.chapitre-container{max-width:1400px;margin:0 auto;padding:2rem}.hero-elements{text-align:center;background:linear-gradient(135deg,#0f172af2,#1e293bf2);border:1px solid #ffffff14;border-radius:24px;margin-bottom:4rem;padding:4rem 2rem;box-shadow:0 10px 30px #0006}.hero-elements h1{color:#f8fafc;margin-bottom:1.5rem;font-size:clamp(2.5rem,5vw,4rem)}.hero-elements p{color:#cbd5e1;max-width:900px;margin:0 auto 1rem;font-size:1.1rem;line-height:1.8}.cards{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:2rem;display:grid}.cardLink{text-decoration:none}.card{background:linear-gradient(145deg,#0f172af2,#1e293bf2);border:1px solid #ffffff14;border-radius:20px;height:100%;padding:2rem;text-decoration:none;transition:all .25s;box-shadow:0 8px 24px #00000059}.card:hover{border-color:#ef444480;transform:translateY(-6px);box-shadow:0 15px 35px #00000073}.cardIcon{margin-bottom:1rem;font-size:2.8rem}.card h2{color:#f8fafc;margin-bottom:1rem;font-size:1.6rem}.card p{color:#cbd5e1;margin-bottom:1.5rem;line-height:1.7}.cardAction{color:#ef4444;font-weight:600}.card:hover .cardAction{color:#f87171}.chapitre-container h1{color:#f8fafc;text-align:center;margin-bottom:1rem;font-size:clamp(2rem,5vw,3.5rem)}.chapitre-resume{color:#e2e8f0;text-align:center;background:#0f172aa6;border-left:4px solid #ef4444;border-radius:10px;max-width:850px;margin:0 auto 3rem;padding:1.5rem;font-style:italic;line-height:1.8}.chapitre-section{max-width:900px;margin:0 auto 5rem}.chapitre-section h2{color:#f8fafc;border-left:4px solid #ef4444;margin-bottom:1.5rem;padding-left:1rem;font-size:2rem}.chapitre-section p{color:#e2e8f0;text-align:justify;margin-bottom:1.5rem;font-size:1.1rem;line-height:2}.chapitre-section ul{padding-left:2rem}.chapitre-section li{color:#e2e8f0;margin-bottom:.8rem;line-height:1.9}.chapitre-image{border:1px solid #ffffff14;border-radius:16px;width:100%;max-width:900px;margin:2rem auto;display:block;box-shadow:0 15px 35px #00000073}.chapitre-figure figcaption{color:#94a3b8;margin-top:1rem;font-size:.95rem;font-style:italic}.a-retenir{background:linear-gradient(135deg,#0f172ae6,#1e293be6);border-left:5px solid #ef4444;border-radius:12px;max-width:850px;margin:4rem auto;padding:2rem;box-shadow:0 10px 25px #0000004d}.a-retenir h2{color:#ef4444;margin-top:0}.a-retenir ul{margin-top:1rem;padding-left:1.5rem}.a-retenir li{color:#e2e8f0;margin-bottom:1rem;line-height:1.8}@media (max-width:768px){.hero-elements{padding:2.5rem 1.5rem}.cards{grid-template-columns:1fr}.chapitre-section h2{font-size:1.6rem}.card h2{font-size:1.4rem}}.chapitre-figure{text-align:center;max-width:900px;margin:3rem auto}.chapitre-figure figcaption{color:#94a3b8;max-width:800px;margin-top:1rem;margin-left:auto;margin-right:auto;font-size:.95rem;font-style:italic}.chapitre-image{border:1px solid #ffffff1f;border-radius:16px;width:100%;max-width:900px;margin:2rem auto;transition:transform .3s;display:block;box-shadow:0 15px 35px #00000073}.chapitre-image:hover{transform:scale(1.01)}