diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e8801b0..8c2a3062 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+# 5.5.1
+
+- Typographie du socle dans les fragments `theme.json` (`fontSizes` fluid Gutenberg, `fontFamilies` + `fontFace`, `custom.lineHeight`)
+- Polices locales variable woff2 (latin) : Source Sans 3 / Fraunces à la place de Poppins / `@fontsource`
+- Mixins `heading` / `text` branchés sur les tokens SCSS générés (`$settings-font-size-*`, `$settings-font-family-*`, `$settings-custom-line-height-*`)
+- Suppression de l’échelle `--heading--*` / `--paragraph--*` dans `_variables-css.scss` sur ce socle
+- Les projets BFF antérieurs à `5.5.1` conservent leur pipeline typo SCSS ; ne pas migrer automatiquement
+
 # 5.5.0
 
 - Ajout du réglage `is_lcp` à `get_the_image()` (`fetchpriority` élevé, pas de lazy loading ; `decoding` en opt-in via les attributs)
diff --git a/README.md b/README.md
index 1ae9a2db..f0dc9a48 100644
--- a/README.md
+++ b/README.md
@@ -160,6 +160,12 @@ Les fichiers de configuration se trouvent dans le dossier `config`.
 Vous trouverez le fichier de paramètres Webpack communs dans `webpack.common.js`. Pour le mode développement, éditez `webpack.dev.js` ; pour la production, `webpack.prod.js`.
 Les loaders sont dans `loaders.js` et les plugins Webpack dans `plugins.js`.
 
+### Typographie (`theme.json`)
+
+À partir de **BFF 5.5.1**, l’échelle typographique du socle (tailles fluid, familles, `fontFace`, line-heights) vit dans `src/theme-json/` (notamment `typography.json`). Le build régénère `theme.json` et `src/scss/01-abstract/_theme-json.scss` ; les mixins SCSS consomment les variables `$settings-*` générées.
+
+Ne pas éditer à la main les fichiers générés. Sur un projet issu d’un BFF antérieur à **5.5.1** qui garde encore la typo en SCSS / propriétés CSS custom, conserver ce pipeline — ne pas migrer vers les fragments typo uniquement parce que le socle upstream a changé.
+
 ## Comment utiliser BFF ?
 
 Après l’installation des dépendances, vous pouvez exécuter les commandes décrites ci-dessous.
diff --git a/config/webpack-theme-json-plugin.js b/config/webpack-theme-json-plugin.js
index 11f0dc72..fc2ceade 100644
--- a/config/webpack-theme-json-plugin.js
+++ b/config/webpack-theme-json-plugin.js
@@ -122,6 +122,31 @@ class WebpackThemeJsonPlugin {
 
 				return result
 			},
+			'settings-typography-fontSizes'(key, value) {
+				let result = ''
+
+				for (const fontSize of value) {
+					const cssSlug = toPresetCssSlug(fontSize.slug)
+					result += `${getVariableName(
+						'settings-font-size-' + fontSize.slug
+					)}: var(--wp--preset--font-size--${cssSlug});\n`
+				}
+
+				return result
+			},
+			'settings-typography-fontFamilies'(key, value) {
+				let result = ''
+				const families = []
+
+				for (const family of value) {
+					result += `${getVariableName('settings-font-family-' + family.slug)}: var(--wp--preset--font-family--${
+						family.slug
+					});\n`
+					families.push(`${formatMapKey(family.slug)}: ${getVariableName('settings-font-family-' + family.slug)}`)
+				}
+
+				return result + `$settings-font-families: (\n\t${families.join(',\n\t')}\n);\n`
+			},
 		}
 		// eslint-disable-next-line @wordpress/no-unused-vars-before-return
 		const taskNames = Object.keys(tasks)
@@ -141,6 +166,11 @@ class WebpackThemeJsonPlugin {
 			return `$${id.replace(/([A-Z])/g, '-$1').toLowerCase()}`
 		}
 
+		// Match WordPress preset CSS custom property segments (e.g. h1 -> h-1).
+		function toPresetCssSlug(slug) {
+			return String(slug).replace(/([a-zA-Z])(\d)/g, '$1-$2')
+		}
+
 		// Quote map keys so slugs like black/white are strings, not Sass color literals.
 		function formatMapKey(slug) {
 			return JSON.stringify(String(slug))
diff --git a/package-lock.json b/package-lock.json
index 14a46459..5a30be04 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,16 +1,14 @@
 {
   "name": "beapi-frontend-framework",
-  "version": "5.5.0",
+  "version": "5.5.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "beapi-frontend-framework",
-      "version": "5.5.0",
+      "version": "5.5.1",
       "license": "GPL-2.0",
       "dependencies": {
-        "@fontsource-utils/scss": "^0.2.4",
-        "@fontsource/poppins": "^5.3.0",
         "lazysizes": "^5.3.2",
         "oneloop.js": "^5.3.1",
         "swiper": "^14.3.0"
@@ -2118,21 +2116,6 @@
         "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
       }
     },
-    "node_modules/@fontsource-utils/scss": {
-      "version": "0.2.4",
-      "resolved": "https://registry.npmjs.org/@fontsource-utils/scss/-/scss-0.2.4.tgz",
-      "integrity": "sha512-QmfdOQG4jE/LNM7N/i2OGz0MJhizdUkIVwCxT3d1IiFPH1Up9QTS6rtVvnaoYF7CQTnDq5inwNzAhu+tR+rSCQ==",
-      "license": "MIT"
-    },
-    "node_modules/@fontsource/poppins": {
-      "version": "5.3.0",
-      "resolved": "https://registry.npmjs.org/@fontsource/poppins/-/poppins-5.3.0.tgz",
-      "integrity": "sha512-cms1nM7U6SN8epIV1WMVOV8VsA645aSm3wHfzIQnkk188U341ThbJGSl2Sv54V29gnDbT2arMPfLzvVIIVCceQ==",
-      "license": "OFL-1.1",
-      "funding": {
-        "url": "https://github.com/sponsors/ayuhito"
-      }
-    },
     "node_modules/@humanwhocodes/config-array": {
       "version": "0.13.0",
       "dev": true,
diff --git a/package.json b/package.json
index 1f7f73ac..f8e2058d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "beapi-frontend-framework",
-  "version": "5.5.0",
+  "version": "5.5.1",
   "author": "Be API",
   "repository": {
     "type": "git",
@@ -16,8 +16,6 @@
   },
   "license": "GPL-2.0",
   "dependencies": {
-    "@fontsource-utils/scss": "^0.2.4",
-    "@fontsource/poppins": "^5.3.0",
     "lazysizes": "^5.3.2",
     "oneloop.js": "^5.3.1",
     "swiper": "^14.3.0"
@@ -27,8 +25,8 @@
     "@wordpress/browserslist-config": "^6.53.0",
     "@wordpress/dependency-extraction-webpack-plugin": "^6.53.0",
     "@wordpress/dom-ready": "^3.58.0",
-    "@wordpress/i18n": "^4.58.0",
     "@wordpress/hooks": "^3.58.0",
+    "@wordpress/i18n": "^4.58.0",
     "@wordpress/stylelint-config": "^24.2.0",
     "clean-webpack-plugin": "^4.0.0",
     "css-loader": "^7.1.4",
diff --git a/src/fonts/fraunces/fraunces-latin-wght-normal.woff2 b/src/fonts/fraunces/fraunces-latin-wght-normal.woff2
new file mode 100644
index 00000000..32e1ccc8
Binary files /dev/null and b/src/fonts/fraunces/fraunces-latin-wght-normal.woff2 differ
diff --git a/src/fonts/source-sans-3/source-sans-3-latin-wght-normal.woff2 b/src/fonts/source-sans-3/source-sans-3-latin-wght-normal.woff2
new file mode 100644
index 00000000..2622b133
Binary files /dev/null and b/src/fonts/source-sans-3/source-sans-3-latin-wght-normal.woff2 differ
diff --git a/src/scss/01-abstract/_variables.scss b/src/scss/01-abstract/_variables.scss
index ab30e916..a73ad58d 100644
--- a/src/scss/01-abstract/_variables.scss
+++ b/src/scss/01-abstract/_variables.scss
@@ -71,17 +71,18 @@ $base-border-radius: 3px;
 // ----
 // Font Family
 // ----
-$font-family-primary: "Poppins", "Poppins-fallback", sans-serif;
+$font-family-primary: $settings-font-family-primary;
+$font-family-secondary: $settings-font-family-secondary;
 
 // ----
 // Font Size
 // ----
-$font-size-base: var(--paragraph--font-size-default);
-$font-size-sm: var(--paragraph--font-size-small);
-$font-size-lg: var(--paragraph--font-size-large);
-$font-size-xl: var(--paragraph--font-size-huge);
+$font-size-base: $settings-font-size-default;
+$font-size-sm: $settings-font-size-small;
+$font-size-lg: $settings-font-size-large;
+$font-size-xl: $settings-font-size-huge;
 
 // ----
 // Line Height
 // ----
-$line-height-base: var(--paragraph--line-height-default);
+$line-height-base: $settings-custom-line-height-default;
diff --git a/src/scss/02-tools/_m-heading.scss b/src/scss/02-tools/_m-heading.scss
index 5249155a..d327b8a5 100644
--- a/src/scss/02-tools/_m-heading.scss
+++ b/src/scss/02-tools/_m-heading.scss
@@ -1,4 +1,5 @@
 @use "../01-abstract/variables" as *;
+@use "../01-abstract/theme-json" as *;
 
 /**
  * Heading - Used in src/scss/06-blocks/core/_heading.scss
@@ -20,8 +21,8 @@
  *
  *      mixin :
  *      @if $name == h3 {
- *          font-size: var(--heading--font-size-h3);
- *          line-height: var(--heading--line-height-h3);
+ *          font-size: $settings-font-size-h3;
+ *          line-height: $settings-custom-line-height-h3;
  *
  *          @if $style == uppercase {
  *              text-transform: uppercase;
@@ -44,36 +45,41 @@
  */
 
 @mixin heading($name: h1, $style: default) {
-	font-family: $font-family-primary;
-	font-weight: 400;
+	font-family: $font-family-secondary;
 
 	@if $name == h1 {
-		font-size: var(--heading--font-size-h1);
-		line-height: var(--heading--line-height-h1);
+		font-size: $settings-font-size-h1;
+		font-weight: 500;
+		line-height: $settings-custom-line-height-h1;
 	}
 
 	@if $name == h2 {
-		font-size: var(--heading--font-size-h2);
-		line-height: var(--heading--line-height-h2);
+		font-size: $settings-font-size-h2;
+		font-weight: 500;
+		line-height: $settings-custom-line-height-h2;
 	}
 
 	@if $name == h3 {
-		font-size: var(--heading--font-size-h3);
-		line-height: var(--heading--line-height-h3);
+		font-size: $settings-font-size-h3;
+		font-weight: 500;
+		line-height: $settings-custom-line-height-h3;
 	}
 
 	@if $name == h4 {
-		font-size: var(--heading--font-size-h4);
-		line-height: var(--heading--line-height-h4);
+		font-size: $settings-font-size-h4;
+		font-weight: 500;
+		line-height: $settings-custom-line-height-h4;
 	}
 
 	@if $name == h5 {
-		font-size: var(--heading--font-size-h5);
-		line-height: var(--heading--line-height-h5);
+		font-size: $settings-font-size-h5;
+		font-weight: 500;
+		line-height: $settings-custom-line-height-h5;
 	}
 
 	@if $name == h6 {
-		font-size: var(--heading--font-size-h6);
-		line-height: var(--heading--line-height-h6);
+		font-size: $settings-font-size-h6;
+		font-weight: 500;
+		line-height: $settings-custom-line-height-h6;
 	}
 }
diff --git a/src/scss/02-tools/_m-text.scss b/src/scss/02-tools/_m-text.scss
index 845fbd12..40d019fd 100644
--- a/src/scss/02-tools/_m-text.scss
+++ b/src/scss/02-tools/_m-text.scss
@@ -1,3 +1,6 @@
+@use "../01-abstract/variables" as *;
+@use "../01-abstract/theme-json" as *;
+
 /**
  * Text - Used in src/scss/06-blocks/core/_paragraph.scss and src/scss/03-base/_text.scss
  *
@@ -15,26 +18,26 @@
 
 @mixin text($name: default) {
 	@if $name == default {
-		font-size: var(--paragraph--font-size-default);
+		font-size: $settings-font-size-default;
 		font-weight: 400;
-		line-height: var(--paragraph--line-height-default);
+		line-height: $settings-custom-line-height-default;
 	}
 
 	@if $name == small {
-		font-size: var(--paragraph--font-size-small);
+		font-size: $settings-font-size-small;
 		font-weight: 400;
-		line-height: var(--paragraph--line-height-small);
+		line-height: $settings-custom-line-height-default;
 	}
 
 	@if $name == large {
-		font-size: var(--paragraph--font-size-large);
+		font-size: $settings-font-size-large;
 		font-weight: 400;
-		line-height: var(--paragraph--line-height-large);
+		line-height: $settings-custom-line-height-default;
 	}
 
 	@if $name == huge {
-		font-size: var(--paragraph--font-size-huge);
+		font-size: $settings-font-size-huge;
 		font-weight: 400;
-		line-height: var(--paragraph--line-height-huge);
+		line-height: $settings-custom-line-height-default;
 	}
 }
diff --git a/src/scss/03-base/_fonts.scss b/src/scss/03-base/_fonts.scss
index 7195c487..99bb8c1b 100644
--- a/src/scss/03-base/_fonts.scss
+++ b/src/scss/03-base/_fonts.scss
@@ -1,62 +1,24 @@
 /**
- * Fontsource
+ * Web fonts
  *
- * Fonts list : https://fontsource.org/
- * Documentation : https://fontsource.org/docs/getting-started/faces-mixin
+ * Primary @font-face rules are declared in theme.json (fontFamilies.fontFace, variable woff2).
+ * Metric fallbacks for CLS cannot live in theme.json (size-adjust / ascent-override).
  *
- * Examples :
+ * Project fonts: edit src/theme-json/typography.json (fontFace). Edge cases: @mixin declare-font-face in 02-tools.
  *
- *      1 - Install the font and the utilities by the command :
- *          yarn add @fontsource-utils/scss
- *
- *          // For Classic font
- *          yarn add @fontsource/myFont
- *
- *          // For Variable font
- *          yarn add @fontsource-variable/myFont
- *
- *      2 - Declare font-face :
- *          // For Classic font
- *          @use "@fontsource-utils/scss/src/mixins" as fontsource;
- *          @use "@fontsource/myFont/scss/mixins" as MyFont;
- *          @include fontsource.faces($metadata: MyFont.$metadata, $weights: (400, 700));
- *          ...
- *
- *          // For Variable font
- *          @use "@fontsource-utils/scss/src/mixins" as fontsource;
- *          @use "@fontsource-variable/myFont/scss/mixins" as MyFont;
- *          @include fontsource.faces($metadata: MyFont.$metadata, $axes: wght);
- *          ...
+ * @see https://www.industrialempathy.com/perfect-ish-font-fallback/
  */
 
-@use "@fontsource-utils/scss/src/mixins" as fontsource;
-@use "@fontsource/poppins/scss/mixins" as Poppins;
-
-@include fontsource.faces($metadata: Poppins.$metadata, $weights: (300, 400, 500, 700), $styles: normal);
-@include fontsource.faces($metadata: Poppins.$metadata, $weights: (300, 400, 500, 700), $styles: italic);
-
-// Fallbacks for DM Sans  to improve cls
-// https://deploy-preview-15--upbeat-shirley-608546.netlify.app/perfect-ish-font-fallback/?font=Poppins
 @font-face {
-	font-family: Poppins-fallback;
+	font-family: "SourceSans3-fallback";
 	src: local("Arial");
-	size-adjust: 112.5%;
-	ascent-override: 109%;
+	size-adjust: 100%;
+	ascent-override: 105%;
 }
 
-/**
- * Custom font here
- *
- * Examples :
- *
- *      // For Classic font
- *      @include declare-font-face("My classic font", "../fonts/gmy-classic-font-regular", 400);
- *      @include declare-font-face("My classic font", "../fonts/gmy-classic-font-regular-italic", 400, italic);
- *      @include declare-font-face("My classic font", "../fonts/gmy-classic-font-bold", 700);
- *      ...
- *
- *      // For Variable font
- *      @include declare-font-face("My variable font", "../fonts/my-variable-font", 100 950, normal, normal, "woff2-variations");
- *      ...
- *
- */
+@font-face {
+	font-family: Fraunces-fallback;
+	src: local("Georgia");
+	size-adjust: 100%;
+	ascent-override: 95%;
+}
diff --git a/src/scss/03-base/_variables-css.scss b/src/scss/03-base/_variables-css.scss
index 7661591d..1b4c1cb9 100644
--- a/src/scss/03-base/_variables-css.scss
+++ b/src/scss/03-base/_variables-css.scss
@@ -1,6 +1,5 @@
 @use "sass:map";
 @use "../01-abstract/variables" as *;
-@use "../02-tools/f-fluid-size" as *;
 @use "../02-tools/m-breakpoint" as *;
 @use "../02-tools/m-reduced-motion" as *;
 
@@ -10,40 +9,6 @@
 	*/
 	--breakpoint-mobile-to-desktop-nav: #{map.get($breakpoints, mobile-to-desktop-nav)}; // Used by JavaScript
 
-	/*
-     * Heading
-     */
-	// Font size
-	--heading--font-size-h1: #{fluid-size(45px, 56px)};
-	--heading--font-size-h2: #{fluid-size(32px, 48px)};
-	--heading--font-size-h3: #{fluid-size(24px, 36px)};
-	--heading--font-size-h4: #{fluid-size(20px, 32px)};
-	--heading--font-size-h5: #{fluid-size(18px, 24px)};
-	--heading--font-size-h6: #{fluid-size(16px, 18px)};
-
-	// Line height
-	--heading--line-height-h1: 1.25;
-	--heading--line-height-h2: 1.25;
-	--heading--line-height-h3: 1.25;
-	--heading--line-height-h4: 1.25;
-	--heading--line-height-h5: 1.25;
-	--heading--line-height-h6: 1.25;
-
-	/*
-     * paragraph
-    */
-	// Font size
-	--paragraph--font-size-huge: #{fluid-size(28px, 32px)};
-	--paragraph--font-size-large: #{fluid-size(20px, 24px)};
-	--paragraph--font-size-small: #{fluid-size(12px, 14px)};
-	--paragraph--font-size-default: #{fluid-size(14px, 16px)};
-
-	// line height
-	--paragraph--line-height-huge: 1.4;
-	--paragraph--line-height-large: 1.4;
-	--paragraph--line-height-small: 1.4;
-	--paragraph--line-height-default: 1.4;
-
 	/*
      * Admin bar
      */
diff --git a/src/scss/06-blocks/_gutenberg.scss b/src/scss/06-blocks/_gutenberg.scss
index f298bd30..40c9c082 100644
--- a/src/scss/06-blocks/_gutenberg.scss
+++ b/src/scss/06-blocks/_gutenberg.scss
@@ -1,4 +1,5 @@
 @use "../01-abstract/variables" as *;
+@use "../01-abstract/theme-json" as *;
 @use "../02-tools/f-context-selector" as *;
 @use "../02-tools/f-get-gutter-width" as *;
 @use "../02-tools/m-align" as *;
@@ -34,10 +35,10 @@
 .has-drop-cap:not(:focus)::first-letter {
 	float: left;
 	margin: .1em .1em 0 0;
-	font-family: var($font-family-primary);
-	font-size: calc(1.2 * var(--heading--font-size-h1));
+	font-family: $font-family-secondary;
+	font-size: calc(1.2 * #{$settings-font-size-h1});
 	font-style: normal;
-	font-weight: var(--heading--font-weight);
+	font-weight: 400;
 	line-height: .66;
 	text-transform: uppercase;
 }
diff --git a/src/scss/06-blocks/core/_heading.scss b/src/scss/06-blocks/core/_heading.scss
index d5cdeef5..af3e149d 100644
--- a/src/scss/06-blocks/core/_heading.scss
+++ b/src/scss/06-blocks/core/_heading.scss
@@ -5,6 +5,8 @@
  *
  * See https://github.com/BeAPI/beapi-frontend-framework/pull/247 for used heading style variation (depend of projects)
  *
+ * Font size presets (has-h-*-font-size): handled by core global styles from theme.json only.
+ *
  * examples :
  *  $headings: (
  *      "1": (),
@@ -47,9 +49,4 @@ $headings: (
 	.is-style-h#{$i} {
 		@include heading(h#{$i});
 	}
-
-	.has-h-#{$i}-font-size {
-		font-size: var(--heading--font-size-h#{$i});
-		line-height: var(--heading--line-height-h#{$i});
-	}
 }
diff --git a/src/scss/06-blocks/core/_list.scss b/src/scss/06-blocks/core/_list.scss
index e056c54f..31d5847f 100644
--- a/src/scss/06-blocks/core/_list.scss
+++ b/src/scss/06-blocks/core/_list.scss
@@ -35,8 +35,8 @@
 	ul:where(.wp-block-list),
 	ol:where(.wp-block-list) {
 		&:not([class*="no-list-style"]):not([role="list"]):not(.chosen-choices):not(.chosen-results) {
-			font-size: var(--paragraph--font-size-default, $font-size-base);
-			line-height: var(--paragraph--line-height-default, $line-height-base);
+			font-size: $font-size-base;
+			line-height: $line-height-base;
 
 			ul,
 			ol {
diff --git a/src/scss/06-blocks/core/_paragraph.scss b/src/scss/06-blocks/core/_paragraph.scss
index 33791b49..f079ddcc 100644
--- a/src/scss/06-blocks/core/_paragraph.scss
+++ b/src/scss/06-blocks/core/_paragraph.scss
@@ -1,5 +1,12 @@
 @use "../../02-tools/m-text" as *;
 
+/**
+ * Paragraph
+ *
+ * Block styles (is-style-*): full paragraph typography via @include text.
+ * Font size presets (has-*-font-size): core global styles from theme.json only.
+ */
+
 $paragraphs: "default", "small", "large", "huge";
 
 p {
diff --git a/src/theme-json/typography.json b/src/theme-json/typography.json
index d9f5fe51..3fd5efe2 100644
--- a/src/theme-json/typography.json
+++ b/src/theme-json/typography.json
@@ -2,7 +2,136 @@
 	"version": 3,
 	"settings": {
 		"typography": {
-			"fontSizes": [],
+			"fluid": {
+				"minViewportWidth": "480px",
+				"maxViewportWidth": "1440px"
+			},
+			"fontSizes": [
+				{
+					"name": "H1 (45–56px)",
+					"slug": "h1",
+					"size": "56px",
+					"fluid": {
+						"min": "45px",
+						"max": "56px"
+					}
+				},
+				{
+					"name": "H2 (32–48px)",
+					"slug": "h2",
+					"size": "48px",
+					"fluid": {
+						"min": "32px",
+						"max": "48px"
+					}
+				},
+				{
+					"name": "H3 (24–36px)",
+					"slug": "h3",
+					"size": "36px",
+					"fluid": {
+						"min": "24px",
+						"max": "36px"
+					}
+				},
+				{
+					"name": "H4 (20–32px)",
+					"slug": "h4",
+					"size": "32px",
+					"fluid": {
+						"min": "20px",
+						"max": "32px"
+					}
+				},
+				{
+					"name": "H5 (18–24px)",
+					"slug": "h5",
+					"size": "24px",
+					"fluid": {
+						"min": "18px",
+						"max": "24px"
+					}
+				},
+				{
+					"name": "H6 (16–18px)",
+					"slug": "h6",
+					"size": "18px",
+					"fluid": {
+						"min": "16px",
+						"max": "18px"
+					}
+				},
+				{
+					"name": "Huge (28–32px)",
+					"slug": "huge",
+					"size": "32px",
+					"fluid": {
+						"min": "28px",
+						"max": "32px"
+					}
+				},
+				{
+					"name": "Large (20–24px)",
+					"slug": "large",
+					"size": "24px",
+					"fluid": {
+						"min": "20px",
+						"max": "24px"
+					}
+				},
+				{
+					"name": "Small (12–14px)",
+					"slug": "small",
+					"size": "14px",
+					"fluid": {
+						"min": "12px",
+						"max": "14px"
+					}
+				},
+				{
+					"name": "Default (14–16px)",
+					"slug": "default",
+					"size": "16px",
+					"fluid": {
+						"min": "14px",
+						"max": "16px"
+					}
+				}
+			],
+			"fontFamilies": [
+				{
+					"name": "Secondary (Fraunces)",
+					"slug": "secondary",
+					"fontFamily": "\"Fraunces\", Fraunces-fallback, serif",
+					"fontFace": [
+						{
+							"fontFamily": "Fraunces",
+							"fontWeight": "100 900",
+							"fontStyle": "normal",
+							"fontDisplay": "swap",
+							"src": [
+								"file:./src/fonts/fraunces/fraunces-latin-wght-normal.woff2"
+							]
+						}
+					]
+				},
+				{
+					"name": "Primary (Source Sans 3)",
+					"slug": "primary",
+					"fontFamily": "\"Source Sans 3\", SourceSans3-fallback, sans-serif",
+					"fontFace": [
+						{
+							"fontFamily": "Source Sans 3",
+							"fontWeight": "200 900",
+							"fontStyle": "normal",
+							"fontDisplay": "swap",
+							"src": [
+								"file:./src/fonts/source-sans-3/source-sans-3-latin-wght-normal.woff2"
+							]
+						}
+					]
+				}
+			],
 			"defaultFontSizes": false,
 			"customFontSize": false,
 			"dropCap": false,
@@ -11,8 +140,18 @@
 			"lineHeight": false,
 			"letterSpacing": false,
 			"textDecoration": false,
-			"textTransform": false,
-			"fluid": true
+			"textTransform": false
+		},
+		"custom": {
+			"lineHeight": {
+				"h1": "1.1",
+				"h2": "1.15",
+				"h3": "1.2",
+				"h4": "1.25",
+				"h5": "1.3",
+				"h6": "1.35",
+				"default": "1.4"
+			}
 		}
 	}
-}
\ No newline at end of file
+}