:root{
    --ink:#101a16; --ink-2:#3c4c45; --ink-3:#6b7a73;
    --paper:#fbfaf7; --paper-2:#f2efe8; --line:#e2ddd2;
    --brand:#0b3d2e; --brand-2:#14614a; --accent:#c8952f;
    --surface:#fff; --hero:#f4f1ea; --head:rgba(251,250,247,.9); --on-brand:#fff; --on-brand-2:#e7efe9;
    --radius:14px; --wrap:960px;
  }
  @media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
    --ink:#e8eeea; --ink-2:#b9c6bf; --ink-3:#8a9a92; --paper:#0f1613; --paper-2:#18221e; --line:#2a3631;
    --brand-2:#6cc7a2; --surface:#141d19; --hero:#121b17; --head:rgba(15,22,19,.9); color-scheme:dark } }
  :root[data-theme="dark"]{
    --ink:#e8eeea; --ink-2:#b9c6bf; --ink-3:#8a9a92; --paper:#0f1613; --paper-2:#18221e; --line:#2a3631;
    --brand-2:#6cc7a2; --surface:#141d19; --hero:#121b17; --head:rgba(15,22,19,.9); color-scheme:dark }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth; -webkit-text-size-adjust:100%}
  body{
    margin:0; background:var(--paper); color:var(--ink);
    font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
    font-size:17px; line-height:1.62; -webkit-font-smoothing:antialiased;
  }
  .wrap{max-width:var(--wrap); margin-inline:auto; padding-inline:20px}
  h1,h2,h3{line-height:1.2; letter-spacing:-.02em; margin:0 0 .5em; font-weight:650}
  h1{font-size:clamp(1.9rem,4.6vw,2.9rem); letter-spacing:-.03em}
  h2{font-size:clamp(1.45rem,3vw,1.95rem)}
  h3{font-size:1.08rem; letter-spacing:-.01em}
  p{margin:0 0 1em} a{color:var(--brand-2)}
  .eyebrow{font-size:.76rem; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--accent); margin:0 0 .9rem}
  section{padding:clamp(52px,8vw,88px) 0; border-top:1px solid var(--line)}
  .muted{color:var(--ink-3)}

  /* en-tête */
  header{position:sticky; top:env(safe-area-inset-top,0px); z-index:20; background:var(--head); backdrop-filter:blur(10px); border-bottom:1px solid var(--line)}
  .nav{display:flex; align-items:center; gap:24px; height:62px}
  .logo{display:flex; align-items:center; gap:10px; color:var(--ink); text-decoration:none; font-weight:700; letter-spacing:-.02em}
  .logo .mark{width:28px; height:28px; border-radius:7px; background:var(--brand); color:var(--on-brand); display:grid; place-items:center; font-size:.78rem}
  .logo small{font-weight:500; color:var(--ink-3); font-size:.9rem}
  .nav nav{margin-left:auto; display:flex; gap:24px}
  .nav nav a{color:var(--ink-2); text-decoration:none; font-size:.95rem}
  .nav nav a:hover{color:var(--brand-2)}
  @media(max-width:700px){ .nav nav{display:none} }

  /* haut de page */
  .hero{border-top:0; background:linear-gradient(180deg,var(--hero) 0%,var(--paper) 100%)}
  .who{display:flex; align-items:center; gap:16px; margin-bottom:28px}
  .photo{width:84px; height:84px; flex:none; border-radius:50%; object-fit:cover; background:var(--brand); color:var(--on-brand); display:grid; place-items:center; font-weight:700; font-size:1.5rem}
  .who p{margin:0; color:var(--ink-2); font-size:.98rem; line-height:1.5}
  .who strong{color:var(--ink); font-size:1.05rem}
  .lede{font-size:clamp(1.05rem,2vw,1.22rem); color:var(--ink-2); max-width:60ch}
  .cta-row{display:flex; flex-wrap:wrap; gap:12px; margin-top:26px}
  .btn{display:inline-block; padding:12px 22px; border-radius:10px; text-decoration:none; font-weight:600; font-size:.97rem; transition:.15s}
  a:focus-visible{outline:2px solid var(--accent); outline-offset:2px}
  h1,h2,h3{text-wrap:balance}
  .btn-primary{background:var(--brand); color:var(--on-brand)}
  .btn-primary:hover{filter:brightness(1.25)}
  .btn-ghost{border:1px solid var(--line); color:var(--ink); background:var(--surface)}
  .btn-ghost:hover{border-color:var(--brand-2)}

  /* listes en cartes */
  .grid > *, .ba > *, .steps > *{min-width:0}
  .grid{display:grid; grid-template-columns:repeat(2,1fr); gap:16px; margin-top:28px}
  @media(max-width:700px){ .grid{grid-template-columns:1fr} }
  .card{background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:22px}
  .card p{margin:0; color:var(--ink-2)}
  .note{margin-top:22px; color:var(--ink-2)}

  /* exemples */
  .case{background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:24px; margin-top:18px}
  .case .tag{font-size:.8rem; font-weight:600; color:var(--accent); text-transform:uppercase; letter-spacing:.08em; margin-bottom:6px}
  .ba{display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:12px}
  @media(max-width:700px){ .ba{grid-template-columns:1fr} }
  .ba div{background:var(--paper-2); border-radius:10px; padding:14px 16px; font-size:.97rem; color:var(--ink-2)}
  .ba b{display:block; color:var(--ink); font-size:.82rem; text-transform:uppercase; letter-spacing:.06em; margin-bottom:4px}

  /* méthode */
  .steps{counter-reset:s; display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-top:26px; padding:0; list-style:none}
  @media(max-width:800px){ .steps{grid-template-columns:1fr 1fr} }
  @media(max-width:460px){ .steps{grid-template-columns:1fr} }
  .steps li{background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:18px; color:var(--ink-2); font-size:.96rem}
  .steps li::before{counter-increment:s; content:counter(s); display:grid; place-items:center; width:28px; height:28px; border-radius:50%; background:var(--brand); color:var(--on-brand); font-weight:700; font-size:.85rem; margin-bottom:10px}
  .steps strong{display:block; color:var(--ink)}
  .formules{margin-top:34px}

  /* contact */
  .contact{background:var(--brand); color:var(--on-brand-2); border-radius:18px; padding:clamp(28px,5vw,48px)}
  .contact h2{color:var(--on-brand)}
  .contact .btn-primary{background:var(--on-brand); color:var(--brand)}
  .contact .btn-ghost{background:transparent; color:var(--on-brand); border-color:rgba(255,255,255,.35)}

  footer{border-top:1px solid var(--line); padding:28px 0 40px; font-size:.86rem; color:var(--ink-3)}
  footer .links{display:flex; flex-wrap:wrap; gap:18px; margin-bottom:12px}
  footer a{color:var(--ink-2)}

  /* études de cas (pages exemples/) */
  .article{max-width:720px; margin-inline:auto}
  .article h1{font-size:clamp(1.7rem,4vw,2.5rem); margin-top:.2em}
  .article h2{margin-top:2em; padding-top:1.2em; border-top:1px solid var(--line)}
  .article h3{margin-top:1.8em}
  .article ul{padding-left:1.2em} .article li{margin-bottom:.5em}
  .article .bref{background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:20px 22px; margin:24px 0}
  .article .bref ul{margin:0}
  figure{margin:24px 0} figure img{display:block; width:100%; height:auto; border:1px solid var(--line); border-radius:10px; background:#fff}
  figcaption{font-size:.86rem; color:var(--ink-3); margin-top:8px}
  .table{overflow-x:auto; margin:18px 0}
  table{border-collapse:collapse; width:100%; font-size:.95rem}
  th,td{text-align:left; vertical-align:top; padding:10px 12px; border-bottom:1px solid var(--line)}
  th{font-size:.8rem; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-3)}
  .back{display:inline-block; margin-bottom:10px; font-size:.92rem}
  .case .thumb{display:block; margin:14px 0 4px} .case .thumb img{width:100%; height:auto; border:1px solid var(--line); border-radius:10px; display:block}
  .case .more{display:inline-block; margin-top:14px; font-weight:600}