:root{--ref-teal:#009b8c;--ref-teal-dark:#007d72;--ref-ink:#15191a;--ref-charcoal:#24292b;--ref-paper:#f5f7f6;--ref-line:#dce2df;--ref-muted:#687270;--ref-text:#eee7dc}
.reference-site .ref-quote img{width:calc(100% + max(48px,(100vw - 1400px)/2))!important}
@media(max-width:900px){.reference-site .ref-quote img{width:100%!important}}
@media(min-width:901px) and (max-width:1050px){.reference-site .shell{width:calc(100% - 36px)}.ref-topbar__contact a:nth-child(2){display:none}.reference-site .ref-header .nav-wrap{height:82px}.reference-site .ref-header .brand__mark{width:46px;height:46px}.reference-site .menu-toggle{display:grid;margin-left:auto}.reference-site .ref-header .nav{display:none;position:absolute;left:0;right:0;top:100%;height:auto;background:#1c2122;padding:12px 18px 25px;flex-direction:column}.reference-site .ref-header .nav.open{display:flex}.reference-site .ref-header .nav>a{min-height:48px}.mega-menu{display:none!important}.ref-search{display:none}.ref-language{height:82px;align-self:auto}.ref-language__menu{top:65px}.ref-product-feature,.ref-about,.ref-quote>.shell{grid-template-columns:1fr}.ref-product-feature--reverse .ref-product-feature__copy,.ref-product-feature--reverse .ref-product-gallery{order:unset}.ref-quote>.shell>div{padding:65px 0}.reference-site .ref-quote img{width:100%!important;height:380px}.ref-footer__grid{grid-template-columns:1fr 1fr}}
html{scroll-behavior:smooth}
body.reference-site{margin:0;color:var(--ref-ink);background:#fff;font-family:Arial,"Helvetica Neue","Microsoft YaHei",sans-serif}
.reference-site .shell{width:min(1400px,calc(100% - 96px));margin-inline:auto}
.reference-site .ref-topbar{height:58px;background:#282d2f;color:#fff;border:0}
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.ref-topbar__contact{display:flex;align-items:center;gap:30px;background:var(--ref-teal);padding:0 38px;position:relative}
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.ref-topbar__contact a{color:#fff;text-decoration:none;font-size:14px;letter-spacing:.01em}
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.reference-site .ref-header .brand__mark:before{content:"";position:absolute;inset:9px;border:2px solid var(--ref-teal);transform:rotate(45deg)}
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.reference-site .ref-header .brand__copy b{font:700 20px/1.05 Georgia,serif;letter-spacing:.045em}
.reference-site .ref-header .brand__copy small{font-size:10px;letter-spacing:.18em;color:#aeb9b6}
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.reference-site .ref-header .nav>a:hover,.reference-site .ref-header .nav>a.active{color:#36d4c2}
.reference-site .ref-header .nav>a:hover:after,.reference-site .ref-header .nav>a.active:after{transform:scaleX(1)}
.ref-search{border:0;border-left:1px solid #4c5354;background:none;color:#fff;font-size:24px;padding:0 8px 0 26px;cursor:pointer}
.ref-language{position:relative;align-self:stretch;display:flex;align-items:center}
.reference-site .ref-language .lang{height:44px;border:0;background:none;color:#fff;padding:0 4px 0 12px;font-size:14px;font-weight:700;cursor:pointer}
.reference-site .ref-language .lang:after{content:"⌄";margin-left:8px;color:var(--ref-teal)}
.ref-language__menu{display:none;position:absolute;right:0;top:82px;width:175px;padding:10px;background:#1d2122;box-shadow:0 18px 35px #0007}
.ref-language:hover .ref-language__menu,.ref-language:focus-within .ref-language__menu{display:grid}
.ref-language.is-open .ref-language__menu{display:grid}
.ref-language__menu button[hidden]{display:none!important}
.ref-language__menu button{border:0;background:none;color:#fff;padding:13px 12px;text-align:left;cursor:pointer}
.ref-language__menu button:hover{background:var(--ref-teal)}
.mega-menu{position:absolute;top:100%;left:-210px;width:700px;padding:30px 34px;background:#fff;box-shadow:0 25px 55px #0004;display:none;grid-template-columns:1.2fr 1.2fr 1fr;gap:32px;color:var(--ref-ink)}
.reference-site .nav>a:nth-child(2):hover+.mega-menu,.mega-menu:hover{display:grid}
.mega-menu>div{display:flex;flex-direction:column;gap:10px}
.mega-menu strong{font-size:12px;color:var(--ref-teal);letter-spacing:.12em;border-bottom:1px solid var(--ref-line);padding-bottom:11px;margin-bottom:3px}
.reference-site .mega-menu a{color:#303737;text-decoration:none;font-size:13px;padding:3px 0}
.reference-site .mega-menu a:hover{color:var(--ref-teal)}
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.ref-hero__slide{position:absolute;inset:0;background:linear-gradient(90deg,#0c1111e8 0%,#0c1111a8 46%,#0c111130 72%),var(--hero) center/cover no-repeat;transition:opacity .45s}
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.ref-hero__content>p,.ref-kicker{font-size:12px;font-weight:800;letter-spacing:.23em;color:var(--ref-teal);margin:0 0 20px}
.ref-hero__content h1{max-width:780px;margin:0;font:700 clamp(42px,5.1vw,76px)/1.04 Georgia,serif;letter-spacing:-.025em}
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.ref-btn:hover{background:var(--ref-teal-dark);transform:translateY(-2px)}
.ref-btn--ghost{background:transparent;border-color:#fff8}.ref-btn--ghost:hover{background:#fff;color:var(--ref-ink)}
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.ref-hero__pager button.active{border-color:var(--ref-teal);color:#41dcc9}
.ref-products-intro{text-align:center;padding-block:104px 85px;max-width:950px!important}
.ref-products-intro h2,.ref-industries h2,.ref-advantages h2,.ref-cert h2,.ref-materials h2{margin:0;font:700 clamp(32px,3.6vw,52px)/1.15 Georgia,serif}
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.ref-product-feature--reverse .ref-product-feature__copy{order:2}.ref-product-feature--reverse .ref-product-gallery{order:1}
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.ref-product-feature__copy>a{color:#fff;text-decoration:none;font-size:12px;font-weight:800;letter-spacing:.1em}
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.ref-product-gallery img{width:100%;height:100%;object-fit:contain;padding:24px;box-sizing:border-box;transition:.45s}
.ref-product-gallery article:hover img{transform:scale(1.08)}
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.ref-industries{padding:105px 0;background:#f1f4f3;text-align:center}
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.ref-industry-tabs button{border:0;background:none;padding:18px 30px;font-weight:700;color:#65706e;cursor:pointer;border-bottom:3px solid transparent}
.ref-industry-tabs button.active{color:var(--ref-teal);border-color:var(--ref-teal)}
.ref-industry-view{display:grid;grid-template-columns:1.4fr .6fr;background:#fff;text-align:left;min-height:390px}
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.ref-industry-view h3{font:700 32px Georgia,serif;margin:0 0 16px}.ref-industry-view p{color:var(--ref-muted);line-height:1.75}.ref-industry-view a{color:var(--ref-teal);font-size:12px;font-weight:800;text-decoration:none;margin-top:18px}
.ref-about{padding-block:105px;display:grid;grid-template-columns:1.05fr .95fr;gap:85px;align-items:center}.reference-v2 .ref-about__copy h2{color:#eee7dc}
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.ref-about__image img{width:100%;height:550px;object-fit:cover}
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.ref-stats{display:flex;border-block:1px solid var(--ref-line);margin:32px 0;gap:0}.ref-stats span{flex:1;padding:20px 12px 20px 0;display:grid;border-right:1px solid var(--ref-line)}.ref-stats span:last-child{border:0}.ref-stats b{font:700 28px Georgia,serif;color:var(--ref-teal)}.ref-stats i{font-style:normal;font-size:10px;letter-spacing:.12em;color:var(--ref-muted);margin-top:6px}
.ref-advantages{padding:100px 0;background:var(--ref-ink);color:#fff;text-align:center}
.ref-advantage-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:52px;border:1px solid #ffffff26}
.ref-advantage-grid article{text-align:left;padding:38px 30px;border-right:1px solid #ffffff26}.ref-advantage-grid article:last-child{border:0}.ref-advantage-grid b{font-size:12px;color:var(--ref-teal)}.ref-advantage-grid h3{font:700 21px/1.25 Georgia,serif;margin:55px 0 14px}.ref-advantage-grid p{color:#abb5b2;line-height:1.7;font-size:14px}
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.ref-cert{text-align:center;padding-block:105px}.reference-v2 .ref-cert h2{color:#eee7dc}.reference-v2 .ref-cert>p{color:#aeb8b6}.ref-cert-grid{display:grid;grid-template-columns:repeat(6,1fr);margin-top:45px;border:1px solid var(--ref-line)}.ref-cert-grid span{height:105px;display:grid;place-items:center;border-right:1px solid var(--ref-line);font:700 19px Georgia,serif;color:#495250}.ref-cert-grid span:last-child{border:0}
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.ref-cert-grid--images .ref-cert-card__image{height:255px;display:grid;place-items:center;border:0!important;color:inherit;font:inherit;background:#f7f3e8}.ref-cert-grid--images .ref-cert-card__image:last-child{border:0!important}
.ref-materials{padding:100px 0;background:#f1f4f3;text-align:center}.ref-material-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:45px}.ref-material-grid article{background:#fff;text-align:left}.ref-material-grid img{width:100%;height:280px;object-fit:contain;padding:25px;box-sizing:border-box}.ref-material-grid h3{margin:0;padding:22px 25px;border-top:1px solid var(--ref-line);font:700 20px Georgia,serif}
.ref-news{padding-block:105px}.reference-v2 .ref-news h2{color:#eee7dc}.reference-v2 .ref-news-grid h3{color:#e8e4d8}.ref-section-head{display:flex;justify-content:space-between;align-items:end}.ref-section-head h2{font:700 clamp(34px,4vw,52px)/1.14 Georgia,serif;max-width:720px;margin:0}.ref-section-head>a{color:var(--ref-teal);font-size:12px;font-weight:800;text-decoration:none}.ref-news-grid{display:grid;grid-template-columns:repeat(3,1fr);margin-top:45px;border-top:1px solid var(--ref-line)}.ref-news-grid article{padding:35px 36px 10px 0;border-right:1px solid var(--ref-line);margin-right:35px}.ref-news-grid article:last-child{border:0}.ref-news-grid time{font-size:11px;letter-spacing:.13em;color:var(--ref-teal)}.ref-news-grid h3{font:700 22px/1.35 Georgia,serif}.ref-news-grid p{color:var(--ref-muted);line-height:1.75;font-size:14px}
.reference-site .ref-footer{background:#171b1c;color:#fff;padding:0;border:0}.ref-footer__top{display:flex;justify-content:space-between;align-items:center;padding-block:55px;border-bottom:1px solid #ffffff24}.ref-footer__top h2{margin:0;font:700 clamp(28px,4vw,48px) Georgia,serif}.ref-footer__top h2 em{color:var(--ref-teal);font-style:normal}.ref-footer__top>a{width:50px;height:50px;display:grid;place-items:center;border:1px solid #ffffff3b;color:#fff;text-decoration:none;font-size:22px}.ref-footer__grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:70px;padding-block:60px}.ref-footer__grid>div{display:flex;flex-direction:column;align-items:flex-start;gap:13px}.ref-footer__grid h3{font-size:12px;letter-spacing:.16em;color:var(--ref-teal);margin:0 0 10px}.ref-footer__grid a,.ref-footer__grid p{color:#b6bfbd;text-decoration:none;font-size:13px;line-height:1.6;margin:0}.ref-footer__grid a:hover{color:#fff}.ref-footer__bottom{border-top:1px solid #ffffff1f;padding-block:22px;color:#7f8987;font-size:12px}
.reference-site .floating-quote{background:var(--ref-teal)!important}.reference-site .button--red{background:var(--ref-teal)!important;border-color:var(--ref-teal)!important}
@media(max-width:1120px){.reference-site .shell{width:min(100% - 48px,1100px)}.reference-site .ref-header .nav-wrap{height:96px}.reference-site .ref-header .brand{min-width:230px}.reference-site .ref-header .brand__copy b{font-size:16px}.reference-site .ref-header .nav>a{padding-inline:12px;font-size:12px}.ref-search{display:none}.ref-product-feature{gap:40px}.ref-footer__grid{gap:35px}}
@media(max-width:900px){.reference-site .shell{width:calc(100% - 36px)}.ref-topbar__contact a:nth-child(2){display:none}.reference-site .ref-topbar .quote-button{padding-inline:18px}.reference-site .ref-header .nav-wrap{height:82px}.reference-site .ref-header .brand__mark{width:46px;height:46px}.reference-site .menu-toggle{display:grid;margin-left:auto}.reference-site .ref-header .nav{display:none;position:absolute;left:0;right:0;top:100%;height:auto;background:#1c2122;padding:12px 18px 25px;flex-direction:column}.reference-site .ref-header .nav.open{display:flex}.reference-site .ref-header .nav>a{min-height:48px}.mega-menu{display:none!important}.ref-language{height:82px;align-self:auto}.ref-language__menu{top:65px}.ref-hero{height:590px}.ref-product-feature,.ref-about,.ref-quote>.shell{grid-template-columns:1fr}.ref-product-feature--reverse .ref-product-feature__copy,.ref-product-feature--reverse .ref-product-gallery{order:unset}.ref-industry-view{grid-template-columns:1fr}.ref-industry-view img{height:330px;min-height:0}.ref-about__image img{height:420px}.ref-advantage-grid{grid-template-columns:1fr 1fr}.ref-advantage-grid article:nth-child(2){border-right:0}.ref-advantage-grid article:nth-child(-n+2){border-bottom:1px solid #ffffff26}.ref-quote>.shell>div{padding:65px 0}.ref-quote img{width:100%;height:380px}.ref-cert-grid{grid-template-columns:repeat(3,1fr)}.ref-cert-grid span:nth-child(3){border-right:0}.ref-cert-grid span:nth-child(-n+3){border-bottom:1px solid var(--ref-line)}.ref-footer__grid{grid-template-columns:1fr 1fr}}
@media(max-width:900px){.reference-v2 .ref-about-hub{padding-block:72px}.reference-v2 .ref-about-hub__intro{display:block}.reference-v2 .ref-about-hub__intro p{max-width:none;margin-top:16px}.reference-v2 .ref-about-hub__grid{grid-template-columns:1fr}}
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.reference-v2 .pdf-section{padding:88px 0 102px;background:#eef3f1}
.reference-v2 .pdf-section--dark{background:#171b1c;color:#fff}
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.reference-v2 .pdf-section__intro h2{margin:0;font:700 clamp(30px,3.6vw,50px)/1.12 Georgia,serif}
.reference-v2 .pdf-section__intro p{margin:0;max-width:480px;color:var(--ref-muted);line-height:1.8}
.reference-v2 .pdf-section--dark .pdf-section__intro p{color:#bfc7c4}
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.reference-v2 .pdf-fact--dark{background:#202627;border-color:#2f3637}
.reference-v2 .pdf-fact h3{margin:0;font:700 22px/1.18 Georgia,serif;color:var(--ref-ink)}
.reference-v2 .pdf-fact--dark h3{color:#fff}
.reference-v2 .pdf-fact p{margin:0;color:var(--ref-muted);line-height:1.72;font-size:14px}
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.reference-v2 .pdf-fact a{color:var(--ref-teal);text-decoration:none;font-weight:700;font-size:12px;letter-spacing:.08em}
.reference-v2 .pdf-fact__figure{margin:0;border:1px solid var(--ref-line);background:#fff;overflow:hidden}
.reference-v2 .pdf-fact__figure img{display:block;width:100%;height:260px;object-fit:contain;background:#f6f8f7}
.reference-v2 .pdf-fact__figure figcaption{padding:14px 16px;border-top:1px solid var(--ref-line);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--ref-muted)}
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.reference-v2 .pdf-hero-band__card{min-height:320px;background:linear-gradient(180deg,rgba(8,16,15,.1),rgba(8,16,15,.02)),#fff;border:1px solid var(--ref-line);padding:34px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}
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.reference-v2 .pdf-hero-band__card h3{margin:0;font:700 clamp(26px,2.8vw,38px)/1.08 Georgia,serif}
.reference-v2 .pdf-hero-band__card p{margin:16px 0 0;color:var(--ref-muted);line-height:1.75}
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.reference-v2 .pdf-doc__head p{margin:10px 0 0;color:var(--ref-muted);line-height:1.7}
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.reference-v2 .pdf-doc__images img{display:block;width:100%;height:230px;object-fit:contain;background:#f5f7f6;transition:transform .3s ease}
.reference-v2 .pdf-doc__images a:hover img{transform:scale(1.04)}
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.reference-v2 .pdf-doc--wide .pdf-doc__images{grid-template-columns:repeat(3,1fr)}
.reference-v2 .pdf-doc--wide .pdf-doc__images img{height:200px}
.reference-v2 .pdf-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:18px}
.reference-v2 .pdf-metrics article{background:#fff;border:1px solid var(--ref-line);padding:22px 20px;min-height:140px;display:flex;flex-direction:column;justify-content:space-between}
.reference-v2 .pdf-metrics b{font:700 31px Georgia,serif;color:var(--ref-teal)}
.reference-v2 .pdf-metrics span{color:var(--ref-muted);font-size:13px;line-height:1.65}
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.reference-v2 .pdf-pill:hover{border-color:var(--ref-teal);color:var(--ref-teal)}
.reference-v2 .profile-text{padding:90px 0 105px;background:#eef3f1}
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.reference-v2 .profile-text__body{background:#fff;border:1px solid var(--ref-line);box-shadow:0 20px 50px rgba(0,0,0,.05)}
.reference-v2 .profile-text__head{padding:38px 42px;border-bottom:1px solid var(--ref-line)}
.reference-v2 .profile-text__head .ref-kicker{margin-bottom:13px}
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.reference-v2 .profile-side__metric span{padding:16px;border-right:1px solid #ffffff24;border-bottom:1px solid #ffffff24}
.reference-v2 .profile-side__metric span:nth-child(even){border-right:0}
.reference-v2 .profile-side__metric span:nth-last-child(-n+2){border-bottom:0}
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.reference-v2 .profile-side__metric i{font-style:normal;font-size:12px;color:#cfd8d5;line-height:1.45}
.reference-v2 .profile-side__link{display:inline-flex;align-items:center;justify-content:center;min-height:48px;background:var(--ref-teal);color:#fff;text-decoration:none;font-weight:800;font-size:12px;letter-spacing:.08em}
.reference-v2 .profile-license{padding:86px 0 100px;background:#171b1c;color:#fff}
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.reference-v2 .profile-license h2{margin:0 0 18px;font:700 clamp(30px,3.2vw,46px)/1.13 Georgia,"Times New Roman","Microsoft YaHei",serif}
.reference-v2 .profile-license p{color:#bfc7c4;line-height:1.8}
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.reference-v2 .profile-license__figure figcaption{padding-top:14px;color:#5f6966;font-size:13px}
.reference-v2 .home-hero{margin-bottom:0}
.reference-v2 .home-products{background:var(--ref-teal);color:#fff;padding:88px 0 98px;position:relative;overflow:hidden}
.reference-v2 .home-products:before{content:"";position:absolute;left:0;right:0;top:0;height:52px;background:linear-gradient(180deg,rgba(0,0,0,.24),transparent)}
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.reference-v2 .home-product-panel__grid span{padding:11px 14px;background:#fff;font-size:12px;color:#38403e;border-top:1px solid #e7ecea}
.reference-v2 .home-product-panel__grid--flanges img{height:158px}
.reference-v2 .home-industries{background:#1a1f20;padding:92px 0;color:#fff;text-align:left}
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.reference-v2 .home-industries__media{position:relative;min-height:640px;overflow:hidden;background:#000}
.reference-v2 .home-industries__media img{width:100%;height:100%;object-fit:cover;display:block}
.reference-v2 .home-industries__caption{position:absolute;left:0;right:0;bottom:0;padding:34px 32px 30px;background:linear-gradient(180deg,rgba(5,6,6,0),rgba(5,6,6,.9) 32%,rgba(5,6,6,.95));}
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.reference-v2 .home-industries__caption .ref-industry-copy p{margin-bottom:20px}
.reference-v2 .home-industries__caption .ref-btn--light{margin-top:4px}
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.reference-v2 .home-industries__tabs button{position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:108px;padding:0 26px;background:transparent;color:#eee7dc;border:0;border-bottom:1px solid rgba(255,255,255,.08);font-size:19px;font-weight:500;text-align:left;cursor:pointer;transition:background-color .22s ease,color .22s ease,transform .22s ease}
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.reference-v2 .home-industries__tabs button.active{background:var(--ref-teal);color:#fff;transform:translateX(0)}
.reference-v2 .home-industries__tabs button.active:after{content:"—";color:#fff}
.reference-v2 .home-about{background:#1c2021;color:#fff;padding:96px 0}
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.reference-v2 .home-about__copy p{margin:0 0 18px;max-width:540px;color:#d1d7d5;line-height:1.78}
.reference-v2 .home-about__image{position:relative;min-height:500px;overflow:hidden}
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.reference-v2 .home-about__image img{position:relative;display:block;width:100%;height:100%;object-fit:cover}
.reference-v2 .home-values{padding:96px 0;background:#202526;color:#fff;position:relative;overflow:hidden}
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.reference-v2 .home-quote{background:var(--ref-teal);color:#fff;padding:0}
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.reference-v2 .home-certificates{background:#1a1f20;color:#fff;padding:92px 0}
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.reference-v2 .home-certificates__row span{display:block;padding:14px 16px;border-top:1px solid #ecefef;font-size:12px;letter-spacing:.12em;color:#4e5855}
.reference-v2 .home-materials{background:var(--ref-teal);color:#fff;padding:90px 0 96px}
.reference-v2 .home-materials h2{margin:0 0 24px;font:700 clamp(32px,3.8vw,50px)/1.12 Georgia,"Times New Roman","Microsoft YaHei",serif}
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.reference-v2 .home-cases{background:#1a1f20;color:#fff;padding:92px 0}
.reference-v2 .home-cases__grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px;align-items:stretch}
.reference-v2 .home-cases__copy h2{margin:0 0 18px;font:700 clamp(32px,4vw,52px)/1.1 Georgia,"Times New Roman","Microsoft YaHei",serif}
.reference-v2 .home-cases__copy p{margin:0 0 18px;color:#d0d7d4;line-height:1.8}
.reference-v2 .home-cases__card{position:relative;min-height:300px;background:#101314;overflow:hidden}
.reference-v2 .home-cases__card img{width:100%;height:100%;object-fit:cover;display:block;opacity:.9}
.reference-v2 .home-cases__card div{position:absolute;left:0;right:0;bottom:0;padding:24px 24px 20px;background:linear-gradient(180deg,rgba(9,11,11,0),rgba(9,11,11,.92) 28%,rgba(9,11,11,.96))}
.reference-v2 .home-cases__card h3{margin:0 0 8px;font:700 24px/1.15 Georgia,"Times New Roman","Microsoft YaHei",serif}
.reference-v2 .home-cases__card p{margin:0;color:#d0d7d4;line-height:1.7}
@media (max-width: 1120px){
  .reference-v2 .pdf-section{padding:72px 0 82px}
  .reference-v2 .pdf-section__intro,
  .reference-v2 .pdf-hero-band,
  .reference-v2 .pdf-doc-stack{grid-template-columns:1fr;display:grid}
  .reference-v2 .pdf-fact-grid,
  .reference-v2 .pdf-metrics{grid-template-columns:repeat(2,1fr)}
  .reference-v2 .pdf-doc--wide .pdf-doc__images,
  .reference-v2 .pdf-doc__images{grid-template-columns:repeat(2,1fr)}
  .reference-v2 .profile-text__layout,
  .reference-v2 .profile-license__grid{grid-template-columns:1fr}
  .reference-v2 .profile-side{position:static}
  .reference-v2 .home-products__intro,
  .reference-v2 .home-about__grid,
  .reference-v2 .home-cases__grid,
  .reference-v2 .home-quote__grid,
  .reference-v2 .home-industries__grid{grid-template-columns:1fr;display:grid}
  .reference-v2 .home-product-panel,
  .reference-v2 .home-product-panel--reverse{grid-template-columns:1fr}
  .reference-v2 .home-values__grid,
  .reference-v2 .home-certificates__row,
  .reference-v2 .home-materials__grid{grid-template-columns:repeat(2,1fr)}
  .reference-v2 .home-industries__media{min-height:420px}
}
@media (max-width: 700px){
  .reference-v2 .pdf-fact-grid,
  .reference-v2 .pdf-metrics,
  .reference-v2 .pdf-doc__images,
  .reference-v2 .pdf-doc--wide .pdf-doc__images{grid-template-columns:1fr}
  .reference-v2 .pdf-hero-band__card,
  .reference-v2 .pdf-doc{padding:18px}
  .reference-v2 .pdf-hero-band__images img,
  .reference-v2 .pdf-doc__images img{height:210px}
  .reference-v2 .profile-text{padding:64px 0 74px}
  .reference-v2 .profile-chapter{grid-template-columns:1fr;padding:28px 22px;gap:10px}
  .reference-v2 .profile-text__head{padding:30px 22px}
  .reference-v2 .profile-license{padding:64px 0 74px}
  .reference-v2 .home-products,
  .reference-v2 .home-industries,
  .reference-v2 .home-about,
  .reference-v2 .home-values,
  .reference-v2 .home-certificates,
  .reference-v2 .home-materials,
  .reference-v2 .home-cases{padding:66px 0}
  .reference-v2 .home-product-panel__grid,
  .reference-v2 .home-values__grid,
  .reference-v2 .home-certificates__row,
  .reference-v2 .home-materials__grid{grid-template-columns:1fr}
  .reference-v2 .home-product-panel{padding:18px}
  .reference-v2 .home-product-panel__copy{padding:18px 4px}
  .reference-v2 .home-industries__caption,
  .reference-v2 .home-quote__form{padding:28px 20px}
  .reference-v2 .home-industries__tabs button{min-height:82px;font-size:15px;padding:0 18px}
  .reference-v2 .home-industries__media{min-height:300px}
  .reference-v2 .home-about__image{min-height:330px}
}

/* Screenshot-matched public shell: Authentic Fitting architecture with Jianbiao content. */
body.reference-v2{--ref-teal:#019887;--ref-ink:#15191a;background:#15191a;padding-top:134px}
.reference-v2 .shell{width:calc(100% - 120px);max-width:1610px}
.reference-v2 .ref-topbar{position:fixed;z-index:81;inset:0 0 auto;height:54px;background:#282d2f}
.reference-v2 .ref-topbar .topbar__inner{width:calc(100% - 120px);max-width:1610px}
.reference-v2 .ref-topbar__contact{align-self:stretch;flex:0 0 440px;width:440px;min-width:0;gap:12px;padding:0 25px 0 0;background:var(--ref-teal);overflow:visible;white-space:nowrap}
.reference-v2 .ref-topbar__contact a{flex:0 0 auto}
.reference-v2 .ref-topbar__contact:before{background:var(--ref-teal)}
.reference-v2 .ref-topbar__contact a{font:16px/1 "Microsoft YaHei","PingFang SC",sans-serif;letter-spacing:0}
.reference-v2 .ref-topbar .quote-button{align-self:center;min-width:150px;height:40px;padding:0 24px;border-radius:5px;background:var(--ref-teal);font:16px/1 "Microsoft YaHei","PingFang SC",sans-serif;letter-spacing:0}
.reference-v2 .ref-header{position:fixed;z-index:80;inset:54px 0 auto;height:88px;background:#15191a}
body.reference-v2:not(:has(.ref-topbar)){padding-top:88px}
body.reference-v2:not(:has(.ref-topbar)) .ref-header{inset:0 0 auto}
.reference-v2 [id]{scroll-margin-top:158px}
body.reference-v2:not(:has(.ref-topbar)) [id]{scroll-margin-top:104px}
.reference-v2 .ref-header .nav-wrap{position:relative;height:88px;max-width:1610px;justify-content:flex-end;gap:0;width:100%}
.reference-v2 .ref-header .brand{position:absolute;left:60px;top:0;bottom:0;width:420px;display:flex;align-items:center;justify-content:flex-start;overflow:hidden;box-sizing:border-box;flex:none;padding:0}
.reference-v2 .ref-header .brand__logo{display:block;width:100%;height:100%;object-fit:contain;object-position:left center;transform:none}
.reference-v2 .ref-header .nav{margin:0;gap:0;flex:none}
.reference-v2 .ref-header .nav>a{padding:0 20px;color:#eee7dc;font:16px/88px "Microsoft YaHei","PingFang SC",Arial,sans-serif;font-weight:400;letter-spacing:0;transition:color .22s ease,transform .22s ease,background-color .22s ease}
.reference-v2 .ref-header .nav>a:after{left:20px;right:20px;height:4px;background:var(--ref-teal)}
.reference-v2 .ref-header .nav>a:hover,.reference-v2 .ref-header .nav>a.active{color:#1ed4c0}
.reference-v2 .ref-header .nav>a:hover{transform:translateY(-1px)}
.reference-v2 .ref-search{height:88px;margin-left:4px;padding:0 18px;border:0;color:#e8e3d8;font-size:25px}
.reference-v2 .ref-language{height:88px;padding-left:16px;border-left:2px solid #45494a}
.reference-v2 .ref-language .lang{min-width:76px;height:88px;padding:0;color:#eee7dc;font-size:16px;font-weight:400;letter-spacing:0}
.reference-v2 .ref-language .lang:focus{outline:0}
.reference-v2 .ref-language .lang:after{font-size:15px;margin-left:6px}
.reference-v2 .ref-language__menu{top:80px;width:160px}
.reference-v2 .mega-menu{top:80px;left:-170px}
.reference-v2 .mbnav-overlay,.reference-v2 .mbnav-wp{display:none}
.reference-v2 .ref-hero{height:min(640px,calc(100vh - 134px));min-height:520px}
.reference-v2 .ref-hero__slide{background:linear-gradient(90deg,rgba(7,9,9,.56) 0%,rgba(7,9,9,.2) 46%,rgba(7,9,9,.06) 75%),var(--hero) center/cover no-repeat}
.reference-v2 .ref-hero__content{width:calc(100% - 120px);max-width:1400px;padding-left:105px;justify-content:center;transform:translateY(-50px)}
.reference-v2 .ref-hero__content h1{max-width:760px;margin:0;font:700 clamp(34px,2.55vw,43px)/1.25 "Microsoft YaHei","PingFang SC",Arial,sans-serif;letter-spacing:0;text-shadow:0 2px 14px rgba(0,0,0,.36)}
.reference-v2 .ref-hero__content>p{max-width:700px;margin:18px 0 38px;color:#fff;font:400 clamp(19px,1.45vw,27px)/1.5 "Microsoft YaHei","PingFang SC",Arial,sans-serif;letter-spacing:0;text-shadow:0 2px 12px rgba(0,0,0,.45)}
.reference-v2 .ref-hero__content>.ref-btn{min-width:140px;height:47px;min-height:47px;padding:0 25px;border:0;border-radius:4px;background:#fff;color:var(--ref-teal);font-size:14px;letter-spacing:0}
.reference-v2 .ref-hero__content>.ref-btn:hover{background:var(--ref-teal);color:#fff}
.reference-v2 .ref-hero__pager{left:50%;right:auto;bottom:35px;transform:translateX(-50%);gap:12px;align-items:center}
.reference-v2 .ref-hero__pager button{position:relative;width:10px;height:10px;padding:0;border:0;border-radius:50%;background:#252b2b;opacity:.8}
.reference-v2 .ref-hero__pager button.active{width:27px;height:27px;border:1px solid #12c6b3;background:transparent;opacity:1}
.reference-v2 .ref-hero__pager button.active:after{content:"";position:absolute;inset:8px;border-radius:50%;background:#12c6b3}
.reference-v2 .ref-side-tools{position:fixed;right:16px;top:32%;z-index:75;display:grid;gap:1px}
.reference-v2 .ref-side-tools>a{width:62px;height:62px;display:grid;place-items:center;border:0;border-radius:6px;background:#2c3133;color:#fff;text-decoration:none;font-size:26px;transition:transform .2s ease,background .2s ease,box-shadow .2s ease}
.reference-v2 .ref-side-tools>a:hover{background:var(--ref-teal);transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.24)}
.reference-v2 .floating-quote{display:none!important}
.reference-v2 .ref-contact-popover{position:fixed;right:320px;top:calc(32% + 64px);z-index:76;width:min(280px,calc(100vw - 380px));padding:18px 20px;background:#1c2122;color:#eee8de;border:1px solid rgba(255,255,255,.09);box-shadow:0 20px 60px rgba(0,0,0,.35);transform:translateY(6px);opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease}
.reference-v2 .ref-contact-popover.is-open{opacity:1;pointer-events:auto;transform:translateY(0)}
.reference-v2 .ref-contact-popover strong{display:block;font:700 18px/1.2 Georgia,serif;margin-bottom:14px;color:#fff}
.reference-v2 .ref-contact-popover p{margin:0 0 12px;display:grid;gap:3px}
.reference-v2 .ref-contact-popover span{font-size:11px;letter-spacing:.12em;color:#7ee5da}
.reference-v2 .ref-contact-popover b{font-size:14px;font-weight:500;word-break:break-word}
.reference-v2 .ref-contact-popover__actions{display:flex;gap:10px;margin-top:16px}
.reference-v2 .ref-contact-popover__actions a,.reference-v2 .ref-contact-popover__actions button{flex:1;border:0;border-radius:4px;background:var(--ref-teal);color:#fff;text-decoration:none;font:700 12px/1 Arial,sans-serif;padding:12px 10px;cursor:pointer;text-align:center}
.reference-v2 .ref-contact-popover__actions button{background:#3a4244}
.reference-v2 .ref-contact-popover__close{position:absolute;top:8px;right:8px;width:28px;height:28px;border:0;border-radius:50%;background:#32393b;color:#fff;font-size:18px;cursor:pointer}
.reference-v2 .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.reference-v2{scrollbar-width:none;-ms-overflow-style:none}
.reference-v2::-webkit-scrollbar{width:0;height:0}

@media(max-width:1440px){
  .reference-v2 .ref-topbar__contact{flex-basis:320px;width:320px}
  .reference-v2 .ref-header .brand{left:48px;width:380px}
  .reference-v2 .ref-header .brand__logo{width:100%}
  .reference-v2 .ref-header .nav>a{padding-inline:10px;font-size:14px}
  .reference-v2 .ref-header .nav>a:after{left:10px;right:10px}
  .reference-v2 .ref-hero__content{padding-left:105px}
}
@media(max-width:1120px){
  body.reference-v2{padding-top:82px}
  .reference-v2 .ref-topbar{display:none}
  .reference-v2 .shell,.reference-v2 .ref-topbar .topbar__inner{width:calc(100% - 48px)}
  .reference-v2 .ref-header .nav-wrap{height:82px}
  .reference-v2 .ref-header{top:0}
  .reference-v2 .ref-header .brand{left:20px;width:300px}
  .reference-v2 .ref-header .brand__logo{width:100%}
  .reference-v2 .ref-header .nav{display:none!important}
  .reference-v2 .mega-menu{display:none!important}
  .reference-v2 .ref-search{display:grid;place-items:center;order:3;width:58px;height:82px;margin:0;padding:0;font-size:23px}
  .reference-v2 .ref-language{order:2;padding-left:0;border-left:0}
  .reference-v2 .menu-toggle{display:grid;order:4;align-content:center;gap:7px;width:52px;height:82px;margin:0;padding:0 8px;border:0;background:transparent;cursor:pointer}
  .reference-v2 .menu-toggle i{display:block;width:32px;height:2px;background:#13c9b6;transition:transform .25s ease,opacity .2s ease}
  .reference-v2 .menu-toggle.is-open i:nth-child(1){transform:translateY(9px) rotate(45deg)}
  .reference-v2 .menu-toggle.is-open i:nth-child(2){opacity:0}
  .reference-v2 .menu-toggle.is-open i:nth-child(3){transform:translateY(-9px) rotate(-45deg)}
  .reference-v2 .mbnav-overlay{display:block;position:fixed;z-index:77;inset:82px 0 0;background:rgba(0,0,0,.58);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .28s ease,visibility .28s ease}
  .reference-v2 .mbnav-overlay.show{opacity:1;visibility:visible;pointer-events:auto}
  .reference-v2 .mbnav-wp{display:block;position:fixed;z-index:78;top:82px;right:0;bottom:0;width:min(430px,88vw);background:#191e1f;color:#eee8de;transform:translateX(102%);visibility:hidden;box-shadow:-20px 0 50px rgba(0,0,0,.36);transition:transform .32s cubic-bezier(.22,.72,.25,1),visibility .32s ease;overflow:hidden}
  .reference-v2 .mbnav-wp.show{transform:translateX(0);visibility:visible}
  .reference-v2 .mbnav-fix{height:100%;overflow-y:auto;overscroll-behavior:contain;padding-bottom:30px}
  .reference-v2 .mbnav-list,.reference-v2 .mbsbnav-list{margin:0;padding:0;list-style:none}
  .reference-v2 .mbnav-item,.reference-v2 .mbsbnav-item{position:relative;display:grid;grid-template-columns:1fr 54px;border-bottom:1px solid rgba(255,255,255,.1)}
  .reference-v2 .mbnav-item>a,.reference-v2 .mbsbnav-item>a{display:flex;align-items:center;min-height:58px;padding:0 24px;color:#eee8de;text-decoration:none;font:500 16px/1.25 "Microsoft YaHei","PingFang SC",Arial,sans-serif;transition:background-color .22s ease,color .22s ease,transform .22s ease}
  .reference-v2 .mbnav-item>a:hover,.reference-v2 .mbsbnav-item>a:hover{background:#212728;color:#fff;transform:translateX(4px)}
  .reference-v2 .mbnav-item.current>a{color:#21d2be}
  .reference-v2 .mbnav-item.current:before{content:"";position:absolute;left:0;top:18px;width:3px;height:22px;background:#18cdb9}
  .reference-v2 .mbnav-item.current>a:hover{background:#1e2425;color:#21d2be}
  .reference-v2 .nextshow{grid-column:2;grid-row:1;width:54px;min-height:58px;border:0;border-left:1px solid rgba(255,255,255,.09);background:transparent;color:#21d2be;font:300 24px/1 Arial,sans-serif;cursor:pointer}
  .reference-v2 .mbsbnav-list{display:none;grid-column:1/-1;background:#121617}
  .reference-v2 .mbsbnav-list.show{display:block}
  .reference-v2 .mbsbnav-item{display:grid;border-bottom:1px solid rgba(255,255,255,.07)}
  .reference-v2 .mbsbnav-item:last-child{border-bottom:0}
  .reference-v2 .mbsbnav-item>a{min-height:50px;padding-left:42px;color:#c7cdca;font-size:14px}
  .reference-v2 .mbsbnav-list2{background:#0d1112}
  .reference-v2 .mbsbnav-list2 .mbsbnav-item>a{min-height:46px;padding-left:62px;color:#aeb8b4;font-size:13px}
  .reference-v2 .mbsbnav-item .nextshow{min-height:50px}
  .reference-v2 .mbnav-quote{display:none!important}
  .reference-v2.mobile-nav-open{overflow:hidden}
}
@media(max-width:700px){
  body.reference-v2{padding-top:60px}
  .reference-v2 .ref-topbar{display:none}
  .reference-v2 .shell,.reference-v2 .ref-topbar .topbar__inner{width:calc(100% - 32px)}
  .reference-v2 .ref-header,.reference-v2 .ref-header .nav-wrap{height:60px}
  .reference-v2 .ref-header{top:0}
  .reference-v2 .ref-header .brand{left:0;width:220px}
  .reference-v2 .ref-header .brand__logo{width:220px;object-position:left center}
  .reference-v2 .ref-search{width:43px;height:60px;font-size:20px}
  .reference-v2 .menu-toggle{width:42px;height:60px;padding-inline:5px}
  .reference-v2 .menu-toggle i{width:30px;background:#19cbb7}
  .reference-v2 .ref-language{height:60px;padding-left:10px;border-left:0}
  .reference-v2 .ref-language .lang{height:60px;min-width:48px;font-size:13px}
  .reference-v2 .ref-language__menu{top:60px}
  .reference-v2 .mbnav-overlay{inset:60px 0 0}
  .reference-v2 .mbnav-wp{top:60px;width:100%}
  .reference-v2 .mbnav-item>a{padding-left:20px}
  .reference-v2 .ref-hero{height:500px;min-height:500px}
  .reference-v2 .ref-hero__slide{background:linear-gradient(90deg,rgba(7,9,9,.65),rgba(7,9,9,.22)),var(--hero) 57% center/cover no-repeat}
  .reference-v2 .ref-hero__content{width:calc(100% - 36px);padding-left:0;transform:translateY(-20px)}
  .reference-v2 .ref-hero__content h1{max-width:330px;font-size:30px;line-height:1.3}
  .reference-v2 .ref-hero__content>p{max-width:320px;margin:15px 0 27px;font-size:16px}
  .reference-v2 .ref-side-tools{display:none}
  .reference-v2 .ref-contact-popover{right:96px;width:min(280px,calc(100vw - 120px))}
  .reference-v2 .floating-quote{right:18px;bottom:18px;width:54px;height:54px;font-size:24px}
}

.news-framework-hero{padding:105px 0 92px;background:#1c2122;color:#fff;border-bottom:1px solid #303737}
.news-framework-hero .shell{max-width:1400px}
.news-framework-hero p{margin:0 0 16px;color:var(--ref-teal);font-size:12px;font-weight:800;letter-spacing:.2em}
.news-framework-hero h1{max-width:760px;margin:0;font:700 clamp(38px,4.2vw,64px)/1.12 Georgia,"Microsoft YaHei",serif}
.news-framework-hero span{display:block;max-width:690px;margin-top:24px;color:#adb7b5;font-size:16px;line-height:1.8}
.news-framework{padding:82px 0 105px;background:#f5f7f6}
.news-framework__tabs{display:flex;gap:42px;padding-bottom:22px;border-bottom:1px solid #ccd5d2}
.news-framework__tabs button{padding:0 0 12px;border:0;border-bottom:3px solid transparent;background:none;color:#5c6764;font-size:15px;cursor:pointer}
.news-framework__tabs button.active{border-color:var(--ref-teal);color:var(--ref-teal);font-weight:700}
.news-framework__list{margin-top:22px;border-top:1px solid #dbe1df}
.news-framework__list article{display:grid;grid-template-columns:160px 1fr auto;gap:42px;align-items:center;min-height:150px;border-bottom:1px solid #dbe1df}
.news-framework__list time{color:var(--ref-teal);font:700 13px Georgia,serif;letter-spacing:.06em}
.news-framework__list h2{margin:0 0 9px;font:700 24px/1.35 Georgia,"Microsoft YaHei",serif}
.news-framework__list p{margin:0;color:#687270;font-size:14px;line-height:1.7}
.news-framework__list a{color:var(--ref-teal);font-size:20px;text-decoration:none}
@media(max-width:700px){.news-framework-hero{padding:70px 0 62px}.news-framework{padding:55px 0 75px}.news-framework__tabs{gap:24px;overflow:auto}.news-framework__list article{grid-template-columns:1fr auto;gap:10px;padding:25px 0}.news-framework__list time{grid-column:1/-1}.news-framework__list h2{font-size:20px}.news-framework__list p{display:none}}
.ref-cert-grid.ref-cert-grid--images{grid-template-columns:repeat(3,minmax(0,1fr));border:0}
.ref-cert-grid.ref-cert-grid--images .ref-cert-card__image{height:255px;border:0!important;background:#f7f3e8}
@media(max-width:900px){.ref-cert-grid.ref-cert-grid--images{grid-template-columns:repeat(2,minmax(0,1fr))}.ref-cert-grid.ref-cert-grid--images .ref-cert-card__image{height:230px}}
@media(max-width:620px){.ref-cert-grid.ref-cert-grid--images{grid-template-columns:1fr}.ref-cert-grid.ref-cert-grid--images .ref-cert-card__image{height:260px}}

/* Keep the product menu grid stable before its enhancement stylesheet loads. */
.reference-v2 .product-mega-menu__inner{width:min(1040px,calc(100vw - 120px));margin:0 auto;margin-left:max(28px,calc((100vw - min(1040px,calc(100vw - 120px))) / 2 - 70px));margin-right:auto;padding:20px 4px 24px;display:grid!important;grid-template-columns:repeat(3,minmax(0,1fr))!important;gap:clamp(24px,4.2vw,58px);justify-items:start}