:root{
  --bg:#050505;
  --panel:#0d0d0d;
  --panel2:#111214;
  --line:rgba(255,255,255,.12);
  --line2:rgba(255,255,255,.22);
  --text:#f4f1eb;
  --muted:#c0b7ad;
  --soft:#8b8379;
  --accent:#c9823d;
  --max:1440px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;letter-spacing:.01em}
a{color:inherit;text-decoration:none} img{display:block;max-width:100%}
.header{position:sticky;top:0;z-index:50;background:rgba(5,5,5,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}
.header-inner{max-width:var(--max);margin:auto;padding:26px 48px 20px;display:flex;justify-content:space-between;align-items:center;gap:34px}
.brand-title{font-size:clamp(28px,3vw,43px);line-height:1;font-weight:300;letter-spacing:.24em}
.brand-sub{margin-top:7px;color:var(--accent);text-transform:uppercase;letter-spacing:.28em;font-size:13px}
.nav{display:flex;align-items:center;gap:clamp(18px,2.8vw,42px);text-transform:uppercase;letter-spacing:.12em;font-size:12px}
.nav a{position:relative;padding:10px 0;color:#eee8df}.nav a:hover,.nav a.active{color:var(--accent)}
.nav a:hover:after,.nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent)}
.nav-item{position:relative}.dropdown{position:absolute;top:100%;left:-18px;min-width:190px;padding:12px 18px;background:#090909;border:1px solid var(--line);opacity:0;pointer-events:none;transform:translateY(8px);transition:.18s ease}
.nav-item:hover .dropdown,.nav-item:focus-within .dropdown{opacity:1;pointer-events:auto;transform:none}.dropdown a{display:block;padding:10px 0}.menu{display:none;border:1px solid var(--line2);background:transparent;color:var(--text);padding:10px 14px;text-transform:uppercase;letter-spacing:.12em}

.gs-hero{position:relative;min-height:760px;overflow:hidden;border-bottom:1px solid var(--line);background:#050505;isolation:isolate}
.gs-hero__image{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;z-index:-2;filter:brightness(.82) contrast(1.06)}
.gs-hero:before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(5,5,5,.98) 0%,rgba(5,5,5,.84) 34%,rgba(5,5,5,.20) 68%,rgba(5,5,5,.42) 100%)}
.gs-hero__inner{max-width:var(--max);min-height:760px;margin:auto;padding:120px 48px 86px;display:flex;align-items:center}
.gs-hero__copy{max-width:570px}.eyebrow{margin:0 0 16px;color:var(--accent);text-transform:uppercase;letter-spacing:.17em;font-size:12px;font-weight:600}
h1{margin:0;font-size:clamp(50px,6vw,88px);font-weight:300;line-height:1.04;letter-spacing:.08em;text-transform:uppercase}.line{width:72px;height:2px;background:var(--accent);margin:30px 0}
.lead{margin:0 0 26px;color:#eee8df;font-size:clamp(20px,2vw,29px);line-height:1.5;font-weight:300}.hero-copy{margin:0;color:#d0c8be;font-size:17px;line-height:1.78}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}.hero-tags span{padding:9px 12px;border:1px solid rgba(201,130,61,.42);color:#d8d0c7;background:rgba(201,130,61,.035);font-size:11px;letter-spacing:.1em;text-transform:uppercase}

.page-main{max-width:var(--max);margin:auto;border-left:1px solid var(--line);border-right:1px solid var(--line)}
.gs-section{padding:88px 48px;border-bottom:1px solid var(--line)}
.gs-intro{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr);gap:80px}.gs-intro h2,.project-copy h2,.measure-head h2,.spec-title h2{margin:0;font-size:clamp(34px,3.8vw,58px);line-height:1.08;font-weight:300;letter-spacing:.06em;text-transform:uppercase}
.rich p,.project-copy p,.measure-head p{margin:0 0 20px;color:#d3cbc1;line-height:1.82;font-size:17px}

.prototype-grid{display:grid;grid-template-columns:minmax(310px,.9fr) minmax(0,1.1fr);gap:76px;align-items:center;background:radial-gradient(circle at 8% 25%,rgba(201,130,61,.08),transparent 28%)}
.prototype-frame{margin:0;padding:12px;border:1px solid var(--line);background:#090909}.prototype-frame img{width:100%;aspect-ratio:4/5;object-fit:cover}.prototype-frame figcaption{padding:12px 2px 0;color:var(--soft);font-size:11px;letter-spacing:.11em;text-transform:uppercase}
.mini-line{width:44px;height:2px;background:var(--accent);margin:24px 0 28px}.signal-note{display:grid;grid-template-columns:90px 1fr;gap:20px;align-items:center;margin-top:30px;padding:20px 0;border-top:1px solid rgba(201,130,61,.4);border-bottom:1px solid rgba(201,130,61,.18)}.signal-note svg{width:90px;fill:none;stroke:var(--accent);stroke-width:2}.signal-note p{margin:0;font-size:14px}

.measure-head{max-width:800px;margin-bottom:46px}.tools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line)}.tool{min-height:310px;padding:34px;background:#090909}.tool__index{display:block;margin-bottom:66px;color:var(--accent);font-size:12px;letter-spacing:.16em}.tool h3{margin:0 0 15px;font-size:25px;font-weight:400;letter-spacing:.06em;text-transform:uppercase}.tool p{margin:0;color:var(--muted);line-height:1.7;font-size:15px}

.spec-grid{display:grid;grid-template-columns:minmax(260px,.75fr) minmax(0,1.25fr);gap:80px}.spec-list{margin:0;border-top:1px solid var(--line)}.spec-list div{display:grid;grid-template-columns:1fr auto;gap:30px;padding:18px 0;border-bottom:1px solid var(--line)}.spec-list dt{color:var(--muted)}.spec-list dd{margin:0;text-align:right;color:#f0ece6}
.project-link{display:inline-flex;margin-top:28px;padding:14px 22px;border:1px solid var(--accent);color:var(--accent);text-transform:uppercase;letter-spacing:.12em;font-size:12px}.project-link:hover{background:var(--accent);color:#070707}
.closing{padding:82px 48px;text-align:center;background:radial-gradient(circle at center,rgba(201,130,61,.08),transparent 34%)}.closing p{margin:0;color:#ddd5cb;letter-spacing:.2em;text-transform:uppercase;font-size:13px}.closing .line{width:44px;margin:20px auto 0}
.footer{padding:30px 48px;border-top:1px solid var(--line);color:#837b72;text-align:center;font-size:12px;letter-spacing:.12em;text-transform:uppercase}

@media(max-width:980px){
 .header-inner{min-height:76px;padding:15px 24px!important;display:grid!important;grid-template-columns:minmax(0,1fr) auto!important}.brand-title{font-size:clamp(20px,6vw,28px)!important;letter-spacing:.17em!important}.brand-sub{font-size:9px!important;letter-spacing:.18em!important}.menu{display:inline-flex!important;align-items:center;justify-content:center;min-height:42px}.header .nav{position:fixed!important;inset:76px 0 auto 0!important;width:100%!important;max-height:calc(100dvh - 76px);overflow-y:auto;margin:0!important;padding:16px 24px 28px!important;display:none!important;flex-direction:column!important;align-items:stretch!important;gap:0!important;background:rgba(8,9,10,.985);border-bottom:1px solid rgba(255,255,255,.14)}.header .nav.open{display:flex!important}.header .nav>a,.header .nav>.nav-item>a{width:100%;padding:15px 0!important;border-bottom:1px solid rgba(255,255,255,.09)}.header .nav a:after{display:none!important}.header .nav .dropdown{position:static!important;transform:none!important;min-width:0!important;padding:0 0 7px 14px!important;border:0!important;background:transparent!important;opacity:1!important;pointer-events:auto!important}.header .nav .dropdown a{display:block!important;padding:11px 0!important;color:var(--muted)}
 .gs-hero{min-height:680px}.gs-hero__image{object-position:66% center}.gs-hero:before{background:linear-gradient(180deg,rgba(5,5,5,.08) 0%,rgba(5,5,5,.26) 42%,rgba(5,5,5,.97) 88%),linear-gradient(90deg,rgba(5,5,5,.58),rgba(5,5,5,.04))}.gs-hero__inner{min-height:680px;padding:300px 24px 48px;align-items:flex-end}.gs-hero__copy{max-width:680px}
 .gs-intro,.prototype-grid,.spec-grid{grid-template-columns:1fr;gap:38px}.tools{grid-template-columns:1fr}.tool{min-height:0}.tool__index{margin-bottom:34px}
}
@media(max-width:680px){
 .gs-hero{min-height:640px}.gs-hero__inner{min-height:640px;padding:260px 20px 40px}h1{font-size:clamp(42px,14vw,62px)}.lead{font-size:21px}.hero-copy{font-size:15px}.hero-tags{display:grid}.gs-section{padding:66px 20px}.prototype-frame{padding:8px}.prototype-frame img{aspect-ratio:1/1.18}.signal-note{grid-template-columns:1fr}.tool{padding:27px}.spec-list div{grid-template-columns:1fr;gap:5px}.spec-list dd{text-align:left}.closing{padding:64px 20px}.footer{padding:26px 20px}
}


/* Stage Prime — mise en page principale validée */
.sp-hero{
  position:relative;
  min-height:700px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:#050607;
  isolation:isolate
}
.sp-hero__image{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
  z-index:-3;
  filter:none
}
.sp-hero__overlay{
  position:absolute;
  inset:0;
  z-index:-2;
  background:
    linear-gradient(
      90deg,
      rgba(3,4,5,.99) 0%,
      rgba(3,4,5,.96) 23%,
      rgba(3,4,5,.82) 37%,
      rgba(3,4,5,.40) 52%,
      rgba(3,4,5,.08) 70%,
      rgba(3,4,5,.10) 100%
    ),
    linear-gradient(
      180deg,
      rgba(3,4,5,.02) 0%,
      rgba(3,4,5,.04) 72%,
      rgba(3,4,5,.28) 100%
    )
}
.sp-hero__inner{
  position:relative;
  z-index:1;
  max-width:var(--max);
  min-height:700px;
  margin:auto;
  padding:92px 48px 68px;
  display:flex;
  align-items:center
}
.sp-hero__copy{
  width:min(540px,45vw);
  max-width:540px;
  padding:26px 30px 26px 0;
  text-shadow:0 2px 18px rgba(0,0,0,.68)
}

.sp-feature-strip{border-bottom:1px solid var(--line);background:#030303}
.sp-feature-grid{max-width:var(--max);margin:auto;display:grid;grid-template-columns:repeat(6,minmax(0,1fr))}
.sp-feature{min-height:245px;padding:32px 24px 28px;text-align:center;border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:center}
.sp-feature:first-child{border-left:1px solid var(--line)}
.sp-feature svg{width:52px;height:52px;margin-bottom:18px;fill:none;stroke:#e0a641;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.sp-feature h2{margin:0 0 10px;font-size:15px;line-height:1.45;font-weight:500;letter-spacing:.06em;text-transform:uppercase}
.sp-feature p{margin:0;color:#aaa198;font-size:13px;line-height:1.65}

.sp-philosophy{border-bottom:1px solid var(--line);background:linear-gradient(90deg,#0a0a0a,#0d0d0d)}
.sp-philosophy__inner{max-width:var(--max);margin:auto;padding:54px 48px;display:grid;grid-template-columns:minmax(280px,.85fr) minmax(0,1.15fr);gap:70px;align-items:center}
.sp-philosophy h2{margin:0;font-size:clamp(28px,3.2vw,47px);font-weight:300;line-height:1.1;letter-spacing:.02em}
.sp-philosophy p{margin:0;padding-left:36px;border-left:1px solid var(--line2);color:#c9c1b7;font-size:16px;line-height:1.8}

@media(max-width:1180px){
 .sp-feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
 .sp-feature:nth-child(3){border-right:0}.sp-feature:nth-child(n+4){border-top:1px solid var(--line)}
 .sp-feature:nth-child(4){border-left:1px solid var(--line)}
}
@media(max-width:980px){
 .sp-hero{min-height:700px}
 .sp-hero__image{
   top:0;
   right:-12%;
   width:112%;
   height:62%;
   object-position:67% center
 }
 .sp-hero__overlay{
   background:
     linear-gradient(180deg,
       rgba(5,5,5,.02) 0%,
       rgba(5,5,5,.12) 32%,
       rgba(5,5,5,.68) 53%,
       rgba(5,5,5,.97) 72%,
       #050505 100%),
     linear-gradient(90deg,rgba(5,5,5,.50),rgba(5,5,5,.02))
 }
 .sp-hero__inner{
   min-height:700px;
   padding:300px 24px 48px;
   align-items:flex-end
 }
 .sp-hero__copy{
   max-width:700px;
   padding:0
 }
 .sp-philosophy__inner{grid-template-columns:1fr;gap:24px;padding:48px 24px}.sp-philosophy p{padding-left:0;padding-top:24px;border-left:0;border-top:1px solid var(--line2)}
}
@media(max-width:680px){
 .sp-hero{min-height:680px}
 .sp-hero__image{
   right:-24%;
   width:135%;
   height:54%;
   object-position:66% center
 }
 .sp-hero__inner{
   min-height:680px;
   padding:270px 20px 38px
 }
 .sp-hero__copy{padding:0}
 .sp-feature-grid{grid-template-columns:1fr 1fr}
 .sp-feature{min-height:230px;padding:26px 16px}.sp-feature:nth-child(n){border-top:1px solid var(--line);border-right:1px solid var(--line);border-left:0}.sp-feature:nth-child(-n+2){border-top:0}.sp-feature:nth-child(odd){border-left:1px solid var(--line)}
 .sp-feature h2{font-size:13px}.sp-feature p{font-size:12px}.sp-feature svg{width:44px;height:44px}
 .sp-philosophy__inner{padding:44px 20px}
}


/* HERO STAGE PRIME — TABLETTE */
@media(max-width:980px){
  .sp-hero{
    min-height:760px
  }
  .sp-hero__image{
    inset:0;
    width:100%;
    height:100%;
    object-fit:cover;
    object-position:67% center
  }
  .sp-hero__overlay{
    background:
      linear-gradient(
        180deg,
        rgba(3,4,5,.04) 0%,
        rgba(3,4,5,.12) 36%,
        rgba(3,4,5,.72) 60%,
        rgba(3,4,5,.97) 78%,
        #050607 100%
      ),
      linear-gradient(90deg,rgba(3,4,5,.46),rgba(3,4,5,.02))
  }
  .sp-hero__inner{
    min-height:760px;
    padding:340px 24px 52px;
    align-items:flex-end
  }
  .sp-hero__copy{
    width:100%;
    max-width:700px;
    padding:0
  }
}

/* HERO STAGE PRIME — GSM */
@media(max-width:680px){
  .sp-hero{
    min-height:730px
  }
  .sp-hero__image{
    object-position:69% top
  }
  .sp-hero__inner{
    min-height:730px;
    padding:300px 20px 40px
  }
  .sp-hero__copy{
    width:100%;
    max-width:none;
    padding:0
  }
}