This simulates a third-party website using the Fuspay checkout script — like Flutterwave. Click Pay to load the modal.
Integration snippet
<script src="https://your-domain.com/fuspay-checkout.js"></script>
<button onclick="FuspayCheckout.open({
amount: 13000.23,
currency: 'NGN',
merchantName: 'Your Business',
reference: 'order_123',
onSuccess: (r) => console.log(r)
})">Pay</button>