/* --- Глобальні налаштування для цього блоку --- */
    .landing-wrapper {
        font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
        color: #333;
        line-height: 1.6;
        background-color: #f9f9f9;
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    
    .landing-wrapper * {
        box-sizing: border-box;
    }

    .landing-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    /* --- 1. Меню (Навігація) --- */
    .landing-nav {
        background-color: #ffffff;
        box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        position: sticky; /* Меню прилипає до верху */
        top: 0;
        z-index: 1000;
        padding: 15px 0;
    }

    .nav-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
    }

    .logo {
        font-size: 1.5rem;
        font-weight: bold;
        color: #2c3e50;
        text-decoration: none;
    }

    .nav-links {
        display: flex;
        gap: 20px;
    }

    .nav-links a {
        text-decoration: none;
        color: #555;
        font-weight: 500;
        transition: color 0.3s;
    }

    .nav-links a:hover {
        color: #0073e6;
    }

    /* --- 2. Hero Секція (Представлення) --- */
    .hero-section {
    /* background: linear-gradient(135deg, #2c3e50 0%, #4ca1af 100%); */
    color: #000000;
    padding: 30px 0;
    /* text-align: center; */
}

   .hero-content h1 {
    font-size: 1.6rem;
    margin-bottom: 0;
    line-height: 1.2;
}

    .hero-content p {
        font-size: 1.25rem;
        max-width: 700px;
        margin: 0;
        opacity: 0.9;
    }

   .cta-button {
    display: inline-block;
    background-color: #4CAF50;
    color: #fff;
    padding: 15px 30px;
    border-radius: 9px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.3s, transform 0.2s;
    margin: 10px 0 0 0;
}

    .cta-button:hover {
        background-color: #027e00;
        transform: translateY(-2px);
    }

    /* --- 3. Секція Сертифікатів (з минулого коду) --- */
    .certificates-section {
        padding: 0 0 50px;
    }

    .section-title {
        text-align: center;
        margin-bottom: 40px;
        font-size: 2.2rem;
        color: #2c3e50;
        position: relative;
    }
    
    .section-title::after {
        content: '';
        display: block;
        width: 60px;
        height: 3px;
        background: #f39c12;
        margin: 15px auto 0;
    }

    .certificates-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
        align-items: start;
    }

    .cert-card {
        background: #fff;
        border-radius: 12px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        overflow: hidden;
        transition: transform 0.3s ease;
        display: flex;
        flex-direction: column;
        height: 100%;
    }

    .cert-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    }

    .cert-image {
        width: 100%;
        height: auto;
        display: block;
        border-bottom: 1px solid #f0f0f0;
    }

    .cert-caption {
        padding: 20px;
        font-size: 1rem;
        color: #444;
        text-align: center;
        background-color: #fff;
        flex-grow: 1;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 500;
    }

    /* --- 4. Корисні матеріали --- */
    .materials-section {
        background-color: #eef2f5;
        padding: 60px 0;
        display: none;
    }

    .materials-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
    }

    .material-card {
        background: #fff;
        padding: 30px;
        border-radius: 8px;
        border-left: 5px solid #0073e6;
        transition: 0.3s;
    }

    .material-card:hover {
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    }

    .material-card h3 {
        margin-top: 0;
        color: #2c3e50;
    }

    .material-link {
        color: #0073e6;
        text-decoration: none;
        font-weight: bold;
        display: inline-block;
        margin-top: 10px;
    }

    .material-link:hover {
        text-decoration: underline;
    }

    /* --- 5. Футер --- */
    .landing-footer {
        background-color: #2c3e50;
        color: #bdc3c7;
        padding: 40px 0 20px;
        text-align: center;
    }

    .social-links {
        margin-bottom: 20px;
    }

    .social-links a {
        color: #fff;
        margin: 0 10px;
        text-decoration: none;
        font-size: 1.1rem;
    }

    .footer-copy {
        font-size: 0.9rem;
        border-top: 1px solid rgba(255,255,255,0.1);
        padding-top: 20px;
    }

    /* --- Адаптивність (Mobile) --- */
    @media (max-width: 768px) {
        .nav-content {
            flex-direction: column;
            gap: 15px;
        }
        
        .hero-content h1 {
            font-size: 2rem;
        }
        
        .certificates-grid, .materials-grid {
            grid-template-columns: 1fr;
        }
    }