Input: Topic: free Mac storage using built-in tools. Promise: five checks removed 18 GB on the recorded machine, with results varying. Audience: nontechnical MacBook owners. Subject: Storage settings and Finder. Emotion: relief. Contrast: cyan on charcoal. Text limit: three words. Must show the storage bar and one cleanup action. Avoid third-party apps, fake errors, speed claims, logos as focal marks, and universal 18 GB claims. Output: TRUTH BOUNDARY: The recording shows five built-in checks and an 18 GB recovery on one Mac; it does not promise the same result for every viewer. VIEWER DECISION: Is this a practical, no-purchase cleanup walkthrough? ROUTE A — OUTCOME: Split storage bar before/after with the real end state enlarged; text ‘18 GB FOUND’; generator brief uses a clean charcoal settings screen, cyan reduction bar, and one cursor; phone check keeps only the bar and number; credibility note adds no ‘for everyone’ cue. Score 24/25. ROUTE B — TENSION: One nearly full bar pressing against a red-free-space edge, text ‘STORAGE FULL?’; no fake alert or panicked face; score 21/25 because the problem is familiar but less differentiated. ROUTE C — MECHANISM: Finder’s large-files list feeding into a simplified storage bar, text ‘5 BUILT-IN CHECKS’; metaphor is labeled as a diagram, not a literal interface; score 23/25. TEST PLAN: Compare Outcome against Mechanism with title and release timing unchanged; judge watch-time share and first-minute retention. FINAL AUDIT: no unsupported result, invented person, or third-party product; all text is within three words; both finalists read at phone size and represent the tutorial accurately.