:root{
    --ink:#0f172a; --muted:#5b6573; --faint:#8a93a1;
    --line:#e7eaf0; --line-strong:#d7dce5;
    --bg:#ffffff; --bg-soft:#f7f9fb;
    --green:#16a34a; --green-ink:#15803d; --blue:#3b82f6; --grey:#94a3b8;
    --radius-card:16px; --radius-btn:12px;
    --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
    --maxw:1120px;
  }
  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
    line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
  a{color:inherit}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

  /* ---------- top bar ---------- */
  header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.85);
    backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
  .bar{display:flex;align-items:center;justify-content:space-between;height:64px}
  .brand{display:flex;align-items:baseline;gap:9px;text-decoration:none;color:var(--ink)}
  .brand b{font-size:17px;font-weight:800;letter-spacing:-.02em}
  .brand b span{color:var(--green)}
  .brand small{color:var(--faint);font-size:12.5px;font-weight:500}
  .navlink{text-decoration:none;font-size:14px;font-weight:600;color:var(--ink);
    padding:9px 15px;border:1px solid var(--line-strong);border-radius:var(--radius-btn);
    transition:border-color .15s,background .15s}
  .navlink:hover{border-color:var(--ink);background:var(--bg-soft)}

  /* ---------- hero ---------- */
  .hero{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start;
    padding:76px 0 68px}
  .kicker{font-size:13px;font-weight:600;color:var(--green-ink);margin:0 0 18px}
  h1{font-size:44px;line-height:1.08;letter-spacing:-.03em;font-weight:800;margin:0 0 20px}
  .lede{font-size:18px;color:var(--muted);max-width:46ch;margin:0 0 30px}
  .cta{display:inline-flex;align-items:center;gap:9px;background:var(--ink);color:#fff;
    text-decoration:none;font-weight:650;font-size:15px;padding:13px 22px;border-radius:var(--radius-btn);
    transition:transform .12s ease,box-shadow .2s ease}
  .cta:hover{box-shadow:0 10px 26px rgba(15,23,42,.18)}
  .cta:active{transform:translateY(1px)}
  .cta svg{width:16px;height:16px}
  .row{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
  .textlink{text-decoration:none;font-size:15px;font-weight:600;color:var(--ink);
    border-bottom:2px solid var(--green);padding-bottom:1px}
  .textlink:hover{color:var(--green-ink)}
  .shot{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
    box-shadow:0 18px 50px rgba(15,23,42,.10);background:var(--bg-soft)}
  .shot img{display:block;width:100%;height:auto}
  .shot-link .shot{transition:box-shadow .2s ease,transform .12s ease}
  .shot-link:hover .shot{box-shadow:0 22px 60px rgba(15,23,42,.16);transform:translateY(-2px)}
  .shot figcaption{font-size:12.5px;color:var(--faint);padding:11px 15px;border-top:1px solid var(--line);
    background:#fff}

  /* ---------- aperçu produit : fenêtre carte + fiche du bien ---------- */
  .appwin{display:block;text-decoration:none;color:var(--ink);border:1px solid var(--line-strong);
    border-radius:18px;overflow:hidden;background:#fff;box-shadow:0 22px 56px rgba(15,23,42,.13);
    transition:box-shadow .2s ease,transform .12s ease}
  .appwin:hover{box-shadow:0 28px 68px rgba(15,23,42,.19);transform:translateY(-2px)}
  .appmap{position:relative;overflow:hidden;background:var(--bg-soft)}
  .appmap img{display:block;width:100%;height:auto}
  .appmap .tag{position:absolute;left:13px;top:13px;font-size:11px;font-weight:700;color:var(--ink);
    background:rgba(255,255,255,.92);backdrop-filter:blur(4px);border:1px solid var(--line);
    border-radius:8px;padding:5px 10px}
  .appcard{padding:15px 18px 16px;border-top:1px solid var(--line)}
  .rc-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:3px}
  .rc-title{font-size:14.5px;font-weight:750;letter-spacing:-.01em}
  .rc-badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:800;color:var(--green-ink);
    background:#dcfce7;border-radius:999px;padding:3px 9px;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}
  .rc-dot{width:7px;height:7px;border-radius:50%;background:var(--green)}
  .rc-addr{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--muted);margin:0 0 13px}
  .rc-addr svg{width:12px;height:12px;color:var(--green);flex:none}
  .rc-prices{display:flex;align-items:flex-end;gap:12px}
  .rc-col{display:flex;flex-direction:column;gap:2px}
  .rc-k{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--faint)}
  .rc-old{font-size:15px;font-weight:600;color:var(--muted);text-decoration:line-through;
    text-decoration-color:var(--line-strong)}
  .rc-new{font-size:21px;font-weight:800;letter-spacing:-.02em;color:var(--green-ink)}
  .rc-sep{color:var(--faint);padding-bottom:4px}
  .rc-sep svg{width:16px;height:16px;display:block}
  .rc-delta{margin-top:12px;font-size:12px;font-weight:750;color:var(--green-ink);
    background:#ecfdf3;border-radius:9px;padding:8px 11px;text-align:center}

  /* ---------- promo : analyse d'annonce ---------- */
  .promo{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
  .badge{display:inline-block;font-size:12px;font-weight:700;color:var(--green-ink);
    background:#dcfce7;border-radius:999px;padding:4px 12px;margin:0 0 14px}
  .fauxbox{display:block;text-decoration:none;color:inherit;border:1px solid var(--line-strong);
    border-radius:var(--radius-card);background:#fff;padding:16px;
    box-shadow:0 14px 40px rgba(15,23,42,.08);transition:box-shadow .2s ease,transform .12s ease}
  .fauxbox:hover{box-shadow:0 20px 54px rgba(15,23,42,.15);transform:translateY(-2px)}
  .fauxbox .field{display:flex;align-items:center;gap:10px;border:1px solid var(--line);
    border-radius:12px;padding:11px 13px;color:var(--faint);font-size:14px;background:var(--bg-soft)}
  .fauxbox .field .ph{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .fauxbox .go{margin-left:auto;display:inline-flex;align-items:center;gap:7px;background:var(--ink);
    color:#fff;font-weight:650;font-size:14px;padding:9px 14px;border-radius:10px;white-space:nowrap}
  .fauxbox .hint{margin:12px 4px 2px;font-size:13px;color:var(--faint)}
  .promo ul{margin:20px 0 0;padding:0;list-style:none;display:grid;gap:10px}
  .promo li{position:relative;padding-left:26px;color:var(--muted);font-size:15px}
  .promo li::before{content:"";position:absolute;left:0;top:6px;width:12px;height:12px;
    border-radius:50%;background:#dcfce7;border:2px solid var(--green)}

  /* ---------- sections ---------- */
  section{padding:66px 0}
  .band{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .lbl{font-size:13px;font-weight:700;color:var(--green-ink);margin:0 0 10px}
  h2{font-size:29px;line-height:1.15;letter-spacing:-.02em;font-weight:800;margin:0 0 10px}
  .sub{font-size:16px;color:var(--muted);max-width:56ch;margin:0 0 34px}

  /* démarche : suite numérotée */
  .steps{border-top:1px solid var(--line)}
  .step{display:grid;grid-template-columns:64px 1fr;gap:22px;padding:26px 0;
    border-bottom:1px solid var(--line);align-items:start}
  .step .no{font-size:22px;font-weight:800;color:var(--faint);font-variant-numeric:tabular-nums;
    letter-spacing:-.02em;line-height:1.2}
  .step h3{margin:0 0 5px;font-size:18px;font-weight:750;letter-spacing:-.01em}
  .step p{margin:0;color:var(--muted);font-size:15.5px;max-width:64ch}
  .step h3 .tag{font-size:12.5px;font-weight:600;color:var(--faint)}

  /* trois états */
  .states{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .state{padding:22px 20px;border:1px solid var(--line);border-radius:var(--radius-card);background:#fff}
  .dot{display:inline-block;width:11px;height:11px;border-radius:50%;margin-right:9px;vertical-align:middle}
  .state h3{margin:0 0 7px;font-size:16px;font-weight:750}
  .state p{margin:0;color:var(--muted);font-size:14.5px}

  /* limites */
  .limits{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;border-top:1px solid var(--line);padding-top:34px}
  .limit h3{margin:0 0 7px;font-size:16px;font-weight:750}
  .limit p{margin:0;color:var(--muted);font-size:15px}

  /* footer */
  footer{border-top:1px solid var(--line);padding:40px 0 56px}
  .foot{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
  .sources{font-size:13.5px;color:var(--faint);max-width:60ch}
  .sources b{color:var(--muted);font-weight:600}

  /* motion sobre : révélation douce, désactivée si l'utilisateur préfère */
  .reveal{opacity:0;transform:translateY(14px)}
  @media (prefers-reduced-motion:no-preference){
    .reveal{transition:opacity .6s ease,transform .6s ease}
  }
  .reveal.in{opacity:1;transform:none}

  /* ---------- responsive ---------- */
  @media (max-width:860px){
    .hero{grid-template-columns:1fr;gap:38px;padding:52px 0 44px}
    .promo{grid-template-columns:1fr;gap:30px}
    h1{font-size:36px}
    .states,.limits{grid-template-columns:1fr}
    .limits{gap:24px}
  }
  @media (max-width:520px){
    .wrap{padding:0 18px}
    h1{font-size:31px}
    .step{grid-template-columns:44px 1fr;gap:16px}
    .brand small{display:none}
    .navlink.hide-sm{display:none}
  }