How to limit the text lengh of a blog summary

Hello,
I'm using the theme Quark to make my website and I'm wondering how could I limit what is shown on the page summary of the blog template?
Example :
https://namur.parcoursvelo.be/bikepacking/tag:Interm%C3%A9diaire#body-wrapper
If you go on this page, you will see that " [Gravel Découverte du Hainaut]" has a lot of text under it. I would like it not to be shown

Thank you,
Denis

Topic title says you want to limit it. Then you ask how to not show it. Which exactly behaviour do you want? 🤔

I am detailing an example. If you click on the link, you will see that under "gravel découverte du hainaut", compared to others summary there is some text that are shown. This is what I would like to limit

@Delo, we cannot see anything from here and are left to guessing... which is not ideal.

Please help the community help you, by providing proper information:

• What have your tried?
• Which sections of the documentation about "summary" have you consulted?
• Show the Twig snippet that displays each blog item in the list
• Show the content of the page (frontmatter + markdown)

Please use block quotes (tripple backticks ```) to embed code and content.

• Limit text length means you want to show smaller part of the text
• "Not to be shown" means you want to completely hide the text

Which is it? Both are two different things

imo s/he meant limiting length of text like this example
make this
HELLO THIS IS A LONG TEXT EXAMPLE WHICH I WANT TO LIMIT
to this
HELLO THIS IS A LONG TEXT EX...

like limiting it to 30 character and add 3 dots to end when 30+ character.
idk how to do that for a theme but it can be solved with twig.

BTW i also like to use bike, i used to go to work with it which is 10km away :) and your site looks good.

@Delo, It has been 8 days since your last reply. Any progress you would like to share?