:root{
  --bg:#ffffff;
  --bg2:#f4f7fb;
  --ink:#0f2138;
  --navy:#10233f;
  --navy-2:#1b3a63;
  --gold:#b8862f;
  --gold-d:#9c6f22;
  --muted:#5a6b81;
  --line:#e4eaf2;
  --shadow:0 18px 44px rgba(16,35,63,.12);
  --shadow-sm:0 4px 14px rgba(16,35,63,.06);
  --f:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--f);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.14;letter-spacing:-.02em;color:var(--navy)}
img{max-width:100%;height:auto;display:block}

/* boutons : pleins et CARRÉS, jamais de contour, jamais d'arrondi */
.btn{display:inline-block;padding:15px 28px;border-radius:0;font-weight:600;font-size:15px;border:0;cursor:pointer;transition:transform .12s ease,background .12s ease;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-2)}
.btn-gold{background:var(--gold);color:#fff}
.btn-gold:hover{background:var(--gold-d)}
.btn-light{background:#fff;color:var(--navy)}
.btn-light:hover{background:#eef2f8}
.btn-lg{padding:17px 34px;font-size:16px}
.link-arrow{font-weight:600;color:var(--navy);border-bottom:2px solid var(--gold);padding-bottom:2px}
.link-arrow:after{content:" →"}

/* header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:28px;height:74px}
.brand img{display:block}
.main-nav{display:flex;gap:26px;margin-left:14px}
.main-nav a{color:var(--muted);font-weight:500;font-size:15px}
.main-nav a:hover{color:var(--navy)}
.header-cta{margin-left:auto;padding:12px 22px;font-size:14px}

/* hero — image plein cadre, texte par-dessus */
.hero{position:relative;min-height:600px;display:flex;align-items:center;background-size:cover;background-position:center right;background-repeat:no-repeat}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.85) 42%,rgba(255,255,255,.35) 68%,rgba(255,255,255,0) 100%)}
.hero-inner{position:relative;z-index:1;width:100%}
.hero-text{max-width:600px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--gold);margin-bottom:18px}
.hero h1{font-size:56px;font-weight:800;margin-bottom:22px}
.lead{font-size:19px;color:var(--muted);max-width:540px;margin-bottom:30px}
.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.trust-row{list-style:none;display:flex;gap:22px;flex-wrap:wrap}
.trust-row li{font-size:14px;color:var(--muted);position:relative;padding-left:22px}
.trust-row li:before{content:"";position:absolute;left:0;top:7px;width:12px;height:12px;background:var(--gold)}

/* strip piliers */
.strip{background:var(--navy);color:#fff}
.strip-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:30px 24px;text-align:center}
.strip-inner strong{display:block;font-size:20px;font-weight:800;color:#fff;margin-bottom:4px}
.strip-inner span{font-size:14px;color:#b9c6da}

/* sections */
.section{padding:82px 0}
.section-alt{background:var(--bg2)}
.section-head{max-width:660px;margin:0 auto 46px;text-align:center}
.section-head h2{font-size:38px;font-weight:800;margin-bottom:14px}
.section-head p{font-size:18px;color:var(--muted)}

/* cartes */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:0;padding:30px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column}
.card h3{font-size:21px;margin-bottom:12px}
.card p{color:var(--muted);font-size:15px;flex:1}
.devis{display:inline-block;margin-top:18px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--gold)}

/* veille (split) */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split h2{font-size:36px;font-weight:800;margin-bottom:16px}
.split-text p{color:var(--muted);font-size:17px;margin-bottom:14px}
.split-text .btn{margin-top:10px}
.note-inline{font-size:14px;color:var(--ink);background:#fff;border-left:3px solid var(--gold);padding:13px 16px;border-radius:0}
.split-visual img{width:100%;border-radius:0;box-shadow:var(--shadow)}
.split.reverse .split-visual{order:-1}

/* grilles conseil / pourquoi */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feat{background:#fff;border:1px solid var(--line);border-radius:0;padding:28px}
.section-alt .feat{background:#fff}
.feat h4{font-size:18px;margin-bottom:10px}
.feat p{font-size:15px;color:var(--muted)}

/* méthode */
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.steps li{background:#fff;border:1px solid var(--line);border-radius:0;padding:28px}
.steps .num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;background:var(--navy);color:#fff;font-weight:800;margin-bottom:16px}
.steps h4{font-size:17px;margin-bottom:8px}
.steps p{font-size:14px;color:var(--muted)}

/* cta */
.cta{background:var(--navy);color:#fff;padding:88px 0}
.cta-inner{max-width:740px;margin:0 auto;text-align:center}
.cta h2{color:#fff;font-size:40px;font-weight:800;margin-bottom:16px}
.cta-inner > p{font-size:18px;color:#c3d0e2;margin-bottom:32px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:28px}
.cta-legal{font-size:13px;color:#93a4bd;max-width:600px;margin:0 auto;line-height:1.7}

/* footer */
.site-footer{background:#0c1b30;color:#c3d0e2;padding:44px 0}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.footer-brand p{font-size:14px;color:#8fa0b8;margin-top:10px}
.footer-links{display:flex;gap:24px;flex-wrap:wrap}
.footer-links a{color:#c3d0e2;font-size:14px}
.footer-links a:hover{color:#fff}

/* responsive */
@media(max-width:900px){
  .split{grid-template-columns:1fr}
  .split.reverse .split-visual{order:0}
  .cards,.grid-3{grid-template-columns:1fr}
  .grid-4,.steps,.strip-inner{grid-template-columns:1fr 1fr}
  .hero h1{font-size:42px}
  .hero{min-height:520px;background-position:center right -80px}
  .hero:before{background:linear-gradient(90deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.9) 60%,rgba(255,255,255,.55) 100%)}
  .main-nav{display:none}
}
@media(max-width:560px){
  .grid-4,.steps,.strip-inner{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .section{padding:56px 0}
}