diff --git a/l4d2web/l4d2web/static/js/srccfg-grammar.js b/l4d2web/l4d2web/static/js/srccfg-grammar.js
new file mode 100644
index 0000000..7f8326e
--- /dev/null
+++ b/l4d2web/l4d2web/static/js/srccfg-grammar.js
@@ -0,0 +1,17 @@
+// Prism grammar for Source-engine config files (server.cfg-style).
+// Tokens: comment, string, number, keyword, identifier. Purely visual —
+// no semantic validation of cvars or values.
+(function (Prism) {
+  if (!Prism) return;
+  Prism.languages.srccfg = {
+    comment: /\/\/.*/,
+    string: {
+      pattern: /"(?:\\.|[^"\\])*"/,
+      greedy: true,
+    },
+    keyword: /\b(?:exec|alias|bind|unbind|toggle)\b/,
+    number: /\b-?\d+(?:\.\d+)?\b/,
+    identifier: /\b[a-zA-Z_][a-zA-Z0-9_]*\b/,
+    operator: /[+\-;]/,
+  };
+})(typeof window !== "undefined" ? window.Prism : undefined);