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@media(max-width:1200px){.head-row{gap:18px}.main-nav{gap:18px}.brand img{width:85px}.brand>span{font-size:22px}.brand small{font-size:8px}.header-phone{font-size:16px}.hero{gap:30px}.hero-actions{gap:20px}.hero-facts{gap:16px}.hero-facts>div{padding-right:16px}.hero-visual{height:420px}.catalog-layout{grid-template-columns:200px 1fr;gap:24px}.product-grid{gap:14px}.product-card{padding:16px}.category-card{padding:22px}.category-card h3{font-size:19px}.product-top,.details-grid{gap:40px}.product-summary h1{font-size:34px}.request-layout{gap:50px}}
@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.main-nav{font-size:12px;gap:14px}.header-phone{display:none}.main-nav{margin-left:auto}.hero{grid-template-columns:1fr 1fr;gap:25px;padding-block:40px}.hero h1{font-size:40px}.hero-intro{font-size:14px}.hero-actions{align-items:flex-start;flex-direction:column;gap:16px}.hero-visual{height:390px}.hero-facts{gap:14px;margin-top:28px;flex-wrap:wrap}.hero-facts b{font-size:28px}.hero-facts>div{border:0;padding:0;gap:8px}.hero-facts span{font-size:9px}.category-grid{grid-template-columns:repeat(2,1fr)}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-content .product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-inner{gap:35px}.feature-inner h2{font-size:34px}.feature-image{height:300px}.help-band{padding:32px;align-items:flex-start;flex-direction:column;gap:25px}.footer-grid{gap:35px}.product-top{gap:30px}.product-gallery{min-height:400px}.product-gallery>img{height:380px}.product-summary h1{font-size:29px}.key-specs{gap:10px}.key-specs>div{padding:0}.key-specs dd{font-size:17px}.quote-box .text-link{margin-left:0}.request-layout{gap:35px}.request-layout h1{font-size:36px}.request-form{padding:25px}.contact-cards b{font-size:24px}}
@media(max-width:700px){.wrap{width:calc(100% - 32px)}.topline .wrap{font-size:10px}.topline span{max-width:180px;line-height:1.3;padding-block:8px}.topline a{white-space:nowrap;font-size:9px}.head-row{padding-block:16px;position:relative;flex-wrap:wrap;gap:10px}.brand img{width:82px;height:36px}.brand>span{font-size:22px}.brand small{font-size:7px}.menu-toggle{display:flex;margin-left:auto}.main-nav{display:none;order:3;flex-basis:100%;flex-direction:column;align-items:stretch;font-size:15px;padding-block:10px}.main-nav.open{display:flex}.main-nav a{padding:10px 0;border-bottom:1px solid var(--line)}.search-row{padding-bottom:15px;gap:10px}.search{padding-left:10px;gap:8px;min-height:42px}.search input{font-size:12px}.search button{padding:6px 10px;font-size:12px}.request-link{font-size:0;width:40px;height:42px;justify-content:center;flex-shrink:0;background:#f0f6fb;border-radius:8px}.hero{grid-template-columns:1fr;padding-top:34px;padding-bottom:28px;gap:28px}.hero h1{font-size:43px}.hero .eyebrow{font-size:9px!important;margin-bottom:17px}.hero-intro{font-size:15px;max-width:450px}.hero-actions{flex-direction:row;gap:18px;align-items:center;margin-top:24px}.hero-actions .button{padding:12px 16px;font-size:12px;gap:12px;min-height:47px}.hero-actions .text-link{font-size:12px;gap:6px;white-space:nowrap}.hero-facts{justify-content:space-between;gap:12px;margin-top:29px}.hero-facts b{font-size:29px}.hero-facts>div{gap:8px}.hero-facts span{font-size:9px}.hero-visual{height:335px}.hero-visual>img{height:100%;width:94%;margin-top:10px}.hero-index{font-size:9px;top:17px;left:20px}.hero-caption{bottom:14px;left:14px;right:14px;padding:12px 15px}.hero-caption b{font-size:13px}.hero-orbit{width:285px;height:285px;top:15px}.section{padding-block:44px}.section-head{align-items:flex-start;flex-direction:column;gap:15px;margin-bottom:24px}.section-head h2{font-size:29px}.section-head .eyebrow{font-size:10px!important}.category-grid{gap:12px}.category-card{min-height:245px;padding:18px 14px;align-items:end}.category-number{top:15px;left:15px;font-size:10px}.category-card>img{width:94%;height:120px;max-height:none;top:16px;right:-8px}.category-card>div{padding-top:110px;max-width:100%;width:100%}.category-card p{font-size:9px}.category-card h3{font-size:16px;line-height:1.2;margin:7px 0 14px;min-height:3.6em;letter-spacing:-.03em}.category-count{font-size:10px;gap:10px}.category-count .icon{width:15px;height:15px}.feature-section{padding-block:35px}.feature-inner{grid-template-columns:1fr;gap:28px}.feature-image{height:260px}.feature-inner h2{font-size:34px}.feature-inner p:not(.eyebrow){font-size:14px}.product-grid{gap:12px}.product-card{padding:14px 12px;border-radius:11px}.card-image{aspect-ratio:1;margin-bottom:10px}.model-code{font-size:9px}.product-card h3{font-size:14px;line-height:1.35;min-height:5.4em;margin-bottom:12px}.card-specs{font-size:10px;min-height:4.4em}.card-specs>div{gap:6px}.card-specs dt{max-width:65%}.card-specs dd{white-space:normal}.card-bottom{padding-top:14px}.card-price{font-size:14px;white-space:nowrap;margin-bottom:12px}.card-bottom .button{padding:9px 10px;font-size:11px;min-height:40px;gap:6px}.card-bottom .icon{width:16px;height:16px}.help-band{margin-block:6px 44px;padding:28px 24px;border-radius:12px}.help-band h2{font-size:29px}.help-band p{font-size:13px}.breadcrumbs{padding-block:17px;font-size:10px;gap:7px}.catalog-heading{padding-block:16px 25px}.catalog-heading h1{font-size:33px}.catalog-heading p:not(.eyebrow){font-size:14px}.catalog-layout{grid-template-columns:1fr;gap:22px;padding-bottom:40px}.category-nav{display:flex;gap:8px;overflow:auto;flex-wrap:nowrap;padding-bottom:10px}.category-nav h2,.category-nav .aside-pdf{display:none}.category-nav>a{white-space:nowrap;font-size:11px;padding:9px 12px;border:1px solid var(--line);margin:0}.category-nav>a span{display:none}.filters{gap:12px;padding:15px}.filters label{min-width:calc(50% - 12px)}.filters label:first-child{flex-basis:100%}.filters .button{margin-top:2px}.reset{margin-left:8px}.product-top{grid-template-columns:1fr;gap:28px;padding-block:12px 40px}.product-gallery{min-height:330px}.product-gallery>img{height:320px}.product-gallery>span{font-size:8px;bottom:18px}.product-summary h1{font-size:33px}.product-lead{font-size:14px}.key-specs dd{font-size:18px}.quote-box .button{width:100%}.quote-box .text-link{margin-top:20px}.product-price{font-size:27px}.anchor-nav{gap:24px;font-size:12px;margin-bottom:30px;overflow:auto}.details-grid{grid-template-columns:1fr;gap:35px}.details-grid h2{font-size:26px}.spec-table{font-size:13px}.spec-table>div{gap:18px}.request-layout{grid-template-columns:1fr;gap:30px}.request-layout h1{font-size:35px}.request-form{padding:23px 20px}.request-product{margin-top:25px}.contact-cards{grid-template-columns:1fr;margin-block:30px 40px}.contact-cards b{font-size:25px}.contacts h1{font-size:38px}.prose h1{font-size:33px}.prose>p{font-size:14px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}.footer-grid h2{font-size:13px}.footer-grid a{font-size:12px}.footer-grid .footer-brand{font-size:34px}.footer-grid .footer-phone{font-size:20px}.legal{gap:18px;flex-direction:column;margin-top:28px;font-size:9px}footer{padding-top:35px}.empty{padding:40px 15px}.success-box{padding:28px 24px}.success-box h1{font-size:29px}}
@media(max-width:350px){.hero h1{font-size:36px}.hero-actions{gap:14px;flex-wrap:wrap}.hero-facts{gap:8px}.hero-facts b{font-size:25px}.hero-facts span{font-size:8px}.hero-facts>div{gap:5px}.hero-visual{height:295px}.brand img{width:69px}.brand>span{font-size:21px}.brand small{font-size:6px}.product-card{padding:12px 10px}.card-price{font-size:12px}.product-card h3{font-size:13px}.category-card h3{font-size:15px}.contact-cards b{font-size:22px}.key-specs{grid-template-columns:1fr 1fr;gap:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Fixed media geometry: intrinsic photo proportions never change the card rows. */
.card-image{display:block;position:relative;width:100%;flex:none;overflow:hidden}.card-image img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.category-card{min-height:292px}.category-card>img{width:54%;height:145px;top:12px;right:12px}.category-card>div{max-width:100%;padding-top:130px}.category-card h3{min-height:2.4em;max-width:100%;margin-bottom:14px}.footer-grid .footer-brand{font-size:40px}
@media(max-width:700px){.category-card{min-height:265px}.category-card>img{width:90%;height:115px;right:0;top:13px}.category-card>div{padding-top:115px}.category-card h3{min-height:3.6em}.footer-grid .footer-brand{font-size:34px}}

/* More space for actual equipment photos, with identical media areas per grid. */
.card-image{aspect-ratio:1;margin-bottom:18px}
.category-card{min-height:350px}
.category-card>img{width:72%;height:205px;top:10px;right:10px;object-fit:contain}
.category-card>div{padding-top:190px}
.hero-visual>img{object-fit:contain}
.search{position:relative;overflow:visible}
.search-dropdown{position:absolute;left:0;right:0;top:calc(100% + 8px);z-index:100;background:#fff;border:1px solid #d9e3eb;border-radius:18px;box-shadow:0 18px 45px #153c5624;max-height:min(650px,65dvh);overflow:auto;padding:12px;color:#162b3d}
.search-dropdown[hidden]{display:none}
.search-status{font-size:13px;line-height:1.5;padding:8px 10px;color:#526679}
.search-group-title{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#617889;padding:14px 10px 7px}
.search-options a{display:flex;align-items:center;gap:12px;padding:10px;border-radius:10px;min-height:44px;text-decoration:none;color:inherit}
.search-options a:hover,.search-options a[aria-selected=true]{background:#edf6fc;color:#125286}
.search-options img{width:52px;height:52px;object-fit:contain;flex:none;background:#fff;border-radius:7px}
.search-options b{display:block;font-size:14px;line-height:1.4;font-weight:600}
.search-options small{display:block;font-size:12px;color:#617889;margin-top:4px}
.search-all{display:block;text-align:center;padding:14px;margin:8px 0 0;border-top:1px solid #e5edf3;color:#1765a4;font-size:14px;font-weight:600}
.search-all[hidden]{display:none}
@media(max-width:700px){.category-card{min-height:310px}.category-card>img{width:96%;height:157px;right:2%;top:12px}.category-card>div{padding-top:153px}.card-image{aspect-ratio:.9}.search-dropdown{padding:8px}.search-options img{width:44px;height:44px}.search-options a{gap:8px;padding:9px 6px}.search-options b{font-size:13px}}

/* Keep mobile search suggestions clear of floating support controls. */
body:has(#site-search[aria-expanded="true"]) #baitai-support{visibility:hidden}

/* Owner-confirmed heating variants, 2026-11-03. */
.product-variants{margin:20px 0}.product-variants>span{display:block;font-size:13px;color:var(--muted);margin-bottom:10px}.product-variants>div{display:flex;flex-wrap:wrap;gap:10px}.product-variants a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border:1px solid #cbd8d8;border-radius:12px;color:inherit;text-decoration:none;font-size:14px;line-height:1.35}.product-variants a[aria-current=page]{background:#153f42;color:white;border-color:#153f42}.product-variants a:hover{box-shadow:0 3px 12px #123b421f}.product-variants a:focus-visible{outline:3px solid #2b878d;outline-offset:3px}

.bt-pickup-form{display:flex;gap:18px;align-items:end;margin:24px 0}.bt-pickup-form label{display:grid;gap:8px;flex:1;max-width:650px}.bt-pickup-form select{width:100%;min-height:50px;padding:12px;border:1px solid #bdd1d0;border-radius:14px;background:white;color:#173f47}.bt-pickup-map{height:auto;min-height:0}.bt-pickup-map iframe{display:block;width:100%;border:0;min-height:620px}.bt-pickup h2{font-size:clamp(28px,4vw,44px);line-height:1.2}.bt-pickup h3{margin-top:30px}@media(max-width:600px){.bt-pickup-form{align-items:stretch;flex-direction:column}.bt-pickup-form label{min-width:0}.bt-pickup-map{height:auto}}
.bt-articles-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:36px}.bt-article-card{display:flex;flex-direction:column;border:1px solid var(--line,#d8e4e4);border-radius:24px;overflow:hidden;background:#fff}.bt-article-card-image{display:block;background:#f0f5f4;padding:24px}.bt-article-card-image img{width:100%;height:230px;object-fit:contain}.bt-article-card>div{display:flex;flex:1;flex-direction:column;padding:24px;gap:12px}.bt-article-card h2{font-size:24px;line-height:1.3;margin:0}.bt-article-card h2 a{color:inherit;text-decoration:none}.bt-article-card p{margin:0}.bt-article-card .text-link{margin-top:auto;padding-top:12px}.bt-article-card time{color:#557376;font-size:14px}.bt-article{max-width:1000px;line-height:1.8}.bt-article h1{font-size:clamp(30px,4vw,52px)}.bt-article h2{font-size:clamp(24px,3vw,34px);margin:36px 0 16px}.bt-article-lead{font-size:clamp(18px,2vw,22px);line-height:1.65}.bt-article-cover{margin:32px 0}.bt-article-cover img{width:100%;height:380px;object-fit:contain;background:#eff5f4;border-radius:24px}.bt-article-product{border:1px solid #d5e3e2;border-radius:20px;padding:24px;margin:24px 0;display:flex;flex-wrap:wrap;align-items:center;gap:20px}.bt-article-product img{width:180px;height:150px;object-fit:contain}.bt-article table{width:100%;border-collapse:collapse;margin:24px 0}.bt-article th,.bt-article td{text-align:left;padding:14px;border-bottom:1px solid #d8e4e4;overflow-wrap:anywhere}.bt-article-order{background:#e9f3f0;padding:28px;border-radius:24px;margin-top:32px}.bt-article-order h2{margin-top:0}.bt-pickup{margin:32px auto 72px}.bt-pickup-head{display:flex;gap:28px;align-items:end;justify-content:space-between;margin-bottom:24px}.bt-pickup-head>div{max-width:700px}.bt-pickup-head h2{font-size:clamp(28px,4vw,44px);line-height:1.15;margin:10px 0}.bt-pickup-head label{display:grid;gap:8px;min-width:240px}.bt-pickup-head select{width:100%;min-height:48px;padding:12px;border:1px solid #c5d6d5;border-radius:14px;background:#fff;color:#193e43}.bt-pickup-map{width:100%;height:650px;min-height:560px;border:1px solid #d8e4e4;border-radius:22px;overflow:hidden;display:block;background:#f0f5f4}.bt-pickup-note{color:#456466;line-height:1.65;margin:20px 0}.bt-pickup-cities{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px 24px;margin-top:24px}.bt-pickup-cities a{padding:6px 0;text-underline-offset:4px;color:#214d55;overflow-wrap:anywhere}@media(max-width:1000px){.bt-articles-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bt-pickup-cities{grid-template-columns:repeat(3,minmax(0,1fr))}.bt-pickup-head{align-items:stretch;flex-direction:column}}@media(max-width:600px){.bt-articles-grid{grid-template-columns:1fr}.bt-article-cover img{height:250px}.bt-pickup-cities{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 14px}.bt-pickup-map{height:720px}.bt-article table{font-size:13px}.bt-article th,.bt-article td{padding:8px}.bt-article-product{padding:18px}.bt-article-order{padding:20px}}
.bt-article-model{display:flex;gap:24px;align-items:center;border:1px solid #d6e4e4;border-radius:20px;padding:24px;margin:24px 0}.bt-article-model img{width:180px;height:160px;object-fit:contain}.bt-article-facts dl>div{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:12px 0;border-bottom:1px solid #d6e4e4}.bt-article-facts dd{margin:0}.bt-article-table{overflow:auto}.bt-article details{padding:16px 0;border-bottom:1px solid #d6e4e4}.bt-article summary{cursor:pointer;font-weight:600}@media(max-width:600px){.bt-article-model{flex-direction:column;align-items:start}.bt-article-facts dl>div{grid-template-columns:1fr;gap:6px}}
.bt-article-table{max-width:100%;overflow:auto}.bt-article-table table{min-width:760px;overflow-wrap:normal}