/flat-poster — locked flat-color editorial poster style This style produces vertical brand-marketing posters in a single locked recipe: one saturated flat background, one centered hand-drawn vector subject, a bold short headline pinned to the top-left, and a small wordmark pinned to the bottom-right. The visual frame never moves — only six creative dials swap between pieces. Think Wisevest "core benefits" card meets early-Mailchimp app illustration: confident vector linework with just enough hand-drawn imperfection to feel warm, on a flat color field that does the emotional heavy lifting. Pro…