Control DeepSeek-R1 Answer Verbosity After Thinking

While R1's internal <think> chain should not be artificially budget-capped in the prompt, explicitly specify the desired length and structure of the final post-</think> copy.

User Prompt: Analyze the competitive differentiation of our zero-trust browser isolation platform from the positioning notes below: {{NOTES}}. After your </think> block, output exactly 5 punchy enterprise ad headlines of 10 words or fewer.