.back-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 12px 24px;
            background: var(--gradient-primary);
            color: white;
            border-radius: 25px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
        }

        .back-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }

        /* Hero Section */
        .hero {
            background: var(--gradient-primary);
            color: white;
            padding: 10rem 2rem 6rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            margin-bottom: 1.5rem;
            font-weight: 800;
            animation: slideInDown 0.8s ease-out;
        }

        .brand-name {
            background: linear-gradient(45deg, #ffd700, #ffed4e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-family: "Cabin Sketch", sans-serif;
            text-shadow: 0 0 30px rgba(255, 215, 0, 0.5);
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
            animation: fadeInUp 0.8s ease-out 0.2s both;
        }

        /* Main Content */
        .main-content {
            padding: 4rem 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .section {
            margin-bottom: 4rem;
            animation: fadeInUp 0.6s ease-out both;
        }

        .section:nth-child(2) { animation-delay: 0.1s; }
        .section:nth-child(3) { animation-delay: 0.2s; }
        .section:nth-child(4) { animation-delay: 0.3s; }

        .section h2 {
            font-size: 2.5rem;
            margin-bottom: 2rem;
            color: var(--primary-color);
            position: relative;
            padding-bottom: 1rem;
        }

        .section h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--gradient-primary);
            border-radius: 2px;
        }

        .section p {
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
            line-height: 1.8;
        }

        /* Objectifs Grid */
        .objectives-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }

        .objective-card {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
            border-top: 4px solid var(--primary-color);
        }

        .objective-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }

        .objective-card h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }

        /* Thématiques */
        .themes-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }

        .theme-card {
            background: linear-gradient(135deg, #f8f9ff 0%, #e8f2ff 100%);
            padding: 2rem;
            border-radius: 20px;
            transition: var(--transition);
            border-left: 5px solid;
        }

        .theme-card:nth-child(1) { border-left-color: var(--secondary-color); }
        .theme-card:nth-child(2) { border-left-color: var(--accent-color); }
        .theme-card:nth-child(3) { border-left-color: var(--violet-color); }
        .theme-card:nth-child(4) { border-left-color: var(--primary-color); }

        .theme-card:hover {
            transform: scale(1.02);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .theme-card h3 {
            margin-bottom: 1rem;
            font-size: 1.4rem;
        }

        .theme-card .questions {
            font-style: italic;
            color: #555;
        }

        /* Méthodologie Steps */
        .methodology-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }

        .step {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            text-align: center;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            position: relative;
        }

        .step::before {
            content: attr(data-step);
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--gradient-primary);
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.2rem;
        }

        .step:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }

        .step h3 {
            margin: 1rem 0;
            color: var(--primary-color);
        }

        /* Impact Cards */
        .impact-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }

        .impact-card {
            background: var(--gradient-primary);
            color: white;
            padding: 2.5rem;
            border-radius: 20px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .impact-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="25" cy="25" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="25" r="1" fill="rgba(255,255,255,0.1)"/></svg>');
            opacity: 0.3;
        }

        .impact-card:hover {
            transform: scale(1.05);
        }

        .impact-card h3 {
            margin-bottom: 1rem;
            font-size: 1.5rem;
            position: relative;
            z-index: 2;
        }

        .impact-card p {
            position: relative;
            z-index: 2;
        }

        /* Call to Action */
        .cta-section {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 4rem 2rem;
            text-align: center;
            margin: 4rem 0;
            border-radius: 20px;
        }

        .cta-section h2 {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            color: var(--dark-color);
        }

        .cta-btn {
            display: inline-block;
            padding: 18px 40px;
            background: var(--gradient-primary);
            color: white;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.2rem;
            margin-top: 1rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .cta-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            transition: var(--transition);
        }

        .cta-btn:hover::before {
            left: 100%;
        }

        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
        }

        /* Animations */
        @keyframes slideInDown {
            from {
                opacity: 0;
                transform: translateY(-30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Responsive */
        @media (max-width: 768px) {
            .hero {
                padding: 8rem 1rem 4rem;
            }

            .main-content {
                padding: 2rem 1rem;
            }

            .section h2 {
                font-size: 2rem;
            }

            .objectives-grid,
            .themes-container,
            .methodology-steps,
            .impact-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }