body { font-family: Arial, sans-serif; line-height: 1.6; color: #333; margin: 0; padding: 0; background-color: #f5f5f5; }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { background-color: #FF5733; color: white; padding: 15px 0; text-align: center; position: relative; }
        header h1 { margin: 0; font-size: 2.5em; }
        nav { background-color: #E74C3C; overflow: hidden; }
        nav a { color: white; text-decoration: none; padding: 14px 16px; display: block; float: left; }
        nav a:hover { background-color: #C0392B; }
        .mobile-nav-toggle { display: none; cursor: pointer; padding: 14px 16px; float: right; }
        h1, h2, h3 { color: #2C3E50; }
        h1 { font-size: 2em; margin-bottom: 20px; }
        h2 { font-size: 1.5em; margin-top: 30px; }
        h3 { font-size: 1.2em; margin-top: 25px; }
        p { margin-bottom: 15px; }
        .download-btn, .login-btn { display: inline-block; background-color: #3498DB; color: white; padding: 10px 20px; text-decoration: none; border-radius: 5px; margin: 10px 0; }
        .download-btn:hover, .login-btn:hover { background-color: #2980B9; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        .tags { margin: 20px 0; }
        .tag { display: inline-block; background-color: #ECF0F1; color: #7F8C8D; padding: 5px 10px; border-radius: 15px; margin-right: 5px; text-decoration: none; }
        footer { background-color: #34495E; color: white; text-align: center; padding: 20px 0; margin-top: 30px; }
        @media screen and (max-width: 768px) {
            nav a { float: none; display: none; }
            .mobile-nav-toggle { display: block; }
            nav.active a { display: block; }
            .container { padding: 10px; }
        }