homepage Improve spacing

Improve spacing in the “How we work” section — the layout feels too dense. Adding more whitespace between the title, steps, and bottom paragraph would improve readability and visual comfort.

<img width="1632" height="698" alt="Image" src="https://github.com/user-attachments/assets/1c624758-249e-489e-904f-f8093f8b7638" />