diff --git a/site/source/components/Notifications.tsx b/site/source/components/Notifications.tsx
index c8aa780ee..9cb4ceecb 100644
--- a/site/source/components/Notifications.tsx
+++ b/site/source/components/Notifications.tsx
@@ -2,7 +2,7 @@ import { hideNotification } from '@/actions/actions'
 import { useEngine, useInversionFail } from '@/components/utils/EngineContext'
 import { Message } from '@/design-system'
 import { Button } from '@/design-system/buttons'
-import { GenericButtonOrLinkProps } from '@/design-system/typography/link'
+import { GenericButtonOrNavLinkProps } from '@/design-system/typography/link'
 import { RootState } from '@/reducers/rootReducer'
 import { DottedName } from 'modele-social'
 import Engine, { RuleNode } from 'publicodes'
@@ -95,7 +95,7 @@ export default function Notifications() {
 	)
 }
 
-const HideButton = styled(Button)<GenericButtonOrLinkProps>`
+const HideButton = styled(Button)<GenericButtonOrNavLinkProps>`
 	&& {
 		display: flex;
 		align-items: center;
diff --git a/site/source/components/RuleLink.tsx b/site/source/components/RuleLink.tsx
index fd65751ca..a40c8507b 100644
--- a/site/source/components/RuleLink.tsx
+++ b/site/source/components/RuleLink.tsx
@@ -2,7 +2,6 @@ import { Link } from '@/design-system/typography/link'
 import { DottedName } from 'modele-social'
 import { RuleLink as EngineRuleLink } from 'publicodes-react'
 import React, { useContext } from 'react'
-import { NavLink } from 'react-router-dom'
 import { EngineContext } from './utils/EngineContext'
 import { SitePathsContext } from './utils/SitePathsContext'
 
diff --git a/site/source/design-system/banner/index.ts b/site/source/design-system/banner/index.ts
index ec41ad8f9..cfb83987d 100644
--- a/site/source/design-system/banner/index.ts
+++ b/site/source/design-system/banner/index.ts
@@ -1,5 +1,5 @@
 import { Button } from '@/design-system/buttons'
-import { GenericButtonOrLinkProps } from '@/design-system/typography/link'
+import { GenericButtonOrNavLinkProps } from '@/design-system/typography/link'
 import styled from 'styled-components'
 
 export const Banner = styled.div`
@@ -23,7 +23,7 @@ export const InnerBanner = styled.div`
 	border-radius: 0.375rem;
 `
 
-export const HideButton = styled(Button)<GenericButtonOrLinkProps>`
+export const HideButton = styled(Button)<GenericButtonOrNavLinkProps>`
 	display: flex;
 	align-items: center;
 	justify-content: center;
diff --git a/site/source/design-system/buttons/Button.tsx b/site/source/design-system/buttons/Button.tsx
index 05b6f6ac1..04bcfa3b8 100644
--- a/site/source/design-system/buttons/Button.tsx
+++ b/site/source/design-system/buttons/Button.tsx
@@ -1,6 +1,6 @@
 import { FocusStyle } from '@/design-system/global-style'
 import {
-	GenericButtonOrLinkProps,
+	GenericButtonOrNavLinkProps,
 	useButtonOrLink,
 } from '@/design-system/typography/link'
 import { wrapperDebounceEvents } from '@/utils'
@@ -10,7 +10,7 @@ import styled, { css } from 'styled-components'
 type Size = 'XL' | 'MD' | 'XS' | 'XXS'
 type Color = 'primary' | 'secondary' | 'tertiary'
 
-type ButtonProps = GenericButtonOrLinkProps & {
+type ButtonProps = GenericButtonOrNavLinkProps & {
 	color?: Color
 	children: React.ReactNode
 	size?: Size
@@ -22,7 +22,6 @@ export const Button = forwardRef(function Button(
 		size = 'MD',
 		light = false,
 		color = 'primary' as const,
-		className,
 		isDisabled,
 		...ariaButtonProps
 	}: ButtonProps,
@@ -36,7 +35,6 @@ export const Button = forwardRef(function Button(
 	return (
 		<StyledButton
 			{...buttonOrLinkProps}
-			className={className}
 			$size={size}
 			$light={light}
 			$color={color}
diff --git a/site/source/design-system/card/Card.tsx b/site/source/design-system/card/Card.tsx
index 23bf334ce..c165d4391 100644
--- a/site/source/design-system/card/Card.tsx
+++ b/site/source/design-system/card/Card.tsx
@@ -2,15 +2,24 @@ import { StyledButton } from '@/design-system/buttons/Button'
 import { FocusStyle } from '@/design-system/global-style'
 import { H3, H4, HeadingUnderline } from '@/design-system/typography/heading'
 import {
-	GenericButtonOrLinkProps,
 	NewWindowLinkIcon,
 	useButtonOrLink,
 	useExternalLinkProps,
 } from '@/design-system/typography/link'
 import { Body } from '@/design-system/typography/paragraphs'
-import React, { ReactHTML, useRef } from 'react'
+import { AriaButtonProps } from '@react-types/button'
+import React, { ComponentPropsWithRef, ReactHTML, useRef } from 'react'
+import { Link as BaseLink } from 'react-router-dom'
 import styled, { css, ThemeProvider } from 'styled-components'
 
+type GenericButtonOrLinkProps = (
+	| AriaButtonProps<'a'>
+	| (AriaButtonProps<typeof BaseLink> & ComponentPropsWithRef<typeof BaseLink>)
+	| AriaButtonProps<'button'>
+) & {
+	openInSameWindow?: true
+}
+
 export type GenericCardProps = {
 	title?: React.ReactNode
 	children?: React.ReactNode
diff --git a/site/source/design-system/typography/link.tsx b/site/source/design-system/typography/link.tsx
index 885ecf7f8..77fb36b8b 100644
--- a/site/source/design-system/typography/link.tsx
+++ b/site/source/design-system/typography/link.tsx
@@ -2,8 +2,8 @@ import { FocusStyle } from '@/design-system/global-style'
 import { useButton } from '@react-aria/button'
 import { AriaButtonProps } from '@react-types/button'
 import React, {
+	ComponentProps,
 	ComponentPropsWithRef,
-	CSSProperties,
 	ForwardedRef,
 	useCallback,
 	useRef,
@@ -59,7 +59,7 @@ export const StyledLink = styled.a<{ $isDisabled?: boolean }>`
 
 export const Link = React.forwardRef<
 	HTMLAnchorElement | HTMLButtonElement,
-	GenericButtonOrLinkProps & {
+	GenericButtonOrNavLinkProps & {
 		children: React.ReactNode
 		isDisabled?: boolean
 	}
@@ -111,22 +111,56 @@ export function useExternalLinkProps({
 	}
 }
 
-export type GenericButtonOrLinkProps = (
+const CustomNavLink = React.forwardRef(function CustomNavLink(
+	props: ComponentProps<typeof NavLink> & {
+		_style?: ComponentProps<typeof NavLink>['style']
+		_className?: ComponentProps<typeof NavLink>['className']
+	},
+	forwardedRef: ForwardedRef<HTMLAnchorElement | null>
+) {
+	const navLinkProps = { ...props }
+	delete navLinkProps._style
+	delete navLinkProps._className
+
+	return (
+		<NavLink
+			{...navLinkProps}
+			style={(...p) => ({
+				...props.style,
+				...(typeof props._style === 'function' && props._style(...p)),
+			})}
+			className={(...p) => {
+				const styledClass =
+					(typeof props.className === 'function'
+						? props.className(...p)
+						: props.className) ?? ''
+
+				const originalClass =
+					(typeof props._className === 'function'
+						? props._className(...p)
+						: props._className) ?? ''
+
+				return styledClass + ' ' + originalClass
+			}}
+			ref={forwardedRef}
+		/>
+	)
+})
+
+export type GenericButtonOrNavLinkProps = (
 	| AriaButtonProps<'a'>
 	| (AriaButtonProps<typeof NavLink> & ComponentPropsWithRef<typeof NavLink>)
 	| AriaButtonProps<'button'>
 ) & {
 	openInSameWindow?: true
-	className?: string
-	style?: CSSProperties
 }
 
 export function useButtonOrLink(
-	props: GenericButtonOrLinkProps,
+	props: GenericButtonOrNavLinkProps,
 	forwardedRef: ForwardedRef<HTMLAnchorElement | HTMLButtonElement | null>
 ) {
-	const elementType: 'a' | 'button' | typeof NavLink =
-		'href' in props ? 'a' : 'to' in props ? NavLink : 'button'
+	const elementType: 'a' | 'button' | typeof CustomNavLink =
+		'href' in props ? 'a' : 'to' in props ? CustomNavLink : 'button'
 
 	const defaultRef = useRef<HTMLAnchorElement | HTMLButtonElement | null>(null)
 	const { buttonProps } = useButton({ elementType, ...props }, defaultRef)
@@ -157,10 +191,24 @@ export function useButtonOrLink(
 		)
 	)
 
+	// resolve conflict between styled-component and NavLink style props
+	const styleProps =
+		'to' in props && typeof props.style === 'function'
+			? { _style: props.style, style: undefined }
+			: {}
+
+	// resolve conflict between styled-component and NavLink classname props
+	const classNameProps =
+		'to' in props && typeof props.className === 'function'
+			? { _className: props.className, className: undefined }
+			: {}
+
 	const buttonOrLinkProps = {
 		...initialProps,
 		...buttonProps,
 		...useExternalLinkProps(props),
+		...classNameProps,
+		...styleProps,
 		as: elementType,
 		ref,
 	}
diff --git a/site/source/pages/Nouveautes/Nouveautes.tsx b/site/source/pages/Nouveautes/Nouveautes.tsx
index bbe1a9b3a..476d44717 100644
--- a/site/source/pages/Nouveautes/Nouveautes.tsx
+++ b/site/source/pages/Nouveautes/Nouveautes.tsx
@@ -8,7 +8,10 @@ import { SitePathsContext } from '@/components/utils/SitePathsContext'
 import { Item, Select } from '@/design-system/field/Select'
 import { Container, Grid } from '@/design-system/layout'
 import { H1 } from '@/design-system/typography/heading'
-import { GenericButtonOrLinkProps, Link } from '@/design-system/typography/link'
+import {
+	GenericButtonOrNavLinkProps,
+	Link,
+} from '@/design-system/typography/link'
 import { Body } from '@/design-system/typography/paragraphs'
 import { useFetchData } from '@/hooks/useFetchData'
 import { useContext, useMemo } from 'react'
@@ -156,7 +159,7 @@ const DesktopGridItem = styled(Grid).attrs({ item: true, lg: 3 })`
 	}
 `
 
-const SidebarLink = styled(Link)<GenericButtonOrLinkProps>`
+const SidebarLink = styled(Link)<GenericButtonOrNavLinkProps>`
 	display: block;
 	border-radius: 0;
 	padding: 0.5rem 1rem;
diff --git a/site/source/pages/Simulateurs/EconomieCollaborative/index.tsx b/site/source/pages/Simulateurs/EconomieCollaborative/index.tsx
index 7b6b66002..8a9a9c35f 100644
--- a/site/source/pages/Simulateurs/EconomieCollaborative/index.tsx
+++ b/site/source/pages/Simulateurs/EconomieCollaborative/index.tsx
@@ -1,6 +1,7 @@
 import { useIsEmbedded } from '@/components/utils/embeddedContext'
 import { SitePathsContext } from '@/components/utils/SitePathsContext'
 import { Link } from '@/design-system/typography/link'
+import { useRelativeSitePaths } from '@/sitePaths'
 import { useContext } from 'react'
 import { Trans } from 'react-i18next'
 import { Route, Routes } from 'react-router-dom'
@@ -12,19 +13,21 @@ import { StoreProvider } from './StoreContext'
 import VotreSituation from './VotreSituation'
 
 export default function ÉconomieCollaborative() {
+	const relativeSitePaths = useRelativeSitePaths()
 	const { économieCollaborative } = useContext(SitePathsContext).simulateurs
 	const iframePath =
 		useSimulatorsData()['économie-collaborative'].iframePath ?? ''
 	const indexPath = useIsEmbedded()
-		? '/iframes/' + iframePath
+		? `/iframes/${iframePath}`
 		: économieCollaborative.index
 
 	return (
 		<TrackChapter chapter1="simulateurs" chapter2="economie_collaborative">
 			<div css="transform: translateY(2rem)">
 				<Link
-					style={({ isActive }) => (isActive ? { display: 'none' } : {})}
 					to={indexPath}
+					end
+					style={({ isActive }) => (isActive ? { display: 'none' } : {})}
 				>
 					←{' '}
 					<Trans i18nKey="économieCollaborative.retourAccueil">
@@ -34,13 +37,11 @@ export default function ÉconomieCollaborative() {
 			</div>
 			<StoreProvider localStorageKey="app::économie-collaborative:v1">
 				<Routes>
-					<Route path={'/'} element={<ActivitésSelection />} />
+					<Route index element={<ActivitésSelection />} />
 					<Route
-						// TODO: react-router 6 use relative path now, we need to get relative path from sitepath instead of this replace
-						path={économieCollaborative.votreSituation.replace(
-							économieCollaborative.index,
-							''
-						)}
+						path={
+							relativeSitePaths.simulateurs.économieCollaborative.votreSituation
+						}
 						element={<VotreSituation />}
 					/>
 					<Route path={':title'} element={<Activité />} />