style: hide nav title text on mobile, keep only logo

Hide the site title text (rustledger, rustfava, etc.) on mobile viewports
(max-width: 768px) to save horizontal space. The logo remains visible.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: robcohen

docs/.vitepress/theme/custom.css

@@ -224,6 +224,11 @@ body {
    ======================================== */
 
 @media (max-width: 768px) {
+    /* Hide site title text on mobile, keep only logo */
+    .VPNavBarTitle .title {
+        display: none !important;
+    }
+
     /* Remove extra top spacing on mobile */
     .VPDoc {
         margin-top: 0 !important;

pta-standards-docs/.vitepress/theme/custom.css

@@ -173,6 +173,11 @@ body {
    ======================================== */
 
 @media (max-width: 768px) {
+    /* Hide site title text on mobile, keep only logo */
+    .VPNavBarTitle .title {
+        display: none !important;
+    }
+
     /* Remove extra top spacing on mobile */
     .VPDoc {
         margin-top: 0 !important;

rustfava-docs/.vitepress/theme/custom.css

@@ -260,6 +260,11 @@ body {
    ======================================== */
 
 @media (max-width: 768px) {
+    /* Hide site title text on mobile, keep only logo */
+    .VPNavBarTitle .title {
+        display: none !important;
+    }
+
     /* Remove extra top spacing on mobile */
     .VPDoc {
         margin-top: 0 !important;