:root{
  --blue:#204898;
  --blue-dark:#17356f;
  --orange:#f08028;
  --ink:#1c2434;
  --muted:#5b6575;
  --bg:#ffffff;
  --bg-soft:#f5f7fb;
  --line:#e4e8f0;
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
.container{max-width:1140px;margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.nav .logo img{height:46px;width:auto}
.nav ul{display:flex;gap:24px;list-style:none;align-items:center}
.nav ul a{color:var(--ink);font-weight:500;font-size:.94rem;transition:color .2s}
.nav ul a:hover{color:var(--orange)}
.nav ul a.active{color:var(--blue);font-weight:700;border-bottom:2px solid var(--orange);padding-bottom:3px}
.btn{display:inline-block;background:var(--orange);color:#fff !important;padding:10px 22px;border-radius:999px;font-weight:600;font-size:.95rem;transition:background .2s;border:none;cursor:pointer}
.btn:hover{background:#d96e18}
.btn-outline{background:transparent;border:2px solid #fff;color:#fff !important}
.btn-outline:hover{background:rgba(255,255,255,.15)}
.burger{display:none;background:none;border:none;cursor:pointer;padding:8px}
.burger span{display:block;width:24px;height:2.5px;background:var(--blue);margin:5px 0;border-radius:2px}

/* ---------- Hero accueil ---------- */
.hero{position:relative;min-height:74vh;display:flex;align-items:center;color:#fff;
  background:linear-gradient(rgba(23,42,84,.72),rgba(23,42,84,.55)),url('https://images.unsplash.com/photo-1509391366360-2e959784a276?auto=format&fit=crop&w=1920&q=80') center/cover no-repeat}
.hero .container{padding-top:80px;padding-bottom:80px}
.kicker{display:inline-block;background:var(--orange);color:#fff;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;padding:6px 14px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:clamp(2rem,4.5vw,3.3rem);line-height:1.15;font-weight:800;max-width:720px}
.hero p{margin:20px 0 32px;font-size:1.15rem;max-width:620px;color:#e8edf7}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Bannière de page intérieure ---------- */
.page-hero{position:relative;min-height:340px;display:flex;align-items:flex-end;color:#fff;
  background:linear-gradient(rgba(23,42,84,.72),rgba(23,42,84,.5)) center/cover no-repeat}
.page-hero .container{padding:56px 24px}
.page-hero h1{font-size:clamp(1.8rem,3.5vw,2.7rem);font-weight:800}
.page-hero p{color:#e8edf7;max-width:640px;margin-top:10px;font-size:1.08rem}
.breadcrumb{font-size:.85rem;color:#c6d2ec;margin-bottom:12px}
.breadcrumb a{color:#fff}

/* ---------- Bandeau chiffres ---------- */
.stats{background:var(--blue);color:#fff}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:34px 24px}
.stat{text-align:center}
.stat b{display:block;font-size:1.45rem;font-weight:800}
.stat span{font-size:.88rem;color:#c6d2ec}

/* ---------- Sections ---------- */
section{padding:84px 0}
.section-soft{background:var(--bg-soft)}
.eyebrow{color:var(--orange);font-weight:700;text-transform:uppercase;letter-spacing:.12em;font-size:.82rem;margin-bottom:10px}
h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;color:var(--ink);margin-bottom:14px}
h3.sub{font-size:1.25rem;color:var(--blue);margin:34px 0 10px}
.lead{color:var(--muted);font-size:1.08rem;max-width:760px}
p + p{margin-top:14px}

/* ---------- Cartes ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:48px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-5px);box-shadow:0 14px 34px rgba(23,53,111,.13)}
.card .thumb{height:190px;overflow:hidden;background:var(--bg-soft)}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .body{padding:26px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:1.22rem;color:var(--blue);margin-bottom:6px}
.card .range{color:var(--orange);font-weight:700;font-size:.92rem;margin-bottom:14px}
.card p{color:var(--muted);font-size:.96rem;flex:1}
.card .more{margin-top:18px;font-weight:600;color:var(--orange)}

/* ---------- Prestations ---------- */
.prestations{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
.presta{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;gap:16px;align-items:flex-start}
.presta .ico{flex:0 0 44px;height:44px;border-radius:11px;background:rgba(240,128,40,.13);display:flex;align-items:center;justify-content:center;font-size:1.3rem}
.presta h4{font-size:1rem;margin-bottom:4px}
.presta p{color:var(--muted);font-size:.9rem}

/* ---------- Listes à puces ---------- */
.checklist{list-style:none;margin-top:20px}
.checklist li{padding-left:34px;position:relative;margin-bottom:13px}
.checklist li::before{content:'✓';position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:rgba(240,128,40,.15);color:var(--orange);font-weight:800;font-size:.85rem;display:flex;align-items:center;justify-content:center}

/* ---------- Split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split .visual img{border-radius:var(--radius);width:100%;height:400px;object-fit:cover}

/* ---------- Callout ---------- */
.callout{background:linear-gradient(115deg,var(--blue) 0%,var(--blue-dark) 100%);border-radius:var(--radius);color:#fff;padding:48px;display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.callout h3{font-size:1.45rem;margin-bottom:8px}
.callout p{color:#c6d2ec;max-width:560px}

/* ---------- Segments (types d'installations) ---------- */
.segments{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.segment{background:#fff;border:1px solid var(--line);border-left:4px solid var(--orange);border-radius:10px;padding:24px}
.segment h4{color:var(--blue);font-size:1.05rem;margin-bottom:8px}
.segment p{color:var(--muted);font-size:.93rem}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;margin-top:44px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.contact-card h4{color:var(--blue);font-size:1.05rem;margin-bottom:6px}
.contact-card p{color:var(--muted)}
.contact-card + .contact-card{margin-top:20px}
.map iframe{width:100%;min-height:300px;border:0;border-radius:var(--radius)}
form .field{margin-bottom:18px}
form label{display:block;font-weight:600;font-size:.92rem;margin-bottom:6px}
form input,form select,form textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
form input:focus,form select:focus,form textarea:focus{outline:2px solid var(--blue);border-color:var(--blue)}
form textarea{min-height:130px;resize:vertical}

/* ---------- CTA bas de page ---------- */
.cta-final{background:linear-gradient(115deg,var(--blue) 0%,var(--blue-dark) 100%);color:#fff;text-align:center}
.cta-final h2{color:#fff}
.cta-final p{color:#c6d2ec;max-width:640px;margin:0 auto 28px}

/* ---------- Footer ---------- */
footer{background:var(--blue-dark);color:#c6d2ec;padding:48px 0 30px}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;align-items:flex-start}
footer img{height:44px;margin-bottom:14px}
footer h5{color:#fff;font-size:.95rem;margin-bottom:10px;text-transform:uppercase;letter-spacing:.08em}
footer ul{list-style:none}
footer ul li{margin-bottom:8px}
footer ul a{color:#c6d2ec;font-size:.92rem}
footer ul a:hover{color:#fff}
footer .small{font-size:.85rem}
footer .legal{border-top:1px solid rgba(255,255,255,.15);margin-top:34px;padding-top:20px;font-size:.82rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
footer a{color:#fff}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .cards,.prestations,.segments{grid-template-columns:1fr 1fr}
  .split,.contact-grid{grid-template-columns:1fr}
  .stats .container{grid-template-columns:repeat(2,1fr)}
  .split .visual img{height:300px}
  footer .cols{grid-template-columns:1fr}
}
@media(max-width:640px){
  .cards,.prestations,.segments{grid-template-columns:1fr}
  .nav ul{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;flex-direction:column;gap:0;border-bottom:1px solid var(--line);padding:10px 0}
  .nav ul.open{display:flex}
  .nav ul li{width:100%;text-align:center;padding:12px 0}
  .burger{display:block}
  .callout{padding:32px}
  section{padding:60px 0}
}