GstarCAD interface has been reconstructed using the WPF framework and our own technologies to deliver both visual polish and technical power: Visual Refresh: Redesigned color schemes and proportions, with 1500+ icons redrawn in SVG for clear and smooth display at any scale. Refined theme colors and display effects create a sleek, modern look. Technical Upgrade: Built on a new WPF architecture with optimized secondary development interfaces and faster data handling. Full compatibility with ACAD libraries ensures zero-cost migration for existing .NET-based workflows. Usability Optimization: Recent Documents now display icons and names, with support for up to 50 entries. Subpanels can be pinned, ribbon tabs and panels can be quickly customized via right-click, and the text editor is now embedded in the ribbon to save screen space, along with other thoughtful UI improvements.