layout and catalog‌

[qianxuncsu]

There's an issue: as a knowledge base, the content is extremely large and organized into many categories—major, minor, etc. But the current layout resembles a single book, with all headings in one column, making it very inconvenient to quickly navigate to a specific subcategory (e.g., with over 8,000 entries). The heading column should be split into several smaller vertical columns, so you can click to select the main category (level-1 heading) in the first column, then the subcategory (level-2 heading) in the second, and finally the specific item in the third—this would be much more efficient.