:root{--ink:#181d22;--muted:#626c76;--line:#dce0e3;--paper:#f3f4f5;--red:#ce2028;--dark:#191d21;--max:1260px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:140px}body{margin:0;color:var(--ink);background:#fff;font:16px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}img,video{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--red);outline-offset:5px}h1,h2,h3,p,figure{margin:0}h1,h2,h3{line-height:1.3;letter-spacing:-.035em}h1{font-size:clamp(36px,4.8vw,68px);font-weight:750}h2{font-size:clamp(28px,3vw,42px);font-weight:700}h3{font-size:23px;font-weight:650}p{color:var(--muted)}.wrap{width:min(var(--max),calc(100% - 80px));margin-inline:auto}.section{padding-block:88px}.soft{background:var(--paper)}.dark{background:var(--dark);color:#fff}.dark p{color:#b7bfc6}.red{color:var(--red)}.kicker{font-size:14px;font-weight:700;letter-spacing:.12em;color:var(--red);margin-bottom:18px}.muted{color:var(--muted)}.note,figcaption{font-size:13px;line-height:1.8;color:var(--muted)}figcaption{padding:14px 0}.section-title{margin-bottom:36px;max-width:920px}.section-title p{margin-top:16px;font-size:17px;max-width:850px}.section-no{font-size:13px;letter-spacing:.14em;color:var(--red);display:block;margin-bottom:14px}.rule-title{border-left:4px solid var(--red);padding-left:22px}.button{display:inline-flex;justify-content:center;align-items:center;gap:32px;min-height:50px;padding:12px 26px;background:var(--red);border:1px solid var(--red);color:#fff;font-size:15px;font-weight:650;transition:background .2s}.button:hover{background:#ac1820}.button.outline{background:transparent;color:var(--ink);border-color:#aeb5bb}.button.outline:hover{background:#e8ebed}.text-link{display:inline-flex;gap:28px;align-items:center;color:var(--red);font-size:15px;font-weight:650;border-bottom:1px solid #e6afb2;padding-bottom:6px}.actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:28px}.skip{position:fixed;left:16px;top:-100px;z-index:100;background:white;padding:12px}.skip:focus{top:12px}.site-header{background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}.header-row{min-height:86px;display:flex;align-items:center;gap:34px}.brand{display:flex;align-items:center;gap:13px;flex:none}.brand-mark{width:36px;height:42px;border:3px solid var(--red);transform:skew(-12deg);position:relative}.brand-mark:after{content:"";position:absolute;left:6px;right:6px;top:17px;border-top:3px solid var(--red)}.brand strong{display:block;font-size:25px;line-height:1.2;letter-spacing:.06em}.brand small{display:block;font-size:10px;letter-spacing:.22em;color:var(--muted);margin-top:5px}.site-nav{display:flex;align-items:center;gap:26px;margin-left:auto;white-space:nowrap}.site-nav a{font-size:14px;position:relative;line-height:86px}.site-nav a:hover,.site-nav a[aria-current]{color:var(--red)}.site-nav a[aria-current]:after{content:"";position:absolute;bottom:19px;left:0;right:0;border-bottom:2px solid var(--red)}.header-contact{font-weight:650;font-size:14px;color:var(--red);white-space:nowrap;border-left:1px solid var(--line);padding-left:24px}.menu-button{display:none;background:none;border:1px solid var(--line);padding:6px 12px}.hero{text-align:center;background:linear-gradient(#fff 15%,#f3f4f5);padding-top:64px;overflow:hidden}.hero h1{letter-spacing:-.06em}.hero .lead{max-width:780px;margin:22px auto 0;font-size:19px}.hero 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button:first-child{padding-left:0}.product-panel{display:grid;grid-template-columns:1.2fr 1fr;gap:72px;align-items:center}.product-panel[hidden]{display:none}.product-panel figure{background:var(--paper)}.product-panel img{width:100%;aspect-ratio:3/2;object-fit:contain}.product-panel h3{font-size:32px;margin-bottom:18px}.product-panel .note{margin-top:15px}.spec-mini{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:26px 0;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.spec-mini div{min-width:0}.spec-mini dt{font-size:13px;color:var(--muted);margin-bottom:4px}.spec-mini dd{margin:0;font-size:16px}.feature-spread{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:center}.feature-spread.reverse{grid-template-columns:1fr 1.2fr}.feature-spread img{width:100%;object-fit:contain}.feature-copy h2{margin-bottom:24px}.feature-list{margin-top:24px}.feature-list>div{padding:20px 0;border-top:1px solid var(--line)}.feature-list h3{font-size:21px;margin-bottom:8px}.feature-list p{font-size:15px}.full-diagram{background:#fff}.full-diagram img{width:100%;max-height:650px;object-fit:contain}.steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);margin-top:22px}.steps>div{padding:24px 25px 4px 0}.steps b{color:var(--red);font-size:13px}.steps h3{font-size:20px;margin:12px 0}.steps p{font-size:14px}.component-key{display:grid;grid-template-columns:repeat(3,1fr);gap:0 32px}.component-key p{border-top:1px solid var(--line);padding:16px 0;font-size:14px}.component-key b{display:inline-block;color:var(--ink);margin-right:10px}.scenario-list{border-top:1px solid var(--line)}.scenario-row{display:grid;grid-template-columns:70px 1fr 1.1fr 40px;gap:28px;align-items:center;border-bottom:1px solid var(--line);padding:25px 0}.scenario-row>span{color:var(--red);font:15px/1.2 monospace}.scenario-row h3{font-size:23px}.scenario-row p{font-size:15px}.scenario-row:hover h3{color:var(--red)}.retrofit-block{display:grid;grid-template-columns:1.2fr 1fr;gap:56px;align-items:center}.retrofit-block .text-link{margin-top:24px}.brand-list{display:flex;flex-wrap:wrap;gap:14px 28px;margin:24px 0;color:var(--ink);font-size:20px;font-weight:650}.service-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #454a50;margin-top:40px}.service-grid>div{padding:26px 24px 0 0}.service-grid b{font:13px monospace;color:#fa7479}.service-grid h3{font-size:22px;margin:16px 0 12px}.service-grid p{font-size:14px}.service-foot{margin-top:28px;font-size:13px!important}.contact-ribbon{border-bottom:1px solid var(--line);padding:56px 0;background:var(--paper)}.contact-ribbon .wrap{display:flex;justify-content:space-between;gap:36px;align-items:center}.contact-ribbon h2{font-size:34px}.contact-ribbon p{margin-top:12px}.footer{padding:54px 0 20px;background:#fff}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px}.footer h3{font-size:16px;margin-bottom:20px}.footer p,.footer a:not(.brand){font-size:14px}.footer-links a{display:block;padding:5px 0}.footer .brand{margin-bottom:20px}.footer-phone{font-size:26px!important;font-weight:650;color:var(--red)}.legal{display:flex;flex-wrap:wrap;gap:14px 28px;border-top:1px solid var(--line);padding-top:22px;margin-top:40px;font-size:12px;color:var(--muted)}.breadcrumb{padding-block:22px;font-size:12px;color:var(--muted)}.page-head{padding:48px 0 54px;background:var(--paper);border-bottom:1px solid var(--line)}.page-head h1{font-size:clamp(34px,4vw,54px)}.page-head p{max-width:840px;margin-top:20px;font-size:18px}.page-content{padding-block:64px 88px}.category-tabs{display:flex;gap:12px;flex-wrap:wrap;padding-bottom:28px;border-bottom:1px solid var(--line);margin-bottom:40px}.category-tabs a{font-size:15px;padding:9px 18px;border:1px solid var(--line);background:#fff}.category-tabs a:hover,.category-tabs a[aria-current]{border-color:var(--red);color:var(--red)}.catalog-row{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center;padding:42px 0;border-bottom:1px solid var(--line)}.catalog-row:first-child{padding-top:0}.catalog-photo{background:var(--paper)}.catalog-photo img{width:100%;aspect-ratio:3/2;object-fit:contain}.catalog-row h2{font-size:32px;margin:8px 0 20px}.catalog-row .text-link{margin-top:20px}.product-top{text-align:center;padding:28px 0 0}.product-top h1{font-size:clamp(32px,4.2vw,56px)}.product-top .lead{max-width:850px;margin:20px auto;color:var(--muted);font-size:18px}.product-top .actions{justify-content:center}.gallery{max-width:1060px;margin:36px auto 30px}.gallery-main{display:block;background:var(--paper)}.gallery-main img{height:clamp(300px,39vw,560px);width:100%;object-fit:contain}.gallery-thumbs{display:flex;gap:12px;margin-top:14px;overflow-x:auto;padding:2px}.gallery-thumbs button{background:#fff;border:1px solid var(--line);padding:0;flex:0 0 116px}.gallery-thumbs button[aria-pressed=true]{border:2px solid var(--red)}.gallery-thumbs img{width:100%;aspect-ratio:3/2;object-fit:contain}.gallery figcaption{text-align:left}.technical-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:28px}.technical-strip div{padding:22px 30px;border-right:1px solid var(--line)}.technical-strip div:last-child{border:0}.technical-strip dt{font-size:13px;color:var(--muted)}.technical-strip dd{margin:6px 0 0;font-size:18px;font-weight:600}.detail-nav{position:sticky;top:86px;z-index:25;background:#fff;border-bottom:1px solid var(--line);display:flex;gap:32px;justify-content:center;overflow-x:auto;padding:16px 24px;white-space:nowrap;font-size:14px}.detail-nav a:hover{color:var(--red)}.richtext{font-size:16px;line-height:1.9}.richtext>h2{margin:48px 0 20px;font-size:32px}.richtext>h3{margin:30px 0 14px;font-size:23px}.richtext>p{margin:16px 0}.richtext ul,.richtext ol{padding-left:23px;color:var(--muted)}.richtext li{margin:10px 0}.richtext .feature-spread{padding:60px 0;border-bottom:1px solid var(--line)}.richtext .feature-copy h2{font-size:34px}.richtext figure{margin:26px 0}.richtext .feature-spread figure{margin:0}.richtext .feature-copy p+p{margin-top:16px}.richtext .full-diagram{margin:42px 0}.richtext .full-diagram h2{margin-bottom:25px}.richtext .lead{font-size:21px;color:var(--ink);max-width:1050px}.richtext .statement{padding:32px;border-left:4px solid var(--red);background:var(--paper);margin:35px 0}.richtext .statement h2{font-size:28px;margin-bottom:12px}.richtext .mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:30px 0}.richtext .mini-grid>div{padding:28px;background:var(--paper)}.richtext .mini-grid h3{margin-bottom:12px}.richtext .note{font-size:13px}.table-wrap{overflow-x:auto}.spec-table{border-collapse:collapse;width:100%;font-size:15px;margin-top:28px}.spec-table th,.spec-table td{border-bottom:1px solid var(--line);padding:18px 24px;text-align:left}.spec-table th{font-weight:500;background:var(--paper);width:28%;min-width:150px}.spec-note{margin-top:20px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 275px;gap:68px}.article-layout .richtext{max-width:880px}.article-aside{border-left:1px solid var(--line);padding-left:28px}.article-aside h2{font-size:22px;margin-bottom:16px}.article-aside p{font-size:14px}.article-aside .text-link{margin-top:18px}.article-cover{margin-bottom:35px}.article-cover img{width:100%;max-height:430px;object-fit:contain;background:var(--paper)}.article-list a{display:grid;grid-template-columns:60px 1fr 1fr 30px;gap:24px;padding:28px 0;border-bottom:1px solid var(--line);align-items:start}.article-list span{color:var(--red);font:14px monospace}.article-list h2{font-size:23px}.article-list p{font-size:14px}.article-list a:hover h2{color:var(--red)}.paging{display:flex;justify-content:center;gap:10px;margin-top:45px}.paging a{font-size:14px;border:1px solid var(--line);padding:7px 14px}.case-gallery{display:grid;grid-template-columns:1fr 1fr;gap:40px 28px}.case-card img{aspect-ratio:3/2;width:100%;object-fit:contain;background:var(--paper)}.case-card h2{font-size:28px;margin:22px 0 14px}.case-card .text-link{margin-top:20px}.contact-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:80px}.contact-layout .big-phone{font-size:clamp(32px,4.5vw,57px);font-weight:700;letter-spacing:-.03em;color:var(--red)}.contact-layout dl{margin:26px 0}.contact-layout dt{font-size:13px;color:var(--muted)}.contact-layout dd{margin:3px 0 20px;font-size:18px}.qr-panel{border:1px solid var(--line);padding:36px;display:grid;grid-template-columns:170px 1fr;gap:30px;align-items:center}.qr-panel img{width:170px}.qr-panel h2{font-size:25px;margin-bottom:12px}.qr-panel p{font-size:14px}.about-banner img{width:100%;max-height:530px;object-fit:contain;background:var(--paper)}.image-dialog{padding:50px 12px 12px;border:0;background:#fff;width:min(1200px,95vw);max-height:95vh}.image-dialog::backdrop{background:#000c}.image-dialog img{max-height:78vh;object-fit:contain;margin:auto}.image-dialog button{position:absolute;right:15px;top:5px;border:0;background:none;font-size:30px}.image-dialog a{display:block;text-align:center;font-size:13px;color:var(--red);margin-top:8px}
.dark .section-no{color:#ff9296}.retrofit-block .article-list a{grid-template-columns:35px minmax(0,1fr) 20px}.retrofit-block .article-list h2{font-size:21px}
@media(min-width:1500px){:root{--max:1320px}.hero-media{max-width:1100px}}
@media(max-width:1180px){.wrap{width:calc(100% - 48px)}.header-row{gap:20px}.site-nav{gap:18px}.header-contact{display:none}.feature-spread,.product-panel,.retrofit-block,.catalog-row{gap:38px}.article-layout{gap:36px}.brand strong{font-size:23px}.contact-layout{gap:36px}.qr-panel{grid-template-columns:1fr}.qr-panel img{width:150px}}
@media(max-width:850px){html{scroll-padding-top:120px}.wrap{width:calc(100% - 36px)}.section{padding-block:60px}.header-row{min-height:72px;justify-content:space-between}.menu-button{display:block}.site-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;box-shadow:0 14px 25px #0001;max-height:calc(100vh - 72px);overflow:auto}.site-nav.is-open{display:block}.site-nav a{display:block;line-height:48px}.site-nav a[aria-current]:after{display:none}.hero{padding-top:44px}.hero .lead{font-size:17px}.hero-media img{height:360px}.value-strip{grid-template-columns:1fr 1fr;gap:22px}.value-strip>div{padding:0;border:0}.value-strip b{font-size:19px}.product-panel,.feature-spread,.feature-spread.reverse,.retrofit-block,.catalog-row,.contact-layout{grid-template-columns:1fr;gap:30px}.product-tabs button{font-size:14px;padding:14px 17px}.product-panel h3{font-size:28px}.feature-spread.reverse figure{order:-1}.steps,.service-grid{grid-template-columns:1fr 1fr}.component-key{grid-template-columns:1fr 1fr}.scenario-row{grid-template-columns:40px 1fr 20px;gap:18px}.scenario-row p{grid-column:2;grid-row:2}.scenario-row>strong{grid-column:3;grid-row:1}.scenario-row h3{font-size:21px}.footer-grid{grid-template-columns:1fr 1fr}.contact-ribbon .wrap{display:block}.contact-ribbon .button{margin-top:22px}.contact-ribbon h2{font-size:29px}.page-head{padding:34px 0 40px}.page-head p{font-size:16px}.page-content{padding-block:42px 60px}.detail-nav{top:72px;justify-content:flex-start;gap:24px}.technical-strip dd{font-size:15px}.technical-strip div{padding:18px 14px}.article-layout{grid-template-columns:1fr}.article-aside{border-left:0;border-top:1px solid var(--line);padding:30px 0 0}.article-list a{grid-template-columns:40px 1fr 20px;gap:14px}.article-list p{grid-column:2;grid-row:2}.article-list b{grid-column:3;grid-row:1}.case-gallery{gap:32px 22px}.case-card h2{font-size:24px}.qr-panel{grid-template-columns:150px 1fr}.richtext .feature-spread{padding-block:38px}.richtext .feature-copy h2{font-size:29px}}
@media(max-width:520px){h1{font-size:37px}.hero .lead{font-size:16px}.hero-media img{height:280px}.hero .actions .button{padding-inline:20px;font-size:14px;gap:14px}.hero-media figcaption{font-size:11px}.section-title{margin-bottom:28px}.section-title p{font-size:16px}.product-tabs{overflow-x:auto;white-space:nowrap;gap:12px}.product-tabs button{padding:13px 4px;flex:1}.product-panel h3{font-size:26px}.spec-mini{gap:12px}.component-key,.case-gallery,.richtext .mini-grid{grid-template-columns:1fr}.service-grid{gap:10px 20px}.service-grid>div{padding-right:0}.service-grid h3{font-size:19px}.steps>div{padding-right:18px}.steps h3{font-size:18px}.footer-grid{gap:28px 20px}.footer-grid>div:first-child,.footer-grid>div:last-child{grid-column:1/-1}.technical-strip{grid-template-columns:1fr;text-align:left}.technical-strip div{border-right:0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:85px 1fr;align-items:center;gap:14px}.technical-strip dd{margin:0}.gallery-main img{height:270px}.gallery-thumbs button{flex-basis:84px}.qr-panel{padding:22px;grid-template-columns:110px 1fr;gap:18px}.qr-panel img{width:110px}.qr-panel h2{font-size:20px}.richtext .statement{padding:22px}.richtext .lead{font-size:18px}.spec-table th,.spec-table td{padding:13px 15px}.spec-table th{min-width:118px}.category-tabs{gap:9px}.category-tabs a{padding:8px 12px;font-size:14px}.brand-list{font-size:18px}.article-list h2{font-size:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* System overview: image and numbered descriptions form one technical plate. */
/* Approved emblem: orange eye and eyebrow, green upright monogram. */
.brand-mark{display:block;flex:0 0 100px;width:100px;height:56px;padding:6px;border:1px solid #f9982f;border-radius:6px;transform:none;background:#fff url("images/brand-emblem.png?v=1") center/contain no-repeat;background-origin:content-box;background-clip:padding-box}
.brand-mark:after{content:none}
@media(min-width:851px) and (max-width:1020px){
  html{scroll-padding-top:120px}
  .header-row{min-height:72px;justify-content:space-between}
  .menu-button{display:block}
  .site-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;box-shadow:0 14px 25px #0001;max-height:calc(100vh - 72px);overflow:auto}
  .site-nav.is-open{display:block}
  .site-nav a{display:block;line-height:48px}
  .site-nav a[aria-current]:after{display:none}
  .detail-nav{top:72px;justify-content:flex-start;gap:24px}
}
@media(max-width:520px){
  .brand{gap:10px}
  .brand-mark{flex-basis:82px;width:82px;height:46px;padding:4px;border-radius:5px}
}
.component-key{gap:0 28px}
.component-key p{margin:0;padding:20px 0;font-size:16px;line-height:1.75}
.component-key b{display:block;margin:0 0 5px;font-size:18px;font-weight:650;line-height:1.5}
.system-layout{display:grid;grid-template-columns:minmax(0,2.35fr) minmax(280px,1fr);gap:36px;align-items:center;background:#fff;padding:32px}
.system-layout .full-diagram{min-width:0;margin:0}
.system-layout .full-diagram img{max-height:none;height:auto}
.system-layout .diagram-note{display:flex;align-items:flex-start;gap:16px;margin-top:16px;padding:16px 18px;background:var(--paper);font-size:13px;line-height:1.8}
.diagram-note-label{flex:none;padding-left:10px;border-left:2px solid var(--red);color:var(--ink);font-weight:600}
.system-layout .component-key{grid-template-columns:minmax(0,1fr);gap:0;align-self:stretch;align-content:center}
.system-layout .component-key p{padding:16px 0;font-size:15px}
.system-layout .component-key p:first-child{border-top:0;padding-top:0}
.system-layout .component-key p:last-child{padding-bottom:0}
.system-layout .component-key b{font-size:18px}

/* Put configuration context beside the enquiry; keep the legal row independent. */
.contact-ribbon .customization-note{margin-top:12px;padding-left:12px;border-left:2px solid var(--red);font-size:13px;line-height:1.7}
.contact-ribbon .button{flex-shrink:0}
.footer{padding-bottom:0}
.footer-bottom{margin-top:44px;padding:20px 0;background:var(--paper);border-top:1px solid var(--line)}
.legal-row{display:flex;align-items:center;justify-content:space-between;gap:12px 32px;color:var(--muted);font-size:13px;line-height:1.8}
.legal-copyright{min-width:0;overflow-wrap:anywhere}
.legal-copyright p{font-size:inherit;margin:0}
.footer .legal-registration{flex:none;white-space:nowrap;font-size:13px;color:var(--muted)}
.footer .legal-registration:hover{color:var(--red)}
@media(max-width:1000px){
  .system-layout{grid-template-columns:minmax(0,1fr);gap:24px;padding:24px}
  .system-layout .component-key{grid-template-columns:repeat(3,minmax(0,1fr));gap:0 24px}
  .system-layout .component-key p,.system-layout .component-key p:first-child,.system-layout .component-key p:last-child{border-top:1px solid var(--line);padding:18px 0}
}
@media(max-width:700px){
  .system-layout .component-key{grid-template-columns:repeat(2,minmax(0,1fr))}
  .legal-row{flex-direction:column;align-items:flex-start;gap:6px}
  .footer-bottom{margin-top:32px;padding:18px 0}
}
@media(max-width:520px){
  .system-layout{padding:16px;gap:16px}
  .system-layout .component-key{grid-template-columns:minmax(0,1fr)}
  .system-layout .diagram-note{flex-direction:column;gap:7px;padding:14px}
  .system-layout .component-key b{font-size:17px}
}

/* Native PbootCMS friend-link group 2; the links remain editable in the CMS. */
.footer .cms-friend-links{display:flex;align-items:center;flex-wrap:wrap;gap:8px 24px;margin-top:32px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:14px;line-height:1.6}
.footer .cms-friend-links:empty{display:none}
.footer .cms-friend-links__label{color:var(--ink);font-weight:600}
.footer .cms-friend-links a{padding:4px 0;overflow-wrap:anywhere}
.footer .cms-friend-links a:hover{color:var(--red)}