How to convert apache .htaccess to lighttpd?

Question

Apache HTTP Server

There is a .htaccess file. Apache works. When ported to lighttpd, no.

# Enable rewrite engine and route requests to framework
RewriteEngine On

# Some servers require you to specify the `RewriteBase` directive
# In such cases, it should be the path (relative to the document root)
# containing this .htaccess file
#
# RewriteBase /

RewriteCond %{REQUEST_URI} \.ini$
RewriteRule \.ini$ - [R=404]

RewriteCond %{REQUEST_FILENAME} !-l
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php [L,QSA]
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]

As far as I understand .htaccess is not supported in lighttpd and you need to write everything in lighttpd.conf.
server.modules = ( "mod_access", "mod_rewrite" )
I registered it in lighttpd.conf.
In my understanding, the first two lines prohibit access to ini files, and I don’t understand what is written next.
I ask you to help convert the config file. And explain what these lines mean.
update:
Found that you can do this:

$HTTP["host"] =~ "www\.example\.com$" {
    url.rewrite-once = ( "^/(.*?)(\?.+)?$"=>"/index.php/$1?$2" )
    server.error-handler-404 = "/index.php"
}

Works, but processes all requests to the server. Those. stop loading css and js from /css and /js folders. How to make css and js load?
update2:
Rewrote the rule like this:

$HTTP["host"] =~ "www\.example\.com$" {
    url.rewrite-if-not-file = ( "^/(.*?)(\?.+)?$"=>"/index.php/$1?$2" )
    server.error-handler-404 = "/index.php"
}

Works as it should. But I'm not at all sure that this is equivalent to the condition described at the beginning. If someone can help, I'll be grateful.