body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #e74c3c; text-align: center; }
        h2 { color: #2980b9; border-bottom: 2px solid #f39c12; padding-bottom: 5px; }
        h3 { color: #27ae60; }
        .logo { font-size: 2em; font-weight: bold; text-align: center; margin: 20px 0; color: #e74c3c; }
        nav { background-color: #f1c40f; padding: 10px; text-align: center; position: sticky; top: 0; }
        nav a { margin: 0 15px; color: #2c3e50; text-decoration: none; font-weight: bold; }
        .mobile-menu { display: none; background: #f39c12; color: white; padding: 10px; text-align: center; cursor: pointer; }
        .content { margin-top: 20px; }
        .download-btn, .login-btn { display: inline-block; background: #2ecc71; color: white; padding: 10px 20px; margin: 10px 0; text-decoration: none; border-radius: 5px; }
        .login-btn { background: #3498db; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .footer { margin-top: 50px; padding: 20px; background: #34495e; color: white; text-align: center; }
        .tags { margin: 20px 0; }
        .tag { background: #95a5a6; color: white; padding: 5px 10px; margin: 5px; display: inline-block; border-radius: 3px; }
        @media (max-width: 768px) {
            nav { display: none; }
            .mobile-menu { display: block; }
            .show-nav { display: block; }
        }