Return monospaced Inter font to reality

site/content/_imports/blog.html

@@ -5,7 +5,7 @@
     {% for post in posts %}
         {% set showFavourite = post.isFavourite and highlightFavourites %}
         <li>
-            <span class="font-tnum secondary">{{ post.publishedDate | fmtdate }}</span> {% if showFavourite %}<b class="favourite">{% endif %}<a href="/blog/{{ post.slug }}">{{ post.title }}</a>{% if showFavourite %}</b>{% endif %}
+            <span class="font--tnum text--secondary">{{ post.publishedDate | fmtdate }}</span> {% if showFavourite %}<b class="favourite">{% endif %}<a href="/blog/{{ post.slug }}">{{ post.title }}</a>{% if showFavourite %}</b>{% endif %}
         </li>
     {% endfor %}
 </ul>

site/content/index.html

@@ -50,10 +50,9 @@ description: "Hi! I'm Abi, a UK-based Computer Science student, photographer and
             <li>small link seperator dots like in the footer of https://rsapkf.org</li>
         </ul>
     </li>
+    <li>local copies of fonts pleaseeeeeeee</li>
     <li>blog has special things going on that need looking at
         <ul>
-            <li>monospaced inter version is not a thing (yet)</li>
-            <li>local copies of fonts pleaseeeeeeee</li>
             <li>if we're going to build a toc box then we need to actually integrate the fucker</li>
         </ul>
     </li>

site/css/_typography.scss

@@ -14,6 +14,14 @@ $font-size: 16px;
     font-size: $font-size;
 }
 
+@mixin font--tnum {
+    font-feature-settings: "tnum" 1;
+}
+
+.font--tnum {
+    @include font--tnum;
+}
+
 @supports (font-variation-settings: normal) {
     :root { font-family: InterVariable, sans-serif; }
 }