plain book 3d model

A clean 3D model of a standard Chinese high school workbook, single closed book, accurate rectangular proportions, flat front cover, flat back cover, straight spine, slightly rounded paper block corners, no printed text, no embossed details, no logo, no patterns, no damage, no wear, no stacked books, no accessories, clean quad-friendly topology, clear hard surface edges, evenly distributed geometry, UV-friendly surfaces, separate readable front cover, back cover, and spine areas for texture replacement, realistic book thickness, production-ready, game-ready, neutral material, plain matte paper cover, studio lighting, centered object, isolated asset