:root{
  --navy:#1E3A5F;
  --navy-dark:#0F2340;
  --accent:#3B82F6;
  --accent-dark:#2563EB;
  --accent-soft:#EFF6FF;
  --anthracite:#2D2D2D;
  --muted:#687080;
  --light:#F7F9FC;
  --line:#E5EAF2;
  --white:#FFFFFF;
  --shadow:0 18px 45px rgba(15,35,64,.12);
  --radius:24px;
  --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:var(--anthracite);background:#fff;line-height:1.6}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.container{width:min(100% - 32px,var(--container));margin-inline:auto}
.narrow{max-width:880px}
.section{padding:82px 0}
.muted-section{background:var(--light)}
.center{text-align:center;margin-top:28px}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(2.25rem,5vw,4.8rem);line-height:1.02;letter-spacing:-.05em}
h2{font-size:clamp(1.8rem,3vw,3rem);line-height:1.1;letter-spacing:-.035em}
h3{font-size:1.25rem;line-height:1.2}
p{color:#1f2933}
.eyebrow{color:var(--accent);font-weight:900;text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;margin-bottom:10px}
.eyebrow.light{color:#fff;background:rgba(255,255,255,.15);display:inline-flex;padding:7px 12px;border-radius:999px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;padding:13px 20px;font-weight:850;border:2px solid transparent;transition:.22s ease;cursor:pointer;text-align:center}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--navy);color:#fff;box-shadow:0 12px 24px rgba(30,58,95,.24)}
.btn-primary:hover{background:var(--navy-dark)}
.btn-outline-light{border-color:rgba(255,255,255,.9);color:#fff}
.btn-outline-light:hover{background:#fff;color:var(--navy-dark)}
.btn-outline-dark{border-color:var(--navy);color:var(--navy)}
.btn-outline-dark:hover{background:var(--navy);color:#fff}
.btn-phone{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.55);box-shadow:none}
.btn-phone:hover{background:#fff;color:var(--navy);border-color:#fff}
.site-header{position:sticky;top:0;z-index:50;background:#fff;transition:box-shadow .2s ease}
.site-header.scrolled{box-shadow:0 8px 28px rgba(0,0,0,.08)}
.navbar{min-height:88px;width:min(100% - 28px,1240px);margin-inline:auto;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand img{height:58px;width:auto;object-fit:contain}
.nav-panel{display:flex;align-items:center;gap:22px}
.nav-links{list-style:none;display:flex;align-items:center;gap:6px;margin:0;padding:0}
.nav-links li{position:relative}
.nav-links a,.services-summary{display:flex;align-items:center;padding:10px 14px;border-radius:999px;font-weight:800;color:#333;white-space:nowrap;cursor:pointer;list-style:none}
.services-summary::-webkit-details-marker{display:none}
.services-summary::after{content:'▾';margin-left:8px;font-weight:900;color:var(--accent);font-size:.78rem;transition:.2s ease}
.services-menu[open] .services-summary::after{transform:rotate(180deg)}
.nav-links a:hover,.nav-links a.active,.services-summary:hover,.services-summary.active,.services-menu[open] .services-summary{background:var(--accent-soft);color:var(--accent)}
.services-dropdown{display:grid;gap:6px;position:absolute;top:calc(100% + 10px);left:0;min-width:270px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow);z-index:60}
.services-menu:not([open]) .services-dropdown{display:none}
.services-dropdown a{white-space:normal;border-radius:14px;padding:12px 14px}
.nav-cta{white-space:nowrap}
.hamburger{display:none;width:48px;height:48px;border:1px solid var(--line);border-radius:14px;background:#fff;cursor:pointer}
.hamburger span{display:block;width:24px;height:3px;background:var(--anthracite);margin:5px auto;border-radius:10px}
.hero{min-height:730px;display:grid;align-items:center;position:relative;background:url('../images/realisations/ardoise-fibro-hydrofuge-apres-01.jpg') center/cover no-repeat;color:#fff;overflow:hidden}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,35,64,.9),rgba(15,35,64,.62),rgba(15,35,64,.28))}
.hero-content{position:relative;max-width:890px;margin-left:max(16px,calc((100vw - var(--container))/2));padding:96px 0}
.hero h1,.hero p{color:#fff}
.hero-subtitle{font-size:1.22rem;max-width:760px;color:rgba(255,255,255,.9)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:28px 0 14px}
.hero-proof{margin-top:18px;display:inline-flex;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:10px 14px;font-weight:900;color:#fff}
.section-heading{margin-bottom:34px}
.center-heading{text-align:center;max-width:760px;margin-inline:auto}
.split-heading{display:flex;justify-content:space-between;gap:24px;align-items:end}
.link-arrow{font-weight:900;color:var(--accent)}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.service-card,.mini-service-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 10px 28px rgba(0,0,0,.04);transition:.22s ease}
.service-card:hover,.mini-service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(59,130,246,.35)}
.icon{width:46px;height:46px;border-radius:16px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-bottom:18px}
.service-card strong,.mini-service-card span{color:var(--accent)}
.trust-strip{background:#f7f9fc;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-row{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-row div{display:flex;align-items:center;justify-content:center;gap:8px;min-height:70px;font-weight:850;white-space:nowrap}
.trust-row div+div{border-left:1px solid #dde5f2}
.about-grid,.zone-grid,.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.image-frame{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#eee}
.image-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.cards-grid{display:grid;gap:24px}
.cards-grid.three{grid-template-columns:repeat(3,1fr)}
.work-card,.review-card,.quote-form,.contact-aside,.service-sidebar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 32px rgba(0,0,0,.05);overflow:hidden}
.work-card{transition:.22s ease}
.work-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.work-card img{width:100%;height:240px;object-fit:cover}
.work-card div{padding:22px}
.work-card span{display:inline-flex;background:var(--accent-soft);color:var(--accent);font-weight:900;border-radius:999px;padding:5px 10px;font-size:.78rem;margin-bottom:12px}
.reviews-grid{display:grid;gap:22px}
.reviews-grid.three{grid-template-columns:repeat(3,1fr)}
.reviews-list{grid-template-columns:repeat(2,1fr)}
.review-card{padding:24px}
.review-top{display:flex;gap:14px;align-items:center;margin-bottom:14px}
.avatar{width:46px;height:46px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:900}
.stars{color:#f5a623;font-weight:900;letter-spacing:1px}
.rating-line{font-weight:850;color:var(--anthracite)}
.city-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.city-badges span{padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;font-weight:700}
.map{height:440px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);z-index:1}
.accordion{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.accordion-item+ .accordion-item{border-top:1px solid var(--line)}
.accordion-item button{width:100%;border:0;background:#fff;text-align:left;padding:20px 24px;font-weight:900;cursor:pointer;color:var(--anthracite);display:flex;justify-content:space-between;gap:20px;font-size:1rem}
.accordion-item button::after{content:'+';color:var(--accent);font-size:1.35rem}
.accordion-item.open button::after{content:'−'}
.accordion-item div{max-height:0;overflow:hidden;transition:max-height .25s ease}
.accordion-item p{padding:0 24px 20px;margin:0;color:var(--muted)}
.page-hero{background:linear-gradient(135deg,var(--navy-dark),#111827);color:#fff}
.page-hero h1,.page-hero p{color:#fff}
.page-hero.compact{padding:82px 0 62px}
.page-hero .container{max-width:980px}
.service-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:34px;align-items:start}
.service-main{display:grid;gap:46px}
.service-sidebar{position:sticky;top:104px;padding:24px}
.service-sidebar .btn,.service-sidebar .sidebar-phone{display:flex;width:100%;min-height:52px;align-items:center;justify-content:center;text-align:center;margin-top:12px}
.service-sidebar .sidebar-phone,.contact-phone{border:2px solid rgba(59,130,246,.22);border-radius:999px;background:#eff6ff;color:var(--navy);padding:12px 16px;font-weight:950}
.check-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}
.check-list li{position:relative;padding-left:28px;font-weight:750}
.check-list li::before{content:'✓';position:absolute;left:0;color:var(--accent);font-weight:900}
.zigzag{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.benefit-list{margin:0 0 18px;padding-left:20px}
.benefit-list li{margin-bottom:8px}
.callout{background:var(--accent-soft);border-left:5px solid var(--accent);padding:24px;border-radius:18px}
.callout span{font-weight:950;color:var(--accent);text-transform:uppercase;font-size:.8rem;letter-spacing:.08em}
.callout p{margin:6px 0 0;font-weight:850;color:var(--anthracite)}
.other-services{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.filter-pills{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:30px}
.filter-pills button{border:1px solid var(--navy);background:#fff;border-radius:999px;padding:11px 16px;font-weight:900;cursor:pointer;color:var(--navy)}
.filter-pills button.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.filter-card.hidden{display:none;opacity:0;transform:scale(.98)}
.quote-form{padding:28px;display:grid;gap:16px}
.quote-form label{display:grid;gap:7px;font-weight:850}
.quote-form input,.quote-form select,.quote-form textarea{width:100%;border:1px solid #d7d7d7;border-radius:14px;padding:13px 14px;background:#fff;outline:none}
.quote-form input:focus,.quote-form select:focus,.quote-form textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(59,130,246,.12)}
.hidden-field{display:none!important}
.contact-aside{padding:30px}
.contact-phone{display:flex;width:100%;align-items:center;justify-content:center;margin-top:20px;font-size:1.15rem}
.legal-content{max-width:900px}
.legal-content h2{font-size:1.45rem;margin-top:30px}
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.blog-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 32px rgba(0,0,0,.05);overflow:hidden;transition:.22s ease}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.blog-card img{width:100%;height:220px;object-fit:cover}
.blog-card div{padding:22px}
.blog-card span{display:inline-flex;background:var(--accent-soft);color:var(--accent);font-weight:900;border-radius:999px;padding:5px 10px;font-size:.78rem;margin-bottom:12px}
.blog-card h3{font-size:1.18rem;margin:0 0 10px}
.blog-card p{color:var(--muted);margin:0 0 12px}
.blog-card strong{color:var(--accent)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:36px;align-items:start}
.article-content{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 32px rgba(0,0,0,.05);padding:clamp(22px,4vw,42px)}
.article-hero-img{width:100%;max-height:430px;object-fit:cover;border-radius:20px;margin-bottom:28px}
.article-content h2{margin-top:32px}
.article-content p{font-size:1.05rem}
.article-cta{background:var(--accent-soft);border-left:5px solid var(--accent);border-radius:18px;padding:24px;margin-top:34px}
.article-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:18px}
.article-sidebar{position:sticky;top:104px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 32px rgba(0,0,0,.05);padding:24px}
.article-sidebar h2{font-size:clamp(1.35rem,2vw,1.7rem);line-height:1.15;margin:4px 0 10px}
.article-sidebar .btn{display:flex;width:100%;align-items:center;justify-content:center;text-align:center;margin-top:18px}
.article-sidebar h3{margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
.article-links{padding-left:18px;margin:14px 0 0}
.article-links li{margin-bottom:10px}
.article-links a{font-weight:750}
.article-links a:hover{color:var(--accent)}
.related-blog{margin-top:8px}
.thanks-card{max-width:860px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:clamp(28px,5vw,54px)}
.thanks-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}
.site-footer{background:#0F2340;color:#fff;padding:54px 0 22px}
.site-footer a{display:block;color:rgba(255,255,255,.82);margin-bottom:8px}
.site-footer h3{color:#fff}
.site-footer p{color:rgba(255,255,255,.82)}
.site-footer img{height:60px;max-width:330px;object-fit:contain;background:#fff;border-radius:10px;padding:8px;margin-bottom:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.2fr;gap:36px}
.footer-contact p{color:rgba(255,255,255,.82);margin:0 0 12px}
.footer-contact .btn{width:100%;max-width:280px;white-space:normal;line-height:1.2;margin:8px 0 12px}
.footer-phone{display:inline-flex;align-items:center;justify-content:center;padding:13px 18px;border-radius:999px;border:2px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);font-weight:900;font-size:1.08rem;color:#fff!important;width:100%;max-width:280px;box-sizing:border-box;text-align:center;white-space:nowrap}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:22px;margin-top:36px;color:rgba(255,255,255,.65);display:flex;align-items:center;justify-content:space-between;gap:18px}
@media (max-width:1120px){
  .hamburger{display:block}
  .nav-panel{position:fixed;left:16px;right:16px;top:88px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:18px;display:none;align-items:stretch;flex-direction:column;max-height:calc(100vh - 110px);overflow:auto}
  .nav-panel.open{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:4px}
  .nav-links li,.nav-services,.services-menu{width:100%}
  .nav-links a,.services-summary{justify-content:space-between;font-size:1.05rem;padding:14px 16px;border-radius:14px;width:100%}
  .services-dropdown{position:static;min-width:0;box-shadow:none;border:0;padding:8px 0 0 12px;background:transparent}
  .services-dropdown a{padding:12px 14px;font-size:1rem;background:#fff;border:1px solid var(--line)}
  .nav-cta{width:100%;margin-top:10px}
  .service-layout,.article-layout{grid-template-columns:1fr}
  .service-sidebar,.article-sidebar{position:static}
  .cards-grid.three,.reviews-grid.three,.reviews-list,.blog-grid{grid-template-columns:repeat(2,1fr)}
  .other-services{grid-template-columns:1fr}
}
@media (max-width:820px){
  .about-grid,.zone-grid,.contact-grid,.zigzag,.zigzag.reverse{grid-template-columns:1fr}
  .split-heading{display:block}
  .footer-grid{grid-template-columns:1fr}
  .trust-row{grid-template-columns:1fr}
  .trust-row div{white-space:normal}
  .trust-row div+div{border-left:0;border-top:1px solid #dde5f2}
  .map{height:360px}
}
@media (max-width:560px){
  .container{width:min(100% - 24px,var(--container))}
  .navbar{width:calc(100% - 20px);min-height:76px}
  .brand img{height:48px}
  .section{padding:62px 0}
  .page-hero.compact{padding:58px 0 44px}
  h1{font-size:2.25rem}
  .hero{min-height:700px}
  .hero-actions .btn,.thanks-actions .btn,.hero-phone{width:100%}
  .service-grid,.cards-grid.three,.reviews-grid.three,.reviews-list,.blog-grid{grid-template-columns:1fr}
  .work-card img,.blog-card img{height:210px}
  .quote-form,.contact-aside,.review-card,.service-sidebar{padding:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .footer-contact .btn,.footer-phone{max-width:100%}
}

.services-four{grid-template-columns:repeat(4,1fr)}
.quote-form input::placeholder,.quote-form textarea::placeholder{color:#98a1ad}
.work-card p{color:var(--muted)}
@media (max-width:1120px){.services-four{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.services-four{grid-template-columns:1fr}}


/* V6 - blocs avant/après mieux cadrés */
.before-after-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;margin-top:28px}
.before-after-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.before-after-images{display:grid;grid-template-columns:1fr 1fr;gap:0;background:#eef4ff}
.before-after-img{position:relative;min-width:0}
.before-after-img img{width:100%;height:260px;object-fit:cover;display:block}
.before-after-img span{position:absolute;left:14px;top:14px;background:rgba(15,35,64,.92);color:#fff;border-radius:999px;padding:7px 12px;font-weight:900;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em}
.before-after-content{padding:24px}
.before-after-content .tag{display:inline-flex;background:var(--accent-soft);color:var(--accent);font-weight:900;border-radius:999px;padding:5px 10px;font-size:.78rem;margin-bottom:12px}
.before-after-content h3{margin:0 0 10px;font-size:1.35rem}
.before-after-content p{color:var(--muted);margin:0}
.featured-work-note{margin-top:18px;color:var(--muted);max-width:760px}
@media (max-width:980px){.before-after-grid{grid-template-columns:1fr}.before-after-img img{height:230px}}
@media (max-width:560px){.before-after-images{grid-template-columns:1fr}.before-after-img img{height:210px}}

/* Finitions V8 : cartes homogènes */
.equal-cards{align-items:stretch}
.equal-cards .work-card,.service-grid .service-card,.blog-grid .blog-card{height:100%;display:flex;flex-direction:column}
.equal-cards .work-card>div,.blog-grid .blog-card>div{display:flex;flex-direction:column;flex:1}
.equal-cards .work-card p,.service-card p,.blog-card p{flex:1}
.service-grid{align-items:stretch}
.service-card{min-height:315px}
.cards-grid.three .work-card{height:100%}


/* V9 finale : galerie propre, grille stable, cartes homogènes */
.gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;align-items:stretch}
.gallery-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 32px rgba(0,0,0,.05);overflow:hidden;height:100%;display:flex;flex-direction:column;transition:.22s ease}
.gallery-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.gallery-card>img{width:100%;height:235px;object-fit:cover;display:block}
.gallery-card-body{padding:22px;display:flex;flex-direction:column;flex:1}
.gallery-card-body span{display:inline-flex;align-self:flex-start;background:var(--accent-soft);color:var(--accent);font-weight:900;border-radius:999px;padding:5px 10px;font-size:.78rem;margin-bottom:12px}
.gallery-card-body h3{margin:0 0 10px;font-size:1.2rem;line-height:1.2}
.gallery-card-body p{margin:0;color:var(--muted);flex:1}
.gallery-ba-images{display:grid;grid-template-columns:1fr 1fr;background:#eef4ff}
.gallery-ba-img{position:relative;min-width:0}
.gallery-ba-img img{width:100%;height:235px;object-fit:cover;display:block}
.gallery-ba-img span{position:absolute;left:12px;top:12px;background:rgba(15,35,64,.94);color:#fff;border-radius:999px;padding:6px 11px;font-weight:900;font-size:.74rem;text-transform:uppercase;letter-spacing:.04em}
.filter-card.hidden{display:none!important}
@media (max-width:980px){.gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.gallery-grid{grid-template-columns:1fr}.gallery-card>img,.gallery-ba-img img{height:220px}}

/* Lightbox images */
main img:not(.no-lightbox){cursor:zoom-in}
.lightbox-overlay{position:fixed;inset:0;z-index:9999;background:rgba(6,18,34,.88);display:flex;align-items:center;justify-content:center;padding:32px;opacity:0;pointer-events:none;transition:opacity .2s ease}
.lightbox-overlay.open{opacity:1;pointer-events:auto}
.lightbox-image{max-width:min(1120px,92vw);max-height:86vh;border-radius:18px;box-shadow:0 24px 80px rgba(0,0,0,.45);object-fit:contain;background:#fff;cursor:default}
.lightbox-close{position:absolute;top:20px;right:22px;width:46px;height:46px;border:1px solid rgba(255,255,255,.35);border-radius:999px;background:rgba(255,255,255,.12);color:#fff;font-size:30px;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer;font-weight:500}
.lightbox-close:hover{background:rgba(255,255,255,.22)}
@media(max-width:700px){.lightbox-overlay{padding:18px}.lightbox-close{top:14px;right:14px;width:42px;height:42px}.lightbox-image{max-width:94vw;max-height:82vh;border-radius:14px}}


/* Bouton retour */
.page-back-wrap{width:min(100% - 40px,var(--container));margin:18px auto -4px;display:flex;justify-content:flex-start}
.page-back-btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;color:var(--navy);border-radius:999px;padding:10px 16px;font-weight:900;cursor:pointer;box-shadow:0 8px 22px rgba(15,35,64,.08);transition:.2s ease;font:inherit;line-height:1}
.page-back-btn:hover{background:var(--accent-soft);border-color:rgba(59,130,246,.35);color:var(--accent);transform:translateX(-2px)}
@media(max-width:560px){.page-back-wrap{width:calc(100% - 24px);margin:14px auto -8px}.page-back-btn{padding:10px 14px}}