fix: soften dark theme sidebar text colors to reduce eye strain

Author: abose

src-mdviewer/src/styles/markdown.css

@@ -11,6 +11,12 @@
   margin-inline: auto;
 }
 
+@media (min-width: 450px) {
+  .markdown-body {
+    padding-inline: 70px;
+  }
+}
+
 /* Headings — Confluence/Atlassian scale */
 .markdown-body h1,
 .markdown-body h2,

src-mdviewer/src/styles/themes/variables.css

@@ -10,7 +10,7 @@
   --font-size-content: clamp(1rem, 0.925rem + 0.25vw, 1.125rem);
   --line-height: 1.6;
   --line-height-heading: 1.25;
-  --content-max-width: 1100px;
+  --content-max-width: 90ch;
   --letter-spacing: normal;
 
   /* Layout */