body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 2rem; font-weight: bold; color: #FF5722; text-align: center; margin: 20px 0; }
        nav { background: #333; padding: 10px; display: flex; justify-content: space-around; }
        nav a { color: white; text-decoration: none; }
        .mobile-menu-btn { display: none; }
        h1 { color: #FF5722; text-align: center; }
        h2 { color: #4CAF50; border-bottom: 2px solid #4CAF50; padding-bottom: 5px; }
        h3 { color: #2196F3; }
        .download-btn, .login-btn { 
            display: inline-block; padding: 10px 20px; margin: 10px 0; 
            background: #4CAF50; color: white; text-decoration: none; 
            border-radius: 5px; text-align: center;
        }
        .login-btn { background: #2196F3; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .tags { margin: 20px 0; }
        .tag { display: inline-block; padding: 5px 10px; background: #eee; margin: 5px; border-radius: 3px; }
        footer { margin-top: 30px; padding: 20px; background: #333; color: white; text-align: center; }
        @media (max-width: 768px) {
            nav { flex-direction: column; display: none; }
            .mobile-menu-btn { display: block; background: #4CAF50; color: white; padding: 10px; text-align: center; cursor: pointer; }
            .nav-active { display: flex; }
        }