body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF4500; text-align: center; }
        h2 { color: #008000; border-bottom: 2px solid #FFD700; padding-bottom: 5px; }
        h3 { color: #1E90FF; }
        .logo { font-size: 2.5em; font-weight: bold; text-align: center; margin: 20px 0; color: #FF4500; }
        .nav { background-color: #FFD700; padding: 10px; display: flex; justify-content: space-around; position: sticky; top: 0; }
        .mobile-nav-toggle { display: none; }
        .download-btn, .login-btn { display: inline-block; padding: 10px 20px; margin: 10px 0; background-color: #008000; color: white; text-decoration: none; border-radius: 5px; }
        .login-btn { background-color: #1E90FF; }
        img { max-width: 100%; height: auto; margin: 15px 0; }
        .gallery { display: flex; flex-wrap: wrap; gap: 10px; }
        .gallery img { width: 30%; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .mobile-nav-toggle { display: block; text-align: center; background-color: #FF4500; color: white; padding: 10px; }
            .nav-links { display: none; }
            .nav-links.active { display: block; }
            .gallery img { width: 100%; }
        }