I would not trust the browser-calculated amount as the authoritative
value, even if the calculator UX is solid. The safer pattern is to send
the dimensions to your backend, recalculate or validate the quote
server-side, store it against a short-lived...
I would be careful with passing the transient token through the URL
during the redirect to the external survey platform. Even if it is not
raw card data, putting payment-related tokens in query parameters can
still create unnecessary PCI audit concer...
To enhance your website's styling, try using a CSS framework like
Bootstrap for a responsive design. Focus on clean layouts, smooth
animations, and readable typography. Make sure to test for mobile
compatibility. As you can see here
