/* Variables de couleurs */
        :root {
            --white: #ffffff;
            --blue-dark: #0b3d91;
            --green-forest: #2e5d35;
        }

        body {
            font-family: 'Roboto', sans-serif;
            background-color: var(--white);
            color: var(--blue-dark);
            line-height: 1.6;
            scroll-behavior: smooth;
        }

        h1, h2, h3, h4 {
            font-weight: 700;
            color: var(--green-forest);
        }

        /* Sections */
        section {
            padding: 60px 15px;
            max-width: 1140px;
            margin: auto;
        }

        /* Titres */
        .section-title {
            text-align: center;
            margin-bottom: 50px;
            position: relative;
        }
        .section-title::after {
            content: '';
            width: 60px;
            height: 3px;
            background: var(--blue-dark);
            display: block;
            margin: 15px auto 0 auto;
            border-radius: 2px;
        }

        /* Card design for activities */
        .activity-card {
            border: none;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(46, 93, 53, 0.2);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            background-color: var(--white);
        }

        .activity-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 8px 30px rgba(46, 93, 53, 0.35);
        }

        .activity-card img {
            border-top-left-radius: 12px;
            border-top-right-radius: 12px;
            height: 200px;
            object-fit: cover;
        }

        /* Buttons style */
        .btn-primary {
            background-color: var(--green-forest);
            border: none;
            font-weight: 600;
            transition: background-color 0.3s ease;
        }

        .btn-primary:hover {
            background-color: var(--blue-dark);
        }

        /* Background sections alternés */
        .bg-light-green {
            background-color: #e6f2e6;
        }

        /* Responsive typography */
        @media (max-width: 768px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
        }