Mobile-first indexing means search engines look at the mobile version of a website first when deciding how to rank it. This matters because most people search the internet using their phones. If your mobile site is slow or missing content, your rankings can drop even if the desktop site looks fine. Search engines want to show results that work well on mobile screens. Making your mobile pages load fast and show the same information as desktop pages can protect your visibility in search results. What do you think about this idea?