Exclude main.scss from Lunr search index

assets/css/main.scss

@@ -1,5 +1,6 @@
 ---
 # Only the main Sass file needs front matter (the dashes are enough)
+search: false
 ---
 
 @charset "utf-8";

assets/js/lunr/lunr-store.js

@@ -47,7 +47,8 @@ var store = [
       }{%- unless forloop.last and l -%},{%- endunless -%}
     {%- endfor -%}
   {%- endfor -%}{%- if site.lunr.search_within_pages -%},
-  {%- for doc in site.pages -%}
+  {%- assign pages = site.pages | where_exp:'doc','doc.search != false' -%}
+  {%- for doc in pages -%}
     {%- if forloop.last -%}
       {%- assign l = true -%}
     {%- endif -%}