/* Comfortable touch browsing within the approved Fuzheng visual system. */
html { scroll-padding-top: calc(var(--header-height) + 18px); }
.category-product-section { content-visibility: auto; contain-intrinsic-size: auto 410px; }
@media (max-width: 1000px) {
  body.reference-style { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
  body.mobile-nav-open { overflow: hidden; }
  body.mobile-nav-open .chat-widget { visibility: hidden; }
  body.reference-style .primary-nav { position: fixed; bottom: 0; max-height: none; padding-bottom: max(28px,env(safe-area-inset-bottom)); overscroll-behavior: contain; }
  body.reference-style .primary-nav a { min-height: 52px; }
  body.reference-style .button { touch-action: manipulation; }
  body.reference-style :is(input,select,textarea) { font-size: 16px; }
  .evidence-product :is(.cms-detail-table-wrap,.technical-table-wrap) { overscroll-behavior-x: contain; -webkit-overflow-scrolling: touch; }
  body.reference-style .mobile-conversion { padding-right: 76px; padding-bottom: max(8px,env(safe-area-inset-bottom)); }
  body.reference-style .chat-launcher { width: 52px; height: 52px; min-height: 52px; padding: 6px; justify-content: center; border-radius: 50%; position: fixed; right: 12px; bottom: calc(6px + env(safe-area-inset-bottom)); }
  body.reference-style .chat-launcher-copy { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  body.reference-style .chat-widget { bottom: calc(80px + env(safe-area-inset-bottom)); right: 16px; }
  body.reference-style .chat-panel { width: min(420px,calc(100vw - 24px)); height: min(540px,calc(100dvh - 110px - env(safe-area-inset-bottom))); }
  body.reference-style .chat-panel-close { width: 44px; height: 44px; }
  body.reference-style .chat-composer textarea { font-size: 16px; }
  body.reference-style .chat-send { font-size: 14px; min-height: 44px; }
  body.reference-style .chat-privacy-note { font-size: 12px; line-height: 1.6; }
  body.reference-style .chat-tool-button { width: 36px; height: 36px; }
  body.reference-style .chat-language-select { flex: 1; font-size: 12px; }
  body.reference-style .chat-language-select select { min-height: 36px; font-size: 16px; }
}
@media (max-width: 640px) {
  body.reference-style .brand-name strong { font-size: 13px; }
  body.reference-style .brand-name small { font-size: 7.5px; }
  body.reference-style .home-hero { min-height: 540px; height: clamp(540px,calc(100svh - var(--header-height) - 72px),640px); max-height: none; }
  body.reference-style .hero-copy { padding-block: 38px 90px; }
  body.reference-style .hero-copy :is(h1,h2) { font-size: clamp(28px,8.2vw,34px); line-height: 1.24; text-wrap: balance; }
  body.reference-style .hero-copy p { font-size: 16px; line-height: 1.7; margin-bottom: 28px; }
  body.reference-style .hero-copy .button { width: min(100%,320px); justify-content: space-between; }
  body.reference-style .hero-controls { bottom: 20px; }
  body.reference-style .button { min-height: 48px; font-size: 14px; padding-inline: 20px; }
  body.reference-style .section { padding-block: 48px; }
  body.reference-style .section-header { margin-bottom: 28px; }
  body.reference-style .section-header h2 { font-size: clamp(24px,6.6vw,28px); text-wrap: balance; }
  body.reference-style :is(.section-header p,.page-hero p,.catalog-hero p,.contact-page-intro p,.rich-text p,.cms-product-detail p) { font-size: 16px; line-height: 1.75; }
  body.reference-style .text-link { display: inline-flex; align-items: center; min-height: 44px; font-size: 14px; }
  body.reference-style .category-orbit { gap: 24px 12px; }
  body.reference-style .category-orbit strong { font-size: 15px; line-height: 1.45; }
  body.reference-style .category-orbit small { font-size: 13px; }
  body.reference-style .catalog-hero { min-height: 0; padding-block: 32px; }
  body.reference-style .catalog-hero h1 { font-size: clamp(27px,7.4vw,32px); line-height: 1.3; text-wrap: balance; }
  body.reference-style .catalog-hero-actions { gap: 10px; }
  body.reference-style .catalog-layout { gap: 28px; }
  body.reference-style .catalog-sidebar .product-family-nav { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); }
  body.reference-style .catalog-sidebar .product-family-nav a { min-height: 64px; padding: 12px 10px; font-size: 13px; line-height: 1.45; gap: 8px; border-bottom: 1px solid var(--line); }
  body.reference-style .catalog-sidebar .product-family-nav a:first-child { grid-column: 1/-1; min-height: 48px; }
  body.reference-style .catalog-sidebar .product-family-nav a:nth-child(even) { border-right: 1px solid var(--line); }
  body.reference-style .category-overview-controls h2 { font-size: 24px; line-height: 1.3; }
  body.reference-style .category-overview-controls p { font-size: 15px; line-height: 1.7; }
  body.reference-style .category-display-options { display: grid; grid-template-columns: 1fr 1.35fr; gap: 12px; width: 100%; }
  body.reference-style .category-display-options label { font-size: 13px; }
  body.reference-style .category-display-options select { width: 100%; min-width: 0; min-height: 48px; padding: 10px; }
  body.reference-style .category-row-heading { gap: 12px; align-items: center; }
  body.reference-style .category-row-heading h2 { font-size: 18px; line-height: 1.4; }
  body.reference-style .category-view-all { flex: 0 0 auto; min-height: 44px; display: inline-flex; align-items: center; font-size: 14px; }
  body.reference-style .category-product-row { gap: 12px; scroll-padding-inline: 1px; scroll-snap-type: x proximity; overscroll-behavior-x: contain; }
  body.reference-style .category-row-product { flex-basis: clamp(164px,46vw,198px); }
  body.reference-style .category-row-image { height: 174px; }
  body.reference-style .category-row-product h3 { padding: 12px; font-size: 14px; line-height: 1.55; min-height: 106px; }
  body.reference-style .featured-module h3 { font-size: 14px; line-height: 1.55; }
  body.reference-style .featured-module-meta { font-size: 12px; }
  body.reference-style .featured-module-actions a { font-size: 13px; min-height: 44px; }
  body.reference-style .feature-tabs { gap: 8px; }
  body.reference-style .feature-tabs button { min-height: 44px; font-size: 14px; }
  body.reference-style .product-card h2 { font-size: 16px; }
  body.reference-style .card-meta { font-size: 13px; }
  body.reference-style .evidence-product .product-summary h1 { font-size: 25px; line-height: 1.35; text-wrap: balance; }
  body.reference-style .evidence-product :is(section[id],article[id]) { scroll-margin-top: 64px; }
  body.reference-style .evidence-product .gallery-main { height: clamp(260px,75vw,340px); }
  body.reference-style .evidence-product .evidence-nav>.container { gap: 20px; scroll-padding-inline: 18px; overscroll-behavior-x: contain; }
  body.reference-style .evidence-product .evidence-nav a { padding-block: 14px; min-height: 48px; font-size: 14px; }
  body.reference-style :is(.rfq-form,.contact-inquiry,.inquiry-popup-form-panel) { padding: 22px 18px; }
  body.reference-style .field label { font-size: 14px; }
  body.reference-style .field :is(input,select) { min-height: 48px; }
  body.reference-style .footer-main { row-gap: 28px; }
  body.reference-style :is(.footer-nav a,.footer-contact a) { min-height: 44px; display: flex; align-items: center; font-size: 14px; }
  body.reference-style .footer-contact address { font-size: 14px; line-height: 1.75; }
  body.reference-style .pagination a { min-width: 44px; min-height: 44px; }
  body.reference-style :is(.cms-detail-table-wrap,.technical-table-wrap):focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
}
@media (hover: none) {
  body.reference-style :is(.button,.chat-launcher,.product-card,.featured-module):hover { transform: none; box-shadow: none; }
}