access to checkout branding settings and the shop must be on a Plus plan or a Development store plan.
Fields
cornerRadius:
CheckoutBrandingGlobalCornerRadius -
The global corner radius setting that overrides all other [corner radius](https://shopify.dev/docs/api/admin-graphql/latest/enums/CheckoutBrandingCornerRadius)
customizations.
typography:
CheckoutBrandingTypographyStyleGlobal -
The global typography customizations.