-height: 760px;
    padding-top: 120px;
  }

  .hero-media img {
    object-position: 38% center;
  }

  .hero-title {
    font-size: clamp(3.8rem, 15vw, 7rem);
    line-height: 0.82;
  }

  .hero-panel {
    padding: var(--space-md) 0;
    background: transparent;
  }

  .hero-rail {
    display: none;
  }

  .section-head {
    grid-template-columns: 74px 1fr;
    gap: var(--space-md);
  }

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

  .direction-card,
  .direction-card--wide {
    min-height: 520px;
    grid-row: auto;
  }

  .simulator-visual,
  .service-visual {
    min-height: 520px;
  }

  .solution-stack {
    grid-template-columns: 1fr;
  }

  .solution-item {
    min-height: 140px;
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

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

  .equipment-stage,
  .equipment-stage img {
    min-height: 700px;
  }

  .equipment-stage img {
    object-position: 38% center;
  }

  .equipment-overlay {
    grid-template-columns: 1fr;
  }

  .equipment-panel {
    margin: var(--space-md);
  }

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

  .category-link:last-child {
    grid-column: 1 / -1;
  }

  .brands-placeholder {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .product-toolbar {
    align-items: start;
    flex-direction: column;
  }

  .service-layout,
  .service-visual {
    min-height: auto;
  }

  .service-visual {
    aspect-ratio: 4 / 3;
  }

  .service-list {
    grid-template-columns: 1fr;
  }

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

  .audience {
    min-height: 510px;
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-column:last-child {
    grid-column: auto;
  }

  .catalog-layout {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .catalog-sidebar {
    position: static;
    display: none;
    max-height: none;
    padding: var(--space-md);
    border: 1px solid var(--color-line);
    overflow: visible;
    overscroll-behavior: auto;
  }

  .catalog-sidebar.is-open {
    display: block;
  }

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

  .page-title {
    font-size: clamp(4rem, 18vw, 7rem);
  }

  .product-gallery {
    grid-template-columns: 1fr;
  }

  .gallery-thumbs {
    grid-template-columns: repeat(3, 90px);
    grid-row: 2;
  }

  .gallery-main,
  .gallery-main img {
    min-height: 560px;
  }

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

  .product-cta > .button,
  .catalog-consultation__inner .button {
    justify-self: start;
  }

  .catalog-consultation__inner {
    min-height: 220px;
  }

}

@media (max-width: 520px) {
  :root {
    --gutter: 18px;
    --space-xl: 42px;
    --space-2xl: 56px;
    --space-3xl: 72px;
  }

  .primary-nav.is-open {
    inset: calc(var(--header-height) + 8px) var(--gutter) auto;
    width: auto;
    max-height: calc(100svh - var(--header-height) - 26px);
    padding: 8px 14px;
    border: 1px solid var(--color-line);
    background: var(--color-surface-2);
  }

  .primary-nav.is-open .nav-link {
    min-height: 58px;
    padding-block: 14px;
    font-size: 1.35rem;
  }

  .button-row .button {
    width: 100%;
  }

  .hero {
    min-height: 720px;
  }

  .hero-inner {
    min-height: 720px;
    gap: var(--space-md);
  }

  .hero-title {
    font-size: clamp(3.4rem, 17vw, 5.7rem);
  }

  .hero-panel p {
    font-size: 1rem;
  }

  .section-head {
    grid-template-columns: 1fr;
  }

  .section-index {
    font-size: 3.5rem;
  }

  .section-copy {
    grid-column: auto;
  }

  .section-head > :nth-child(3) {
    grid-column: auto;
  }

  .direction-card,
  .direction-card--wide {
    min-height: 500px;
  }

  .direction-card h3 {
    font-size: 2.5rem;
  }

  .simulator-visual {
    min-height: 420px;
  }

  .process-rail,
  .category-rail,
  .product-grid,
  .catalog-main .product-grid {
    grid-template-columns: 1fr;
  }

  .category-link:last-child {
    grid-column: auto;
  }

  .equipment-stage,
  .equipment-stage img {
    min-height: 640px;
  }

  .product-card__body {
    min-height: 190px;
  }

  .service-copy {
    padding: var(--space-xl) var(--space-md);
  }

  .audience {
    min-height: 470px;
    padding: var(--space-md);
  }

  .consultation-layout,
  .geography-panel,
  .form-panel {
    min-width: 0;
  }

  .region-list {
    grid-template-columns: 1fr;
  }

  .form-panel,
  .geography-panel {
    padding: var(--space-xl) var(--space-md);
  }

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

  .footer-brand,
  .footer-column:last-child {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .prototype-notice {
    grid-template-columns: 1fr;
  }

  .catalog-meta {
    align-items: stretch;
    flex-direction: column;
  }

  .product-gallery {
    width: 100%;
  }

  .gallery-main,
  .gallery-main img {
    min-height: 430px;
  }

  .gallery-thumbs {
    grid-template-columns: repeat(3, 1fr);
  }

  .product-cta {
    padding: var(--space-md);
  }

  .catalog-consultation__inner {
    min-height: 220px;
    gap: var(--space-lg);
    padding: 0 var(--gutter);
  }

  .product-cta h2 {
    max-width: none;
    font-size: clamp(1.9rem, 9vw, 2.4rem);
    overflow-wrap: anywhere;
  }
}