body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 2.5em; font-weight: bold; color: #FF9800; text-align: center; margin: 20px 0; }
        .nav { display: flex; justify-content: center; background: #333; padding: 10px; }
        .nav a { color: white; margin: 0 15px; text-decoration: none; }
        .mobile-nav-toggle { display: none; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; align-items: center; }
            .mobile-nav-toggle { display: block; position: absolute; top: 10px; right: 10px; }
        }
        .download-btn { background: #4CAF50; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 15px 0; }
        .login-btn { background: #2196F3; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 15px 10px; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .tags { margin: 20px 0; }
        .tag { background: #eee; padding: 5px 10px; border-radius: 3px; margin: 5px; display: inline-block; }
        .footer { text-align: center; margin-top: 40px; padding: 20px; background: #f5f5f5; }