feat: add checkmarks to Languages, References, and Other sections to match old CV

static/css/main.css

@@ -1341,6 +1341,14 @@ a:focus {
     color: var(--text-dark);
 }
 
+/* Add checkmarks before language items */
+.language-item::before {
+    content: "✓ ";
+    color: var(--text-dark);
+    font-weight: bold;
+    margin-right: 0.3em;
+}
+
 .award-item small,
 .course-item small {
     color: #666;
@@ -1358,6 +1366,14 @@ a:focus {
     margin-bottom: 0.5em;
 }
 
+/* Add checkmarks before reference items */
+.reference-item::before {
+    content: "✓ ";
+    color: var(--accent-blue);
+    font-weight: bold;
+    margin-right: 0.3em;
+}
+
 .reference-item a {
     font-weight: 500;
 }
@@ -1368,6 +1384,14 @@ a:focus {
     font-size: 0.875em;
 }
 
+/* Add checkmark before other content */
+.other-content::before {
+    content: "✓ ";
+    color: var(--text-dark);
+    font-weight: bold;
+    margin-right: 0.3em;
+}
+
 /* ===============================================
    MOBILE RESPONSIVE - TWO-PAGE LAYOUT
    =============================================== */