/* Mobile-only enhancements. Desktop rendering is intentionally untouched. */
@media (max-width: 900px) {
  html,
  body { width: 100%; max-width: 100%; overflow-x: clip; }
  body.nav-open { overflow: hidden; }
  .site-header { position: relative; }
  .header-bar { gap: 12px; }
  .brand, .brand-copy { min-width: 0; }
  .brand-copy strong, .brand-copy small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .nav-toggle { position: relative; flex: 0 0 auto; min-width: 44px; min-height: 44px; cursor: pointer; touch-action: manipulation; }
  .nav-toggle span { transition: transform .2s ease, opacity .2s ease; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .primary-nav { max-height: calc(100dvh - 72px); overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; }
  .primary-nav li > a, .dropdown-inner a, .category-list a, .site-footer a { min-height: 44px; }
  .dropdown-inner a { display: flex; align-items: center; }
  main, section, article, aside, .shell, .content-body, .product-info, .catalog-layout > * { min-width: 0; }
  .content-body, .product-info, .catalog-main-head, .story-copy { overflow-wrap: anywhere; word-break: break-word; }
  .content-body img, .content-body video, .content-body iframe, .content-body embed, .content-body object { max-width: 100% !important; }
  .content-body iframe, .content-body video { width: 100% !important; }
  .content-body table { display: block; width: 100% !important; max-width: 100%; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
  input, select, textarea, button { max-width: 100%; }
  input, select, textarea { font-size: 16px; }
  .pagination { flex-wrap: wrap; }
  .page-banner-inner, .footer-grid, .footer-bottom { min-width: 0; }
}

@media (max-width: 560px) {
  .brand-copy strong { font-size: clamp(16px, 5vw, 20px); }
  .hero img { min-height: 0; }
  .story-media::after { left: -7px; bottom: -7px; }
  .product-card-body, .product-gallery img { padding-inline: 18px; }
  .content-body { margin-top: 40px; }
  .buy-link { display: flex; width: 100%; min-height: 48px; align-items: center; justify-content: center; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  .nav-toggle span { transition: none; }
}

/* Mobile compatibility for older Bootstrap-style content templates. */
@media (max-width: 900px) {
  .container{width:calc(100% - 32px);max-width:700px;margin-inline:auto}
  .row{display:flex;flex-wrap:wrap;margin-inline:-8px}
  [class*="col-"]{position:relative;width:100%;min-width:0;padding-inline:8px}
  .col-6{flex:0 0 50%;max-width:50%}.col-12{flex:0 0 100%;max-width:100%}.justify-content-center{justify-content:center}
  .pages{padding-top:30px;padding-bottom:48px}.content{max-width:100%;overflow-wrap:anywhere;word-break:break-word}
  .content img,.content video,.content iframe,.content embed,.content object{max-width:100%!important;height:auto}.content iframe,.content video{width:100%!important}
  .content table,.table{display:block;width:100%!important;max-width:100%;overflow-x:auto;border-collapse:collapse;-webkit-overflow-scrolling:touch}
  .form-group{margin-bottom:16px}.form-control{display:block;width:100%;min-height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:4px;background:#fff;color:var(--ink);line-height:1.5}
  textarea.form-control{min-height:120px;resize:vertical}.form-inline{display:flex;flex-wrap:wrap;gap:10px}.form-inline .form-group,.form-inline .form-control{width:100%;margin:0}
  .input-group{display:flex;width:100%}.input-group .form-control{min-width:0;flex:1 1 auto}.input-group-prepend,.input-group-addon,.input-group-text{display:flex;align-items:center;padding:0 12px;border:1px solid var(--line);background:var(--soft)}
  .btn{display:inline-flex;min-height:44px;align-items:center;justify-content:center;max-width:100%;padding:9px 16px;border:1px solid var(--line);background:#fff;color:var(--ink);text-align:center;touch-action:manipulation}
  .btn-info,.btn-primary,.btn-success{border-color:var(--accent);background:var(--accent);color:#fff}.btn-light,.btn-secondary{background:var(--soft)}
  .card,.figure{width:100%;max-width:100%;margin-bottom:18px;overflow:hidden;border:1px solid var(--line);background:#fff}.card-body,.card-header,.card-footer,.figure-caption{padding:14px 16px}
  .card-header{border-bottom:1px solid var(--line);font-weight:600}.card-footer{border-top:1px solid var(--line)}.card-img-top,.card-img-150,.card-img-200,.w-100{width:100%;max-width:100%;height:auto;object-fit:cover}
  .media{display:flex;min-width:0;gap:12px}.media-body{min-width:0;flex:1;overflow-wrap:anywhere}.codeimg{max-width:120px;height:auto}
  .pagination{padding-left:0;list-style:none}.page-link{display:grid;min-width:40px;min-height:40px;place-items:center;padding:4px 10px;border:1px solid var(--line)}.page-item.active .page-link{border-color:var(--accent);background:var(--accent);color:#fff}
  .modal{position:fixed;inset:0;z-index:1000;display:none;overflow:auto;padding:16px;background:rgba(0,0,0,.5)}.modal.show{display:block}.modal-dialog{width:100%;max-width:680px;margin:5vh auto}.modal-content{width:100%;overflow:hidden;background:#fff}
  .modal-header,.modal-body,.modal-footer{padding:16px}.modal-header{border-bottom:1px solid var(--line)}.modal-footer{display:flex;flex-wrap:wrap;gap:8px;border-top:1px solid var(--line)}
  .d-none{display:none!important}.d-block,.d-md-block{display:block!important}.d-md-none{display:none!important}.text-center{text-align:center}.text-right{text-align:right}.text-secondary{color:var(--muted)}.float-right{float:right}.rounded{border-radius:var(--radius)}.bg-light{background:var(--soft)}
  .mb-2{margin-bottom:8px}.mb-3{margin-bottom:16px}.mb-5{margin-bottom:48px}.mt-2{margin-top:8px}.mt-3{margin-top:16px}.mt-4{margin-top:24px}.my-4{margin-block:24px}.my-5{margin-block:48px}.pb-2{padding-bottom:8px}.pb-3{padding-bottom:16px}.pt-3{padding-top:16px}.p-3{padding:16px}.lh-2{line-height:2}.lh-3{line-height:2.2}
}
@media (min-width:561px) and (max-width:900px){.col-sm-6{flex:0 0 50%;max-width:50%}}
@media (max-width:560px){.container{width:calc(100% - 28px)}.col-6{flex:0 0 100%;max-width:100%}.media{align-items:flex-start}.form-inline .btn{width:100%}}

/* Mobile navigation, about pages and full footer navigation. */
@media (max-width:900px){
  .site-header{position:sticky;top:0}
  .primary-nav{max-height:calc(100dvh - 72px)}
  .nav-parent.open .nav-dropdown{display:block;width:100%;max-height:calc(100dvh - 170px);overflow:hidden}
  .nav-parent.open .dropdown-inner{width:100%;max-height:calc(100dvh - 190px);overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
  .nav-parent.open .dropdown-inner a{width:100%;min-height:46px;color:var(--muted);background:#fff}
  .site-footer{padding-top:52px}
  .footer-grid{grid-template-columns:1fr;gap:42px;padding-bottom:48px}
  .footer-brand{grid-column:auto}
  .footer-nav-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 22px}
  .footer-nav-title{min-height:0!important}
  .footer-subnav a{min-height:36px!important;padding-block:7px}
  .about-hub-grid,.culture-layout,.value-list{grid-template-columns:1fr}
  .about-hub-grid>a{border-right:0;border-bottom:1px solid var(--line)}
  .about-hub-grid>a:last-child{border-bottom:0}
  .culture-layout section{padding:30px 24px}.culture-layout section+section{border-left:0;border-top:1px solid var(--line)}
  .value-list section{padding:28px 24px}.value-list section+section{border-left:0;border-top:1px solid var(--line)}
  .values-statement{font-size:32px}
}
@media (max-width:560px){
  .footer-nav-grid{grid-template-columns:1fr}
  .footer-brand p{margin-top:18px}
  .about-hub-grid>a{padding:26px 22px}.about-hub-grid span{margin-bottom:18px}
  .about-detail .content-body{font-size:16px}.culture-lead{font-size:25px!important}.values-statement{font-size:28px}
}
.brand-logo{width:44px;height:44px;flex-basis:44px}
.footer-brand-logo{width:64px;height:64px}

/* Mobile-first final audit layer. Keep every page usable at 320-900 CSS pixels. */
@media (max-width:900px){
  html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:76px}
  body{min-width:320px;overflow-x:hidden;overflow-wrap:anywhere}
  body,button,input,select,textarea{font-family:inherit}
  a,button,input,select,textarea,[role="button"]{-webkit-tap-highlight-color:rgba(200,38,34,.14)}
  a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(200,38,34,.28);outline-offset:3px}
  .shell,.container{width:calc(100% - 28px);max-width:700px;margin-inline:auto}
  main,.pages,.content,.content-body,.swiper-container,.swiper-wrapper,.swiper-slide{max-width:100%}
  img,svg,canvas,video,iframe,embed,object{max-width:100%}
  pre,code{max-width:100%;overflow-x:auto;white-space:pre-wrap;overflow-wrap:anywhere}

  .site-header{padding-top:env(safe-area-inset-top);background:#fff}
  .header-bar{height:72px;gap:8px;padding-inline:max(0px,env(safe-area-inset-left)) max(0px,env(safe-area-inset-right))}
  .brand{flex:1 1 auto;max-width:calc(100% - 58px);gap:10px}
  .brand-logo{width:44px;height:44px;flex:0 0 44px}
  .brand-copy{max-width:100%}
  .brand-copy strong{font-size:clamp(16px,4.8vw,20px);letter-spacing:.03em}
  .brand-copy small{font-size:9px;letter-spacing:.09em}
  .header-tools{display:flex;flex:0 0 auto;align-items:center;margin-left:auto;margin-right:4px;font-size:12px}
  .header-tools a{display:block!important;min-height:44px;padding:0 6px;line-height:44px;white-space:nowrap}
  .header-tools .lang-separator,.header-tools[data-current-language="hk"] .lang-hk,.header-tools[data-current-language="cn"] .lang-cn{display:none!important}
  .nav-toggle{display:block;margin-left:auto;padding:8px}
  .primary-nav{position:fixed;top:calc(72px + env(safe-area-inset-top));right:0;bottom:0;left:0;max-height:none;padding-bottom:env(safe-area-inset-bottom);background:#fff}
  .primary-nav>ul{width:100%;max-width:700px;margin-inline:auto;padding:10px 16px 28px}
  .primary-nav li>a{min-height:50px;height:auto;padding:10px 12px;font-size:16px;line-height:1.5}
  .nav-parent.open .nav-dropdown{max-height:none}
  .nav-parent.open .dropdown-inner{max-height:none;padding:2px 14px 10px 24px;overflow:visible}
  .nav-parent.open .dropdown-inner a{min-height:46px;padding:10px 8px}

  .hero,.hero .swiper-container,.hero .swiper-slide{width:100%;overflow:hidden}
  .hero img{width:100%;height:auto;min-height:0;aspect-ratio:1456/624;object-fit:contain;object-position:center;background:#f7f6f4}
  .section{padding-block:clamp(48px,9vw,64px)}
  .section-head{max-width:100%;margin-bottom:30px;padding-inline:4px}
  .section-head h1,.section-head h2{font-size:clamp(27px,8vw,32px)}
  .section-head p{font-size:15px;line-height:1.8}
  .story-grid,.mission-grid,.catalog-layout,.product-detail,.contact-layout{grid-template-columns:minmax(0,1fr)}
  .story-grid{gap:38px}
  .story-media img{aspect-ratio:4/3}
  .story-copy h2{font-size:clamp(28px,8vw,32px)}
  .metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
  .metric{min-width:0}.metric strong{font-size:24px}.metric span{display:block;line-height:1.5}
  .product-showcase,.product-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .product-card{min-width:0}
  .product-card img{padding:clamp(14px,4vw,22px)}
  .product-card-body{padding:18px}
  .product-card h3{font-size:17px;overflow-wrap:anywhere}
  .mission-grid{gap:24px}.mission-grid h2{font-size:30px}
  .channels{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .channel{min-width:0;min-height:132px;padding:22px 18px}

  .page-banner{height:clamp(210px,48vw,260px);background-position:center}
  .page-banner-inner{padding-bottom:34px}
  .page-banner h1{font-size:clamp(30px,8vw,36px)}
  .catalog-layout{gap:28px}
  .category-panel{position:static;top:auto;width:100%;padding:16px;overflow:hidden}
  .category-panel h2{padding:2px 0 12px}
  .category-list{display:flex;gap:8px;margin:0 -2px;padding:12px 2px 4px;overflow-x:auto;scroll-snap-type:x proximity;overscroll-behavior-inline:contain;-webkit-overflow-scrolling:touch}
  .category-list a{flex:0 0 auto;min-height:44px;padding:9px 14px;border:1px solid var(--line);border-radius:var(--radius);scroll-snap-align:start;white-space:nowrap}
  .category-list a:after{display:none}
  .category-panel{padding:0 16px;border:0}
  .category-panel h2{display:none}
  .category-list{display:grid;gap:0;margin:0;padding:0;overflow:visible;scroll-snap-type:none}
  .category-list a{display:grid;grid-template-columns:44px minmax(0,1fr) 24px;align-items:center;min-height:72px;padding:0 4px;border:0;border-bottom:1px solid var(--line);border-radius:0;white-space:normal;color:var(--ink)}
  .category-list a:after{content:'›';display:block;text-align:right;color:#c8c8c8;font-size:38px;font-weight:300;line-height:1}
  .category-list a.active{color:var(--accent);border-bottom-color:var(--accent)}
  .category-list a.active:after{color:var(--accent)}
  .category-icon{display:block;color:#777;font:normal normal normal 24px/1 FontAwesome;text-align:left}
  .category-list a.active .category-icon{color:var(--accent)}
  .category-list a:nth-child(1) .category-icon:before{content:'\f183'}
  .category-list a:nth-child(2) .category-icon:before{content:'\f182'}
  .category-list a:nth-child(3) .category-icon:before{content:'\f21e'}
  .category-list a:nth-child(4) .category-icon:before{content:'\f2a2'}
  .category-list a:nth-child(5) .category-icon:before{content:'\f1ae'}
  .category-list a:nth-child(6) .category-icon:before{content:'\f0fa'}
  .category-list a:nth-child(7) .category-icon:before{content:'\f0c4'}
  .category-list a:nth-child(8) .category-icon:before{content:'\f0c3'}
  .category-list a:nth-child(9) .category-icon:before{content:'\f06c'}
  .category-list a:nth-child(10) .category-icon:before{content:'\f043'}
  .category-list a:nth-child(11) .category-icon:before{content:'\f0f4'}
  .category-list a:nth-child(12) .category-icon:before{content:'\f186'}
  .category-list a:nth-child(13) .category-icon:before{content:'\f24e'}
  .catalog-main-head{margin-bottom:22px}.catalog-main-head h1{font-size:24px}
  .product-detail{gap:30px}.product-info h1{font-size:clamp(27px,8vw,32px)}
  .product-gallery img{padding:clamp(16px,5vw,28px)}
  .buy-link{min-height:48px;align-items:center;justify-content:center;text-align:center;touch-action:manipulation}
  .content-body{width:100%;margin-top:40px;font-size:16px;line-height:1.9}
  .content-body>*{max-width:100%}
  .content-body img{height:auto!important;margin-block:18px}
  .content-body iframe,.content-body video{width:100%!important;height:auto!important;aspect-ratio:16/9}
  .content-body table,.content table,.table{display:block;width:100%!important;max-width:100%;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch}
  .content-body td,.content-body th,.table td,.table th{min-width:110px;padding:10px;white-space:normal;overflow-wrap:anywhere}

  .pages{padding-top:26px;padding-bottom:48px}
  .pages>ul{margin:0;padding:0;list-style:none}
  .pages>ul>li{padding:12px 0;line-height:1.7}
  .pages>ul>li>a{display:flex;min-width:0;flex-wrap:wrap;gap:4px 8px;align-items:center}
  .pages>ul .float-right{width:100%;margin-left:0;color:var(--muted);font-size:13px}
  .row{min-width:0}
  [class*="col-"]{min-width:0}
  .d-none{display:none!important}.d-block{display:block!important}.d-inline{display:inline!important}
  .d-block.d-md-none{display:block!important}.d-inline.d-md-none{display:inline!important}
  .d-none.d-md-block,.d-none.d-md-inline{display:none!important}
  .media{width:100%;align-items:flex-start}.media>img{flex:0 0 auto;width:32px;height:32px;object-fit:cover;border-radius:50%}
  .media-body{max-width:100%}.media-body p{overflow-wrap:anywhere}
  .badge{display:inline-block;max-width:100%;padding:3px 7px;border-radius:4px;line-height:1.4;white-space:normal}

  form{max-width:100%}
  label{display:block;margin-bottom:6px}
  .form-control,input:not([type="checkbox"]):not([type="radio"]),select,textarea{width:100%;max-width:100%;min-height:46px;font-size:16px}
  textarea,.form-control[type="textarea"]{min-height:128px}
  .form-group{min-width:0}
  .form-group:last-child{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
  .form-inline{display:flex;flex-wrap:wrap;gap:10px}.form-inline>*{width:100%;margin:0!important}
  .input-group,.form_date{width:100%!important;max-width:100%!important}
  .btn,.buy-link{max-width:100%;padding:11px 18px;border-radius:4px;line-height:1.4}
  .btn-group{display:block;width:100%}.btn-group>.btn{width:100%}
  .dropdown-menu{display:none;width:100%;margin:0 0 18px;padding:6px;border:1px solid var(--line);background:#fff;box-shadow:0 12px 30px rgba(76,45,37,.12)}
  .dropdown-menu.show{display:block}.dropdown-item{display:block;min-height:44px;padding:10px 12px}.dropdown-divider{height:1px;background:var(--line)}
  .list-group{display:grid}.list-group-item{min-height:44px;padding:10px 12px;border-bottom:1px solid var(--line)}
  .codeimg,#codeimg{width:auto!important;max-width:120px;height:40px!important;object-fit:contain}
  .pagination{display:flex;max-width:100%;flex-wrap:wrap;gap:6px}.pagination a,.pagination span,.page-link{min-width:40px;min-height:40px;height:auto;padding:7px 10px}
  .modal{padding:max(14px,env(safe-area-inset-top)) 14px max(14px,env(safe-area-inset-bottom))}
  .modal-dialog{max-width:100%;margin:3vh auto}.modal-content{max-width:100%}

  .contact-content-section{min-height:0}.contact-layout{gap:20px}
  .contact-intro{padding:30px 24px}.contact-intro h2{font-size:32px}
  .contact-card{grid-template-columns:minmax(0,1fr) 140px;gap:22px;padding:34px 28px;border-radius:36px 0 36px 0}
  .contact-card>h2{font-size:26px}.contact-list>div{grid-template-columns:82px minmax(0,1fr);gap:12px}
  .contact-qr img{width:132px;height:132px}
  .site-footer{padding-top:48px;padding-bottom:env(safe-area-inset-bottom)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:34px;padding-bottom:42px}
  .footer-brand{grid-template-columns:64px minmax(0,1fr);gap:14px}.footer-brand-logo{width:64px;height:64px}
  .footer-brand p{grid-column:2;max-width:none;margin-top:6px;line-height:1.8}
  .footer-nav-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 18px}
  .footer-nav-column,.footer-contact{min-width:0}.footer-subnav a,.footer-subnav span,.footer-contact a,.footer-contact p{overflow-wrap:anywhere}
  .footer-nav-column[data-footer-name="產品系列"]{grid-column:1/-1}
  .footer-nav-column[data-footer-name="產品系列"] .footer-subnav{grid-template-columns:repeat(2,minmax(0,1fr));gap:2px 18px}
  .footer-bottom{display:block;padding-block:18px}.footer-bottom span{display:block}
}

@media (max-width:560px){
  .shell,.container{width:calc(100% - 24px)}
  .brand{max-width:calc(100% - 52px)}
  .hero img{aspect-ratio:1456/624}
  .metrics{grid-template-columns:minmax(0,1fr)}
  .product-showcase,.product-grid,.channels{grid-template-columns:minmax(0,1fr)}
  .product-card-body{padding:18px}
  .channel{min-height:118px}
  .contact-card{grid-template-columns:minmax(0,1fr);padding:28px 20px;border-radius:24px 0 24px 0}
  .contact-card>h2{font-size:23px}.contact-list>div{grid-template-columns:72px minmax(0,1fr);gap:10px}
  .contact-qr{margin-top:24px}.contact-qr img{width:min(180px,60vw);height:auto;aspect-ratio:1}
  .footer-nav-grid{grid-template-columns:minmax(0,1fr)}
  .footer-nav-column[data-footer-name="產品系列"] .footer-subnav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .form-group:last-child>.btn,.form-group:last-child>button{width:100%}
  .modal-footer .btn{flex:1 1 auto}
}

@media (hover:none) and (pointer:coarse){
  .product-card:hover,.channel:hover,.purchase-channels a.channel:hover{transform:none;box-shadow:none}
  .primary-nav li:hover>a{color:inherit}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}

@media (max-width:900px){
  .brand-logo{width:90px;height:35px;flex:0 0 90px;border-radius:0;object-fit:contain}
  .footer-brand{grid-template-columns:120px minmax(0,1fr)}
  .footer-brand-logo{width:120px;height:46px;border-radius:0;object-fit:contain}
  .product-content{margin-top:20px;font-size:15px}
  .product-content td{padding:16px 8px!important}
  .product-content td:first-child{width:88px!important;padding-left:0!important;white-space:normal}
}

@media (max-width:900px){
  .page-banner{background-image:linear-gradient(90deg,rgba(35,25,22,.74),rgba(35,25,22,.12)),url('../images/brand/story-01-900.webp')}
  .page-banner.product-banner{background-image:linear-gradient(90deg,rgba(35,25,22,.72),rgba(35,25,22,.10)),url('../images/brand/event-900.webp')}
  .page-banner.contact-banner{background-image:linear-gradient(90deg,rgba(35,25,22,.72),rgba(35,25,22,.10)),url('../images/brand/contact-900.webp')}
  .contact-content-section{background-image:none;background-color:#fff}
  .purchase-view .page-banner{background-image:linear-gradient(90deg,rgba(20,45,70,.58),rgba(20,45,70,.16)),url('../images/brand/purchase-city-900.webp');background-position:center 48%}
  .purchase-view .about-detail .content-body{grid-template-columns:repeat(2,minmax(0,1fr))}
  .purchase-view .about-detail .content-body>h2{padding:0 12px 28px;font-size:28px}
  .purchase-view .about-detail .content-body>p{min-height:96px;padding:20px 12px}
  .purchase-view .about-detail .content-body>p:nth-of-type(odd){border-left:0}
  .purchase-view .about-detail .content-body>p:nth-of-type(even){border-left:1px solid var(--line)}
  .purchase-view .about-detail .content-body>p:nth-of-type(n+3){border-top:1px solid var(--line)}
}