Missing viewport meta tag
What this means
The page declares no viewport meta tag, so mobile browsers fall back to a desktop-width layout — and Google indexes the mobile rendering.
How to fix it
Add <meta name="viewport" content="width=device-width, initial-scale=1"> to the head.
Fix effort
This check needs review: the change can be drafted for you, but a person has to approve the wording or choose the target before it ships.
Authoritative source
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