diff --git a/src/app/[locale]/applications/[slug]/ApplicationClient.tsx b/src/app/[locale]/applications/[slug]/ApplicationClient.tsx
index 1e777de..5d761bb 100644
--- a/src/app/[locale]/applications/[slug]/ApplicationClient.tsx
+++ b/src/app/[locale]/applications/[slug]/ApplicationClient.tsx
@@ -904,7 +904,7 @@ function ExpandedCaseStudy({ node }: { node: any }) {
                     const fullImgSrc = `/cases/${nodeSlug}/${img}`;
                     return (
                       <div key={`g-${idx}`} className="relative w-full aspect-video rounded-2xl md:rounded-3xl overflow-hidden border border-black/10 dark:border-white/10 shadow-lg group bg-white">
-                        <Image src={fullImgSrc} alt="Installation" fill className="object-cover group-hover:scale-105 transition-transform duration-700" />
+                        <Image src={fullImgSrc} alt="Installation" fill sizes="(max-width: 768px) 100vw, 50vw" className="object-cover group-hover:scale-105 transition-transform duration-700" />
                         <button
                           onClick={() => openLightbox(fullImgSrc)}
                           className="absolute inset-0 w-full h-full bg-black/0 hover:bg-black/30 active:bg-black/40 transition-all flex items-center justify-center opacity-0 group-hover:opacity-100 backdrop-blur-[0px] hover:backdrop-blur-sm touch-manipulation"
@@ -1045,7 +1045,7 @@ export default function ApplicationClient({ data, realCases, images }: { data: a
 
       <section className="relative w-full h-[50vh] md:h-[70vh] flex items-end justify-start overflow-hidden">
         {heroImage ? (
-          <Image src={heroImage} alt={data.title} fill className="object-cover object-center scale-105 animate-slow-zoom" priority />
+          <Image src={heroImage} alt={data.title} fill sizes="100vw" className="object-cover object-center scale-105 animate-slow-zoom" priority />
         ) : (
           <div className="absolute inset-0 bg-gradient-to-br from-[#0066CC]/20 to-black/80" />
         )}
@@ -1149,7 +1149,7 @@ export default function ApplicationClient({ data, realCases, images }: { data: a
                     <div className="flex items-center gap-5 flex-1">
                       <div className="w-16 h-16 md:w-20 md:h-20 rounded-2xl md:rounded-3xl bg-black/5 dark:bg-black/50 border border-black/10 dark:border-white/5 flex items-center justify-center shrink-0 overflow-hidden relative shadow-inner">
                         {node.mediaFileName ? (
-                          <Image src={`/cases/${nodeToSlug(node.title)}/${node.mediaFileName}`} alt={node.title} fill className="object-cover opacity-90 group-hover:scale-110 transition-transform duration-700" />
+                          <Image src={`/cases/${nodeToSlug(node.title)}/${node.mediaFileName}`} alt={node.title} fill sizes="100px" className="object-cover opacity-90 group-hover:scale-110 transition-transform duration-700" />
                         ) : (
                           <Cpu size={28} className="text-[#0066CC]/50 dark:text-[#00F0FF]/50" />
                         )}
diff --git a/src/app/[locale]/heritage/page.tsx b/src/app/[locale]/heritage/page.tsx
index dee83c5..390f737 100644
--- a/src/app/[locale]/heritage/page.tsx
+++ b/src/app/[locale]/heritage/page.tsx
@@ -256,7 +256,7 @@ export default async function HeritagePage({ params }: { params: Promise<{ local
 
               {sec.type === 'image' && sec.mediaUrl && (
                 <div className="relative w-full h-80 md:h-[500px] rounded-3xl overflow-hidden border border-black/10 dark:border-white/10 shadow-2xl">
-                  <Image src={`/heritage/${sec.mediaUrl}`} alt={sec.title || "Heritage Image"} fill className="object-cover grayscale hover:grayscale-0 transition-all duration-1000" />
+                  <Image src={`/heritage/${sec.mediaUrl}`} alt={sec.title || "Heritage Image"} fill sizes="100vw" className="object-cover grayscale hover:grayscale-0 transition-all duration-1000" />
                 </div>
               )}
 
diff --git a/src/app/[locale]/news/[slug]/page.tsx b/src/app/[locale]/news/[slug]/page.tsx
index 9444c7c..168940e 100644
--- a/src/app/[locale]/news/[slug]/page.tsx
+++ b/src/app/[locale]/news/[slug]/page.tsx
@@ -294,14 +294,14 @@ export default async function ArticlePage({ params }: { params: Promise<{ slug:
 
       <section className="relative w-full h-[50vh] md:h-[70vh] flex items-end justify-center overflow-hidden bg-[#1D1D1F]">
         {article.coverImage && (
-         <Image src={`/news/${slug}/${article.coverImage}`} alt={article.title} fill className="object-cover object-center opacity-60" priority />
+         <Image src={`/news/${slug}/${article.coverImage}`} alt={article.title} fill sizes="100vw" className="object-cover object-center opacity-60" priority />
         )}
         <div className="absolute inset-0 bg-gradient-to-t from-white via-white/80 dark:from-[#0A0A0C] dark:via-[#0A0A0C]/80 to-transparent" />
         
         <div className="relative z-10 max-w-4xl w-full mx-auto px-6 pb-12 md:pb-20 text-center">
           <div className="flex flex-wrap items-center justify-center gap-4 text-xs font-semibold uppercase tracking-widest text-[#0066CC] dark:text-[#4DA6FF] mb-6">
             <span className="flex items-center gap-1.5 bg-[#0066CC]/10 dark:bg-[#4DA6FF]/10 px-3 py-1.5 rounded-full"><Tag size={14}/> {article.category}</span>
-            <span className="flex items-center gap-1.5 text-[#86868B]"><Calendar size={14}/> {new Date(article.publishedAt).toLocaleDateString(locale === 'en' ? 'en-US' : locale, { month: 'long', day: 'numeric', year: 'numeric' })}</span>
+            <time dateTime={new Date(article.publishedAt).toISOString()} className="flex items-center gap-1.5 text-[#86868B]"><Calendar size={14}/> {new Date(article.publishedAt).toLocaleDateString(locale === 'en' ? 'en-US' : locale, { month: 'long', day: 'numeric', year: 'numeric' })}</time>
           </div>
           <h1 className="text-4xl md:text-6xl font-medium text-[#1D1D1F] dark:text-[#F5F5F7] tracking-tight mb-6 leading-tight">
             {article.title}
@@ -312,8 +312,8 @@ export default async function ArticlePage({ params }: { params: Promise<{ slug:
         </div>
       </section>
 
-      <div className="relative z-10 max-w-3xl mx-auto px-6 mt-12 md:mt-20">
-        
+      <article className="relative z-10 max-w-3xl mx-auto px-6 mt-12 md:mt-20">
+
         {/* 🔥 EL MARKDOWN TRADUCIDO AL VUELO 🔥 */}
         <div className="max-w-none mb-16">
           {renderMarkdown(article.content)}
@@ -325,7 +325,7 @@ export default async function ArticlePage({ params }: { params: Promise<{ slug:
             <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
               {gallery.map((imgSrc: string, idx: number) => (
                 <div key={idx} className={`relative rounded-3xl overflow-hidden bg-[#1D1D1F] border border-black/10 dark:border-white/10 ${idx === 0 && gallery.length % 2 !== 0 ? 'sm:col-span-2 h-64 md:h-96' : 'h-48 md:h-64'}`}>
-                 <Image src={`/news/${slug}/gallery/${imgSrc}`} alt={`Gallery image ${idx + 1}`} fill className="object-cover hover:scale-105 transition-transform duration-700" />
+                 <Image src={`/news/${slug}/gallery/${imgSrc}`} alt={`Gallery image ${idx + 1}`} fill sizes="(max-width: 640px) 100vw, 50vw" className="object-cover hover:scale-105 transition-transform duration-700" />
                 </div>
               ))}
             </div>
@@ -352,7 +352,7 @@ export default async function ArticlePage({ params }: { params: Promise<{ slug:
             </div>
           )}
         </div>
-      </div>
+      </article>
     </main>
   );
 }
diff --git a/src/app/[locale]/news/page.tsx b/src/app/[locale]/news/page.tsx
index 5d14dab..f1e9ece 100644
--- a/src/app/[locale]/news/page.tsx
+++ b/src/app/[locale]/news/page.tsx
@@ -76,10 +76,11 @@ export default async function NewsHub({ params }: { params: Promise<{ locale: st
             
             {/* HERO ARTICLE */}
             {heroArticle && (
+              <article>
               <Link href={`/${locale}/news/${heroArticle.slug}`} className="group relative w-full rounded-[2rem] overflow-hidden bg-white/60 dark:bg-[#1D1D1F]/40 backdrop-blur-2xl border border-black/5 dark:border-white/10 flex flex-col md:flex-row shadow-lg hover:shadow-xl transition-all duration-500 hover:-translate-y-1">
                 <div className="w-full md:w-1/2 h-56 md:h-[400px] relative overflow-hidden bg-[#1D1D1F]">
                   {heroArticle.coverImage ? (
-                    <Image src={`/news/${heroArticle.slug}/${heroArticle.coverImage}`} alt={heroArticle.title} fill className="object-cover transition-transform duration-700 group-hover:scale-105" />
+                    <Image src={`/news/${heroArticle.slug}/${heroArticle.coverImage}`} alt={heroArticle.title} fill sizes="(max-width: 768px) 100vw, 50vw" className="object-cover transition-transform duration-700 group-hover:scale-105" />
                   ) : (
                     <div className="absolute inset-0 bg-gradient-to-br from-[#0066CC]/20 to-[#0A0A0C] flex items-center justify-center"><Newspaper size={64} className="text-white/10" /></div>
                   )}
@@ -87,7 +88,7 @@ export default async function NewsHub({ params }: { params: Promise<{ locale: st
                 <div className="w-full md:w-1/2 p-6 md:p-10 flex flex-col justify-center">
                   <div className="flex items-center gap-3 mb-4">
                     <span className="text-[9px] font-bold uppercase tracking-widest text-[#0066CC] dark:text-[#4DA6FF] bg-[#0066CC]/10 dark:bg-[#4DA6FF]/10 px-2.5 py-1 rounded-full">{heroArticle.category}</span>
-                    <span className="text-[10px] font-medium text-[#86868B] flex items-center gap-1"><Calendar size={12}/> {new Date(heroArticle.publishedAt).toLocaleDateString(locale === 'en' ? 'en-US' : locale, { month: 'short', day: 'numeric', year: 'numeric' })}</span>
+                    <time dateTime={new Date(heroArticle.publishedAt).toISOString()} className="text-[10px] font-medium text-[#86868B] flex items-center gap-1"><Calendar size={12}/> {new Date(heroArticle.publishedAt).toLocaleDateString(locale === 'en' ? 'en-US' : locale, { month: 'short', day: 'numeric', year: 'numeric' })}</time>
                   </div>
                   <h2 className="text-2xl md:text-3xl font-medium text-[#1D1D1F] dark:text-white mb-3 leading-tight group-hover:text-[#0066CC] dark:group-hover:text-[#4DA6FF] transition-colors">{heroArticle.title}</h2>
                   <p className="text-sm text-[#86868B] dark:text-[#A1A1A6] leading-relaxed mb-6 line-clamp-3">{heroArticle.excerpt}</p>
@@ -96,16 +97,18 @@ export default async function NewsHub({ params }: { params: Promise<{ locale: st
                   </span>
                 </div>
               </Link>
+              </article>
             )}
 
             {/* GRID COLUMNAS */}
             {gridArticles.length > 0 && (
               <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4 md:gap-6 mt-4">
                 {gridArticles.map((article) => (
-                  <Link key={article.id} href={`/${locale}/news/${article.slug}`} className="group flex flex-col bg-white/60 dark:bg-[#1D1D1F]/40 backdrop-blur-md border border-black/5 dark:border-white/10 rounded-3xl overflow-hidden shadow-sm hover:shadow-md transition-all duration-500 hover:-translate-y-1">
+                  <article key={article.id} className="flex flex-col">
+                  <Link href={`/${locale}/news/${article.slug}`} className="group flex flex-col flex-1 bg-white/60 dark:bg-[#1D1D1F]/40 backdrop-blur-md border border-black/5 dark:border-white/10 rounded-3xl overflow-hidden shadow-sm hover:shadow-md transition-all duration-500 hover:-translate-y-1">
                     <div className="w-full h-40 relative overflow-hidden bg-[#1D1D1F]">
                       {article.coverImage ? (
-                        <Image src={`/news/${article.slug}/${article.coverImage}`} alt={article.title} fill className="object-cover transition-transform duration-700 group-hover:scale-105" />
+                        <Image src={`/news/${article.slug}/${article.coverImage}`} alt={article.title} fill sizes="(max-width: 640px) 100vw, (max-width: 1024px) 50vw, 25vw" className="object-cover transition-transform duration-700 group-hover:scale-105" />
                       ) : (
                         <div className="absolute inset-0 bg-gradient-to-br from-[#0066CC]/10 to-[#0A0A0C]" />
                       )}
@@ -113,7 +116,7 @@ export default async function NewsHub({ params }: { params: Promise<{ locale: st
                     <div className="p-5 flex flex-col flex-1">
                       <div className="flex justify-between items-center mb-3">
                         <span className="text-[8px] font-bold uppercase tracking-widest text-[#0066CC] dark:text-[#4DA6FF]">{article.category}</span>
-                        <span className="text-[9px] text-[#86868B]">{new Date(article.publishedAt).toLocaleDateString(locale === 'en' ? 'en-US' : locale, { month: 'short', day: 'numeric' })}</span>
+                        <time dateTime={new Date(article.publishedAt).toISOString()} className="text-[9px] text-[#86868B]">{new Date(article.publishedAt).toLocaleDateString(locale === 'en' ? 'en-US' : locale, { month: 'short', day: 'numeric' })}</time>
                       </div>
                       <h3 className="text-base font-medium text-[#1D1D1F] dark:text-white mb-2 leading-snug group-hover:text-[#0066CC] dark:group-hover:text-[#4DA6FF] transition-colors line-clamp-2">{article.title}</h3>
                       <p className="text-xs text-[#86868B] dark:text-[#A1A1A6] line-clamp-2 mb-4">{article.excerpt}</p>
@@ -122,6 +125,7 @@ export default async function NewsHub({ params }: { params: Promise<{ locale: st
                       </span>
                     </div>
                   </Link>
+                  </article>
                 ))}
               </div>
             )}
diff --git a/src/proxy.ts b/src/proxy.ts
index 5a4e7e1..32a771b 100644
--- a/src/proxy.ts
+++ b/src/proxy.ts
@@ -37,7 +37,9 @@ export async function proxy(request: NextRequest) {
         if (isPublicHQRoute) {
           return NextResponse.redirect(new URL('/hq-command/dashboard', request.url));
         }
-        return NextResponse.next(); // Pasa al CMS tranquilamente
+        const authedRes = NextResponse.next();
+        authedRes.headers.set('X-Robots-Tag', 'noindex, nofollow');
+        return authedRes;
       } catch (error) {
         // Pase falso o expirado
         if (!isPublicHQRoute) {
@@ -45,7 +47,9 @@ export async function proxy(request: NextRequest) {
         }
       }
     }
-    return NextResponse.next(); // Pasa a login/setup si no hay cookie
+    const hqRes = NextResponse.next();
+    hqRes.headers.set('X-Robots-Tag', 'noindex, nofollow');
+    return hqRes;
   }
 
   // --------------------------------------------------------