diff --git a/author.hbs b/author.hbs
index 49b9b75d..50eb4e1c 100644
--- a/author.hbs
+++ b/author.hbs
@@ -1,6 +1,6 @@
 {{!< default}}
 
-{{#author}}
+{{#primary_author}}
 
 <header id="blog-header"{{#if cover}} class="has-cover"{{else}}{{#if @blog.cover}} class="has-cover"{{/if}}{{/if}}>
 	<div class="inner">
diff --git a/post.hbs b/post.hbs
index 9f5e9286..b8757885 100644
--- a/post.hbs
+++ b/post.hbs
@@ -62,7 +62,7 @@
 
 				<div class="clear"></div>
 
-				{{#author}}
+				{{#primary_author}}
 				<aside class="post-author">
 					{{#if image}}
 						<figure class="post-author-avatar">
diff --git a/src/sass/style.scss b/src/sass/style.scss
index 0485b457..4f2fcd69 100644
--- a/src/sass/style.scss
+++ b/src/sass/style.scss
@@ -1468,3 +1468,211 @@ img {
 		display: none;
 	}
 }
+
+
+/* ==========================================================================
+   KG Cards
+   ========================================================================== */
+
+.post-content {
+
+	// KG Image
+	.kg-image-card {
+		margin: 0 0 4rem;
+		max-width: none !important;
+
+		&.kg-width-wide {
+			max-width: calc(72rem + 24vw) !important;
+			min-width: 100%;
+			width: calc(100vw - 4rem);
+		}
+
+		&.kg-width-full {
+			max-width: none;
+			width: 100vw;
+			margin-top: 2em;
+		}
+
+		.kg-image {
+			margin: 0 auto;
+		}
+
+		.kg-image-full + figcaption {
+			margin-bottom: 1.33334em;
+		}
+	}
+
+	// KG Gallery
+	.kg-gallery-card {
+		margin: 0 0 4rem;
+		max-width: calc(72rem + 24vw) !important;
+		min-width: 100%;
+		width: calc(100vw - 4rem);
+	}
+
+	.kg-gallery-container {
+		display: flex;
+		flex-direction: column;
+	}
+
+	.kg-gallery-row {
+		display: flex;
+		flex-direction: row;
+		justify-content: center;
+	}
+
+	.kg-gallery-image img {
+		display: block;
+		margin: 0;
+		width: 100%;
+		height: 100%;
+	}
+
+	.kg-gallery-row:not(:first-of-type) {
+		margin: 0.75em 0 0;
+	}
+
+	.kg-gallery-image:not(:first-of-type) {
+		margin: 0 0 0 0.75em;
+	}
+	// KG Embed
+	.kg-embed-card {
+		margin: 0 0 4rem;
+
+		> * {
+			margin-left: auto;
+			margin-right: auto;
+		}
+	}
+	// KG Code
+	.kg-code-card {
+		min-width: 100%;
+		margin: 0 0 4rem;
+	}
+
+	.kg-code-card pre {
+		margin: 0;
+	}
+	// KG Bookmark
+	.kg-bookmark-card {
+		width: 100%;
+		margin: 0 0 4rem;
+	}
+
+	.kg-bookmark-container {
+		display: flex;
+		text-decoration: none;
+		min-height: 8em;
+		background: $color-background;
+		border: 1px solid $color-border;
+		box-shadow: none !important;
+		overflow: hidden;
+		@media (prefers-color-scheme: dark) {
+			background: $color-background-dark;
+			border-color: $color-border-dark;
+		}
+	}
+
+	.kg-bookmark-content {
+		text-rendering: optimizeLegibility;
+		display: flex;
+		flex-direction: column;
+		flex-grow: 1;
+		align-items: flex-start;
+		justify-content: start;
+		padding: 1.5em;
+		color: $color-text-secondary;
+		@media (prefers-color-scheme: dark) {
+			color: $color-text-secondary-dark;
+		}
+	}
+
+	.kg-bookmark-title {
+		color: $color-text-primary;
+		font-size: 0.75em;
+		line-height: 1.66667em;
+		font-weight: 700;
+		letter-spacing: 0.5px;
+		@media (prefers-color-scheme: dark) {
+			color: $color-text-primary-dark;
+		}
+	}
+
+	.kg-bookmark-description {
+		display: -webkit-box;
+		font-size: 0.75em;
+		line-height: 1.66667em;
+		font-weight: 400;
+		margin-top: 0.33334em;
+		max-height: 3.33334em;
+		overflow-y: hidden;
+		-webkit-line-clamp: 2;
+		-webkit-box-orient: vertical;
+	}
+
+	.kg-bookmark-thumbnail {
+		position: relative;
+		min-width: 33%;
+		max-height: 100%;
+	}
+
+	.kg-bookmark-thumbnail img {
+		position: absolute;
+		top: 0;
+		left: 0;
+		width: 100%;
+		height: 100%;
+		object-fit: cover;
+	}
+
+	.kg-bookmark-metadata {
+		text-rendering: optimizeLegibility;
+		display: flex;
+		align-items: center;
+		font-size: 0.75em;
+		line-height: 1.66667em;
+		color: $color-text-primary;
+		font-weight: 400;
+		margin-top: 1em;
+		flex-wrap: wrap;
+		@media (prefers-color-scheme: dark) {
+			color: $color-text-primary-dark;
+		}
+	}
+
+	.kg-bookmark-icon {
+		width: 1.33334em;
+		margin: 0 0.75em 0 0;
+	}
+
+	.kg-bookmark-author:after {
+		content: "•";
+		margin: 0 0.33334em;
+	}
+
+	.kg-bookmark-publisher {
+		color: $color-primary;
+	}
+
+	@media (max-width: 640px) {
+		.kg-bookmark-container {
+			flex-direction: column;
+		}
+
+		.kg-bookmark-thumbnail {
+			order: 1;
+			width: 100%;
+			min-height: 160px;
+		}
+
+		.kg-bookmark-thumbnail img {
+			border-radius: 3px 3px 0 0;
+		}
+
+		.kg-bookmark-content {
+			order: 2;
+		}
+	}
+}
+
+