Changes:
- Added a new landing page: /capex-savings
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## Summary by CodeRabbit
* **New Features**
* Added a CapEx savings page available at `/capex-savings`.
* Added guidance on device refresh cycles, hardware performance, and
recommended replacement timing.
* Added a savings calculator for device cost, refresh cycle, and fleet
size, with estimated annual savings and assumptions.
* Added responsive layouts, imagery, calls to action, and
mobile-friendly calculator controls.
* Added supporting content on refresh recommendations, Fleet hardware
performance, and device lifecycle planning.
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Eric
ccfcc65fc5