I would look into NovelAI for writing, it's quite specifically for that. It's a paid servicd similar to chatgpt, but it's uncensored and private.
You can run your own lightweight LLM on a laptop but the output will be useless. Good output requires big boy compute.
If you do want to run it on your own hardware, look into Ollama. There's also options to run your own LLM in the cloud with a not too difficult process for non-techies.
Frankly, id find the right LLM for your needs and just pay for it per month, maybe novelai, maybe something else, but chatgpt is not great for creative fiction.
Tailwind feels like CSS i have to re-learn. It's maybe slightly easier? mostly it just makes my html unreadable to the point i barely know what's going in anymore. I don't do much frontend stuff but i'm gonna go back to plain old CSS for my next project. It all sounds good in theory, but in practice, tailwind has been more work rather than less. I feel like i put a fair amount of time in understanding how everything works too.
It just really feels like one of those things that makes little difference but i wasted way roo much time on trying to give it it's fair chance.