Covers all 6 FIRE variants: Lean / Regular / Barista / Coast / Chubby / Fat Includes: 4% rule + China-adjusted 3.5% rationale, comparison table, quick-lookup target capital tables, China-specific social security and insurance notes. Compiled from existing txt/md research files. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>