:root{--ink:#111821;--paper:#f4f2ed;--white:#fff;--red:#e6482c;--muted:#6c7379;--line:#d7d7d2;--max:1320px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Manrope,Arial,sans-serif;font-size:16px;line-height:1.6}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.site-header{height:96px;max-width:var(--max);margin:auto;padding:0 32px;display:flex;align-items:center;justify-content:space-between;position:relative;z-index:20}
.brand{display:flex;align-items:center;gap:15px;line-height:1}
.brand-logo{width:60px;height:60px;object-fit:contain;filter:drop-shadow(0 2px 5px rgba(0,0,0,.12))}
.brand strong,.brand small{display:block;letter-spacing:.14em}
.brand strong{font-size:17px;letter-spacing:.055em}
.brand small{font-size:11px;margin-top:6px;color:var(--muted);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:32px;font-size:14px;font-weight:700}
.main-nav>a:not(.nav-cta){position:relative}
.main-nav>a:not(.nav-cta):after{content:"";position:absolute;left:0;right:100%;bottom:-6px;height:2px;background:var(--red);transition:.25s}
.main-nav>a:hover:after{right:0}
.nav-cta{background:var(--ink);color:white;padding:13px 18px;border-radius:3px}
.nav-cta span{color:var(--red);margin-left:7px}
.menu-toggle{display:none;border:0;background:none;padding:10px}
.menu-toggle span{display:block;width:25px;height:2px;background:var(--ink);margin:6px}
.hero{max-width:var(--max);min-height:calc(100vh - 96px);margin:auto;padding:42px 32px 72px;display:grid;grid-template-columns:.92fr 1.08fr;align-items:center;gap:52px}
.eyebrow{margin:0 0 22px;text-transform:uppercase;letter-spacing:.15em;font-size:12px;font-weight:800}
.eyebrow span{display:inline-block;width:34px;height:2px;background:var(--red);vertical-align:middle;margin-right:12px}
.hero h1,.section h2,.calculator-banner h2,.contact h2{font:700 clamp(50px,6.6vw,98px)/.93 Space Grotesk;margin:0;letter-spacing:-.055em}
.hero h1 em,.contact h2 em{color:var(--red);font-style:normal}
.hero-lead{max-width:590px;font-size:18px;color:#535b62;margin:30px 0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;justify-content:center;gap:34px;min-height:52px;padding:0 22px;font-size:14px;font-weight:800;border:1px solid var(--ink);border-radius:3px;transition:.25s}
.button:hover{transform:translateY(-2px)}
.button.primary{background:var(--red);border-color:var(--red);color:white}
.button.ghost{background:transparent}
.hero-meta{display:flex;gap:56px;margin-top:54px;padding-top:24px;border-top:1px solid var(--line)}
.hero-meta strong,.hero-meta span{display:block}
.hero-meta strong{font-size:12px;letter-spacing:.08em}
.hero-meta span{font-size:12px;color:var(--muted);margin-top:4px}
.hero-visual{height:min(680px,75vh);position:relative;background:#ebeae7;overflow:hidden;border-radius:3px}
.hero-visual img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-visual.hero-door img{object-position:center center}
.hero-number{position:absolute;z-index:2;top:22px;right:25px;font:700 13px Space Grotesk}
.floating-card{position:absolute;left:24px;bottom:24px;background:rgba(17,24,33,.93);color:white;padding:18px 22px;min-width:230px}
.floating-card span,.floating-card strong{display:block}
.floating-card span{font-size:10px;color:#aab0b5;text-transform:uppercase;letter-spacing:.13em}
.floating-card strong{font:600 18px Space Grotesk;margin-top:5px}
.intro-strip{background:var(--ink);color:white;min-height:74px;display:flex;align-items:center;justify-content:center;gap:34px;padding:18px 32px;overflow:hidden}
.intro-strip p{margin:0;white-space:nowrap;text-transform:uppercase;letter-spacing:.13em;font-size:12px;font-weight:700}
.intro-strip span{color:var(--red);font-size:9px}
.brand-strip{max-width:var(--max);margin:auto;padding:64px 32px 30px}
.brand-strip-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:28px}
.brand-strip-head .eyebrow{margin:0}
.brand-strip-head h2{font:600 25px Space Grotesk;margin:0;letter-spacing:-.02em}
.brand-rail{display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.supplier-logo{height:145px;display:flex;align-items:center;justify-content:center;padding:22px;position:relative;background:rgba(255,255,255,.55);border-right:1px solid var(--line);transition:background .25s,transform .25s}
.supplier-logo:last-child{border-right:0}
.supplier-logo:hover{background:white;transform:translateY(-3px)}
.supplier-logo img{width:100%;height:78px;object-fit:contain;mix-blend-mode:multiply}
.supplier-logo span{position:absolute;left:12px;bottom:9px;font-size:10px;text-transform:uppercase;letter-spacing:.13em;color:#8a9094;font-weight:800}
.section{max-width:var(--max);margin:auto;padding:130px 32px}
.section-heading{display:grid;grid-template-columns:1.35fr .65fr;align-items:end;gap:80px;margin-bottom:60px}
.section-heading h2,.about h2{font-size:clamp(42px,5vw,72px)}
.section-heading>p{max-width:460px;color:var(--muted);margin:0}
.category-grid{display:grid;grid-template-columns:1.2fr .8fr;grid-template-rows:330px 330px;gap:18px}
.category-card{position:relative;overflow:hidden;background:#ddd}
.category-card.large{grid-row:1/3}
.category-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.category-card:hover img{transform:scale(1.035)}
.card-shade{position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(9,13,18,.88))}
.card-copy{position:absolute;left:0;right:0;bottom:0;padding:28px;color:white}
.card-copy>span{font:700 11px Space Grotesk;color:var(--red)}
.card-copy h3{font:600 clamp(22px,2.5vw,36px) Space Grotesk;margin:7px 0 4px}
.card-copy p{margin:0;color:#c6c9cb;font-size:14px}
.catalog-section{background:var(--ink);color:white;padding:120px max(32px,calc((100vw - var(--max))/2 + 32px))}
.catalog-head{display:grid;grid-template-columns:1.1fr .9fr;gap:80px;align-items:end}
.catalog-head h2{font:700 clamp(46px,5.7vw,78px)/.96 Space Grotesk;margin:0;letter-spacing:-.05em}
.catalog-search{max-width:520px;margin-left:auto;width:100%}
.catalog-search label{display:block;font-size:14px;font-weight:700;margin-bottom:10px;color:#aeb4b9}
.search-box{display:flex;align-items:center;background:white;border-radius:3px}
.search-box input{width:100%;min-height:58px;border:0;background:transparent;padding:0 18px;font:500 16px Manrope;color:var(--ink);outline:none}
.search-box:focus-within{box-shadow:0 0 0 3px rgba(230,72,44,.7)}
.search-box span{color:var(--red);font-size:25px;padding:0 18px}
.filter-row{display:flex;gap:10px;overflow-x:auto;padding:46px 0 18px;scrollbar-width:thin}
.filter-button{flex:0 0 auto;background:transparent;color:#c6cbd0;border:1px solid #3a434c;border-radius:99px;padding:10px 17px;font:700 14px Manrope;cursor:pointer}
.filter-button:hover,.filter-button.active{background:var(--red);border-color:var(--red);color:white}
.catalog-count{font-size:13px;color:#8f989f;margin:4px 0 24px}
.catalog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.catalog-card{background:#18212b;border:1px solid #28333e;padding:26px;min-height:245px;display:flex;flex-direction:column;transition:.25s}
.catalog-card:hover{transform:translateY(-4px);border-color:#59636d}
.catalog-card-top{display:flex;justify-content:space-between;gap:20px;align-items:start}
.catalog-card .catalog-tag{color:var(--red);font-size:12px;text-transform:uppercase;letter-spacing:.13em;font-weight:800}
.catalog-card .catalog-index{font:600 12px Space Grotesk;color:#68737c}
.catalog-card h3{font:600 23px/1.15 Space Grotesk;margin:25px 0 14px}
.model-list{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}
.model-list span{font-size:12px;color:#bac0c5;border:1px solid #35414b;padding:5px 8px;border-radius:2px}
.empty-state{padding:60px 20px;text-align:center;background:#18212b}
.empty-state strong,.empty-state span{display:block}
.empty-state span{color:#90989e;margin-top:5px}
.catalog-card{cursor:pointer;text-align:left;color:white;font-family:inherit}
.catalog-card .open-category{display:flex;align-items:center;justify-content:space-between;margin-top:22px;padding-top:14px;border-top:1px solid #303c47;color:white;font-size:13px;font-weight:800}
.catalog-card .open-category b{color:var(--red);font-size:18px}
.category-view{position:fixed;inset:0;z-index:100;background:var(--paper);overflow-y:auto;padding:26px max(24px,calc((100vw - var(--max))/2 + 32px)) 80px}
.category-view[hidden]{display:none}
.category-view-bar{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:20px}
.back-button,.close-button{border:0;background:transparent;color:var(--ink);font:800 14px Manrope;cursor:pointer}
.close-button{width:44px;height:44px;border-radius:50%;background:var(--ink);color:white;font-size:27px;line-height:1}
.category-view-head{padding:72px 0 44px;display:grid;grid-template-columns:1fr .45fr;column-gap:60px;align-items:end}
.category-view-head .eyebrow{grid-column:1/-1}
.category-view-head h2{font:700 clamp(44px,6vw,80px)/.95 Space Grotesk;letter-spacing:-.05em;margin:0}
.category-view-head>p:last-child{color:var(--muted);margin:0;font-size:17px}
.category-products{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.detail-product{background:white;min-width:0}
.detail-image{aspect-ratio:4/3;background:#eee;overflow:hidden;display:grid;place-items:center}
.detail-image img{width:100%;height:100%;object-fit:contain;transition:transform .45s}
.detail-product:hover .detail-image img{transform:scale(1.045)}
.detail-image.no-image{background:#e8e7e3;color:#8b9094;font-size:13px}
.detail-copy{padding:19px 20px 22px}
.detail-copy span{display:block;color:var(--red);text-transform:uppercase;letter-spacing:.12em;font-size:11px;font-weight:800}
.detail-copy h3{font:600 20px Space Grotesk;margin:4px 0 0}
body.category-open{overflow:hidden}
.products{padding-top:90px}
.section-heading.compact{margin-bottom:45px}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.product-card{background:white;padding-bottom:23px}
.product-image{height:295px;background:#f8f8f7;display:grid;place-items:center;overflow:hidden;margin-bottom:18px}
.product-image img{width:100%;height:100%;object-fit:contain;transition:transform .5s}
.product-card:hover img{transform:scale(1.06)}
.product-card>span,.product-card h3,.product-card p{margin-left:20px;margin-right:20px}
.product-card>span{font-size:10px;text-transform:uppercase;letter-spacing:.13em;color:var(--red);font-weight:800}
.product-card h3{font:600 20px Space Grotesk;margin-top:2px;margin-bottom:0}
.product-card p{font-size:13px;color:var(--muted);margin-top:2px;margin-bottom:0}
.calculator-banner{max-width:calc(var(--max) - 64px);min-height:430px;margin:30px auto 0;padding:70px;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:80px;background:var(--red);color:white;position:relative;overflow:hidden}
.calculator-banner h2{font-size:clamp(44px,5.5vw,75px)}
.eyebrow.light span{background:white}
.calculator-copy{position:relative;z-index:2}
.calculator-copy p{font-size:18px;max-width:430px;margin:0 0 30px}
.button.white{background:white;color:var(--ink);border-color:white}
.calc-lines{position:absolute;inset:0;opacity:.14;transform:rotate(-14deg) scale(1.3)}
.calc-lines i{display:block;height:1px;background:white;margin-top:80px}
.about{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px;align-items:center}
.about-image{position:relative;background:white;padding:35px}
.about-image img{width:100%;aspect-ratio:1/1;object-fit:contain}
.about-image>span{position:absolute;right:-32px;bottom:50px;background:var(--ink);color:white;padding:10px 16px;font:700 11px Space Grotesk;letter-spacing:.1em;transform:rotate(-90deg)}
.about-copy>p:not(.eyebrow){font-size:18px;color:var(--muted);max-width:680px;margin:30px 0}
.about-points{border-top:1px solid var(--line)}
.about-points div{display:flex;gap:20px;padding:15px 0;border-bottom:1px solid var(--line)}
.about-points b{color:var(--red);font-size:11px}
.about-points span{font-weight:700}
.contact{background:var(--ink);color:white;padding:110px max(32px,calc((100vw - var(--max))/2 + 32px)) 70px}
.contact-top{display:grid;grid-template-columns:.4fr 1.6fr;align-items:start}
.contact h2{font-size:clamp(55px,7vw,100px)}
.contact-details{display:grid;grid-template-columns:1fr 1fr 1fr;gap:50px;margin:90px 0 0 25%;padding-top:30px;border-top:1px solid #39414a}
.contact-details span,.contact-details strong,.contact-details a{display:block}
.contact-details span{font-size:10px;text-transform:uppercase;color:#858d94;letter-spacing:.14em;margin-bottom:10px}
.contact-details strong,.contact-details a{font-size:15px}
.contact-details.branches{grid-template-columns:repeat(4,1fr);margin-left:0}
.contact-details.branches a{font-size:13px;color:#b3bac0;margin-top:5px}
.contact-details a:hover{color:var(--red)}
footer{background:#0a1017;color:#b3b8bc;display:flex;align-items:center;justify-content:space-between;gap:30px;padding:35px max(32px,calc((100vw - var(--max))/2 + 32px));font-size:12px}
footer p{margin:0}
.footer-brand{color:white}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .75s ease,transform .75s ease}
.reveal.visible{opacity:1;transform:none}

@media(max-width:960px){.site-header{height:76px;padding:0 20px}
.brand{gap:11px}
.brand-logo{width:48px;height:48px}
.brand strong{font-size:14px}
.brand small{font-size:10px;margin-top:4px}
.menu-toggle{display:block}
.main-nav{position:absolute;left:16px;right:16px;top:70px;background:var(--ink);color:white;padding:26px;display:none;flex-direction:column;align-items:stretch;gap:18px}
.main-nav.open{display:flex}
.nav-cta{text-align:center;background:var(--red)}
.hero{grid-template-columns:1fr;padding:50px 20px 60px;gap:45px}
.hero-visual{height:520px}
.brand-rail{grid-template-columns:repeat(3,1fr)}
.supplier-logo:nth-child(3){border-right:0}
.supplier-logo:nth-child(-n+3){border-bottom:1px solid var(--line)}
.section{padding:90px 20px}
.section-heading{grid-template-columns:1fr;gap:25px}
.category-grid{grid-template-columns:1fr 1fr;grid-template-rows:500px 310px}
.category-card.large{grid-column:1/3;grid-row:auto}
.product-grid{grid-template-columns:1fr 1fr}
.catalog-head{grid-template-columns:1fr}
.catalog-search{margin-left:0}
.catalog-grid{grid-template-columns:1fr 1fr}
.category-view-head{grid-template-columns:1fr}
.category-view-head>p:last-child{margin-top:20px}
.category-products{grid-template-columns:1fr 1fr}
.calculator-banner{margin:0 20px;max-width:none;padding:55px 40px;grid-template-columns:1fr;gap:35px}
.about{grid-template-columns:1fr;gap:55px}
.about-image{max-width:600px}
.contact-top{grid-template-columns:1fr;gap:30px}
.contact-details{margin-left:0}
.contact-details.branches{grid-template-columns:1fr 1fr}
.contact{padding-left:20px;padding-right:20px}
footer{padding:30px 20px}
}

@media(max-width:620px){.hero h1{font-size:54px}
.hero-lead{font-size:16px}
.hero-actions .button{width:100%}
.hero-meta{gap:22px;justify-content:space-between}
.hero-visual{height:410px}
.intro-strip{justify-content:flex-start;overflow-x:auto}
.brand-strip{padding:52px 20px 10px}
.brand-strip-head{align-items:flex-start;flex-direction:column;gap:9px}
.brand-rail{display:flex;overflow-x:auto;scroll-snap-type:x mandatory}
.supplier-logo{flex:0 0 68%;height:135px;border-bottom:0!important;scroll-snap-align:start}
.supplier-logo:nth-child(3){border-right:1px solid var(--line)}
.section{padding-top:76px;padding-bottom:76px}
.section-heading h2,.about h2{font-size:43px}
.category-grid{display:block}
.category-card{height:380px;margin-bottom:14px}
.product-grid{grid-template-columns:1fr}
.catalog-section{padding:76px 20px}
.catalog-head h2{font-size:43px}
.catalog-grid{grid-template-columns:1fr}
.catalog-card{min-height:220px}
.category-view{padding:18px 20px 60px}
.category-view-head{padding:48px 0 30px}
.category-view-head h2{font-size:42px}
.category-products{grid-template-columns:1fr}
.product-image{height:330px}
.calculator-banner{margin:0;padding:50px 24px;min-height:520px}
.calculator-banner h2{font-size:45px}
.about-image{padding:18px}
.contact{padding-top:76px}
.contact h2{font-size:54px}
.contact-details{grid-template-columns:1fr;gap:28px;margin-top:60px}
.contact-details.branches{grid-template-columns:1fr}
footer{align-items:flex-start;flex-direction:column}
.footer-brand{margin-bottom:8px}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
.reveal{opacity:1;transform:none;transition:none}
.category-card img,.product-card img{transition:none}
}

.calculator-page-body{background:#f3f3f1;overflow:hidden}
.calculator-page-header{position:relative}
.calculator-page-header .main-nav{margin-left:auto}
.calculator-page-main{height:calc(100vh - 96px);min-height:680px;padding:16px;background:#f3f3f1}
.calculator-frame-shell{width:100%;height:100%;overflow:hidden;background:white;border:1px solid var(--line);border-radius:4px;box-shadow:0 14px 45px rgba(17,24,33,.08)}
.calculator-switcher{height:52px;padding:7px;display:flex;gap:7px;background:#111821;border-bottom:1px solid #303843}.calculator-switcher button{border:1px solid #ffffff38;background:transparent;color:#d9dddf;font:800 13px Manrope;padding:0 18px;cursor:pointer}.calculator-switcher button.active{background:var(--red);border-color:var(--red);color:white}.calculator-frame{display:block;width:100%;height:calc(100% - 52px);border:0;background:white}
.calculator-login{height:100%;display:grid;place-items:center;padding:30px}
.calculator-login[hidden],.calculator-frame-shell[hidden]{display:none}
.calculator-login-card{width:min(100%,480px);background:white;border:1px solid var(--line);padding:42px;box-shadow:0 18px 55px rgba(17,24,33,.1)}
.calculator-login-card h1{font:700 clamp(34px,4vw,50px)/1 Space Grotesk;margin:0 0 18px;letter-spacing:-.04em}
.calculator-login-card>p:not(.eyebrow):not(.login-error){color:var(--muted);margin:0 0 28px}
.calculator-login-card label{display:block;font-size:13px;font-weight:800;margin:16px 0 7px}
.calculator-login-card input{width:100%;height:52px;border:1px solid #c9cbc8;background:#fafaf9;padding:0 14px;font:600 16px Manrope;border-radius:3px;outline:none}
.calculator-login-card input:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(230,72,44,.15)}
.calculator-login-card .button{width:100%;margin-top:22px;cursor:pointer}
.login-error{color:#b42318;background:#fff1ef;border:1px solid #f2c7c1;padding:10px 12px;margin:15px 0 0;font-size:13px;font-weight:700}
@media(max-width:960px){.calculator-page-main{height:calc(100vh - 76px);min-height:640px;padding:8px}.calculator-page-header .main-nav{display:flex;position:static;background:transparent;color:var(--ink);padding:0;flex-direction:row;align-items:center}.calculator-page-header .nav-cta{background:var(--ink)}}
@media(max-width:620px){.calculator-page-header .brand small{display:none}.calculator-page-header .main-nav>a:not(.nav-cta){display:none}.calculator-page-header .nav-cta{padding:11px 13px}.calculator-page-main{padding:0;min-height:600px}.calculator-frame-shell{border:0;border-radius:0;box-shadow:none}.calculator-switcher button{flex:1;padding:0 8px;font-size:11px}.calculator-login{padding:18px}.calculator-login-card{padding:30px 22px}}