Develop "University account not found" page

As a user who fails to authenticate university account details,  
I would like to be shown a clear error page 
that explains the reasons my details were not found 
and provides steps to resolve the issue,  
so that I can re-enter my details correctly or follow instructions to check my account status.

Background:

This page is shown after a user inputs their account details, which were not successfully matched to a record. The page must guide the user to correct or check their details, re-enter them, or seek further assistance. It should include functional links and navigation buttons for re-entering details or going back to the previous screen.

Acceptance Criteria:

• The page matches the provided styling and follows responsive design across all size ranges (small, medium, large)
• Text includes the title "University account not found" and the following sections:
  • Main content:
    • "We could not find a University account matching the details you entered."
    • "We cannot give you access to your University IT account unless we can match the correct details."
  • Subheader: Why could my details not be found?
    • "This could be because":
      • "you entered one or more of your account (which link?) details incorrectly. For example CRSid, last name, date of birth, or admissions number (which link?)."
      • "your University IT account is not yet available."
  • Subheader: Next steps
    • "To fix this problem", includes the following steps:
      • "re-enter your account details, making sure to avoid any mistakes."
      • "if you are a member of staff, ask your line manager, local HR, or IT team (which link?) if your University IT account is available."
      • "if you are a student, sign into your Student Registration Portal to check whether your University IT account is available."
  • Subheader: Need help using this service
    • Includes the contact information: "Contact user-admin@uis.cam.ac.uk if you are still having problems."
    • Links for "Student Registration Portal" and "local HR or IT team" must open in new tabs.
    • The email link mailto:user-admin@uis.cam.ac.uk should also be functional.
• The buttons "Previous" and "Re-enter your account details" are implemented using the NavigationButtons component, with proper functionality for navigating to the respective pages.
  • Double-check that: "Previous" and "Re-enter your account details" should delete saved info
• The page is part of the Stepper component, allowing users to navigate smoothly through the step sequence.
• All links are referenced from the constants file: consts.ts.
• Separate Cypress E2E tests are written to cover this page and validate:
  • Page loads correctly after failed user authentication.
  • All buttons, links, and text are functional.
  • The accessibility checks are disabled for ["heading-order", "page-has-heading-one"]
• If user is unauthenticated then this page is navigated to.