/* ALTROVIA — immersive editorial presentation. Brand colors retained. */
:root{--background:#101211;--surface:#1b1e1c;--deep:#080a09;--muted:#b9bfba;--line:#353c36;--gold:#b5a07d;--gold-light:#e1cfb0;--ink:#f5f5f2;--max:1400px}
body{background:var(--background)}h1,h2,h3{font-weight:500;letter-spacing:-.045em}.site-header{background:rgba(16,18,17,.84);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom:1px solid rgba(255,255,255,.07)}
.header-inner{min-height:88px}.brand{width:205px}.brand-tagline{font-size:.7rem}.header-quote,.submit-button{border-radius:40px}.desktop-nav{letter-spacing:0;gap:26px}.languages{font-size:.8rem}
.hero{padding-top:90px;position:relative;overflow:hidden}.hero-intro{display:block;text-align:center;padding-bottom:65px}.hero-title .eyebrow{justify-content:center}.hero-title h1{font-size:clamp(3.8rem,7.7vw,8rem);line-height:1.03;font-weight:500;letter-spacing:-.055em}.hero-title h1 br{display:none}.hero-title h1>span{display:block}.hero-summary{max-width:670px;margin:28px auto 0;padding:0}.hero-summary>p{font-size:1.15rem;line-height:1.7}.hero-summary .text-link{display:inline-flex;margin:0 14px;padding:8px 0;gap:18px;font-size:.95rem}.hero-visual{width:calc(100% - 48px);max-width:1800px}.image-frame{border:0;border-radius:32px;aspect-ratio:2.15}.visual-label{bottom:34px;left:40px}.visual-label>span:first-child{font-size:2rem}.supply-strip{max-width:1100px;margin:0 auto;position:relative;padding:30px 0 0;border:0}.supply-strip>div{justify-content:center}.supply-strip>div:not(:first-child){padding-left:20px}.products{padding-top:130px}.product-row{border-radius:22px;margin-bottom:18px;border:1px solid var(--line)}.product-featured{background:#202622;box-shadow:none}.product-thumb{border-radius:14px}.about-visual img,.home-news-card{border-radius:22px}.positioning-grid article{border-radius:18px}.professional-links{gap:24px}
/* OEM range page */
.oem-hero{width:100%;max-width:none;min-height:810px;padding:130px max(40px,calc((100vw - 1160px)/2)) 110px;display:flex;flex-direction:column;align-items:center;text-align:center;justify-content:center;background:linear-gradient(180deg,rgba(8,10,9,.7),rgba(8,10,9,.6) 60%,#101211),url('https://cdn.openart.ai/openart-ai/production/2026-10/create-image/i2Z06DevGham8rbKvCtj/image_1793299068730_5dc00b98_1793299070286_1be1b684.png') center/cover,url('/assets/architecture-poster.webp') center/cover}
.oem-hero .eyebrow{justify-content:center;font-size:.75rem;color:#e1cfb0}.oem-hero h1{font-size:clamp(3.5rem,7.8vw,7.5rem);line-height:1.04;font-weight:500;max-width:1200px;letter-spacing:-.06em}.oem-heading-accent{color:#e1cfb0}.oem-hero-copy{max-width:690px;font-size:1.15rem;line-height:1.7;color:#f0f0eb}.oem-hero-actions{justify-content:center}.oem-button,.vision-pill{border-radius:999px;background:#e6d7bd;color:#191c19;min-height:46px;padding:13px 24px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;font-size:.9rem;font-weight:500;gap:10px}.oem-audience{color:#d0d3ce}.oem-products{padding-top:85px;padding-bottom:100px}.oem-section-heading h2{font-size:clamp(2.5rem,4.6vw,4.8rem);letter-spacing:-.045em}.oem-family-nav a{border-radius:18px;background:rgba(255,255,255,.035);padding:18px 22px}.oem-product-grid{gap:26px;margin-top:36px}.oem-product-card{border-radius:30px;background:#191e1a;border:1px solid #353e36;--ink:#f5f5f2;--muted:#b9bfba;--gold-light:#e1cfb0;--line:#353c36;color:var(--ink);box-shadow:0 20px 60px rgba(0,0,0,.16)}.oem-product-visual{background:#101411;aspect-ratio:1.32;padding:12px}.oem-product-visual img{mix-blend-mode:normal}.oem-product-content{padding:35px 38px 30px}.oem-product-card h3{font-weight:500;font-size:clamp(1.9rem,2.6vw,2.8rem)}.oem-product-description{font-size:1rem}.oem-code{border-color:#b8aa91}.vision-spec-link{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:48px;color:#604a28;font-weight:600;border-bottom:1px solid #d9ded7;margin-bottom:2px}.vision-spec-link:hover{text-decoration:underline;text-underline-offset:5px}.oem-card-link{border:0;font-size:.85rem;min-height:40px;padding-top:10px}.oem-process{padding-block:100px;background:#080a09}.oem-steps article{border-radius:20px;background:#161a17;padding:32px;border:1px solid var(--line)}.oem-step-number{font-size:2.2rem}.oem-contact{padding-block:100px}.oem-contact>.enquiry-form{margin-top:36px;border-radius:24px;padding:40px;background:#181d19}.oem-contact input,.oem-contact select,.oem-contact textarea{border-radius:10px;background:#101511}.oem-contact .submit-button{border-radius:50px}
/* Detailed product pages */
.vision-product-nav{position:sticky;top:88px;z-index:15;display:flex;align-items:center;gap:28px;justify-content:flex-end;padding:12px max(24px,calc((100vw - 1288px)/2));background:rgba(23,28,24,.86);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom:1px solid #41483f;font-size:.8rem}.vision-product-nav>a:first-child{margin-right:auto;color:#c7ccc5}.vision-product-nav strong{color:var(--gold-light);font-size:1rem}.vision-product-nav .vision-pill{padding:8px 18px;min-height:38px;font-size:.8rem}.vision-detail-hero{text-align:center;padding-top:86px}.vision-detail-hero .eyebrow{justify-content:center;margin-bottom:22px}.vision-detail-hero h1{font-size:clamp(3rem,6.8vw,6.5rem);line-height:1.05;font-weight:500;max-width:1050px;margin:auto}.vision-detail-name{font-size:1.5rem;color:var(--gold-light);margin:24px 0 15px}.vision-intro{max-width:700px;margin:0 auto 28px;font-size:1.1rem;line-height:1.8;color:var(--muted)}.vision-product-stage{background:radial-gradient(ellipse at center,#28342b 20%,#101411);border-radius:36px;margin:56px 0 0;overflow:hidden;position:relative;min-height:400px}.vision-product-stage img{display:block;width:100%;height:min(60vw,650px);object-fit:contain;mix-blend-mode:normal;padding:30px 50px 60px}.vision-product-stage figcaption{position:absolute;bottom:18px;left:24px;right:24px;color:#4d554f;font-size:.72rem;margin:0}.vision-highlights{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px;padding:48px 0 60px;border-bottom:1px solid var(--line)}.vision-highlights>div{display:flex;flex-direction:column;gap:12px;min-width:0}.vision-highlights small{color:var(--muted);font-size:.85rem}.vision-highlights strong{font-family:var(--font-display);font-size:clamp(1.2rem,2.4vw,2.2rem);font-weight:450;line-height:1.25}.vision-story{padding-block:100px;max-width:1080px}.vision-story h2{font-size:clamp(2.5rem,4.5vw,4.6rem);line-height:1.12;max-width:950px;margin:0 0 28px}.vision-story>p:last-child{max-width:700px;color:var(--muted);font-size:1.13rem;line-height:1.8}.vision-specs{padding-block:80px 100px;border-top:1px solid var(--line);scroll-margin-top:175px}.vision-specs h2{font-size:clamp(2.4rem,4.4vw,4.4rem);margin:0 0 25px;line-height:1.13}.vision-source-note{font-size:.82rem;line-height:1.8;color:var(--muted);max-width:1000px;margin:18px 0 32px}.model-selector{display:flex;flex-wrap:wrap;gap:8px;border-radius:24px;padding:7px;background:#222a23;width:fit-content;margin:36px 0 30px;max-width:100%}.model-selector[hidden],.spec-model[hidden]{display:none}.model-option{padding:12px 22px;color:#c9cfc7;background:transparent;border:1px solid transparent;border-radius:20px;font-size:.86rem;min-height:44px}.model-option[aria-pressed=true]{background:#e8ddc9;color:#20271f;box-shadow:0 3px 16px #0004}.model-option:hover{border-color:#b5a07d}.spec-model{background:#1b211c;border:1px solid #3d473d;border-radius:28px;padding:35px 40px;margin-bottom:24px}.spec-model h3{font-size:1.8rem;color:#e3d4bb;margin:0 0 26px}.spec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px 40px;margin:0}.spec-grid>div{border-top:1px solid #3e493f;padding-top:16px;min-width:0}.spec-grid dt{font-size:.78rem;color:#b9c1b8;line-height:1.6;margin-bottom:11px}.spec-grid dd{font-family:var(--font-display);font-size:1.5rem;line-height:1.4;margin:0;color:#f4f6f1;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.vision-comparison{border-bottom:1px solid var(--line);padding-block:18px}.vision-comparison summary{display:flex;align-items:center;justify-content:space-between;gap:20px;cursor:pointer;font-size:1.1rem;list-style:none;padding:12px 0}.vision-comparison summary::-webkit-details-marker{display:none}.vision-comparison summary>span{color:var(--gold-light);font-size:1.6rem}.vision-comparison[open] summary>span{transform:rotate(45deg)}.vision-comparison>p{max-width:900px;line-height:1.85;color:var(--muted)}.vision-table-scroll{overflow:auto;margin-block:22px;border:1px solid #3d473d;border-radius:14px}.vision-table-scroll table{width:100%;border-collapse:collapse;min-width:650px;font-size:.85rem;text-align:left}.vision-table-scroll caption{text-align:left;color:var(--muted);padding:20px}.vision-table-scroll th,.vision-table-scroll td{padding:17px 20px;border-bottom:1px solid #353c36;line-height:1.6}.vision-table-scroll thead{background:#273027;color:#e3d4bb}.vision-table-scroll tbody th{font-weight:400;color:#c8cfc7;max-width:250px}.vision-table-scroll td{white-space:nowrap}.vision-brand-story{min-height:640px;display:flex;align-items:center;background:linear-gradient(90deg,rgba(8,10,9,.8),rgba(8,10,9,.38)),url('https://cdn.openart.ai/openart-ai/production/2026-10/create-image/i2Z06DevGham8rbKvCtj/image_1793299090484_0528478d_1793299091348_0500644c.png') center/cover,radial-gradient(ellipse at 90% 20%,#6b604c,#17251c 65%,#080a09);padding-block:100px}.vision-brand-story h2{white-space:pre-line;font-size:clamp(3rem,5.5vw,5.7rem);line-height:1.05;margin:0 0 30px}.vision-brand-story p:not(.eyebrow){max-width:580px;font-size:1.1rem;line-height:1.8;color:#e0e5dd;margin-bottom:32px}.vision-related{padding-bottom:90px}.vision-related h2{font-size:2.5rem}.vision-related>a{display:flex;gap:30px;align-items:center;padding:25px 5px;border-top:1px solid var(--line);font-size:1.1rem}.vision-related>a>span:first-child{color:var(--gold-light);min-width:90px;font-size:.85rem}.vision-related>a>span:last-child{margin-left:auto}.vision-related a:hover{color:var(--gold-light)}
.vision-enter{animation:vision-rise .8s ease-out both}@keyframes vision-rise{from{opacity:.55;transform:translateY(18px)}to{opacity:1;transform:none}}
@media(min-width:1381px){.vision-product-nav{top:88px}}
@media(max-width:1100px){.vision-product-nav{top:90px}.vision-product-nav{gap:18px}.spec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.oem-hero{min-height:740px;padding-inline:45px}.hero-title h1{font-size:clamp(3.7rem,8vw,6rem)}}
@media(max-width:700px){.wrap,.header-inner{width:calc(100% - 40px)}.header-inner{min-height:82px}.brand{width:175px}.brand-tagline{font-size:.65rem}.hero{padding-top:55px}.hero-title h1{font-size:clamp(3.4rem,11vw,5rem)}.hero-intro{padding-bottom:38px}.hero-summary>p{font-size:1rem}.hero-summary .text-link{display:flex;max-width:340px;margin:12px auto}.hero-visual{width:calc(100% - 24px)}.image-frame{aspect-ratio:1.1;border-radius:24px}.visual-label{bottom:24px;left:22px;right:22px}.visual-label>span:first-child{font-size:1.5rem}.visual-small{display:none}.supply-strip{gap:18px;display:flex;flex-direction:column;padding-top:24px}.supply-strip>div:not(:first-child){border:0;padding-left:0}.products{padding-top:75px}.oem-hero{min-height:690px;padding:80px 24px}.oem-hero h1{font-size:clamp(3.2rem,12vw,5rem)}.oem-hero-copy{font-size:1rem}.oem-hero-actions{flex-direction:column}.oem-products{padding-block:60px}.oem-product-card{border-radius:24px}.oem-product-content{padding:28px 26px}.oem-product-visual{aspect-ratio:1.2}.oem-process{padding-block:65px}.oem-contact{padding-block:65px}.oem-contact>.enquiry-form{padding:25px 18px}.oem-family-nav a{padding:16px}.vision-product-nav{top:82px;padding:10px 16px;gap:13px;font-size:.72rem}.vision-product-nav strong{display:none}.vision-product-nav .vision-pill{font-size:.72rem;padding:8px 12px}.vision-detail-hero{padding-top:60px}.vision-detail-hero h1{font-size:clamp(3rem,11vw,4rem)}.vision-detail-name{font-size:1.25rem}.vision-intro{font-size:1rem}.vision-product-stage{border-radius:24px;margin-top:36px;min-height:0}.vision-product-stage img{height:440px;padding:10px 12px 65px}.vision-highlights{grid-template-columns:1fr;gap:25px;padding-block:30px}.vision-highlights>div{gap:7px}.vision-highlights strong{font-size:1.5rem}.vision-story{padding-block:65px}.vision-specs{padding-block:60px;scroll-margin-top:150px}.model-selector{gap:4px;padding:6px;border-radius:18px}.model-option{padding:11px 15px;font-size:.78rem}.spec-model{padding:24px 20px;border-radius:24px}.spec-grid{gap:24px 18px}.spec-grid dd{font-size:1.17rem}.spec-grid dt{font-size:.73rem}.vision-brand-story{min-height:560px;padding-block:70px}.vision-brand-story p:not(.eyebrow){font-size:1rem}.vision-related>a{gap:15px;font-size:.95rem}.vision-related>a>span:first-child{min-width:66px}.vision-comparison summary{font-size:1rem}.vision-source-note{font-size:.78rem}.vision-related{padding-bottom:60px}}
@media(max-width:400px){.vision-product-nav{gap:9px}.vision-product-nav>a:first-child{max-width:100px}.spec-grid{grid-template-columns:1fr}.vision-product-stage img{height:340px}.oem-hero h1{font-size:3.25rem}}
@media(prefers-reduced-motion:reduce){.vision-enter{animation:none}html{scroll-behavior:auto}}
@media print{.site-header,.vision-product-nav,.oem-contact,.vision-brand-story,.professional-links,.site-footer,.model-selector{display:none!important}.vision-product{color:#111;background:#fff}.spec-model[hidden]{display:block}.spec-model,.spec-grid dd,.spec-grid dt,.vision-source-note{color:#111;background:#fff}.vision-product-stage img{height:220px}.vision-detail-hero{padding-top:0}.vision-specs{padding-top:20px}.spec-model{break-inside:avoid}}

@media(max-width:700px){.header-inner{gap:12px;flex-wrap:nowrap}.header-actions{gap:8px}.languages{gap:1px}.language{padding-inline:2px;font-size:.78rem}.menu-toggle{width:40px}}
@media(max-width:400px){.brand{width:155px}}

/* HVAC belongs to Our sectors. All product surfaces use the dark brand palette. */
.hvac-sector{margin:0 0 76px;scroll-margin-top:120px}
.hvac-sector-heading{max-width:820px;margin-bottom:38px}
.hvac-sector-heading h3{font-size:clamp(2.5rem,4.9vw,5rem);line-height:1.08;margin:0 0 24px}
.hvac-sector-heading>p:last-child{max-width:710px;font-size:1.1rem;line-height:1.8;color:var(--muted)}
.sector-lifestyle{position:relative;margin:0;overflow:hidden;border-radius:24px;background:#171a18}
.sector-lifestyle img{display:block;width:100%;height:auto;aspect-ratio:16/8;object-fit:cover}
.sector-lifestyle:after{content:"";position:absolute;inset:40% 0 0;background:linear-gradient(transparent,#070a09d9);pointer-events:none}
.sector-lifestyle figcaption{position:absolute;bottom:35px;left:38px;right:28px;z-index:1;display:flex;flex-direction:column;gap:12px;font-size:clamp(1.7rem,3.5vw,3rem);letter-spacing:-.03em}
.sector-lifestyle figcaption span{font-size:.75rem;letter-spacing:.12em;color:var(--gold-light)}
.sector-family-nav{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0 35px}
.sector-family-nav a{padding:12px 18px;border:1px solid #444c44;border-radius:50px;font-size:.85rem;color:#e2e7df;min-height:44px;display:flex;align-items:center}
.sector-family-nav a:hover{background:#2b322c;border-color:var(--gold)}
.sector-family-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}
.sector-family{min-width:0;overflow:hidden;background:#191e1a;border:1px solid #353e36;border-radius:24px;scroll-margin-top:115px}
.sector-family-photo{margin:0;background:#101411}
.sector-family-photo img{display:block;width:100%;height:auto;aspect-ratio:16/10;object-fit:cover}
.sector-family-copy{padding:30px}
.sector-family-copy>.eyebrow{margin:0 0 14px;color:var(--gold-light)}
.sector-family-copy>h4{font-size:clamp(1.7rem,2.6vw,2.6rem);font-weight:450;line-height:1.15;letter-spacing:-.035em;margin:0 0 18px}
.sector-family-copy>p:not(.eyebrow){font-size:.96rem;line-height:1.8;color:var(--muted);margin:0 0 22px}
.sector-family-meta{display:flex;flex-wrap:wrap;gap:8px 20px;color:#dfd4be;font-size:.82rem;line-height:1.7;margin:0 0 24px}
.sector-family-copy>.text-link{font-size:.87rem;max-width:330px;margin:0 0 20px;padding:10px 0}
.sector-specs{border-top:1px solid #414a41}
.sector-specs>summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:.95rem;min-height:64px;color:#f0f3ec}
.sector-specs>summary::-webkit-details-marker{display:none}
.sector-specs>summary>span{font-size:1.6rem;color:var(--gold-light)}
.sector-specs[open]>summary>span{transform:rotate(45deg)}
.sector-family:has(.sector-specs[open]){grid-column:1/-1}
.sector-family:has(.sector-specs[open])>.sector-family-photo img{aspect-ratio:2.5;object-fit:contain;background:#101411}
.sector-specs .vision-specs{padding:25px 0 0;border-top:0;max-width:none;width:100%}
.sector-specs .vision-specs>h4{font-size:clamp(1.8rem,3.5vw,3rem);font-weight:450;letter-spacing:-.035em;margin:0 0 22px}
.sector-specs .spec-model h5{font-size:1.5rem;font-weight:500;margin:0 0 24px;color:var(--gold-light)}
.sector-specs .vision-source-note{font-size:.78rem}
.sector-image-note{font-size:.75rem;line-height:1.8;color:var(--muted);margin:22px 0 45px;max-width:850px}
.sector-oem{padding:36px;border:1px solid #3a443b;background:#171d18;border-radius:24px}
.sector-oem h4{font-size:clamp(1.9rem,3.2vw,3rem);font-weight:450;letter-spacing:-.04em;margin:0 0 22px}
.sector-oem>div>p:last-child{max-width:700px;line-height:1.8;color:var(--muted)}
.sector-oem .product-enquiry{margin-top:25px}
.sector-oem .enquiry-form{padding-top:26px;background:transparent}
.sector-oem input,.sector-oem select,.sector-oem textarea{background:#101511;border-radius:8px;color:var(--ink)}
.sector-family a:focus-visible,.sector-family-nav a:focus-visible,.sector-specs summary:focus-visible{outline:2px solid var(--gold-light);outline-offset:5px}
@media(max-width:700px){
 .hvac-sector{margin-bottom:50px;scroll-margin-top:100px}
 .sector-lifestyle{border-radius:18px}.sector-lifestyle img{aspect-ratio:4/3}
 .sector-lifestyle figcaption{bottom:22px;left:22px;font-size:1.9rem}
 .sector-family-nav{gap:8px;margin:22px 0}.sector-family-nav a{font-size:.77rem;padding:10px 13px}
 .sector-family-grid{grid-template-columns:minmax(0,1fr);gap:20px}
 .sector-family-copy{padding:24px 20px}.sector-family-copy>h4{font-size:2rem}
 .sector-family:has(.sector-specs[open])>.sector-family-photo img{aspect-ratio:16/10;object-fit:cover}
 .sector-specs .spec-grid{grid-template-columns:minmax(0,1fr)}
 .sector-specs .spec-model{padding:22px 17px}
 .sector-specs .model-selector{margin-top:25px}.sector-oem{padding:25px 20px}
 .sector-image-note{margin-bottom:30px}
}

/* Product photography includes factory-style full branding; never overlay detached marks. */
.qc-montage{display:block;position:relative;overflow:hidden;background:#262724;line-height:0}
.sector-lifestyle .qc-montage>img,.sector-family-photo .qc-montage>img,.sector-family:has(.sector-specs[open])>.sector-family-photo .qc-montage>img{display:block;width:100%;height:auto;aspect-ratio:auto;object-fit:contain}
.sector-family:has(.sector-specs[open])>.sector-family-photo .qc-montage{max-width:900px;margin:auto}
.montage-signature{position:absolute;right:18px;bottom:18px;z-index:2;width:150px;height:42px;border-radius:6px;background:#101411dc url('/assets/altrovia-logo-or-ivoire.png') 12px center/116px auto no-repeat;color:#c7b78d;font:10px/1 Arial,sans-serif;text-align:right;padding:11px 10px;pointer-events:none;box-sizing:border-box}
.hero-visual .image-frame{position:relative}.hero-visual .architecture{filter:none}.montage-note,.trademark-notice{font-size:.75rem;line-height:1.6;color:#a9aaa3}.montage-note{padding:14px 4px}.trademark-notice{padding-top:18px;padding-bottom:24px}.brand{position:relative}.brand-tm{position:absolute;right:-14px;top:0;font-size:11px;color:var(--gold-light)}
@media(max-width:700px){.montage-signature{width:116px;height:32px;background-size:86px auto;right:10px;bottom:10px;padding:8px;font-size:8px}.sector-lifestyle figcaption{font-size:1.4rem;bottom:18px}.sector-lifestyle figcaption span{font-size:.65rem}.brand-tm{right:-10px;font-size:9px}}