Fix join to platform section link button colors

[mhaidarhanif]

Figma: https://www.figma.com/design/gMo6kSyNTFRI4NE7ZRLMIF/%E2%9A%9B%EF%B8%8F-React-ID-Design-Draft?node-id=497-32383&t=AbmklkFDABlmd3HK-0

Fix colors to be the same. Put hover effect that is cool and unusual.

Expectation:

Current:

References:

• https://ui.aceternity.com