:root{
  --bg:#f1f2f4;
  --card:#ffffff;
  --soft:#f7f8f9;
  --ink:#0e0f11;
  --muted:#6b6f76;
  --line:#e7e9ec;
  --r-out:32px;
  --r-in:18px;
  --r-btn:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:'Instrument Sans',system-ui,-apple-system,sans-serif;
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.028em;line-height:1.1}
p{margin:0}
a{color:inherit;text-decoration:none}

.shell{max-width:1120px;margin:0 auto;padding:18px;min-height:100dvh;display:flex;flex-direction:column}

/* barre du haut */
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 18px 22px;flex-shrink:0}
.logo{font-size:19px;font-weight:600;letter-spacing:-.02em}
.nav .links{display:flex;align-items:center;gap:26px}
.nav .lnk{font-size:14.5px;font-weight:500;color:var(--muted);transition:color .2s}
.nav .lnk:hover{color:var(--ink)}
.nav .lnk.on{color:var(--ink)}
.nav a.pill{
  font-size:14px;font-weight:500;padding:10px 20px;border-radius:var(--r-btn);
  background:var(--ink);color:#fff;transition:opacity .2s;
}
.nav a.pill:hover{opacity:.82}

/* cadre */
.frame{
  background:var(--card);border-radius:var(--r-out);
  border:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,18,22,.04),0 12px 40px -18px rgba(16,18,22,.14);
  padding:0 clamp(24px,5vw,64px);
}
.frame.center{flex:1;display:flex;align-items:center}
.blk{padding:clamp(52px,6.5vw,82px) 0;border-top:1px solid var(--line)}
.blk:first-child{border-top:0}

.tag{
  display:inline-block;font-size:11.5px;font-weight:500;letter-spacing:.1em;
  text-transform:uppercase;color:var(--muted);margin-bottom:22px;
}

/* accueil */
.hero{padding:clamp(40px,7vw,72px) 0;width:100%}
h1{font-size:clamp(36px,5.4vw,60px);max-width:16ch}
.lede{margin-top:24px;max-width:54ch;font-size:19px;color:var(--muted)}
.row{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px}
.btn{
  display:inline-block;font-size:15px;font-weight:500;padding:14px 26px;border-radius:var(--r-btn);
  background:var(--ink);color:#fff;border:1px solid var(--ink);transition:opacity .2s;
  cursor:pointer;font-family:inherit;
}
.btn:hover{opacity:.85}
.btn2{
  display:inline-block;font-size:15px;font-weight:500;padding:14px 24px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--card);transition:border-color .2s;
}
.btn2:hover{border-color:var(--ink)}

h2{font-size:clamp(25px,3.2vw,36px);max-width:20ch}
.sub{margin-top:16px;max-width:56ch;color:var(--muted)}

/* citations */
.grid3{margin-top:38px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.quote{background:var(--soft);border-radius:var(--r-in);padding:28px 26px}
.quote p{font-size:17px;line-height:1.45;letter-spacing:-.01em}
.quote span{display:block;margin-top:16px;font-size:12px;color:var(--muted)}
.punch{margin-top:32px;font-size:clamp(19px,2.2vw,23px);font-weight:500;letter-spacing:-.02em;max-width:38ch;line-height:1.35}
.punch em{font-style:normal;color:var(--muted)}

/* deux colonnes */
.grid2{margin-top:38px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.pane{background:var(--soft);border-radius:var(--r-in);padding:32px 28px}
.pane h3{font-size:17px;margin-bottom:20px}
.pane ul{list-style:none;margin:0;padding:0}
.pane li{position:relative;padding-left:22px;margin-bottom:14px;font-size:15.5px;line-height:1.5;color:var(--muted)}
.pane li:last-child{margin-bottom:0}
.pane li::before{content:"";position:absolute;left:0;top:9px;width:9px;height:1px;background:var(--ink);opacity:.4}
.pane.off li::before{width:9px;height:9px;top:6px;border-radius:50%;background:none;border:1px solid #cfd3d8;opacity:1}

/* prestations */
.offers{margin-top:38px;display:grid;gap:12px}
.offer{
  background:var(--soft);border-radius:var(--r-in);padding:30px 28px;
  display:grid;grid-template-columns:1fr auto;gap:28px;align-items:start;
}
.offer .fmt{font-size:12px;font-weight:500;color:var(--muted);margin-bottom:10px}
.offer h3{font-size:22px;margin-bottom:12px}
.offer p{font-size:15.5px;color:var(--muted);max-width:56ch}
.offer .plus{margin-top:12px;font-size:14px;color:#93979e;max-width:56ch}
.price{font-size:25px;font-weight:600;letter-spacing:-.03em;white-space:nowrap;text-align:right}
.price small{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:4px;letter-spacing:0}

/* étapes */
.grid4{margin-top:38px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.step{background:var(--soft);border-radius:var(--r-in);padding:26px 24px}
.step .n{
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:50%;background:var(--ink);color:#fff;
  font-size:12px;font-weight:600;margin-bottom:16px;
}
.step h3{font-size:16px;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--muted)}

/* à propos */
.about .lead{margin-top:22px;font-size:20px;font-weight:500;letter-spacing:-.02em;max-width:44ch}
.about p.t{margin-top:18px;max-width:58ch;color:var(--muted)}

/* formulaire */
form{margin-top:36px;max-width:660px}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.fld{margin-bottom:14px}
label{display:block;font-size:13px;font-weight:500;color:var(--muted);margin-bottom:7px}
input,textarea{
  width:100%;background:var(--soft);border:1px solid transparent;border-radius:var(--r-btn);
  padding:13px 15px;font-family:inherit;font-size:15.5px;color:var(--ink);
}
input:focus,textarea:focus{outline:none;border-color:var(--ink);background:var(--card)}
textarea{min-height:112px;resize:vertical}
.note{margin-top:14px;font-size:13.5px;color:var(--muted)}
.direct{
  margin-top:30px;padding:22px 26px;background:var(--soft);border-radius:var(--r-in);
  font-size:15px;color:var(--muted);max-width:660px;
}
.direct b{font-weight:600;color:var(--ink)}

/* pied */
.foot{
  display:flex;flex-wrap:wrap;gap:8px 26px;justify-content:space-between;
  padding:26px 20px 8px;font-size:13.5px;color:var(--muted);flex-shrink:0;
}

@media(max-width:900px){
  .grid3,.grid2,.grid4{grid-template-columns:1fr}
  .offer{grid-template-columns:1fr;gap:16px}
  .price{text-align:left}
  .f2{grid-template-columns:1fr}
  .shell{padding:10px}
  .frame{border-radius:26px}
  .nav .links{gap:18px}
  .nav .lnk{font-size:13.5px}
}
@media(prefers-reduced-motion:no-preference){
  .rv{opacity:0;transform:translateY(12px);animation:up .65s cubic-bezier(.22,.7,.3,1) forwards}
  .rv:nth-child(2){animation-delay:.06s}
  .rv:nth-child(3){animation-delay:.12s}
  .rv:nth-child(4){animation-delay:.18s}
  @keyframes up{to{opacity:1;transform:none}}
}