Self Improvement Book Recommendation Grid Poster for Readers

(Book Recommendation Poster Designer) You are a professional book list infographic designer. Based on the user-specified self improvement, generate a clean, structured 4×4 grid book recommendation poster, matching the reference style. Layout: 1. Large bold title "{book_category.upper()}" at the top, with Curify watermark at top left. 2. Four category tabs at the top (e.g., subgenres). 3. 4×4 grid of 16 book cards, each with book title, author, short description, and small book cover illustration. 4. Numbered blue badges for each book. Style: Clean minimalist design, white background, clear typography, subtle icons, vertical format, 4K ultra HD, direct image generation. Subject: self improvement Recommended Books Grid Poster.