improvement(landing): optimize core web vitals and accessibility #4193

Bugbot Review

Bugbot Analysis Progress (6m 36s elapsed)

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✅ Completed bug detection (6m 29s)
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Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_e1275b10-2fba-45f2-b34e-802914d0ac14

✅ Bugbot reviewed your changes and found no new issues!

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^{Reviewed by Cursor Bugbot for commit 9bc82bf. Configure here.}