body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #2c3e50; text-align: center; margin-bottom: 30px; }
        h2 { color: #e74c3c; border-bottom: 2px solid #eee; padding-bottom: 5px; margin-top: 40px; }
        h3 { color: #3498db; margin-top: 25px; }
        .logo { font-size: 28px; font-weight: bold; color: #e74c3c; text-align: center; margin: 20px 0; }
        .nav { background-color: #2c3e50; color: white; padding: 10px; display: flex; justify-content: space-around; flex-wrap: wrap; }
        .nav a { color: white; text-decoration: none; padding: 5px 10px; }
        .mobile-nav-toggle { display: none; }
        .download-btn, .login-btn { display: inline-block; background-color: #27ae60; color: white; padding: 10px 20px; margin: 15px 0; text-decoration: none; border-radius: 5px; }
        .login-btn { background-color: #3498db; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .tags { margin: 20px 0; }
        .tag { background-color: #eee; padding: 3px 8px; margin: 2px; display: inline-block; border-radius: 3px; }
        .footer { margin-top: 50px; padding: 20px; background-color: #2c3e50; color: white; text-align: center; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; align-items: center; }
            .mobile-nav-toggle { display: block; background-color: #e74c3c; color: white; padding: 10px; cursor: pointer; margin-bottom: 10px; }
            .nav-links { display: none; }
            .nav-links.active { display: block; }
        }