Accessing (encrypted) iCloud documents remotely / query about 'localhost' folder

[Michael]

@Megan_Fraser

However, what if I were accessing this data on a PC, or a Mac that didn’t have my Apple ID logged in, and so could only access the files through iCloud’s web platform - iCloud[dot]com?

It is not possible to connect cryptomator with your encrypted files via iCloud webinterface.
But I assume you are looking for a way to access your vault on PC without having the encrypted files synced to your PC. If Im right, this solution might be interesting for you:

How do I use Cryptomator without local sync?

Hi there, I want to backup files (encrypted) only on the remote cloud storage without syncing it. In my case, on Google Drive, but this is not mandatory for me. Is it possible to achieve this with cryptomator? The thought behind this is, that I want to long-term backup files (like old photos or work related backups) on a drive encrypted and I can’t find a good solution for that. Many thanks in advance and cheers, Christian