* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Segoe UI', Roboto, sans-serif;
        line-height: 1.6;
        color: #1e293b;
        background: linear-gradient(135deg, #e8eef7 0%, #dee9f5 100%);
        min-height: 100vh;
        padding: 1rem;
    }

    .container {
        max-width: 1300px;
        margin: 0 auto;
        background: rgba(255, 255, 255, 0.8);
        backdrop-filter: blur(10px);
        border-radius: 2.5rem;
        box-shadow: 0 25px 50px -12px rgba(0, 30, 60, 0.25);
        padding: 2rem;
        border: 1px solid rgba(255, 255, 255, 0.7);
    }

    .nav {
        display: flex;
        justify-content: center;
        gap: 1rem;
        margin-bottom: 2.5rem;
        flex-wrap: wrap;
    }

    .nav a {
        padding: 0.8rem 2rem;
        border-radius: 50px;
        text-decoration: none;
        font-weight: 600;
        transition: all 0.2s;
        background: white;
        color: #0f2b4a;
        border: 2px solid transparent;
    }

    .nav a:hover {
        border-color: #2563eb;
        background: #f5f9ff;
    }

    .nav a.actif {
        background: #2563eb;
        color: white;
    }

    .header {
        text-align: center;
        margin-bottom: 3rem;
    }

    .header h1 {
        font-size: 2.8rem;
        font-weight: 700;
        background: linear-gradient(135deg, #0b2b4f, #2563eb);
        background-clip: text;
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        margin-bottom: 0.5rem;
    }

    .sous-titre {
        font-size: 1.2rem;
        color: #2c3e5c;
        background: rgba(255,255,255,0.6);
        display: inline-block;
        padding: 0.5rem 2rem;
        border-radius: 60px;
        margin-top: 0.5rem;
    }

    .badge-ia {
        display: inline-block;
        background: #7e57c2;
        color: white;
        padding: 0.3rem 1.5rem;
        border-radius: 40px;
        font-weight: 600;
        margin: 1rem 0;
    }

    /* Grille des formules sites */
    .grille-sites {
        display: flex;
        flex-wrap: wrap;
        gap: 2rem;
        justify-content: center;
        margin: 3rem 0;
    }

    .carte-site {
        flex: 1 1 280px;
        max-width: 340px;
        background: white;
        border-radius: 2rem;
        overflow: hidden;
        box-shadow: 0 20px 35px -8px rgba(37, 99, 235, 0.15);
        transition: all 0.2s;
        border: 1px solid #ffffff;
    }

    .carte-site:hover {
        transform: translateY(-8px);
        box-shadow: 0 30px 45px -8px #2563eb70;
    }

    .carte-site.recommandee {
        border: 2px solid #2563eb;
        transform: scale(1.02);
    }

    .entete-site {
        background: linear-gradient(165deg, #f0f7ff, #ffffff);
        padding: 2rem 1.5rem;
        text-align: center;
        border-bottom: 2px solid #e2eaf6;
    }

    .entete-site h2 {
        font-size: 2rem;
        color: #0b2b4f;
        margin-bottom: 0.5rem;
    }

    .prix-site {
        font-size: 2.8rem;
        font-weight: 800;
        color: #1e3c72;
        line-height: 1.2;
    }

    .prix-site small {
        font-size: 1rem;
        font-weight: 400;
        color: #64748b;
    }

    .details-site {
        padding: 2rem 1.5rem;
    }

    .details-site ul {
        list-style: none;
        margin-bottom: 2rem;
    }

    .details-site li {
        padding: 0.5rem 0;
        border-bottom: 1px solid #edf2f7;
        display: flex;
        align-items: center;
        gap: 0.6rem;
    }

    .details-site li:before {
        content: "✨";
        margin-right: 0.5rem;
    }

    .btn-site {
        display: block;
        text-align: center;
        background: linear-gradient(145deg, #2563eb, #1d4ed8);
        color: white;
        text-decoration: none;
        padding: 0.9rem;
        border-radius: 60px;
        font-weight: 600;
        transition: 0.15s;
    }

    .btn-site:hover {
        background: #1e40af;
    }

    /* Bloc maintenance */
    .maintenance {
        background: linear-gradient(135deg, #e6f0ff, #d4e2fc);
        border-radius: 2rem;
        padding: 2rem;
        margin: 2.5rem 0;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-around;
        gap: 2rem;
    }

    .maintenance-text {
        flex: 2 1 300px;
    }

    .maintenance-text h3 {
        font-size: 2rem;
        color: #0b2b4f;
        margin-bottom: 1rem;
    }

    .maintenance-prix {
        flex: 1 1 200px;
        text-align: center;
        background: white;
        padding: 1.5rem;
        border-radius: 1.5rem;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    }

    .maintenance-prix .chiffre {
        font-size: 2.5rem;
        font-weight: 800;
        color: #1e3c72;
    }

    /* Forfaits complémentaires */
    .complement {
        display: flex;
        flex-wrap: wrap;
        gap: 1.5rem;
        margin: 2.5rem 0;
    }

    .complement-card {
        flex: 1 1 250px;
        background: white;
        padding: 1.8rem;
        border-radius: 1.8rem;
        border-left: 6px solid #2563eb;
    }

    .mentions {
        text-align: center;
        font-size: 0.9rem;
        color: #4b5870;
        margin-top: 2rem;
        padding-top: 2rem;
        border-top: 2px dotted #a0b8d4;
    }