diff --git a/docs/manual.nix b/docs/manual.nix
index b9f9888..7e1a1e4 100644
--- a/docs/manual.nix
+++ b/docs/manual.nix
@@ -4,6 +4,7 @@
   # build inputs
   nixos-render-docs,
   documentation-highlighter,
+  dart-sass,
   path,
   # nrd configuration
   release,
@@ -18,7 +19,9 @@ in
       path = lib.sourceFilesBySuffices ./manual [".md" ".md.in"];
     };
 
+    strictDependencies = true;
     nativeBuildInputs = [nixos-render-docs];
+    buildInputs = [dart-sass];
 
     postPatch = ''
       ln -s ${optionsJSON}/share/doc/nixos/options.json ./config-options.json
@@ -36,6 +39,7 @@ in
         ${documentation-highlighter}/mono-blue.css \
         ${documentation-highlighter}/loader.js
 
+      # Copy anchor scripts to the script directory in document root.
       cp -vt $dest/script \
         ${./static/script}/anchor-min.js \
         ${./static/script}/anchor-use.js
@@ -44,14 +48,15 @@ in
         --subst-var-by OPTIONS_JSON ./config-options.json
 
       substituteInPlace ./manual.md \
-        --subst-var-by NVF_VERSION ${manual-release} \
-        --subst-var-by NVF_SRC "https://github.com/nvf/blob/${manual-release}"
+        --subst-var-by NVF_VERSION ${manual-release}
 
-      # copy stylesheet
-      cp ${./static/style.css} "$dest/style.css"
+      substituteInPlace ./hacking/additional-plugins.md \
+        --subst-var-by NVF_REPO "https://github.com/nvf/blob/${manual-release}"
 
+      # Compile and copy stylesheet to the project root.
+      sass ${./static/style.css} "$dest/style.css"
 
-      # copy release notes
+      # Move release notes
       cp -vr ${./release-notes} release-notes
 
       # Generate final manual from a set of parameters. Explanation of the CLI flags are
@@ -79,6 +84,7 @@ in
         manual.md \
         "$dest/index.xhtml"
 
+        # Hydra support. Probably not necessary.
         mkdir -p $out/nix-support/
         echo "doc manual $dest index.html" >> $out/nix-support/hydra-build-products
     '';
diff --git a/docs/static/style.css b/docs/static/style.css
deleted file mode 100644
index 3f803f2..0000000
--- a/docs/static/style.css
+++ /dev/null
@@ -1,830 +0,0 @@
-:root {
-	--nmd-color0: #0a3e68;
-	--nmd-color1: #268598;
-	--nmd-color2: #b8d09e;
-	--nmd-color3: #f6cf5e;
-	--nmd-color4: #ec733b;
-	--nmd-color-info: #167cb9;
-	--nmd-color-warn: #ff6700;
-}
-html {
-	-webkit-text-size-adjust: 100%;
-}
-html:focus-within {
-	scroll-behavior: smooth;
-}
-body {
-	-webkit-text-size-adjust: 100%;
-	-moz-text-size-adjust: 100%;
-	text-size-adjust: 100%;
-	-moz-osx-font-smoothing: grayscale;
-	-webkit-font-smoothing: antialiased;
-	min-height: 100vh;
-	position: relative;
-	text-rendering: optimizeSpeed;
-	width: 100%;
-}
-*,
-:after,
-:before {
-	box-sizing: border-box;
-}
-a:not([class]) {
-	-webkit-text-decoration-skip: ink;
-	text-decoration-skip-ink: auto;
-}
-a,
-abbr,
-acronym,
-address,
-applet,
-article,
-aside,
-audio,
-b,
-big,
-blockquote,
-body,
-canvas,
-caption,
-center,
-cite,
-code,
-dd,
-del,
-details,
-dfn,
-div,
-dl,
-dt,
-em,
-embed,
-fieldset,
-figcaption,
-figure,
-footer,
-form,
-h1,
-h2,
-h3,
-h4,
-h5,
-h6,
-header,
-hgroup,
-html,
-i,
-iframe,
-img,
-ins,
-kbd,
-label,
-legend,
-li,
-mark,
-menu,
-nav,
-object,
-ol,
-output,
-p,
-pre,
-q,
-ruby,
-s,
-samp,
-section,
-small,
-span,
-strike,
-strong,
-sub,
-summary,
-sup,
-table,
-tbody,
-td,
-tfoot,
-th,
-thead,
-time,
-tr,
-tt,
-u,
-ul,
-var,
-video {
-	border: 0;
-	font-size: 100%;
-	font: inherit;
-	margin: 0;
-	padding: 0;
-	vertical-align: baseline;
-}
-:focus {
-	outline: 0;
-}
-article,
-aside,
-details,
-figcaption,
-figure,
-footer,
-header,
-hgroup,
-main,
-menu,
-nav,
-section {
-	display: block;
-}
-ol,
-ul {
-	list-style: none;
-}
-blockquote,
-q {
-	quotes: none;
-}
-blockquote:after,
-blockquote:before,
-q:after,
-q:before {
-	content: "";
-	content: none;
-}
-input,
-input:required {
-	box-shadow: none;
-}
-input:-webkit-autofill,
-input:-webkit-autofill:active,
-input:-webkit-autofill:focus,
-input:-webkit-autofill:hover {
-	-webkit-box-shadow: inset 0 0 0 30px #fff;
-}
-input[type="search"]::-webkit-search-cancel-button,
-input[type="search"]::-webkit-search-decoration,
-input[type="search"]::-webkit-search-results-button,
-input[type="search"]::-webkit-search-results-decoration {
-	-webkit-appearance: none;
-	-moz-appearance: none;
-}
-input[type="search"] {
-	-webkit-appearance: none;
-	-moz-appearance: none;
-}
-input:focus {
-	outline: 0;
-}
-audio,
-canvas,
-video {
-	display: inline-block;
-	max-width: 100%;
-}
-audio:not([controls]) {
-	display: none;
-	height: 0;
-}
-[hidden] {
-	display: none;
-}
-a:active,
-a:hover {
-	outline: 0;
-}
-img {
-	height: auto;
-	max-width: 100%;
-	vertical-align: middle;
-}
-img,
-picture {
-	display: inline-block;
-}
-button,
-input {
-	line-height: normal;
-}
-button,
-html input[type="button"],
-input[type="reset"],
-input[type="submit"] {
-	-webkit-appearance: button;
-	background: 0 0;
-	border: 0;
-	cursor: pointer;
-}
-button[disabled],
-html input[disabled] {
-	cursor: default;
-}
-[disabled] {
-	pointer-events: none;
-}
-input[type="checkbox"],
-input[type="radio"] {
-	padding: 0;
-}
-input[type="search"] {
-	-webkit-appearance: textfield;
-	box-sizing: content-box;
-}
-input[type="search"]::-webkit-search-cancel-button,
-input[type="search"]::-webkit-search-decoration {
-	-webkit-appearance: none;
-}
-button::-moz-focus-inner,
-input::-moz-focus-inner {
-	border: 0;
-	padding: 0;
-}
-button {
-	background: 0 0;
-	border: 0;
-}
-textarea {
-	overflow: auto;
-	resize: vertical;
-	vertical-align: top;
-}
-table {
-	border-collapse: collapse;
-	border-spacing: 0;
-	text-indent: 0;
-}
-hr {
-	background: #000;
-	border: 0;
-	box-sizing: content-box;
-	height: 1px;
-	line-height: 0;
-	margin: 0;
-	overflow: visible;
-	padding: 0;
-	page-break-after: always;
-	width: 100%;
-}
-pre {
-	font-family: monospace, monospace;
-	font-size: 100%;
-}
-a {
-	background-color: transparent;
-}
-abbr[title] {
-	border-bottom: none;
-	text-decoration: none;
-}
-code,
-kbd,
-pre,
-samp {
-	font-family: monospace, monospace;
-}
-small,
-sub,
-sup {
-	font-size: 75%;
-}
-sub,
-sup {
-	line-height: 0;
-	position: relative;
-	vertical-align: baseline;
-}
-sub {
-	bottom: -5px;
-}
-sup {
-	top: -5px;
-}
-button,
-input,
-optgroup,
-select,
-textarea {
-	font-family: inherit;
-	font-size: 100%;
-	line-height: 1;
-	margin: 0;
-	padding: 0;
-}
-button,
-input {
-	overflow: visible;
-}
-button,
-select {
-	text-transform: none;
-}
-[type="button"],
-[type="reset"],
-[type="submit"],
-button {
-	-webkit-appearance: button;
-}
-[type="button"]::-moz-focus-inner,
-[type="reset"]::-moz-focus-inner,
-[type="submit"]::-moz-focus-inner,
-button::-moz-focus-inner {
-	border-style: none;
-	outline: 0;
-	padding: 0;
-}
-legend {
-	border: 0;
-	color: inherit;
-	display: block;
-	max-width: 100%;
-	white-space: normal;
-	width: 100%;
-}
-fieldset {
-	min-width: 0;
-}
-body:not(:-moz-handler-blocked) fieldset {
-	display: block;
-}
-progress {
-	vertical-align: baseline;
-}
-[type="number"]::-webkit-inner-spin-button,
-[type="number"]::-webkit-outer-spin-button {
-	height: auto;
-}
-[type="search"] {
-	-webkit-appearance: textfield;
-	outline-offset: -2px;
-}
-[type="search"]::-webkit-search-decoration {
-	-webkit-appearance: none;
-}
-::-webkit-file-upload-button {
-	-webkit-appearance: button;
-	font: inherit;
-}
-summary {
-	display: list-item;
-}
-template {
-	display: none;
-}
-body {
-	background: white;
-	color: #111827;
-	max-width: min(100ch, 1024px);
-	margin: 0 auto;
-	padding: 10px;
-	font-family: "Lucida Sans", Arial, sans-serif;
-	font-size: 16px;
-	line-height: 1.4em;
-}
-@media (prefers-color-scheme: dark) {
-	body {
-		background: #111827;
-		color: #f9fafb;
-	}
-}
-h1,
-h2,
-h3 {
-	color: var(--nmd-color0);
-	font-family: "Lato", sans-serif;
-	font-weight: 300;
-	line-height: 1.125;
-}
-@media (prefers-color-scheme: dark) {
-	h1,
-	h2,
-	h3 {
-		color: var(--nmd-color4);
-	}
-}
-h1 {
-	font-size: 48px;
-	font-weight: 300;
-	margin: 4rem 0 1.5rem;
-}
-h2 {
-	font-size: 32px;
-	font-weight: 300;
-	margin: 2rem 0 1rem;
-}
-h3 {
-	font-size: 20px;
-	font-weight: 400;
-	margin: 0.5rem 0.25rem;
-}
-p {
-	margin: 0.9rem 0;
-}
-p:first-child {
-	margin-top: 0;
-}
-p:last-child {
-	margin-bottom: 0;
-}
-a {
-	color: var(--nmd-color0);
-	text-decoration: underline;
-	text-underline-offset: 3px;
-}
-a:visited {
-	color: var(--nmd-color1);
-}
-a:hover {
-	color: var(--nmd-color1);
-}
-@media (prefers-color-scheme: dark) {
-	a {
-		color: var(--nmd-color3);
-	}
-	a:visited {
-		color: var(--nmd-color2);
-	}
-	a:hover {
-		color: var(--nmd-color4);
-	}
-}
-code {
-	font-size: 90%;
-}
-span.command {
-	font-size: 90%;
-	font-family: monospace;
-}
-em {
-	font-style: italic;
-}
-strong {
-	font-weight: bold;
-}
-pre {
-	background: #f9fafb;
-	margin: 2rem 16px;
-	padding: 10px;
-	border: 1px solid #e5e7eb;
-	border-radius: 4px;
-	box-shadow: 4px 4px 8px #e5e7eb;
-	font-size: 90%;
-	margin-bottom: 1.5rem;
-	padding: 6px;
-	overflow: auto;
-}
-@media (prefers-color-scheme: dark) {
-	pre {
-		background: #1f2937;
-		border-color: black;
-		box-shadow: 4px 4px 8px black;
-	}
-}
-pre span img {
-	user-select: none;
-}
-pre:has(code) {
-	padding: 0;
-}
-td,
-th {
-	padding: 2px 5px;
-}
-td:first-child,
-th:first-child {
-	padding-left: 0;
-}
-td:last-child,
-th:last-child {
-	padding-right: 0;
-}
-dt {
-	margin: 1.2rem 0 0.8rem;
-}
-dd {
-	margin-left: 2rem;
-}
-ul {
-	margin: 0.9rem 0;
-	padding-left: 30px;
-	list-style: disc;
-}
-ul:first-child {
-	margin-top: 0;
-}
-ul:last-child {
-	margin-bottom: 0;
-}
-ol {
-	margin: 0.9rem 0;
-	padding-left: 30px;
-	list-style: decimal;
-}
-ol:first-child {
-	margin-top: 0;
-}
-ol:last-child {
-	margin-bottom: 0;
-}
-li {
-	margin: 0.9rem 0;
-	padding-left: 5px;
-}
-li:first-child {
-	margin-top: 0;
-}
-li:last-child {
-	margin-bottom: 0;
-}
-.navheader hr,
-.navfooter hr {
-	margin: 1rem 0;
-	background: #e5e7eb;
-}
-@media (prefers-color-scheme: dark) {
-	.navheader hr,
-	.navfooter hr {
-		background: #4b5563;
-	}
-}
-.navheader a,
-.navfooter a {
-	text-decoration: none;
-}
-div.titlepage {
-	margin: 40px 0;
-}
-div.titlepage hr {
-	display: none;
-}
-div.toc {
-	background: #f9fafb;
-	margin: 2rem 16px;
-	padding: 10px;
-	border: 1px solid #e5e7eb;
-	border-radius: 4px;
-	box-shadow: 4px 4px 8px #e5e7eb;
-}
-@media (prefers-color-scheme: dark) {
-	div.toc {
-		background: #1f2937;
-		border-color: black;
-		box-shadow: 4px 4px 8px black;
-	}
-}
-div.toc a {
-	text-decoration: none;
-}
-div.note,
-div.warning {
-	background: #f9fafb;
-	margin: 2rem 16px;
-	padding: 10px;
-	border: 1px solid #e5e7eb;
-	border-radius: 4px;
-	box-shadow: 4px 4px 8px #e5e7eb;
-	font-style: italic;
-}
-@media (prefers-color-scheme: dark) {
-	div.note,
-	div.warning {
-		background: #1f2937;
-		border-color: black;
-		box-shadow: 4px 4px 8px black;
-	}
-}
-div.note h3,
-div.warning h3 {
-	float: right;
-	margin: 0 0 1rem 1rem;
-	width: 42px;
-	height: 42px;
-	content: url();
-}
-div.note h3 + p,
-div.warning h3 + p {
-	margin-top: 0;
-}
-div.note h3 {
-	background-color: var(--nmd-color-info);
-	mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='42' height='42' viewBox='0 0 24 24' stroke-width='2' stroke='black' fill='none' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath stroke='none' d='M0 0h24v24H0z' fill='none'%3E%3C/path%3E%3Cpath d='M12 8h.01'%3E%3C/path%3E%3Cpath d='M11 12h1v4h1'%3E%3C/path%3E%3Cpath d='M12 3c7.2 0 9 1.8 9 9s-1.8 9 -9 9s-9 -1.8 -9 -9s1.8 -9 9 -9z'%3E%3C/path%3E%3C/svg%3E");
-	-webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='42' height='42' viewBox='0 0 24 24' stroke-width='2' stroke='black' fill='none' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath stroke='none' d='M0 0h24v24H0z' fill='none'%3E%3C/path%3E%3Cpath d='M12 8h.01'%3E%3C/path%3E%3Cpath d='M11 12h1v4h1'%3E%3C/path%3E%3Cpath d='M12 3c7.2 0 9 1.8 9 9s-1.8 9 -9 9s-9 -1.8 -9 -9s1.8 -9 9 -9z'%3E%3C/path%3E%3C/svg%3E");
-}
-div.warning h3 {
-	background-color: var(--nmd-color-warn);
-	mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='42' height='42' viewBox='0 0 24 24' stroke-width='2' stroke='black' fill='none' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath stroke='none' d='M0 0h24v24H0z' fill='none'%3E%3C/path%3E%3Cpath d='M12 9v2m0 4v.01'%3E%3C/path%3E%3Cpath d='M5 19h14a2 2 0 0 0 1.84 -2.75l-7.1 -12.25a2 2 0 0 0 -3.5 0l-7.1 12.25a2 2 0 0 0 1.75 2.75'%3E%3C/path%3E%3C/svg%3E");
-	-webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='42' height='42' viewBox='0 0 24 24' stroke-width='2' stroke='black' fill='none' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath stroke='none' d='M0 0h24v24H0z' fill='none'%3E%3C/path%3E%3Cpath d='M12 9v2m0 4v.01'%3E%3C/path%3E%3Cpath d='M5 19h14a2 2 0 0 0 1.84 -2.75l-7.1 -12.25a2 2 0 0 0 -3.5 0l-7.1 12.25a2 2 0 0 0 1.75 2.75'%3E%3C/path%3E%3C/svg%3E");
-}
-.term {
-	font-weight: 300;
-}
-.docbook .xref img[src^="images\/callouts\/"],
-.screen img,
-.programlisting img {
-	width: 1em;
-}
-.calloutlist img {
-	width: 1.3em;
-}
-.programlisting.language-shell .hljs-meta.prompt_ {
-	user-select: none;
-} /*!
-  Theme: Tomorrow
-  Author: Chris Kempson (http://chriskempson.com)
-  License: ~ MIT (or more permissive) [via base16-schemes-source]
-  Maintainer: @highlightjs/core-team
-  Version: 2021.09.0
-*/
-pre code.hljs {
-	display: block;
-	overflow-x: auto;
-	padding: 1em;
-}
-code.hljs {
-	padding: 3px 5px;
-}
-.hljs {
-	color: #4d4d4c;
-	background: #fff;
-}
-.hljs ::selection,
-.hljs::selection {
-	background-color: #d6d6d6;
-	color: #4d4d4c;
-}
-.hljs-comment {
-	color: #8e908c;
-}
-.hljs-tag {
-	color: #969896;
-}
-.hljs-operator,
-.hljs-punctuation,
-.hljs-subst {
-	color: #4d4d4c;
-}
-.hljs-operator {
-	opacity: 0.7;
-}
-.hljs-bullet,
-.hljs-deletion,
-.hljs-name,
-.hljs-selector-tag,
-.hljs-template-variable,
-.hljs-variable {
-	color: #c82829;
-}
-.hljs-attr,
-.hljs-link,
-.hljs-literal,
-.hljs-number,
-.hljs-symbol,
-.hljs-variable.constant_ {
-	color: #f5871f;
-}
-.hljs-class .hljs-title,
-.hljs-title,
-.hljs-title.class_ {
-	color: #eab700;
-}
-.hljs-strong {
-	font-weight: 700;
-	color: #eab700;
-}
-.hljs-addition,
-.hljs-code,
-.hljs-string,
-.hljs-title.class_.inherited__ {
-	color: #718c00;
-}
-.hljs-built_in,
-.hljs-doctag,
-.hljs-keyword.hljs-atrule,
-.hljs-quote,
-.hljs-regexp {
-	color: #3e999f;
-}
-.hljs-attribute,
-.hljs-function .hljs-title,
-.hljs-section,
-.hljs-title.function_,
-.ruby .hljs-property {
-	color: #4271ae;
-}
-.diff .hljs-meta,
-.hljs-keyword,
-.hljs-template-tag,
-.hljs-type {
-	color: #8959a8;
-}
-.hljs-emphasis {
-	color: #8959a8;
-	font-style: italic;
-}
-.hljs-meta,
-.hljs-meta .hljs-keyword,
-.hljs-meta .hljs-string {
-	color: #a3685a;
-}
-.hljs-meta .hljs-keyword,
-.hljs-meta-keyword {
-	font-weight: 700;
-}
-@media (prefers-color-scheme: dark) {
-	/*!  Theme: Tomorrow Night  Author: Chris Kempson (http://chriskempson.com)  License: ~ MIT (or more permissive) [via base16-schemes-source]  Maintainer: @highlightjs/core-team  Version: 2021.09.0*/
-	pre code.hljs {
-		display: block;
-		overflow-x: auto;
-		padding: 1em;
-	}
-	code.hljs {
-		padding: 3px 5px;
-	}
-	.hljs {
-		color: #ccc;
-		background: #2d2d2d;
-	}
-	.hljs ::selection,
-	.hljs::selection {
-		background-color: #515151;
-		color: #ccc;
-	}
-	.hljs-comment {
-		color: #999;
-	}
-	.hljs-tag {
-		color: #b4b7b4;
-	}
-	.hljs-operator,
-	.hljs-punctuation,
-	.hljs-subst {
-		color: #ccc;
-	}
-	.hljs-operator {
-		opacity: 0.7;
-	}
-	.hljs-bullet,
-	.hljs-deletion,
-	.hljs-name,
-	.hljs-selector-tag,
-	.hljs-template-variable,
-	.hljs-variable {
-		color: #f2777a;
-	}
-	.hljs-attr,
-	.hljs-link,
-	.hljs-literal,
-	.hljs-number,
-	.hljs-symbol,
-	.hljs-variable.constant_ {
-		color: #f99157;
-	}
-	.hljs-class .hljs-title,
-	.hljs-title,
-	.hljs-title.class_ {
-		color: #fc6;
-	}
-	.hljs-strong {
-		font-weight: 700;
-		color: #fc6;
-	}
-	.hljs-addition,
-	.hljs-code,
-	.hljs-string,
-	.hljs-title.class_.inherited__ {
-		color: #9c9;
-	}
-	.hljs-built_in,
-	.hljs-doctag,
-	.hljs-keyword.hljs-atrule,
-	.hljs-quote,
-	.hljs-regexp {
-		color: #6cc;
-	}
-	.hljs-attribute,
-	.hljs-function .hljs-title,
-	.hljs-section,
-	.hljs-title.function_,
-	.ruby .hljs-property {
-		color: #69c;
-	}
-	.diff .hljs-meta,
-	.hljs-keyword,
-	.hljs-template-tag,
-	.hljs-type {
-		color: #c9c;
-	}
-	.hljs-emphasis {
-		color: #c9c;
-		font-style: italic;
-	}
-	.hljs-meta,
-	.hljs-meta .hljs-keyword,
-	.hljs-meta .hljs-string {
-		color: #a3685a;
-	}
-	.hljs-meta .hljs-keyword,
-	.hljs-meta-keyword {
-		font-weight: 700;
-	}
-}