What product and what type are suitable for writing a detailed design?

[sangsub.kim]

We currently use Jira to manage our detailed design documents.

But I'm still not sure if this is the correct form.

Reusability seems to be poor, and the link with SRS takes too much work.

I purchased another app to manage the detailed design, but this only improved the management of the detailed design, but did not help with efficient writing.

Although it is very difficult for developers to write, it is very easy for administrators to manage SRS-based traceability.

The detailed design was reviewed based on Confluence, but in this case, the detailed design is expected to be managed in several documents.
It will increase usability for developers, but I'm not sure it will manage traceability well with a Jira-based SRS.

Our development code (features) is very large and complex.
I'm not sure Confluence-based detailed design can handle this.

Please give your opinion on a good way to ensure both developer usability and administrator SRS traceability.