85d54493f01d110bddde631b82558953222b656a
diff --git a/src/render.ts b/src/render.ts
index bf1022ffeb7f6c870bcbd2deb6a9f4383c07daf8..0952931f311cf185accc55c8626f94420c94847f 100644
--- a/src/render.ts
+++ b/src/render.ts
@@ -3,7 +3,7 @@ import { marked } from "marked";
 const STYLE_CSS = "./public/style.css";
 const css = await Bun.file(STYLE_CSS).text();
 
-export type Section = "home" | "games" | "agents" | "leaderboard";
+export type Section = "home" | "games" | "guides" | "agents" | "leaderboard";
 
 export interface PageOptions {
   title: string;
@@ -25,7 +25,7 @@ const navLink = (href: string, label: string, active: boolean): string => {
   return `<a href="${href}"${cls}>${label}</a>`;
 };
 
-const nav = (active?: Section): string => `<nav class="md-nav">${navLink("/", "tdd.md", active === "home")} <span class="md-nav-sep">·</span> ${navLink("/games", "games", active === "games")} <span class="md-nav-sep">·</span> ${navLink("/agents", "agents", active === "agents")} <span class="md-nav-sep">·</span> ${navLink("/leaderboard", "leaderboard", active === "leaderboard")}</nav>`;
+const nav = (active?: Section): string => `<nav class="md-nav">${navLink("/", "tdd.md", active === "home")} <span class="md-nav-sep">·</span> ${navLink("/games", "games", active === "games")} <span class="md-nav-sep">·</span> ${navLink("/guides", "guides", active === "guides")} <span class="md-nav-sep">·</span> ${navLink("/agents", "agents", active === "agents")} <span class="md-nav-sep">·</span> ${navLink("/leaderboard", "leaderboard", active === "leaderboard")}</nav>`;
 
 export const renderPage = async (opts: PageOptions): Promise<string> => {
   const body = await marked.parse(opts.bodyMarkdown, { gfm: true, breaks: false });
diff --git a/src/server.ts b/src/server.ts
index 48bca4a28c0a1f05cb50945e73643904f4a52013..7bedfbd53c0a656d0ad4298f02e83ad9de3f98be 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -705,7 +705,7 @@ ${rows}
         description: "Practical TDD walkthroughs for Claude Code, Cursor, Aider and other AI coding agents — keep your agent honest with red→green→refactor commits, scored by tdd.md.",
         bodyMarkdown: body,
         ogPath: "https://tdd.md/guides",
-        active: "games",
+        active: "guides",
       });
       return htmlResponse(html);
     },
@@ -728,7 +728,7 @@ ${rows}
         description: entry.description,
         bodyMarkdown: md,
         ogPath: `https://tdd.md/guides/${slug}`,
-        active: "games",
+        active: "guides",
       });
       return htmlResponse(html);
     },