:root {
  --responsive-gutter: clamp(16px, 3vw, 48px);
  --responsive-content: 1440px;
  --responsive-gap: clamp(12px, 1.6vw, 24px);
}

*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: hidden; }
body { min-width: 320px; overflow-x: clip; }
img, video, svg, canvas { max-width: 100%; }
button, input, select, textarea { max-width: 100%; }
.shell { width: min(var(--responsive-content), calc(100% - (var(--responsive-gutter) * 2))); }
.view, .route-view, .content-section, .product-card, .product-body, .card-main-info, .card-purchase-panel, .section-heading > *, .header-main > * { min-width: 0; }
.mobile-nav-toggle { display: none; }
.section-heading { gap: 18px; }
.featured-controls { min-width: 0; }
.pill-tabs { max-width: 100%; }
.product-grid.list-layout, .product-grid.wide.list-layout { grid-template-columns: 1fr; }
.product-grid.list-layout .product-card { grid-template-columns: minmax(260px, 34%) minmax(0, 1fr); }
.product-grid.list-layout .product-body { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: clamp(22px, 3vw, 48px); align-content: center; }
.product-grid.list-layout .product-media { overflow: hidden; padding: clamp(10px, 1.2vw, 18px); }
.product-grid.list-layout .product-card-image { position: absolute; inset: clamp(10px, 1.2vw, 18px); width: calc(100% - (clamp(10px, 1.2vw, 18px) * 2)); height: calc(100% - (clamp(10px, 1.2vw, 18px) * 2)); max-width: none; margin: 0; object-fit: contain; object-position: center; }
.product-grid.list-layout .product-badge, .product-grid.list-layout .wish-button { z-index: 2; }
.product-grid.list-layout .product-media:hover .product-card-image { transform: none; }
.product-grid.list-layout .card-purchase-panel { padding-left: clamp(20px, 2.5vw, 36px); border-left: 1px solid var(--line); }
.product-grid.list-layout .card-actions { width: 100%; }

/* Wide desktop: use space without stretching readable content beyond its useful measure. */
@media (min-width: 1600px) {
  :root { --responsive-content: 1480px; --responsive-gutter: 56px; }
  .product-grid.list-layout .product-card { grid-template-columns: minmax(340px, 31%) minmax(0, 1fr); }
  .product-grid.list-layout .product-body { padding-inline: clamp(34px, 3vw, 52px); }
  .product-grid.list-layout .product-body { grid-template-columns: minmax(0, 1.45fr) minmax(300px, .55fr); }
  .product-grid.list-layout .card-summary { max-width: 72ch; }
}

/* Compact desktop. */
@media (max-width: 1279px) {
  :root { --responsive-gutter: clamp(20px, 2.6vw, 34px); }
  .header-main { grid-template-columns: auto auto minmax(260px, 1fr) auto auto auto; gap: 9px; }
  .brand { min-width: 172px; }
  .deliver-control { padding-inline: 8px; }
  .header-action { padding-inline: 7px; }
  .primary-nav button, .primary-nav > a { padding-inline: 12px; }
  .product-grid.list-layout .product-card { grid-template-columns: minmax(280px, 36%) minmax(0, 1fr); }
  .product-grid.list-layout .product-body { padding: clamp(22px, 2.5vw, 32px); }
  .business-type-grid, .dealer-sector-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* Tablet landscape and small laptops: header becomes a deliberate two-row application bar. */
@media (max-width: 1024px) {
  :root { --responsive-gutter: clamp(16px, 2.5vw, 26px); }
  .notice-bar { min-height: 30px; padding-inline: var(--responsive-gutter); }
  .header-main { min-height: 0; height: auto; grid-template-columns: minmax(0, 1fr) auto auto; grid-template-rows: auto auto; gap: 10px; padding-block: 10px; }
  .brand { min-width: 0; }
  .deliver-control, .country-menu, .header-action { display: none; }
  .cart-button { grid-column: 2; grid-row: 1; }
  .mobile-nav-toggle { grid-column: 3; grid-row: 1; display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-width: 78px; min-height: 44px; padding: 8px 11px; border: 1px solid #c9dcda; border-radius: 11px; background: #f1f8f6; color: #143f41; font-size: 13px; cursor: pointer; }
  .mobile-nav-toggle span { font-size: 18px; }
  .search { grid-column: 1 / -1; grid-row: 2; width: 100%; }
  .primary-nav { display: none; height: auto; max-height: min(62vh, 520px); grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 7px; padding: 10px var(--responsive-gutter) 14px; overflow: auto; border-top: 1px solid var(--line); }
  .primary-nav.nav-open { display: grid; }
  .primary-nav button, .primary-nav > a { justify-content: flex-start; min-height: 44px; height: auto; padding: 10px 12px; border: 1px solid #d8e4e2; border-radius: 9px; background: #fff; }
  .primary-nav button:hover, .primary-nav button.active, .primary-nav > a:hover { border-color: #00877c; background: #eef8f6; }
  .category-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .product-grid, .product-grid.wide { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-grid.list-layout { grid-template-columns: 1fr; }
  .product-grid.list-layout .product-card { grid-template-columns: minmax(300px, 40%) minmax(0, 1fr); }
  .product-grid.list-layout .product-media { min-height: clamp(280px, 36vw, 360px); }
  .product-grid.list-layout .product-body { display: block; }
  .product-grid.list-layout .card-purchase-panel { margin-top: 16px; padding: 16px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .product-grid.list-layout .card-actions { width: 100%; }
  .hero-slide { grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); }
  .hero-content { padding: 48px 32px 70px; }
  .hero h1 { font-size: clamp(42px, 6vw, 58px); }
  .route-hero, .route-hero.compact { padding: clamp(28px, 4vw, 40px); }
  .vehicle-card, .vehicle-deal-layout, .dealer-review-layout, .customer-account-shell, .seller-dashboard-shell { min-width: 0; }
  .care-path-grid, .scan-class-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .agent-role-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1024px) {
  .catalog-page { width:calc(100% - 28px); }
  .catalog-layout { grid-template-columns:200px minmax(0,1fr); gap:16px; }
  .catalog-sidebar { top:138px; }
}

/* Tablet portrait: cards stack before their text or controls become compressed. */
@media (max-width: 800px) {
  .shell { width: min(100% - 32px, var(--responsive-content)); }
  .primary-nav { grid-template-columns: repeat(3, minmax(0, 1fr)); padding-inline: 16px; }
  .hero-slide { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .service-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .featured-controls { width: 100%; justify-content: space-between; }
  .pill-tabs { overflow-x: auto; scrollbar-width: thin; }
  .product-grid.list-layout .product-card { display: block; min-height: 0; }
  .product-grid.list-layout .product-media { width: 100%; height: clamp(260px, 58vw, 420px); min-height: 0; }
  .product-grid.list-layout .product-body { display: block; padding: clamp(20px, 4vw, 30px); }
  .product-grid.list-layout .card-purchase-panel { margin-top: 16px; padding: 16px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .product-grid.list-layout .card-actions { width: 100%; }
  .auto-hero, .manufacturer-page-hero, .dealer-network-hero, .vehicle-deal-layout, .dealer-foundation, .care-hero, .care-feedback, .automation-studios { grid-template-columns: 1fr; }
  .business-type-grid, .dealer-sector-grid, .company-offering-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dialog-layout, .pdp-layout { grid-template-columns: 1fr; }
}

@media (max-width: 800px) {
  .catalog-filter-toggle { display:block; }
  .catalog-layout { display:block; }
  .catalog-sidebar { display:none; position:static; max-height:none; margin-bottom:16px; padding:18px; border:1px solid var(--line); background:#fff; border-radius:14px; }
  .catalog-sidebar.filters-open { display:block; }
  .sidebar-filter-list { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .size-filter-grid { grid-template-columns:repeat(4,minmax(0,1fr)); }
}

/* Large phones and narrow tablets. */
@media (max-width: 640px) {
  :root { --responsive-gutter: 14px; }
  .shell { width: calc(100% - 28px); }
  .notice-bar { display: none; }
  .site-header { top: 0; }
  .header-main { grid-template-columns: minmax(0, 1fr) auto auto; padding-block: 9px; }
  .brand small { display: block; }
  .cart-button { min-width: 58px; }
  .mobile-nav-toggle { min-width: 48px; padding-inline: 10px; }
  .mobile-nav-toggle strong { display: none; }
  .primary-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .search { min-height: 44px; }
  .search select { width: 96px; }
  .search input { min-width: 0; }
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .category-card { min-height: 122px; }
  .product-grid, .product-grid.wide { grid-template-columns: 1fr; }
  .featured-controls { align-items: stretch; flex-direction: column; }
  .pill-tabs { width: 100%; }
  .product-layout-toggle { align-self: flex-start; }
  .product-grid.list-layout .product-media { height: clamp(220px, 58vw, 320px); }
  .product-grid.list-layout .product-body h3 { overflow-wrap: anywhere; font-size: clamp(22px, 6vw, 28px); }
  .product-grid.list-layout .card-actions { display: grid; grid-template-columns: minmax(0, 1fr) auto; }
  .service-strip { grid-template-columns: 1fr; }
  .service-strip button { border-right: 0; border-bottom: 1px solid var(--line); }
  .trust-grid, .promotion-grid, .health-grid, .care-path-grid, .care-promise-grid, .scan-class-grid, .agent-role-grid, .business-type-grid, .dealer-sector-grid, .company-offering-grid { grid-template-columns: 1fr; }
  .route-view { padding-top: 20px; }
  .route-hero h1 { overflow-wrap: anywhere; font-size: clamp(32px, 9vw, 42px); }
  .live-help { right: 10px; bottom: 10px; }
  .live-help-launcher { min-width: 52px; grid-template-columns: 36px; }
  .live-help-launcher strong, .live-help-launcher small { display: none; }
  .live-help-panel { width: calc(100vw - 20px); right: 0; }
  .cart-drawer { width: min(100vw, 420px); }
}

/* Small phones. */
@media (max-width: 420px) {
  .shell { width: calc(100% - 20px); }
  .header-main { grid-template-columns: minmax(0, 1fr) auto auto; gap: 6px; }
  .brand { gap: 7px; }
  .brand-mark { width: 40px; height: 40px; }
  .brand strong { font-size: 18px; }
  .brand small { font-size: 12px; letter-spacing: .08em; }
  .cart-button { min-width: 50px; padding-inline: 8px; }
  .mobile-nav-toggle { min-width: 44px; }
  .search select { width: 82px; padding-left: 10px; }
  .search input { padding-inline: 10px; }
  .primary-nav { padding-inline: 10px; }
  .category-card { padding: 14px 10px; }
  .hero h1 { font-size: clamp(36px, 11vw, 44px); }
  .hero-content { padding: 34px 20px 66px; }
  .product-grid.list-layout .product-media { height: clamp(200px, 65vw, 270px); }
  .product-grid.list-layout .product-body { padding: 18px; }
  .product-grid.list-layout .card-actions { grid-template-columns: 1fr; }
  .product-grid.list-layout .card-actions button { width: 100%; }
  .care-hero, .care-feedback, .automation-architecture { padding: 20px; border-radius: 18px; }
}
@media(max-width:640px){.slide-settings-dialog #slide-setting-options{grid-template-columns:1fr}.slide-settings-dialog footer{align-items:stretch;flex-direction:column}.slide-settings-dialog footer button{width:100%}}

@media (max-width: 420px) {
  .catalog-page { width:calc(100% - 20px); }
  .sidebar-filter-list { grid-template-columns:1fr; }
}

@media (max-width: 640px) {
  .home-discovery { padding-block: 10px 48px; }
  .discovery-panel { padding: 18px; border-radius: 14px; }
  .discovery-heading { align-items: flex-start; }
  .discovery-heading h2 { font-size: 25px; }
  .discovery-heading p { max-width: 30ch; }
  .discovery-rail { grid-auto-columns: minmax(245px, 82vw); }
}

@media (max-width: 420px) {
  .discovery-heading { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; }
  .discovery-heading p { grid-column: 1 / -1; }
  .discovery-actions { justify-content:flex-start; grid-column:1 / -1; }
  .discovery-card { grid-template-columns: 82px minmax(0, 1fr); }
  .discovery-media { width: 82px; height: 98px; }
}