What self-contained theme that scales well on mobile?

[ksenia]

Hello. I noticed that most themes require external resources from servers I do not control. Depending on third party services is unacceptable for me. What theme do you suggest that is (in order of descending importance):

• self-contained (does not use third-party servers)
  
• scales well on mobile
  
• dark
  
• simple
  

?

Thanks in advance.