:root{
    /* Surfaces */
    --surface:#f7f9fb;
    --surface-white:#ffffff;
    --surface-low:#f2f4f6;
    --outline-variant:#e4e7ea;
    --hairline:#f1f5f9;

    /* Text */
    --ink:#191c1e;
    --ink-soft:#45464d;
    --ink-mute:#76777d;

    /* Brand */
    --navy:#131b2e;
    --navy-soft:#3f465c;
    --navy-pale:#dae2fd;
    --emerald:#006c49;
    --emerald-pale:#6cf8bb;
    --blue:#3980f4;
    --danger:#ba1a1a;

    /* Radii */
    --r-sm:.25rem; --r:.5rem; --r-md:.75rem; --r-lg:1rem; --r-xl:1.5rem; --r-full:9999px;

    /* Rhythm */
    --s-xs:4px; --s-sm:12px; --s-md:24px; --s-lg:48px; --s-xl:80px;
    --margin:32px;
    --maxw:1120px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  }

  body{
    margin:0;
    background:var(--surface);
    color:var(--ink);
    font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }

  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--margin)}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
  .face:focus-visible{outline:2px solid var(--blue);outline-offset:-2px;border-radius:var(--r)}

  :focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:var(--r-sm)}

  h1,h2,h3{font-family:Manrope,sans-serif;margin:0}
  h1{font-size:clamp(34px,5.2vw,56px);font-weight:700;line-height:1.08;letter-spacing:-.03em}
  h2{font-size:clamp(26px,3.4vw,36px);font-weight:700;line-height:1.2;letter-spacing:-.02em}
  h3{font-size:18px;font-weight:600;letter-spacing:-.01em}
  p{margin:0}

  .eyebrow{
    font-family:Inter;font-size:12px;font-weight:600;
    text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft);
  }

  /* ---------- Header ---------- */
  .site-head{
    position:sticky;top:0;z-index:20;
    background:rgba(247,249,251,.86);
    backdrop-filter:saturate(140%) blur(8px);
    border-bottom:1px solid var(--outline-variant);
  }
  .head-row{display:flex;align-items:center;justify-content:space-between;height:68px}
  .brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
  .mark{width:32px;height:32px;display:block;flex:none}
  .mark .ring,.mark .letter{stroke:var(--navy)}
  .mark .check{stroke:var(--emerald)}
  .brand b{font-family:Manrope;font-weight:700;font-size:17px;letter-spacing:-.01em}
  .head-nav{display:flex;gap:28px}
  .head-nav a{color:var(--ink-soft);text-decoration:none;font-size:14px;font-weight:500}
  .head-nav a:hover{color:var(--ink)}
  @media(max-width:860px){.head-nav{display:none}}

  /* ---------- Buttons + fields ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-family:Inter;font-size:14px;font-weight:600;
    padding:12px 18px;border-radius:var(--r);border:1px solid transparent;
    cursor:pointer;text-decoration:none;transition:background .15s,border-color .15s,transform .05s;
  }
  .btn:active{transform:translateY(1px)}
  .btn-primary{background:var(--navy);color:#fff}
  .btn-primary:hover{background:#20293f}
  .btn-ghost{background:var(--surface-white);color:var(--navy);border-color:var(--outline-variant)}
  .btn-ghost:hover{border-color:#c6c6cd}

  .field{
    width:100%;padding:13px 16px;font-family:Inter;font-size:15px;color:var(--ink);
    background:var(--surface-white);border:1px solid var(--outline-variant);border-radius:var(--r);
    transition:border-color .15s,box-shadow .15s;
  }
  .field::placeholder{color:var(--ink-mute)}
  .field:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(57,128,244,.14)}

  .capture{display:flex;gap:10px;max-width:460px}
  .capture .field{flex:1;min-width:0}
  @media(max-width:520px){.capture{flex-direction:column}.capture .btn{width:100%}}

  .capture-note{
    margin-top:12px;display:flex;gap:18px;flex-wrap:wrap;
    font-size:13px;color:var(--ink-mute);
  }
  .capture-note span{display:inline-flex;align-items:center;gap:6px}
  .tick{width:14px;height:14px;flex:none;color:var(--emerald)}

  .form-msg{margin-top:12px;font-size:13.5px;font-weight:500;color:var(--emerald);min-height:20px}

  /* ---------- Deadline strip ---------- */
  .strip{
    display:inline-flex;align-items:center;gap:12px;flex-wrap:wrap;
    background:var(--surface-white);border:1px solid var(--outline-variant);
    border-radius:var(--r-full);padding:7px 8px 7px 16px;margin-bottom:28px;
  }
  .pulse{width:8px;height:8px;border-radius:var(--r-full);background:var(--emerald);flex:none;position:relative}
  .pulse::after{
    content:"";position:absolute;inset:-4px;border-radius:var(--r-full);
    border:1px solid var(--emerald);opacity:.5;animation:ring 2.4s ease-out infinite;
  }
  @keyframes ring{0%{transform:scale(.6);opacity:.6}100%{transform:scale(1.5);opacity:0}}
  .strip-text{font-size:13.5px;color:var(--ink-soft)}
  .strip-count{
    font-family:Manrope;font-weight:700;font-size:13px;letter-spacing:-.01em;
    background:var(--navy);color:#fff;border-radius:var(--r-full);padding:5px 12px;
  }

  /* ---------- Hero ---------- */
  .hero{padding-top:var(--s-xl);padding-bottom:var(--s-lg)}
  .hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:var(--s-lg);align-items:start}
  @media(max-width:960px){.hero-grid{grid-template-columns:1fr;gap:var(--s-md)}}
  .hero p.lede{margin:20px 0 32px;font-size:18px;line-height:1.6;color:var(--ink-soft);max-width:520px}
  .hero .accent{color:var(--emerald)}

  /* ---------- Signature: the document ---------- */
  .doc{
    background:var(--surface-white);border:1px solid var(--outline-variant);
    border-radius:var(--r-lg);overflow:hidden;
    box-shadow:0 12px 32px -18px rgba(15,23,42,.28), 0 2px 6px -2px rgba(15,23,42,.06);
  }
  .doc-bar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:12px 16px;border-bottom:1px solid var(--hairline);background:var(--surface-low);
  }
  .doc-label{font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}
  .toggle{display:inline-flex;background:var(--surface-white);border:1px solid var(--outline-variant);border-radius:var(--r-full);padding:3px}
  .toggle button{
    font-family:Inter;font-size:12px;font-weight:600;color:var(--ink-soft);
    background:transparent;border:0;border-radius:var(--r-full);padding:6px 12px;cursor:pointer;
    transition:background .18s,color .18s;
  }
  .toggle button[aria-selected="true"]{background:var(--navy);color:#fff}

  .doc-body{position:relative;min-height:412px}
  .face{padding:28px;animation:fade .28s ease}
  .face[hidden]{display:none}
  @keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}

  /* PDF face */
  .inv-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:26px}
  .inv-title{font-family:Manrope;font-size:20px;font-weight:700;letter-spacing:-.01em}
  .inv-ref{font-family:"JetBrains Mono",monospace;font-size:11.5px;color:var(--ink-mute);margin-top:4px}
  .inv-from{text-align:right;font-size:12.5px;color:var(--ink-soft);line-height:1.6}
  .inv-parties{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:24px}
  .inv-parties .k{font-size:10.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:6px}
  .inv-parties .v{font-size:13.5px;color:var(--ink);font-weight:500}
  .inv-parties .s{font-size:12px;color:var(--ink-soft)}

  table.lines{width:100%;border-collapse:collapse;margin-bottom:20px}
  table.lines th{
    text-align:left;font-size:10.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
    color:var(--ink-mute);padding:0 0 8px;border-bottom:1px solid var(--hairline);
  }
  table.lines th.r,table.lines td.r{text-align:right}
  table.lines td{padding:12px 0;font-size:13.5px;border-bottom:1px solid var(--hairline);color:var(--ink-soft)}
  table.lines td.desc{color:var(--ink);font-weight:500}
  table.lines td.amt{font-family:Manrope;font-weight:700;color:var(--ink)}

  .inv-total{display:flex;justify-content:flex-end}
  .inv-total dl{margin:0;width:250px}
  .inv-total .row{display:flex;justify-content:space-between;padding:6px 0;font-size:13px;color:var(--ink-soft)}
  .inv-total .row.mute{font-size:12px;color:var(--ink-mute);border-bottom:1px dashed var(--outline-variant);padding-bottom:12px}
  .inv-total .row.grand{padding-top:14px;align-items:baseline}
  .inv-total .row.grand dt{font-family:Manrope;font-size:15px;font-weight:600;color:var(--ink)}
  .inv-total .row.grand dd{margin:0;font-family:Manrope;font-size:22px;font-weight:700;letter-spacing:-.02em;color:var(--ink)}

  /* XML face */
  .xml{
    font-family:"JetBrains Mono",monospace;font-size:11.5px;line-height:1.85;
    color:var(--ink-soft);white-space:pre;overflow-x:auto;margin:0;
  }
  .xml .t{color:var(--navy);font-weight:500}
  .xml .a{color:var(--blue)}
  .xml .v{color:var(--emerald);font-weight:500}
  .xml .c{color:var(--ink-mute)}

  .doc-foot{
    display:flex;align-items:center;gap:10px;padding:14px 20px;
    border-top:1px solid var(--hairline);background:var(--surface-low);
    font-size:12.5px;color:var(--ink-soft);
  }
  .badge-ok{
    display:inline-flex;align-items:center;gap:6px;
    background:rgba(0,108,73,.1);color:var(--emerald);
    font-size:11.5px;font-weight:600;border-radius:var(--r-full);padding:4px 10px;flex:none;
  }

  /* ---------- Sections ---------- */
  section{padding:var(--s-xl) 0}
  .sec-head{max-width:640px;margin-bottom:var(--s-md)}
  .sec-head h2{margin-top:10px}
  .sec-head p{margin-top:12px;color:var(--ink-soft);font-size:16.5px;line-height:1.6}

  .band{background:var(--surface-white);border-top:1px solid var(--outline-variant);border-bottom:1px solid var(--outline-variant)}

  /* Does / doesn't */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  @media(max-width:820px){.split{grid-template-columns:1fr}}
  .panel{background:var(--surface-white);border:1px solid var(--outline-variant);border-radius:var(--r-lg);padding:28px}
  .panel.quiet{background:var(--surface);border-style:dashed}
  .panel h3{margin-bottom:18px}
  .panel ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
  .panel li{display:flex;gap:12px;font-size:14.5px;color:var(--ink-soft);line-height:1.5}
  .panel li svg{flex:none;margin-top:3px}
  .panel .why{margin-top:20px;padding-top:18px;border-top:1px solid var(--hairline);font-size:13.5px;color:var(--ink-mute);line-height:1.6}

  /* Chain */
  .chain{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:var(--s-md)}
  @media(max-width:820px){.chain{grid-template-columns:1fr}}
  .link{background:var(--surface-white);border:1px solid var(--outline-variant);border-radius:var(--r-lg);padding:24px;position:relative}
  .link.self{border-color:var(--navy);box-shadow:0 0 0 3px rgba(19,27,46,.07)}
  .link .step{font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--ink-mute);letter-spacing:.04em}
  .link h3{margin:10px 0 8px}
  .link p{font-size:13.5px;color:var(--ink-soft);line-height:1.6}
  .link .tag{
    position:absolute;top:-11px;right:20px;background:var(--navy);color:#fff;
    font-size:10.5px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;
    border-radius:var(--r-full);padding:4px 10px;
  }

  /* Pricing */
  .plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:var(--s-md)}
  @media(max-width:900px){.plans{grid-template-columns:1fr}}
  .plan{background:var(--surface-white);border:1px solid var(--outline-variant);border-radius:var(--r-lg);padding:32px;display:flex;flex-direction:column}
  .plan.feature{background:var(--navy);border-color:var(--navy);color:#fff;position:relative}
  .plan .name{font-family:Manrope;font-size:17px;font-weight:600}
  .plan .for{font-size:13.5px;color:var(--ink-soft);margin-top:4px}
  .plan.feature .for{color:var(--navy-pale)}
  .plan .price{display:flex;align-items:baseline;gap:6px;margin:26px 0 6px}
  .plan .price b{font-family:Manrope;font-size:46px;font-weight:700;letter-spacing:-.03em;line-height:1}
  .plan .price span{font-size:15px;color:var(--ink-soft)}
  .plan.feature .price span{color:var(--navy-pale)}
  .plan .save{font-size:12.5px;font-weight:600;color:var(--emerald-pale);min-height:19px}
  .plan .cta{margin:24px 0 26px}
  .plan .cta .btn{width:100%}
  .plan.feature .btn{background:#fff;color:var(--navy)}
  .plan.feature .btn:hover{background:var(--navy-pale)}
  .plan ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
  .plan li{display:flex;gap:10px;font-size:14px;color:var(--ink-soft)}
  .plan.feature li{color:var(--navy-pale)}
  .plan li svg{flex:none;margin-top:3px;color:var(--emerald)}
  .plan.feature li svg{color:var(--emerald-pale)}
  .flag{
    position:absolute;top:-12px;left:50%;transform:translateX(-50%);
    background:var(--emerald);color:#fff;font-family:Manrope;font-weight:700;
    font-size:10.5px;letter-spacing:.05em;text-transform:uppercase;
    border-radius:var(--r-full);padding:6px 14px;white-space:nowrap;
  }
  .plans-note{margin-top:20px;font-size:13px;color:var(--ink-mute);text-align:center}

  /* Status / honesty block */
  .status{
    background:var(--surface-white);border:1px solid var(--outline-variant);
    border-radius:var(--r-lg);padding:32px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,320px);gap:var(--s-md);align-items:center;
  }
  @media(max-width:820px){.status{grid-template-columns:1fr}}
  .status p{color:var(--ink-soft);font-size:15px;line-height:1.65;margin-top:12px}
  .steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
  .steps li{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:var(--r);font-size:13.5px;background:var(--surface-low);color:var(--ink-soft)}
  .steps li.done{background:rgba(0,108,73,.08);color:var(--emerald);font-weight:500}
  .steps li.now{background:var(--navy);color:#fff;font-weight:500}

  /* FAQ */
  .faq{display:flex;flex-direction:column;gap:2px;margin-top:var(--s-md);max-width:800px}
  details{background:var(--surface-white);border:1px solid var(--outline-variant);border-radius:var(--r-md);padding:0}
  details+details{margin-top:10px}
  summary{
    list-style:none;cursor:pointer;padding:20px 24px;font-size:15.5px;font-weight:500;color:var(--ink);
    display:flex;align-items:center;justify-content:space-between;gap:16px;
  }
  summary::-webkit-details-marker{display:none}
  summary::after{content:"+";font-family:Manrope;font-size:20px;color:var(--ink-mute);font-weight:500;flex:none}
  details[open] summary::after{content:"–"}
  details .a{padding:0 24px 22px;font-size:14.5px;color:var(--ink-soft);line-height:1.7}

  /* Final CTA */
  .final{background:var(--navy);color:#fff;border-radius:var(--r-xl);padding:var(--s-lg) var(--margin);text-align:center;margin-bottom:var(--s-xl)}
  .final h2{color:#fff}
  .final p{color:var(--navy-pale);margin:14px auto 30px;max-width:460px;font-size:16px;line-height:1.6}
  .final .capture{margin:0 auto}
  .final .field{border-color:transparent}
  .final .btn-primary{background:var(--emerald);color:#fff}
  .final .btn-primary:hover{background:#008159}
  .final .capture-note{justify-content:center;color:var(--navy-pale)}
  .final .tick{color:var(--emerald-pale)}
  .final .form-msg{color:var(--emerald-pale)}

  /* Footer */
  footer{border-top:1px solid var(--outline-variant);padding:32px 0 48px}
  .foot-row{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
  .foot-brand{display:flex;align-items:center;gap:12px}
  .foot-brand .mark{width:24px;height:24px;flex:none}
  .foot-row p{font-size:13px;color:var(--ink-mute)}
  .foot-links{display:flex;gap:20px}
  .foot-links a{font-size:13px;color:var(--ink-mute);text-decoration:none}
  .foot-links a:hover{color:var(--ink)}

  /* ---------- Bouton « remonter en haut » ---------- */
  .to-top{
    position:fixed;right:24px;bottom:24px;z-index:30;
    width:44px;height:44px;flex:none;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--navy);color:#fff;border:1px solid rgba(255,255,255,.14);
    border-radius:var(--r-full);cursor:pointer;
    box-shadow:0 8px 24px -8px rgba(15,23,42,.5);
    opacity:0;visibility:hidden;transform:translateY(10px);
    transition:opacity .2s,transform .2s,visibility .2s,background .15s;
  }
  .to-top:hover{background:#20293f}
  .to-top.is-visible{opacity:1;visibility:visible;transform:none}
  .to-top svg{width:18px;height:18px}
  @media(max-width:520px){.to-top{right:16px;bottom:16px}}

  /* ---------- Ajustements petits écrans ---------- */
  @media(max-width:600px){
    :root{--margin:20px}          /* gouttières plus fines sur téléphone */
    .hero{padding-top:var(--s-lg)} /* moins de vide entre le header et le bandeau */
  }