body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #f5f5f5; }
        header { background-color: #ff4d4d; color: white; padding: 15px; text-align: center; font-size: 24px; font-weight: bold; border-radius: 5px; margin-bottom: 30px; }
        nav { display: flex; justify-content: space-between; align-items: center; background-color: #333; padding: 10px; border-radius: 5px; }
        nav a { color: white; text-decoration: none; margin: 0 10px; }
        .mobile-nav-toggle { display: none; background: none; border: none; color: white; font-size: 20px; cursor: pointer; }
        h1 { font-size: 28px; color: #ff4d4d; margin-bottom: 20px; }
        h2 { font-size: 22px; color: #333; margin-top: 30px; margin-bottom: 15px; }
        h3 { font-size: 18px; color: #555; margin-top: 25px; margin-bottom: 10px; }
        .btn { display: inline-block; background-color: #ff4d4d; color: white; padding: 10px 20px; text-decoration: none; border-radius: 5px; margin: 10px 0; }
        .download-section, .login-section { text-align: center; margin: 30px 0; }
        .image-container { text-align: center; margin: 20px 0; }
        img { max-width: 100%; height: auto; border-radius: 5px; }
        footer { background-color: #333; color: white; text-align: center; padding: 20px; margin-top: 30px; border-radius: 5px; }
        @media (max-width: 768px) {
            .mobile-nav-toggle { display: block; }
            nav .desktop-nav { display: none; }
            nav.active .desktop-nav { display: flex; flex-direction: column; width: 100%; }
            nav.active .desktop-nav a { margin: 5px 0; }
        }