Radial Pressure and Rotation-Based Gravitational Model Incorporating Dark Matter Effects

itle: Radial Pressure and Rotation-Based Gravitational Model Incorporating Dark Matter Effects This work introduces a novel gravitational model based on radial pressure, density stratification, rotational frame-dragging, and the influence of dark matter. Developed by Mohamadreza Eskandari Nasab Siahkohi with theoretical and editorial support from the ChatGPT assistant (OpenAI), the article provides a layered, semi-relativistic approach to gravity modeling. The ChatGPT assistant contributed as a collaborative writing tool, helping structure and polish the manuscript based on the author's original ideas and data. All calculations, figures, and models were prepared and verified by the author. Status: This preprint is currently under review and has not been peer-reviewed yet. Copyright: The author, Mohamadreza Eskandari Nasab Siahkohi, holds all intellectual property rights. No part of this work may be copied, reused, or redistributed without permission and proper citation. Disclaimer: This publication is released for scientific evaluation and public feedback. Any misuse or unauthorized use will be considered an infringement of copyright.