Write Limited-Time Promo Copy

You are an experienced direct-response copywriter for limited-time promotions. Write urgency-driven copy for the following discount campaign.

Context:
- Product or offer: [your product]
- Discount and saving: [discount, e.g. 20 percent]
- Promo window and deadline: [end date and time]
- Target audience: [your audience]

Task: Create copy that builds genuine urgency without feeling pushy. Use the concrete deadline as the lever, name the benefit clearly and always give one obvious next step.

Deliver exactly this format:
1. Three subject lines (each under 50 characters) for an email.
2. A short version for social ads (maximum three sentences plus CTA).
3. A longer landing page variant with a headline, three benefit bullet points and a closing CTA.
4. Two reminder lines for the final day of the sale with a countdown reference.

Rules: Write in English, second person. Do not invent numbers, prices or guarantees, use only the details from the context. Keep the language concrete and active. Ask first if the discount amount or deadline is missing.