/* KERNEX 2.1 — compact composition from the supplied reference. */
.px-site{--px-blue:#009df3;--px-ink:#061928}.px-shell{width:min(1280px,calc(100% - 64px))}.px-section{padding:34px 0}.px-header{background:#031522}.px-header-inner{height:62px}.px-brand img{width:150px;height:38px}.px-nav{margin-inline:auto;gap:32px}.px-nav a{font-size:12px}.px-buy{display:inline-flex;min-height:36px;padding:9px 22px}.px-home h1{font-size:clamp(38px,4.5vw,66px);letter-spacing:-.045em}.px-home h2{font-size:clamp(22px,2.25vw,32px);letter-spacing:-.04em;line-height:1.15}.px-home h2 span{color:#0578bb}.px-kicker{font-size:10px!important;margin-bottom:9px;letter-spacing:.09em;color:#078bd0}.px-lead{font-size:14px;line-height:1.65}.px-muted{font-size:12px;line-height:1.6}.px-button{min-height:38px;font-size:10px;padding:10px 16px;gap:14px;border-radius:2px}.px-link{min-height:34px;font-size:10px;gap:12px}.px-heading{margin:0;display:flex;flex-direction:column;align-items:start;justify-content:center;gap:14px}.px-heading .px-muted,.px-heading .px-lead{margin:0}.px-heading>.px-link{border:1px solid #9baebd;padding:8px 14px;font-size:9px}.px-hero{position:relative;background:#041421}.px-hero-grid{min-height:410px;display:flex;position:static}.px-hero-copy{position:relative;z-index:2;width:46%;padding:50px 0}.px-hero-copy .px-kicker{color:#53c7ff}.px-hero .px-lead{font-size:14px;max-width:365px;margin:20px 0 24px;color:#dae5ed}.px-hero-art{position:absolute;inset:0;margin:0;display:block}.px-hero-art img{width:100%;height:100%;object-fit:cover;max-height:none}.px-hero-art:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#02111de8 0%,#03142080 33%,transparent 64%)}.px-art-caption,.px-hero-foot{display:none}.px-hero h1{color:#fff}.px-hero h1 span{color:#27a9ed}.px-system{background:#f5f7f8;padding:24px 0}.px-system>.px-shell{display:grid;grid-template-columns:29% 1fr;gap:0 24px;align-items:center}.px-system .px-heading{grid-row:span 2}.px-system .px-heading .px-lead{font-size:12px}.px-system small{display:none}.px-map{background:transparent}.px-map>img{aspect-ratio:3/1;object-fit:contain}.px-hotspot{gap:3px;font-size:8px}.px-hotspot i{width:15px;height:15px;font-size:10px;box-shadow:none}.px-hotspot span{background:#052239;color:#fff;padding:4px 8px;border-radius:2px}.px-surface-list{justify-content:center;margin:0;gap:13px}.px-surface-list a{font-size:8px;min-height:28px;gap:4px}.px-solutions{background:#021726;color:white}.px-solutions>.px-shell,#products>.px-shell,#why>.px-shell,#guides>.px-shell,.px-future>.px-shell{display:grid;grid-template-columns:27% 1fr;gap:32px;align-items:center}.px-solutions .px-muted,.px-why .px-muted{color:#c6d5e1}.px-solutions-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.px-solution{border:1px solid #526271;border-radius:5px;overflow:hidden;min-height:208px;padding:100px 13px 18px;position:relative;background:#071e2c}.px-solution:before{content:'';position:absolute;inset:0;background-image:linear-gradient(0deg,#00101e 0%,#00101e05 90%),url('assets/reference-details.png');background-size:100% 100%,500% 100%;background-position:center,var(--pos) center;z-index:0}.px-photo-exterior{--pos:0%}.px-photo-interior{--pos:25%}.px-photo-glass{--pos:50%}.px-photo-wheel{--pos:75%}.px-photo-light{--pos:100%}.px-solution>*{position:relative;z-index:1}.px-solution-number{display:none}.px-solution h3{font-size:13px;margin:12px 0 8px;color:white}.px-solution p{font-size:10px;line-height:1.5;color:#cdd6dd;margin:0}.px-solution .px-round-arrow{width:auto;height:auto;border:0;right:10px;bottom:6px;font-size:13px}.px-solution:hover{transform:translateY(-3px);border-color:#06aaff;background:#071e2c}.px-solution:last-child{grid-column:auto}#products{background:#f6f9fb}.px-products{gap:16px;grid-template-columns:repeat(4,minmax(0,1fr))}.px-packshot{aspect-ratio:1/1.03;background:#eff4f7;border-radius:4px}.px-packshot img{width:100%;height:100%;object-fit:contain;padding:10px}.px-product h3{font-size:12px;margin:12px 0 6px;line-height:1.35}.px-product-desc{font-size:10px;line-height:1.45;min-height:40px}.px-product-desc p{margin:0}.px-product .px-link{font-size:9px;min-height:27px;padding:4px 0;color:#007fbe;border:0;gap:8px}.px-code{font-size:8px;left:8px;top:8px}.px-soon{font-size:7px;padding:3px 5px;left:6px;bottom:6px}.px-dilution{font-size:9px;margin:5px 0}.px-product .price{font-size:13px}.px-why{background:#031827;color:white}.px-principles{margin:0;gap:20px;grid-template-columns:repeat(4,1fr)}.px-principles article{border-left:1px solid #274252;border-top:0;padding:8px 0 8px 18px}.px-principles article>span{font-size:23px;color:#26a2e7}.px-principles h3{font-size:12px;margin:14px 0 9px}.px-principles p{font-size:11px;line-height:1.55;color:#c4d2db}.px-guides{gap:16px;grid-template-columns:repeat(3,minmax(0,1fr))}.px-guide{background:#fff;border-radius:4px;overflow:hidden}.px-guide-image{aspect-ratio:2.1}.px-guide-image img{width:100%;height:100%;object-fit:contain;background:#edf3f6}.px-guide>.px-kicker{font-size:8px!important;margin:12px 12px 4px}.px-guide h3{font-size:13px;line-height:1.45;margin:0 12px}.px-guide>.px-link{margin:0 12px;font-size:9px;border:0}.px-calculator{background:#021c31;color:white;padding:25px 0}.px-calc-grid{grid-template-columns:27% 1fr;gap:32px;align-items:center}.px-calculator .px-lead{font-size:12px;margin:12px 0}.px-calculator .px-muted{font-size:10px;color:#bfd2e0}.px-calculator .px-link{font-size:9px}.px-calc{padding:18px;background:#052b49;border:1px solid #1c4a6a;display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:9px 20px;align-items:center}.px-calc>label{grid-column:1;font-size:9px;color:#c6dae7}.px-input{grid-column:1;grid-row:2;background:white;color:#08243a}.px-input input{font-size:18px;padding:9px;width:100%;color:#08243a}.px-input span{font-size:10px}.px-presets{grid-column:1;grid-row:3;gap:4px}.px-presets button{font-size:9px;padding:5px 8px;background:#0a385a;border:1px solid #2d5570;color:white}.px-ratio{grid-column:2;grid-row:1/3;margin:0;padding:0;border:0;display:flex;flex-direction:column;gap:10px;align-items:start}.px-ratio span{font-size:9px}.px-ratio strong{font-size:21px}.px-calc-result{grid-column:3;grid-row:1/3;margin:0;gap:10px}.px-calc-result output{font-size:26px;color:#fff}.px-calc-result span{font-size:9px;color:#cbdce7}.px-calc-result b{font-size:16px;color:#24b1ff}.px-calc>.px-button{grid-column:3;grid-row:3;min-height:32px;padding:6px}.px-calc-note{grid-column:1/-1;font-size:9px;margin:0;color:#9db9ca}.px-future{background:#031827;color:white;padding:20px 0;border-top:3px solid white}.px-future h2{font-size:19px}.px-products-three{grid-template-columns:repeat(3,1fr)}.px-future .px-product{display:grid;grid-template-columns:30% 1fr;gap:4px 10px;border:1px solid #2b4152;border-radius:3px;padding:8px}.px-future .px-packshot{grid-row:span 3;aspect-ratio:1/1.5;background:#0c2639}.px-future .px-packshot img{padding:0}.px-future .px-product h3{font-size:10px;margin:0}.px-future .px-product-desc{font-size:9px;min-height:0}.px-future .px-code,.px-future .px-soon{display:none}.px-future .px-product .px-link{font-size:8px}.px-future .px-product .px-link:before{content:'COMING SOON';color:#5ebff3;font-size:7px}.px-future .px-product .px-link{flex-wrap:wrap}.px-story{padding:24px 0;background:#eef4f7}.px-story-grid{grid-template-columns:30% 1fr;gap:32px}.px-story-emblem{grid-column:2;grid-row:1;position:relative;aspect-ratio:4.8;padding:0;overflow:hidden;display:block}.px-story-emblem img{max-width:none;width:100%;height:100%;object-fit:cover}.px-story-emblem span{position:absolute;left:24px;bottom:14px;font-size:14px;color:white;letter-spacing:.1em}.px-story-grid>div{grid-column:1;grid-row:1}.px-story h2{font-size:23px}.px-story .px-lead{font-size:12px;margin:12px 0}.px-cta{padding:20px 0;background:#001422;overflow:hidden}.px-cta-grid{grid-template-columns:1fr 1.1fr;gap:24px}.px-cta h2{font-size:25px}.px-cta .px-kicker{display:none}.px-cta .px-lead{font-size:12px;margin:8px 0}.px-cta-grid>img{max-height:140px;width:100%;object-fit:cover;object-position:right 65%}.px-footer{padding:28px 0 0;background:#031421;border-top:3px solid white}.px-footer-grid{gap:34px;grid-template-columns:1.4fr 1fr 1fr 1fr}.px-footer-logo{width:140px}.px-footer h2{font-size:11px;margin:0 0 12px}.px-footer nav{gap:4px}.px-footer nav a,.px-footer p{font-size:11px;line-height:1.6}.px-footer-bottom{padding:16px 0 24px;margin-top:22px;font-size:9px}.px-pagination{grid-column:1/-1;display:flex;gap:16px}
@media(max-width:1000px){.px-shell{width:calc(100% - 40px)}.px-nav{gap:18px}.px-buy{display:none}.px-solutions>.px-shell,#products>.px-shell,#why>.px-shell,#guides>.px-shell,.px-future>.px-shell{grid-template-columns:24% 1fr;gap:20px}.px-solution{padding:75px 8px 15px;min-height:185px}.px-solution h3{font-size:11px}.px-solution p{font-size:9px}.px-solutions-grid{gap:7px}.px-calc-grid{gap:20px}.px-calc{gap:10px;padding:14px}.px-calc-result output{font-size:22px}.px-hero-grid{min-height:370px}.px-hero-copy{width:50%}.px-hero .px-lead{max-width:320px}}
@media(max-width:760px){.px-shell{width:calc(100% - 32px)}.px-header-inner{height:58px}.px-brand img{width:120px}.px-header .px-mobile{max-height:calc(100dvh - 58px)}.px-section{padding:30px 0}.px-home h1{font-size:39px}.px-home h2{font-size:25px}.px-hero-grid{min-height:590px;align-items:flex-start}.px-hero-copy{width:100%;padding:34px 0 260px}.px-hero .px-lead{font-size:13px;max-width:310px;margin:16px 0 20px}.px-hero-art img{object-fit:cover;object-position:66% bottom;height:310px;position:absolute;bottom:0}.px-hero-art:after{background:linear-gradient(#02111d 0%,#02111d 38%,transparent 75%)}.px-system>.px-shell{display:flex;flex-direction:column;gap:14px;align-items:stretch}.px-map>img{aspect-ratio:2.4}.px-hotspot i{width:18px;height:18px}.px-hotspot span{display:none}.px-surface-list{display:grid;grid-template-columns:repeat(4,1fr);gap:4px 12px}.px-surface-list a{font-size:9px;min-height:32px}.px-solutions>.px-shell,#products>.px-shell,#why>.px-shell,#guides>.px-shell,.px-future>.px-shell{grid-template-columns:1fr;gap:22px}.px-heading{gap:12px}.px-solutions-grid{display:grid;grid-template-columns:repeat(5,150px);gap:10px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x proximity}.px-solution{min-height:205px;padding:110px 12px 18px;scroll-snap-align:start}.px-solution:last-child{grid-column:auto;min-height:205px}.px-solution h3{font-size:13px;margin:8px 0}.px-solution p{font-size:10px}.px-products{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 14px}.px-product h3{font-size:13px}.px-product-desc{font-size:11px}.px-packshot{aspect-ratio:1/1.1}.px-principles{grid-template-columns:1fr 1fr;gap:22px}.px-principles h3{font-size:13px}.px-guides{grid-template-columns:1fr;gap:16px}.px-guide{grid-template-columns:115px 1fr;gap:0 12px;display:grid}.px-guide-image{aspect-ratio:1;grid-row:span 3}.px-guide>.px-kicker{margin:10px 8px 4px 0}.px-guide h3{font-size:14px;margin:0 8px 0 0}.px-guide>.px-link{margin:0}.px-calc-grid{grid-template-columns:1fr;gap:22px}.px-calc{grid-template-columns:1fr 1fr;padding:18px;gap:14px}.px-input{grid-column:1;grid-row:2}.px-ratio{grid-column:2;grid-row:1/3}.px-presets{grid-column:1/-1;grid-row:3}.px-calc-result{grid-column:1/-1;grid-row:4;justify-content:center;padding:15px 0;border-top:1px solid #2b4e65}.px-calc-result output{font-size:36px}.px-calc-result span{font-size:11px}.px-calc>.px-button{grid-column:1/-1;grid-row:5;min-height:42px}.px-calc-note{grid-row:6}.px-future .px-products-three{grid-template-columns:1fr;gap:12px}.px-future .px-product{grid-template-columns:85px 1fr;padding:10px;gap:0 15px}.px-future .px-packshot{aspect-ratio:1}.px-future .px-product h3{font-size:13px}.px-future .px-product-desc{font-size:11px}.px-future .px-product .px-link{font-size:9px}.px-story-grid{display:flex;flex-direction:column-reverse;gap:18px}.px-story-emblem{aspect-ratio:2.6;width:100%}.px-story-emblem span{font-size:10px;left:14px}.px-story .px-lead{font-size:13px}.px-cta-grid{grid-template-columns:1fr;gap:16px}.px-cta-grid>img{margin:0;max-width:100%;max-height:190px;object-position:right center}.px-cta h2{font-size:25px}.px-footer-grid{grid-template-columns:1fr 1fr;gap:24px}.px-footer nav a{min-height:32px;font-size:11px}.px-footer-bottom{padding-bottom:75px}.px-site .px-hotspot{width:38px;height:38px}}

#guides .px-guide-image{background-image:url('assets/reference-details.png');background-size:500% 100%;background-position:var(--guide-pos,0%) center}#guides .px-guide-image img{opacity:0}.px-guide-wash{--guide-pos:0%}.px-guide-glass{--guide-pos:50%}.px-guide-tire{--guide-pos:75%}
@media(min-width:761px){.px-home #surfaces .px-heading h2{font-size:clamp(24px,2.4vw,34px)}}

/* 2.1.1: mobile hero follows content; all five solutions fit the viewport. */
@media(max-width:760px){
 .px-hero .px-hero-grid{display:flex;flex-direction:column;align-items:stretch;width:100%;min-height:0;height:auto;gap:0}
 .px-hero .px-hero-copy{width:calc(100% - 32px);margin-inline:auto;padding:30px 0 22px}
 .px-hero .px-hero-art{position:relative;inset:auto;align-self:auto;display:block;width:100%;height:auto;min-height:0;max-height:none;aspect-ratio:1.9;margin:0;flex:none;overflow:hidden}
 .px-hero .px-hero-art img{position:static;display:block;width:100%;height:100%;max-height:none;object-fit:cover;object-position:right center}
 .px-hero .px-hero-art:after{background:linear-gradient(180deg,#04142155,transparent 28%)}
 .px-solutions .px-solutions-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:5px;width:100%;min-width:0;overflow:visible;padding:0;scroll-snap-type:none}
 .px-solutions .px-solution,.px-solutions .px-solution:last-child{grid-column:auto;min-width:0;min-height:110px;padding:72px 3px 8px;display:flex;align-items:flex-end;justify-content:center;border-radius:4px;scroll-snap-align:none}
 .px-solutions .px-solution h3{font-size:clamp(8px,2.35vw,11px);line-height:1.3;letter-spacing:0;text-align:center;white-space:normal;overflow-wrap:normal;margin:0;min-height:2.6em;display:flex;align-items:center;justify-content:center}
 .px-solutions .px-solution p,.px-solutions .px-solution .px-round-arrow{display:none}
 .px-solutions .px-solution:before{background-image:linear-gradient(0deg,#00101e 0%,#00101eb0 30%,transparent 70%),url('assets/reference-details.png')}
}
/* 2.2: direct checkout and four-column mobile footer. */
.woocommerce div.product form.cart:not(.variations_form){display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.woocommerce div.product form.cart .quantity{margin:0 4px 0 0}
.woocommerce div.product form.cart .kx-buy-now{background:#031d30;color:#fff;margin:0;float:none}
.woocommerce div.product form.cart .kx-buy-now:hover{background:#006da7}
.woocommerce div.product .woocommerce-variation-add-to-cart{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
@media(max-width:760px){
 .px-footer .px-footer-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;align-items:start}
 .px-footer .px-footer-grid>div{min-width:0}
 .px-footer .px-footer-logo{width:100%;max-width:95px;height:auto}
 .px-footer .px-footer-grid h2{font-size:10px;letter-spacing:0;line-height:1.4;margin-bottom:12px}
 .px-footer .px-footer-grid p,.px-footer .px-footer-grid nav a{font-size:10px;line-height:1.5;overflow-wrap:anywhere}
 .px-footer .px-footer-grid .px-kicker{font-size:8px!important;letter-spacing:0}
 .px-footer .px-footer-grid nav{gap:4px}
 .px-footer .px-footer-grid nav a{min-height:32px}
 .woocommerce div.product form.cart:not(.variations_form),.woocommerce div.product .woocommerce-variation-add-to-cart{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px}
 .woocommerce div.product form.cart .quantity{grid-column:1/-1;margin:0}
 .woocommerce div.product form.cart .single_add_to_cart_button,.woocommerce div.product form.cart .kx-buy-now{width:100%;min-height:46px;padding:12px 6px;font-size:12px;line-height:1.4;margin:0;float:none;white-space:normal}
}
/* 2.3 Vietnamese catalog and product-page purchase support. */
.kx-cart-link{position:relative}.kx-cart-count{position:absolute;top:0;right:-2px;min-width:18px;height:18px;padding:0 4px;background:#009df3;color:white;border-radius:20px;font:700 10px/18px Arial;text-align:center}.kx-cart-count[hidden]{display:none}
.kx-together,.kx-offer{border:1px solid #e0e5eb;border-radius:16px;padding:22px;margin:22px 0;background:#fff}.kx-together>h2{font-size:20px;margin:6px 0 18px}.kx-addon{display:grid;grid-template-columns:68px minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px;border:1px solid #e0e5eb;border-radius:12px;margin-top:12px}.kx-addon img{width:68px;height:80px;object-fit:contain;border-radius:8px}.kx-addon h3{font-size:14px;line-height:1.45;margin:0 0 8px}.woocommerce .kx-addon .price{font-size:14px!important;margin:0}.woocommerce .kx-addon .button{border-radius:30px;font-size:12px;white-space:nowrap;padding:12px;background:#082439;color:white}.kx-offer{background:#f5f7fa;font-size:13px}.kx-offer progress{width:100%;height:10px;accent-color:#009df3}.kx-offer small{display:block;margin-top:8px;color:#627386;font-size:11px}.kx-service-grid{clear:both;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin:28px 0 42px}.kx-service-grid>a{display:flex;align-items:center;gap:14px;border:1px solid #e0e5eb;border-radius:14px;padding:22px 16px}.kx-service-grid>a>span{font-size:26px;color:#008dd5}.kx-service-grid h3{font-size:14px;margin:0 0 8px}.kx-service-grid p{font-size:12px;line-height:1.5;margin:0;color:#667887}
@media(max-width:760px){.kx-together,.kx-offer{padding:16px;border-radius:12px}.kx-addon{grid-template-columns:50px minmax(0,1fr) auto;gap:9px;padding:10px}.kx-addon img{width:50px;height:66px}.kx-addon h3{font-size:12px}.woocommerce .kx-addon .price{font-size:12px!important}.woocommerce .kx-addon .button{font-size:10px;padding:10px}.kx-service-grid{grid-template-columns:1fr 1fr;gap:10px}.kx-service-grid>a{padding:14px 10px;gap:9px}.kx-service-grid h3{font-size:12px}.kx-service-grid p{font-size:11px}.kx-service-grid>a>span{font-size:20px}}