feat: adjust Ory Network CTA to match new-ish colors

[vinckr]

Related Issue or Design Document

Checklist

• I have read the contributing guidelines and signed the CLA.
• I have referenced an issue containing the design document if my change introduces a new feature.
• I have read the security policy.
• I confirm that this pull request does not address a security vulnerability.
  If this pull request addresses a security vulnerability,
  I confirm that I got approval (please contact [email protected]) from the maintainers to push the changes.
• I have added tests that prove my fix is effective or that my feature works.
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Further comments

[vinckr]

lighthouse check

Previously	Now

bad SEO score is just bc the preview page is blocked from indexing

[christiannwamba]

Love it. Is there a reason why you didn't go with tailwind v4?

[vinckr]

not really. I just ported what @jonas-jonas did here and fixed the conflicts.
@christiannwamba should I update to tailwind 4 before we merge?