:root{--aub:#351126;--aub2:#1d0915;--aub3:#55203f;--gold:#c9a56a;--ivory:#f5efe8;--ink:#241a20}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ivory);color:var(--ink);font-family:Arial,Helvetica,sans-serif}header{height:76px;position:fixed;z-index:50;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;padding:0 5vw;background:rgba(29,9,21,.84);backdrop-filter:blur(14px);border-bottom:1px solid rgba(201,165,106,.25)}.brand{color:#fff;text-decoration:none;font:700 24px Georgia}.brand span{color:var(--gold)}nav{display:flex;gap:26px}nav a{color:#eee;text-decoration:none;font-size:13px;letter-spacing:.08em}.hero{height:100vh;min-height:650px;position:relative;overflow:hidden;background:var(--aub2)}.slides,.slide,.veil{position:absolute;inset:0}.slide{background-size:cover;background-position:center;opacity:0;animation:hero 24s infinite;transform:scale(1.05)}.s1{background-image:url('assets/alpha-stone-hospital-doors.jpg')}.s2{background-image:url('assets/alpha-stone-residential-door.jpg');animation-delay:6s}.s3{background-image:url('https://abudhabicarpet.ae/wp-content/uploads/elementor/thumbs/Marble-Wall-Cladding--r0mbagva3si18xpassvhs1q7wymp4vbn59qa6rnv9s.webp');animation-delay:12s}.s4{background-image:url('https://framerusercontent.com/images/g5aWK65fPQkdz44D7Ae3RUQwMk.png?height=899&width=1749');animation-delay:18s}@keyframes hero{0%{opacity:0;transform:scale(1.05)}8%,25%{opacity:1}33%,100%{opacity:0;transform:scale(1.14)}}.veil{background:linear-gradient(90deg,rgba(29,9,21,.88),rgba(53,17,38,.42) 60%,rgba(29,9,21,.25))}.hero-content{position:absolute;z-index:3;left:7vw;top:50%;transform:translateY(-45%);max-width:850px;color:white}.eyebrow{letter-spacing:.22em;font-size:12px;font-weight:700;color:var(--gold)}h1,h2{font-family:Georgia,'Times New Roman',serif;font-weight:400}h1{font-size:clamp(48px,7vw,94px);line-height:.98;margin:18px 0}h1 em{color:var(--gold);font-weight:400}.hero-content>p:not(.eyebrow){font-size:18px;line-height:1.6;max-width:700px}.actions{display:flex;gap:12px;margin-top:32px}.btn{display:inline-block;padding:14px 20px;text-decoration:none;border-radius:2px;font-size:13px;letter-spacing:.06em}.gold{background:var(--gold);color:var(--aub2)}.glass{color:#fff;border:1px solid rgba(255,255,255,.45);background:rgba(255,255,255,.06)}section:not(.hero){padding:100px 7vw}.intro{text-align:center;max-width:900px;margin:auto}.intro h2,.panel h2,.marble h2,.gallery h2,.contact h2{font-size:clamp(38px,5vw,64px);margin:12px 0 24px}.intro>p:last-child{font-size:18px;line-height:1.8;color:#67565f}.panel{background:var(--aub);color:white;display:grid;grid-template-columns:1fr 1fr;gap:70px}.panel p{line-height:1.8;color:#d9cbd3}.cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}.cards article{min-height:150px;padding:25px;border:1px solid rgba(201,165,106,.28);background:rgba(255,255,255,.04);display:flex;flex-direction:column;justify-content:flex-end}.cards b{font-family:Georgia;font-size:22px;color:var(--gold);margin-bottom:8px}.cards span{font-size:13px;line-height:1.5}.marble{display:grid;grid-template-columns:1.05fr .95fr;padding:0!important;background:#efe5dc}.marble-photo{min-height:680px;background:url('https://images.unsplash.com/photo-1600607687939-ce8a6c25118c?auto=format&fit=crop&w=1400&q=85') center/cover}.marble-copy{padding:100px 7vw 90px 6vw}.marble-copy p{line-height:1.8}.chips{display:flex;flex-wrap:wrap;gap:9px;margin:28px 0}.chips span{border:1px solid #cdb9aa;padding:9px 12px;font-size:12px}.small{font-size:13px;color:#76646d}.stats{background:var(--aub2);color:white;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:center}.stats div{padding:28px;border-right:1px solid rgba(201,165,106,.2)}.stats strong{display:block;font:36px Georgia;color:var(--gold)}.stats span{font-size:12px;letter-spacing:.08em}.gallery{text-align:center}.grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:280px 280px;gap:12px;margin-top:40px}.grid div{background-size:cover;background-position:center}.g1{grid-row:1/3;background-image:url('https://images.unsplash.com/photo-1600566753190-17f0baa2a6c3?auto=format&fit=crop&w=1200&q=85')}.g2{background-image:url('https://images.unsplash.com/photo-1600210492486-724fe5c67fb0?auto=format&fit=crop&w=800&q=85')}.g3{background-image:url('https://images.unsplash.com/photo-1600585154526-990dced4db0d?auto=format&fit=crop&w=800&q=85')}.g4{grid-column:2/4;background-image:url('https://images.unsplash.com/photo-1600607687920-4e2a09cf159d?auto=format&fit=crop&w=1200&q=85')}.contact{background:var(--aub3);color:#fff;display:flex;justify-content:space-between;gap:40px;align-items:end}.contact>div:last-child{display:flex;flex-direction:column;align-items:flex-start;gap:15px}.contact a:not(.btn){color:#fff;text-decoration:none;font-size:18px}footer{background:#13060e;color:#a88d9d;padding:25px 7vw;text-align:center;font-size:12px}.reveal{opacity:0;transform:translateY(24px);transition:.8s ease}.reveal.on{opacity:1;transform:none}@media(max-width:850px){header{padding:0 20px}nav{display:none}.panel,.marble{grid-template-columns:1fr}.cards{grid-template-columns:1fr}.marble-photo{min-height:430px}.stats{grid-template-columns:1fr}.grid{display:block}.grid div{height:300px;margin-bottom:10px}.contact{display:block}.contact>div:last-child{margin-top:30px}.hero-content{left:8vw;right:8vw}.actions{flex-wrap:wrap}}
/* V6 — accueil séparé par activité */
.split-hero{display:grid;grid-template-columns:1fr 1fr;padding-top:76px;height:100vh}.activity{position:relative;overflow:hidden;color:#fff;text-decoration:none;min-height:650px}.activity-bg,.activity-shade{position:absolute;inset:0}.activity-bg{background-size:cover;background-position:center;transition:transform 1.2s ease;animation:slowZoom 12s ease-in-out infinite alternate}.activity:hover .activity-bg{transform:scale(1.05)}.door-loop{background-image:url('assets/alpha-stone-portes-cover-v9.png');background-position:center center}.stone-loop{background-image:url('https://images.unsplash.com/photo-1600607687939-ce8a6c25118c?auto=format&fit=crop&w=1600&q=88')}.activity-shade{background:linear-gradient(0deg,rgba(29,9,21,.92),rgba(53,17,38,.12) 70%)}.activity-copy{position:absolute;z-index:3;left:7vw;right:5vw;bottom:10vh}.activity-copy h1{font-size:clamp(46px,5.3vw,82px);margin:12px 0 18px}.activity-copy p:not(.eyebrow){max-width:560px;line-height:1.6}.discover{display:inline-block;margin-top:22px;padding-bottom:7px;border-bottom:1px solid var(--gold);color:var(--gold);letter-spacing:.08em;font-size:13px}.detail-hero{min-height:72vh;padding:150px 7vw 80px;color:#fff;display:flex;align-items:end;background-size:cover;background-position:center;position:relative}.detail-hero:before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(29,9,21,.92),rgba(29,9,21,.3))}.detail-hero>div{position:relative;z-index:2;max-width:900px}.detail-hero h1{font-size:clamp(48px,7vw,92px)}.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.detail-card{background:#fff;padding:28px;border-top:3px solid var(--gold);box-shadow:0 14px 40px rgba(53,17,38,.08)}.detail-card h3{font-family:Georgia;font-size:24px;color:var(--aub)}.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.photo-grid img{width:100%;height:330px;object-fit:cover}.backlink{color:#fff;text-decoration:none;border-bottom:1px solid var(--gold);padding-bottom:5px}@keyframes slowZoom{from{transform:scale(1.02)}to{transform:scale(1.1)}}
@media(max-width:850px){.split-hero{grid-template-columns:1fr;height:auto;padding-top:76px}.activity{min-height:72vh}.activity-copy{left:8vw}.detail-grid,.photo-grid{grid-template-columns:1fr}.photo-grid img{height:260px}}
/* V7 — galerie pierre triée + boucle d'accueil OM TRADING */
.stone-loop{background:none;animation:none}.stone-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;animation:stoneLoop 24s infinite;transform:scale(1.03)}.ss1{background-image:url('assets/marbre/cuisine-03.jpg')}.ss2{background-image:url('assets/marbre/escalier-01.jpg');animation-delay:6s}.ss3{background-image:url('assets/marbre/sdb-01.jpg');animation-delay:12s}.ss4{background-image:url('assets/marbre/mobilier-05.jpg');animation-delay:18s}@keyframes stoneLoop{0%{opacity:0;transform:scale(1.03)}7%,25%{opacity:1}33%,100%{opacity:0;transform:scale(1.11)}}.stone-detail{background-image:url('assets/marbre/cuisine-03.jpg')}.category{padding-top:72px!important;padding-bottom:72px!important}.category.alt{background:#eadfd7}.category .photo-grid{margin-top:34px}.category .photo-grid img{border-radius:2px;box-shadow:0 12px 34px rgba(53,17,38,.10);transition:transform .35s ease,box-shadow .35s ease}.category .photo-grid img:hover{transform:translateY(-4px);box-shadow:0 18px 42px rgba(53,17,38,.16)}
/* V8 — reconstruction complète des gammes portes */
.door-v8{background-image:url('assets/alpha-stone-portes-cover-v9.png');background-position:center center}.range-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}.range-nav a{padding:11px 15px;border:1px solid #cdb9aa;color:var(--aub);text-decoration:none;font-size:12px;font-weight:700;letter-spacing:.06em}.door-range{display:grid;grid-template-columns:.72fr 1.28fr;gap:55px;align-items:center}.door-range.alt{background:#eadfd7}.range-copy h2,.tech-cuts h2{font-size:clamp(38px,5vw,64px);margin:10px 0 20px}.range-copy p{line-height:1.8}.range-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.range-gallery:has(img:only-child){grid-template-columns:1fr}.range-gallery.three{grid-template-columns:repeat(3,1fr)}.range-gallery img{width:100%;height:440px;object-fit:cover;box-shadow:0 14px 35px rgba(53,17,38,.12)}.range-gallery.three img{height:360px}.smart-grid{grid-template-columns:repeat(5,1fr)}.smart-grid img{height:300px}.caption{grid-column:1/-1;font-size:12px;color:#76646d;margin-top:0}.tech-cuts{background:var(--aub2);color:#fff}.tech-cuts .lead{max-width:900px;line-height:1.7;color:#d9cbd3}.cut-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:38px}.cut-card{background:#fff;color:var(--ink);padding:24px}.cut-card h3{font:24px Georgia;color:var(--aub);margin:0 0 18px}.cut-card svg{width:100%;height:auto;background:#faf7f3;border:1px solid #eadfd7}.cut-card svg text{font:13px Arial;fill:#351126}.wall{fill:#d9d0c8}.frame{fill:#73596a}.leaf{fill:#b89a7d;stroke:#351126;stroke-width:2}.core{fill:#ead9b9}.openleaf{fill:#c9a56a;opacity:.7;stroke:#351126}.seal{stroke:#351126;stroke-width:7}.track{fill:#73596a}.wheel{fill:#c9a56a;stroke:#351126;stroke-width:2}.floor{stroke:#777;stroke-width:2}.fireleaf{fill:#777;stroke:#351126;stroke-width:2}.firecore{fill:#d7c49a}.intumescent{fill:#8d2431}.leader{stroke:#351126;stroke-width:1}.contact span{color:#e6dce2;font-size:14px}
@media(max-width:900px){.door-range{grid-template-columns:1fr}.range-gallery.three,.smart-grid,.cut-grid{grid-template-columns:1fr 1fr}.smart-grid img{height:260px}}@media(max-width:600px){.range-gallery,.range-gallery.three,.smart-grid,.cut-grid{grid-template-columns:1fr}.range-gallery img,.range-gallery.three img{height:300px}}

/* V10 — fiches détaillées par famille */
.range-detail-btn{grid-column:1/-1;display:inline-block;justify-self:start;margin-top:14px;padding:13px 18px;background:var(--aub);color:#fff;text-decoration:none;border-bottom:3px solid var(--gold);font-size:12px;font-weight:700;letter-spacing:.06em}.range-detail-btn:hover{background:var(--aub3)}
.product-hero{padding-top:150px!important;background:var(--aub2);color:#fff}.product-hero .wrap,.product-sheet .wrap{max-width:1180px;margin:auto}.product-hero h1{font-size:clamp(44px,6vw,78px);margin-bottom:18px}.product-hero p{max-width:850px;line-height:1.7;color:#e5dce2}.product-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:35px}.product-gallery img{width:100%;height:430px;object-fit:cover}.product-sheet{background:#fff}.sheet-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}.spec-table{width:100%;border-collapse:collapse;margin-top:24px}.spec-table th,.spec-table td{padding:13px 12px;border-bottom:1px solid #e6ddd6;text-align:left;vertical-align:top;font-size:14px;line-height:1.5}.spec-table th{width:34%;color:var(--aub);font-family:Georgia;font-size:16px}.diagram{background:#faf7f3;border:1px solid #e3d7ce;padding:20px;margin-top:20px}.diagram svg{width:100%;height:auto}.diagram text{font:13px Arial;fill:#351126}.note-tech{padding:18px;border-left:4px solid var(--gold);background:#f5efe8;font-size:13px;line-height:1.6;margin-top:25px}.model-badges{display:flex;gap:8px;flex-wrap:wrap}.model-badges span{border:1px solid var(--gold);padding:8px 11px;font-size:12px}.product-sheet h2{font-size:42px}.product-sheet h3{font:26px Georgia;color:var(--aub)}
@media(max-width:800px){.sheet-grid,.product-gallery{grid-template-columns:1fr}.product-gallery img{height:300px}}

/* V11 — présentation société, navigation et standards web */
.manager-title{color:#eadfd7;font-size:11px;letter-spacing:.1em;text-transform:uppercase;white-space:nowrap}.manager-title strong{color:var(--gold);font-size:12px}.menu-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.25);color:#fff;font-size:22px;padding:5px 9px}.company-presentation{display:grid;grid-template-columns:1.4fr .6fr;gap:70px;align-items:start;background:#fff}.company-copy h2{font-size:clamp(38px,5vw,62px);margin:12px 0 25px}.company-copy>p{font-size:17px;line-height:1.8;color:#67565f;max-width:900px}.company-values{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px}.company-values span{padding:10px 13px;border:1px solid #d7c5b8;font-size:12px;font-weight:700;letter-spacing:.04em}.company-card{background:var(--aub);color:#fff;padding:38px;box-shadow:0 18px 45px rgba(53,17,38,.15)}.company-card h3{font:30px Georgia;color:var(--gold);margin:10px 0}.company-card p{line-height:1.65;color:#eadfe5}.company-card hr{border:0;border-top:1px solid rgba(201,165,106,.3);margin:25px 0}footer{line-height:1.8}footer a{color:#c9a56a;text-decoration:none}.main-nav a:focus-visible,.brand:focus-visible,.btn:focus-visible{outline:2px solid var(--gold);outline-offset:4px}@media(max-width:1100px){.manager-title{display:none}.main-nav{gap:16px}.main-nav a{font-size:11px}}@media(max-width:850px){.company-presentation{grid-template-columns:1fr;gap:30px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:76px;left:0;right:0;background:#1d0915;padding:18px 20px;flex-direction:column;gap:0}.main-nav.open{display:flex}.main-nav a{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.08);font-size:12px}}

/* V12 — Portfolio pierre */
.portfolio-intro{text-align:center;background:#f5efe8}.portfolio-intro h2{font-size:clamp(40px,5vw,66px);margin:12px 0 18px}.portfolio-lead{max-width:760px;margin:0 auto 38px;line-height:1.75;color:#67565f}.portfolio-nav{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;max-width:1400px;margin:0 auto}.portfolio-nav a{position:relative;min-height:330px;background-size:cover;background-position:center;text-decoration:none;overflow:hidden;box-shadow:0 16px 38px rgba(53,17,38,.14)}.portfolio-nav a:before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(29,9,21,.88),rgba(29,9,21,.08) 68%);transition:.35s}.portfolio-nav a:hover:before{background:linear-gradient(0deg,rgba(29,9,21,.94),rgba(53,17,38,.18))}.portfolio-nav span{position:absolute;z-index:2;left:20px;right:20px;bottom:22px;color:#fff;font:24px/1.15 Georgia}.portfolio-section{scroll-margin-top:75px}.portfolio-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.portfolio-grid img{width:100%;height:360px;object-fit:cover;cursor:zoom-in;display:block}.portfolio-grid img:nth-child(5n+1){grid-column:span 2}.lightbox{position:fixed;z-index:200;inset:0;background:rgba(16,4,11,.94);display:none;align-items:center;justify-content:center;padding:5vw}.lightbox.open{display:flex}.lightbox img{max-width:min(1400px,88vw);max-height:86vh;object-fit:contain;box-shadow:0 20px 80px rgba(0,0,0,.45)}.lightbox button{position:absolute;border:0;background:rgba(255,255,255,.08);color:#fff;cursor:pointer}.lightbox-close{right:28px;top:22px;font-size:42px;width:52px;height:52px}.lightbox-prev,.lightbox-next{top:50%;transform:translateY(-50%);font-size:54px;width:58px;height:80px}.lightbox-prev{left:22px}.lightbox-next{right:22px}@media(max-width:1050px){.portfolio-nav{grid-template-columns:repeat(2,1fr)}.portfolio-nav a{min-height:280px}}@media(max-width:700px){.portfolio-nav{grid-template-columns:1fr}.portfolio-nav a{min-height:220px}.portfolio-grid{grid-template-columns:1fr}.portfolio-grid img,.portfolio-grid img:nth-child(5n+1){grid-column:auto;height:300px}.lightbox-prev{left:5px}.lightbox-next{right:5px}}

/* V16 — symbole OM uniquement; structure V12 conservée */
.om-mark{width:52px;height:54px;overflow:hidden;display:flex;align-items:flex-start;justify-content:center;flex:0 0 52px;margin-right:10px}.om-mark img{width:150px;max-width:none;height:auto;display:block;transform:translateY(-1px)}.site-header{justify-content:flex-start}.site-header .brand{margin-right:auto}@media(max-width:850px){.om-mark{width:44px;height:46px;flex-basis:44px;margin-right:7px}.om-mark img{width:128px}}

.lang-switch{display:flex;align-items:center;gap:.35rem;margin-left:.65rem;font-size:.78rem;letter-spacing:.08em;color:#c9a56a;white-space:nowrap}.lang-switch a{color:#f5efe8;text-decoration:none}.lang-switch strong{color:#c9a56a}.lang-switch a:hover{color:#c9a56a}@media(max-width:900px){.lang-switch{position:absolute;right:4.2rem;top:1.35rem}}