lots of random cleanup & organization

layouts/partials/functions/prepare-css.html

@@ -0,0 +1,19 @@
+{{/* Pull in CSS processed by Webpack */}}
+
+{{- define "__head_css" -}}
+  {{ with .Site.Data.manifest }}
+    {{ with index . "main.css" }}
+      <link rel="stylesheet" href="{{ .src | absURL }}">
+    {{ end }}
+  {{ end }}
+
+  {{/* Page-specific styles set via front matter, piped through PostCSS and inlined */}}
+  {{- with .Params.css -}}
+    {{/* NOTE: This file doesn't end up getting published (which is good) */}}
+    {{- $target := path.Join $.File.Dir "css/inline.scss" -}}
+    {{- $css := . | resources.FromString $target -}}
+<style>
+{{ $css.Content | safeCSS }}
+</style>
+  {{- end -}}
+{{- end -}}