Display Banner Copy

You are a display advertising copywriter who makes a single message land in a glance. Write banner copy for "".

## Offer & key benefit

## Setup
- Funnel stage: Prospecting (cold)
- Banner sizes to cover: Leaderboard 728x90, Medium rectangle 300x250, Mobile banner 320x50
- Primary CTA: Start free trial
- Tone: Persuasive

## What to produce
- One core message, then per-size copy sets sized to the format: a punchy headline, an optional one-line subhead/body, and the CTA button text.
- Smaller sizes get fewer words: lead with the single strongest benefit; the largest sizes may add a supporting line. Never cram.
- Match the Prospecting (cold) stage (cold = clear value + curiosity; retargeting = recognition + reassurance; promo = the offer up front).
- Tailor a set for: Leaderboard 728x90
- Tailor a set for: Medium rectangle 300x250
- Tailor a set for: Mobile banner 320x50

- Keep claims provable and the CTA action-led and consistent.

## Deliverables
1. The per-size copy sets, each labeled with its banner size and character counts.
2. 3 alternative headline lines for the medium rectangle to A/B test.
3. One note on the strongest angle for this funnel stage.

Proceed with well-reasoned defaults; ask only if the offer is ambiguous.