body { font-family: 'Arial', sans-serif; line-height: 1.6; margin: 0; padding: 0; color: #333; }
        .logo { font-size: 28px; font-weight: bold; color: #FF4500; text-align: center; padding: 15px 0; }
        nav { background: #FF8C00; padding: 10px; text-align: center; }
        nav a { color: white; margin: 0 15px; text-decoration: none; }
        .mobile-nav-toggle { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav-toggle { display: block; background: #FF4500; color: white; border: none; padding: 10px; cursor: pointer; }
            .content { padding: 10px; }
        }
        .content { max-width: 1000px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #FF4500; }
        h1 { font-size: 2.2em; }
        h2 { font-size: 1.8em; }
        h3 { font-size: 1.5em; }
        .download-btn, .login-btn { background: #4CAF50; color: white; padding: 12px 25px; border: none; border-radius: 5px; margin: 15px 0; cursor: pointer; }
        .login-btn { background: #2196F3; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .tags { margin: 20px 0; }
        .tags a { background: #f0f0f0; padding: 5px 10px; margin: 0 5px; border-radius: 3px; text-decoration: none; color: #333; }
        footer { background: #333; color: white; text-align: center; padding: 20px; }