Three answers, one first screen
Ask a cold visitor what kind of thing this is, who it appears to be for, and what becomes better after using it. Those are the category, audience, and outcome signals.
The exact words do not need to appear as a formula. But if the visitor cannot recover all three ideas, the page is asking later sections to repair the first impression.
Diagnose the missing signal
Missing category produces basic confusion: “Is this software, a service, or a community?” Missing audience produces indifference: “It sounds useful, but perhaps not for me.” Missing outcome produces weak motivation: “I understand what it is, but not why I should change.”
Different failures require different rewrites. A more energetic headline will not repair an absent category. Another feature will not repair an invisible audience.
Test recall, not recognition
Remove the page before asking the questions. Recognition lets people repeat language still visible on screen; recall shows which meaning actually survived.
The score matters less than the pattern. A consistent wrong answer tells you exactly where the message architecture is leaking.