/* =========================================================
   SET — Société d'Étude Technique
   Direction : « planche de dessin technique »
   Encre marine dominante, papier calque, grille bleu,
   traits de cote, cartouches, mono d'annotation.
   ========================================================= */

/* ---------- TOKENS ---------- */
:root{
  /* Palette extraite du logo & de la plaquette */
  --ink:        #09213B;   /* marine du logo */
  --ink-2:      #0D2C4D;
  --ink-deep:   #05131F;
  --steel:      #3A6B96;   /* bleu acier du logo */
  --steel-lt:   #6C9BC4;
  --silver:     #85868A;
  --paper:      #F5F7F9;
  --paper-2:    #EBEFF4;
  --paper-blue: #D5DEE7;
  --white:      #FFFFFF;

  --line-dark:  rgba(255,255,255,.13);
  --line-light: rgba(9,33,59,.13);

  --f-disp: 'Archivo', 'Helvetica Neue', Arial, sans-serif;
  --f-body: 'IBM Plex Sans', 'Segoe UI', Arial, sans-serif;
  --f-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --wrap: 1240px;
  --pad: clamp(1.15rem, 4vw, 3rem);
  --sec-y: clamp(4.5rem, 10vw, 8.5rem);

  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

/* ---------- RESET ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--f-body);
  font-size:clamp(.97rem,.93rem + .18vw,1.06rem);
  line-height:1.68;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,p,figure,blockquote,dl,dd{ margin:0; }
button,input,select,textarea{ font:inherit; color:inherit; }
svg{ width:100%; height:100%; fill:none; stroke:currentColor;
     stroke-width:1.6; stroke-linecap:round; stroke-linejoin:round; }
::selection{ background:var(--steel); color:#fff; }

.skip{
  position:absolute; left:-9999px; top:0; z-index:999;
  background:var(--ink); color:#fff; padding:.85rem 1.3rem;
  font-family:var(--f-mono); font-size:.8rem;
}
.skip:focus{ left:.5rem; top:.5rem; }

:focus-visible{ outline:2px solid var(--steel-lt); outline-offset:3px; border-radius:2px; }

.wrap{ width:100%; max-width:var(--wrap); margin-inline:auto; padding-inline:var(--pad); }

/* ---------- TYPO ---------- */
.h2{
  font-family:var(--f-disp);
  font-weight:800;
  font-stretch:92%;
  font-size:clamp(2.1rem,1.25rem + 3.9vw,4rem);
  line-height:.98;
  letter-spacing:-.028em;
  text-wrap:balance;
}
.h2 em{
  font-style:normal;
  color:var(--steel);
  position:relative;
  display:inline-block;
}
.h2 em::after{
  content:""; position:absolute; left:0; right:0; bottom:.06em;
  height:.11em; background:currentColor; opacity:.24;
}
.sec--ink .h2 em, .sec--cta .h2 em{ color:var(--steel-lt); }

.mini-title{
  font-family:var(--f-mono);
  font-size:.72rem; font-weight:600;
  letter-spacing:.24em; text-transform:uppercase;
  color:var(--steel);
  margin:clamp(3.5rem,7vw,5.5rem) 0 1.9rem;
  padding-bottom:.85rem;
  border-bottom:1px solid var(--line-light);
}

/* trait de cote : ─┤ label ├─ */
.dim{
  display:flex; align-items:center; gap:1rem;
  margin-bottom:clamp(2rem,4vw,3.2rem);
}
.dim i{ flex:1; height:1px; background:var(--line-light); position:relative; }
.dim i::before,.dim i::after{
  content:""; position:absolute; top:-3px; width:1px; height:7px; background:var(--line-light);
}
.dim i::before{ left:0; } .dim i::after{ right:0; }
.dim i:first-child{ max-width:38px; }
.dim span{
  font-family:var(--f-mono); font-size:.7rem; font-weight:600;
  letter-spacing:.2em; text-transform:uppercase; color:var(--steel);
  white-space:nowrap;
}
.dim--light i{ background:var(--line-dark); }
.dim--light i::before,.dim--light i::after{ background:var(--line-dark); }
.dim--light span{ color:var(--steel-lt); }

.tag{
  display:inline-flex; align-items:center; gap:.65rem;
  font-family:var(--f-mono); font-size:.7rem; font-weight:500;
  letter-spacing:.18em; text-transform:uppercase;
  color:rgba(255,255,255,.72);
  border:1px solid var(--line-dark);
  padding:.5rem .95rem .5rem .8rem;
  border-radius:2px;
  background:rgba(255,255,255,.03);
}
.tag__dot{
  width:6px; height:6px; border-radius:50%; background:var(--steel-lt);
  box-shadow:0 0 0 0 rgba(108,155,196,.6);
  animation:pulse 2.6s infinite;
  flex:none;
}
@keyframes pulse{
  0%{ box-shadow:0 0 0 0 rgba(108,155,196,.55); }
  70%{ box-shadow:0 0 0 9px rgba(108,155,196,0); }
  100%{ box-shadow:0 0 0 0 rgba(108,155,196,0); }
}

/* ---------- BOUTONS ---------- */
.btn{
  --bg:var(--steel);
  position:relative; overflow:hidden;
  display:inline-flex; align-items:center; justify-content:center; gap:.7rem;
  padding:1rem 1.7rem;
  background:var(--bg); color:#fff;
  font-family:var(--f-mono); font-size:.76rem; font-weight:600;
  letter-spacing:.13em; text-transform:uppercase;
  border:1px solid var(--bg); border-radius:2px; cursor:pointer;
  transition:transform .35s var(--ease-out), box-shadow .35s var(--ease-out), background .3s;
  isolation:isolate;
}
.btn::before{
  content:""; position:absolute; inset:0; z-index:-1;
  background:var(--ink);
  transform:translateY(101%);
  transition:transform .45s var(--ease-out);
}
.btn:hover::before{ transform:translateY(0); }
.btn:hover{ transform:translateY(-2px); box-shadow:0 12px 28px -12px rgba(9,33,59,.55); }
.btn svg{ width:16px; height:16px; flex:none; transition:transform .35s var(--ease-out); }
.btn:hover svg{ transform:translateX(4px); }
.btn--sm{ padding:.72rem 1.15rem; font-size:.7rem; }
.btn--full{ width:100%; }
.btn--ghost{
  background:transparent; color:#fff; border-color:var(--line-dark);
}
.btn--ghost::before{ background:rgba(255,255,255,.1); }
.btn--ghost:hover{ border-color:rgba(255,255,255,.4); }

/* =========================================================
   HEADER
   ========================================================= */
.hdr{
  position:fixed; inset:0 0 auto 0; z-index:100;
  transition:background .4s var(--ease), border-color .4s, backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
.hdr.is-stuck{
  background:rgba(6,20,34,.9);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  border-bottom-color:var(--line-dark);
}
.hdr__inner{
  max-width:var(--wrap); margin-inline:auto;
  padding:0 var(--pad);
  height:clamp(64px,7vw,86px);
  display:flex; align-items:center; gap:1.5rem;
}
.hdr__logo{ flex:none; }
.hdr__logo img{
  height:clamp(30px,3.4vw,42px); width:auto;
  filter:brightness(0) invert(1);
  transition:filter .4s;
}
.hdr__bar{
  height:2px; width:0%; background:var(--steel-lt);
  transition:width .1s linear;
}

.nav{ display:flex; gap:.35rem; margin-left:auto; }
.nav a{
  position:relative;
  padding:.55rem .85rem;
  font-size:.85rem; font-weight:500; color:rgba(255,255,255,.78);
  border-radius:2px;
  transition:color .25s, background .25s;
}
.nav a:hover, .nav a.is-active{ color:#fff; background:rgba(255,255,255,.07); }

.hdr__act{ display:flex; align-items:center; gap:.85rem; flex:none; }
.tel{
  display:inline-flex; align-items:center; gap:.5rem;
  font-family:var(--f-mono); font-size:.78rem; font-weight:500;
  color:rgba(255,255,255,.8); letter-spacing:.02em;
  transition:color .25s;
}
.tel:hover{ color:#fff; }
.tel svg{ width:15px; height:15px; fill:currentColor; stroke:none; color:var(--steel-lt); }

.burger{
  display:none; width:40px; height:40px; padding:9px;
  background:none; border:1px solid var(--line-dark); border-radius:2px;
  flex-direction:column; justify-content:space-between; cursor:pointer;
}
.burger span{ display:block; height:1.5px; width:100%; background:#fff;
  transition:transform .35s var(--ease-out), opacity .25s; }
.burger[aria-expanded="true"] span:nth-child(1){ transform:translateY(9.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.burger[aria-expanded="true"] span:nth-child(3){ transform:translateY(-9.5px) rotate(-45deg); }

/* défilement bloqué quand le menu mobile est ouvert */
body.nav-open{ overflow:hidden; }

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative;
  background:var(--ink-deep);
  color:#fff;
  padding-top:clamp(8.5rem,15vw,11.5rem);
  padding-bottom:clamp(4rem,8vw,7rem);
  overflow:hidden;
  isolation:isolate;
}
/* grille de calque */
.hero__grid-bg, .sec__grid-bg{
  position:absolute; inset:0; z-index:-2; pointer-events:none;
  background-image:
    linear-gradient(rgba(108,155,196,.11) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,155,196,.11) 1px, transparent 1px),
    linear-gradient(rgba(108,155,196,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,155,196,.05) 1px, transparent 1px);
  background-size:120px 120px,120px 120px,24px 24px,24px 24px;
  -webkit-mask-image:radial-gradient(120% 90% at 70% 10%, #000 0%, transparent 72%);
  mask-image:radial-gradient(120% 90% at 70% 10%, #000 0%, transparent 72%);
}
.hero__glow{
  position:absolute; z-index:-1; pointer-events:none;
  width:min(120vw,1400px); aspect-ratio:1;
  top:-55%; right:-25%;
  background:radial-gradient(circle, rgba(58,107,150,.34) 0%, rgba(58,107,150,.09) 38%, transparent 66%);
  filter:blur(30px);
}
.hero::after{ /* grain */
  content:""; position:absolute; inset:0; z-index:-1; pointer-events:none; opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.045'/%3E%3C/svg%3E");
}

.hero__wrap{
  display:grid; gap:clamp(2.5rem,4.5vw,4rem);
  grid-template-columns:minmax(0,1.16fr) minmax(0,.84fr);
  align-items:center;
}
.hero__h1{
  font-family:var(--f-disp);
  font-weight:800; font-stretch:86%;
  font-size:clamp(2.5rem,1.1rem + 5.6vw,4.8rem);
  line-height:.94; letter-spacing:-.035em;
  margin:1.6rem 0 0;
}
.hero__h1 span{ display:block; }
.hero__h1 .em{
  color:var(--steel-lt);
  font-style:italic; font-stretch:76%;
}
.hero__lede{
  max-width:37rem; margin-top:1.5rem;
  font-size:clamp(1rem,.95rem + .3vw,1.16rem);
  font-weight:300; line-height:1.72;
  color:rgba(255,255,255,.76);
}
.hero__lede strong{ color:#fff; font-weight:500; }
.hero__cta{ display:flex; flex-wrap:wrap; gap:.85rem; margin-top:2.2rem; }

.hero__stats{
  display:grid; grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1.4rem;
  margin-top:clamp(2.6rem,5vw,3.6rem);
  padding-top:1.7rem;
  border-top:1px solid var(--line-dark);
}
.hero__stats dt{
  font-family:var(--f-disp); font-weight:800; font-stretch:84%;
  font-size:clamp(1.6rem,1rem + 1.9vw,2.5rem);
  line-height:1; letter-spacing:-.03em; color:#fff;
  font-variant-numeric:tabular-nums;
}
.hero__stats dt.nc{ font-size:clamp(1.35rem,.95rem + 1.3vw,2rem); color:var(--steel-lt); }
.hero__stats dd{
  margin-top:.5rem;
  font-family:var(--f-mono); font-size:.66rem; font-weight:500;
  letter-spacing:.11em; text-transform:uppercase; line-height:1.55;
  color:rgba(255,255,255,.5);
}

.hero__media{ position:relative; }

/* cadre technique + repères d'angle */
.frame{ position:relative; }
.frame__mark{
  position:absolute; width:16px; height:16px; z-index:3;
  border-color:var(--steel-lt); border-style:solid; border-width:0;
}
.frame__mark--tl{ top:-6px; left:-6px; border-top-width:1.5px; border-left-width:1.5px; }
.frame__mark--tr{ top:-6px; right:-6px; border-top-width:1.5px; border-right-width:1.5px; }
.frame__mark--bl{ bottom:-6px; left:-6px; border-bottom-width:1.5px; border-left-width:1.5px; }
.frame__mark--br{ bottom:-6px; right:-6px; border-bottom-width:1.5px; border-right-width:1.5px; }
.frame__img{
  position:relative; overflow:hidden; border-radius:2px;
  border:1px solid var(--line-dark);
  background:var(--ink);
}
.frame__img img{
  width:100%; height:100%; object-fit:cover;
  transition:transform 1.1s var(--ease-out);
}
.frame:hover .frame__img img{ transform:scale(1.04); }
.frame--tall .frame__img{ aspect-ratio:3/4; }
.frame__cap{
  display:flex; justify-content:space-between; gap:1rem;
  margin-top:.75rem;
  font-family:var(--f-mono); font-size:.62rem; font-weight:500;
  letter-spacing:.14em; text-transform:uppercase;
  color:rgba(255,255,255,.42);
}
.frame__cap span:first-child{ color:var(--steel-lt); }
.sec--paper .frame__img{ border-color:var(--line-light); }
.sec--paper .frame__cap{ color:rgba(9,33,59,.42); }
.sec--paper .frame__cap span:first-child{ color:var(--steel); }
.sec--paper .frame__mark{ border-color:var(--steel); }

/* duotone marine sur les photos (sections encre) */
.duo{ position:relative; }
.duo img{ filter:grayscale(1) contrast(1.06) brightness(.95); }
.duo::after{
  content:""; position:absolute; inset:0; z-index:2; pointer-events:none;
  background:linear-gradient(150deg, rgba(9,33,59,.72) 0%, rgba(58,107,150,.42) 100%);
  mix-blend-mode:multiply;
}
/* variante douce : sections papier, garde de l'air */
.duo--soft img{ filter:grayscale(.72) contrast(1.03) brightness(1.02); }
.duo--soft::after{
  background:linear-gradient(160deg, rgba(9,33,59,.26) 0%, rgba(58,107,150,.14) 100%);
}

/* cartouche façon bloc-titre de plan */
.cartouche{
  position:absolute; right:0; bottom:-2.6rem;
  width:min(300px,86%);
  background:rgba(6,20,34,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border:1px solid var(--line-dark);
  border-radius:2px;
  box-shadow:0 26px 50px -22px rgba(0,0,0,.75);
}
.cartouche__row{
  display:flex; align-items:center; justify-content:space-between; gap:.9rem;
  padding:.62rem .95rem;
  border-bottom:1px solid var(--line-dark);
  font-family:var(--f-mono); font-size:.63rem; letter-spacing:.06em;
}
.cartouche__row:last-child{ border-bottom:0; }
.cartouche__row span{ color:rgba(255,255,255,.42); text-transform:uppercase; letter-spacing:.14em; }
.cartouche__row b{ color:#fff; font-weight:500; text-align:right; }
.cartouche__row--hl{ background:var(--steel); }
.cartouche__row--hl span{ color:rgba(255,255,255,.75); }

.scroll-hint{
  position:absolute; left:var(--pad); bottom:1.5rem;
  display:flex; align-items:center; gap:.6rem;
  font-family:var(--f-mono); font-size:.6rem; letter-spacing:.24em;
  text-transform:uppercase; color:rgba(255,255,255,.32);
}
.scroll-hint span{
  width:1px; height:28px; background:linear-gradient(rgba(255,255,255,.5),transparent);
  animation:slide 2.2s var(--ease) infinite;
}
@keyframes slide{ 0%,100%{ transform:scaleY(.35); opacity:.3; } 50%{ transform:scaleY(1); opacity:1; } }

/* =========================================================
   MARQUEE
   ========================================================= */
.marquee{
  overflow:hidden; background:var(--ink);
  border-block:1px solid var(--line-dark);
  padding:.95rem 0;
}
.marquee__track{ display:flex; width:max-content; animation:scroll 42s linear infinite; }
.marquee__track span{
  display:flex; align-items:center; white-space:nowrap; padding-right:0;
  font-family:var(--f-disp); font-weight:700; font-stretch:80%;
  font-size:clamp(.95rem,.85rem + .45vw,1.35rem);
  letter-spacing:.02em; text-transform:uppercase;
  color:rgba(255,255,255,.82);
}
.marquee__track i{
  font-style:normal; color:var(--steel-lt);
  padding:0 clamp(1rem,2.5vw,2rem); font-size:.55em; opacity:.85;
}
@keyframes scroll{ to{ transform:translateX(-50%); } }
.marquee:hover .marquee__track{ animation-play-state:paused; }

/* =========================================================
   SECTIONS
   ========================================================= */
.sec{ position:relative; padding-block:var(--sec-y); isolation:isolate; }
.sec--paper{ background:var(--paper); }
.sec--paper::before{ /* trame calque très légère */
  content:""; position:absolute; inset:0; z-index:-1; pointer-events:none;
  background-image:
    linear-gradient(rgba(9,33,59,.045) 1px,transparent 1px),
    linear-gradient(90deg, rgba(9,33,59,.045) 1px,transparent 1px);
  background-size:26px 26px;
  -webkit-mask-image:radial-gradient(90% 70% at 20% 0%, #000, transparent 70%);
  mask-image:radial-gradient(90% 70% at 20% 0%, #000, transparent 70%);
}
.sec--ink{ background:var(--ink-deep); color:#fff; }
.sec--cta{ background:linear-gradient(165deg, var(--ink) 0%, var(--ink-deep) 70%); color:#fff; }
.sec--ink .sec__grid-bg, .sec--cta .sec__grid-bg{ z-index:-1; }

.sec__head{
  display:grid; gap:clamp(1.2rem,3vw,3rem);
  grid-template-columns:minmax(0,1fr) minmax(0,.85fr);
  align-items:end;
  margin-bottom:clamp(2.6rem,5vw,4rem);
}
.sec__head-p{
  font-weight:300; font-size:1.03rem; line-height:1.75;
  color:rgba(255,255,255,.62); max-width:34rem;
}
.sec--paper .sec__head-p{ color:rgba(9,33,59,.66); }

/* ---------- À PROPOS ---------- */
.about{
  display:grid; gap:clamp(2.2rem,5vw,4.5rem);
  grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);
  align-items:start;
}
.about__lead p{
  margin-top:1.5rem; color:rgba(9,33,59,.72);
  font-weight:300; font-size:1.03rem;
}
.about__lead p strong{ font-weight:500; color:var(--ink); }
.about__media{ position:sticky; top:120px; }

.quote{
  margin-top:2.4rem; padding:1.7rem 0 0 1.7rem;
  border-left:2px solid var(--steel);
  position:relative;
}
.quote p{
  font-family:var(--f-disp); font-weight:500; font-style:italic; font-stretch:96%;
  font-size:clamp(1.1rem,.95rem + .7vw,1.42rem);
  line-height:1.42; letter-spacing:-.015em; color:var(--ink);
  text-wrap:pretty;
}
.quote p::before{ content:"« "; color:var(--steel); }
.quote p::after{ content:" »"; color:var(--steel); }
.quote cite{
  display:block; margin-top:1rem;
  font-family:var(--f-mono); font-style:normal; font-size:.68rem;
  letter-spacing:.16em; text-transform:uppercase; color:var(--silver);
}

.values{
  display:grid; gap:1px;
  grid-template-columns:repeat(3,minmax(0,1fr));
  background:var(--line-light);
  border:1px solid var(--line-light);
  border-radius:2px; overflow:hidden;
}
.values li{
  background:var(--paper);
  padding:clamp(1.5rem,3vw,2.2rem);
  transition:background .4s var(--ease);
}
.values li:hover{ background:var(--white); }
.values__n{
  font-family:var(--f-mono); font-size:.65rem; font-weight:600;
  letter-spacing:.18em; color:var(--steel);
}
.values h4{
  font-family:var(--f-disp); font-weight:700; font-stretch:94%;
  font-size:1.18rem; letter-spacing:-.015em;
  margin:.9rem 0 .6rem;
}
.values p{ font-size:.94rem; font-weight:300; color:rgba(9,33,59,.66); }

/* ---------- PRESTATIONS ---------- */
.serv{
  display:grid; gap:1px;
  grid-template-columns:repeat(3,minmax(0,1fr));
  background:var(--line-dark);
  border:1px solid var(--line-dark);
  border-radius:2px; overflow:hidden;
}
.serv__card{
  position:relative; overflow:hidden;
  display:flex; flex-direction:column;
  background:var(--ink-deep);
  padding:clamp(1.7rem,3vw,2.5rem);
  transition:background .45s var(--ease);
}
.serv__card::before{
  content:""; position:absolute; inset:auto 0 0 0; height:2px;
  background:var(--steel-lt);
  transform:scaleX(0); transform-origin:left;
  transition:transform .55s var(--ease-out);
}
.serv__card:hover{ background:var(--ink-2); }
.serv__card:hover::before{ transform:scaleX(1); }
.serv__n{
  position:absolute; top:clamp(1.4rem,2.4vw,1.9rem); right:clamp(1.4rem,2.4vw,1.9rem);
  font-family:var(--f-disp); font-weight:800; font-stretch:76%;
  font-size:2.7rem; line-height:1; letter-spacing:-.04em;
  color:rgba(255,255,255,.06);
  transition:color .45s var(--ease);
}
.serv__card:hover .serv__n{ color:rgba(108,155,196,.22); }
.serv__ico{
  display:block; width:34px; height:34px; color:var(--steel-lt);
  transition:transform .5s var(--ease-out);
}
.serv__ico svg{ stroke-width:1.3; }
.serv__card:hover .serv__ico{ transform:translateY(-3px); }
.serv__card h3{
  font-family:var(--f-disp); font-weight:700; font-stretch:92%;
  font-size:clamp(1.1rem,1rem + .35vw,1.3rem);
  line-height:1.2; letter-spacing:-.018em;
  margin:1.35rem 0 .75rem;
  max-width:15ch;
}
.serv__card p{
  font-size:.93rem; font-weight:300; line-height:1.7;
  color:rgba(255,255,255,.6);
}
.serv__tags{ display:flex; flex-wrap:wrap; gap:.4rem; margin-top:auto; padding-top:1.6rem; }
.serv__tags li{
  font-family:var(--f-mono); font-size:.6rem; font-weight:500;
  letter-spacing:.11em; text-transform:uppercase;
  color:rgba(255,255,255,.52);
  border:1px solid var(--line-dark);
  padding:.28rem .55rem; border-radius:2px;
  transition:border-color .35s, color .35s;
}
.serv__card:hover .serv__tags li{ border-color:rgba(108,155,196,.4); color:rgba(255,255,255,.75); }

/* ---------- BANDEAU CHANTIER ---------- */
.strip{ position:relative; height:clamp(300px,42vw,460px); overflow:hidden; }
.strip__img{ position:absolute; inset:0; }
.strip__img img{ width:100%; height:100%; object-fit:cover; }
/* scrim supplémentaire : garantit la lisibilité du texte blanc */
.strip::after{
  content:""; position:absolute; inset:0; z-index:2; pointer-events:none;
  background:
    radial-gradient(70% 80% at 50% 55%, rgba(5,19,31,.72) 0%, rgba(5,19,31,.34) 60%, transparent 100%),
    linear-gradient(180deg, rgba(5,19,31,.55) 0%, rgba(5,19,31,.2) 45%, rgba(5,19,31,.62) 100%);
}
.strip__overlay{
  position:relative; z-index:3;
  height:100%;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:1.5rem; text-align:center;
  padding-inline:var(--pad);
  color:#fff;
}
.strip__kicker{
  font-family:var(--f-mono); font-size:.7rem; font-weight:600;
  letter-spacing:.28em; text-transform:uppercase; color:var(--steel-lt);
}
.strip__path{
  display:flex; flex-wrap:wrap; align-items:center; justify-content:center;
  gap:clamp(.5rem,1.6vw,1.3rem);
  font-family:var(--f-disp); font-weight:800; font-stretch:86%;
  font-size:clamp(1.15rem,.7rem + 2.1vw,2.5rem);
  letter-spacing:-.025em; text-transform:uppercase;
}
.strip__path i{ font-style:normal; color:var(--steel-lt); font-size:.62em; }

/* ---------- MÉTHODE ---------- */
.steps{ position:relative; max-width:960px; }
.steps::before{
  content:""; position:absolute;
  left:clamp(22px,3.4vw,31px); top:14px; bottom:14px; width:1px;
  background:linear-gradient(var(--steel),rgba(58,107,150,.14));
}
.steps__it{
  position:relative; display:flex; gap:clamp(1.2rem,3vw,2.4rem);
  padding-block:clamp(1.4rem,3vw,2rem);
}
.steps__it + .steps__it{ border-top:1px solid var(--line-light); }
.steps__num{ flex:none; position:relative; z-index:2; }
.steps__num span{
  display:grid; place-items:center;
  width:clamp(44px,6.6vw,62px); aspect-ratio:1;
  background:var(--paper); border:1px solid var(--steel);
  border-radius:50%;
  font-family:var(--f-mono); font-size:.82rem; font-weight:600;
  color:var(--steel);
  transition:background .4s var(--ease), color .4s var(--ease), transform .4s var(--ease-out);
}
.steps__it:hover .steps__num span{
  background:var(--steel); color:#fff; transform:scale(1.07);
}
.steps__body{ padding-top:.35rem; }
.steps__body h3{
  font-family:var(--f-disp); font-weight:700; font-stretch:94%;
  font-size:clamp(1.12rem,1rem + .6vw,1.5rem);
  letter-spacing:-.02em; line-height:1.22;
}
.steps__body p{
  margin-top:.65rem; max-width:62ch;
  font-size:.97rem; font-weight:300; color:rgba(9,33,59,.66);
}

/* ---------- ENGAGEMENTS ---------- */
.eng{
  display:grid; gap:clamp(2.2rem,5vw,4.5rem);
  grid-template-columns:minmax(0,1fr) minmax(0,.9fr);
  align-items:center;
}
.eng__left > p{
  margin-top:1.4rem; max-width:38rem;
  font-weight:300; color:rgba(255,255,255,.66); font-size:1.03rem;
}
.eng__list{ margin-top:2.4rem; border-top:1px solid var(--line-dark); }
.eng__list li{
  display:flex; flex-wrap:wrap; align-items:baseline; gap:.35rem 1.2rem;
  padding:1.1rem 0 1.1rem .2rem;
  border-bottom:1px solid var(--line-dark);
  position:relative;
  transition:padding-left .4s var(--ease);
}
.eng__list li::before{
  content:""; position:absolute; left:0; top:50%; width:0; height:1px;
  background:var(--steel-lt);
  transform:translateY(-50%);
  transition:width .4s var(--ease-out);
}
.eng__list li:hover{ padding-left:1.5rem; }
.eng__list li:hover::before{ width:1rem; }
.eng__list b{
  font-family:var(--f-disp); font-weight:700; font-stretch:92%;
  font-size:1.1rem; letter-spacing:-.015em; min-width:13rem;
}
.eng__list span{
  font-family:var(--f-mono); font-size:.72rem; letter-spacing:.05em;
  color:rgba(255,255,255,.5);
}

/* ---------- CONTACT ---------- */
.cta{
  display:grid; gap:clamp(2.4rem,5vw,4.5rem);
  grid-template-columns:minmax(0,1fr) minmax(0,.92fr);
  align-items:start;
}
.cta__left > p{
  margin-top:1.4rem; max-width:36rem;
  font-weight:300; color:rgba(255,255,255,.68); font-size:1.03rem;
}
.cta__badge{
  display:inline-flex; align-items:center; gap:.6rem;
  margin-top:1.7rem; padding:.55rem 1rem .55rem .8rem;
  border:1px solid rgba(108,155,196,.45);
  background:rgba(58,107,150,.14);
  border-radius:2px;
  font-family:var(--f-mono); font-size:.7rem; font-weight:600;
  letter-spacing:.13em; text-transform:uppercase; color:#fff;
}
.contact-list{ margin-top:2.6rem; border-top:1px solid var(--line-dark); }
.contact-list li{ border-bottom:1px solid var(--line-dark); padding:1.05rem 0; }
.contact-list__lbl{
  display:block; margin-bottom:.3rem;
  font-family:var(--f-mono); font-size:.62rem; font-weight:500;
  letter-spacing:.2em; text-transform:uppercase; color:rgba(255,255,255,.4);
}
.contact-list a{
  font-family:var(--f-disp); font-weight:600; font-stretch:94%;
  font-size:clamp(1rem,.94rem + .3vw,1.18rem);
  letter-spacing:-.012em; line-height:1.4;
  background-image:linear-gradient(var(--steel-lt),var(--steel-lt));
  background-size:0% 1px; background-position:0 100%; background-repeat:no-repeat;
  transition:background-size .4s var(--ease-out), color .3s;
}
.contact-list a:hover{ background-size:100% 1px; color:var(--steel-lt); }

/* ---------- FORMULAIRE ---------- */
.form{
  background:rgba(255,255,255,.045);
  border:1px solid var(--line-dark);
  border-radius:2px;
  padding:clamp(1.4rem,3.2vw,2.3rem);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.form__title{
  font-family:var(--f-disp); font-weight:700; font-stretch:94%;
  font-size:1.35rem; letter-spacing:-.02em;
  padding-bottom:1.1rem; margin-bottom:1.5rem;
  border-bottom:1px solid var(--line-dark);
}
.field{ margin-bottom:1.05rem; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
.field label{
  display:block; margin-bottom:.45rem;
  font-family:var(--f-mono); font-size:.63rem; font-weight:500;
  letter-spacing:.17em; text-transform:uppercase; color:rgba(255,255,255,.55);
}
.field label i{ color:var(--steel-lt); font-style:normal; }
.field input, .field textarea, .field select{
  width:100%; padding:.85rem 1rem;
  background:rgba(6,20,34,.55);
  border:1px solid var(--line-dark);
  border-radius:2px; color:#fff;
  font-size:.94rem; font-weight:300;
  transition:border-color .3s, background .3s, box-shadow .3s;
}
.field textarea{ resize:vertical; min-height:110px; }
.field input::placeholder, .field textarea::placeholder{ color:rgba(255,255,255,.28); }
.field input:focus, .field textarea:focus, .field select:focus{
  outline:none; border-color:var(--steel-lt);
  background:rgba(6,20,34,.8);
  box-shadow:0 0 0 3px rgba(108,155,196,.16);
}
.field input.err, .field textarea.err{ border-color:#D4746A; box-shadow:0 0 0 3px rgba(212,116,106,.14); }
.select{ position:relative; }
.select select{ appearance:none; -webkit-appearance:none; padding-right:2.6rem; cursor:pointer; }
.select select option{ background:var(--ink-deep); color:#fff; }
.select svg{
  position:absolute; right:1rem; top:50%; transform:translateY(-50%);
  width:16px; height:16px; color:var(--steel-lt); pointer-events:none;
}
.form .btn{ margin-top:.6rem; }
.form__note{
  margin-top:1rem; text-align:center;
  font-family:var(--f-mono); font-size:.63rem; letter-spacing:.07em;
  color:rgba(255,255,255,.35); line-height:1.6;
}
.form__ok{
  margin-top:1rem; padding:.85rem 1rem;
  border:1px solid rgba(108,155,196,.5); background:rgba(58,107,150,.18);
  border-radius:2px;
  font-family:var(--f-mono); font-size:.72rem; line-height:1.6; color:#fff;
}

/* =========================================================
   FOOTER
   ========================================================= */
.ft{ background:var(--ink-deep); color:#fff; border-top:1px solid var(--line-dark); }
.ft__inner{
  display:grid; gap:clamp(2rem,4vw,3rem);
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  padding-block:clamp(3rem,6vw,4.8rem);
}
.ft__logo{ height:44px; width:auto; opacity:.95; }
.ft__brand p{
  margin-top:1.3rem; font-size:.92rem; font-weight:300; line-height:1.72;
  color:rgba(255,255,255,.55); max-width:30ch;
}
.ft__disc{
  font-family:var(--f-mono) !important; font-size:.64rem !important;
  letter-spacing:.16em; text-transform:uppercase; white-space:nowrap;
  color:var(--steel-lt) !important; margin-top:1.1rem !important;
}
.ft__disc i{ font-style:normal; opacity:.5; }
.ft__lbl{
  font-family:var(--f-mono); font-size:.62rem; font-weight:600;
  letter-spacing:.2em; text-transform:uppercase; color:rgba(255,255,255,.38);
  margin-bottom:1.15rem;
}
.ft__nav{ display:flex; flex-direction:column; align-items:flex-start; gap:.7rem; }
.ft__nav a{
  font-size:.91rem; font-weight:300; color:rgba(255,255,255,.68); line-height:1.55;
  transition:color .25s, transform .3s var(--ease-out);
}
.ft__nav a:hover{ color:var(--steel-lt); transform:translateX(3px); }
.ft__bot{
  display:flex; flex-wrap:wrap; gap:.7rem 1.5rem;
  justify-content:space-between; align-items:center;
  padding-block:1.4rem;
  border-top:1px solid var(--line-dark);
}
.ft__bot p{ font-size:.78rem; color:rgba(255,255,255,.4); }
.ft__mono{
  font-family:var(--f-mono); font-size:.64rem !important;
  letter-spacing:.2em; text-transform:uppercase; color:rgba(255,255,255,.3) !important;
}

/* ---------- FAB ---------- */
.fab{
  position:fixed; right:clamp(1rem,3vw,2rem); bottom:clamp(1rem,3vw,2rem);
  z-index:90;
  display:grid; place-items:center;
  width:46px; height:46px;
  background:var(--steel); color:#fff;
  border:1px solid rgba(255,255,255,.18); border-radius:2px;
  box-shadow:0 12px 26px -12px rgba(0,0,0,.6);
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:opacity .35s, visibility .35s, transform .35s var(--ease-out), background .3s;
}
.fab.on{ opacity:1; visibility:visible; transform:translateY(0); }
.fab:hover{ background:var(--ink); }
.fab svg{ width:18px; height:18px; }

/* =========================================================
   REVEAL
   ========================================================= */
.reveal{
  opacity:0; transform:translateY(22px);
  transition:opacity .8s var(--ease-out) var(--d,0s), transform .8s var(--ease-out) var(--d,0s);
  will-change:opacity, transform;
}
.reveal.in{ opacity:1; transform:none; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:1080px){
  .nav{ gap:0; }
  .nav a{ padding:.5rem .65rem; font-size:.8rem; }
  .tel span{ display:none; }
  .hero__wrap{ grid-template-columns:1fr; }
  .hero__media{ max-width:640px; }
  .cartouche{ position:static; width:100%; margin-top:1.6rem; }
  .about{ grid-template-columns:1fr; }
  .about__media{ position:static; max-width:460px; }
  .eng, .cta{ grid-template-columns:1fr; }
  .serv{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .ft__inner{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}

@media (max-width:860px){
  .burger{ display:flex; }
  .nav{
    position:fixed; inset:0 0 auto 0;
    flex-direction:column; gap:0;
    padding:calc(clamp(64px,7vw,86px) + 1rem) var(--pad) 2rem;
    background:var(--ink-deep);
    border-bottom:1px solid var(--line-dark);
    box-shadow:0 24px 48px -20px rgba(0,0,0,.7);
    transform:translateY(-102%);
    transition:transform .5s var(--ease-out);
    margin-left:0;
  }
  .nav.open{ transform:translateY(0); }
  .nav a{
    padding:1rem .2rem; font-size:1.1rem; font-family:var(--f-disp);
    font-weight:600; font-stretch:94%;
    border-bottom:1px solid var(--line-dark);
    border-radius:0;
  }
  .nav a:hover, .nav a.is-active{ background:transparent; }
  /* le menu déroulant sort du flux : on repousse téléphone + burger à droite */
  .hdr__act{ margin-left:auto; }
  .hdr__act .btn--sm{ display:none; }
  .sec__head{ grid-template-columns:1fr; align-items:start; }
  .values{ grid-template-columns:1fr; }
  .hero__stats{ grid-template-columns:1fr; gap:1.25rem; }
  .hero__stats div{ display:flex; align-items:baseline; gap:1rem; }
  .hero__stats dd{ margin-top:0; }
  .eng__list b{ min-width:0; width:100%; }
}

@media (max-width:640px){
  .serv{ grid-template-columns:1fr; }
  .field-row{ grid-template-columns:1fr; gap:0; }
  .ft__inner{ grid-template-columns:1fr; }
  .scroll-hint{ display:none; }
  .btn{ width:100%; }
  .hero__cta{ flex-direction:column; }
  .strip__path{ gap:.4rem .7rem; }
  .quote{ padding-left:1.2rem; }
}

/* ---------- PRÉFÉRENCES ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important; animation-iteration-count:1 !important;
    transition-duration:.01ms !important; scroll-behavior:auto !important;
  }
  .reveal{ opacity:1; transform:none; }
}

@media print{
  .hdr,.fab,.marquee,.scroll-hint,.form{ display:none !important; }
  body{ background:#fff; color:#000; }
  .sec--ink,.sec--cta,.hero,.ft{ background:#fff !important; color:#000 !important; }
}