:root{
  --primaire:#2a5d8f;
  --accent:#f4a259;
  --fond:#faf7f2;
  --texte:#2b2b2b;
  --carte:#ffffff;
  --border:#e5ded3;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--fond);color:var(--texte);line-height:1.7}
a{color:var(--primaire)}
h1,h2,h3{line-height:1.25;color:var(--primaire)}
.site-header{background:var(--primaire);padding:.8rem 0;position:sticky;top:0;z-index:10;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.nav-wrap{max-width:1100px;margin:0 auto;display:flex;flex-wrap:wrap;align-items:center;gap:1rem;padding:0 1rem}
.logo{color:#fff;font-weight:800;font-size:1.25rem;text-decoration:none;letter-spacing:.5px}
nav ul{display:flex;flex-wrap:wrap;gap:.2rem;list-style:none}
nav a{color:#dbe7f3;text-decoration:none;font-size:.92rem;padding:.35rem .6rem;border-radius:6px}
nav a:hover{background:rgba(255,255,255,.15);color:#fff}
nav a.actif{background:var(--accent);color:#fff;font-weight:600}
main{max-width:1100px;margin:0 auto;padding:2rem 1rem}
.hero{background:linear-gradient(135deg,#2a5d8f,#3d7ab8);color:#fff;border-radius:16px;padding:3rem 2rem;margin-bottom:2.5rem;text-align:center}
.hero h1{color:#fff;font-size:2.2rem;margin-bottom:1rem}
.hero p{max-width:700px;margin:0 auto;font-size:1.1rem;color:#eaf2fa}
.section-titre{margin:2.5rem 0 1rem;font-size:1.5rem;border-left:5px solid var(--accent);padding-left:.7rem}
.grille-cartes{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.2rem;margin:1.5rem 0}
.carte{background:var(--carte);border:1px solid var(--border);border-radius:12px;padding:1.4rem;transition:transform .15s, box-shadow .15s}
.carte:hover{transform:translateY(-3px);box-shadow:0 6px 18px rgba(0,0,0,.08)}
.carte h3{margin-bottom:.5rem;font-size:1.08rem}
.carte h3 a{text-decoration:none}
.carte p{font-size:.95rem}
.encadre{background:#fff;border:1px solid var(--border);border-radius:10px;padding:1.1rem 1.3rem;margin:1.5rem 0}
.encadre.alerte{background:#fdf3ec;border-color:#f0c9a8;border-left:5px solid var(--accent)}
.encadre.info{background:#eef5fb;border-color:#c6dcf0;border-left:5px solid var(--primaire)}
.encadre.succes{background:#eefaf0;border-color:#bfe5c7;border-left:5px solid #3f9d55}
.fils{font-size:.85rem;color:#777;margin-bottom:1.2rem}
.fils a{color:#777}
table{width:100%;border-collapse:collapse;margin:1.5rem 0;background:#fff;border-radius:10px;overflow:hidden}
th,td{padding:.7rem .9rem;border-bottom:1px solid var(--border);text-align:left;font-size:.95rem}
th{background:var(--primaire);color:#fff}
tr:nth-child(even){background:#f4f7fa}
ul.liste{margin:.8rem 0 1.2rem 1.4rem}
li{margin-bottom:.35rem}
footer{background:#22405e;color:#c9d8e6;margin-top:3rem}
.footer-wrap{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;padding:2rem 1rem}
.footer-wrap h4{color:#fff;margin-bottom:.5rem}
.footer-wrap ul{list-style:none}
.footer-wrap a{color:#c9d8e6;text-decoration:none;font-size:.92rem}
.footer-wrap a:hover{color:#fff}
.copyright{max-width:1100px;margin:0 auto;padding:1rem;text-align:center;font-size:.85rem;border-top:1px solid rgba(255,255,255,.15)}
@media(max-width:700px){
  .hero h1{font-size:1.6rem}
  nav ul{gap:0}
}

.img-illustration{width:100%;max-width:100%;border-radius:12px;display:block;margin:0 auto}
figure.illus{margin:1.5rem 0;text-align:center}
figure.illus figcaption{font-size:.82rem;color:#888;margin-top:.4rem;font-style:italic}
.hero-img{width:100%;height:260px;object-fit:cover;border-radius:16px 16px 0 0;display:block;margin-bottom:-2px}