diff --git a/.env.sample b/.env.sample
index ecee98d..2234f43 100644
--- a/.env.sample
+++ b/.env.sample
@@ -1,3 +1,3 @@
 NEXT_PUBLIC_API_BASE_URL=http://127.0.0.1:8000
 NEXT_PUBLIC_SITE_URL=http://localhost:8080
-CONTENT_CMS_ENABLED=false
+CONTENT_CMS_ENABLED=true
diff --git a/src/app/about/page.tsx b/src/app/about/page.tsx
index 541bdbc..64ac9e8 100644
--- a/src/app/about/page.tsx
+++ b/src/app/about/page.tsx
@@ -1,6 +1,7 @@
 import type { Metadata } from "next";
 import AboutUs from "@/views/AboutUs";
 import { getCmsPageContent, getCmsSiteContent } from "@/lib/content-cms";
+import { cmsPageMetadata, organizationStructuredData, safeJsonLd } from "@/lib/seo";
 import { siteUrl } from "@/lib/site";
 
 export const revalidate = 300;
@@ -12,23 +13,13 @@ export async function generateMetadata(): Promise<Metadata> {
   ]);
   const title = content.seo.title || content.title || siteContent.official_name;
   const description = content.seo.description || content.intro;
-  const image = content.seo.image?.url || siteContent.seo.image?.url || `${siteUrl}/favicon.ico`;
-
-  return {
-    title: { absolute: title },
+  return cmsPageMetadata({
+    title,
     description,
-    alternates: { canonical: "/about" },
-    openGraph: {
-      title,
-      description,
-      url: `${siteUrl}/about`,
-      siteName: siteContent.official_name,
-      type: "website",
-      images: [image],
-      locale: "fa_IR",
-    },
-    twitter: { card: "summary_large_image", title, description, images: [image] },
-  };
+    image: content.seo.image || siteContent.seo.image || siteContent.logo,
+    path: "/about",
+    siteName: siteContent.official_name,
+  });
 }
 
 export default async function AboutPage() {
@@ -43,11 +34,7 @@ export default async function AboutPage() {
     description: content.seo.description || content.intro,
     url: `${siteUrl}/about`,
     mainEntity: {
-      "@type": "Organization",
-      name: siteContent.official_name,
-      url: siteUrl,
-      logo: siteContent.logo?.url || `${siteUrl}/favicon.ico`,
-      sameAs: [siteContent.contacts.instagram, siteContent.contacts.telegram].filter(Boolean),
+      ...organizationStructuredData(siteContent),
     },
   };
 
@@ -55,7 +42,7 @@ export default async function AboutPage() {
     <>
       <script
         type="application/ld+json"
-        dangerouslySetInnerHTML={{ __html: JSON.stringify(structuredData).replace(/</g, "\\u003c") }}
+        dangerouslySetInnerHTML={{ __html: safeJsonLd(structuredData) }}
       />
       <AboutUs content={content} siteContent={siteContent} />
     </>
diff --git a/src/app/blog/[slug]/page.tsx b/src/app/blog/[slug]/page.tsx
index 6d3b1b7..4755e5e 100644
--- a/src/app/blog/[slug]/page.tsx
+++ b/src/app/blog/[slug]/page.tsx
@@ -12,6 +12,8 @@ import { Link } from "@/lib/router";
 import { blogPostPath, blogPostUrl, normalizeBlogSlugParam } from "@/lib/blog-routes";
 import { extractMarkdownHeadings } from "@/lib/markdown-headings";
 import { PublicApiError, getPublicPost, getRecommendedPosts } from "@/lib/public-api";
+import { getCmsSiteContent } from "@/lib/content-cms";
+import { organizationStructuredData, safeJsonLd } from "@/lib/seo";
 import { apiBaseUrl, siteUrl, toAbsoluteUrl } from "@/lib/site";
 import type * as Types from "@/lib/types";
 import { formatJalaliDate, getBlogCardImageUrl, getBlogHeroImageUrl, toPersianDigits } from "@/lib/utils";
@@ -163,12 +165,19 @@ export async function generateMetadata({
 }): Promise<Metadata> {
   const { slug } = await params;
   const post = await loadPost(normalizeBlogSlugParam(slug));
+  const siteContent = await getCmsSiteContent();
   const description = cleanText(post.excerpt || post.content).slice(0, 160);
   const metaTitle = post.seo_title || post.og_title || post.title;
   const metaDescription = post.seo_description || post.og_description || description;
-  const canonical = post.canonical_url || blogPostPath(post.slug);
+  const canonical = post.canonical_url
+    ? toAbsoluteUrl(post.canonical_url, siteUrl) || blogPostUrl(siteUrl, post.slug)
+    : blogPostUrl(siteUrl, post.slug);
   const image = toAbsoluteUrl(
-    post.og_image_url || getBlogHeroImageUrl(post),
+    post.og_image_url ||
+      getBlogHeroImageUrl(post) ||
+      siteContent.seo.image?.url ||
+      siteContent.logo?.url ||
+      "/favicon.ico",
     apiBaseUrl,
   ) ?? `${siteUrl}/favicon.ico`;
 
@@ -180,8 +189,8 @@ export async function generateMetadata({
     openGraph: {
       title: post.og_title || metaTitle,
       description: post.og_description || metaDescription,
-      url: blogPostUrl(siteUrl, post.slug),
-      siteName: "انجمن علمی مهندسی کامپیوتر شرق گیلان",
+      url: canonical,
+      siteName: siteContent.official_name,
       type: "article",
       images: [image],
       locale: "fa_IR",
@@ -204,12 +213,22 @@ export default async function BlogDetailPage({
 }) {
   const { slug } = await params;
   const post = await loadPost(normalizeBlogSlugParam(slug));
-  const recommendedPosts = await loadRecommended(post.slug);
+  const [recommendedPosts, siteContent] = await Promise.all([
+    loadRecommended(post.slug),
+    getCmsSiteContent(),
+  ]);
   const headings = extractMarkdownHeadings(post.content);
   const description = cleanText(post.excerpt || post.content).slice(0, 160);
   const metaDescription = post.seo_description || post.og_description || description;
   const coverImage = toAbsoluteUrl(getBlogHeroImageUrl(post), apiBaseUrl);
-  const seoImage = toAbsoluteUrl(post.og_image_url || getBlogHeroImageUrl(post), apiBaseUrl) ?? `${siteUrl}/favicon.ico`;
+  const seoImage = toAbsoluteUrl(
+    post.og_image_url ||
+      getBlogHeroImageUrl(post) ||
+      siteContent.seo.image?.url ||
+      siteContent.logo?.url ||
+      "/favicon.ico",
+    apiBaseUrl,
+  ) ?? `${siteUrl}/favicon.ico`;
   const writers = post.writers?.length ? post.writers : [post.author];
 
   const structuredData = {
@@ -225,14 +244,7 @@ export default async function BlogDetailPage({
       "@type": "Person",
       name: personName(writer),
     })),
-    publisher: {
-      "@type": "Organization",
-      name: "انجمن علمی مهندسی کامپیوتر شرق گیلان",
-      logo: {
-        "@type": "ImageObject",
-        url: `${siteUrl}/favicon.ico`,
-      },
-    },
+    publisher: organizationStructuredData(siteContent),
     keywords: post.tags.map((tag) => tag.name).join(", "),
   };
 
@@ -240,7 +252,7 @@ export default async function BlogDetailPage({
     <div className="min-h-screen bg-[linear-gradient(180deg,hsl(var(--background)),hsl(var(--muted)/0.28))]" dir="rtl">
       <script
         type="application/ld+json"
-        dangerouslySetInnerHTML={{ __html: JSON.stringify(structuredData) }}
+        dangerouslySetInnerHTML={{ __html: safeJsonLd(structuredData) }}
       />
       <div className="container mx-auto px-4 py-8">
         <div className="gap-8 xl:flex xl:items-start">
diff --git a/src/app/blog/page.tsx b/src/app/blog/page.tsx
index 5a72d59..8911b16 100644
--- a/src/app/blog/page.tsx
+++ b/src/app/blog/page.tsx
@@ -1,8 +1,10 @@
 import type { Metadata } from "next";
 import Blog from "@/views/Blog";
 import { getBlogBanners, getBlogFilters, getPublicPosts } from "@/lib/public-api";
+import { blogPostUrl } from "@/lib/blog-routes";
 import { siteUrl } from "@/lib/site";
 import { getCmsPageContent, getCmsSiteContent } from "@/lib/content-cms";
+import { cmsPageMetadata, collectionPageStructuredData, safeJsonLd } from "@/lib/seo";
 
 type SearchParams = Promise<Record<string, string | string[] | undefined>>;
 
@@ -26,25 +28,23 @@ export async function generateMetadata({
     getCmsPageContent("blog"),
     getCmsSiteContent(),
   ]);
-  const title = search ? `جست‌وجوی وبلاگ: ${search}` : content.seo.title || content.title;
-  const description = search ? `نتایج جست‌وجوی مقالات برای ${search}.` : content.seo.description || content.intro;
-  const image = content.seo.image?.url || siteContent.seo.image?.url || siteContent.logo?.url || `${siteUrl}/favicon.ico`;
+  const title = content.seo.title || content.title;
+  const description = content.seo.description || content.intro;
+  const hasFilters = Boolean(
+    search ||
+      firstString(resolved.category).trim() ||
+      stringList(resolved.tag).length ||
+      stringList(resolved.author).length,
+  );
 
-  return {
-    title: { absolute: title },
+  return cmsPageMetadata({
+    title,
     description,
-    alternates: { canonical: search ? `/blog?search=${encodeURIComponent(search)}` : "/blog" },
-    robots: search ? { index: false, follow: true } : undefined,
-    openGraph: {
-      title,
-      description,
-      url: search ? `${siteUrl}/blog?search=${encodeURIComponent(search)}` : `${siteUrl}/blog`,
-      siteName: siteContent.official_name,
-      type: "website",
-      images: [image],
-      locale: "fa_IR",
-    },
-  };
+    image: content.seo.image || siteContent.seo.image || siteContent.logo,
+    path: "/blog",
+    siteName: siteContent.official_name,
+    noIndex: hasFilters,
+  });
 }
 
 export default async function BlogPage({
@@ -57,23 +57,38 @@ export default async function BlogPage({
   const category = firstString(resolved.category).trim();
   const tags = stringList(resolved.tag);
   const authors = stringList(resolved.author);
-  const [posts, banners, filters, content] = await Promise.all([
+  const [posts, banners, filters, content, siteContent] = await Promise.all([
     getPublicPosts({ search: search || undefined, category: category || undefined, tag: tags, author: authors }),
     getBlogBanners().catch(() => []),
     getBlogFilters().catch(() => ({ categories: [], tags: [], authors: [] })),
     getCmsPageContent("blog"),
+    getCmsSiteContent(),
   ]);
+  const structuredData = collectionPageStructuredData({
+    title: content.seo.title || content.title,
+    description: content.seo.description || content.intro,
+    path: "/blog",
+    siteContent,
+    items: posts.map((post) => ({
+      name: post.title,
+      url: blogPostUrl(siteUrl, post.slug),
+      description: post.excerpt || undefined,
+    })),
+  });
 
   return (
-    <Blog
-      content={content}
-      initialPosts={posts}
-      initialSearch={search}
-      initialCategory={category}
-      initialTags={tags}
-      initialAuthors={authors}
-      banners={banners}
-      filters={filters}
-    />
+    <>
+      <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: safeJsonLd(structuredData) }} />
+      <Blog
+        content={content}
+        initialPosts={posts}
+        initialSearch={search}
+        initialCategory={category}
+        initialTags={tags}
+        initialAuthors={authors}
+        banners={banners}
+        filters={filters}
+      />
+    </>
   );
 }
diff --git a/src/app/events/[slug]/page.tsx b/src/app/events/[slug]/page.tsx
index c69c85f..7ec255d 100644
--- a/src/app/events/[slug]/page.tsx
+++ b/src/app/events/[slug]/page.tsx
@@ -2,7 +2,9 @@ import type { Metadata } from "next";
 import { notFound } from "next/navigation";
 import EventDetail from "@/views/EventDetail";
 import { PublicApiError, getPublicEventBySlug } from "@/lib/public-api";
-import { siteUrl } from "@/lib/site";
+import { getCmsPageContent, getCmsSiteContent } from "@/lib/content-cms";
+import { organizationStructuredData, safeJsonLd } from "@/lib/seo";
+import { apiBaseUrl, siteUrl, toAbsoluteUrl } from "@/lib/site";
 import { getEventSeoImageUrl } from "@/lib/utils";
 
 type Params = Promise<{ slug: string }>;
@@ -31,7 +33,19 @@ export async function generateMetadata({
   const { slug } = await params;
   const event = await loadEvent(slug);
   const description = cleanText(event.description).slice(0, 160);
-  const image = getEventSeoImageUrl(event) || `${siteUrl}/favicon.ico`;
+  const [siteContent, eventPageContent] = await Promise.all([
+    getCmsSiteContent(),
+    getCmsPageContent("events"),
+  ]);
+  const image =
+    toAbsoluteUrl(
+      getEventSeoImageUrl(event) ||
+        eventPageContent.seo.image?.url ||
+        siteContent.seo.image?.url ||
+        siteContent.logo?.url ||
+        "/favicon.ico",
+      apiBaseUrl,
+    ) ?? `${siteUrl}/favicon.ico`;
 
   return {
     title: event.title,
@@ -42,7 +56,7 @@ export async function generateMetadata({
       title: event.title,
       description,
       url: `${siteUrl}/events/${event.slug}`,
-      siteName: "انجمن علمی کامپیوتر شرق گیلان",
+      siteName: siteContent.official_name,
       type: "website",
       images: [image],
       locale: "fa_IR",
@@ -62,8 +76,21 @@ export default async function EventDetailPage({
   params: Params;
 }) {
   const { slug } = await params;
-  const event = await loadEvent(slug);
+  const [event, siteContent, eventPageContent] = await Promise.all([
+    loadEvent(slug),
+    getCmsSiteContent(),
+    getCmsPageContent("events"),
+  ]);
   const description = cleanText(event.description).slice(0, 160);
+  const image =
+    toAbsoluteUrl(
+      getEventSeoImageUrl(event) ||
+        eventPageContent.seo.image?.url ||
+        siteContent.seo.image?.url ||
+        siteContent.logo?.url ||
+        "/favicon.ico",
+      apiBaseUrl,
+    ) ?? `${siteUrl}/favicon.ico`;
 
   const structuredData = {
     "@context": "https://schema.org",
@@ -72,32 +99,37 @@ export default async function EventDetailPage({
     description,
     startDate: event.start_time,
     endDate: event.end_time,
-    eventStatus:
-      event.status === "completed"
-        ? "https://schema.org/EventCompleted"
-        : event.status === "cancelled"
-        ? "https://schema.org/EventCancelled"
-        : "https://schema.org/EventScheduled",
+    eventStatus: {
+      published: "https://schema.org/EventScheduled",
+      completed: "https://schema.org/EventCompleted",
+      cancelled: "https://schema.org/EventCancelled",
+      draft: "https://schema.org/EventPostponed",
+    }[event.status] ?? "https://schema.org/EventScheduled",
     eventAttendanceMode:
       event.event_type === "online"
         ? "https://schema.org/OnlineEventAttendanceMode"
         : event.event_type === "on_site"
         ? "https://schema.org/OfflineEventAttendanceMode"
         : "https://schema.org/MixedEventAttendanceMode",
-    image: [getEventSeoImageUrl(event) || `${siteUrl}/favicon.ico`],
+    image: [image],
     url: `${siteUrl}/events/${event.slug}`,
-    organizer: {
-      "@type": "Organization",
-      name: "انجمن علمی کامپیوتر شرق گیلان",
-      url: siteUrl,
-    },
+    organizer: organizationStructuredData(siteContent),
+    location: event.event_type === "online"
+      ? { "@type": "VirtualLocation", url: event.online_link || `${siteUrl}/events/${event.slug}` }
+      : {
+          "@type": "Place",
+          name: event.location || event.address || siteContent.official_name,
+          ...(event.address ? { address: event.address } : {}),
+        },
     offers: {
       "@type": "Offer",
       url: `${siteUrl}/events/${event.slug}`,
       priceCurrency: "IRR",
       price: String(event.price ?? 0),
+      ...(event.registration_start_date ? { validFrom: event.registration_start_date } : {}),
+      ...(event.registration_end_date ? { validThrough: event.registration_end_date } : {}),
       availability:
-        (event.capacity ?? 0) > (event.registration_count ?? 0)
+        event.capacity == null || event.capacity > (event.registration_count ?? 0)
           ? "https://schema.org/InStock"
           : "https://schema.org/SoldOut",
     },
@@ -107,7 +139,7 @@ export default async function EventDetailPage({
     <>
       <script
         type="application/ld+json"
-        dangerouslySetInnerHTML={{ __html: JSON.stringify(structuredData) }}
+        dangerouslySetInnerHTML={{ __html: safeJsonLd(structuredData) }}
       />
       <EventDetail initialEvent={event} />
     </>
diff --git a/src/app/events/page.tsx b/src/app/events/page.tsx
index 464bea1..bcc4f76 100644
--- a/src/app/events/page.tsx
+++ b/src/app/events/page.tsx
@@ -3,6 +3,7 @@ import Events from "@/views/Events";
 import { getPublicEvents } from "@/lib/public-api";
 import { siteUrl } from "@/lib/site";
 import { getCmsPageContent, getCmsSiteContent } from "@/lib/content-cms";
+import { cmsPageMetadata, collectionPageStructuredData, safeJsonLd } from "@/lib/seo";
 
 type SearchParams = Promise<Record<string, string | string[] | undefined>>;
 
@@ -23,23 +24,14 @@ export async function generateMetadata({
   ]);
   const title = search ? `جست‌وجوی رویدادها: ${search}` : content.seo.title || content.title;
   const description = search ? `نتایج جست‌وجوی رویدادها برای ${search}.` : content.seo.description || content.intro;
-  const image = content.seo.image?.url || siteContent.seo.image?.url || siteContent.logo?.url || `${siteUrl}/favicon.ico`;
-
-  return {
-    title: { absolute: title },
+  return cmsPageMetadata({
+    title,
     description,
-    alternates: { canonical: search ? `/events?search=${encodeURIComponent(search)}` : "/events" },
-    robots: search ? { index: false, follow: true } : undefined,
-    openGraph: {
-      title,
-      description,
-      url: search ? `${siteUrl}/events?search=${encodeURIComponent(search)}` : `${siteUrl}/events`,
-      siteName: siteContent.official_name,
-      type: "website",
-      images: [image],
-      locale: "fa_IR",
-    },
-  };
+    image: content.seo.image || siteContent.seo.image || siteContent.logo,
+    path: "/events",
+    siteName: siteContent.official_name,
+    noIndex: Boolean(search),
+  });
 }
 
 export default async function EventsPage({
@@ -54,6 +46,22 @@ export default async function EventsPage({
     getCmsPageContent("events"),
     getCmsSiteContent(),
   ]);
+  const structuredData = collectionPageStructuredData({
+    title: content.seo.title || content.title,
+    description: content.seo.description || content.intro,
+    path: "/events",
+    siteContent,
+    items: events.filter((event) => event.slug).map((event) => ({
+      name: event.title,
+      url: new URL(`/events/${encodeURIComponent(event.slug)}`, siteUrl).toString(),
+      description: event.description,
+    })),
+  });
 
-  return <Events content={content} siteName={siteContent.official_name} initialEvents={events} initialSearch={search} />;
+  return (
+    <>
+      <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: safeJsonLd(structuredData) }} />
+      <Events content={content} initialEvents={events} initialSearch={search} />
+    </>
+  );
 }
diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index d966509..0bbbf23 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -51,12 +51,20 @@ export default async function RootLayout({
     <html lang="fa" dir="rtl" suppressHydrationWarning>
       <body className={`${vazirmatn.variable} font-sans antialiased`}>
         <Providers>
+          <a
+            href="#main-content"
+            className="sr-only focus:not-sr-only focus:absolute focus:right-4 focus:top-4 focus:z-[100] focus:rounded-lg focus:bg-background focus:px-4 focus:py-3 focus:font-semibold focus:text-foreground focus:shadow-lg focus:outline-none focus:ring-2 focus:ring-ring"
+          >
+            رفتن به محتوای اصلی
+          </a>
           <Suspense fallback={null}>
             <RouteProgress />
           </Suspense>
           <Navbar siteContent={siteContent} />
           <div className="min-h-screen pb-28 md:pb-0">
-            {children}
+            <div id="main-content" tabIndex={-1} className="outline-none">
+              {children}
+            </div>
             <Footer siteContent={siteContent} />
           </div>
           <MobileBottomNav siteContent={siteContent} />
diff --git a/src/app/page.tsx b/src/app/page.tsx
index d3c06ec..007b782 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -3,7 +3,7 @@ import Home from "@/views/Home";
 import { getCmsPageContent, getCmsSiteContent } from "@/lib/content-cms";
 import { getPublicEvents, getPublicPosts } from "@/lib/public-api";
 import { selectHomeEvents, selectHomePosts } from "@/lib/home-content";
-import { siteUrl } from "@/lib/site";
+import { cmsPageMetadata, organizationStructuredData, safeJsonLd } from "@/lib/seo";
 
 export const revalidate = 300;
 
@@ -14,23 +14,13 @@ export async function generateMetadata(): Promise<Metadata> {
   ]);
   const title = content.seo.title || content.hero_heading || siteContent.official_name;
   const description = content.seo.description || content.intro;
-  const image = content.seo.image?.url || siteContent.seo.image?.url || `${siteUrl}/favicon.ico`;
-
-  return {
-    title: { absolute: title },
+  return cmsPageMetadata({
+    title,
     description,
-    alternates: { canonical: "/" },
-    openGraph: {
-      title,
-      description,
-      url: siteUrl,
-      siteName: siteContent.official_name,
-      type: "website",
-      images: [image],
-      locale: "fa_IR",
-    },
-    twitter: { card: "summary_large_image", title, description, images: [image] },
-  };
+    image: content.seo.image || siteContent.seo.image || siteContent.logo,
+    path: "/",
+    siteName: siteContent.official_name,
+  });
 }
 
 export default async function HomePage() {
@@ -46,27 +36,15 @@ export default async function HomePage() {
   const description = content.seo.description || content.intro;
   const structuredData = {
     "@context": "https://schema.org",
-    "@type": "Organization",
-    name: siteContent.official_name,
-    url: siteUrl,
-    sameAs: [siteContent.contacts.instagram, siteContent.contacts.telegram].filter(Boolean),
+    ...organizationStructuredData(siteContent),
     description,
-    logo: siteContent.logo?.url || `${siteUrl}/favicon.ico`,
-    contactPoint: siteContent.contacts.email
-      ? {
-          "@type": "ContactPoint",
-          email: siteContent.contacts.email,
-          contactType: "customer support",
-          availableLanguage: ["fa", "en"],
-        }
-      : undefined,
   };
 
   return (
     <>
       <script
         type="application/ld+json"
-        dangerouslySetInnerHTML={{ __html: JSON.stringify(structuredData).replace(/</g, "\\u003c") }}
+        dangerouslySetInnerHTML={{ __html: safeJsonLd(structuredData) }}
       />
       <Home
         content={content}
diff --git a/src/lib/seo.ts b/src/lib/seo.ts
new file mode 100644
index 0000000..b3e8822
--- /dev/null
+++ b/src/lib/seo.ts
@@ -0,0 +1,110 @@
+import type { Metadata } from "next";
+import type { ContentImage, SiteContent } from "@/lib/content-cms";
+import { apiBaseUrl, siteUrl, toAbsoluteUrl } from "@/lib/site";
+
+type CmsPageMetadataOptions = {
+  title: string;
+  description: string;
+  image: ContentImage | null;
+  path: string;
+  siteName: string;
+  noIndex?: boolean;
+};
+
+type CollectionItem = {
+  name: string;
+  url: string;
+  description?: string | null;
+};
+
+export function cmsPageMetadata({
+  title,
+  description,
+  image,
+  path,
+  siteName,
+  noIndex = false,
+}: CmsPageMetadataOptions): Metadata {
+  const canonicalUrl = new URL(path, siteUrl).toString();
+  const imageUrl =
+    toAbsoluteUrl(image?.url, apiBaseUrl) ?? toAbsoluteUrl("/favicon.ico", siteUrl)!;
+
+  return {
+    title: { absolute: title },
+    description,
+    alternates: { canonical: path },
+    robots: noIndex ? { index: false, follow: true } : undefined,
+    openGraph: {
+      title,
+      description,
+      url: canonicalUrl,
+      siteName,
+      type: "website",
+      images: [imageUrl],
+      locale: "fa_IR",
+    },
+    twitter: { card: "summary_large_image", title, description, images: [imageUrl] },
+  };
+}
+
+export function organizationStructuredData(siteContent: SiteContent) {
+  const logo =
+    toAbsoluteUrl(siteContent.logo?.url, apiBaseUrl) ??
+    toAbsoluteUrl("/favicon.ico", siteUrl)!;
+
+  return {
+    "@type": "Organization",
+    name: siteContent.official_name,
+    url: siteUrl,
+    logo,
+    sameAs: [siteContent.contacts.instagram, siteContent.contacts.telegram].filter(Boolean),
+    ...(siteContent.contacts.email
+      ? {
+          contactPoint: {
+            "@type": "ContactPoint",
+            email: siteContent.contacts.email,
+            contactType: "customer support",
+            availableLanguage: ["fa", "en"],
+          },
+        }
+      : {}),
+  };
+}
+
+export function collectionPageStructuredData({
+  title,
+  description,
+  path,
+  siteContent,
+  items,
+}: {
+  title: string;
+  description: string;
+  path: string;
+  siteContent: SiteContent;
+  items: CollectionItem[];
+}) {
+  return {
+    "@context": "https://schema.org",
+    "@type": "CollectionPage",
+    name: title,
+    description,
+    url: new URL(path, siteUrl).toString(),
+    publisher: organizationStructuredData(siteContent),
+    mainEntity: {
+      "@type": "ItemList",
+      numberOfItems: items.length,
+      itemListElement: items.map((item, index) => ({
+        "@type": "ListItem",
+        position: index + 1,
+        name: item.name,
+        url: item.url,
+        ...(item.description ? { description: item.description } : {}),
+      })),
+    },
+  };
+}
+
+export function safeJsonLd(data: unknown) {
+  return JSON.stringify(data).replace(/</g, "\\u003c");
+}
diff --git a/src/views/AboutUs.tsx b/src/views/AboutUs.tsx
index 659e5c3..8f2f807 100644
--- a/src/views/AboutUs.tsx
+++ b/src/views/AboutUs.tsx
@@ -175,19 +175,21 @@ function AssociationHistory({ content }: { content: AboutContentPage }) {
           {content.history_heading}
         </h2>
       </div>
-      <ol className="relative space-y-7 md:space-y-9">
+      <div className="relative">
         <span className="pointer-events-none absolute bottom-1 right-1.5 top-1 w-px bg-primary/25" aria-hidden="true" />
-        {content.milestones.map((milestone, index) => (
-          <li key={`${milestone.year_label}-${milestone.position}-${milestone.title}`} className="relative flex items-start gap-5">
-            <span className={`relative z-10 mt-1.5 h-3 w-3 shrink-0 rounded-full border-2 border-background ${index === content.milestones.length - 1 ? "bg-accent" : "bg-primary"}`} aria-hidden="true" />
-            <div className="min-w-0 flex-1">
-              <p className="mb-2 text-sm font-bold text-primary">{milestone.year_label}</p>
-              <h3 className="text-lg font-bold leading-7 text-foreground">{milestone.title}</h3>
-              <p className="mt-2 max-w-2xl whitespace-pre-line text-sm leading-7 text-muted-foreground">{milestone.description}</p>
-            </div>
-          </li>
-        ))}
-      </ol>
+        <ol className="relative space-y-7 md:space-y-9">
+          {content.milestones.map((milestone, index) => (
+            <li key={`${milestone.year_label}-${milestone.position}-${milestone.title}`} className="relative flex items-start gap-5">
+              <span className={`relative z-10 mt-1.5 h-3 w-3 shrink-0 rounded-full border-2 border-background ${index === content.milestones.length - 1 ? "bg-accent" : "bg-primary"}`} aria-hidden="true" />
+              <div className="min-w-0 flex-1">
+                <p className="mb-2 text-sm font-bold text-primary">{milestone.year_label}</p>
+                <h3 className="text-lg font-bold leading-7 text-foreground">{milestone.title}</h3>
+                <p className="mt-2 max-w-2xl whitespace-pre-line text-sm leading-7 text-muted-foreground">{milestone.description}</p>
+              </div>
+            </li>
+          ))}
+        </ol>
+      </div>
     </section>
   );
 }
diff --git a/src/views/Blog.tsx b/src/views/Blog.tsx
index ee18e03..4f6c055 100644
--- a/src/views/Blog.tsx
+++ b/src/views/Blog.tsx
@@ -344,7 +344,7 @@ export default function Blog({
   );
 
   return (
-    <div className="min-h-screen bg-[linear-gradient(180deg,hsl(var(--background)),hsl(var(--muted)/0.32))]" dir="rtl">
+    <main className="min-h-screen bg-[linear-gradient(180deg,hsl(var(--background)),hsl(var(--muted)/0.32))]" dir="rtl">
       <div className="container mx-auto px-4 py-10">
         <BlogBannerSlider banners={banners} />
 
@@ -359,6 +359,7 @@ export default function Blog({
           <Input
             type="text"
             placeholder="جستجو در نوشته‌ها..."
+            aria-label="جستجو در نوشته‌ها"
             value={searchDraft}
             onChange={(event) => setSearchDraft(event.target.value)}
             className="h-12 flex-1 rounded-2xl bg-background/80 text-right shadow-sm backdrop-blur"
@@ -451,6 +452,6 @@ export default function Blog({
           )}
         </div>
       </div>
-    </div>
+    </main>
   );
 }
diff --git a/src/views/EventDetail.tsx b/src/views/EventDetail.tsx
index dfcc819..65d385a 100644
--- a/src/views/EventDetail.tsx
+++ b/src/views/EventDetail.tsx
@@ -1,7 +1,6 @@
 "use client";
 
 import { useEffect, useMemo, useState } from "react";
-import { Helmet } from "@/lib/helmet";
 import { useNavigate, useParams } from "@/lib/router";
 import { api } from "@/lib/api";
 import type * as Types from "@/lib/types";
@@ -27,7 +26,6 @@ import {
   toPersianDigits,
 } from "@/lib/utils";
 import { useAuth } from "@/contexts/AuthContext";
-import { siteUrl } from "@/lib/site";
 
 const typeLabel: Record<string, string> = {
   online: "آنلاین",
@@ -80,34 +78,6 @@ export default function EventDetail({ initialEvent = null }: EventDetailProps) {
 
   const basePrice = Number(event?.price ?? 0);
   const isFree = useMemo(() => basePrice <= 0, [basePrice]);
-  const siteName = "انجمن علمی کامپیوتر شرق گیلان";
-  const defaultDescription =
-    "جزئیات کامل رویدادهای انجمن علمی کامپیوتر شرق گیلان شامل زمان، مکان و شرایط ثبت‌نام.";
-
-  const toAbsoluteUrl = (value?: string | null) => {
-    if (!value) return undefined;
-    if (value.startsWith("http")) return value;
-    const normalizedSite = siteUrl.endsWith("/") ? siteUrl.slice(0, -1) : siteUrl;
-    const normalizedPath = value.startsWith("/") ? value.slice(1) : value;
-    return `${normalizedSite}/${normalizedPath}`;
-  };
-
-  const sanitizeDescription = (value?: string | null) => {
-    if (!value) return defaultDescription;
-    const stripped = value.replace(/<[^>]*>/g, " ").replace(/\s+/g, " ").trim();
-    if (!stripped) return defaultDescription;
-    if (stripped.length <= 160) return stripped;
-    return `${stripped.slice(0, 157)}...`;
-  };
-
-  const canonicalUrl = event ? `${siteUrl}/events/${event.slug}` : `${siteUrl}/events`;
-  const primaryImage = event
-    ? toAbsoluteUrl(getEventSeoImageUrl(event)) ?? `${siteUrl}/favicon.ico`
-    : `${siteUrl}/favicon.ico`;
-  const pageTitle = event ? `${event.title} | ${siteName}` : `جزئیات رویداد | ${siteName}`;
-  const pageDescription = sanitizeDescription(event?.description);
-  const pageRobots = event?.status === "draft" ? "noindex, nofollow" : "index, follow";
-
   useEffect(() => {
     let cancelled = false;
 
@@ -356,138 +326,19 @@ export default function EventDetail({ initialEvent = null }: EventDetailProps) {
     [event],
   );
 
-  const eventStructuredData = useMemo(() => {
-    if (!event) return null;
-
-    const attendanceModeMap: Record<string, string> = {
-      online: "https://schema.org/OnlineEventAttendanceMode",
-      on_site: "https://schema.org/OfflineEventAttendanceMode",
-      hybrid: "https://schema.org/MixedEventAttendanceMode",
-    };
-
-    const statusMap: Record<string, string> = {
-      published: "https://schema.org/EventScheduled",
-      completed: "https://schema.org/EventCompleted",
-      cancelled: "https://schema.org/EventCancelled",
-      draft: "https://schema.org/EventPostponed",
-    };
-
-    const data: Record<string, unknown> = {
-      "@context": "https://schema.org",
-      "@type": "Event",
-      name: event.title,
-      description: pageDescription,
-      startDate: event.start_time,
-      url: canonicalUrl,
-      eventAttendanceMode: attendanceModeMap[event.event_type] ?? attendanceModeMap.hybrid,
-      eventStatus: statusMap[event.status] ?? statusMap.published,
-      organizer: {
-        "@type": "Organization",
-        name: siteName,
-        url: siteUrl,
-      },
-    };
-
-    if (event.end_time) {
-      data.endDate = event.end_time;
-    }
-
-    if (primaryImage) {
-      data.image = [primaryImage];
-    }
-
-    if (event.event_type === "online") {
-      data.location = {
-        "@type": "VirtualLocation",
-        url: event.online_link || canonicalUrl,
-      };
-    } else {
-      const location: Record<string, unknown> = {
-        "@type": "Place",
-        name: event.location || event.address || siteName,
-      };
-      if (event.address) {
-        location.address = event.address;
-      }
-      if (event.location) {
-        location.description = event.location;
-      }
-      data.location = location;
-    }
-
-    const offers: Record<string, unknown> = {
-      "@type": "Offer",
-      url: canonicalUrl,
-      priceCurrency: "IRR",
-      price: String(event.price ?? 0),
-      availability: meta?.full ? "https://schema.org/SoldOut" : "https://schema.org/InStock",
-    };
-
-    if (event.registration_start_date) {
-      offers.validFrom = event.registration_start_date;
-    }
-    if (event.registration_end_date) {
-      offers.validThrough = event.registration_end_date;
-    }
-
-    data.offers = offers;
-    return data;
-  }, [canonicalUrl, event, meta?.full, pageDescription, primaryImage, siteName]);
-
-  const helmet = (
-    <Helmet>
-      <title>{pageTitle}</title>
-      <meta name="description" content={pageDescription} />
-      <meta name="robots" content={pageRobots} />
-      <link rel="canonical" href={canonicalUrl} />
-      <meta property="og:title" content={pageTitle} />
-      <meta property="og:description" content={pageDescription} />
-      <meta property="og:type" content="event" />
-      <meta property="og:url" content={canonicalUrl} />
-      <meta property="og:site_name" content={siteName} />
-      <meta property="og:image" content={primaryImage} />
-      <meta property="og:locale" content="fa_IR" />
-      {event?.start_time && <meta property="event:start_time" content={event.start_time} />}
-      {event?.end_time && <meta property="event:end_time" content={event.end_time} />}
-      {event?.updated_at && <meta property="og:updated_time" content={event.updated_at} />}
-      <meta name="twitter:card" content="summary_large_image" />
-      <meta name="twitter:title" content={pageTitle} />
-      <meta name="twitter:description" content={pageDescription} />
-      <meta name="twitter:image" content={primaryImage} />
-      {eventStructuredData && (
-        <script type="application/ld+json">{JSON.stringify(eventStructuredData)}</script>
-      )}
-    </Helmet>
-  );
-
-  const withHelmet = (node: JSX.Element) => (
-    <>
-      {helmet}
-      {node}
-    </>
-  );
-
   if (loading) {
-    return withHelmet(
-      <div className="min-h-[60vh] flex items-center justify-center text-muted-foreground">
-        در حال بارگذاری رویداد...
-      </div>,
-    );
+    return <div className="min-h-[60vh] flex items-center justify-center text-muted-foreground">در حال بارگذاری رویداد...</div>;
   }
 
   if (!event) {
-    return withHelmet(
-      <div className="min-h-[60vh] flex items-center justify-center">
-        رویداد مورد نظر یافت نشد.
-      </div>,
-    );
+    return <div className="min-h-[60vh] flex items-center justify-center">رویداد مورد نظر یافت نشد.</div>;
   }
 
   const beforeStart = rsTs != null && nowTs < rsTs;
   const ended = deadlineTs !== null && remainingMs === 0;
   const showCountdown = !beforeStart && deadlineTs !== null && (remainingMs ?? 0) > 0;
 
-  return withHelmet(
+  return (
     <div className="container mx-auto px-4 py-8" dir="rtl">
       {beforeStart && (
         <div className="mb-6">
diff --git a/src/views/Events.tsx b/src/views/Events.tsx
index ca82e28..8c7a9a5 100644
--- a/src/views/Events.tsx
+++ b/src/views/Events.tsx
@@ -1,7 +1,6 @@
 "use client";
 
-import { useCallback, useEffect, useMemo, useState } from "react";
-import { Helmet } from "@/lib/helmet";
+import { useCallback, useEffect, useState } from "react";
 import { Link, useLocation, useNavigate } from "@/lib/router";
 import { api } from "@/lib/api";
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
@@ -11,12 +10,10 @@ import { Button } from "@/components/ui/button";
 import ProgressiveImage from "@/components/ProgressiveImage";
 import type * as Types from "@/lib/types";
 import { formatJalali, formatNumberPersian, formatToman, getEventCardImageUrl } from "@/lib/utils";
-import { siteUrl } from "@/lib/site";
 import type { EventsContentPage } from "@/lib/content-cms";
 
 type EventsProps = {
   content: EventsContentPage;
-  siteName: string;
   initialEvents?: Types.EventListItemSchema[];
   initialSearch?: string;
 };
@@ -53,7 +50,6 @@ function notAvailableReasonFa(event: Types.EventListItemSchema) {
 
 export default function Events({
   content,
-  siteName,
   initialEvents = [],
   initialSearch = "",
 }: EventsProps) {
@@ -63,71 +59,6 @@ export default function Events({
   const [search, setSearch] = useState(initialSearch);
   const [loading, setLoading] = useState(!initialEvents.length && !initialSearch);
 
-  const pageTitle = content.seo.title || content.title;
-  const pageDescription = content.seo.description || content.intro;
-  const canonicalUrl = `${siteUrl}/events`;
-
-  const toAbsoluteUrl = (url?: string | null) => {
-    if (!url) return undefined;
-    if (url.startsWith("http")) return url;
-    const normalizedSite = siteUrl.endsWith("/") ? siteUrl.slice(0, -1) : siteUrl;
-    const normalizedPath = url.startsWith("/") ? url.slice(1) : url;
-    return `${normalizedSite}/${normalizedPath}`;
-  };
-
-  const ogImage = useMemo(() => {
-    if (!events.length) return `${siteUrl}/favicon.ico`;
-    return toAbsoluteUrl(getEventCardImageUrl(events[0])) ?? `${siteUrl}/favicon.ico`;
-  }, [events]);
-
-  const listStructuredData = useMemo(() => {
-    if (!events.length) return null;
-
-    const itemListElement = events.map((eventItem, index) => {
-      const listItem: Record<string, unknown> = {
-        "@type": "ListItem",
-        position: index + 1,
-        url: `${siteUrl}/events/${eventItem.slug}`,
-        name: eventItem.title,
-        description: eventItem.description,
-        startDate: eventItem.start_time,
-      };
-
-      if (eventItem.end_time) {
-        listItem.endDate = eventItem.end_time;
-      }
-
-      const imageUrl = toAbsoluteUrl(getEventCardImageUrl(eventItem));
-      if (imageUrl) {
-        listItem.image = imageUrl;
-      }
-
-      const placeName = eventItem.location || eventItem.address;
-      if (placeName) {
-        const place: Record<string, unknown> = {
-          "@type": "Place",
-          name: placeName,
-        };
-        if (eventItem.address) {
-          place.address = eventItem.address;
-        }
-        listItem.location = place;
-      }
-
-      return listItem;
-    });
-
-    return {
-      "@context": "https://schema.org",
-      "@type": "ItemList",
-      name: pageTitle,
-      description: pageDescription,
-      url: canonicalUrl,
-      numberOfItems: events.length,
-      itemListElement,
-    };
-  }, [canonicalUrl, events, pageDescription, pageTitle]);
-
   useEffect(() => {
     setEvents(initialEvents);
   }, [initialEvents]);
@@ -169,28 +100,7 @@ export default function Events({
   }, [location.pathname, navigate, search]);
 
   return (
-    <>
-      <Helmet>
-        <title>{pageTitle}</title>
-        <meta name="description" content={pageDescription} />
-        <link rel="canonical" href={canonicalUrl} />
-        <meta property="og:title" content={pageTitle} />
-        <meta property="og:description" content={pageDescription} />
-        <meta property="og:type" content="website" />
-        <meta property="og:url" content={canonicalUrl} />
-        <meta property="og:site_name" content={siteName} />
-        <meta property="og:image" content={ogImage} />
-        <meta property="og:locale" content="fa_IR" />
-        <meta name="twitter:card" content="summary_large_image" />
-        <meta name="twitter:title" content={pageTitle} />
-        <meta name="twitter:description" content={pageDescription} />
-        <meta name="twitter:image" content={ogImage} />
-        {listStructuredData && (
-          <script type="application/ld+json">{JSON.stringify(listStructuredData)}</script>
-        )}
-      </Helmet>
-
-      <div className="min-h-screen bg-background" dir="rtl">
+      <main className="min-h-screen bg-background" dir="rtl">
         <div className="container mx-auto px-4 py-8">
           <h1 className="mb-3 text-4xl font-bold">{content.title}</h1>
           {content.intro ? <p className="mb-8 max-w-3xl leading-8 text-muted-foreground">{content.intro}</p> : null}
@@ -199,6 +109,7 @@ export default function Events({
             <Input
               type="text"
               placeholder="جستجو در رویدادها..."
+              aria-label="جستجو در رویدادها"
               value={search}
               onChange={(e) => setSearch(e.target.value)}
               className="max-w-md"
@@ -260,7 +171,6 @@ export default function Events({
             </div>
           )}
         </div>
-      </div>
-    </>
+      </main>
   );
 }