Using Adobe InDesign, I made the layout of this report with interactive* elements. Clickable items:

• TOC items,
• Index items at the end of the Report,
• Links to the TOC and to the Index in the footer of the pages.

And, of course, URLs within the text of the Report are interactive by default.

Scroll over screenshots of some of the pages, or view the PDF via the link below to check interactivity:

*Please use Adobe Acrobat (free) for viewing.