:root{--navy:#153A63;--navy-d:#0E2A48;--navy-l:#274D78;--blue:#058CCC;--sky:#9FD4EE;--mist:#D6E4F0;--grey:#EAEAEA;--steel:#B0BAC6;--text2:#3E5570;--muted:#5B6B7E;--bg2:#F3F6F9;--w:1280px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Hanken Grotesk',system-ui,sans-serif;color:var(--navy);background:#fff;font-size:17px;line-height:1.6}
img{max-width:100%;display:block}
a{color:var(--navy);text-decoration:none}a:hover{color:var(--blue)}
h1,h2,h3{font-family:'Archivo',system-ui,sans-serif;margin:0;letter-spacing:-.5px;line-height:1.08}
p{margin:0}
.wrap{max-width:var(--w);margin:0 auto;padding:0 32px}
.eyebrow{font-size:14px;letter-spacing:3px;text-transform:uppercase;font-weight:600;color:var(--blue)}
.on-dark .eyebrow,.eyebrow.light{color:var(--sky)}
.btn{display:inline-block;padding:16px 28px;border-radius:4px;background:var(--blue);color:#fff;font-weight:600;border:0;font:inherit;font-weight:600;cursor:pointer;text-align:center}
.btn:hover{background:#0479B0;color:#fff}
.btn.ghost{background:transparent;border:1px solid #5AB4E0;color:#fff}.btn.ghost:hover{background:rgba(255,255,255,.08)}
section{padding:104px 0}
.bg2{background:var(--bg2)}.dark{background:var(--navy);color:#fff}.darker{background:var(--navy-d);color:#fff}
.lead{font-size:19px;color:var(--text2);max-width:640px}
.dark .lead,.darker .lead{color:var(--mist)}
.h2{font-size:clamp(32px,4vw,48px);font-weight:800}
.head{display:flex;justify-content:space-between;align-items:flex-end;gap:48px;margin-bottom:56px;flex-wrap:wrap}
.head>div{display:flex;flex-direction:column;gap:16px;max-width:760px}

/* header */
.site-header{position:sticky;top:0;z-index:10;background:#fff;border-bottom:1px solid var(--grey)}
.site-header .wrap{height:88px;display:flex;align-items:center;justify-content:space-between}
.site-header .logo img{height:54px;width:auto}
.nav{display:flex;gap:36px;align-items:center;font-weight:500}
.nav a[aria-current=page]{color:var(--blue);font-weight:600;box-shadow:inset 0 -2px 0 var(--blue);padding:6px 0}
.nav .btn{padding:13px 22px}
.menu-toggle{display:none;width:48px;height:48px;border:0;background:none;cursor:pointer;align-items:center;justify-content:center}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);background:var(--navy);min-height:640px;padding:0}
.hero .txt{padding:88px 64px 88px max(32px,calc((100vw - var(--w))/2 + 32px));display:flex;flex-direction:column;justify-content:center;gap:26px;color:#fff}
.hero h1{font-size:clamp(38px,5vw,64px);font-weight:800;letter-spacing:-1px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap;padding-top:6px}
.hero .pic{position:relative;overflow:hidden;min-height:360px}
.hero .pic img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero .pic .motif{position:absolute;right:6%;top:14%;width:62%;opacity:.2}
.caption{position:absolute;left:24px;bottom:24px;background:rgba(14,42,72,.85);color:#fff;padding:9px 14px;border-radius:4px;font-size:13px;letter-spacing:1px;text-transform:uppercase}
.page-hero{background:var(--navy);color:#fff;position:relative;overflow:hidden;padding:96px 0}
.page-hero .motif{position:absolute;right:-40px;top:0;width:560px;opacity:.13}
.page-hero .wrap{position:relative;display:flex;flex-direction:column;gap:20px}
.page-hero h1{font-size:clamp(36px,4.6vw,60px);font-weight:800;max-width:860px}

/* trust */
.trust{background:var(--navy-d);color:#fff;padding:30px 0}
.trust .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.trust small{display:block;color:var(--steel);font-size:14px}
.badge{width:52px;height:52px;border:2px solid #5AB4E0;border-radius:50%;display:grid;place-items:center;font-family:Archivo;font-weight:800;font-size:14px;color:var(--sky);flex-shrink:0}
.trust .item{display:flex;gap:14px;align-items:center}

/* cards */
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.feature{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-auto-rows:340px;gap:24px}
.card{display:flex;flex-direction:column;border:1px solid var(--grey);border-radius:6px;overflow:hidden;background:#fff}
.card img{flex:1 1 0;min-height:0;width:100%;object-fit:cover}
.card .body{padding:20px 24px;display:flex;flex-direction:column;gap:6px}
.card .tag{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--blue);font-weight:600}
.card h3{font-size:22px;font-weight:700}
.card .meta{font-size:15px;color:var(--muted)}
.card.big{grid-column:span 2;grid-row:span 2;border:0}
.card.big .body{background:var(--navy);color:#fff;padding:28px 32px}
.card.big h3{font-size:32px}.card.big .tag{color:var(--sky)}.card.big .meta{color:var(--mist)}
.tile{background:#fff;border-radius:6px;padding:34px;display:flex;flex-direction:column;gap:14px}
.tile h3{font-size:23px;font-weight:700}
.tile p{font-size:16px;color:var(--text2)}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--navy)}
.steps>div{padding:30px 28px 0 0;display:flex;flex-direction:column;gap:12px}
.steps .n{font-family:Archivo;font-weight:800;font-size:40px;color:var(--blue)}
.steps h3{font-size:23px;font-weight:700}.steps p{font-size:16px;color:var(--text2)}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:80px;align-items:center}
.split img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:6px}
.split .txt{display:flex;flex-direction:column;gap:24px}
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.stats>div{border-top:1px solid #5AB4E0;padding-top:16px}
.stats strong{display:block;font-family:Archivo;font-size:38px;font-weight:800}
.stats span{font-size:15px;color:var(--steel)}
.cta .wrap{display:flex;justify-content:space-between;align-items:center;gap:48px;flex-wrap:wrap}
.cta{padding:80px 0}
.partners{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.partners div{height:110px;border:1px solid var(--navy-l);border-radius:6px;display:grid;place-items:center;font-family:Archivo;font-weight:700;font-size:21px;text-align:center;padding:0 12px}
.list2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px}
.list2>div{border-top:1px solid var(--steel);padding:20px 0;display:flex;flex-direction:column;gap:4px}
.list2 strong{font-family:Archivo;font-size:19px}.list2 span{font-size:16px;color:var(--text2)}

/* réalisations */
.filters{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:40px}
.filters button{height:44px;padding:0 20px;border-radius:22px;font:inherit;font-size:15px;font-weight:600;cursor:pointer;background:#fff;color:var(--navy);border:1px solid var(--steel)}
.filters button[aria-pressed=true]{background:var(--navy);color:#fff;border-color:var(--navy)}
.refs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px 24px;align-items:start}
.ref{border:1px solid var(--grey);border-radius:6px;overflow:hidden}
.ref img{height:260px;width:100%;object-fit:cover}
.ref .body{padding:22px 24px;display:flex;flex-direction:column;gap:8px}
.ref .top{display:flex;justify-content:space-between;gap:10px;font-size:12px;letter-spacing:2px;text-transform:uppercase;font-weight:600}
.ref .top span:first-child{color:var(--blue)}.ref .top span:last-child{color:var(--muted)}
.ref h2{font-size:22px;font-weight:700;letter-spacing:-.3px;line-height:1.2}
.ref .sub{font-size:16px;color:var(--text2)}
.ref dl{border-top:1px solid var(--grey);margin:6px 0 0;padding-top:14px;display:grid;grid-template-columns:112px minmax(0,1fr);gap:8px 12px;font-size:14px;line-height:1.45}
.ref dt{color:var(--muted)}.ref dd{margin:0}.ref dd.q{font-weight:500}
.ref[hidden]{display:none}

/* contact */
.contact{display:grid;grid-template-columns:420px minmax(0,1fr);gap:72px;align-items:start}
.coords{display:flex;flex-direction:column;gap:18px}
.coords div{display:flex;gap:14px;align-items:flex-start}
.coords svg{flex-shrink:0;margin-top:3px}
.map{width:100%;height:260px;border:0;border-radius:6px}
form.devis{background:#fff;border-radius:6px;padding:44px;display:flex;flex-direction:column;gap:20px}
.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
label{display:flex;flex-direction:column;gap:8px;font-size:15px;font-weight:600}
input,select,textarea{font:inherit;font-size:16px;font-weight:400;padding:0 16px;height:52px;border:1px solid var(--steel);border-radius:4px;background:#fff;color:var(--navy)}
textarea{height:auto;padding:14px 16px;resize:vertical}
input[type=file]{height:auto;padding:14px 16px;border-style:dashed;background:#F9FBFC}
.check{flex-direction:row;align-items:flex-start;font-weight:400;font-size:14px;color:var(--text2)}
.check input{width:18px;height:18px;margin-top:2px;padding:0}
.hp{position:absolute;left:-9999px}
.notice{padding:16px 20px;border-radius:4px;font-weight:600}
.notice.ok{background:#E5F4EC;color:#1D6B3F}.notice.err{background:#FBE9E7;color:#9B2C1F}

/* footer */
.site-footer{background:var(--navy-d);color:var(--mist);font-size:15px;padding:56px 0 32px}
.site-footer .top{display:flex;justify-content:space-between;gap:48px;flex-wrap:wrap}
.site-footer .logo{background:#fff;border-radius:4px;padding:10px 14px;display:inline-block}
.site-footer .logo img{height:42px;width:auto}
.site-footer .cols{display:flex;gap:64px;flex-wrap:wrap}
.site-footer .cols div{display:flex;flex-direction:column;gap:8px}
.site-footer strong{color:#fff}
.site-footer a{color:var(--mist)}.site-footer a:hover{color:#fff}
.site-footer .bottom{border-top:1px solid var(--navy-l);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--steel);font-size:14px}
.legal h2{font-size:26px;margin:36px 0 12px}.legal p{color:var(--text2);margin-bottom:10px}

/* responsive */
@media (max-width:1024px){
  .grid4,.steps{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:32px}
  .refs,.grid3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feature{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:300px}
  .contact{grid-template-columns:1fr}
  .split{gap:48px}
}
@media (max-width:860px){
  .menu-toggle{display:flex}
  .nav{display:none;position:absolute;top:88px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 24px;border-bottom:1px solid var(--grey)}
  .nav.open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid var(--grey)}
  .nav a[aria-current=page]{box-shadow:none}
  .nav .btn{margin-top:16px;border:0}
  .hero{grid-template-columns:1fr}
  .hero .txt{padding:56px 24px;order:2}
  .hero .pic{order:1;min-height:300px}
  .split{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  section{padding:64px 0}
  .site-header .wrap{height:72px}.site-header .logo img{height:40px}.nav{top:72px}
  .grid3,.grid4,.steps,.refs,.feature,.stats,.partners,.list2,.fields{grid-template-columns:1fr}
  .feature{grid-auto-rows:280px}.card.big{grid-column:auto;grid-row:span 2}
  .hero .actions .btn,.cta .btn{width:100%}
  form.devis{padding:24px}
  .trust .wrap{flex-direction:column;align-items:flex-start;gap:18px}
}
.hero .lead{color:var(--mist)}
.site-footer .top{align-items:flex-start}
/* entreprise v2 */
.light-stats>div{border-top-color:var(--steel)}.light-stats span{color:var(--muted)}.light-stats strong{color:var(--blue)}
.social{display:flex;gap:12px;flex-wrap:wrap}.social .btn{display:inline-flex;align-items:center;gap:10px}
.btn.ghost-dark{background:#fff;color:var(--navy);border:1px solid var(--steel)}
.rge{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--grey);border-radius:6px;padding:14px 20px}
.rge .badge{color:var(--blue);border-color:var(--blue)}.rge small{color:var(--muted)}
.p-group{margin-top:40px}.p-group h3{font-size:15px;letter-spacing:2px;text-transform:uppercase;font-family:'Hanken Grotesk';font-weight:600;color:var(--muted);margin-bottom:16px}
.logo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}
.logo-tile{height:96px;background:#fff;border:1px solid var(--grey);border-radius:6px;display:flex;align-items:center;justify-content:center;padding:14px 18px}
.logo-tile img{max-height:62px;max-width:100%;width:auto;object-fit:contain}
.txt-tile{font-family:Archivo;font-weight:700;font-size:16px;text-align:center;line-height:1.25;color:var(--navy)}
.site-footer .bottom .li{color:var(--mist);display:inline-flex}
.site-footer .bottom{align-items:center}
@media (max-width:640px){.logo-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.logo-tile{height:84px}}
.page-hero .lead{color:var(--mist)}
.p-ref{margin-top:56px;padding-top:40px;border-top:1px solid var(--steel)}.p-intro{color:var(--text2);font-size:16px;margin:-6px 0 16px}
.p-ref .logo-grid{grid-template-columns:repeat(auto-fill,minmax(150px,200px))}
.cap-tile{flex-direction:column;gap:6px}.cap-tile img{max-height:44px}.cap-tile span{font-family:Archivo;font-weight:700;font-size:13px;color:var(--navy)}
.txt-tile{flex-direction:column;gap:4px}.txt-tile small{font-family:'Hanken Grotesk';font-weight:500;font-size:12px;color:var(--muted)}
.rge-logo{height:56px;width:auto;flex-shrink:0}
.trust .rge-logo{background:#fff;border-radius:6px;padding:4px;height:60px}
.rge{flex-shrink:0;flex-wrap:nowrap}.rge .rge-logo{height:72px}.rge span{white-space:nowrap}
.head>.rge{flex-direction:row;align-items:center;gap:16px}
/* galerie */
.gal-open{position:relative;display:block;width:100%;padding:0;border:0;background:none;cursor:zoom-in;overflow:hidden}
.gal-open img{height:260px;width:100%;object-fit:cover;transition:transform .35s}
.gal-open:hover img,.gal-open:focus-visible img{transform:scale(1.04)}
.gal-count{position:absolute;right:12px;bottom:12px;display:inline-flex;align-items:center;gap:6px;background:rgba(14,42,72,.85);color:#fff;font-size:13px;font-weight:600;padding:6px 10px;border-radius:4px}
.lb{position:fixed;inset:0;z-index:100;background:rgba(8,20,36,.95);display:grid;grid-template-columns:72px minmax(0,1fr) 72px;grid-template-rows:minmax(0,1fr) auto;align-items:center}
.lb[hidden]{display:none}
.lb figure{margin:0;grid-column:2;grid-row:1;display:flex;flex-direction:column;align-items:center;gap:12px;height:100%;justify-content:center;padding:56px 0 8px;min-height:0}
.lb figure img{max-width:100%;max-height:calc(100vh - 210px);object-fit:contain;border-radius:4px}
.lb figcaption{color:#fff;display:flex;gap:16px;align-items:baseline;font-size:15px}.lb-num{color:var(--steel);font-size:14px}
.lb button{background:none;border:0;color:#fff;cursor:pointer;width:56px;height:56px;display:grid;place-items:center;border-radius:50%}
.lb button:hover{background:rgba(255,255,255,.12)}
.lb-prev{grid-column:1;grid-row:1;justify-self:center}.lb-next{grid-column:3;grid-row:1;justify-self:center}
.lb-close{position:absolute;top:12px;right:12px}
.lb-thumbs{grid-column:1/-1;grid-row:2;display:flex;gap:8px;justify-content:center;padding:10px 16px 18px;overflow-x:auto}
.lb-thumbs button{width:76px;height:54px;border-radius:4px;padding:0;overflow:hidden;opacity:.55;flex-shrink:0}
.lb-thumbs button[aria-current=true]{opacity:1;outline:2px solid var(--blue)}
.lb-thumbs img{width:100%;height:100%;object-fit:cover}
@media (max-width:640px){.lb{grid-template-columns:44px minmax(0,1fr) 44px}.lb button{width:44px;height:44px}.lb figure img{max-height:calc(100vh - 190px)}.lb-thumbs button{width:56px;height:40px}}
.lb-thumbs{justify-content:safe center}.lb{background:rgba(8,20,36,.97)}
.phases{margin:0;padding-left:20px;color:var(--text2);font-size:17px;line-height:1.6;display:flex;flex-direction:column;gap:6px}.phases strong{color:var(--navy)}
.lb{background:#0B1B2E}
/* vidéo */
.hero .pic{background:#0E2A48}
.hero-video{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.hero-video iframe{position:absolute;top:50%;left:50%;width:max(100%,177.78vh);height:max(100%,56.25vw);min-width:177.78%;min-height:100%;transform:translate(-50%,-50%);border:0;opacity:0;transition:opacity .8s}
.hero-video.on iframe{opacity:1}
.hero .pic .hero-video iframe{width:auto;height:100%;aspect-ratio:16/9;min-width:100%;min-height:100%}
.video-btn{position:absolute;left:24px;bottom:24px;z-index:2;display:inline-flex;align-items:center;gap:10px;background:rgba(14,42,72,.88);color:#fff;border:1px solid rgba(255,255,255,.35);padding:12px 18px;border-radius:4px;font:inherit;font-size:15px;font-weight:600;cursor:pointer}
.video-btn:hover{background:var(--blue)}
.vm{position:fixed;inset:0;z-index:110;background:#0B1B2E;display:flex;align-items:center;justify-content:center;padding:64px 24px 24px}
.vm[hidden]{display:none}
.vm-frame{width:min(1200px,100%);aspect-ratio:16/9;max-height:calc(100vh - 100px)}
.vm-frame iframe{width:100%;height:100%;border:0;border-radius:4px}
.vm-close{position:absolute;top:12px;right:12px;background:none;border:0;color:#fff;width:56px;height:56px;border-radius:50%;cursor:pointer;display:grid;place-items:center}
.vm-close:hover{background:rgba(255,255,255,.12)}
.video-card{cursor:pointer}
.video-card .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:64px;height:64px;border-radius:50%;background:rgba(5,140,204,.92);color:#fff;display:grid;place-items:center;box-shadow:0 4px 18px rgba(0,0,0,.3)}
.video-card .play svg{width:28px;height:28px;margin-left:3px}
.site-footer .socials{display:inline-flex;gap:14px;align-items:center}
@media (max-width:860px){.video-btn{left:16px;bottom:16px;font-size:14px;padding:10px 14px}}
.hero .pic .hero-video iframe{height:142%;width:auto;aspect-ratio:16/9;min-width:142%;min-height:0}
/* bandeau clients accueil */
.clients-band{background:#fff}
.hl-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:0;border-top:1px solid var(--grey);border-left:1px solid var(--grey)}
.hl{height:120px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:18px 22px;border-right:1px solid var(--grey);border-bottom:1px solid var(--grey)}
.hl img{max-height:60px;max-width:100%;width:auto;object-fit:contain;filter:grayscale(1);opacity:.75;transition:filter .25s,opacity .25s}
.hl:hover img{filter:none;opacity:1}
.hl span{font-family:Archivo;font-weight:700;font-size:12px;color:var(--muted)}
.hl img+span{margin-top:0}.hl:has(span) img{max-height:40px}
@media (max-width:1024px){.hl-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (max-width:640px){.hl-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.hl{height:90px;padding:12px}.hl img{max-height:42px}}
.hl-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;border:0}
.hl{flex:0 0 calc((100% - 60px)/6);border:1px solid var(--grey);border-radius:6px;background:#fff}
@media (max-width:1024px){.hl{flex-basis:calc((100% - 36px)/4)}}
@media (max-width:640px){.hl-grid{gap:8px}.hl{flex-basis:calc((100% - 16px)/3)}}