body { font-family: 'Arial', sans-serif; line-height: 1.6; margin: 0; padding: 0; color: #333; background-color: #f9f9f9; }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { background-color: #ff6b35; color: white; padding: 15px; text-align: center; }
        header h1 { margin: 0; font-size: 2.2em; }
        nav { display: flex; justify-content: space-around; background-color: #e74c3c; padding: 10px; }
        nav a { color: white; text-decoration: none; font-weight: bold; }
        .mobile-nav-btn { display: none; background-color: #e74c3c; color: white; border: none; padding: 10px; }
        .content { padding: 20px; }
        h2, h3 { color: #e74c3c; }
        .download-btn, .login-btn { display: inline-block; padding: 10px 20px; margin: 10px 0; background-color: #ff6b35; color: white; text-decoration: none; border-radius: 5px; }
        .img-container { text-align: center; margin: 20px 0; }
        img { max-width: 100%; height: auto; }
        footer { background-color: #333; color: white; text-align: center; padding: 20px; }
        .tag-container { margin: 20px 0; }
        .tag { background-color: #ff6b35; color: white; padding: 5px 10px; margin: 5px; display: inline-block; border-radius: 3px; }
        @media (max-width: 768px) {
            nav { flex-direction: column; display: none; }
            .mobile-nav-btn { display: block; }
            .nav-active { display: flex; }
        }