Refine PDF-Converted Word File

I have a Word document that was generated by exporting a PDF and it now needs a careful clean-up. The goal is to preserve the page-by-page layout exactly as it appeared in the original PDF while fixing the usual conversion quirks.

What I need done:
• Standardise all fonts and text sizes so they match the PDF’s visual hierarchy.
• Tidy up margins and line/paragraph spacing so every element lines up precisely.
• Rebuild the header and footer so they mirror the source pages yet work natively inside Word.

Please carry out the edits in Microsoft Word 2019 (or any later release) to ensure full compatibility going forward. When finished, return a single .docx file that opens cleanly with no missing styles or shifted content.