So I'm competing for a very competitive keyword, and I've been on the bottom of page 2 for a while now, ranking for my homepage, which is very content rich and has GREAT links pointing to it. Out of nowhere, last week I dropped completely out of the top 100 or so, yet one of my article posts now ranks on page 6 or so for the same keyword. I have great authoritative links, my on-page is spot on, all of my articles are super super high quality, I don't understand how my homepage, which has ranked for the main keyword for months on page 2, can just completely drop out of the top 100 or so.... Can anyone help provide some insight?