:root{--bleu:#1D3C8F;--bleu-dk:#0E2260;--soleil:#F9C433;--rouge:#D21034;--clair:#EEF2FB;--ink:#141B2E;--muted:#4F5B73;--line:#DCE3F2}
*{box-sizing:border-box}
body{margin:0;font:17px/1.7 "Source Sans 3","Segoe UI",Arial,sans-serif;color:var(--ink);background:#fff}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{width:min(1120px,92%);margin:0 auto}

/* En-tête et menu */
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand b{display:block;font:700 18px/1.1 Fraunces,serif;color:var(--bleu)}
.brand span{font-size:12px;color:var(--muted)}
.brand .logo{width:52px;height:52px;flex:none}
nav{display:flex;align-items:center;gap:4px}
nav a{text-decoration:none;font-weight:600;color:var(--bleu-dk);font-size:15px;padding:8px 12px;border-radius:999px}
nav a:hover{background:var(--clair)}
nav a[aria-current="page"]{background:var(--clair);color:var(--bleu)}
nav a.cta{background:var(--rouge);color:#fff;margin-left:6px}
nav a.cta:hover,nav a.cta[aria-current="page"]{background:#B00D2B;color:#fff}
.menu-btn{display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;place-items:center}
.menu-btn svg{width:24px;height:24px;stroke:var(--bleu-dk)}

/* Bandeaux de titre */
.hero{position:relative;color:#fff;padding:96px 0 88px;background:var(--bleu-dk);overflow:hidden;isolation:isolate}
.hero.page{padding:64px 0 56px}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(circle at 85% 20%,rgba(249,196,51,.22),transparent 45%),linear-gradient(110deg,var(--bleu-dk) 0%,var(--bleu) 70%)}
.hero::after{content:"";position:absolute;right:-60px;top:50%;transform:translateY(-50%);width:440px;height:440px;z-index:-1;opacity:.12;background:repeating-linear-gradient(0deg,var(--soleil) 0 22px,transparent 22px 64px);border-radius:50%}
.hero.page::after{width:300px;height:300px}
.hero.accueil::after{display:none}
.hero.accueil .wrap{display:grid;grid-template-columns:1fr 300px;gap:48px;align-items:center}
.hero-logo{width:300px;height:300px;border-radius:50%;box-shadow:0 0 0 10px rgba(255,255,255,.12),0 24px 60px rgba(0,0,0,.35)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font:700 13px/1.3 Fraunces,serif;letter-spacing:.14em;text-transform:uppercase;color:var(--soleil)}
.eyebrow::before{content:"";width:34px;height:3px;background:var(--soleil);border-radius:3px;flex:none}
h1{font:700 clamp(2.2rem,6vw,4rem)/1.05 Fraunces,serif;margin:16px 0 12px;letter-spacing:-.02em}
.hero.page h1{font-size:clamp(2rem,5vw,3.2rem)}
.hero .tag{font:700 clamp(1.05rem,2.2vw,1.4rem)/1.4 Fraunces,serif;color:var(--soleil);margin:0 0 14px;max-width:760px}
.hero p.lead{max-width:720px;color:#DCE4F5;font-size:1.08rem;margin:0 0 28px}
.hero.page p.lead{margin:0}
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;min-height:48px;padding:0 22px;border-radius:999px;font-weight:700;text-decoration:none}
.btn.y{background:var(--rouge);color:#fff}.btn.y:hover{background:#B00D2B}
.btn.o{border:2px solid rgba(255,255,255,.6);color:#fff}
.btn.o:hover{border-color:#fff}
.btn.v{background:var(--bleu);color:#fff}

.partenaire{background:#fff;border-bottom:1px solid var(--line)}
.partenaire .wrap{display:flex;align-items:center;justify-content:center;gap:16px;padding:18px 0;text-decoration:none;flex-wrap:wrap;text-align:center}
.partenaire img{width:52px;height:52px}
.partenaire strong{display:block;font:700 1.15rem/1.3 Fraunces,serif;color:var(--bleu)}
.partenaire a:hover strong{text-decoration:underline;text-decoration-color:var(--soleil);text-underline-offset:4px}

/* Sections */
section{padding:72px 0}
.clair{background:var(--clair)}
.k{font:700 13px/1 Fraunces,serif;letter-spacing:.14em;text-transform:uppercase;color:var(--rouge)}
h2{font:700 clamp(1.6rem,3vw,2.4rem)/1.15 Fraunces,serif;color:var(--bleu);margin:10px 0 14px}
.intro{max-width:780px;color:var(--muted);font-size:1.05rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-top:30px}
.card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px;box-shadow:0 14px 36px rgba(29,60,143,.08)}
.card .n{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--rouge);color:#fff;font:700 14px Fraunces,serif;margin-bottom:14px}
.card h3{font:700 1.12rem/1.3 Fraunces,serif;color:var(--bleu);margin:0 0 8px}
.card p{margin:0;color:var(--muted);font-size:.97rem}
a.card{display:block;text-decoration:none;transition:transform .2s,box-shadow .2s}
a.card:hover{transform:translateY(-4px);box-shadow:0 20px 44px rgba(29,60,143,.16)}
a.card .suite{display:inline-block;margin-top:14px;font-weight:700;color:var(--bleu)}
.pillar{border-top:4px solid var(--rouge)}
.pillar .lettre{font:700 2.4rem/1 Fraunces,serif;color:var(--bleu);opacity:.18;margin-bottom:6px}
.etude{display:grid;grid-template-columns:1.15fr 1fr;gap:36px;align-items:start;margin-top:10px}
.chiffres{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.chiffre{background:var(--bleu);color:#fff;border-radius:22px;padding:24px}
.chiffre b{display:block;font:700 clamp(2rem,4vw,2.8rem)/1 Fraunces,serif;color:var(--soleil)}
.chiffre span{display:block;margin-top:8px;color:#DCE4F5;font-size:.95rem;line-height:1.45}
.etude ul{margin:16px 0 0;padding-left:20px;color:var(--muted)}.etude li{margin-bottom:8px}
.lien{display:inline-block;margin-top:18px;font-weight:700;color:var(--bleu);text-decoration:none;border-bottom:2px solid var(--rouge)}
.lien:hover{color:var(--bleu-dk)}
.frise{list-style:none;margin:30px 0 0;padding:0;position:relative}
.frise::before{content:"";position:absolute;left:11px;top:6px;bottom:6px;width:2px;background:var(--line)}
.frise li{position:relative;padding:0 0 26px 44px}
.frise li::before{content:"";position:absolute;left:4px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--rouge);box-shadow:0 0 0 4px #fff}
.clair .frise li::before{box-shadow:0 0 0 4px var(--clair)}
.frise time{font:700 13px/1 Fraunces,serif;letter-spacing:.08em;text-transform:uppercase;color:var(--bleu)}
.frise h3{font:700 1.08rem/1.35 Fraunces,serif;color:var(--bleu-dk);margin:6px 0 4px}
.frise p{margin:0;color:var(--muted);max-width:760px}
.dir{display:grid;grid-template-columns:300px 1fr;gap:40px;align-items:start}
.dir.court{grid-template-columns:200px 1fr;align-items:center}
.dir figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:26px;overflow:hidden;box-shadow:0 18px 44px rgba(29,60,143,.12)}
.dir figure img{width:100%;aspect-ratio:4/5;object-fit:cover;object-position:top;background:#fff}
.dir figcaption{padding:16px 20px;font-weight:700;color:var(--bleu)}
.dir figcaption span{display:block;font-weight:400;color:var(--muted);font-size:.92rem}
.dir p{color:var(--muted);margin:0 0 14px}
.livres{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:22px}
.livre{border:1px solid var(--line);border-left:4px solid var(--rouge);border-radius:14px;padding:16px 18px}
.livre i{display:block;font-style:normal;font-weight:700;color:var(--bleu-dk);line-height:1.4}
.livre span{font-size:.9rem;color:var(--muted)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.panel{background:#fff;border-radius:22px;padding:30px;border:1px solid var(--line)}
.panel ul{margin:0;padding-left:20px;color:var(--muted)}.panel li{margin-bottom:8px}
.panel a{color:var(--bleu);font-weight:600}
.contact{background:var(--bleu);color:#fff;border-radius:28px;padding:40px;display:grid;grid-template-columns:1.3fr 1fr;gap:28px;align-items:center}
.contact h2{color:#fff}.contact p{color:#DCE4F5;margin:0}
.contact .k{color:var(--soleil)}
.contact ul{list-style:none;margin:0;padding:0}.contact li{margin:0 0 10px}.contact a{color:#fff;text-decoration:none}.contact a:hover{color:var(--soleil)}
.formulaire{display:grid;gap:16px;max-width:820px;margin-top:22px}
.formulaire .champs{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.formulaire label{display:grid;gap:6px;font-weight:700;color:var(--bleu-dk);font-size:.95rem}
.formulaire input,.formulaire select,.formulaire textarea{font:inherit;font-weight:400;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;width:100%;box-sizing:border-box}
.formulaire input:focus,.formulaire select:focus,.formulaire textarea:focus{outline:3px solid var(--soleil);outline-offset:1px;border-color:var(--bleu)}
.formulaire button{justify-self:start;font:inherit;font-weight:700;background:var(--rouge);color:#fff;border:0;border-radius:999px;padding:15px 28px;cursor:pointer}
.formulaire button:hover{background:#B00D2B}.formulaire button:disabled{opacity:.6;cursor:wait}
.formulaire .note{margin:0;color:var(--muted);font-size:.88rem}
.formulaire .piege{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.avis{margin:18px 0 0;padding:14px 18px;border-radius:12px;font-weight:700;max-width:820px}
.avis.ok{background:#E3F4E8;color:#14532D}.avis.erreur{background:#FDE8EC;color:#8A0F27}
.suite-bas{margin-top:28px}

footer{background:var(--bleu-dk);color:#C7D1EA;padding:30px 0;font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
footer a{color:#fff;text-decoration:none}footer a:hover{color:var(--soleil)}
footer nav{gap:0}footer nav a{color:#fff;font-weight:400;font-size:14px;padding:0 10px 0 0}footer nav a:hover{background:none}
.wa{position:fixed;right:16px;bottom:16px;width:56px;height:56px;border-radius:50%;background:#25D366;display:grid;place-items:center;box-shadow:0 8px 24px rgba(0,0,0,.25);z-index:20}
.wa svg{width:30px;height:30px;fill:#fff}
a:focus-visible,button:focus-visible{outline:3px solid var(--soleil);outline-offset:3px}

@media(max-width:900px){.etude,.dir,.dir.court{grid-template-columns:1fr}.dir figure{max-width:320px}.hero.accueil .wrap{grid-template-columns:1fr;gap:28px}.hero-logo{width:150px;height:150px;order:-1}}
@media(max-width:860px){
  .menu-btn{display:grid}
  header nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 4% 16px;box-shadow:0 18px 30px rgba(14,34,96,.12)}
  header nav.ouvert{display:flex}
  header nav a{padding:12px 14px;font-size:16px}
  header nav a.cta{margin:8px 0 0;text-align:center}
  .two,.contact,.formulaire .champs{grid-template-columns:1fr}.hero{padding:72px 0 64px}.hero.page{padding:48px 0 44px}section{padding:56px 0}.contact{padding:28px}.hero::after{display:none}
}
@media(max-width:520px){.livres,.chiffres{grid-template-columns:1fr}}