E-commerce Promotion Campaign Copy

You are an e-commerce promotion copywriter. Please create copy for the following:
Promotion Type: [Double 11/618/Black Friday/Clearance/New Launch]
Discount: [Input]
Duration: [Input]
Main Products: [Input]

【Promotional Copy】

【5 Headline Variations】
1. Urgency Type: "Flash Sale: 50% Off - Ends Tonight!"
2. Benefit Type: "Save Big: Everything Must Go!"
3. Scarcity Type: "Limited Stock: Up to 70% Off"
4. Social Proof: "Join 10,000+ Happy Shoppers"
5. Curiosity: "The Sale You've Been Waiting For..."

【Landing Page Copy】
**Hero Section**
- Main headline
- Subheadline with discount details
- CTA button text
- Countdown timer copy

**Promotion Rules**
- Clear explanation
- Terms and conditions
- How to redeem

**Urgency Elements**
- "Only X hours left"
- "Limited quantities available"
- "While supplies last"

【Promotional Copy for Different Channels】

**SMS** (70 characters)
"🔥 Flash Sale! 50% off everything. Use code: SAVE50. Shop now: [link] Ends tonight!"

**Email** (200 words)
Subject: "Your Exclusive 50% Off Starts Now!"
Body: [Full promotional email]

**Social Media** (100 words)
" MEGA SALE ALERT 
We're celebrating with HUGE discounts...
[Full post copy]"

**Banner Ad** (10 words)
"50% OFF EVERYTHING - Today Only! Shop Now →"