Improve SEO content

layouts/partials/seo/seo-config.html

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+{{- /* SEO Configuration Partial */ -}}
+{{- /* This partial includes all SEO-related partials */ -}}
+
+<!-- Core SEO Meta Tags -->
+{{ partial "seo/seo-meta.html" . }}
+
+<!-- Open Graph Tags -->
+{{ partial "seo/opengraph.html" . }}
+
+<!-- Twitter Cards -->
+{{ partial "seo/twitter-cards.html" . }}
+
+<!-- Structured Data (JSON-LD) -->
+{{ partial "seo/structured-data.html" . }}
+
+<!-- Favicons and PWA Support -->
+{{ partial "seo/favicons.html" . }}
+
+<!-- Additional SEO Tags -->
+{{- if .Site.Params.seo.google_verification }}
+<meta name="google-site-verification" content="{{ .Site.Params.seo.google_verification }}">
+{{ end }}
+
+{{- if .Site.Params.seo.bing_verification }}
+<meta name="msvalidate.01" content="{{ .Site.Params.seo.bing_verification }}">
+{{ end }}
+
+{{- if .Site.Params.seo.yandex_verification }}
+<meta name="yandex-verification" content="{{ .Site.Params.seo.yandex_verification }}">
+{{ end }}
+
+{{- if .Site.Params.seo.alexa_verification }}
+<meta name="alexaVerifyID" content="{{ .Site.Params.seo.alexa_verification }}">
+{{ end }}
+
+<!-- hreflang for multilingual sites -->
+{{ range .Translations }}
+<link rel="alternate" hreflang="{{ .Language.Lang }}" href="{{ .Permalink }}">
+{{ end }}
+{{ if .IsTranslated }}
+<link rel="alternate" hreflang="x-default" href="{{ .Permalink }}">
+{{ end }}