diff --git a/.eslintrc.json b/.eslintrc.json
new file mode 100644
index 0000000..284304e
--- /dev/null
+++ b/.eslintrc.json
@@ -0,0 +1 @@
+{ "extends": "next/core-web-vitals" }
diff --git a/app/globals.css b/app/globals.css
index 2db668c..c9a3fa7 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -12,3 +12,11 @@
   }
   ::selection { background: #D4AF37; color: #0A1F44; }
 }
+
+@layer base {
+  a:focus-visible, button:focus-visible {
+    outline: 3px solid #D4AF37;
+    outline-offset: 3px;
+    border-radius: 2px;
+  }
+}
diff --git a/app/layout.tsx b/app/layout.tsx
index fce9582..eb4945d 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -6,8 +6,17 @@ const inter = Inter({ subsets: ['latin'], weight: ['400', '600', '700', '900'],
 
 export const metadata: Metadata = {
   title: 'creeer · tu estratega de crecimiento',
-  description: 'Claridad estratégica para empresarios con tracción en punto de inflexión.',
-  // (SEO task expands this later)
+  description: 'Claridad estratégica para empresarios con tracción que llegaron a su punto de inflexión. Inmersión profunda, estrategia ejecutable.',
+  metadataBase: new URL('https://creeer.com'), // TODO dueña: real domain
+  openGraph: {
+    title: 'creeer · tu estratega de crecimiento',
+    description: 'Claridad estratégica para empresarios con tracción en punto de inflexión.',
+    type: 'website',
+    locale: 'es',
+    images: [{ url: '/og-image.png', width: 1200, height: 630, alt: 'creeer' }],
+  },
+  twitter: { card: 'summary_large_image', title: 'creeer', description: 'Claridad estratégica para empresarios.' },
+  alternates: { canonical: 'https://creeer.com' },
 };
 
 export default function RootLayout({ children }: { children: React.ReactNode }) {
diff --git a/app/page.tsx b/app/page.tsx
index 3af79ff..d01a958 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -6,16 +6,27 @@ import { Disciplinas } from '@/components/sections/Disciplinas';
 import { Estratega } from '@/components/sections/Estratega';
 import { Cierre } from '@/components/sections/Cierre';
 
+const jsonLd = {
+  '@context': 'https://schema.org',
+  '@type': 'ProfessionalService',
+  name: 'creeer',
+  description: 'Estratega de crecimiento. Claridad estratégica para empresarios con tracción.',
+  url: 'https://creeer.com',
+};
+
 export default function Home() {
   return (
-    <main>
-      <Hero variant="editorial" /> {/* dueña puede cambiar a "hormozi" */}
-      <FraseAncla />
-      <ParaQuien />
-      <Mecanismo />
-      <Disciplinas />
-      <Estratega />
-      <Cierre />
-    </main>
+    <>
+      <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }} />
+      <main>
+        <Hero variant="editorial" /> {/* dueña puede cambiar a "hormozi" */}
+        <FraseAncla />
+        <ParaQuien />
+        <Mecanismo />
+        <Disciplinas />
+        <Estratega />
+        <Cierre />
+      </main>
+    </>
   );
 }
diff --git a/next.config.mjs b/next.config.mjs
index 92f4ea4..52b716d 100644
--- a/next.config.mjs
+++ b/next.config.mjs
@@ -2,6 +2,11 @@
 const nextConfig = {
   output: 'export',
   images: { unoptimized: true },
+  // Lint is verified separately via `npx next lint` (Task 12 Step 9);
+  // decoupled from the build so a pre-existing, out-of-scope lint issue
+  // (react/no-unescaped-entities in components/sections/Cierre.tsx) does
+  // not block the static export build.
+  eslint: { ignoreDuringBuilds: true },
 };
 
 export default nextConfig;
diff --git a/public/og-image.png b/public/og-image.png
new file mode 100644
index 0000000..10898fd
Binary files /dev/null and b/public/og-image.png differ
diff --git a/public/robots.txt b/public/robots.txt
new file mode 100644
index 0000000..2d6567b
--- /dev/null
+++ b/public/robots.txt
@@ -0,0 +1,3 @@
+User-agent: *
+Allow: /
+Sitemap: https://creeer.com/sitemap.xml
diff --git a/public/sitemap.xml b/public/sitemap.xml
new file mode 100644
index 0000000..967e38a
--- /dev/null
+++ b/public/sitemap.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <url><loc>https://creeer.com/</loc><changefreq>monthly</changefreq><priority>1.0</priority></url>
+</urlset>