fix Inter italics on Chrome, and only declare latin and latin-ext unicode ranges

assets/sass/components/_global.scss

@@ -55,6 +55,12 @@ pre,
   .monospace {
     font-family: settings.$font-stack-mono-variable;
   }
+
+  // Chrome doesn't automatically slant multi-axis Inter var, for some reason
+  em {
+    font-style: italic;
+    font-variation-settings: "ital" 1, "slnt" -10;
+  }
 }
 
 a {

assets/sass/components/_syntax.scss

@@ -3,7 +3,7 @@
 // all code
 code {
   font-size: 0.925em;
-  letter-spacing: 0;
+  letter-spacing: normal;
   page-break-inside: avoid; // stylelint-disable-line plugin/no-unsupported-browser-features
 }