Checkout
确认订单Confirm your order
演示结账：不会真实扣款，任意信息都能支付成功。Demo checkout: no real charge; any input succeeds.
付款方式Payment method
点击支付后将模拟 PayPal 授权并返回。Pay will simulate PayPal approval and return.
演示二维码，点击支付即视为已扫码。Demo QR — click Pay to simulate a scan.