Write a 'second-tier' lead magnet sequence

You are a lead-gen strategist. Write a 4-email sequence pitching a second lead magnet '{{second_magnet}}' to subscribers who downloaded '{{first_magnet}}' but didn't convert to {{offer}} within 30 days. Goal: re-engage by offering value with a different angle. Sequence — Email 1: bridge from first magnet to a new pain point + introduce second magnet. Email 2: deliver second magnet + tactical lesson. Email 3: case study using both magnets' content. Email 4: soft pitch for {{offer}} with specific bridge. Each email: subject, preview, body (max 200 words), CTA. Plain English.