Landing Page as a Serial Story
It will force you to write in a way that makes the reader want to read more, and at the same time get the reader used to clicking to get more which might help with the call to action.
Instead of showing the whole landing page at once, you only show the first section and the rest of the section’s sub-headlines. This means that you need to write the first section (and subsequently each one following) in a way that makes the reader want to click on the next section’s sub-header to read what’s coming next in that section. It’s like a serial story or a TV series – you use a cliffhanger. You might also want to have a simple call to action at the end of the first section explaining what to do next.