{{ if .IsHome -}}
{{ $thumbnail := default (default "brand.svg" .Site.Params.logo) (index (default slice .Site.Params.images) 0) | absURL }}
{{ else if .IsPage }}
{{ $authors := default (slice .Site.Params.GeekblogAuthor) .Params.authors }}
{{ $description := default .Site.Params.description (default .Description .Summary) }}
{{ $ac := 0 }}
{{ $ac_max := default 0 (len $authors) }}
{{ end }}