Hey Tridion Docs fam!

New to the scene here, and I'm tackling a project to customize the look and feel of our published content. Basically, I want our shiny new docs to match our company's branding perfectly.

Wondering if any of you customization wizards can lend a hand with these:

Tridion Tweaks: What are the best ways to go about customizing output in Tridion Docs?
Plugin Power? Are there any cool tools or plugins out there that can help me achieve this branding magic?
Future-Proofing: How can I make sure my customizations won't break when Tridion Docs updates?
Learning Resources: Any hidden knowledge stashes or detailed guides I should be checking out?

I also check this: https://community.rws.com/developers-more/salesforcedeveloper/tridiondocs-developers/b/knowledge_center_developer_blog/posts/sdltridiondocshtmloutputcustomization But I have not found any solution so, basically, any tips, tricks, or war stories from your experience would be a huge help! Thanks a ton in advance for your expertise.

Looking forward to crafting some seriously on-brand docs!