Result page

Hello,

currently, I try to optimize the result page.
In my opinion, the result page has a wrong style structure.

Header:
site-main
- page-header
-- h1 - page-title

List element
article
- inside-article
-- h2 entry-header
- entry-summary

Due to this incorrect css structure, the distances are not correct.

I had expected following structure:
Header:
site-main
- article
-- inside-article
--- entry-header
---- h1 entry-title

...and right below the entire content as a list.
----entry-content
----- header entry-header
------ h2

Is it normal that the structure is different than a normal page? Or is that because of the template?

How can ich change the page result list?

Best regards
Jens