:root{
  --ink:#0B1726;          /* bleu nuit profond */
  --ink-2:#142235;        /* bleu nuit secondaire */
  --paper:#F5F1EA;        /* blanc cassé */
  --paper-2:#EDE7DC;      /* variante */
  --anthracite:#2C3338;
  --rule:#2A3A55;
  --muted:#8794A8;
  --copper:#B07A4A;       /* cuivre discret */
  --copper-2:#C99466;
  --serif:"Cormorant Garamond", Georgia, serif;
  --sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{
  font-family:var(--sans);
  font-weight:400;
  color:var(--ink);
  background:var(--paper);
  line-height:1.65;
  font-size:16px;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1240px;margin:0 auto;padding:0 32px}

/* === HEADER === */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:18px 0;
  transition:all .35s ease;
  background:transparent;
}
.site-header.scrolled{
  background:rgba(11,23,38,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav{display:flex;align-items:center;justify-content:space-between}
.logo{
  display:inline-flex;
  align-items:center;
  gap:14px;
  line-height:1;
}
.logo-mark{
  width:44px;
  height:44px;
  flex-shrink:0;
  transition:transform .4s ease;
  display:block;
}
.logo:hover .logo-mark{transform:rotate(-4deg)}
.logo-wordmark{
  font-family:var(--serif);
  font-size:22px;
  font-weight:600;
  color:#fff;
  letter-spacing:.5px;
  display:inline-flex;
  align-items:baseline;
}
.logo-wordmark .dot{color:var(--copper-2);margin:0 4px}
.logo-tag{
  font-family:var(--sans);
  font-size:9px;
  letter-spacing:2.5px;
  text-transform:uppercase;
  color:var(--copper-2);
  display:block;
  margin-top:5px;
  font-weight:600;
}
.nav-links{display:flex;gap:36px;align-items:center}
.nav-links a{
  font-size:13px;
  font-weight:500;
  color:rgba(255,255,255,.78);
  letter-spacing:1.5px;
  text-transform:uppercase;
  transition:color .25s;
  position:relative;
}
.nav-links a:hover{color:#fff}
.nav-cta{
  border:1px solid rgba(255,255,255,.22);
  padding:10px 22px;
  border-radius:1px;
  transition:all .25s;
}
.nav-cta:hover{background:#fff;color:var(--ink) !important;border-color:#fff}
.burger{display:none;background:none;border:0;color:#fff;font-size:24px;cursor:pointer}

/* === HERO === */
.hero{
  position:relative;
  min-height:100vh;
  background:var(--ink);
  color:#fff;
  display:flex;
  align-items:center;
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:
    repeating-linear-gradient(0deg, transparent 0, transparent 79px, rgba(201,148,102,0.05) 79px, rgba(201,148,102,0.05) 80px),
    repeating-linear-gradient(90deg, transparent 0, transparent 79px, rgba(201,148,102,0.05) 79px, rgba(201,148,102,0.05) 80px),
    radial-gradient(ellipse at 75% 25%, rgba(176,122,74,0.10) 0%, transparent 55%),
    radial-gradient(ellipse at 20% 80%, rgba(20,34,53,0.6) 0%, transparent 60%);
}
.hero-sectors{
  position:absolute;
  left:0;right:0;bottom:0;
  z-index:3;
  padding:24px 0;
  border-top:1px solid rgba(255,255,255,.08);
  background:rgba(8,15,27,.55);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  opacity:0;
  animation:fadeUp .9s 1.1s forwards;
}
.hero-sectors-inner{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:28px;
  flex-wrap:wrap;
  font-size:11px;
  letter-spacing:3.5px;
  text-transform:uppercase;
  font-weight:500;
  color:rgba(255,255,255,.7);
}
.hero-sectors-label{
  color:var(--copper-2);
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:14px;
}
.hero-sectors-label::after{content:"";width:24px;height:1px;background:var(--copper-2)}
.hero-sectors-list{display:inline-flex;flex-wrap:wrap;gap:26px;align-items:center}
.hero-sectors-list span{position:relative;color:rgba(255,255,255,.85)}
.hero-sectors-list span:not(:last-child)::after{
  content:"";
  position:absolute;
  right:-15px;top:50%;
  width:3px;height:3px;
  background:var(--copper-2);
  border-radius:50%;
  transform:translateY(-50%);
}
@media (max-width:700px){
  .hero-sectors{padding:18px 0}
  .hero-sectors-inner{gap:14px;font-size:10px;letter-spacing:2.5px}
  .hero-sectors-list{gap:18px}
  .hero-sectors-list span:not(:last-child)::after{right:-11px}
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,var(--ink) 0%,rgba(11,23,38,.92) 55%,rgba(11,23,38,.78) 100%);
  z-index:1;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at 80% 20%,rgba(176,122,74,.12) 0%,transparent 55%);
  z-index:1;
}
.hero-inner{position:relative;z-index:2;width:100%;padding:140px 0 80px}
.hero-eyebrow{
  font-size:12px;
  letter-spacing:4px;
  text-transform:uppercase;
  color:var(--copper-2);
  font-weight:500;
  margin-bottom:32px;
  display:inline-flex;
  align-items:center;
  gap:14px;
  opacity:0;
  animation:fadeUp .9s .2s forwards;
}
.hero-eyebrow::before{
  content:"";width:36px;height:1px;background:var(--copper-2);
}
.hero h1{
  font-family:var(--serif);
  font-size:clamp(42px,6vw,84px);
  line-height:1.05;
  font-weight:500;
  letter-spacing:-1px;
  margin-bottom:36px;
  max-width:980px;
  opacity:0;
  animation:fadeUp .9s .35s forwards;
}
.hero h1 em{font-style:italic;color:var(--copper-2);font-weight:500}
.hero-lead{
  font-size:18px;
  line-height:1.7;
  max-width:640px;
  color:rgba(255,255,255,.82);
  margin-bottom:48px;
  font-weight:300;
  opacity:0;
  animation:fadeUp .9s .5s forwards;
}
.hero-cta-row{
  display:flex;
  gap:20px;
  align-items:center;
  flex-wrap:wrap;
  opacity:0;
  animation:fadeUp .9s .65s forwards;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:12px;
  padding:18px 36px;
  font-size:13px;
  font-weight:500;
  letter-spacing:2px;
  text-transform:uppercase;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .3s ease;
  border-radius:1px;
}
.btn-primary{background:var(--copper);color:#fff;border-color:var(--copper)}
.btn-primary:hover{background:var(--copper-2);border-color:var(--copper-2);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.06)}
.btn .arrow{transition:transform .3s}
.btn:hover .arrow{transform:translateX(4px)}

.hero-scroll{
  position:absolute;
  bottom:110px;left:50%;
  transform:translateX(-50%);
  z-index:2;
  font-size:11px;
  letter-spacing:3px;
  text-transform:uppercase;
  color:rgba(255,255,255,.5);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  opacity:0;
  animation:fadeUp .9s 1s forwards;
}
.scroll-line{width:1px;height:48px;background:rgba(255,255,255,.3);position:relative;overflow:hidden}
.scroll-line::after{
  content:"";position:absolute;top:-48px;left:0;width:1px;height:48px;background:var(--copper-2);
  animation:scrollLine 2.4s infinite ease-in-out;
}
@keyframes scrollLine{0%{top:-48px}100%{top:48px}}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* === SECTION COMMON === */
section{padding:120px 0;position:relative}
.section-eyebrow{
  font-size:11px;
  letter-spacing:4px;
  text-transform:uppercase;
  color:var(--copper);
  font-weight:600;
  margin-bottom:18px;
  display:inline-flex;
  align-items:center;
  gap:14px;
}
.section-eyebrow::before{content:"";width:32px;height:1px;background:var(--copper)}
.section-title{
  font-family:var(--serif);
  font-size:clamp(34px,4.4vw,56px);
  line-height:1.1;
  font-weight:500;
  letter-spacing:-.5px;
  margin-bottom:28px;
  max-width:720px;
}
.section-title em{font-style:italic;color:var(--copper)}
.section-lead{
  font-size:17px;
  line-height:1.75;
  max-width:680px;
  color:#3A4A5F;
  font-weight:300;
}

/* reveal-on-scroll */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .9s ease,transform .9s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* === INTRO / LE CABINET === */
.intro{background:var(--paper)}
.intro-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:96px;
  align-items:center;
}
.intro-image{
  position:relative;
  aspect-ratio:4/5;
  background-image:url('../img/intro.jpg');
  background-size:cover;
  background-position:center;
}
.intro-image::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,23,38,0) 60%,rgba(11,23,38,.5) 100%);
}
.intro-image-frame{
  position:absolute;
  top:24px;left:24px;right:-24px;bottom:-24px;
  border:1px solid var(--copper);
  z-index:-1;
}
.intro-image-wrap{position:relative}
.intro-text p{
  font-size:17px;
  line-height:1.8;
  margin-bottom:24px;
  color:#3A4A5F;
  font-weight:300;
}
.intro-text p strong{color:var(--ink);font-weight:600}
.intro-signature{
  margin-top:40px;
  padding-top:32px;
  border-top:1px solid rgba(0,0,0,.08);
  font-size:14px;
  letter-spacing:1px;
  color:var(--muted);
  text-transform:uppercase;
}

/* === EXPERTISE === */
.expertise{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.expertise::before{
  content:"";position:absolute;
  top:-200px;right:-200px;width:600px;height:600px;
  background:radial-gradient(circle,rgba(176,122,74,.08) 0%,transparent 60%);
  pointer-events:none;
}
.expertise .section-lead{color:rgba(255,255,255,.7)}
.expertise-header{margin-bottom:80px;max-width:760px}
.expertise-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:rgba(255,255,255,.08);
}
.exp-card{
  background:var(--ink);
  padding:56px 48px;
  position:relative;
  transition:background .4s;
  cursor:default;
}
.exp-card:hover{background:var(--ink-2)}
.exp-card:hover .exp-arrow{color:var(--copper-2);transform:translateX(6px)}
.exp-num{
  font-family:var(--serif);
  font-size:18px;
  color:var(--copper-2);
  font-weight:500;
  letter-spacing:2px;
  margin-bottom:24px;
  display:block;
}
.exp-title{
  font-family:var(--serif);
  font-size:30px;
  font-weight:500;
  line-height:1.2;
  margin-bottom:18px;
  letter-spacing:-.3px;
}
.exp-desc{
  font-size:15px;
  line-height:1.75;
  color:rgba(255,255,255,.72);
  margin-bottom:28px;
  font-weight:300;
}
.exp-list{
  list-style:none;
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:24px;
}
.exp-list li{
  font-size:13px;
  letter-spacing:.4px;
  color:rgba(255,255,255,.6);
  padding:7px 0 7px 22px;
  position:relative;
  font-weight:400;
}
.exp-list li::before{
  content:"";position:absolute;left:0;top:14px;
  width:10px;height:1px;background:var(--copper-2);
}
.exp-arrow{
  position:absolute;
  bottom:48px;right:48px;
  font-size:24px;
  color:rgba(255,255,255,.4);
  transition:all .3s;
}

/* === SECTEURS === */
.secteurs{background:var(--paper-2)}
.secteurs-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:64px;
}
.sect-card{
  background:#fff;
  padding:36px 28px;
  text-align:left;
  border:1px solid rgba(0,0,0,.05);
  transition:all .3s;
  position:relative;
  overflow:hidden;
}
.sect-card::after{
  content:"";position:absolute;
  bottom:0;left:0;width:100%;height:2px;
  background:var(--copper);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .4s ease;
}
.sect-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px -20px rgba(11,23,38,.15)}
.sect-card:hover::after{transform:scaleX(1)}
.sect-icon{
  width:44px;height:44px;
  margin-bottom:20px;
  color:var(--copper);
}
.sect-icon svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.2}
.sect-title{
  font-family:var(--serif);
  font-size:22px;
  font-weight:600;
  margin-bottom:10px;
  color:var(--ink);
}
.sect-list{
  list-style:none;
  font-size:13px;
  color:var(--muted);
  line-height:1.8;
}

/* === APPROCHE === */
.approche{background:var(--paper);position:relative}
.approche-header{display:grid;grid-template-columns:1fr 1fr;gap:80px;margin-bottom:80px;align-items:end}
.approche-steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid rgba(0,0,0,.1);
}
.step{
  padding:40px 32px 40px 0;
  border-right:1px solid rgba(0,0,0,.1);
  position:relative;
}
.step:last-child{border-right:0;padding-right:0}
.step:not(:first-child){padding-left:32px}
.step-num{
  font-family:var(--serif);
  font-size:14px;
  letter-spacing:3px;
  color:var(--copper);
  font-weight:600;
  margin-bottom:18px;
  display:block;
}
.step-title{
  font-family:var(--serif);
  font-size:26px;
  font-weight:600;
  margin-bottom:14px;
  color:var(--ink);
  line-height:1.2;
}
.step-desc{font-size:14px;line-height:1.7;color:#3A4A5F;font-weight:300}

/* === CHIFFRES === */
.chiffres{
  background:var(--ink);
  color:#fff;
  padding:100px 0;
  position:relative;
  overflow:hidden;
}
.chiffres-bg{
  position:absolute;inset:0;
  background-image:url('../img/chiffres.jpg');
  background-size:cover;background-position:center;
  opacity:.08;
}
.chiffres-inner{position:relative;z-index:1}
.chiffres-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:48px;
  text-align:left;
}
.chiffre{position:relative;padding-left:24px}
.chiffre::before{content:"";position:absolute;left:0;top:0;bottom:0;width:1px;background:var(--copper-2)}
.chiffre-num{
  font-family:var(--serif);
  font-size:72px;
  font-weight:500;
  line-height:1;
  letter-spacing:-2px;
  color:#fff;
}
.chiffre-num .suffix{color:var(--copper-2);font-size:48px}
.chiffre-label{
  font-size:13px;
  letter-spacing:2px;
  text-transform:uppercase;
  color:rgba(255,255,255,.6);
  margin-top:16px;
  font-weight:500;
}

/* === À PROPOS === */
.about{background:var(--paper)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:96px;align-items:start}
.about-image{
  position:relative;
  aspect-ratio:5/6;
  background-image:url('../img/about.jpg');
  background-size:cover;background-position:center;
  filter:grayscale(20%);
}
.about-image-wrap{position:relative}
.about-image-frame{
  position:absolute;top:-24px;left:-24px;right:24px;bottom:24px;
  border:1px solid var(--copper);z-index:0;
}
.about-image{position:relative;z-index:1}
.about-text p{
  font-size:17px;line-height:1.8;
  margin-bottom:22px;
  color:#3A4A5F;font-weight:300;
}
.creds{
  margin-top:48px;
  padding:32px 0 0;
  border-top:1px solid rgba(0,0,0,.08);
}
.creds-title{
  font-size:11px;
  letter-spacing:3px;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:24px;
  font-weight:600;
}
.creds-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px 32px;
  list-style:none;
}
.creds-list li{
  font-size:14px;
  color:var(--ink);
  padding-left:20px;
  position:relative;
  font-weight:400;
}
.creds-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:8px;height:1px;background:var(--copper);
}
.creds-list li strong{display:block;font-weight:600;margin-bottom:2px}
.creds-list li span{font-size:12px;color:var(--muted)}

/* === CONTACT === */
.contact{
  background:var(--ink);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.contact::before{
  content:"";position:absolute;
  top:-100px;left:-100px;width:500px;height:500px;
  background:radial-gradient(circle,rgba(176,122,74,.08) 0%,transparent 60%);
}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:96px}
.contact-left .section-lead{color:rgba(255,255,255,.7);margin-bottom:48px}
.contact-info{
  list-style:none;
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:32px;
}
.contact-info li{
  display:flex;
  align-items:flex-start;
  gap:20px;
  padding:18px 0;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.contact-info li:last-child{border-bottom:0}
.contact-icon{
  width:36px;height:36px;
  border:1px solid var(--copper-2);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--copper-2);
  flex-shrink:0;
}
.contact-icon svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5}
.contact-info .label{
  font-size:11px;letter-spacing:2px;text-transform:uppercase;
  color:rgba(255,255,255,.5);margin-bottom:4px;
}
.contact-info .value{font-size:15px;color:#fff;font-weight:400}
.contact-info a:hover{color:var(--copper-2)}

.contact-form{
  background:rgba(255,255,255,.03);
  padding:48px;
  border:1px solid rgba(255,255,255,.08);
}
.form-group{margin-bottom:22px}
.form-group label{
  display:block;
  font-size:11px;
  letter-spacing:2px;
  text-transform:uppercase;
  color:rgba(255,255,255,.6);
  margin-bottom:10px;
  font-weight:500;
}
.form-group input,
.form-group select,
.form-group textarea{
  width:100%;
  background:transparent;
  border:0;
  border-bottom:1px solid rgba(255,255,255,.18);
  padding:12px 0;
  color:#fff;
  font-family:var(--sans);
  font-size:15px;
  transition:border-color .3s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
  outline:none;border-color:var(--copper-2);
}
.form-group textarea{resize:vertical;min-height:100px}
.form-group select{appearance:none;background-image:url("data:image/svg+xml;charset=US-ASCII,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23B07A4A' d='M6 8L0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}
.form-consent{
  display:flex;gap:12px;align-items:flex-start;
  font-size:12px;color:rgba(255,255,255,.55);
  line-height:1.6;margin:24px 0;
}
.form-consent input{margin-top:3px;accent-color:var(--copper)}
.contact-form .btn{width:100%;justify-content:center;margin-top:8px}

/* === FOOTER === */
.footer{
  background:#080F1B;
  color:rgba(255,255,255,.55);
  padding:60px 0 32px;
  font-size:13px;
}
.footer-top{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:48px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.08);
  margin-bottom:32px;
}
.footer-logo{
  display:inline-flex;
  align-items:center;
  gap:14px;
  font-family:var(--serif);
  font-size:22px;font-weight:600;color:#fff;
  margin-bottom:14px;
}
.footer-logo img{width:48px;height:48px;flex-shrink:0;display:block}
.footer-est{
  font-family:var(--sans);
  font-size:10px;
  letter-spacing:3px;
  text-transform:uppercase;
  color:var(--copper-2);
  margin-top:4px;
  margin-bottom:18px;
  font-weight:600;
  display:block;
  margin-left:62px;
}
@media (max-width:600px){
  .footer-est{margin-left:0}
}
.footer-tag{font-size:13px;line-height:1.7;color:rgba(255,255,255,.55);max-width:340px}
.footer-col h4{
  font-size:11px;letter-spacing:3px;text-transform:uppercase;
  color:#fff;margin-bottom:18px;font-weight:600;
}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px;font-size:13px}
.footer-col a:hover{color:var(--copper-2)}
.footer-bottom{
  display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:16px;
  font-size:12px;color:rgba(255,255,255,.4);
}
.footer-legal{display:flex;gap:24px;flex-wrap:wrap}

/* === RESPONSIVE === */
@media (max-width:900px){
  .nav-links{display:none}
  .burger{display:block}
  .nav-links.open{
    display:flex;flex-direction:column;
    position:absolute;top:100%;left:0;right:0;
    background:var(--ink);padding:24px 32px;
    gap:18px;border-top:1px solid rgba(255,255,255,.08);
  }
  .nav-links.open a{padding:8px 0}
  .intro-grid,.about-grid,.contact-grid,.approche-header{
    grid-template-columns:1fr;gap:48px;
  }
  .expertise-grid,.secteurs-grid,.approche-steps,.chiffres-grid{
    grid-template-columns:1fr 1fr;
  }
  .step{border-right:0;border-bottom:1px solid rgba(0,0,0,.1);padding:32px 0 !important}
  .step:nth-child(odd){padding-right:24px}
  .step:nth-child(even){padding-left:24px}
  section{padding:80px 0}
  .footer-top{grid-template-columns:1fr}
  .chiffre-num{font-size:56px}
  .chiffre-num .suffix{font-size:36px}
}
@media (max-width:600px){
  .container{padding:0 24px}
  .expertise-grid,.secteurs-grid,.approche-steps,.chiffres-grid{
    grid-template-columns:1fr;
  }
  .exp-card{padding:40px 28px}
  .contact-form{padding:32px 24px}
  .hero-cta-row{flex-direction:column;align-items:stretch}
  .btn{justify-content:center}
}

.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary span{transform:rotate(45deg)}
.faq-item:hover{border-color:var(--copper) !important}
.faq-item[open]{border-color:var(--copper) !important;box-shadow:0 12px 24px -16px rgba(11,23,38,.12)}