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: #1a73e8; color: white; padding: 20px; text-align: center; }
        .logo { font-size: 2em; font-weight: bold; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
        nav { margin: 10px 0; }
        nav a { color: white; margin: 0 15px; text-decoration: none; font-weight: bold; }
        .mobile-nav-toggle { display: none; background: #0d47a1; color: white; border: none; padding: 10px; cursor: pointer; }
        h1 { color: #1a73e8; font-size: 2.5em; margin-top: 30px; }
        h2 { color: #0d47a1; font-size: 1.8em; margin-top: 25px; }
        h3 { color: #1976d2; font-size: 1.5em; margin-top: 20px; }
        .download-btn, .login-btn { display: inline-block; background-color: #4CAF50; color: white; padding: 12px 24px; margin: 15px 0; text-decoration: none; border-radius: 4px; font-weight: bold; }
        .download-btn:hover, .login-btn:hover { background-color: #45a049; }
        .image-container { text-align: center; margin: 25px 0; }
        .image-container img { max-width: 100%; height: auto; border-radius: 8px; }
        footer { background-color: #1a73e8; color: white; text-align: center; padding: 20px; margin-top: 30px; }
        .tag-container { margin: 20px 0; }
        .tag { background-color: #e0e0e0; color: #333; padding: 5px 10px; margin: 5px; border-radius: 20px; display: inline-block; text-decoration: none; }
        @media (max-width: 768px) {
            .mobile-nav-toggle { display: block; }
            nav { display: none; }
            nav.active { display: block; }
            nav a { display: block; margin: 10px 0; }
            h1 { font-size: 2em; }
            h2 { font-size: 1.6em; }
        }