/* DAQUAE — charte « Ingénierie Claire » (option C, validée le 01/11/2026) */
:root{
  --abyss:#0E2A3B; --aqua:#1F8FA8; --trame:#E3ECEE; --trame-l:#EEF4F5; --fond:#F4F9FA; --blanc:#FFFFFF;
  --sun:#D99A2B; --encre:#13232C; --doux:#536A75;
  --f-titre:"Archivo",Arial,sans-serif;
  --f-texte:"IBM Plex Sans",Arial,sans-serif;
  --f-tech:"IBM Plex Mono",ui-monospace,monospace;
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--blanc);color:var(--encre);font-family:var(--f-texte);font-size:17px;line-height:1.6}
img{max-width:100%;display:block}
a{color:inherit}
.c{max-width:var(--max);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}
h1,h2,h3{font-family:var(--f-titre);line-height:1.06;margin:0;text-wrap:balance;letter-spacing:-.02em;font-weight:500}
h1{font-size:clamp(40px,6vw,76px)}
h2{font-size:clamp(30px,3.6vw,46px)}
h3{font-size:22px;font-weight:600;letter-spacing:-.01em}
p{margin:0;max-width:66ch}
em.a{font-style:normal;color:var(--aqua)}
.eb{font-family:var(--f-tech);font-size:12.5px;letter-spacing:.08em;color:var(--aqua);text-transform:uppercase}
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--abyss);color:#fff;font-family:var(--f-texte);font-weight:600;font-size:16px;text-decoration:none;padding:13px 22px;border:1.5px solid var(--abyss);cursor:pointer}
.btn:hover{background:var(--aqua);border-color:var(--aqua)}
.btn.ghost{background:transparent;color:var(--abyss)}
.btn.ghost:hover{background:var(--abyss);color:#fff}
.btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,button:focus-visible{outline:3px solid var(--sun);outline-offset:2px}

/* En-tête */
.top{background:#fff;border-bottom:1px solid var(--trame);position:sticky;top:0;z-index:20}
.top .c{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.top img{height:20px;width:auto}
.menu{display:flex;gap:26px;align-items:center;font-size:15px}
.menu a{text-decoration:none;color:var(--encre)}
.menu a:hover,.menu a[aria-current]{color:var(--aqua)}
.menu a[aria-current]{box-shadow:inset 0 -2px 0 var(--aqua)}
.menu .client{border:1.5px solid var(--abyss);padding:7px 14px;font-weight:600}
.menu .client:hover{background:var(--abyss);color:#fff}
.burger{display:none;background:none;border:1.5px solid var(--abyss);color:var(--abyss);font:600 13px var(--f-tech);padding:6px 10px;cursor:pointer}
@media (max-width:900px){
  .burger{display:block}
  .menu{display:none;position:absolute;left:0;right:0;top:72px;background:#fff;border-bottom:1px solid var(--trame);flex-direction:column;align-items:flex-start;padding:16px 20px 24px;gap:16px}
  .menu.open{display:flex}
}

/* Héros : trame de plan technique */
.hero{background:#fff;background-image:linear-gradient(var(--trame-l) 1px,transparent 1px),linear-gradient(90deg,var(--trame-l) 1px,transparent 1px);background-size:28px 28px;border-bottom:1px solid var(--trame)}
.hero .c{padding-block:96px 76px;display:grid;gap:24px}
.hero p{font-size:19px;color:var(--doux)}
.hero .cta{display:flex;flex-wrap:wrap;gap:14px}
.hero.page .c{padding-block:68px 52px}

/* Bandeau chiffres */
.kpi{background:var(--fond);border-bottom:1px solid var(--trame)}
.kpi .c{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.kpi div{padding:26px 18px;border-left:1px solid var(--trame);display:grid;gap:4px}
.kpi div:first-child{border-left:0;padding-left:0}
.kpi b{font-family:var(--f-tech);font-weight:500;font-size:36px;line-height:1;color:var(--abyss);font-variant-numeric:tabular-nums}
.kpi span{font-size:14px;color:var(--doux)}
@media (max-width:760px){.kpi .c{grid-template-columns:repeat(2,minmax(0,1fr))}.kpi div:nth-child(3){border-left:0;padding-left:0}}

/* Sections */
.sec{padding-block:88px}
.sec.white{background:var(--fond)}
.sec.dark,.sec.water{background:var(--abyss);color:#fff}
.sec-h{display:grid;gap:14px;margin-bottom:44px}
.sec-h p{color:var(--doux);font-size:18px}
.dark .sec-h p,.water .sec-h p{color:#B7CDD4}
.dark .eb,.water .eb{color:#6FC3D6}
.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media (max-width:900px){.split,.cards{grid-template-columns:minmax(0,1fr)}}
.card{background:var(--fond);color:var(--encre);border:1px solid var(--trame);padding:26px;display:grid;gap:12px;align-content:start}
.white .card{background:#fff}
.card.big{padding:36px}
.card.eau{border-top:3px solid var(--aqua)}
.card .ref{font-family:var(--f-tech);font-size:12.5px;color:var(--aqua);display:flex;flex-wrap:wrap;gap:6px 14px}
.card ul{margin:0;padding-left:18px;display:grid;gap:4px}
.card a.more{font-weight:600;text-decoration:none;color:var(--abyss);border-bottom:2px solid var(--aqua);justify-self:start}
.card a.more::after{content:" →"}
.tbd{font-family:var(--f-tech);font-size:12px;border:1px dashed var(--sun);color:#8A5E10;padding:1px 6px}

/* Étapes EPC+F (séquence réelle) */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;padding:0;margin:0;counter-reset:s;background:rgba(255,255,255,.14)}
.steps li{list-style:none;background:var(--abyss);padding:26px 22px;display:grid;gap:10px;align-content:start;counter-increment:s}
.steps li::before{content:counter(s,decimal-leading-zero) " /";font-family:var(--f-tech);font-size:13px;color:#6FC3D6}
.steps h3{color:#fff}
.steps h3 b{color:var(--sun);font-weight:600}
.steps p{color:#B7CDD4;font-size:15.5px}
@media (max-width:900px){.steps{grid-template-columns:minmax(0,1fr)}}

/* Spécifications */
.tw{overflow-x:auto}
.spec{width:100%;border-collapse:collapse;font-size:15px;background:#fff;border:1px solid var(--trame)}
.spec th,.spec td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--trame);vertical-align:top}
.spec th{font-family:var(--f-tech);font-weight:500;font-size:12.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--doux);background:var(--fond)}
.spec td:first-child{font-weight:600}
.spec td.m{font-family:var(--f-tech);font-size:13.5px}

/* Références */
.refs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media (max-width:900px){.refs{grid-template-columns:minmax(0,1fr)}}
.refc{background:#fff;border:1px solid var(--trame);display:grid;align-content:start}
.refc .vis{aspect-ratio:16/9;background:var(--fond);background-image:linear-gradient(var(--trame) 1px,transparent 1px),linear-gradient(90deg,var(--trame) 1px,transparent 1px);background-size:20px 20px;display:flex;align-items:flex-end;padding:14px;color:var(--abyss);font-family:var(--f-tech);font-size:12px}
.refc .vis.eau{color:var(--aqua)}
.refc .t{padding:20px;display:grid;gap:6px}
.refc .pays{font-family:var(--f-tech);font-size:12px;color:var(--doux);text-transform:uppercase;letter-spacing:.06em}

/* Bandeau CTA */
.band{background:var(--fond);border-top:1px solid var(--trame)}
.band .c{padding-block:56px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:24px}

/* Formulaires */
form.f{display:grid;gap:16px;background:#fff;padding:30px;border:1px solid var(--trame);border-top:3px solid var(--aqua)}
.f .row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media (max-width:640px){.f .row{grid-template-columns:minmax(0,1fr)}}
.f label{display:grid;gap:6px;font-size:14px;font-weight:600}
.f input,.f textarea,.f select{font:inherit;font-weight:400;padding:12px 14px;border:1px solid #C5D5DA;background:var(--fond);color:var(--encre);border-radius:0;width:100%}
.f textarea{min-height:140px;resize:vertical}
.f .consent{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:13.5px}
.f .consent input{width:auto;margin-top:4px}
.f button{justify-self:start}
.msg{font-size:15px;font-weight:600}
.msg.ok{color:#1E6B3A}.msg.err{color:#A3281B}
.hp{position:absolute;left:-9999px}

/* Pied de page */
.foot{background:var(--encre);color:#A9BCC3;font-size:14.5px}
.foot .c{padding-block:56px 28px;display:grid;gap:36px}
.foot .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:28px}
@media (max-width:900px){.foot .cols{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
@media (max-width:520px){.foot .cols{grid-template-columns:minmax(0,1fr)}}
.foot h4{font-family:var(--f-tech);font-weight:500;text-transform:uppercase;letter-spacing:.08em;color:#fff;margin:0 0 10px;font-size:12.5px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot a{text-decoration:none}.foot a:hover{color:#6FC3D6}
.foot img{height:18px;width:auto;margin-bottom:14px}
.foot form{display:flex;margin-top:10px}
.foot form input{flex:1;min-width:0;font:inherit;padding:10px 12px;border:0;background:#1E3440;color:#fff}
.foot form button{background:var(--aqua);color:#fff;border:0;font:600 14px var(--f-texte);padding:0 16px;cursor:pointer}
.foot .legal{border-top:1px solid #23394A;padding-top:18px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px}
.foot .nl-msg{font-size:13px;margin-top:6px;min-height:1em}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.split > .card.big:not(.eau){border-top:3px solid var(--abyss)}
@media (max-width:900px){.steps[style]{grid-template-columns:minmax(0,1fr)!important}.split .cards[style]{grid-template-columns:minmax(0,1fr)!important}}
.steps.six{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.steps.six{grid-template-columns:minmax(0,1fr)}}

/* Photos */
.ph{position:relative;margin:0;overflow:hidden;max-width:100%;background:var(--fond);background-image:linear-gradient(var(--trame) 1px,transparent 1px),linear-gradient(90deg,var(--trame) 1px,transparent 1px);background-size:20px 20px}
.ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ph figcaption{position:absolute;left:0;bottom:0;right:0;padding:18px 12px 8px;font-family:var(--f-tech);font-size:11.5px;color:#fff;background:linear-gradient(transparent,rgba(14,42,59,.78))}
.card .ph{margin:-26px -26px 6px}
.card.big .ph{margin:-36px -36px 8px}
.refc .ph{border-bottom:1px solid var(--trame)}
.hero-ph{margin-top:16px}
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
@media (max-width:760px){.gallery{grid-template-columns:repeat(2,minmax(0,1fr))}}
.card .ph{width:calc(100% + 52px)}
.card.big .ph{width:calc(100% + 72px)}

/* Vidéos et catalogue */
.hero-vid{margin:16px 0 0;position:relative;aspect-ratio:21/9;max-width:100%;overflow:hidden;background:var(--abyss)}
.hero-vid video{width:100%;height:100%;object-fit:cover;display:block}
.hero-vid figcaption{position:absolute;left:0;bottom:0;padding:10px 14px;font-family:var(--f-tech);font-size:12px;color:#fff;background:rgba(14,42,59,.7)}
.vids{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.vids.one{grid-template-columns:minmax(0,1fr)}
@media (max-width:760px){.vids{grid-template-columns:minmax(0,1fr)}}
.vid{margin:0;background:#fff;border:1px solid var(--trame);display:grid}
.vid video{width:100%;aspect-ratio:16/9;background:var(--abyss);display:block}
.vid figcaption{padding:14px 16px;display:grid;gap:4px;font-size:15px}
.vid figcaption span{color:var(--doux);font-size:14px}
.card.prod{background:#fff;gap:10px}
.prod .pimg{margin:-26px -26px 6px;width:calc(100% + 52px);aspect-ratio:4/3;background:#fff;border-bottom:1px solid var(--trame);display:flex;align-items:center;justify-content:center;overflow:hidden}
.prod .pimg img{max-width:100%;max-height:100%;object-fit:contain}
.prod .pimg:empty{background:var(--fond);background-image:linear-gradient(var(--trame) 1px,transparent 1px),linear-gradient(90deg,var(--trame) 1px,transparent 1px);background-size:20px 20px}
.specs{list-style:none;margin:4px 0 0;padding:10px 0 0;border-top:1px dashed var(--trame);display:grid;gap:4px;font-family:var(--f-tech);font-size:12.5px;color:var(--abyss)}
.specs li::before{content:"› ";color:var(--aqua)}
.split > .ph{align-self:center}
.sec-h ul{margin:0;padding-left:18px;display:grid;gap:6px}
.menu{gap:20px}

.build{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;counter-reset:b}
.build li{display:grid;gap:4px;counter-increment:b}
.build li .ph{margin-bottom:8px}
.build b::before{content:counter(b,decimal-leading-zero) "  ";font-family:var(--f-tech);font-weight:400;color:#6FC3D6}
.build span{color:#B7CDD4;font-size:15px}
@media (max-width:760px){.build{grid-template-columns:minmax(0,1fr)}}

.cards.four{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.cards.four{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.cards.four{grid-template-columns:minmax(0,1fr)}}
/* Constructions métalliques */
.split.three{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.split.three{grid-template-columns:minmax(0,1fr)}}
.ph figcaption .credit{display:block;font-size:11px;opacity:.8;margin-top:2px}