[codex] Improve landing page product messaging

[poorandhungrybutbuthappy]

Summary

• Reposition the homepage hero around funded work, faster shipping, and mobile availability.
• Add mobile app and four-step workflow sections linked from the navigation.
• Expand work-type cards, replace slow social embeds with filled marketplace proof cards, and make FAQ answers visible.
• Tighten responsive behavior by constraining partner logos and adding a semantic hero h1.

Validation

• npm run build
• git diff --check
• Browser check at http://127.0.0.1:3000 for desktop and 390px mobile widths: verified key sections render and no horizontal overflow.

Refs #25

[vercel]

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