css, filters: simplify resolving internal links

pandoc/filters/resolve_internal_links.lua

@@ -17,13 +17,8 @@ return {
     -- early return for broken internal links
     if f == nil then return l.content else f:close() end -- @todo maybe log broken internal links
 
-    local internal_link = l:clone()
-    internal_link.target = ("#%s%s"):format(slug, anchor)
+    l.target = ("#%s%s"):format(slug, anchor)
 
-    l.content = "[->]"
-    l.target = ("%s.html#%s"):format(slug, anchor)
-    l.classes:insert("internal-next")
-
-    return Inlines({ internal_link, l })
+    return l
   end }
 }

public_html/css/style.css

@@ -446,16 +446,6 @@ div.horizontal>* {
 }
 
 
-/* internal links */
-
-a.internal-next {
-  color: var(--md-formatting-color);
-}
-
-a.internal-next:active {
-  color: var(--red);
-}
-
 /* */
 
 .warn {