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Squared Squares

This came to me in a dream somehow. I've seen similar questions around, but hope this is novel.

The premise is straightforward:

Input: one positive integer.

Output is a pretty square squared using these fancy characters.

Examples:

n = 1

╔═══╗
║   ║
╚═══╝

n = 2

╔═══╦═══╗
║   ║   ║
╠═══╬═══╣
║   ║   ║
╚═══╩═══╝

...

n = 10

╔═══╦═══╦═══╦═══╦═══╦═══╦═══╦═══╦═══╦═══╗
║   ║   ║   ║   ║   ║   ║   ║   ║   ║   ║
╠═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╣
║   ║   ║   ║   ║   ║   ║   ║   ║   ║   ║
╠═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╣
║   ║   ║   ║   ║   ║   ║   ║   ║   ║   ║
╠═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╣
║   ║   ║   ║   ║   ║   ║   ║   ║   ║   ║
╠═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╣
║   ║   ║   ║   ║   ║   ║   ║   ║   ║   ║
╠═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╣
║   ║   ║   ║   ║   ║   ║   ║   ║   ║   ║
╠═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╣
║   ║   ║   ║   ║   ║   ║   ║   ║   ║   ║
╠═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╣
║   ║   ║   ║   ║   ║   ║   ║   ║   ║   ║
╠═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╣
║   ║   ║   ║   ║   ║   ║   ║   ║   ║   ║
╠═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╬═══╣
║   ║   ║   ║   ║   ║   ║   ║   ║   ║   ║
╚═══╩═══╩═══╩═══╩═══╩═══╩═══╩═══╩═══╩═══╝

Note that it's three across and one high (plus corners) so that it appears more squarely.

     -3-   
    ╔═══╗
  1 ║   ║
    ╚═══╝

Take your input and output as desired, trailing spaces and lines are fine.

It's , go for the fewest bytes in your preferred lang!

Answer*

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