Test Title: Quote Functionality Test

This is a regular paragraph, used to test converting existing text into a quote.

Quote content:
"Design is not about making things look beautiful, but about making the usage process clear, natural, and efficient."

— Product Design Principles

This is a longer quote. The quoted content may contain multiple sentences and may span multiple lines. Please confirm that the editor can maintain the quote style, paragraph spacing, and line break formatting.

Nested quote test:

First-level quote: User feedback is an important basis for improving the product.

Second-level quote: The user indicated that the position of the save button is not obvious enough.

Third-level quote: It is recommended to add icons, tooltip text, and a save success status.

After the quote ends, here is regular text to confirm that the cursor can correctly exit the quote format.

The quote contains bold text, italic text, and link text:
Key note: Please confirm that the text formatting inside the quote can still be edited normally.
Italic example: This sentence is used to test the italic effect within a quote.
Link example: https://example.com

Special character test:
< > & " ' / \ | @ # % ￥ € ™

Empty quote test:

End of quote.