*{margin:0;padding:0;box-sizing:border-box}
body{font-family:Arial,sans-serif;background:#f7f8fb;color:#2d2d2d;line-height:1.7}
.top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;padding:16px 8%;background:#283593;color:#fff}
.logo img{height:70px}
nav{display:flex;justify-content:center;gap:12px;background:#3949ab;padding:14px}
.btn{text-decoration:none;background:#26a69a;color:#fff;padding:10px 18px;border-radius:6px;font-weight:bold}
.hero{height:420px;background:url('couvreur1.jpg') center/cover no-repeat;display:flex;align-items:center;justify-content:center}
.box{background:rgba(40,53,147,.72);padding:36px;border-radius:10px;color:#fff;text-align:center}
.cta{display:inline-block;margin-top:16px;background:#ffca28;color:#222;text-decoration:none;padding:12px 20px;border-radius:6px;font-weight:bold}
section{max-width:1150px;margin:30px auto;background:#fff;padding:35px;border-radius:10px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.card{background:#fafafa;border-left:5px solid #26a69a;padding:20px;border-radius:8px}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:20px}
iframe{width:100%;height:300px;border:0;border-radius:8px}
footer{text-align:center;background:#283593;color:#fff;padding:20px}
@media(max-width:768px){.top{flex-direction:column;text-align:center}nav{flex-wrap:wrap}.contact{grid-template-columns:1fr}}