`
- Inner: `.wrapper.wrapper--inner` > `h2.section-heading.heading--md`
- Steps container: `.collaboration-steps` with max-width 900px, margin auto, padding 20px 0
- Each step: `.collaboration-step` with flex layout, gap 20px, margin-bottom 40px (except last)
- Step number: `.step-number` — circular green gradient (#88b14b → #6a8f3a), 60x60, white text
- Connector line: `.step-connector` — 2px wide, gradient green to gray, between steps (not after last)
- Step content: `.step-content` — gray bg (#f8f9fa), 4px green left border, rounded
- Bottom text: `.col-text-content.mt-4.text-center` > ``
Move inline styles to classes where possible, but keep them if removing would break existing CSS dependencies.
Include the existing hover/responsive CSS from page-2707.php as a