:root{
    --ink:#0F2A4A;
    --paper:#F3F7FC;
    --panel:#FFFFFF;
    --signal:#2F6FED;
    --signal-dark:#1E54C4;
    --steel:#56697E;
    --hairline:#D5E1F0;
    --ice:#E7F0FC;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:0.01ms !important; transition-duration:0.01ms !important;}
  }
  body{
    background:
      radial-gradient(circle at 1px 1px, rgba(15,42,74,0.06) 1px, transparent 0) 0 0/28px 28px,
      var(--paper);
    color:var(--ink);
    font-family:'Inter',sans-serif;
    line-height:1.55;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit; text-decoration:none;}
  img,svg{display:block; max-width:100%;}
  .wrap{max-width:1160px; margin:0 auto; padding:0 24px;}
  .mono{font-family:'IBM Plex Mono',monospace;}
  .eyebrow{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px; letter-spacing:0.16em; text-transform:uppercase;
    color:var(--signal-dark); font-weight:600;
    display:flex; align-items:center; gap:8px;
  }
  .eyebrow::before{content:""; width:16px; height:1.5px; background:var(--signal); display:inline-block;}
  h1,h2,h3{
    font-family:'Fraunces',serif;
    font-weight:700;
    letter-spacing:-0.015em;
    line-height:1.05;
  }
  :focus-visible{outline:3px solid var(--signal); outline-offset:3px;}

  /* corner-bracket frame, signature motif inspired by technical inspection drawings */
  .framed{position:relative;}
  .framed::before,.framed::after{
    content:""; position:absolute; width:14px; height:14px;
    border-color:var(--signal); border-style:solid; opacity:0.7;
  }
  .framed::before{top:-1px; left:-1px; border-width:2px 0 0 2px;}
  .framed::after{bottom:-1px; right:-1px; border-width:0 2px 2px 0;}

  /* ---------- HEADER ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(243,247,252,0.9);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--hairline);
  }
  .nav{display:flex; align-items:center; justify-content:space-between; padding:16px 24px;}
  .logo{display:flex; align-items:center; gap:10px; font-family:'Fraunces',serif; font-weight:700; font-size:20px;}
  .logo .mark{
    width:36px; height:36px; border-radius:50%; background:var(--ink);
    display:flex; align-items:center; justify-content:center; flex-shrink:0;
  }
  .logo .mark svg{width:19px; height:19px;}
  .navlinks{display:flex; gap:34px; font-size:14px; font-weight:500;}
  .navlinks a{color:var(--steel); transition:color .15s; position:relative;}
  .navlinks a:hover{color:var(--ink);}
  .navcall{display:flex; align-items:center; gap:14px;}
  .btn{
    display:inline-flex; align-items:center; gap:8px; padding:12px 22px;
    font-weight:600; font-size:14px; border-radius:3px;
    transition:transform .12s, box-shadow .12s;
  }
  .btn-primary{background:var(--signal); color:#fff; box-shadow:0 6px 16px -6px rgba(47,111,237,0.55);}
  .btn-primary:hover{background:var(--signal-dark); transform:translateY(-1px);}
  .btn-ghost{border:1.5px solid var(--ink); color:var(--ink);}
  .btn-ghost:hover{background:var(--ink); color:#fff;}
  .menu-toggle{display:none; background:none; border:none; cursor:pointer; padding:8px;}
  .menu-toggle span{display:block; width:22px; height:2px; background:var(--ink); margin:5px 0;}

  /* ---------- HERO ---------- */
  .hero{padding:96px 0 104px; position:relative; overflow:hidden;}
  .hero-inner{max-width:720px; margin:0 auto; text-align:center;}
  .hero-inner .eyebrow{justify-content:center;}
  .zone-tag{
    display:inline-flex; align-items:center; gap:8px;
    font-family:'IBM Plex Mono',monospace; font-size:12px; font-weight:600; letter-spacing:0.05em;
    background:var(--panel); border:1px solid var(--hairline);
    padding:7px 14px; border-radius:20px; margin-bottom:26px;
  }
  .zone-tag .dot{width:7px; height:7px; border-radius:50%; background:var(--signal); box-shadow:0 0 0 4px var(--ice);}
  .hero h1{font-size:clamp(38px,5.4vw,62px); margin-bottom:24px;}
  .hero h1 .accent{color:var(--signal); font-style:italic;}
  .hero p.lead{font-size:17.5px; color:var(--steel); max-width:52ch; margin:0 auto 34px;}
  .hero-cta{display:flex; gap:14px; flex-wrap:wrap; justify-content:center;}

  /* ---------- TRUST BAR ---------- */
  .trustbar{border-top:1px solid var(--hairline); border-bottom:1px solid var(--hairline); background:var(--panel);}
  .trust-row{display:flex; flex-wrap:wrap; justify-content:space-between; padding:28px 0; gap:22px;}
  .trust-item{display:flex; align-items:center; gap:11px; font-size:13.5px; font-weight:600; color:var(--steel);}
  .trust-item .mono{color:var(--signal-dark); font-size:12px;}

  /* ---------- SECTION SHELL ---------- */
  section{padding:96px 0;}
  .section-head{max-width:640px; margin-bottom:56px;}
  .section-head h2{font-size:clamp(30px,3.6vw,42px); margin-top:12px;}
  .section-head p{color:var(--steel); margin-top:16px; font-size:16px;}

  /* ---------- SERVICES ---------- */
  .services-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:22px;}
  .service-card{
    background:var(--panel); border:1px solid var(--hairline); border-radius:8px;
    padding:34px 28px; display:flex; flex-direction:column; gap:15px;
    transition:transform .15s, box-shadow .15s;
  }
  .service-card:hover{transform:translateY(-4px); box-shadow:0 20px 32px -22px rgba(15,42,74,0.3);}
  .service-card .icon{width:54px; height:54px; border-radius:50%; background:var(--ice); display:flex; align-items:center; justify-content:center;}
  .service-card .icon svg{width:27px; height:27px;}
  .service-card .tp-code{
    font-family:'IBM Plex Mono',monospace; font-size:11px; font-weight:600;
    color:var(--signal-dark); letter-spacing:0.05em; border:1px solid currentColor;
    display:inline-block; padding:3px 9px; border-radius:2px; width:fit-content;
  }
  .service-card h3{font-size:21px; font-weight:700;}
  .service-card p{color:var(--steel); font-size:14.5px;}
  .service-card ul{list-style:none; font-size:13.5px; color:var(--steel);}
  .service-card ul li{padding:4px 0; border-top:1px dashed var(--hairline);}
  .service-card ul li:first-child{border-top:none; padding-top:8px;}

  /* ---------- PRICING ---------- */
  .pricing-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:22px; align-items:stretch;}
  .price-card{
    background:var(--panel); border:1px solid var(--hairline); border-radius:8px;
    padding:34px 28px; display:flex; flex-direction:column; gap:16px;
    position:relative;
  }
  .price-card.featured{
    border:2px solid var(--signal);
    box-shadow:0 24px 44px -26px rgba(47,111,237,0.45);
  }
  .price-badge{
    position:absolute; top:-13px; left:28px;
    background:var(--signal); color:#fff;
    font-family:'IBM Plex Mono',monospace; font-size:11px; font-weight:600;
    letter-spacing:0.08em; padding:5px 12px; border-radius:3px;
  }
  .price-card h3{font-size:20px; font-weight:700;}
  .price{display:flex; align-items:baseline; gap:8px;}
  .price .amount{font-family:'Fraunces',serif; font-weight:700; font-size:42px; color:var(--ink); letter-spacing:-0.02em;}
  .price .ttc{font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--steel); font-weight:600;}
  .price-desc{color:var(--steel); font-size:14.5px;}
  .price-card ul{list-style:none; font-size:13.5px; color:var(--steel); flex-grow:1;}
  .price-card ul li{padding:6px 0; border-top:1px dashed var(--hairline); padding-left:20px; position:relative;}
  .price-card ul li::before{content:"✓"; position:absolute; left:0; color:var(--signal); font-weight:700;}
  .price-card ul li:first-child{border-top:none;}
  .price-card .btn{justify-content:center;}
  .price-note{
    margin-top:26px; font-size:13px; color:var(--steel);
    font-family:'IBM Plex Mono',monospace; letter-spacing:0.02em;
  }

  /* ---------- PROCESS ---------- */
  .process{background:var(--ink); color:var(--paper); position:relative;}
  .process .section-head p{color:#A9C0E0;}
  .process .eyebrow{color:#8FB4F5;}
  .process .eyebrow::before{background:#8FB4F5;}
  .process-steps{display:grid; grid-template-columns:repeat(3,1fr); gap:36px;}
  .step{border-top:2px solid var(--signal); padding-top:20px;}
  .step .num{font-family:'IBM Plex Mono',monospace; font-size:12px; color:#8FB4F5; font-weight:600;}
  .step h3{font-size:20px; margin:12px 0; font-weight:700;}
  .step p{font-size:14.5px; color:#A9C0E0;}

  /* ---------- ZONE ---------- */
  .zone-layout{display:grid; grid-template-columns:0.95fr 1.05fr; gap:60px; align-items:start;}
  .commune-list{display:grid; grid-template-columns:1fr 1fr; gap:0; border-top:1px solid var(--hairline);}
  .commune-list div{padding:14px 4px; border-bottom:1px solid var(--hairline); font-size:15px; font-weight:500; display:flex; justify-content:space-between;}
  .commune-list div .mono{font-size:11px; color:var(--steel);}
  .zone-hq{background:var(--panel); border:1px solid var(--hairline); padding:30px; border-radius:8px;}
  .zone-hq .icon-row{display:flex; align-items:center; gap:12px; margin-bottom:18px;}
  .zone-hq .icon-row .icon{width:44px; height:44px; border-radius:50%; background:var(--ice); display:flex; align-items:center; justify-content:center;}
  .zone-hq .icon-row .icon svg{width:22px; height:22px;}
  .zone-hq h3{font-size:23px; margin-bottom:12px;}
  .zone-hq p{color:var(--steel); font-size:14.5px; margin-bottom:20px;}

  /* ---------- FAQ (SEO: contenu riche en mots-clés longue traîne) ---------- */
  .faq{max-width:820px;}
  details{border-bottom:1px solid var(--hairline); padding:20px 0;}
  summary{
    font-family:'Fraunces',serif; font-weight:700; font-size:17px;
    cursor:pointer; list-style:none; display:flex; justify-content:space-between; align-items:center; gap:16px;
  }
  summary::-webkit-details-marker{display:none;}
  summary::after{content:"+"; font-family:'IBM Plex Mono',monospace; color:var(--signal); font-size:20px; flex-shrink:0;}
  details[open] summary::after{content:"–";}
  details p{color:var(--steel); font-size:15px; margin-top:12px; max-width:68ch;}

  /* ---------- CONTACT / FOOTER ---------- */
  .contact{background:var(--panel); border-top:1px solid var(--hairline);}
  .contact-grid{display:grid; grid-template-columns:1.1fr 0.9fr; gap:60px; align-items:center;}
  .contact h2{font-size:clamp(30px,3.8vw,44px); margin-bottom:18px;}
  .contact p.lead{color:var(--steel); font-size:16.5px; margin-bottom:30px; max-width:44ch;}
  .contact-card{background:var(--ink); color:var(--paper); padding:36px; border-radius:8px;}
  .contact-card .eyebrow{color:#8FB4F5; margin-bottom:16px;}
  .contact-card .eyebrow::before{background:#8FB4F5;}
  .contact-line{display:flex; justify-content:space-between; align-items:baseline; padding:15px 0; border-bottom:1px solid rgba(255,255,255,0.14); font-size:14.5px;}
  .contact-line:last-child{border-bottom:none;}
  .contact-line .mono{font-size:15px; font-weight:600;}

  footer{padding:30px 0; border-top:1px solid var(--hairline);}
  .footer-row{display:flex; justify-content:space-between; align-items:center; font-size:13px; color:var(--steel); flex-wrap:wrap; gap:10px;}

  /* ---------- RESPONSIVE ---------- */
  @media (max-width:860px){
    .navlinks{display:none;}
    .menu-toggle{display:block;}
    .services-grid{grid-template-columns:1fr;}
    .pricing-grid{grid-template-columns:1fr;}
    .process-steps{grid-template-columns:1fr; gap:26px;}
    .zone-layout{grid-template-columns:1fr;}
    .contact-grid{grid-template-columns:1fr;}
    .commune-list{grid-template-columns:1fr;}
    .trust-row{justify-content:flex-start;}
  }

  /* ---------- CONTENT PAGES ---------- */
  .page-hero{padding:72px 0 56px;}
  .page-hero h1{font-size:clamp(32px,4.4vw,50px); margin:14px 0 20px;}
  .page-hero p.lead{font-size:17px; color:var(--steel); max-width:60ch;}
  .content-section{padding:56px 0;}
  .content-section h2{font-size:clamp(24px,3vw,32px); margin-bottom:18px;}
  .content-section p{color:var(--steel); font-size:15.5px; max-width:70ch; margin-bottom:16px;}
  .content-section ul.checks{list-style:none; margin:18px 0; max-width:70ch;}
  .content-section ul.checks li{padding:8px 0 8px 26px; position:relative; color:var(--steel); font-size:15px; border-bottom:1px dashed var(--hairline);}
  .content-section ul.checks li::before{content:"\2713"; position:absolute; left:0; color:var(--signal); font-weight:700;}
  .cta-band{background:var(--ink); color:var(--paper); border-radius:10px; padding:40px; display:flex; justify-content:space-between; align-items:center; gap:24px; flex-wrap:wrap; margin:40px 0;}
  .cta-band h2{font-size:clamp(22px,2.6vw,30px); color:var(--paper);}
  .cta-band p{color:#A9C0E0; margin-top:8px; font-size:15px;}
  .linkgrid{display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-top:24px;}
  .linkgrid a{background:var(--panel); border:1px solid var(--hairline); border-radius:6px; padding:14px 16px; font-size:14px; font-weight:600; transition:border-color .15s, transform .15s;}
  .linkgrid a:hover{border-color:var(--signal); transform:translateY(-2px);}
  .linkgrid a .mono{display:block; font-size:11px; color:var(--steel); font-weight:500; margin-top:4px;}
  .breadcrumb{font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--steel);}
  .breadcrumb a{color:var(--signal-dark);}
  @media (max-width:860px){ .linkgrid{grid-template-columns:1fr 1fr;} .cta-band{padding:28px;} }