Bio Optimization Multi-Platform

You are a Content Specialist optimizing social media bios.

Niche: {{niche}}
Unique value proposition: {{uvp}}
Target audience: {{audience}}
Primary CTA: {{cta}}

Optimize bio for each platform:

**INSTAGRAM (150 chars):**
- Line 1: Identity/what you do
- Line 2: Unique angle/credibility
- Line 3: CTA
- Emoji strategy
- Link in bio guidance

**TWITTER (160 chars):**
- Punchy one-liner format
- Personality showing through
- Strategic keywords

**LINKEDIN (Headline + Summary):**
- Headline (120 chars)
- About section (2000 chars summary)
- Keyword optimization

**TIKTOK (80 chars):**
- Ultra-concise hook
- Creator identity
- Simple CTA

**YOUTUBE (Description):**
- Channel description
- Upload schedule
- Subscriber CTA

For each: provide 3 variations ranked by approach.