:root{
    --bg:#0a0908;
    --bg-alt:#111009;
    --bg-card:#141310;
    --gold:#d9c49c;
    --gold-bright:#f2e4c4;
    --gold-dim:#8c7f61;
    --line:#332c20;
    --line-soft:#241f16;
    --text:#e8e2d4;
    --text-muted:#9a9384;
    --ease:cubic-bezier(.16,.8,.24,1);
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--bg);
    color:var(--text);
    font-family:'Inter',sans-serif;
    font-weight:300;
    overflow-x:hidden;
    position:relative;
  }
  body::before{
    content:"";
    position:fixed;inset:0;
    background:
      radial-gradient(ellipse at 20% 0%, rgba(217,196,156,.05), transparent 55%),
      radial-gradient(ellipse at 85% 90%, rgba(217,196,156,.04), transparent 55%);
    pointer-events:none;
    z-index:0;
  }
  .wrap{max-width:1180px;margin:0 auto;padding:0 32px;position:relative;z-index:1;}
  h1,h2,h3,.mono{font-family:'Space Grotesk',sans-serif;}
  a{color:inherit;text-decoration:none;}
  .eyebrow{
    font-size:12px;letter-spacing:.32em;text-transform:uppercase;
    color:var(--gold-dim);font-family:'Space Grotesk',sans-serif;font-weight:500;
  }

  /* ---------- frame lines (border like the flyer) ---------- */
  .frame{
    position:fixed;top:86px;left:14px;right:14px;bottom:14px;border:1px solid var(--line-soft);
    pointer-events:none;z-index:5;
  }
  .frame::before,.frame::after{
    content:"";position:absolute;width:14px;height:14px;
  }

  /* ---------- nav ---------- */
  header{
    position:fixed;top:0;left:0;right:0;width:100%;z-index:100;
    display:flex;align-items:center;justify-content:space-between;
    padding:20px 44px;
    backdrop-filter:blur(14px);
    background:rgba(10,9,8,.1);
    border-bottom:1px solid var(--line-soft);
    transition:padding .4s var(--ease), background .4s var(--ease);
  }
  .brand{display:flex;align-items:center;gap:13px;font-size:15px;letter-spacing:.28em;font-weight:600;color:var(--gold-bright);}
  .brand img{height:32px;width:auto;display:block;}
  nav ul{display:flex;gap:38px;list-style:none;}
  nav a{
    font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--text-muted);
    position:relative;padding-bottom:4px;transition:color .3s;
  }
  nav a::after{
    content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--gold);
    transition:width .35s var(--ease);
  }
  nav a:hover{color:var(--gold-bright);}
  nav a:hover::after{width:100%;}
  .nav-cta{
    border:1px solid var(--gold-dim);padding:10px 22px;font-size:11px;letter-spacing:.18em;
    text-transform:uppercase;color:var(--gold-bright);transition:all .35s var(--ease);white-space:nowrap;
  }
  .nav-cta:hover{background:var(--gold);color:var(--bg);border-color:var(--gold);}
  .nav-links{display:flex;align-items:center;gap:38px;}
  .burger{display:none;}

  /* ---------- hero ---------- */
  .hero{
    min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
    text-align:center;position:relative;padding:170px 32px 80px;
  }
  .circuit{position:absolute;pointer-events:none;opacity:.55;z-index:0;}
  .circuit.tl{top:0;left:0;}
  .circuit.br{bottom:0;right:0;transform:rotate(180deg);}
  .circuit path{fill:none;stroke:var(--gold-dim);stroke-width:1;}
  .circuit circle{fill:var(--bg);stroke:var(--gold-dim);stroke-width:1;}
  .circuit .dot{fill:var(--gold);stroke:none;}

  .logo-mark{width:180px;height:auto;margin-bottom:8px;opacity:0;transform:scale(.92);}

  .hero h1{
    font-size:clamp(52px,9vw,108px);font-weight:600;letter-spacing:.14em;
    color:var(--gold-bright);line-height:1;opacity:0;
  }
  .hero .tagline{
    margin-top:18px;font-size:12px;letter-spacing:.4em;text-transform:uppercase;
    color:var(--gold-dim);display:flex;align-items:center;gap:16px;opacity:0;
  }
  .hero .tagline::before,.hero .tagline::after{content:"";width:34px;height:1px;background:var(--line);}
  .hero p.lead{
    max-width:520px;margin:34px auto 0;font-size:16px;line-height:1.8;color:var(--text-muted);
    font-weight:300;opacity:0;
  }
  .hero-cta{display:flex;gap:18px;margin-top:44px;opacity:0;}
  .btn-primary{
    background:var(--gold);color:var(--bg);padding:15px 34px;font-size:12px;letter-spacing:.2em;
    text-transform:uppercase;font-weight:500;transition:all .35s var(--ease);border:1px solid var(--gold);
  }
  .btn-primary:hover{background:transparent;color:var(--gold-bright);}
  .btn-ghost{
    border:1px solid var(--line);color:var(--text-muted);padding:15px 34px;font-size:12px;letter-spacing:.2em;
    text-transform:uppercase;transition:all .35s var(--ease);
  }
  .btn-ghost:hover{border-color:var(--gold-dim);color:var(--gold-bright);}

  .scroll-cue{position:absolute;bottom:36px;left:50%;transform:translateX(-50%);opacity:0;}
  .scroll-cue span{
    display:block;width:1px;height:44px;background:linear-gradient(var(--gold-dim),transparent);
    animation:scrollpulse 2.4s ease-in-out infinite;
  }
  @keyframes scrollpulse{0%,100%{opacity:.2;}50%{opacity:1;}}

  /* fade-in-up utility triggered by JS */
  .reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease), transform .9s var(--ease);}
  .reveal.in{opacity:1;transform:translateY(0);}

  section{position:relative;padding:150px 0;z-index:1;}
  .section-head{text-align:center;max-width:600px;margin:0 auto 80px;}
  .section-head h2{
    font-size:clamp(30px,4vw,44px);font-weight:500;letter-spacing:.02em;color:var(--gold-bright);
    margin-top:16px;line-height:1.25;
  }
  .section-head p{margin-top:20px;color:var(--text-muted);line-height:1.8;font-size:15px;}
  .divider{width:44px;height:1px;background:var(--line);margin:0 auto;}

  /* ---------- services ---------- */
  .services{
    display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line-soft);
    border-left:1px solid var(--line-soft);
  }
  .service{
    border-right:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
    padding:48px 26px;text-align:center;transition:background .4s var(--ease);
  }
  .service:hover{background:var(--bg-alt);}
  .service svg{width:38px;height:38px;margin:0 auto 22px;display:block;}
  .service svg *{fill:none;stroke:var(--gold);stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round;
    stroke-dasharray:120;stroke-dashoffset:120;transition:stroke-dashoffset 1.1s var(--ease);}
  .service.in svg *{stroke-dashoffset:0;}
  .service h3{
    font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-bright);
    font-weight:500;margin-bottom:12px;
  }
  .service p{font-size:13px;color:var(--text-muted);line-height:1.7;}

  /* ---------- expertise réseau (signature) ---------- */
  .expertise{background:var(--bg-alt);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
  .expertise-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:80px;align-items:center;}
  .expertise-text .eyebrow{margin-bottom:18px;display:block;}
  .expertise-text h2{font-size:clamp(28px,3.4vw,40px);color:var(--gold-bright);font-weight:500;line-height:1.3;margin-bottom:24px;}
  .expertise-text p{color:var(--text-muted);line-height:1.85;font-size:15px;margin-bottom:34px;}
  .expertise-list{list-style:none;display:flex;flex-direction:column;gap:18px;}
  .expertise-list li{
    display:flex;align-items:center;gap:16px;font-size:13px;letter-spacing:.06em;color:var(--text);
    padding-bottom:18px;border-bottom:1px solid var(--line-soft);
  }
  .expertise-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);flex:none;}
  .network-canvas-wrap{
    position:relative;aspect-ratio:1/1;border:1px solid var(--line);background:var(--bg);
  }
  .network-canvas-wrap canvas{width:100%;height:100%;display:block;}
  .network-canvas-wrap::after{
    content:"";position:absolute;top:-1px;left:-1px;width:14px;height:14px;
    border-top:1px solid var(--gold);border-left:1px solid var(--gold);
  }
  .network-canvas-wrap::before{
    content:"";position:absolute;bottom:-1px;right:-1px;width:14px;height:14px;
    border-bottom:1px solid var(--gold);border-right:1px solid var(--gold);z-index:2;
  }

  /* ---------- approche ---------- */
  .approach{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-soft);border:1px solid var(--line-soft);}
  .step{background:var(--bg);padding:56px 40px;}
  .step .num{
    font-family:'Space Grotesk',sans-serif;font-size:13px;color:var(--gold-dim);letter-spacing:.1em;
    margin-bottom:26px;display:block;
  }
  .step h3{font-size:19px;color:var(--gold-bright);font-weight:500;margin-bottom:14px;}
  .step p{font-size:14px;color:var(--text-muted);line-height:1.8;}

  /* ---------- banner ---------- */
  .banner-wrap{display:flex;justify-content:center;padding:0 32px;}
  .banner{
    border:1px solid var(--line);padding:30px 60px;text-align:center;position:relative;
    clip-path:polygon(0 0,calc(100% - 26px) 0,100% 26px,100% 100%,26px 100%,0 calc(100% - 26px));
  }
  .banner p{
    font-size:13px;letter-spacing:.3em;text-transform:uppercase;color:var(--gold-bright);font-weight:500;
    font-family:'Space Grotesk',sans-serif;
  }
  .banner .divider{margin-top:16px;}

  /* ---------- contact ---------- */
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:90px;}
  .contact-info h2{font-size:clamp(28px,3.4vw,40px);color:var(--gold-bright);font-weight:500;margin-bottom:22px;line-height:1.3;}
  .contact-info p{color:var(--text-muted);line-height:1.85;font-size:15px;margin-bottom:40px;max-width:420px;}
  .info-row{display:flex;align-items:center;gap:16px;padding:20px 0;border-top:1px solid var(--line-soft);}
  .info-row:last-of-type{border-bottom:1px solid var(--line-soft);}
  .info-row svg{width:18px;height:18px;flex:none;}
  .info-row svg *{fill:none;stroke:var(--gold);stroke-width:1.4;}
  .info-row .label{font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--gold-dim);margin-bottom:4px;}
  .info-row .value{font-size:14px;color:var(--text);}
  .socials{display:flex;gap:16px;margin-top:32px;}
  .socials a{
    width:38px;height:38px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
    transition:all .3s var(--ease);
  }
  .socials a:hover{border-color:var(--gold);background:var(--bg-alt);}
  .socials svg{width:15px;height:15px;}
  .socials svg *{fill:none;stroke:var(--gold);stroke-width:1.4;}

  form{display:flex;flex-direction:column;gap:26px;}
  .field{position:relative;}
  .field label{
    font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--gold-dim);
    display:block;margin-bottom:10px;
  }
  .field input,.field textarea{
    width:100%;background:transparent;border:none;border-bottom:1px solid var(--line);
    color:var(--text);font-family:'Inter',sans-serif;font-size:15px;font-weight:300;padding:10px 0;
    transition:border-color .35s var(--ease);
  }
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--gold);}
  .field textarea{resize:vertical;min-height:90px;}
  .submit-row{margin-top:12px;}

  footer{
    border-top:1px solid var(--line-soft);padding:40px 0;text-align:center;
  }
  footer p{font-size:11px;letter-spacing:.14em;color:var(--gold-dim);text-transform:uppercase;}

  @media(max-width:980px){
    nav ul{display:none;}
    .services{grid-template-columns:repeat(2,1fr);}
    .expertise-grid,.contact-grid{grid-template-columns:1fr;gap:56px;}
    .approach{grid-template-columns:1fr;}
    header{padding:18px 24px;}
  }
  @media(prefers-reduced-motion: reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  }