Good systems have understandable boundaries.
Knowing where content, code, and deployment belong makes small projects easier to change.
A project becomes easier to maintain when each part has a clear job. Content holds the writing. Templates decide how it appears. Deployment turns a tested version into the site people can visit.
Give each change a home
Correcting a paragraph should not require changing a template. Updating the site navigation should not require editing every article. Changing a deployment setting should not alter the writing.
Those boundaries help you predict the effect of a change before making it.
Keep the handoff visible
A version-controlled repository records the proposed change. A preview shows the result. A production deployment publishes a specific version.
When those steps are visible, it is easier to answer a practical question: which version are readers seeing?
Leave room to grow
Boundaries should support the current project without creating unnecessary layers. A small configuration file for the site name and a folder of Markdown articles may be enough.
The aim is not elaborate architecture. It is a project whose next change is understandable.