:root{--bg:#0b0a09;--bg2:#14110e;--paper:#f5f2ec;--text:#f2e6d5;--muted:#bcb4aa;--copper:#c89a63;--line:rgba(200,154,99,.28)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;overflow-x:hidden;background:var(--bg);color:var(--text);font-family:Inter,Arial,sans-serif}.lightbox-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input,textarea{font-family:inherit}
.site-header{position:fixed;z-index:30;top:0;left:0;right:0;height:92px;display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:28px;padding:0 4vw;background:linear-gradient(to bottom,rgba(8,7,6,.96),rgba(8,7,6,.7),transparent)}
.brand img{width:235px;display:block}.nav{display:flex;justify-content:center;gap:26px;font-size:12px;text-transform:uppercase;letter-spacing:.07em}.nav a{opacity:.82}.nav a:hover{color:var(--copper);opacity:1}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:15px 22px;background:var(--copper);color:#17110c;border:1px solid var(--copper);font-weight:700;text-transform:uppercase;letter-spacing:.05em;font-size:12px;transition:.25s;cursor:pointer}.btn:hover{transform:translateY(-1px);filter:brightness(1.05)}.btn-small{padding:12px 18px}.btn-ghost{background:transparent;color:var(--text)}.menu-btn{display:none;background:none;border:0;color:var(--text);font-size:28px;cursor:pointer}

.hero{position:relative;border-bottom:1px solid var(--line)}
.hero-exact{display:block;min-height:0;aspect-ratio:1672/941;background:url('assets/hero-premium-exact.png?v=12') center top/100% 100% no-repeat}
.hero-hotspots{position:absolute;inset:0;z-index:5}
.hero-hotspots .spot{position:absolute;display:block;background:transparent}
.spot-logo{left:1.8%;top:2.6%;width:17.2%;height:9.6%}
.spot-nav-accueil{left:32.8%;top:3.9%;width:6.0%;height:6.9%}
.spot-nav-apropos{left:39.4%;top:3.9%;width:6.5%;height:6.9%}
.spot-nav-services{left:46.8%;top:3.9%;width:8.3%;height:6.9%}
.spot-nav-realisations{left:56.2%;top:3.9%;width:8.3%;height:6.9%}
.spot-nav-engagements{left:65.5%;top:3.9%;width:9.1%;height:6.9%}
.spot-nav-contact{left:75.5%;top:3.9%;width:6.2%;height:6.9%}
.spot-nav-devis{right:2.0%;top:3.8%;width:12.0%;height:6.9%}
.spot-main-cta{left:4.2%;bottom:18.2%;width:22.8%;height:10.6%}
.eyebrow,.section-kicker{color:var(--copper);text-transform:uppercase;letter-spacing:.18em;font-size:12px;font-weight:700}.section-kicker--xl{font-size:48px;line-height:1.05;letter-spacing:.10em}
h1,h2,h3{font-family:Manrope,Arial,sans-serif;margin:0}h1{font-size:clamp(44px,6vw,84px);line-height:1.02;text-transform:uppercase;letter-spacing:-.03em}h1 span{color:var(--copper)}
.lead{font-size:18px;line-height:1.7;color:var(--text);max-width:620px;margin:24px 0 34px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.trust-bar{position:absolute;z-index:3;right:4vw;bottom:28px;background:rgba(13,12,11,.93);display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);backdrop-filter:blur(8px)}
.trust-bar div{padding:24px 30px;min-width:210px;border-right:1px solid var(--line)}.trust-bar div:last-child{border-right:0}.trust-bar strong{display:block;color:var(--copper);text-transform:uppercase;font-size:12px;margin-bottom:7px}.trust-bar span{font-size:13px;color:var(--text)}
.section{padding:110px 7vw;scroll-margin-top:0}.section h2{font-size:clamp(34px,4vw,58px);line-height:1.08;margin:12px 0 25px}
.section-head{display:flex;justify-content:space-between;gap:60px;align-items:end;margin-bottom:46px}.section-head>p{max-width:440px;color:var(--muted);line-height:1.7}.services{background:#100e0c}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line)}.card{background:#15120f;padding:38px;min-height:260px}.card span{display:block;color:var(--copper);font-size:48px;line-height:1;font-weight:600}.card h3{font-size:22px;margin:45px 0 15px}.card p{color:var(--muted);line-height:1.7}
.projects{background:#12100e}.gallery{columns:4 280px;column-gap:16px}.gallery-item{display:block;width:100%;padding:0;margin:0 0 16px;border:0;background:none;cursor:pointer;break-inside:avoid;overflow:hidden}.gallery-item img{display:block;width:100%;height:auto;transition:transform .35s,filter .35s}.gallery-item:hover img{transform:scale(1.015);filter:brightness(1.05)}
.dark{background:#080706;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.commitments{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:45px}.commitments>div{padding:28px 0;border-top:1px solid var(--line)}.commitments b{color:var(--copper)}.commitments h3{margin:16px 0 10px}.commitments p{color:var(--muted);line-height:1.7}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:80px;background:var(--paper);color:#171411}.contact p{color:#5d544b;max-width:620px;line-height:1.7}form{display:grid;gap:14px}input,textarea{width:100%;padding:16px;border:1px solid #d8d0c6;background:white;font:inherit}textarea{resize:vertical}
footer{padding:38px 7vw;display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line)}footer img{width:180px}footer p{color:#8f867d;font-size:13px}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.94);display:none;align-items:center;justify-content:center;touch-action:pan-y}.lightbox.open{display:flex}.lightbox img{max-width:90vw;max-height:88vh;object-fit:contain}.lightbox button{position:absolute;border:0;background:rgba(0,0,0,.3);color:var(--text);cursor:pointer}.lightbox-close{top:22px;right:28px;font-size:42px}.lightbox-prev,.lightbox-next{top:50%;transform:translateY(-50%);font-size:60px;padding:10px 18px}.lightbox-prev{left:18px}.lightbox-next{right:18px}
.contact-direct{display:grid;gap:12px;margin-top:30px}.contact-direct>a,.contact-direct>div{display:flex;flex-direction:column;gap:5px;padding:16px 18px;border:1px solid #d8d0c6;background:#fff}.contact-direct span{font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:#8d8176}.contact-direct strong{font-size:17px;color:#171411}.contact-direct a:hover{border-color:var(--copper)}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.hp-field{position:absolute!important;left:-10000px!important;width:1px!important;height:1px!important;overflow:hidden!important}
.form-status{margin:0;padding:12px 14px;border:1px solid transparent;font-size:14px;line-height:1.5}
.form-status.success{border-color:#6f8e68;background:#edf5ea;color:#284522}.form-status.error{border-color:#b96a62;background:#fff0ed;color:#7a2821}
form .btn:disabled{cursor:wait;opacity:.7;transform:none}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px}
.hero-hotspots .spot:focus-visible{background:rgba(200,154,99,.10)}

.hero-exact .hero-content,.hero-exact .trust-bar{display:none}
.hero-brand{display:inline-flex;align-items:center;justify-content:flex-start;margin-bottom:28px;padding:0;background:transparent;border:0;backdrop-filter:none}.hero-brand img{width:min(320px,62vw);height:auto;display:block;image-rendering:auto}.gallery-item img{image-rendering:auto}

@media(min-width:1001px){
  .site-header{display:none}
}
@media(max-width:1000px){
  .site-header{grid-template-columns:1fr auto auto;height:78px}
  .brand img{width:175px}
  .nav{display:none}
  .menu-btn{display:block}
  .menu-open .nav{display:flex;position:absolute;top:78px;left:0;right:0;background:#0a0908;padding:25px;flex-direction:column}
  .hero-exact{min-height:740px;aspect-ratio:auto;display:flex;align-items:center;background:linear-gradient(90deg,rgba(5,5,5,.90) 0%,rgba(5,5,5,.62) 38%,rgba(5,5,5,.22) 68%),url('assets/hero-mobile.png') center center/cover no-repeat}
  .hero-hotspots{display:none}
  .hero-content{position:relative;z-index:2;display:block;max-width:820px;padding:120px 7vw 160px}
  .trust-bar{left:4vw;right:4vw;bottom:20px;grid-template-columns:1fr;display:grid}
  .trust-bar div{border-right:0;border-bottom:1px solid var(--line);min-width:0;padding:15px 20px}
  .grid,.commitments{grid-template-columns:1fr 1fr}
  .contact{grid-template-columns:1fr}
}
@media(max-width:640px){
  .site-header .btn-small{display:none}
  .hero-content{padding-left:6vw;padding-right:6vw;padding-bottom:250px}
  h1{font-size:42px}
  .section{padding:76px 6vw}
  .section-head{display:block}
  .grid,.commitments{grid-template-columns:1fr}
  .gallery{columns:2 145px;column-gap:10px}
  .gallery-item{margin-bottom:10px}
  footer{align-items:flex-start;gap:20px;flex-direction:column}
  .lightbox-prev,.lightbox-next{font-size:44px}
  .hero-brand img{width:min(250px,72vw)}
}


/* V9 — Mobile premium + SEO-friendly layout */
.mobile-brand{display:none}

@media(max-width:1000px){
  html{scroll-padding-top:72px}
  .site-header{
    display:grid;
    grid-template-columns:1fr auto;
    height:72px;
    padding:0 18px;
    background:rgba(9,8,7,.94);
    border-bottom:1px solid rgba(200,154,99,.18);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px)
  }
  .mobile-brand{display:block}
  .mobile-brand img{display:block;width:150px;height:auto}
  .site-header>.btn-small{display:none}
  .menu-btn{
    display:flex;align-items:center;justify-content:center;
    width:44px;height:44px;border:1px solid rgba(200,154,99,.35);
    font-size:24px;color:var(--text)
  }
  .menu-open .nav{
    top:72px;padding:24px 22px 30px;gap:0;
    background:rgba(10,9,8,.98);
    border-bottom:1px solid var(--line);
    max-height:calc(100vh - 72px);overflow-y:auto
  }
  .menu-open .nav a{
    padding:15px 4px;border-bottom:1px solid rgba(255,255,255,.07);
    font-size:13px;letter-spacing:.10em
  }

  .hero-exact{
    min-height:720px;
    display:flex;
    align-items:flex-end;
    background:
      linear-gradient(180deg,rgba(7,6,5,.10) 0%,rgba(7,6,5,.20) 30%,rgba(7,6,5,.86) 78%,rgba(7,6,5,.98) 100%),
      url('assets/hero-mobile.png') center 38%/cover no-repeat;
  }
  .hero-content{
    width:100%;max-width:none;
    padding:155px 22px 190px;
  }
  .hero-brand{display:none}
  .eyebrow{
    font-size:10px;letter-spacing:.18em;
    margin:0 0 14px
  }
  h1{
    max-width:520px;
    font-size:clamp(37px,10.5vw,52px);
    line-height:.98;
    letter-spacing:-.045em;
  }
  .lead{
    max-width:510px;
    margin:20px 0 26px;
    font-size:16px;
    line-height:1.58;
    color:var(--text)
  }
  .hero-actions{
    display:grid;grid-template-columns:1fr;
    gap:10px;max-width:430px
  }
  .hero-actions .btn{
    min-height:52px;
    padding:14px 18px;
    font-size:11px
  }
  .hero-actions .btn-ghost{
    background:rgba(10,9,8,.28);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px)
  }
  .trust-bar{
    left:18px;right:18px;bottom:18px;
    grid-template-columns:repeat(3,1fr);
    background:rgba(13,11,9,.82);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px)
  }
  .trust-bar div{
    padding:14px 10px;
    min-width:0;
    border-right:1px solid var(--line);
    border-bottom:0;
    text-align:center
  }
  .trust-bar div:last-child{border-right:0}
  .trust-bar strong{font-size:9px;margin-bottom:5px}
  .trust-bar span{font-size:10px;line-height:1.25;display:block}

  .section{padding:72px 22px}
  .section h2{
    font-size:clamp(32px,9vw,44px);
    letter-spacing:-.035em;
    margin:10px 0 20px
  }
  .section-head{margin-bottom:30px}
  .section-head>p{font-size:14px;line-height:1.6}
  .card{padding:28px 24px;min-height:auto}
  .card h3{margin:28px 0 12px;font-size:21px}
  .card p{font-size:14px}
  .projects{padding-left:14px;padding-right:14px}
  .projects .section-head{padding:0 8px}
  .gallery{columns:2;column-gap:8px}
  .gallery-item{margin-bottom:8px;border-radius:2px}
  .contact{gap:40px}
  .contact-direct>a,.contact-direct>div{padding:15px}
  input,textarea{border-radius:0;font-size:16px}
  footer{padding:30px 22px}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

@media(max-width:560px){
  .hero-exact{min-height:700px;background-position:center 34%}
  .hero-content{padding-top:145px;padding-bottom:195px}
  .trust-bar{left:12px;right:12px}
  .trust-bar div{padding:12px 6px}
  .trust-bar span{font-size:9px}
}

@media(max-width:640px){
  .section-kicker--xl{font-size:clamp(32px,10vw,40px);letter-spacing:.08em}
  .card span{font-size:48px}
}

@media(max-width:390px){
  .mobile-brand img{width:138px}
  h1{font-size:36px}
  .lead{font-size:15px}
}