diff --git a/assets/css/v2-bifurcation.css b/assets/css/v2-bifurcation.css
new file mode 100644
index 0000000..3d6ca22
--- /dev/null
+++ b/assets/css/v2-bifurcation.css
@@ -0,0 +1,23 @@
+/* Palette familles V2 - variables locales, ne pas toucher --nav-* */
+:root {
+  --bifurc-color-f1: #a85d3e;   /* Réemploi & filières - terracotta */
+  --bifurc-color-f2: #c4a472;   /* Frugalité & low-tech - terre crue */
+  --bifurc-color-f3: #d4a017;   /* Architecture sociale - ocre */
+  --bifurc-color-f4: #5a7a4a;   /* Collectifs & AMO - vert mousse */
+  --bifurc-color-f5: #3d6a8c;   /* Urbanisme transition - bleu profond */
+
+  --bifurc-badge-f6: #6b3fa0;   /* Recherche politique - violet */
+  --bifurc-badge-cr: #2d8a6b;   /* Centre ressources - vert foncé */
+  --bifurc-badge-mm: #c44a2f;   /* Mouvement manifeste - rouge brique */
+  --bifurc-badge-cp: #1a3a6b;   /* Contre-pouvoir - bleu nuit */
+
+  --bifurc-banner-bg: #faf8f5;
+  --bifurc-banner-border: #e0d8cc;
+  --bifurc-banner-text: #2c2416;
+}
+
+.bifurc-pin-f1 { background: var(--bifurc-color-f1); }
+.bifurc-pin-f2 { background: var(--bifurc-color-f2); }
+.bifurc-pin-f3 { background: var(--bifurc-color-f3); }
+.bifurc-pin-f4 { background: var(--bifurc-color-f4); }
+.bifurc-pin-f5 { background: var(--bifurc-color-f5); }
diff --git a/components/ChatbotPlaceholder.vue b/components/ChatbotPlaceholder.vue
index 00cdf6e..1f0e294 100644
--- a/components/ChatbotPlaceholder.vue
+++ b/components/ChatbotPlaceholder.vue
@@ -52,18 +52,9 @@
       <div class="chatbot-body-inner" ref="messagesContainer">
         <!-- Onboarding -->
         <div v-if="messages.length === 0" class="onboarding-bubble">
-          <p>Ce chatbot fonctionne sur un serveur européen souverain
-(Mistral FR, zéro rétention), conçu sobre en énergie.</p>
-          <p>Pour m'aider à te répondre efficacement,
-formule ta requête ainsi :</p>
-          <ul>
-            <li>• Besoin : [ce que tu cherches]</li>
-            <li>• Thématique : [juridique / technique / économique / ...]</li>
-            <li>• Lieu : [région ou ville]</li>
-          </ul>
-          <p class="example">Exemple : "Je suis salarié d'agence, litige avec mon
-employeur, besoin conseil juridique droit du travail,
-Île-de-France."</p>
+          <p>Explore les 120 structures de la carte par la conversation. Je peux t'aider à trouver des collectifs, agences ou réseaux selon ta situation, ta pratique ou tes inspirations du moment.</p>
+          <p class="example">Exemple : "Je cherche des acteurs de la rénovation de maisons individuelles en France, plutôt en milieu rural, avec des approches biosourcées ou low-tech."</p>
+          <p style="margin-top: 8px; font-size: 0.72rem; opacity: 0.6;">Propulsé par Mistral FR - serveur européen souverain, zéro rétention.</p>
         </div>
 
         <!-- Messages -->
@@ -72,7 +63,7 @@ employeur, besoin conseil juridique droit du travail,
           <div v-else class="assistant-bubble">
             <p>{{ msg.content }}</p>
             <div v-if="msg.fiches && msg.fiches.length > 0" class="fiches-list">
-              <p class="fiches-title">Fiches recommandées :</p>
+              <p class="fiches-title">Fiches recommandees :</p>
               <a
                 v-for="fiche in msg.fiches"
                 :key="fiche.id"
@@ -83,6 +74,21 @@ employeur, besoin conseil juridique droit du travail,
                 <span v-if="fiche.explication" class="fiche-expl">{{ fiche.explication }}</span>
               </a>
             </div>
+            <div v-if="msg.suggestedHashtags && msg.suggestedHashtags.length" style="margin-top: 8px;">
+              <p style="font-size: 0.7rem; color: var(--nav-text-muted); margin-bottom: 4px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;">Filtrer par :</p>
+              <div style="display: flex; flex-wrap: wrap; gap: 4px;">
+                <span
+                  v-for="tag in msg.suggestedHashtags"
+                  :key="tag"
+                  style="
+                    padding: 2px 8px; border-radius: 9999px; font-size: 0.7rem; cursor: pointer;
+                    background: var(--nav-bg-alt); color: var(--nav-text); border: 1px solid var(--nav-bg-alt);
+                    transition: all 0.15s;
+                  "
+                  @click="emit('applyHashtag', tag)"
+                >{{ tag }}</span>
+              </div>
+            </div>
           </div>
         </template>
 
@@ -132,10 +138,12 @@ interface ChatMessage {
   role: 'user' | 'assistant'
   content: string
   fiches?: FicheReco[]
+  suggestedHashtags?: string[]
 }
 
 const emit = defineEmits<{
   'highlightOrgs': [ids: (number | string)[]]
+  'applyHashtag': [tag: string]
 }>()
 
 const isExpanded = ref(false)
@@ -145,6 +153,37 @@ const loading = ref(false)
 const errorMsg = ref('')
 const messagesContainer = ref<HTMLElement | null>(null)
 
+// Detection hashtags depuis la question posee
+const HASHTAG_KEYWORDS: Record<string, string[]> = {
+  '#reemploi-structurel': ['reemploi', 'materiaux recuperes', 'deconstruction', 'reemploi structurel'],
+  '#reemploi-second-oeuvre': ['revetement', 'second oeuvre', 'reemploi'],
+  '#biosource-geosource': ['biosource', 'geosource', 'paille', 'terre', 'chanvre', 'lin', 'biosource'],
+  '#low-tech-experimentation': ['low-tech', 'low tech', 'technique simple', 'autonomie', 'lowtech'],
+  '#chantier-ecole': ['formation', 'chantier ecole', 'chantier-ecole', 'apprendre', 'auto-construction', 'autoconstruction'],
+  '#sobriete-energetique': ['sobriete', 'energie', 'renovation energetique', 'isolation', 'chauffage', 'economie energie'],
+  '#mal-logement-precarite': ['mal-logement', 'precarite', 'sans-abri', 'logement social', 'squat', 'mal logement'],
+  '#tiers-lieux-friches': ['friche', 'tiers-lieu', 'tiers lieu', 'espace intermediaire', 'temporaire', 'reconversion'],
+  '#accompagnement-cooperatif': ['cooperative', 'accompagnement', 'cooperation', 'collectif', 'mutualisation'],
+  '#transition-energetique-territoriale': ['territoire', 'transition', 'energetique', 'local', 'region', 'transition energetique'],
+  '#communs-fonciers': ['communs', 'foncier', 'anti-speculatif', 'community land trust', 'commun foncier'],
+  '#hack-juridique': ['juridique', 'montage', 'structure legale', 'sci', 'cooperative', 'statut'],
+  '#retrofit-strates': ['retrofit', 'renovation lourde', 'sur-isolation', 'rehaussement'],
+  '#phytoconstruction': ['plantes', 'vegetal', 'arbre', 'construction vivante', 'phyto'],
+}
+
+function detectHashtagsFromQuery(query: string): string[] {
+  const q = query.toLowerCase()
+    .normalize('NFD')
+    .replace(/[̀-ͯ]/g, '')
+  const detected: string[] = []
+  for (const [hashtag, keywords] of Object.entries(HASHTAG_KEYWORDS)) {
+    if (keywords.some(kw => q.includes(kw))) {
+      detected.push(hashtag)
+    }
+  }
+  return detected.slice(0, 3)
+}
+
 function toggleExpand() {
   isExpanded.value = !isExpanded.value
 }
@@ -170,10 +209,12 @@ async function sendMessage() {
       body: { question },
     })
 
+    const suggestedHashtags = detectHashtagsFromQuery(question)
     const assistantMsg: ChatMessage = {
       role: 'assistant',
       content: res.reponse_texte,
       fiches: res.fiches_recommandees || [],
+      suggestedHashtags: suggestedHashtags.length ? suggestedHashtags : undefined,
     }
     messages.value.push(assistantMsg)
 
diff --git a/components/FicheFamilleModal.vue b/components/FicheFamilleModal.vue
new file mode 100644
index 0000000..2d56e53
--- /dev/null
+++ b/components/FicheFamilleModal.vue
@@ -0,0 +1,284 @@
+<template>
+  <Teleport to="body">
+    <!-- Backdrop -->
+    <Transition name="backdrop">
+      <div
+        v-if="modelValue && familleId != null"
+        class="fixed inset-0 z-[1400]"
+        style="background: rgba(26,34,56,0.55);"
+        @click="close"
+        aria-hidden="true"
+      />
+    </Transition>
+
+    <!-- Modal -->
+    <Transition name="modal">
+      <div
+        v-if="modelValue && familleId != null"
+        class="fixed z-[1401] top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 flex flex-col"
+        style="
+          width: min(720px, 94vw);
+          max-height: 88vh;
+          background: var(--nav-bg);
+          border-radius: 16px;
+          box-shadow: 0 16px 64px rgba(26,34,56,0.28);
+          overflow: hidden;
+        "
+        role="dialog"
+        aria-modal="true"
+        :aria-label="familleLabel"
+        @keydown.esc="close"
+      >
+        <!-- Header : background couleur famille -->
+        <div
+          class="flex items-center justify-between px-5 py-4 shrink-0"
+          :style="`background: ${familleColor}; color: white;`"
+        >
+          <div class="flex items-center gap-3">
+            <div
+              class="w-3 h-3 rounded-full shrink-0"
+              style="background: white;"
+            />
+            <h2 class="text-lg font-bold" style="color: white;">{{ familleLabel }}</h2>
+          </div>
+          <button
+            @click="close"
+            class="w-8 h-8 rounded-lg flex items-center justify-center transition-colors"
+            style="background: rgba(255,255,255,0.18); color: white;"
+            aria-label="Fermer"
+          >
+            <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" aria-hidden="true">
+              <line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/>
+            </svg>
+          </button>
+        </div>
+
+        <!-- Body scrollable -->
+        <div class="flex-1 overflow-y-auto px-5 py-5">
+          <!-- Description longue editoriale -->
+          <p
+            class="text-sm leading-relaxed mb-5"
+            style="color: var(--nav-text); white-space: pre-wrap;"
+          >{{ familleDescription }}</p>
+
+          <!-- Separateur -->
+          <div style="height: 1px; background: var(--nav-bg-alt); margin-bottom: 16px;" />
+
+          <!-- Mode fusion : Principal+Secondaire melanges (peu de secondaires) -->
+          <template v-if="!showSplit">
+            <h3
+              class="text-xs font-bold uppercase tracking-wide mb-3"
+              style="color: var(--nav-text-muted);"
+            >{{ allStructures.length }} structure{{ allStructures.length > 1 ? 's' : '' }}</h3>
+            <ul style="list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px;">
+              <li
+                v-for="s in allStructures"
+                :key="s.id"
+                @click="selectStructure(s.id)"
+                class="structure-row"
+                style="
+                  display: flex; align-items: center; gap: 10px;
+                  padding: 8px 10px; border-radius: 6px;
+                  cursor: pointer; transition: background 0.1s;
+                "
+              >
+                <span
+                  style="width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0;"
+                  :style="`background: ${FAMILLE_COLORS[s.famille_principale] ?? '#888'};`"
+                  :title="`Famille principale : ${FAMILLE_LABELS[s.famille_principale] ?? ''}`"
+                />
+                <span class="text-sm font-medium" style="color: var(--nav-text);">{{ s.nom }}</span>
+                <span class="text-xs" style="color: var(--nav-text-muted);">{{ s.ville }}</span>
+              </li>
+            </ul>
+          </template>
+
+          <!-- Mode split : Principal / Secondaire separes -->
+          <template v-else>
+            <div v-if="principalStructures.length" class="mb-5">
+              <h3
+                class="text-xs font-bold uppercase tracking-wide mb-3"
+                style="color: var(--nav-text-muted);"
+              >Principal ({{ principalStructures.length }})</h3>
+              <ul style="list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px;">
+                <li
+                  v-for="s in principalStructures"
+                  :key="s.id"
+                  @click="selectStructure(s.id)"
+                  class="structure-row"
+                  style="
+                    display: flex; align-items: center; gap: 10px;
+                    padding: 8px 10px; border-radius: 6px;
+                    cursor: pointer; transition: background 0.1s;
+                  "
+                >
+                  <span
+                    style="width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0;"
+                    :style="`background: ${FAMILLE_COLORS[s.famille_principale] ?? '#888'};`"
+                  />
+                  <span class="text-sm font-medium" style="color: var(--nav-text);">{{ s.nom }}</span>
+                  <span class="text-xs" style="color: var(--nav-text-muted);">{{ s.ville }}</span>
+                </li>
+              </ul>
+            </div>
+
+            <div v-if="secondaireStructures.length">
+              <h3
+                class="text-xs font-bold uppercase tracking-wide mb-3"
+                style="color: var(--nav-text-muted);"
+              >Secondaire ({{ secondaireStructures.length }})</h3>
+              <ul style="list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px;">
+                <li
+                  v-for="s in secondaireStructures"
+                  :key="s.id"
+                  @click="selectStructure(s.id)"
+                  class="structure-row"
+                  style="
+                    display: flex; align-items: center; gap: 10px;
+                    padding: 8px 10px; border-radius: 6px;
+                    cursor: pointer; transition: background 0.1s;
+                  "
+                >
+                  <span
+                    style="width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0;"
+                    :style="`background: ${FAMILLE_COLORS[s.famille_principale] ?? '#888'};`"
+                    :title="`Famille principale : ${FAMILLE_LABELS[s.famille_principale] ?? ''}`"
+                  />
+                  <span class="text-sm font-medium" style="color: var(--nav-text);">{{ s.nom }}</span>
+                  <span class="text-xs" style="color: var(--nav-text-muted);">{{ s.ville }}</span>
+                </li>
+              </ul>
+            </div>
+          </template>
+        </div>
+
+        <!-- Footer -->
+        <div
+          class="px-5 py-3 shrink-0 text-xs"
+          style="border-top: 1px solid var(--nav-bg-alt); color: var(--nav-text-muted); background: var(--nav-surface);"
+        >
+          Click sur une structure pour ouvrir sa fiche
+        </div>
+      </div>
+    </Transition>
+  </Teleport>
+</template>
+
+<script setup lang="ts">
+import type { ReseauxBifurcationData, StructureV2 } from '~/types/structure-v2'
+
+const FAMILLE_COLORS: Record<number, string> = {
+  1: '#a85d3e',
+  2: '#c4a472',
+  3: '#d4a017',
+  4: '#5a7a4a',
+  5: '#3d6a8c',
+  6: '#6b3fa0',
+}
+
+const FAMILLE_LABELS: Record<number, string> = {
+  1: 'Reemploi & filieres',
+  2: 'Frugalite & low-tech',
+  3: 'Architecture sociale',
+  4: 'Collectifs & AMO',
+  5: 'Urbanisme de transition',
+  6: 'Recherche-action',
+}
+
+const FAMILLE_DESCRIPTIONS: Record<number, string> = {
+  1: "Structures dont le geste premier est de travailler avec la matiere existante : deconstruction selective, plateformes de redistribution, filieres biosourcees et geosourcees.",
+  2: "Pratiques qui partent du principe qu'on peut faire mieux avec moins. Renovation profonde, materiaux locaux, sobriete choisie.",
+  3: "Structures dont le terrain premier est le mal-logement, la precarite, l'hospitalite. Architecture comme reponse a l'urgence sociale.",
+  4: "Structures qui accompagnent les projets collectifs : cooperatives d'habitat, ecovillages, accompagnement vers l'autogestion ou la renovation.",
+  5: "Demarches a l'echelle du territoire : villes en transition, PLU alternatifs, coalitions territoriales.",
+  6: "Recherche-action et production de contre-savoirs (Forensic Architecture, Rural Studio, PEROU, Centrala). Badge transversal aux familles.",
+}
+
+const props = defineProps<{
+  modelValue: boolean
+  familleId: number | null
+  data: ReseauxBifurcationData | null
+}>()
+
+const emit = defineEmits<{
+  'update:modelValue': [value: boolean]
+  'select-structure': [id: string]
+}>()
+
+function close() {
+  emit('update:modelValue', false)
+}
+
+function selectStructure(id: string) {
+  // Fermer d'abord pour eviter superposition de modales
+  emit('update:modelValue', false)
+  emit('select-structure', id)
+}
+
+// Fermeture Esc globale
+onMounted(() => {
+  const handler = (e: KeyboardEvent) => {
+    if (e.key === 'Escape' && props.modelValue) close()
+  }
+  window.addEventListener('keydown', handler)
+  onUnmounted(() => window.removeEventListener('keydown', handler))
+})
+
+const familleColor = computed(() =>
+  FAMILLE_COLORS[props.familleId ?? 0] ?? '#888'
+)
+
+const familleLabel = computed(() =>
+  FAMILLE_LABELS[props.familleId ?? 0] ?? ''
+)
+
+const familleDescription = computed(() =>
+  FAMILLE_DESCRIPTIONS[props.familleId ?? 0] ?? ''
+)
+
+const principalStructures = computed<StructureV2[]>(() => {
+  if (!props.data || props.familleId == null) return []
+  return props.data.structures
+    .filter(s => s.famille_principale === props.familleId)
+    .sort((a, b) => a.nom.localeCompare(b.nom, 'fr'))
+})
+
+const secondaireStructures = computed<StructureV2[]>(() => {
+  if (!props.data || props.familleId == null) return []
+  return props.data.structures
+    .filter(s =>
+      s.famille_principale !== props.familleId
+      && (s.familles_secondaires ?? []).includes(props.familleId as number)
+    )
+    .sort((a, b) => a.nom.localeCompare(b.nom, 'fr'))
+})
+
+const allStructures = computed<StructureV2[]>(() => {
+  return [...principalStructures.value, ...secondaireStructures.value]
+})
+
+// Heuristique : si > 3 secondaires, separer en sections distinctes
+const showSplit = computed(() => secondaireStructures.value.length > 3)
+</script>
+
+<style scoped>
+.structure-row:hover {
+  background: var(--nav-bg-alt);
+}
+
+.backdrop-enter-active, .backdrop-leave-active { transition: opacity 0.2s ease; }
+.backdrop-enter-from, .backdrop-leave-to { opacity: 0; }
+
+.modal-enter-active, .modal-leave-active {
+  transition: opacity 0.2s ease, transform 0.2s ease;
+}
+.modal-enter-from, .modal-leave-to {
+  opacity: 0;
+  transform: translate(-50%, -52%);
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .backdrop-enter-active, .backdrop-leave-active { transition: none; }
+  .modal-enter-active, .modal-leave-active { transition: none; }
+}
+</style>
diff --git a/components/FicheModalV2.vue b/components/FicheModalV2.vue
new file mode 100644
index 0000000..8cccf41
--- /dev/null
+++ b/components/FicheModalV2.vue
@@ -0,0 +1,341 @@
+<template>
+  <Teleport to="body">
+    <!-- Backdrop -->
+    <Transition name="backdrop">
+      <div
+        v-if="modelValue && structureId != null"
+        class="fixed inset-0 z-[1500]"
+        style="background: rgba(26,34,56,0.55);"
+        @click="close"
+        aria-hidden="true"
+      />
+    </Transition>
+
+    <!-- Modal -->
+    <Transition name="modal">
+      <div
+        v-if="modelValue && structureId != null && structure"
+        class="fixed z-[1501] top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 flex flex-col"
+        style="
+          width: min(780px, 94vw);
+          max-height: 90vh;
+          background: var(--nav-bg);
+          border-radius: 16px;
+          box-shadow: 0 16px 64px rgba(26,34,56,0.28);
+          overflow: hidden;
+        "
+        role="dialog"
+        aria-modal="true"
+        :aria-label="structure?.nom ?? 'Fiche structure'"
+        @keydown.esc="close"
+      >
+        <!-- Header modal -->
+        <div
+          class="flex items-center justify-between px-5 py-3 shrink-0"
+          :style="`border-bottom: 3px solid ${familleColor}; background: var(--nav-surface);`"
+        >
+          <div class="flex items-center gap-3">
+            <!-- Pastille famille -->
+            <div
+              class="w-3 h-3 rounded-full shrink-0"
+              :style="`background: ${familleColor};`"
+            />
+            <span class="text-sm font-semibold" style="color: var(--nav-text-muted);">
+              {{ familleLabel }}
+            </span>
+            <!-- Badges -->
+            <div class="flex gap-1.5">
+              <span
+                v-if="structure.badges.centre_ressources"
+                class="px-2 py-0.5 rounded-full text-xs font-medium"
+                style="background: #2d8a6b22; color: #2d8a6b;"
+              >Centre ressources</span>
+              <span
+                v-if="structure.badges.mouvement_manifeste"
+                class="px-2 py-0.5 rounded-full text-xs font-medium"
+                style="background: #c44a2f22; color: #c44a2f;"
+              >Manifeste</span>
+              <span
+                v-if="structure.badges.contre_pouvoir_spatial"
+                class="px-2 py-0.5 rounded-full text-xs font-medium"
+                style="background: #1a3a6b22; color: #1a3a6b;"
+              >Contre-pouvoir</span>
+              <span
+                v-if="structure.badges.f6_recherche_politique"
+                class="px-2 py-0.5 rounded-full text-xs font-medium"
+                style="background: #6b3fa022; color: #6b3fa0;"
+              >Recherche pol.</span>
+            </div>
+          </div>
+          <div class="flex items-center gap-2">
+            <a
+              v-if="structure.url"
+              :href="structure.url"
+              target="_blank"
+              rel="noopener noreferrer"
+              class="flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-medium transition-opacity hover:opacity-70"
+              style="background: var(--nav-bg-alt); color: var(--nav-text);"
+            >
+              <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
+                <path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6"/>
+                <polyline points="15 3 21 3 21 9"/>
+                <line x1="10" y1="14" x2="21" y2="3"/>
+              </svg>
+              Site web
+            </a>
+            <button
+              @click="close"
+              class="w-8 h-8 rounded-lg flex items-center justify-center transition-colors"
+              style="background: var(--nav-bg-alt); color: var(--nav-text-muted);"
+              aria-label="Fermer"
+            >
+              <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" aria-hidden="true">
+                <line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/>
+              </svg>
+            </button>
+          </div>
+        </div>
+
+        <!-- Contenu scrollable -->
+        <div class="flex-1 overflow-y-auto px-5 py-5">
+          <!-- Nom + meta -->
+          <div class="mb-4">
+            <h2 class="text-xl font-bold mb-1" style="color: var(--nav-text);">{{ structure.nom }}</h2>
+            <div class="flex flex-wrap gap-2 text-sm" style="color: var(--nav-text-muted);">
+              <span>{{ structure.type_principal }}</span>
+              <span>·</span>
+              <span>{{ structure.ville }}, {{ structure.pays }}</span>
+            </div>
+          </div>
+
+          <!-- Hashtags -->
+          <div v-if="structure.hashtags.length" class="flex flex-wrap gap-1.5 mb-4">
+            <span
+              v-for="tag in structure.hashtags"
+              :key="tag"
+              class="px-2 py-0.5 rounded-full text-xs"
+              style="background: var(--nav-bg-alt); color: var(--nav-text-muted);"
+            >{{ tag }}</span>
+          </div>
+
+          <!-- Description courte -->
+          <p class="text-sm leading-relaxed mb-4" style="color: var(--nav-text);">{{ structure.description_courte }}</p>
+
+          <!-- Description longue (expandable) -->
+          <div v-if="structure.description_longue" class="mb-4">
+            <div
+              class="text-sm leading-relaxed"
+              style="color: var(--nav-text); white-space: pre-wrap;"
+              :style="showFullDesc ? '' : 'max-height: 120px; overflow: hidden;'"
+            >{{ structure.description_longue }}</div>
+            <button
+              @click="showFullDesc = !showFullDesc"
+              class="mt-2 text-xs underline"
+              style="color: var(--nav-text-muted);"
+            >{{ showFullDesc ? 'Réduire' : 'Lire la suite…' }}</button>
+          </div>
+
+          <!-- Pensées rattachées -->
+          <div v-if="structure.pensees && structure.pensees.length" class="mb-4">
+            <h3 class="text-xs font-bold uppercase tracking-wide mb-2" style="color: var(--nav-text-muted);">Pensées rattachées</h3>
+            <div class="flex flex-wrap gap-1.5">
+              <span
+                v-for="pensee in structure.pensees"
+                :key="pensee.id"
+                class="px-2 py-0.5 rounded text-xs"
+                :style="pensee.confiance === 'ia_suggested'
+                  ? 'background: var(--nav-bg-alt); color: var(--nav-text-muted); border: 1px dashed var(--nav-bg-alt);'
+                  : 'background: var(--nav-bg-alt); color: var(--nav-text);'"
+                :title="pensee.confiance === 'ia_suggested' ? 'IA suggéré' : ''"
+              >
+                {{ pensee.label }}<span v-if="pensee.confiance === 'ia_suggested'" class="ml-1 opacity-60">~</span>
+              </span>
+            </div>
+          </div>
+
+          <!-- Projets emblématiques -->
+          <div v-if="projetsStructure.length" class="mb-4">
+            <h3 class="text-xs font-bold uppercase tracking-wide mb-2" style="color: var(--nav-text-muted);">Projets emblématiques</h3>
+            <div class="space-y-2">
+              <div
+                v-for="projet in projetsStructure.slice(0, 5)"
+                :key="projet.id"
+                class="rounded-lg p-3"
+                style="background: var(--nav-surface); border: 1px solid var(--nav-bg-alt);"
+              >
+                <div class="flex items-start justify-between gap-2">
+                  <span class="font-medium text-sm" style="color: var(--nav-text);">{{ projet.nom }}</span>
+                  <span v-if="projet.annee" class="text-xs shrink-0" style="color: var(--nav-text-muted);">{{ projet.annee }}</span>
+                </div>
+                <div v-if="projet.lieu" class="text-xs mt-0.5" style="color: var(--nav-text-muted);">{{ projet.lieu }}</div>
+                <p class="text-xs mt-1 leading-relaxed" style="color: var(--nav-text-muted);">{{ projet.description.slice(0, 120) }}{{ projet.description.length > 120 ? '…' : '' }}</p>
+                <a
+                  v-if="projet.url"
+                  :href="projet.url"
+                  target="_blank"
+                  rel="noopener noreferrer"
+                  class="text-xs mt-1 inline-block"
+                  style="color: var(--nav-text-muted); text-decoration: underline;"
+                >En savoir plus →</a>
+              </div>
+            </div>
+          </div>
+
+          <!-- Structures voisines (graphe) -->
+          <div v-if="structuresVoisines.length" class="mb-4">
+            <h3 class="text-xs font-bold uppercase tracking-wide mb-2" style="color: var(--nav-text-muted);">Structures liées</h3>
+            <div class="flex flex-wrap gap-2">
+              <button
+                v-for="voisine in structuresVoisines.slice(0, 6)"
+                :key="voisine.id"
+                class="px-2 py-1 rounded text-xs transition-colors hover:opacity-70"
+                style="background: var(--nav-bg-alt); color: var(--nav-text); border: 1px solid transparent;"
+                @click="emit('update:structureId', voisine.id)"
+              >{{ voisine.nom }}</button>
+            </div>
+          </div>
+
+          <!-- Sources -->
+          <div v-if="structure.sources && structure.sources.length" class="mb-4">
+            <h3 class="text-xs font-bold uppercase tracking-wide mb-2" style="color: var(--nav-text-muted);">Sources</h3>
+            <div class="space-y-1">
+              <div v-for="(source, i) in structure.sources" :key="i" class="flex items-center gap-2">
+                <span
+                  class="px-1.5 py-0.5 rounded text-xs shrink-0"
+                  style="background: var(--nav-bg-alt); color: var(--nav-text-muted);"
+                >{{ source.type }}</span>
+                <a
+                  v-if="source.url"
+                  :href="source.url"
+                  target="_blank"
+                  rel="noopener noreferrer"
+                  class="text-xs underline truncate"
+                  style="color: var(--nav-text);"
+                >{{ source.titre }}</a>
+                <span v-else class="text-xs" style="color: var(--nav-text);">{{ source.titre }}</span>
+              </div>
+            </div>
+          </div>
+
+          <!-- CTAs -->
+          <div class="flex gap-3 pt-2" style="border-top: 1px solid var(--nav-bg-alt);">
+            <a
+              href="/contribuer"
+              class="text-xs underline"
+              style="color: var(--nav-text-muted);"
+            >Signaler une erreur</a>
+            <a
+              href="/contribuer"
+              class="text-xs underline"
+              style="color: var(--nav-text-muted);"
+            >Réclamer cette fiche</a>
+          </div>
+        </div>
+      </div>
+    </Transition>
+  </Teleport>
+</template>
+
+<script setup lang="ts">
+import type { ReseauxBifurcationData, StructureV2, ProjetEmblematique } from '~/types/structure-v2'
+
+const FAMILLE_COLORS: Record<number, string> = {
+  1: '#a85d3e',
+  2: '#c4a472',
+  3: '#d4a017',
+  4: '#5a7a4a',
+  5: '#3d6a8c',
+}
+
+const FAMILLE_LABELS: Record<number, string> = {
+  1: 'Réemploi & filières',
+  2: 'Frugalité & low-tech',
+  3: 'Architecture sociale',
+  4: 'Collectifs & AMO',
+  5: 'Urbanisme de transition',
+}
+
+const props = defineProps<{
+  modelValue: boolean
+  structureId: string | null
+  data: ReseauxBifurcationData | null
+}>()
+
+const emit = defineEmits<{
+  'update:modelValue': [value: boolean]
+  'update:structureId': [id: string]
+}>()
+
+const showFullDesc = ref(false)
+
+function close() {
+  emit('update:modelValue', false)
+  showFullDesc.value = false
+}
+
+// Fermeture Esc globale
+onMounted(() => {
+  const handler = (e: KeyboardEvent) => {
+    if (e.key === 'Escape' && props.modelValue) close()
+  }
+  window.addEventListener('keydown', handler)
+  onUnmounted(() => window.removeEventListener('keydown', handler))
+})
+
+// Remettre showFullDesc a false a chaque changement de fiche
+watch(() => props.structureId, () => {
+  showFullDesc.value = false
+})
+
+const structure = computed<StructureV2 | null>(() => {
+  if (!props.data || !props.structureId) return null
+  return props.data.structures.find(s => s.id === props.structureId) ?? null
+})
+
+const familleColor = computed(() =>
+  FAMILLE_COLORS[structure.value?.famille_principale ?? 1] ?? '#888'
+)
+
+const familleLabel = computed(() =>
+  FAMILLE_LABELS[structure.value?.famille_principale ?? 1] ?? ''
+)
+
+const projetsStructure = computed<ProjetEmblematique[]>(() => {
+  if (!props.data || !props.structureId) return []
+  return props.data.projets?.filter(p => p.structure_parent === props.structureId) ?? []
+})
+
+const structuresVoisines = computed<StructureV2[]>(() => {
+  if (!props.data || !props.structureId) return []
+  const edges = props.data.graphe?.edges ?? []
+  const voisineIds = edges
+    .filter(e => e.source === props.structureId || e.target === props.structureId)
+    .sort((a, b) => (b.score ?? 0) - (a.score ?? 0))
+    .map(e => e.source === props.structureId ? e.target : e.source)
+    .slice(0, 8)
+
+  return voisineIds
+    .map(id => props.data!.structures.find(s => s.id === id))
+    .filter(Boolean) as StructureV2[]
+})
+</script>
+
+<style scoped>
+/* Backdrop */
+.backdrop-enter-active, .backdrop-leave-active { transition: opacity 0.2s ease; }
+.backdrop-enter-from, .backdrop-leave-to { opacity: 0; }
+
+/* Modal */
+.modal-enter-active, .modal-leave-active {
+  transition: opacity 0.2s ease, transform 0.2s ease;
+}
+.modal-enter-from, .modal-leave-to {
+  opacity: 0;
+  transform: translate(-50%, -52%);
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .backdrop-enter-active, .backdrop-leave-active { transition: none; }
+  .modal-enter-active, .modal-leave-active { transition: none; }
+}
+</style>
diff --git a/components/GraphView.vue b/components/GraphView.vue
new file mode 100644
index 0000000..05c9dad
--- /dev/null
+++ b/components/GraphView.vue
@@ -0,0 +1,860 @@
+<template>
+  <div class="graph-view" style="width: 100%; height: 100%; position: relative; background: var(--nav-bg);">
+    <!-- Canvas SVG pour D3 (zone centrale, marge droite pour sidebar) -->
+    <svg
+      ref="svgRef"
+      :style="{
+        width: sidebarOpen ? 'calc(100% - 200px)' : 'calc(100% - 40px)',
+        height: '100%',
+        transition: 'width 0.2s ease',
+      }"
+    ></svg>
+
+    <!-- Sidebar droite (repliable) - 3 sections : AFFICHER / HASHTAGS / MODE D'EMPLOI -->
+    <aside
+      :style="{
+        position: 'absolute', top: '0', right: '0', bottom: '0',
+        width: sidebarOpen ? '200px' : '40px',
+        background: 'var(--nav-surface)',
+        borderLeft: '1px solid var(--nav-bg-alt)',
+        display: 'flex', flexDirection: 'column',
+        transition: 'width 0.2s ease',
+        zIndex: 10,
+      }"
+    >
+      <!-- Toggle (toujours visible) -->
+      <button
+        @click="sidebarOpen = !sidebarOpen"
+        :title="sidebarOpen ? 'Replier la sidebar' : 'Deplier la sidebar'"
+        style="
+          width: 100%; height: 36px; flex-shrink: 0;
+          display: flex; align-items: center; justify-content: center;
+          background: var(--nav-bg-alt); border: none; cursor: pointer;
+          color: var(--nav-text-muted); font-size: 0.78rem; font-weight: 700;
+          border-bottom: 1px solid var(--nav-bg-alt);
+        "
+      >{{ sidebarOpen ? '>>' : '<<' }}</button>
+
+      <!-- Mode replie : label vertical -->
+      <div
+        v-if="!sidebarOpen"
+        style="
+          flex: 1; display: flex; align-items: center; justify-content: center;
+          writing-mode: vertical-rl; transform: rotate(180deg);
+          font-size: 0.7rem; font-weight: 700; color: var(--nav-text-muted);
+          letter-spacing: 0.12em; text-transform: uppercase;
+        "
+      >HASHTAGS ({{ activeHashtags.length }}/{{ props.allHashtags.length }})</div>
+
+      <!-- Mode deplie : 3 sections empilees -->
+      <template v-if="sidebarOpen">
+        <div style="flex: 1; overflow-y: auto; display: flex; flex-direction: column;">
+
+          <!-- SECTION 1 : AFFICHER (toggles familles / pratiques) -->
+          <div style="padding: 10px 12px; flex-shrink: 0;">
+            <div style="font-size: 0.72rem; font-weight: 700; color: var(--nav-text); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px;">Afficher</div>
+            <label
+              :style="{
+                display: 'flex', alignItems: 'center', gap: '8px',
+                padding: '7px 10px', marginBottom: '4px',
+                borderRadius: '6px', cursor: 'pointer',
+                fontSize: '0.82rem', fontWeight: 600,
+                background: showFamilles ? 'var(--nav-bg-alt)' : 'transparent',
+                color: showFamilles ? 'var(--nav-text)' : 'var(--nav-text-muted)',
+                transition: 'all 0.12s',
+              }"
+            >
+              <input type="checkbox" v-model="showFamilles" style="cursor: pointer; width: 14px; height: 14px;" />
+              <span>Familles</span>
+            </label>
+            <label
+              :style="{
+                display: 'flex', alignItems: 'center', gap: '8px',
+                padding: '7px 10px',
+                borderRadius: '6px', cursor: 'pointer',
+                fontSize: '0.82rem', fontWeight: 600,
+                background: showPratiques ? 'var(--nav-bg-alt)' : 'transparent',
+                color: showPratiques ? 'var(--nav-text)' : 'var(--nav-text-muted)',
+                transition: 'all 0.12s',
+              }"
+            >
+              <input type="checkbox" v-model="showPratiques" style="cursor: pointer; width: 14px; height: 14px;" />
+              <span>Pratiques</span>
+            </label>
+          </div>
+
+          <!-- SECTION 2 : HASHTAGS (chips groupees) -->
+          <div style="border-top: 1px solid var(--nav-bg-alt); margin-top: 0; padding: 10px 12px 8px; flex-shrink: 0;">
+            <div style="display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 6px;">
+              <span style="font-size: 0.72rem; font-weight: 700; color: var(--nav-text); text-transform: uppercase; letter-spacing: 0.08em;">Hashtags</span>
+              <span style="font-size: 0.68rem; color: var(--nav-text-muted);">{{ activeHashtags.length }} actif{{ activeHashtags.length > 1 ? 's' : '' }}</span>
+            </div>
+            <button
+              v-if="activeHashtags.length"
+              @click="activeHashtags = []"
+              style="margin-bottom: 6px; font-size: 0.68rem; color: var(--nav-text-muted); background: none; border: none; cursor: pointer; text-decoration: underline; padding: 0;"
+            >Tout effacer</button>
+          </div>
+
+          <div style="flex: 1; overflow-y: auto; padding: 0 10px 10px;">
+            <div
+              v-for="group in hashtagsByFamille"
+              :key="group.famille"
+              style="margin-bottom: 10px;"
+            >
+              <div
+                :style="{
+                  fontSize: '0.65rem', fontWeight: 700,
+                  color: group.color, textTransform: 'uppercase',
+                  letterSpacing: '0.06em', marginBottom: '4px',
+                  paddingLeft: '2px',
+                }"
+              >{{ group.label }}</div>
+              <div style="display: flex; flex-wrap: wrap; gap: 3px;">
+                <span
+                  v-for="tag in group.tags"
+                  :key="tag"
+                  style="padding: 2px 7px; border-radius: 9999px; font-size: 0.66rem; cursor: pointer; transition: all 0.12s;"
+                  :style="activeHashtags.includes(tag)
+                    ? `background: ${group.color}; color: white; font-weight: 600;`
+                    : 'background: var(--nav-bg-alt); color: var(--nav-text-muted);'"
+                  @click="toggleHashtag(tag)"
+                >{{ tag }}</span>
+              </div>
+            </div>
+          </div>
+
+          <!-- SECTION 3 : MODE D'EMPLOI -->
+          <div style="border-top: 1px solid var(--nav-bg-alt); padding: 10px 12px; flex-shrink: 0;">
+            <div style="font-size: 0.72rem; font-weight: 700; color: var(--nav-text); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 6px;">Mode d'emploi</div>
+            <div style="font-size: 0.7rem; color: var(--nav-text-muted); line-height: 1.5;">
+              La carte croise des familles editoriales avec des pratiques (hashtags). Coche les couches a afficher, filtre par hashtag, clique sur un noeud pour en savoir plus.
+            </div>
+          </div>
+
+        </div>
+      </template>
+    </aside>
+
+    <!-- Tooltip -->
+    <div ref="tooltipRef" style="
+      position: absolute; pointer-events: none;
+      background: var(--nav-surface); border: 1px solid var(--nav-bg-alt);
+      border-radius: 6px; padding: 8px 12px; font-size: 0.78rem;
+      color: var(--nav-text); max-width: 220px; box-shadow: 0 4px 12px rgba(0,0,0,0.15);
+      opacity: 0; transition: opacity 0.15s; z-index: 100;
+    "></div>
+
+    <!-- Popover unifie (famille OU hashtag) -->
+    <div
+      v-if="popover.open"
+      :style="{
+        position: 'absolute',
+        left: popover.x + 'px',
+        top: popover.y + 'px',
+        background: 'var(--nav-surface)',
+        border: '1px solid var(--nav-bg-alt)',
+        borderRadius: '8px',
+        padding: '12px 14px',
+        maxWidth: '280px',
+        boxShadow: '0 6px 18px rgba(0,0,0,0.18)',
+        zIndex: 50,
+      }"
+      @click.stop
+    >
+      <button
+        @click="closePopover"
+        style="
+          position: absolute; top: 4px; right: 6px;
+          background: none; border: none; cursor: pointer;
+          font-size: 1rem; color: var(--nav-text-muted); padding: 2px 6px;
+          line-height: 1;
+        "
+        title="Fermer"
+      >x</button>
+      <div
+        :style="{
+          fontWeight: 700, fontSize: '0.92rem',
+          color: popover.color, marginBottom: '6px',
+          paddingRight: '14px',
+        }"
+      >{{ popover.title }}</div>
+
+      <!-- Body famille : description + compteur + 6 structures + bouton "Voir toutes" -->
+      <div v-if="popover.kind === 'famille'">
+        <div style="font-size: 0.78rem; line-height: 1.45; color: var(--nav-text); margin-bottom: 10px;">
+          {{ popover.body }}
+        </div>
+        <div style="font-size: 0.72rem; color: var(--nav-text-muted); margin-bottom: 6px;">
+          {{ popover.structures.length }} structure{{ popover.structures.length > 1 ? 's' : '' }} dans cette famille
+        </div>
+        <ul style="list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 3px;">
+          <li
+            v-for="s in popover.structures.slice(0, 6)"
+            :key="s.id"
+            @click="selectStructureFromPopover(s.id)"
+            style="
+              font-size: 0.78rem; color: var(--nav-text);
+              padding: 4px 6px; border-radius: 4px;
+              cursor: pointer; transition: background 0.1s;
+              display: flex; align-items: center; gap: 6px;
+            "
+            @mouseenter="(e: any) => e.currentTarget.style.background = 'var(--nav-bg-alt)'"
+            @mouseleave="(e: any) => e.currentTarget.style.background = 'transparent'"
+          >
+            <span
+              style="width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0;"
+              :style="`background: ${popover.color};`"
+            />
+            <span>{{ s.nom }}</span>
+          </li>
+        </ul>
+        <button
+          v-if="popover.familleId != null"
+          @click="openFicheFamilleFromPopover"
+          style="
+            margin-top: 10px; width: 100%;
+            padding: 7px 10px; border-radius: 6px;
+            background: var(--nav-bg-alt); border: none;
+            font-size: 0.75rem; font-weight: 600; cursor: pointer;
+            color: var(--nav-text); transition: opacity 0.12s;
+            text-align: left;
+          "
+          @mouseenter="(e: any) => e.currentTarget.style.opacity = '0.7'"
+          @mouseleave="(e: any) => e.currentTarget.style.opacity = '1'"
+        >Voir toutes les {{ popover.structures.length }} pratiques -&gt;</button>
+      </div>
+
+      <!-- Body hashtag : ligne generique + compteur + liste structures cliquables -->
+      <div v-else-if="popover.kind === 'hashtag'">
+        <div
+          style="
+            font-size: 0.72rem; color: var(--nav-text-muted);
+            font-style: italic; margin-bottom: 8px; line-height: 1.4;
+          "
+        >Pratique transversale - portee par {{ popover.structures.length }} structure{{ popover.structures.length > 1 ? 's' : '' }} de {{ popover.famillesCount }} famille{{ popover.famillesCount > 1 ? 's' : '' }}</div>
+        <ul style="list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 3px;">
+          <li
+            v-for="s in popover.structures.slice(0, 6)"
+            :key="s.id"
+            @click="selectStructureFromPopover(s.id)"
+            style="
+              font-size: 0.78rem; color: var(--nav-text);
+              padding: 4px 6px; border-radius: 4px;
+              cursor: pointer; transition: background 0.1s;
+            "
+            @mouseenter="(e: any) => e.currentTarget.style.background = 'var(--nav-bg-alt)'"
+            @mouseleave="(e: any) => e.currentTarget.style.background = 'transparent'"
+          >{{ s.nom }}</li>
+        </ul>
+        <div
+          v-if="popover.structures.length > 6"
+          style="font-size: 0.7rem; color: var(--nav-text-muted); margin-top: 6px; padding-left: 6px;"
+        >+ {{ popover.structures.length - 6 }} autre{{ popover.structures.length - 6 > 1 ? 's' : '' }}</div>
+      </div>
+    </div>
+
+    <!-- Fiche famille modale -->
+    <FicheFamilleModal
+      v-model="ficheFamilleOpen"
+      :famille-id="ficheFamilleId"
+      :data="props.data"
+      @select-structure="(id) => emit('select-structure', id)"
+    />
+  </div>
+</template>
+
+<script setup lang="ts">
+import type { ReseauxBifurcationData } from '~/types/structure-v2'
+
+const props = defineProps<{
+  data: ReseauxBifurcationData | null
+  allHashtags: string[]
+  active?: boolean
+}>()
+
+const emit = defineEmits<{
+  'select-structure': [id: string]
+}>()
+
+const svgRef = ref<SVGElement | null>(null)
+const tooltipRef = ref<HTMLElement | null>(null)
+
+// Hashtag filter
+const activeHashtags = ref<string[]>([])
+const sidebarOpen = ref(true)
+
+// Layers superposables (remplace viewMode exclusif PV2-5e)
+const showFamilles = ref(true)
+const showPratiques = ref(false)
+
+function toggleHashtag(tag: string) {
+  activeHashtags.value = activeHashtags.value.includes(tag)
+    ? activeHashtags.value.filter(t => t !== tag)
+    : [...activeHashtags.value, tag]
+}
+
+// Popover unifie (famille | hashtag)
+type PopoverState = {
+  open: boolean
+  kind: 'famille' | 'hashtag' | null
+  x: number
+  y: number
+  title: string
+  body: string
+  color: string
+  structures: { id: string; nom: string }[]
+  familleId: number | null
+  famillesCount: number
+}
+
+const popover = ref<PopoverState>({
+  open: false,
+  kind: null,
+  x: 0,
+  y: 0,
+  title: '',
+  body: '',
+  color: '#000',
+  structures: [],
+  familleId: null,
+  famillesCount: 0,
+})
+
+// Fiche famille modale
+const ficheFamilleOpen = ref(false)
+const ficheFamilleId = ref<number | null>(null)
+
+function closePopover() {
+  popover.value.open = false
+  popover.value.kind = null
+}
+
+function selectStructureFromPopover(id: string) {
+  closePopover()
+  emit('select-structure', id)
+}
+
+function openFicheFamilleFromPopover() {
+  if (popover.value.familleId == null) return
+  ficheFamilleId.value = popover.value.familleId
+  ficheFamilleOpen.value = true
+  closePopover()
+}
+
+// Mapping hashtag -> famille majoritaire
+// En cas d'egalite : prendre la famille la plus petite (visibilite minoritaires)
+const tagToFamille = computed<Record<string, number>>(() => {
+  if (!props.data) return {}
+  const counts: Record<string, Record<number, number>> = {}
+  props.data.structures.forEach(s => {
+    s.hashtags.forEach(tag => {
+      if (!counts[tag]) counts[tag] = {}
+      counts[tag][s.famille_principale] = (counts[tag][s.famille_principale] ?? 0) + 1
+    })
+  })
+  const familleSize: Record<number, number> = {}
+  props.data.structures.forEach(s => {
+    familleSize[s.famille_principale] = (familleSize[s.famille_principale] ?? 0) + 1
+  })
+  const out: Record<string, number> = {}
+  for (const tag in counts) {
+    const entries = Object.entries(counts[tag])
+    entries.sort((a, b) => {
+      const diff = (b[1] as number) - (a[1] as number)
+      if (diff !== 0) return diff
+      return (familleSize[Number(a[0])] ?? 0) - (familleSize[Number(b[0])] ?? 0)
+    })
+    out[tag] = Number(entries[0][0])
+  }
+  return out
+})
+
+const hashtagsByFamille = computed(() => {
+  if (!props.data) return []
+  const map = tagToFamille.value
+  const groups: Record<number, string[]> = {}
+  props.allHashtags.forEach(tag => {
+    const fam = map[tag]
+    if (fam == null) return
+    if (!groups[fam]) groups[fam] = []
+    groups[fam].push(tag)
+  })
+  return [1, 2, 3, 4, 5, 6]
+    .filter(famId => groups[famId]?.length)
+    .map(famId => ({
+      famille: famId,
+      label: FAMILLE_LABELS[famId],
+      color: FAMILLE_COLORS[famId],
+      tags: groups[famId].sort(),
+    }))
+})
+
+// Structures portant un hashtag donne (pour popover)
+function structuresForHashtag(tag: string): { id: string; nom: string }[] {
+  if (!props.data) return []
+  return props.data.structures
+    .filter(s => s.hashtags.includes(tag))
+    .map(s => ({ id: s.id, nom: s.nom }))
+}
+
+// IDs de structures correspondant aux hashtags actifs
+const filteredStructureIds = computed(() => {
+  if (!props.data || !activeHashtags.value.length) return null
+  const ids = new Set(
+    props.data.structures
+      .filter(s => activeHashtags.value.every(h => s.hashtags.includes(h)))
+      .map(s => s.id)
+  )
+  return ids
+})
+
+const FAMILLE_COLORS: Record<number, string> = {
+  1: '#a85d3e',
+  2: '#c4a472',
+  3: '#d4a017',
+  4: '#5a7a4a',
+  5: '#3d6a8c',
+  6: '#6b3fa0',
+}
+
+const FAMILLE_LABELS: Record<number, string> = {
+  1: 'Reemploi',
+  2: 'Frugalite',
+  3: 'Social',
+  4: 'Collectifs',
+  5: 'Urbanisme',
+  6: 'Recherche',
+}
+
+const FAMILLE_DESCRIPTIONS: Record<number, string> = {
+  1: "Structures dont le geste premier est de travailler avec la matiere existante : deconstruction selective, plateformes de redistribution, filieres biosourcees et geosourcees.",
+  2: "Pratiques qui partent du principe qu'on peut faire mieux avec moins. Renovation profonde, materiaux locaux, sobriete choisie.",
+  3: "Structures dont le terrain premier est le mal-logement, la precarite, l'hospitalite. Architecture comme reponse a l'urgence sociale.",
+  4: "Structures qui accompagnent les projets collectifs : cooperatives d'habitat, ecovillages, accompagnement vers l'autogestion ou la renovation.",
+  5: "Demarches a l'echelle du territoire : villes en transition, PLU alternatifs, coalitions territoriales.",
+  6: "Recherche-action et production de contre-savoirs (Forensic Architecture, Rural Studio, PEROU, Centrala). Badge transversal aux familles.",
+}
+
+let simulation: any = null
+let d3NodeSelection: any = null
+let d3LinkSelection: any = null
+
+async function initGraph() {
+  if (!svgRef.value || !props.data) return
+
+  const d3 = await import('d3')
+
+  const svgEl = svgRef.value
+  const width = svgEl.clientWidth || 800
+  const height = svgEl.clientHeight || 600
+
+  // Nettoyer
+  d3.select(svgEl).selectAll('*').remove()
+  closePopover()
+
+  const svg = d3.select(svgEl)
+    .attr('viewBox', `0 0 ${width} ${height}`)
+
+  // Click sur le SVG vide -> fermer popover
+  svg.on('click', (event: any) => {
+    if (event.target === svgEl) closePopover()
+  })
+
+  // Groupe principal avec zoom
+  const g = svg.append('g')
+  const zoomBehavior = d3.zoom<SVGElement, unknown>()
+    .scaleExtent([0.2, 4])
+    .on('zoom', (event) => {
+      g.attr('transform', event.transform)
+      closePopover()
+    })
+
+  svg.call(zoomBehavior as any)
+
+  const { allNodes, links } = buildNodesLinks(width, height)
+
+  // Simulation force-directed
+  if (simulation) simulation.stop()
+
+  // Adapter la charge selon le nombre de noeuds (mode "tout coche" = plus de repulsion)
+  const heavyMode = showPratiques.value && allNodes.length > 150
+
+  simulation = d3.forceSimulation(allNodes)
+    .force('link', d3.forceLink(links).id((d: any) => d.id)
+      .distance((d: any) => {
+        if (d.type === 'practice') return 90
+        return d.type === 'primary' ? 80 : 120
+      })
+      .strength((d: any) => d.strength ?? 0.5))
+    .force('charge', d3.forceManyBody().strength(heavyMode ? -80 : -120))
+    .force('center', d3.forceCenter(width / 2, height / 2))
+    .force('collision', d3.forceCollide().radius((d: any) => d.r + 4))
+
+  // Rendu liens
+  d3LinkSelection = g.append('g').selectAll('line')
+    .data(links)
+    .join('line')
+    .attr('stroke', (d: any) => {
+      if (d.type === 'practice') return 'rgba(150,150,150,0.25)'
+      return d.type === 'primary' ? 'rgba(150,150,150,0.45)' : 'rgba(150,150,150,0.35)'
+    })
+    .attr('stroke-width', 1.5)
+    .attr('stroke-dasharray', null)
+
+  // Rendu noeuds (groupes g)
+  d3NodeSelection = g.append('g').selectAll('g')
+    .data(allNodes)
+    .join('g')
+    .style('cursor', (d: any) => {
+      if (d.type === 'structure') return 'pointer'
+      if (d.type === 'family') return 'pointer'
+      if (d.type === 'hashtag') return 'pointer'
+      return 'default'
+    })
+    .call(
+      d3.drag<any, any>()
+        .on('start', (event: any, d: any) => {
+          if (!event.active) simulation.alphaTarget(0.3).restart()
+          d.fx = d.x
+          d.fy = d.y
+          closePopover()
+        })
+        .on('drag', (event: any, d: any) => {
+          d.fx = event.x
+          d.fy = event.y
+        })
+        .on('end', (event: any, d: any) => {
+          if (!event.active) simulation.alphaTarget(0)
+          if (d.type !== 'family') {
+            d.fx = null
+            d.fy = null
+          }
+        })
+    )
+    .on('click', (event: any, d: any) => {
+      event.stopPropagation()
+      if (d.type === 'structure') {
+        emit('select-structure', d.id)
+      } else if (d.type === 'family') {
+        openFamillePopover(d, event, svgEl)
+      } else if (d.type === 'hashtag') {
+        openHashtagPopover(d, event, svgEl)
+      }
+    })
+
+  // Cercles
+  d3NodeSelection.append('circle')
+    .attr('r', (d: any) => d.r)
+    .attr('fill', (d: any) => {
+      if (d.type === 'family') return d.color
+      if (d.type === 'hashtag') return d.fill
+      return d.color + 'cc'
+    })
+    .attr('stroke', (d: any) => {
+      if (d.type === 'family') return 'white'
+      if (d.type === 'hashtag') return d.stroke
+      return d.color
+    })
+    .attr('stroke-width', (d: any) => {
+      if (d.type === 'family') return 3
+      if (d.type === 'hashtag') return 2
+      return 1.5
+    })
+
+  // Labels familles
+  d3NodeSelection.filter((d: any) => d.type === 'family')
+    .append('text')
+    .text((d: any) => d.label)
+    .attr('text-anchor', 'middle')
+    .attr('dy', '0.35em')
+    .attr('font-size', '11px')
+    .attr('font-weight', '700')
+    .attr('fill', 'white')
+    .style('pointer-events', 'none')
+
+  // Labels hashtags : texte noir sur fond clair, tronque a 12 caracteres
+  d3NodeSelection.filter((d: any) => d.type === 'hashtag')
+    .append('text')
+    .text((d: any) => {
+      const raw = d.label as string
+      return raw.length > 12 ? raw.slice(0, 12) + '...' : raw
+    })
+    .attr('text-anchor', 'middle')
+    .attr('dy', '0.35em')
+    .attr('font-size', '9px')
+    .attr('font-weight', '600')
+    .attr('fill', '#2a2a2a')
+    .style('pointer-events', 'none')
+
+  // Tooltip hover pour structures
+  d3NodeSelection.filter((d: any) => d.type === 'structure')
+    .on('mouseenter', (_event: any, d: any) => {
+      if (!tooltipRef.value) return
+      tooltipRef.value.style.opacity = '1'
+      tooltipRef.value.innerHTML = `<strong>${d.label}</strong><br><span style="opacity:0.6;font-size:0.7rem;">${FAMILLE_LABELS[d.famille] ?? ''}</span>`
+    })
+    .on('mousemove', (event: any) => {
+      if (!tooltipRef.value || !svgEl) return
+      const rect = (svgEl as HTMLElement).getBoundingClientRect()
+      tooltipRef.value.style.left = (event.clientX - rect.left + 12) + 'px'
+      tooltipRef.value.style.top = (event.clientY - rect.top - 10) + 'px'
+    })
+    .on('mouseleave', () => {
+      if (tooltipRef.value) tooltipRef.value.style.opacity = '0'
+    })
+
+  // Tick - mise a jour positions
+  simulation.on('tick', () => {
+    d3LinkSelection
+      .attr('x1', (d: any) => d.source.x)
+      .attr('y1', (d: any) => d.source.y)
+      .attr('x2', (d: any) => d.target.x)
+      .attr('y2', (d: any) => d.target.y)
+
+    d3NodeSelection.attr('transform', (d: any) => `translate(${d.x},${d.y})`)
+
+    // Surlignage selon hashtags actifs
+    applyHashtagFilter()
+  })
+}
+
+function buildNodesLinks(width: number, height: number) {
+  const allNodes: any[] = []
+  const links: any[] = []
+
+  if (!props.data) return { allNodes, links }
+
+  const tagFamilleMap = tagToFamille.value
+
+  // Noeuds structures (toujours presents)
+  const structureNodes = props.data.structures.map(s => ({
+    id: s.id,
+    type: 'structure',
+    label: s.nom,
+    famille: s.famille_principale,
+    familles_secondaires: s.familles_secondaires ?? [],
+    hashtags: s.hashtags,
+    color: FAMILLE_COLORS[s.famille_principale] ?? '#888',
+    r: 8,
+  }))
+  allNodes.push(...structureNodes)
+
+  // Layer Familles : 6 noeuds famille fixes en etoile + liens primaires/secondaires
+  if (showFamilles.value) {
+    const familyNodes = [1, 2, 3, 4, 5, 6].map(id => ({
+      id: `family-${id}`,
+      type: 'family',
+      familleId: id,
+      label: FAMILLE_LABELS[id],
+      color: FAMILLE_COLORS[id],
+      r: 32,
+      x: width / 2 + Math.cos((id - 1) * Math.PI * 2 / 6) * 180,
+      y: height / 2 + Math.sin((id - 1) * Math.PI * 2 / 6) * 180,
+      fx: width / 2 + Math.cos((id - 1) * Math.PI * 2 / 6) * 180,
+      fy: height / 2 + Math.sin((id - 1) * Math.PI * 2 / 6) * 180,
+    }))
+    allNodes.push(...familyNodes)
+
+    structureNodes.forEach(s => {
+      links.push({
+        source: s.id,
+        target: `family-${s.famille}`,
+        type: 'primary',
+        strength: 0.55,
+      })
+      ;(s.familles_secondaires as number[]).forEach((f: number) => {
+        links.push({
+          source: s.id,
+          target: `family-${f}`,
+          type: 'secondary',
+          strength: 0.45,
+        })
+      })
+    })
+  }
+
+  // Layer Pratiques : noeuds hashtag + liens structure -> hashtag
+  if (showPratiques.value) {
+    const uniqueTags = new Set<string>()
+    props.data.structures.forEach(s => s.hashtags.forEach(t => uniqueTags.add(t)))
+    const tagsArr = Array.from(uniqueTags).sort()
+
+    // Si seul layer Pratiques actif : disposition radiale comme reference
+    // Si superpose avec Familles : laisser la simulation placer
+    const radius = Math.min(width, height) * 0.32
+    const hashtagNodes = tagsArr.map((tag, i) => {
+      const famId = tagFamilleMap[tag]
+      const strokeColor = famId != null ? FAMILLE_COLORS[famId] : '#888'
+      const node: any = {
+        id: `hashtag-${tag}`,
+        type: 'hashtag',
+        label: tag.startsWith('#') ? tag.slice(1) : tag,
+        tag,
+        fill: 'var(--nav-bg-alt)',
+        stroke: strokeColor,
+        color: strokeColor,
+        r: 22,
+      }
+      if (!showFamilles.value) {
+        const angle = (i / tagsArr.length) * Math.PI * 2
+        node.x = width / 2 + Math.cos(angle) * radius
+        node.y = height / 2 + Math.sin(angle) * radius
+      }
+      return node
+    })
+    allNodes.push(...hashtagNodes)
+
+    structureNodes.forEach(s => {
+      s.hashtags.forEach(tag => {
+        if (uniqueTags.has(tag)) {
+          links.push({
+            source: s.id,
+            target: `hashtag-${tag}`,
+            type: 'practice',
+            strength: 0.3,
+          })
+        }
+      })
+    })
+  }
+
+  return { allNodes, links }
+}
+
+function clampPopoverPosition(rect: DOMRect, evtX: number, evtY: number, w = 280, h = 180) {
+  const margin = 12
+  let x = evtX - rect.left + 14
+  let y = evtY - rect.top + 10
+  if (x + w > rect.width - margin) {
+    x = Math.max(margin, rect.width - w - margin)
+  }
+  if (y + h > rect.height - margin) {
+    y = Math.max(margin, rect.height - h - margin)
+  }
+  return { x, y }
+}
+
+function structuresForFamille(famId: number): { id: string; nom: string }[] {
+  if (!props.data) return []
+  return props.data.structures
+    .filter(s =>
+      s.famille_principale === famId
+      || (s.familles_secondaires ?? []).includes(famId)
+    )
+    .sort((a, b) => a.nom.localeCompare(b.nom, 'fr'))
+    .map(s => ({ id: s.id, nom: s.nom }))
+}
+
+function openFamillePopover(d: any, event: any, svgEl: SVGElement) {
+  const rect = (svgEl as HTMLElement).getBoundingClientRect()
+  const famId = d.familleId as number
+  const desc = FAMILLE_DESCRIPTIONS[famId] ?? ''
+  const structures = structuresForFamille(famId)
+  const { x, y } = clampPopoverPosition(rect, event.clientX, event.clientY, 280, 280)
+  popover.value = {
+    open: true,
+    kind: 'famille',
+    x,
+    y,
+    title: FAMILLE_LABELS[famId] ?? '',
+    body: desc,
+    color: FAMILLE_COLORS[famId] ?? '#000',
+    structures,
+    familleId: famId,
+    famillesCount: 0,
+  }
+}
+
+function openHashtagPopover(d: any, event: any, svgEl: SVGElement) {
+  const rect = (svgEl as HTMLElement).getBoundingClientRect()
+  const tag = d.tag as string
+  const structures = structuresForHashtag(tag)
+  const famId = tagToFamille.value[tag]
+  const color = famId != null ? FAMILLE_COLORS[famId] : '#444'
+  // Compter les familles distinctes parmi les porteuses (famille_principale)
+  const famSet = new Set<number>()
+  if (props.data) {
+    props.data.structures
+      .filter(s => s.hashtags.includes(tag))
+      .forEach(s => famSet.add(s.famille_principale))
+  }
+  const { x, y } = clampPopoverPosition(rect, event.clientX, event.clientY, 280, 220)
+  popover.value = {
+    open: true,
+    kind: 'hashtag',
+    x,
+    y,
+    title: tag.startsWith('#') ? tag : '#' + tag,
+    body: '',
+    color,
+    structures,
+    familleId: null,
+    famillesCount: famSet.size,
+  }
+}
+
+function applyHashtagFilter() {
+  if (!d3NodeSelection || !d3LinkSelection) return
+  if (filteredStructureIds.value) {
+    const ids = filteredStructureIds.value
+    d3NodeSelection.filter((d: any) => d.type === 'structure').select('circle')
+      .attr('opacity', (d: any) => ids.has(d.id) ? 1 : 0.1)
+    d3LinkSelection.attr('opacity', (d: any) => {
+      const srcId = typeof d.source === 'object' ? d.source.id : d.source
+      const tgtId = typeof d.target === 'object' ? d.target.id : d.target
+      return ids.has(srcId) || ids.has(tgtId) ? 1 : 0.05
+    })
+  } else {
+    d3NodeSelection.select('circle').attr('opacity', 1)
+    d3LinkSelection.attr('opacity', 1)
+  }
+}
+
+// Declencher quand l'onglet devient visible
+watch(() => props.active, (val) => {
+  if (val && import.meta.client && props.data) {
+    requestAnimationFrame(() => requestAnimationFrame(() => initGraph()))
+  }
+})
+
+// Relancer si les donnees arrivent apres l'activation
+watch(() => props.data, (val) => {
+  if (val && props.active && import.meta.client) {
+    requestAnimationFrame(() => requestAnimationFrame(() => initGraph()))
+  }
+})
+
+// Re-appliquer le filtre visuel sans rebuild complet
+watch(activeHashtags, () => {
+  applyHashtagFilter()
+  if (simulation) simulation.alpha(0.01).restart()
+}, { deep: true })
+
+// Watchers layers : rebuild simulation
+watch([showFamilles, showPratiques], () => {
+  closePopover()
+  if (import.meta.client && props.data && props.active) {
+    requestAnimationFrame(() => requestAnimationFrame(() => initGraph()))
+  }
+})
+
+// Toggle sidebar : largeur SVG change -> reinit graphe apres transition CSS
+watch(sidebarOpen, () => {
+  if (!import.meta.client || !props.active || !props.data) return
+  setTimeout(() => {
+    requestAnimationFrame(() => requestAnimationFrame(() => initGraph()))
+  }, 220)
+})
+
+onMounted(async () => {
+  if (import.meta.client && props.data && props.active) {
+    await nextTick()
+    initGraph()
+  }
+})
+
+onUnmounted(() => {
+  if (simulation) simulation.stop()
+})
+</script>
diff --git a/components/HashtagFilter.vue b/components/HashtagFilter.vue
new file mode 100644
index 0000000..467d29b
--- /dev/null
+++ b/components/HashtagFilter.vue
@@ -0,0 +1,97 @@
+<template>
+  <div class="hashtag-filter" style="padding: 8px 12px; background: var(--nav-surface);">
+    <!-- Filtres famille -->
+    <div style="margin-bottom: 6px;">
+      <span class="filter-label">FAMILLES</span>
+      <div class="chips-row">
+        <span
+          v-for="fam in FAMILLES"
+          :key="fam.id"
+          class="chip"
+          :style="selectedFamille === fam.id
+            ? `background: ${fam.color}; color: white; font-weight: 600; border: 2px solid ${fam.color};`
+            : `background: var(--nav-bg-alt); color: ${fam.color}; border: 2px solid ${fam.color}; font-weight: 600;`"
+          @click="toggleFamille(fam.id)"
+        >{{ fam.shortLabel }}</span>
+      </div>
+    </div>
+
+    <!-- Filtres hashtags avec toggle -->
+    <div>
+      <div style="display: flex; align-items: center; justify-content: space-between; margin-bottom: 4px;">
+        <span class="filter-label">HASHTAGS</span>
+        <button
+          @click="hashtagsVisible = !hashtagsVisible"
+          style="font-size: 0.7rem; color: var(--nav-text-muted); background: none; border: none; cursor: pointer; text-decoration: underline; padding: 0;"
+        >{{ hashtagsVisible ? 'Replier' : 'Afficher (' + props.allHashtags.length + ')' }}</button>
+      </div>
+      <div v-if="hashtagsVisible" class="chips-row">
+        <span
+          v-for="tag in props.allHashtags"
+          :key="tag"
+          class="chip chip-small"
+          :style="selectedHashtags.includes(tag)
+            ? 'background: var(--nav-primary); color: var(--nav-text-on-primary); font-weight: 600;'
+            : 'background: var(--nav-bg-alt); color: var(--nav-text-muted);'"
+          @click="toggleHashtag(tag)"
+        >{{ tag }}</span>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+const FAMILLES = [
+  { id: 1, shortLabel: 'Réemploi', color: '#a85d3e' },
+  { id: 2, shortLabel: 'Frugalité', color: '#c4a472' },
+  { id: 3, shortLabel: 'Social', color: '#d4a017' },
+  { id: 4, shortLabel: 'Collectifs', color: '#5a7a4a' },
+  { id: 5, shortLabel: 'Urbanisme', color: '#3d6a8c' },
+  { id: 6, shortLabel: 'Recherche', color: '#6b3fa0' },
+]
+
+const props = defineProps<{
+  allHashtags: string[]
+  selectedHashtags: string[]
+  selectedFamille: number | null
+}>()
+
+const emit = defineEmits<{
+  'update:selectedHashtags': [v: string[]]
+  'update:selectedFamille': [v: number | null]
+}>()
+
+const hashtagsVisible = ref(false)
+
+function toggleFamille(id: number) {
+  emit('update:selectedFamille', props.selectedFamille === id ? null : id)
+}
+
+function toggleHashtag(tag: string) {
+  const current = props.selectedHashtags
+  emit('update:selectedHashtags',
+    current.includes(tag) ? current.filter(t => t !== tag) : [...current, tag]
+  )
+}
+</script>
+
+<style scoped>
+.filter-label {
+  font-size: 0.7rem;
+  font-weight: 700;
+  letter-spacing: 0.08em;
+  color: var(--nav-text-muted);
+  display: block;
+  margin-bottom: 4px;
+}
+.chips-row { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 4px; }
+.chip {
+  cursor: pointer;
+  padding: 3px 10px;
+  border-radius: 9999px;
+  font-size: 0.75rem;
+  transition: all 0.15s;
+  user-select: none;
+}
+.chip-small { font-size: 0.7rem; padding: 2px 8px; }
+</style>
diff --git a/components/IntentionBanner.vue b/components/IntentionBanner.vue
new file mode 100644
index 0000000..888f17d
--- /dev/null
+++ b/components/IntentionBanner.vue
@@ -0,0 +1,76 @@
+<template>
+  <Teleport to="body">
+    <Transition name="fade">
+      <div
+        v-if="visible"
+        class="intention-overlay"
+        style="
+          position: fixed;
+          inset: 0;
+          z-index: 2000;
+          background: rgba(20, 18, 14, 0.85);
+          display: flex;
+          align-items: center;
+          justify-content: center;
+          padding: 24px;
+        "
+        @click.self="dismiss"
+      >
+        <div style="
+          max-width: 540px;
+          width: 100%;
+          background: #faf8f5;
+          border-radius: 8px;
+          padding: 32px;
+          color: #2c2416;
+        ">
+          <p style="font-size: 1rem; line-height: 1.7; margin: 0 0 12px 0;">
+            Cette carte recense les réseaux, collectifs, agences et projets où des
+            pensées écologiques deviennent des pratiques d'architecture et d'habiter.
+          </p>
+          <p style="font-size: 0.875rem; line-height: 1.6; opacity: 0.75; margin: 0 0 24px 0;">
+            Elle ne prétend pas à l'exhaustivité. Elle est un geste politique :
+            rendre visible ce qui se transforme, comment, par qui, où.
+            5 familles et des hashtags vous permettent d'explorer.
+          </p>
+          <button
+            @click="dismiss"
+            style="
+              background: #2c2416;
+              color: #faf8f5;
+              border: none;
+              border-radius: 4px;
+              padding: 10px 24px;
+              font-size: 0.875rem;
+              font-weight: 600;
+              cursor: pointer;
+              width: 100%;
+            "
+          >Explorer la carte</button>
+        </div>
+      </div>
+    </Transition>
+  </Teleport>
+</template>
+
+<script setup lang="ts">
+const visible = ref(false)
+
+onMounted(() => {
+  if (typeof localStorage !== 'undefined' && !localStorage.getItem('aep_intention_seen')) {
+    visible.value = true
+  }
+})
+
+function dismiss() {
+  visible.value = false
+  if (typeof localStorage !== 'undefined') {
+    localStorage.setItem('aep_intention_seen', '1')
+  }
+}
+</script>
+
+<style scoped>
+.fade-enter-active, .fade-leave-active { transition: opacity 0.3s; }
+.fade-enter-from, .fade-leave-to { opacity: 0; }
+</style>
diff --git a/components/NavMapV2.vue b/components/NavMapV2.vue
new file mode 100644
index 0000000..e0e3b43
--- /dev/null
+++ b/components/NavMapV2.vue
@@ -0,0 +1,243 @@
+<template>
+  <div class="relative w-full h-full">
+    <div ref="mapContainer" class="w-full h-full rounded-none" />
+  </div>
+</template>
+
+<script setup lang="ts">
+import type { Map, Marker, DivIcon } from 'leaflet'
+import type { StructureV2 } from '~/types/structure-v2'
+
+// Couleurs par famille (synchronisées avec v2-bifurcation.css)
+const FAMILLE_COLORS: Record<number, string> = {
+  1: '#a85d3e',
+  2: '#c4a472',
+  3: '#d4a017',
+  4: '#5a7a4a',
+  5: '#3d6a8c',
+}
+
+const props = defineProps<{
+  structures: StructureV2[]
+  selectedId?: string | null
+}>()
+
+const emit = defineEmits<{
+  'select-structure': [id: string]
+}>()
+
+const mapContainer = ref<HTMLElement | null>(null)
+let mapInstance: Map | null = null
+let clusterGroup: any = null
+const markers = new Map<string, Marker>()
+let tileLayerInstance: any = null
+
+function getFamilleColor(famille: number): string {
+  return FAMILLE_COLORS[famille] ?? '#888888'
+}
+
+function createPinIcon(famille: number, isSelected = false): DivIcon {
+  const L = (window as any).L
+  const bg = getFamilleColor(famille)
+  const size = isSelected ? 20 : 14
+  const border = isSelected ? 'white' : 'rgba(255,255,255,0.7)'
+  const shadow = isSelected ? `0 0 0 4px ${bg}55` : 'none'
+
+  return L.divIcon({
+    className: '',
+    html: `<div style="
+      width: ${size}px;
+      height: ${size}px;
+      border-radius: 50%;
+      background: ${bg};
+      border: 2px solid ${border};
+      box-shadow: ${shadow};
+      transition: all 0.2s;
+    "></div>`,
+    iconSize: [size, size],
+    iconAnchor: [size / 2, size / 2],
+    popupAnchor: [0, -(size / 2 + 4)],
+  })
+}
+
+async function initMap() {
+  if (!mapContainer.value) return
+
+  const Lmod = await import('leaflet')
+  const L: any = (Lmod as any).default || Lmod
+  await import('leaflet/dist/leaflet.css')
+  // @ts-ignore
+  await import('leaflet.markercluster/dist/MarkerCluster.css')
+  // @ts-ignore
+  await import('leaflet.markercluster/dist/MarkerCluster.Default.css')
+
+  // Installer L globalement AVANT le plugin
+  ;(window as any).L = L
+  // @ts-ignore
+  await import('leaflet.markercluster')
+  const MarkerClusterGroup = L.MarkerClusterGroup
+
+  mapInstance = L.map(mapContainer.value, {
+    center: [46.6, 2.3],
+    zoom: 5,
+    zoomControl: true,
+    attributionControl: true,
+    minZoom: 2,
+    maxZoom: 18,
+  })
+
+  const isDark = typeof document !== 'undefined' && document.documentElement.classList.contains('dark')
+  const tileUrl = isDark
+    ? 'https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png'
+    : 'https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}{r}.png'
+
+  tileLayerInstance = L.tileLayer(tileUrl, {
+    attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors © <a href="https://carto.com/attributions">CARTO</a>',
+    maxZoom: 19,
+  })
+  tileLayerInstance.addTo(mapInstance!)
+
+  clusterGroup = new MarkerClusterGroup({
+    disableClusteringAtZoom: 14,
+    maxClusterRadius: 50,
+    showCoverageOnHover: false,
+    iconCreateFunction: (cluster: any) => {
+      const count = cluster.getChildCount()
+      return L.divIcon({
+        html: `<div style="
+          width: 36px; height: 36px; border-radius: 50%;
+          background: var(--nav-primary);
+          color: var(--nav-text-on-primary);
+          display: flex; align-items: center; justify-content: center;
+          font-weight: 700; font-size: 13px;
+          border: 2px solid white;
+          font-family: var(--nav-font);
+        ">${count}</div>`,
+        className: '',
+        iconSize: [36, 36],
+        iconAnchor: [18, 18],
+      })
+    },
+  })
+
+  mapInstance.addLayer(clusterGroup)
+  updateMarkers(L)
+}
+
+function updateMarkers(L?: any) {
+  if (!mapInstance || !clusterGroup) return
+  const leaflet = L || (window as any).L
+  if (!leaflet) return
+
+  clusterGroup.clearLayers()
+  markers.clear()
+
+  const structuresWithCoords = props.structures.filter(
+    (s) => s.latitude != null && s.longitude != null
+  )
+
+  structuresWithCoords.forEach((structure) => {
+    const isSelected = structure.id === props.selectedId
+    const icon = createPinIcon(structure.famille_principale, isSelected)
+
+    const marker = leaflet.marker([structure.latitude!, structure.longitude!], { icon })
+
+    const hashtagsHtml = structure.hashtags.slice(0, 2)
+      .map(h => `<span style="font-size:10px;color:var(--nav-text-muted);">${h}</span>`)
+      .join(' ')
+
+    marker.bindPopup(`
+      <div style="font-family: var(--nav-font); min-width: 190px; padding: 4px 0;">
+        <div style="font-weight: 700; color: var(--nav-text); margin-bottom: 2px; font-size: 0.9rem;">${structure.nom}</div>
+        <div style="font-size: 11px; color: var(--nav-text-muted); margin-bottom: 4px;">${structure.type_principal} · ${structure.ville}, ${structure.pays}</div>
+        ${hashtagsHtml ? `<div style="margin-bottom: 6px;">${hashtagsHtml}</div>` : ''}
+        <div style="font-size: 11px; color: var(--nav-text); line-height: 1.4; margin-bottom: 8px;">${structure.description_courte.slice(0, 100)}…</div>
+        <button onclick="document.dispatchEvent(new CustomEvent('nav-v2-select', {detail:'${structure.id}'}))" style="
+          font-size: 12px;
+          color: var(--nav-primary-solid);
+          text-decoration: underline;
+          background: none;
+          border: none;
+          cursor: pointer;
+          padding: 0;
+          font-family: var(--nav-font);
+        ">Voir la fiche →</button>
+      </div>
+    `, { maxWidth: 260 })
+
+    marker.on('click', () => emit('select-structure', structure.id))
+
+    markers.set(structure.id, marker)
+    clusterGroup.addLayer(marker)
+  })
+}
+
+// Ecouter l'event custom depuis les popups Leaflet
+function onNavV2Select(e: CustomEvent) {
+  emit('select-structure', e.detail)
+}
+
+watch(
+  () => props.structures,
+  () => updateMarkers(),
+  { deep: false }
+)
+
+watch(
+  () => props.selectedId,
+  (newId, oldId) => {
+    if (!mapInstance) return
+    const leaflet = (window as any).L
+    if (!leaflet) return
+
+    if (oldId != null) {
+      const oldMarker = markers.get(oldId)
+      const oldStructure = props.structures.find(s => s.id === oldId)
+      if (oldMarker && oldStructure) {
+        oldMarker.setIcon(createPinIcon(oldStructure.famille_principale, false))
+      }
+    }
+    if (newId != null) {
+      const newMarker = markers.get(newId)
+      const newStructure = props.structures.find(s => s.id === newId)
+      if (newMarker && newStructure) {
+        newMarker.setIcon(createPinIcon(newStructure.famille_principale, true))
+        const latLng = newMarker.getLatLng()
+        mapInstance.panTo(latLng, { animate: true })
+      }
+    }
+  }
+)
+
+function updateTileTheme(dark: boolean) {
+  if (!mapInstance || !tileLayerInstance) return
+  const L = (window as any).L
+  if (!L) return
+  const url = dark
+    ? 'https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png'
+    : 'https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}{r}.png'
+  tileLayerInstance.setUrl(url)
+}
+
+let themeObserver: MutationObserver | null = null
+
+onMounted(() => {
+  initMap()
+  document.addEventListener('nav-v2-select', onNavV2Select as EventListener)
+
+  themeObserver = new MutationObserver(() => {
+    const dark = document.documentElement.classList.contains('dark')
+    updateTileTheme(dark)
+  })
+  themeObserver.observe(document.documentElement, { attributes: true, attributeFilter: ['class'] })
+})
+
+onUnmounted(() => {
+  document.removeEventListener('nav-v2-select', onNavV2Select as EventListener)
+  themeObserver?.disconnect()
+  if (mapInstance) {
+    mapInstance.remove()
+    mapInstance = null
+  }
+})
+</script>
diff --git a/pages/index.vue b/pages/index.vue
index 4d42073..71107c3 100644
--- a/pages/index.vue
+++ b/pages/index.vue
@@ -1,56 +1,144 @@
 <template>
   <div class="flex h-full overflow-hidden" style="background: var(--nav-bg);">
 
-    <!-- ═══════════════════════════════════════ SIDEBAR DESKTOP (≥ 1024px) -->
-    <div class="hidden lg:flex w-80 shrink-0 flex-col overflow-hidden">
-      <NavSidebar
-        :search="search"
-        :modeValue="territoireMode"
-        :echelle="echelle"
-        :fonctions="fonctions"
-        :territoire="territoire"
-        :echelleCount="echelleCount"
-        :fonctionCount="fonctionCount"
-        :territoireCount="territoireCount"
-        :resultCount="filtered.length"
-        :orgs="filtered"
-        :selectedId="selectedId"
-        :hasActiveFilters="hasActiveFilters"
-        :pending="pending"
-        @update:search="onSearch"
-        @update:mode="onMode"
-        @update:echelle="onEchelle"
-        @update:fonctions="onFonctions"
-        @update:territoire="onTerritoire"
-        @select-org="onSelectOrg"
-        @hover-org="onHoverOrg"
-        @reset-filters="resetFilters"
+    <!-- ═══════════════════════════════════════ SIDEBAR DESKTOP (>= 1024px) -->
+    <div class="hidden lg:block overflow-y-auto" style="width: 320px; min-width: 320px; flex-shrink: 0; border-right: 1px solid var(--nav-bg-alt); height: 100%;">
+
+      <!-- IntentionBanner s'auto-affiche via Teleport (overlay plein ecran) -->
+      <IntentionBanner />
+
+      <!-- Filtres familles + hashtags -->
+      <HashtagFilter
+        :allHashtags="allHashtags"
+        :selectedHashtags="selectedHashtags"
+        :selectedFamille="selectedFamille"
+        @update:selectedHashtags="selectedHashtags = $event"
+        @update:selectedFamille="selectedFamille = $event"
       />
+
+      <!-- Separateur -->
+      <div style="height: 1px; background: var(--nav-bg-alt);"></div>
+
+      <!-- Barre de recherche -->
+      <div class="px-3 py-2" style="border-bottom: 1px solid var(--nav-bg-alt);">
+        <label class="sidebar-search-label" aria-label="Rechercher une structure">
+          <svg width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" class="sidebar-search-icon">
+            <circle cx="11" cy="11" r="8"/>
+            <line x1="21" y1="21" x2="16.65" y2="16.65"/>
+          </svg>
+          <input
+            v-model="search"
+            type="search"
+            placeholder="Rechercher une structure..."
+            class="sidebar-search-input"
+            autocomplete="off"
+          />
+          <button
+            v-if="search"
+            type="button"
+            class="sidebar-search-clear"
+            aria-label="Effacer"
+            @click.stop="search = ''"
+          >
+            <svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round">
+              <line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/>
+            </svg>
+          </button>
+        </label>
+      </div>
+
+      <!-- Header compteur + reset -->
+      <div class="flex items-center justify-between px-4 py-2" style="border-bottom: 1px solid var(--nav-bg-alt);">
+        <span class="text-xs font-bold uppercase tracking-widest" style="color: var(--nav-text-muted);">
+          {{ filtered.length }} structure{{ filtered.length > 1 ? 's' : '' }}
+        </span>
+        <button
+          v-if="hasActiveFilters"
+          @click="resetFilters"
+          class="text-xs underline hover:opacity-70"
+          style="color: var(--nav-text-muted);"
+        >Effacer les filtres</button>
+      </div>
+
+      <!-- Liste fiches (sidebar entiere scroll - pas de scroll interne) -->
+      <div class="px-3 py-2 space-y-1.5">
+        <div v-if="pending" class="flex items-center justify-center py-8" style="color: var(--nav-text-muted);">
+          Chargement...
+        </div>
+        <div v-else-if="filtered.length === 0" class="text-center py-8">
+          <p class="text-xs" style="color: var(--nav-text-muted);">Aucun résultat</p>
+        </div>
+        <div
+          v-for="structure in filtered"
+          :key="structure.id"
+          class="rounded-lg px-3 py-2 cursor-pointer transition-all"
+          :style="selectedId === structure.id
+            ? `background: var(--nav-bg-alt); border-left: 3px solid ${familleColor(structure.famille_principale)}; padding-left: 9px;`
+            : 'background: var(--nav-bg); border-left: 3px solid transparent; padding-left: 9px;'"
+          @click="onSelectStructure(structure.id)"
+          @mouseenter="hoveredId = structure.id"
+          @mouseleave="hoveredId = null"
+        >
+          <div class="flex items-start justify-between gap-1.5">
+            <span class="font-semibold text-sm leading-snug" style="color: var(--nav-text);">{{ structure.nom }}</span>
+            <span
+              class="shrink-0 w-2.5 h-2.5 rounded-full mt-1"
+              :style="`background: ${familleColor(structure.famille_principale)};`"
+            />
+          </div>
+          <div class="mt-0.5 text-xs" style="color: var(--nav-text-muted);">{{ structure.type_principal }} - {{ structure.ville }}</div>
+          <div v-if="structure.hashtags.length" class="mt-1 flex flex-wrap gap-1">
+            <span
+              v-for="tag in structure.hashtags.slice(0, 2)"
+              :key="tag"
+              class="text-xs"
+              style="color: var(--nav-text-muted);"
+            >{{ tag }}</span>
+          </div>
+        </div>
+      </div>
+
     </div>
 
     <!-- ═══════════════════════════════════════ ZONE CENTRALE (carte) -->
     <main class="flex-1 flex flex-col overflow-hidden relative">
 
-      <!-- Indicateur source dev -->
-      <div
-        v-if="dataSource === 'seed'"
-        class="absolute top-2 left-2 z-[500] px-2 py-1 rounded text-xs"
-        style="background: var(--nav-accent); color: var(--nav-text);"
-      >
-        Mode dev — données seed
-      </div>
-
-      <!-- ── VUE DESKTOP : Métropole pleine largeur + DOM-TOM row en bas ── -->
+      <!-- ── VUE DESKTOP : Onglets Métro/Outre-mer ── -->
       <div class="hidden lg:flex lg:flex-1 lg:flex-col lg:overflow-hidden">
-        <!-- Carte Métropole — pleine largeur -->
-        <div class="flex flex-col flex-1 overflow-hidden">
+        <!-- Onglets desktop -->
+        <div class="shrink-0 flex" style="background: var(--nav-surface); border-bottom: 1px solid var(--nav-bg-alt);">
+          <button
+            class="px-5 py-2 text-sm font-medium transition-colors"
+            :style="desktopMapView === 'metropole'
+              ? 'color: var(--nav-text); border-bottom: 2px solid var(--nav-primary-solid);'
+              : 'color: var(--nav-text-muted); border-bottom: 2px solid transparent;'"
+            @click="desktopMapView = 'metropole'"
+          >Métropolitain</button>
+          <button
+            class="px-5 py-2 text-sm font-medium transition-colors"
+            :style="desktopMapView === 'outremer'
+              ? 'color: var(--nav-text); border-bottom: 2px solid var(--nav-primary-solid);'
+              : 'color: var(--nav-text-muted); border-bottom: 2px solid transparent;'"
+            @click="desktopMapView = 'outremer'"
+          >Outre-mer</button>
+          <button
+            class="px-5 py-2 text-sm font-medium transition-colors"
+            :style="desktopMapView === 'graphe'
+              ? 'color: var(--nav-text); border-bottom: 2px solid var(--nav-primary-solid);'
+              : 'color: var(--nav-text-muted); border-bottom: 2px solid transparent;'"
+            @click="desktopMapView = 'graphe'"
+          >Vue graphique</button>
+        </div>
+
+        <!-- Carte Métropole desktop -->
+        <div v-show="desktopMapView === 'metropole'" class="flex-1 flex flex-col overflow-hidden">
           <div class="relative flex-1" style="min-height: 200px;">
             <ClientOnly>
-              <NavMap
+              <NavMapV2
                 ref="navMapRef"
-                :orgs="metropoleOrgs"
+                :structures="metropoleStructures"
                 :selectedId="selectedId"
-                @select-org="onSelectOrg"
+                @select-structure="onSelectStructure"
               />
               <template #fallback>
                 <div
@@ -62,35 +150,53 @@
               </template>
             </ClientOnly>
           </div>
-          <ChatbotPlaceholder @highlightOrgs="onHighlightOrgs" />
+          <ChatbotPlaceholder
+            @highlightOrgs="() => {}"
+            @applyHashtag="(tag) => { if (!selectedHashtags.includes(tag)) selectedHashtags = [...selectedHashtags, tag] }"
+          />
         </div>
 
-        <!-- Bandeau DOM-TOM — row horizontale pleine largeur, hauteur fixe -->
-        <div
-          class="shrink-0"
-          style="height: 140px; border-top: 1px solid var(--nav-bg-alt);"
-        >
+        <!-- Carte Outre-mer desktop -->
+        <div v-show="desktopMapView === 'outremer'" class="flex-1 overflow-y-auto" style="background: var(--nav-bg);">
           <ClientOnly>
             <OutremerMap
-              :orgs="outremerOrgs"
-              :selectedId="selectedId"
-              @select-org="onSelectOrg"
+              :orgs="outremerOrgsLegacy"
+              :selectedId="selectedIdLegacyNum"
+              @select-org="() => {}"
             />
             <template #fallback>
-              <div
-                class="flex items-center justify-center h-full text-sm"
-                style="color: var(--nav-text-muted);"
-              >
+              <div class="flex items-center justify-center h-full text-sm" style="color: var(--nav-text-muted);">
                 Chargement…
               </div>
             </template>
           </ClientOnly>
         </div>
+
+        <!-- Vue graphique desktop -->
+        <div v-show="desktopMapView === 'graphe'" class="flex-1 overflow-hidden flex flex-col">
+          <div class="flex-1 overflow-hidden relative">
+            <ClientOnly>
+              <GraphView
+                :data="bifurcationData"
+                :allHashtags="allHashtags"
+                :active="desktopMapView === 'graphe'"
+                @select-structure="onSelectStructure"
+              />
+              <template #fallback>
+                <div class="flex items-center justify-center h-full" style="color: var(--nav-text-muted);">
+                  Chargement du graphe...
+                </div>
+              </template>
+            </ClientOnly>
+          </div>
+          <ChatbotPlaceholder
+            @highlightOrgs="() => {}"
+            @applyHashtag="(tag) => { if (!selectedHashtags.includes(tag)) selectedHashtags = [...selectedHashtags, tag] }"
+          />
+        </div>
       </div>
 
-      <!-- ── VUE MOBILE : Onglets Métro/Outre-mer + carte pleine hauteur + sheet swipable ── -->
-
-      <!-- Onglets Métropolitain / Outre-mer -->
+      <!-- ── VUE MOBILE : Onglets Métro/Outre-mer + sheet swipable ── -->
       <div class="lg:hidden shrink-0 flex" style="background: var(--nav-surface); border-bottom: 1px solid var(--nav-bg-alt);">
         <button
           class="flex-1 py-2 text-sm font-medium transition-colors"
@@ -109,34 +215,30 @@
       </div>
 
       <div class="lg:hidden flex-1 relative overflow-hidden">
-
-        <!-- Carte Métropole -->
+        <!-- Carte mobile Métropole -->
         <div v-show="mobileMapView === 'metropole'" class="absolute inset-0">
           <ClientOnly>
-            <NavMap
+            <NavMapV2
               ref="navMapMobileRef"
-              :orgs="metropoleOrgs"
+              :structures="metropoleStructures"
               :selectedId="selectedId"
-              @select-org="onSelectOrgMobile"
+              @select-structure="onSelectStructureMobile"
             />
             <template #fallback>
-              <div
-                class="w-full h-full flex items-center justify-center"
-                style="background: var(--nav-bg-alt); color: var(--nav-text-muted);"
-              >
+              <div class="w-full h-full flex items-center justify-center" style="background: var(--nav-bg-alt); color: var(--nav-text-muted);">
                 Chargement de la carte…
               </div>
             </template>
           </ClientOnly>
         </div>
 
-        <!-- Carte Outre-mer (scroll vertical, pleine largeur) -->
+        <!-- Carte mobile Outre-mer -->
         <div v-show="mobileMapView === 'outremer'" class="absolute inset-0 overflow-y-auto" style="background: var(--nav-bg);">
           <ClientOnly>
             <OutremerMap
-              :orgs="outremerOrgs"
-              :selectedId="selectedId"
-              @select-org="onSelectOrgMobile"
+              :orgs="outremerOrgsLegacy"
+              :selectedId="selectedIdLegacyNum"
+              @select-org="() => {}"
             />
             <template #fallback>
               <div class="flex items-center justify-center h-48" style="color: var(--nav-text-muted);">
@@ -146,81 +248,65 @@
           </ClientOnly>
         </div>
 
-        <!-- Bottom sheet swipable (Métropole et Outre-mer) -->
+        <!-- Bottom sheet swipable -->
         <ClientOnly>
           <MobileSheet :resultCount="filtered.length" :pending="pending">
-            <!-- Barre recherche -->
+            <!-- Bandeau intention mobile -->
+            <div class="px-3 py-2" style="background: var(--bifurc-banner-bg, #faf8f5); border-bottom: 1px solid var(--bifurc-banner-border, #e0d8cc);">
+              <p class="text-xs leading-relaxed" style="color: var(--bifurc-banner-text, #2c2416); margin: 0;">
+                120 réseaux, collectifs et agences où des pensées écologiques deviennent des pratiques d'architecture.
+              </p>
+            </div>
+
+            <!-- Filtres hashtags mobile -->
+            <div class="px-3 py-2" style="border-bottom: 1px solid var(--nav-bg-alt);">
+              <HashtagFilter
+                :allHashtags="allHashtags"
+                :selectedHashtags="selectedHashtags"
+                :selectedFamille="selectedFamille"
+                @update:selectedHashtags="selectedHashtags = $event"
+                @update:selectedFamille="selectedFamille = $event"
+              />
+            </div>
+
+            <!-- Barre recherche mobile -->
             <div class="px-3 pt-2 pb-2" style="border-bottom: 1px solid var(--nav-bg-alt);">
-              <label class="mobile-search-label" aria-label="Rechercher une organisation">
+              <label class="mobile-search-label" aria-label="Rechercher une structure">
                 <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" style="color: var(--nav-text-muted); flex-shrink: 0;">
                   <circle cx="11" cy="11" r="8"/>
                   <line x1="21" y1="21" x2="16.65" y2="16.65"/>
                 </svg>
                 <input
-                  v-model="mobileSearch"
+                  v-model="search"
                   type="search"
                   placeholder="Rechercher…"
                   class="mobile-search-input"
                   autocomplete="off"
-                  @input="onSearch(mobileSearch)"
                 />
                 <button
-                  v-if="mobileSearch"
+                  v-if="search"
                   type="button"
                   class="mobile-search-clear"
                   aria-label="Effacer"
-                  @click.stop="mobileSearch = ''; onSearch('')"
+                  @click.stop="search = ''"
                 >
                   <svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round">
                     <line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/>
                   </svg>
                 </button>
               </label>
-
-              <!-- Filtres ÉCHELLE — chips style FONCTION -->
-              <div class="mt-2">
-                <span class="text-xs font-bold uppercase tracking-wide block mb-1" style="color: var(--nav-text-muted);">ÉCHELLE</span>
-                <div class="flex flex-wrap gap-1">
-                  <span
-                    v-for="opt in ECHELLES"
-                    :key="opt"
-                    class="cursor-pointer px-2 py-0.5 rounded-full text-xs transition-all"
-                    :style="echelle.includes(opt)
-                      ? 'background: var(--nav-primary); color: var(--nav-text-on-primary); font-weight: 600;'
-                      : 'background: var(--nav-bg-alt); color: var(--nav-text-muted);'"
-                    @click="toggleEchelle(opt)"
-                  >{{ opt }}</span>
-                </div>
-              </div>
-
-              <!-- Filtres FONCTION — chips flex-wrap -->
-              <div class="mt-2">
-                <span class="text-xs font-bold uppercase tracking-wide block mb-1" style="color: var(--nav-text-muted);">FONCTION</span>
-                <div class="flex flex-wrap gap-1">
-                  <span
-                    v-for="fn in FONCTIONS"
-                    :key="fn"
-                    class="cursor-pointer px-2 py-0.5 rounded-full text-xs transition-all"
-                    :style="fonctions.includes(fn)
-                      ? 'background: var(--nav-primary); color: var(--nav-text-on-primary); font-weight: 600;'
-                      : 'background: var(--nav-bg-alt); color: var(--nav-text-muted);'"
-                    @click="toggleFonction(fn)"
-                  >{{ fn }}</span>
-                </div>
-              </div>
-
               <button
                 v-if="hasActiveFilters"
                 @click="resetFilters"
-                class="mt-2 text-xs"
+                class="mt-1 text-xs"
                 style="color: var(--nav-text-muted); text-decoration: underline;"
-              >✕ Effacer les filtres</button>
+              >Effacer les filtres</button>
             </div>
 
-            <!-- Compteur + Liste fiches -->
+            <!-- Liste fiches mobile -->
             <div class="px-3 py-2">
               <div class="text-xs font-bold uppercase tracking-wide mb-2" style="color: var(--nav-text-muted);">
-                {{ filtered.length }} résultat{{ filtered.length > 1 ? 's' : '' }}
+                {{ filtered.length }} structure{{ filtered.length > 1 ? 's' : '' }}
               </div>
               <div v-if="pending" class="flex items-center justify-center py-8" style="color: var(--nav-text-muted);">
                 Chargement des fiches…
@@ -233,46 +319,36 @@
               </div>
               <div class="space-y-2">
                 <div
-                  v-for="org in filtered"
-                  :key="org.Id"
+                  v-for="structure in filtered"
+                  :key="structure.id"
                   class="block rounded-lg p-3 transition-all cursor-pointer"
-                  :style="selectedId === org.Id
-                    ? 'background: var(--nav-bg-alt); border-left: 3px solid var(--nav-accent);'
+                  :style="selectedId === structure.id
+                    ? `background: var(--nav-bg-alt); border-left: 3px solid ${familleColor(structure.famille_principale)};`
                     : 'background: var(--nav-surface); border-left: 3px solid transparent;'"
-                  @click="onSelectOrgMobile(org.Id)"
+                  @click="onSelectStructureMobile(structure.id)"
                 >
                   <div class="flex items-start justify-between gap-2">
-                    <span class="font-semibold text-sm leading-snug" style="color: var(--nav-text);">{{ org.nom }}</span>
+                    <span class="font-semibold text-sm leading-snug" style="color: var(--nav-text);">{{ structure.nom }}</span>
                     <span
-                      v-if="org.echelle"
-                      class="shrink-0 px-2 py-0.5 rounded-full text-xs font-medium"
-                      style="background: var(--nav-bg-alt); color: var(--nav-text-muted);"
-                    >{{ org.echelle }}</span>
-                  </div>
-                  <div v-if="fonctionsList(org).length" class="mt-1 flex flex-wrap gap-1">
-                    <span
-                      v-for="fn in fonctionsList(org)"
-                      :key="fn"
-                      class="px-1.5 py-0.5 rounded text-xs"
-                      style="background: var(--nav-bg-alt); color: var(--nav-text-muted);"
-                    >{{ fn }}</span>
-                  </div>
-                  <div v-if="org.localisation_ville" class="mt-1 text-xs" style="color: var(--nav-text-muted);">
-                    {{ org.localisation_ville }}
+                      class="shrink-0 w-2.5 h-2.5 rounded-full mt-1"
+                      :style="`background: ${familleColor(structure.famille_principale)};`"
+                    />
                   </div>
+                  <div class="mt-0.5 text-xs" style="color: var(--nav-text-muted);">{{ structure.type_principal }} · {{ structure.ville }}</div>
                 </div>
               </div>
             </div>
           </MobileSheet>
         </ClientOnly>
       </div>
-
     </main>
 
-    <!-- ═══════════════════════════════════════ MODAL FICHE (desktop) -->
-    <FicheModal
+    <!-- ═══════════════════════════════════════ MODAL FICHE V2 (desktop) -->
+    <FicheModalV2
       v-model="ficheModalOpen"
-      :orgId="ficheModalId"
+      :structureId="ficheModalId"
+      :data="bifurcationData"
+      @update:structureId="ficheModalId = $event"
     />
 
     <!-- ═══════════════════════════════════════ BOUTON CHATBOT FLOTTANT (mobile) -->
@@ -301,268 +377,141 @@
     <ChatbotSheet
       :modelValue="chatbotOpen"
       @update:modelValue="chatbotOpen = $event"
-      @highlightOrgs="onHighlightOrgs"
+      @highlightOrgs="() => {}"
     />
 
   </div>
 </template>
 
 <script setup lang="ts">
-import type { Org } from '~/types/org'
+import type { ReseauxBifurcationData, StructureV2 } from '~/types/structure-v2'
 
-// ── URL query params sync ─────────────────────────────────────────────────
-const route = useRoute()
-const router = useRouter()
-
-const search = ref<string>((route.query.q as string) ?? '')
-const echelle = ref<string[]>(
-  route.query.echelle
-    ? (route.query.echelle as string).split(',').filter(Boolean)
-    : []
-)
-const fonctions = ref<string[]>(
-  route.query.fonctions
-    ? (route.query.fonctions as string).split(',').filter(Boolean)
-    : []
-)
-const territoire = ref<string | null>((route.query.territoire as string) ?? null)
-const territoireMode = ref<string>(
-  (route.query.mode as string) === 'outremer' ? 'outremer' : 'metropole'
-)
-
-const selectedId = ref<number | null>(null)
-const chatbotOpen = ref(false)
-const ficheModalOpen = ref(false)
-const ficheModalId = ref<number | null>(null)
-const mobileMapView = ref<'metropole' | 'outremer'>('metropole')
-// Surlignage temporaire (5 sec) suite à une réponse chatbot
-// → sélectionne le premier ID recommandé sur la carte, puis remet à null
-let highlightTimer: ReturnType<typeof setTimeout> | null = null
-const prevSelectedId = ref<number | null>(null)
-
-function onHighlightOrgs(ids: (number | string)[]) {
-  if (!ids.length) return
-  const firstId = typeof ids[0] === 'string' ? parseInt(ids[0], 10) : ids[0]
-  if (isNaN(firstId)) return
-
-  // Sauvegarde la sélection courante
-  prevSelectedId.value = selectedId.value
-  selectedId.value = firstId
-
-  if (highlightTimer) clearTimeout(highlightTimer)
-  highlightTimer = setTimeout(() => {
-    // Restaure la sélection précédente (ou null)
-    selectedId.value = prevSelectedId.value
-    prevSelectedId.value = null
-    highlightTimer = null
-  }, 5000)
+// ── Couleurs familles ──────────────────────────────────────────────────────
+const FAMILLE_COLORS: Record<number, string> = {
+  1: '#a85d3e',
+  2: '#c4a472',
+  3: '#d4a017',
+  4: '#5a7a4a',
+  5: '#3d6a8c',
+  6: '#6b3fa0',
 }
 
-// Ref locale barre de recherche mobile (synchronisée avec search via onSearch)
-const mobileSearch = ref<string>((route.query.q as string) ?? '')
+function familleColor(f: number): string {
+  return FAMILLE_COLORS[f] ?? '#888'
+}
 
-// Refs vers les instances NavMap (desktop + mobile séparées via deux <ClientOnly>)
+// ── État UI ────────────────────────────────────────────────────────────────
+const selectedId = ref<string | null>(null)
+const hoveredId = ref<string | null>(null)
+const ficheModalOpen = ref(false)
+const ficheModalId = ref<string | null>(null)
+const chatbotOpen = ref(false)
+const mobileMapView = ref<'metropole' | 'outremer'>('metropole')
+const desktopMapView = ref<'metropole' | 'outremer' | 'graphe'>('metropole')
+
+// Filtres
+const search = ref('')
+const selectedFamille = ref<number | null>(null)
+const selectedHashtags = ref<string[]>([])
+
+// Refs cartes
 const navMapRef = ref<any>(null)
 const navMapMobileRef = ref<any>(null)
 
-// Sync URL <-> état filtres
-function syncUrl() {
-  const q: Record<string, string> = {}
-  if (search.value) q.q = search.value
-  if (echelle.value.length) q.echelle = echelle.value.join(',')
-  if (fonctions.value.length) q.fonctions = fonctions.value.join(',')
-  if (territoire.value) q.territoire = territoire.value
-  if (territoireMode.value === 'outremer') q.mode = 'outremer'
-  router.replace({ query: Object.keys(q).length ? q : undefined })
+// ── Données V2 - JSON statique ─────────────────────────────────────────────
+const bifurcationData = ref<ReseauxBifurcationData | null>(null)
+const pending = ref(true)
+
+onMounted(async () => {
+  try {
+    bifurcationData.value = await $fetch<ReseauxBifurcationData>('/data/reseaux-bifurcation.json')
+  } catch (e) {
+    console.error('Erreur chargement reseaux-bifurcation.json', e)
+  } finally {
+    pending.value = false
+  }
+})
+
+const structures = computed<StructureV2[]>(() => bifurcationData.value?.structures ?? [])
+
+// Tous les hashtags uniques triés
+const allHashtags = computed<string[]>(() => {
+  const set = new Set<string>()
+  structures.value.forEach(s => s.hashtags.forEach(h => set.add(h)))
+  return Array.from(set).sort()
+})
+
+// ── Filtrage ───────────────────────────────────────────────────────────────
+const filtered = computed<StructureV2[]>(() => {
+  let result = structures.value
+
+  // Filtre texte
+  if (search.value.trim()) {
+    const q = search.value.toLowerCase()
+    result = result.filter(
+      s =>
+        s.nom.toLowerCase().includes(q) ||
+        s.ville.toLowerCase().includes(q) ||
+        s.description_courte.toLowerCase().includes(q) ||
+        s.hashtags.some(h => h.toLowerCase().includes(q))
+    )
+  }
+
+  // Filtre famille - F6 = badge_f6_recherche_politique, pas famille_principale
+  if (selectedFamille.value !== null) {
+    if (selectedFamille.value === 6) {
+      result = result.filter(s => (s.badges as any)?.f6_recherche_politique === true)
+    } else {
+      result = result.filter(
+        s => s.famille_principale === selectedFamille.value ||
+          (s.familles_secondaires ?? []).includes(selectedFamille.value!)
+      )
+    }
+  }
+
+  // Filtre hashtags (AND logique si plusieurs)
+  if (selectedHashtags.value.length) {
+    result = result.filter(
+      s => selectedHashtags.value.every(h => s.hashtags.includes(h))
+    )
+  }
+
+  return result
+})
+
+const hasActiveFilters = computed(
+  () => !!search.value || selectedFamille.value !== null || selectedHashtags.value.length > 0
+)
+
+function resetFilters() {
+  search.value = ''
+  selectedFamille.value = null
+  selectedHashtags.value = []
 }
 
-// Sauvegarde les filtres courants dans sessionStorage pour le bouton retour des fiches
-function storeFiltersForBack() {
-  if (typeof window === 'undefined') return
-  const q: Record<string, string> = {}
-  if (search.value) q.q = search.value
-  if (echelle.value.length) q.echelle = echelle.value.join(',')
-  if (fonctions.value.length) q.fonctions = fonctions.value.join(',')
-  if (territoire.value) q.territoire = territoire.value
-  if (territoireMode.value === 'outremer') q.mode = 'outremer'
-  const qs = new URLSearchParams(q).toString()
-  sessionStorage.setItem('nav_back_filters', qs)
-}
+// Structures métropole (pays != DOM-TOM, et avec coordonnées)
+// Pour simplifier : toutes les structures (la carte gère les sans-coords)
+const metropoleStructures = computed<StructureV2[]>(() => filtered.value)
 
-function onSearch(v: string) { search.value = v; syncUrl(); storeFiltersForBack() }
-function onMode(v: string) { territoireMode.value = v; syncUrl(); storeFiltersForBack() }
-function onEchelle(v: string[]) { echelle.value = v; syncUrl(); storeFiltersForBack() }
-function onFonctions(v: string[]) { fonctions.value = v; syncUrl(); storeFiltersForBack() }
-function onTerritoire(v: string | null) { territoire.value = v; syncUrl(); storeFiltersForBack() }
+// Outre-mer : pas de structures V2 DOM-TOM pour l'instant - garder le composant existant vide
+// OutremerMap attend le format Org legacy - on passe un tableau vide
+const outremerOrgsLegacy = computed(() => [])
+const selectedIdLegacyNum = computed(() => null)
 
-function onSelectOrg(id: number) {
+// ── Sélection ─────────────────────────────────────────────────────────────
+function onSelectStructure(id: string) {
   selectedId.value = selectedId.value === id ? null : id
-  // Desktop : ouvrir le modal fiche
   if (typeof window !== 'undefined' && window.innerWidth >= 1024) {
     ficheModalId.value = id
     ficheModalOpen.value = true
   }
 }
 
-// Tap card mobile → ouvre la fiche détaillée
-function onSelectOrgMobile(id: number) {
+function onSelectStructureMobile(id: string) {
   selectedId.value = id
-  storeFiltersForBack()
-  router.push(`/fiche/${id}`)
+  ficheModalId.value = id
+  ficheModalOpen.value = true
 }
 
-function onHoverOrg(id: number | null) {
-  if (id !== null) selectedId.value = id
-}
-
-const hasActiveFilters = computed(() =>
-  !!search.value || echelle.value.length > 0 || fonctions.value.length > 0 || !!territoire.value
-)
-
-function resetFilters() {
-  search.value = ''
-  echelle.value = []
-  fonctions.value = []
-  territoire.value = null
-  router.replace({ query: undefined })
-}
-
-// Tagging compact mobile — toggle direct
-function toggleEchelle(opt: string) {
-  if (echelle.value.includes(opt)) {
-    onEchelle(echelle.value.filter(v => v !== opt))
-  } else {
-    onEchelle([...echelle.value, opt])
-  }
-}
-
-function toggleFonction(fn: string) {
-  if (fonctions.value.includes(fn)) {
-    onFonctions(fonctions.value.filter(f => f !== fn))
-  } else {
-    onFonctions([...fonctions.value, fn])
-  }
-}
-
-// Sync recherche depuis app.vue top nav (via URL ?q=)
-watch(() => route.query.q, (v) => {
-  search.value = (v as string) ?? ''
-})
-
-// ── Données ───────────────────────────────────────────────────────────────
-const { data, pending, error } = await useFetch<{ list: Org[]; source: string }>('/api/organisations')
-
-const orgs = computed<Org[]>(() => data.value?.list ?? [])
-const dataSource = computed(() => data.value?.source ?? 'nocodb')
-
-// Fiche aléatoire — réagit au ?random=1
-watch(() => route.query.random, (v) => {
-  if (v === '1' && orgs.value.length > 0) {
-    const randomOrg = orgs.value[Math.floor(Math.random() * orgs.value.length)]
-    router.replace({ path: `/fiche/${randomOrg.Id}` })
-  }
-})
-
-// ── Filtrage côté client ──────────────────────────────────────────────────
-const filtered = computed<Org[]>(() => {
-  let result = orgs.value
-
-  if (search.value.trim()) {
-    const q = search.value.toLowerCase()
-    result = result.filter(
-      (o) =>
-        o.nom?.toLowerCase().includes(q) ||
-        o.localisation_ville?.toLowerCase().includes(q)
-    )
-  }
-
-  if (echelle.value.length) {
-    result = result.filter((o) => o.echelle && echelle.value.includes(o.echelle))
-  }
-
-  if (fonctions.value.length) {
-    // Garde les orgs qui matchent au moins 1 fonction sélectionnée
-    result = result.filter((o) => {
-      const orgFns = (o.tags_fonction ?? '').split(',').map((f) => f.trim()).filter(Boolean)
-      return fonctions.value.some((fn) => orgFns.includes(fn))
-    })
-    // Tri par score pondéré : priorité 1 (1er cliqué) = poids le plus fort
-    const n = fonctions.value.length
-    const score = (o: Org) =>
-      fonctions.value.reduce((s, fn, i) => {
-        const fns = (o.tags_fonction ?? '').split(',').map((f) => f.trim()).filter(Boolean)
-        return s + (fns.includes(fn) ? (n - i) : 0)
-      }, 0)
-    result = [...result].sort((a, b) => score(b) - score(a))
-  }
-
-  if (territoire.value) {
-    result = result.filter((o) => o.territoire === territoire.value)
-  }
-
-  return result
-})
-
-const DOM_TOM = ['Guadeloupe', 'Martinique', 'Guyane', 'La Réunion', 'Mayotte']
-const DOM_TOM_LIST = DOM_TOM
-
-const metropoleOrgs = computed<Org[]>(() =>
-  filtered.value.filter(o => !o.territoire || !DOM_TOM.includes(o.territoire))
-)
-
-const outremerOrgs = computed<Org[]>(() => {
-  if (territoire.value && DOM_TOM.includes(territoire.value)) {
-    return filtered.value.filter(o => o.territoire === territoire.value)
-  }
-  return filtered.value.filter(o => o.territoire && DOM_TOM.includes(o.territoire))
-})
-
-const outremerCountByDom = computed<Record<string, number>>(() => {
-  const counts: Record<string, number> = {}
-  DOM_TOM.forEach(d => { counts[d] = 0 })
-  filtered.value.forEach(o => {
-    if (o.territoire && DOM_TOM.includes(o.territoire)) {
-      counts[o.territoire] = (counts[o.territoire] ?? 0) + 1
-    }
-  })
-  return counts
-})
-
-// ── Compteurs ─────────────────────────────────────────────────────────────
-const ECHELLES = ['National', 'Régional', 'Local'] as const
-const ECHELLE_LABELS: Record<string, string> = { National: 'Nat', Régional: 'Rég', Local: 'Loc' }
-const FONCTIONS = ['Juridique', 'Technique', 'Économique', 'Administratif', 'Chantier', 'Comptabilité', 'Développement', 'Formation', "Gestion d'agence", 'Santé mentale'] as const
-const TERRITOIRES = ['Métropole', 'Guadeloupe', 'Martinique', 'Guyane', 'La Réunion', 'Mayotte']
-
-const echelleCount = computed<Record<string, number>>(() => {
-  const counts: Record<string, number> = {}
-  ECHELLES.forEach((e) => { counts[e] = 0 })
-  orgs.value.forEach((o) => { if (o.echelle) counts[o.echelle] = (counts[o.echelle] ?? 0) + 1 })
-  return counts
-})
-
-const fonctionCount = computed<Record<string, number>>(() => {
-  const counts: Record<string, number> = {}
-  FONCTIONS.forEach((f) => { counts[f] = 0 })
-  orgs.value.forEach((o) => {
-    const fns = (o.tags_fonction ?? '').split(',').map((f) => f.trim()).filter(Boolean)
-    fns.forEach((fn) => { counts[fn] = (counts[fn] ?? 0) + 1 })
-  })
-  return counts
-})
-
-const territoireCount = computed<Record<string, number>>(() => {
-  const counts: Record<string, number> = {}
-  TERRITOIRES.forEach((t) => { counts[t] = 0 })
-  orgs.value.forEach((o) => { if (o.territoire) counts[o.territoire] = (counts[o.territoire] ?? 0) + 1 })
-  counts['Métropole'] = orgs.value.filter(o => !o.territoire || !DOM_TOM.includes(o.territoire)).length
-  return counts
-})
-
-// ── Helpers ───────────────────────────────────────────────────────────────
-function fonctionsList(org: Org): string[] {
-  return (org.tags_fonction ?? '').split(',').map((f) => f.trim()).filter(Boolean).slice(0, 3)
-}
-
-useHead({ title: 'AEP — Cartographie de l\'écologie politique architecturale' })
+useHead({ title: "AEP - Réseaux de bifurcation architecturale" })
 </script>
diff --git a/server/api/admin/rag-info.get.ts b/server/api/admin/rag-info.get.ts
new file mode 100644
index 0000000..d6ab77e
--- /dev/null
+++ b/server/api/admin/rag-info.get.ts
@@ -0,0 +1,39 @@
+/**
+ * GET /api/admin/rag-info
+ *
+ * Retourne le statut du système RAG (v1 + v2) pour la page /admin/rag-status
+ */
+
+import { existsSync, readFileSync } from 'fs'
+import { resolve } from 'path'
+
+export default defineEventHandler(async (_event) => {
+  // Statut V2 : compter les embeddings
+  let v2Count = 0
+  let v2Date: string | null = null
+  let v2Model: string | null = null
+
+  try {
+    // Chercher depuis process.cwd() (racine du projet Nuxt)
+    const embPath = resolve(process.cwd(), 'server', 'data', 'embeddings-v2.json')
+    if (existsSync(embPath)) {
+      const data = JSON.parse(readFileSync(embPath, 'utf-8'))
+      v2Count = data.embeddings?.length ?? 0
+      v2Date = data.meta?.date ?? null
+      v2Model = data.meta?.model ?? null
+    }
+  } catch (e: any) {
+    console.warn('[rag-info] Erreur lecture embeddings-v2.json :', e?.message ?? e)
+  }
+
+  return {
+    v2_embeddings_count: v2Count,
+    v2_ready: v2Count > 0,
+    v2_model: v2Model ?? 'mistral-embed',
+    v2_generated_date: v2Date ?? null,
+    v1_enabled: process.env.RAG_V1_ENABLED !== 'false',
+    v1_deprecation_date: process.env.RAG_V1_DEPRECATION_DATE ?? 'non défini',
+    model_chat: 'mistral-small-latest',
+    setup_command: 'MISTRAL_API_KEY=xxx node scripts/vectorize-v2.js'
+  }
+})
diff --git a/server/api/chatbot-v2.post.ts b/server/api/chatbot-v2.post.ts
new file mode 100644
index 0000000..af2e429
--- /dev/null
+++ b/server/api/chatbot-v2.post.ts
@@ -0,0 +1,194 @@
+/**
+ * POST /api/chatbot-v2
+ *
+ * Chatbot V2 - Embedding-based search sur structures bifurcation
+ * Coexiste avec /api/chatbot (keyword NocoDB) pendant la transition.
+ *
+ * SETUP AVANT DEPLOY :
+ * cd nav-carte && MISTRAL_API_KEY=xxx node scripts/vectorize-v2.js
+ * Coût estimé : ~0.10 EUR pour 120 fiches
+ *
+ * Flow :
+ *   1. Rate limit (réutilise checkRateLimitJson, 10 req/IP/jour)
+ *   2. Embed la query via Mistral Embed (mistral-embed)
+ *   3. Top-5 cosine similarity sur embeddings-v2.json
+ *   4. Si embeddings absents : réponse graceful (v2_ready: false)
+ *   5. Construit contexte RAG depuis les fiches candidates
+ *   6. Génère réponse Mistral Small (json_object)
+ *   7. Retourne { reponse_texte, fiches_recommandees, sources, v2_ready }
+ *
+ * Variables d'env :
+ *   MISTRAL_API_KEY       - Clé Mistral (partagée avec chatbot v1)
+ *   RAG_V1_ENABLED        - true/false (défaut: true) - coexistence pendant transition
+ *   RAG_V1_DEPRECATION_DATE - Date prévue deprecation v1 (ex: 2026-05-18)
+ */
+
+import { checkRateLimitJson } from '~/server/utils/rateLimitJson'
+import { loadEmbeddingsV2, topKSearch } from '~/server/utils/vectorSearch'
+
+// ── System prompt V2 ───────────────────────────────────────────────────────────
+
+const SYSTEM_PROMPT_V2 = `Tu es un assistant pour la carte des réseaux de bifurcation en architecture (projet AEP).
+Tu réponds aux questions sur les structures, les pratiques, les pensées écologiques.
+
+Règles :
+- Cite chaque structure par son nom exact et son fiche_id
+- Indique la famille (1-5) entre parenthèses après chaque nom
+- Reste sobre et descriptif - pas militant agressif
+- Tirets longs interdits : utilise des - ou des ;
+- Max 200 mots par réponse
+- Si hors-scope (pas archi/habiter/écologie), redirige poliment vers la carte
+- Retourne UNIQUEMENT un JSON valide, sans texte avant ou après
+
+Familles :
+1 - Réemploi et filières
+2 - Frugalité et low-tech
+3 - Architecture sociale et précarités
+4 - Collectifs, écolieux et AMO
+5 - Urbanisme de transition et territoires
+
+FORMAT DE SORTIE :
+{
+  "reponse_texte": "Ta réponse en prose (max 200 mots)",
+  "fiches_recommandees": [
+    { "fiche_id": "f1-rotor", "nom": "Rotor", "explication": "1-2 phrases pourquoi cette fiche" }
+  ]
+}
+
+CONTEXTE - Structures disponibles :
+{{CONTEXTE_RAG}}`
+
+// ── Handler ────────────────────────────────────────────────────────────────────
+
+export default defineEventHandler(async (event) => {
+  const config = useRuntimeConfig()
+
+  // 1. Rate limit
+  const ip =
+    getHeader(event, 'x-forwarded-for')?.split(',')[0].trim() ||
+    event.node.req.socket?.remoteAddress ||
+    '0.0.0.0'
+
+  const allowed = checkRateLimitJson(ip, 'chatbot-v2', 10)
+  if (!allowed) {
+    throw createError({
+      statusCode: 429,
+      statusMessage: 'Limite de 10 questions par jour atteinte.'
+    })
+  }
+
+  // 2. Validation body
+  const body = await readBody(event)
+  const question: string = (body?.question ?? '').trim()
+
+  if (!question || question.length < 3) {
+    throw createError({ statusCode: 400, statusMessage: 'Question trop courte.' })
+  }
+
+  const mistralApiKey = config.mistralApiKey as string
+  if (!mistralApiKey) {
+    throw createError({ statusCode: 500, statusMessage: 'Clé API Mistral manquante.' })
+  }
+
+  // 3. Charger embeddings V2 (lazy, cachés en mémoire)
+  const embeddingsV2 = loadEmbeddingsV2()
+
+  // Graceful fallback si le script vectorize-v2.js n'a pas encore été lancé
+  if (embeddingsV2.length === 0) {
+    return {
+      reponse_texte: "La base vectorielle V2 est en cours de préparation. Merci d'utiliser le chatbot classique en attendant.",
+      fiches_recommandees: [],
+      sources: [],
+      v2_ready: false
+    }
+  }
+
+  // 4. Embed la query via Mistral Embed
+  let queryEmbedding: number[]
+  try {
+    const embedRes = await $fetch<{ data: { embedding: number[] }[] }>(
+      'https://api.mistral.ai/v1/embeddings',
+      {
+        method: 'POST',
+        headers: {
+          Authorization: `Bearer ${mistralApiKey}`,
+          'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+          model: 'mistral-embed',
+          inputs: [question]
+        })
+      }
+    )
+    queryEmbedding = embedRes.data[0].embedding
+  } catch (e: any) {
+    console.error('[chatbot-v2] Erreur embedding Mistral :', e?.message ?? e)
+    throw createError({ statusCode: 502, statusMessage: 'Erreur embedding Mistral.' })
+  }
+
+  // 5. Top-5 cosine similarity
+  const v2Results = topKSearch(embeddingsV2, queryEmbedding, 5)
+
+  // 6. Contexte RAG
+  const candidatesContext = v2Results.map(r => ({
+    fiche_id: r.fiche_id,
+    nom: r.nom,
+    famille: r.famille,
+    hashtags: r.hashtags,
+    score: r.score,
+    preview: r.text_preview
+  }))
+
+  const contextStr = candidatesContext
+    .map(c => `[${c.fiche_id}] ${c.nom} (famille ${c.famille}, score: ${c.score.toFixed(2)})\n${c.preview}`)
+    .join('\n\n---\n\n')
+
+  const systemPrompt = SYSTEM_PROMPT_V2.replace('{{CONTEXTE_RAG}}', contextStr)
+
+  // 7. Mistral Small - génération réponse
+  let mistralRaw: string
+  try {
+    const mistralRes = await $fetch<{
+      choices: { message: { content: string } }[]
+    }>('https://api.mistral.ai/v1/chat/completions', {
+      method: 'POST',
+      headers: {
+        Authorization: `Bearer ${mistralApiKey}`,
+        'Content-Type': 'application/json'
+      },
+      body: JSON.stringify({
+        model: 'mistral-small-latest',
+        temperature: 0.3,
+        max_tokens: 600,
+        response_format: { type: 'json_object' },
+        messages: [
+          { role: 'system', content: systemPrompt },
+          { role: 'user', content: question }
+        ]
+      })
+    })
+    mistralRaw = mistralRes.choices?.[0]?.message?.content ?? '{}'
+  } catch (e: any) {
+    console.error('[chatbot-v2] Erreur Mistral Small :', e?.message ?? e)
+    throw createError({ statusCode: 502, statusMessage: 'Erreur appel Mistral Small.' })
+  }
+
+  // 8. Parse JSON
+  let parsed: { reponse_texte: string; fiches_recommandees: any[] }
+  try {
+    parsed = JSON.parse(mistralRaw)
+    if (!parsed.reponse_texte) throw new Error('reponse_texte absent')
+  } catch {
+    parsed = {
+      reponse_texte: "Impossible d'analyser la réponse.",
+      fiches_recommandees: []
+    }
+  }
+
+  return {
+    reponse_texte: parsed.reponse_texte,
+    fiches_recommandees: parsed.fiches_recommandees ?? [],
+    sources: candidatesContext,
+    v2_ready: true
+  }
+})
diff --git a/server/utils/vectorSearch.ts b/server/utils/vectorSearch.ts
new file mode 100644
index 0000000..b1e851f
--- /dev/null
+++ b/server/utils/vectorSearch.ts
@@ -0,0 +1,96 @@
+/**
+ * Recherche vectorielle sur les embeddings V2
+ * Cosine similarity + top-K
+ *
+ * Utilisé par : server/api/chatbot-v2.post.ts
+ * Données     : server/data/embeddings-v2.json (généré par scripts/vectorize-v2.js)
+ */
+
+import { readFileSync, existsSync } from 'fs'
+import { fileURLToPath } from 'url'
+import { resolve, dirname } from 'path'
+
+// ── Types ──────────────────────────────────────────────────────────────────────
+
+export interface EmbeddingEntry {
+  fiche_id: string
+  nom: string
+  famille: number
+  hashtags: string[]
+  embedding: number[]
+  text_preview: string
+}
+
+export interface SearchResult {
+  fiche_id: string
+  nom: string
+  famille: number
+  hashtags: string[]
+  score: number
+  text_preview: string
+}
+
+// ── Cosine similarity ──────────────────────────────────────────────────────────
+
+export function cosineSimilarity(a: number[], b: number[]): number {
+  if (a.length !== b.length) return 0
+  let dot = 0, normA = 0, normB = 0
+  for (let i = 0; i < a.length; i++) {
+    dot += a[i] * b[i]
+    normA += a[i] * a[i]
+    normB += b[i] * b[i]
+  }
+  const denom = Math.sqrt(normA) * Math.sqrt(normB)
+  return denom === 0 ? 0 : dot / denom
+}
+
+// ── Top-K search ───────────────────────────────────────────────────────────────
+
+export function topKSearch(
+  embeddings: EmbeddingEntry[],
+  queryEmbedding: number[],
+  k: number = 5
+): SearchResult[] {
+  return embeddings
+    .map(e => ({
+      fiche_id: e.fiche_id,
+      nom: e.nom,
+      famille: e.famille,
+      hashtags: e.hashtags,
+      score: cosineSimilarity(e.embedding, queryEmbedding),
+      text_preview: e.text_preview
+    }))
+    .sort((a, b) => b.score - a.score)
+    .slice(0, k)
+}
+
+// ── Chargement lazy des embeddings (cache module-level) ────────────────────────
+
+let _embeddingsV2: EmbeddingEntry[] | null = null
+
+export function loadEmbeddingsV2(): EmbeddingEntry[] {
+  if (_embeddingsV2 !== null) return _embeddingsV2
+
+  try {
+    // Résolution du chemin depuis server/utils/ vers server/data/
+    const currentDir = dirname(fileURLToPath(import.meta.url))
+    const embPath = resolve(currentDir, '..', 'data', 'embeddings-v2.json')
+
+    if (!existsSync(embPath)) {
+      console.warn('[vectorSearch] embeddings-v2.json absent - V2 vector search désactivé')
+      console.warn('[vectorSearch] Lancer : MISTRAL_API_KEY=xxx node scripts/vectorize-v2.js')
+      _embeddingsV2 = []
+      return []
+    }
+
+    const raw = readFileSync(embPath, 'utf-8')
+    const data = JSON.parse(raw)
+    _embeddingsV2 = data.embeddings ?? []
+    console.log(`[vectorSearch] ${_embeddingsV2!.length} embeddings V2 chargés (${data.meta?.model ?? 'unknown'})`)
+    return _embeddingsV2!
+  } catch (e: any) {
+    console.warn('[vectorSearch] Erreur chargement embeddings-v2.json :', e?.message ?? e)
+    _embeddingsV2 = []
+    return []
+  }
+}
diff --git a/types/structure-v2.ts b/types/structure-v2.ts
new file mode 100644
index 0000000..b7eca5a
--- /dev/null
+++ b/types/structure-v2.ts
@@ -0,0 +1,91 @@
+/**
+ * Types V2 - Carte des réseaux de bifurcation
+ * Source : public/data/reseaux-bifurcation.json
+ */
+
+export interface StructureV2 {
+  id: string
+  nom: string
+  url: string
+  pays: string
+  ville: string
+  famille_principale: 1 | 2 | 3 | 4 | 5
+  familles_secondaires?: number[]
+  hashtags: string[]
+  type_principal: string
+  badges: {
+    centre_ressources: boolean
+    mouvement_manifeste: boolean
+    contre_pouvoir_spatial: boolean
+    f6_recherche_politique: boolean
+  }
+  description_courte: string
+  description_longue: string
+  pensees: { id: string; label: string; confiance: string }[]
+  sources: { type: string; titre: string; url: string }[]
+  already_in_v1: boolean
+  eligible_v2: boolean
+  // Geocoords (ajoutés par géocodage - peut être null)
+  latitude?: number | null
+  longitude?: number | null
+}
+
+export interface ReseauxBifurcationData {
+  version: string
+  meta: {
+    total_structures: number
+    total_projets_emblematiques: number
+    total_edges_graphe: number
+    familles: { id: number; label: string; color: string }[]
+    hashtags_officiels: string[]
+  }
+  structures: StructureV2[]
+  projets: ProjetEmblematique[]
+  graphe: { edges: GrapheEdge[] }
+}
+
+export interface ProjetEmblematique {
+  id: string
+  nom: string
+  structure_parent: string
+  annee?: number
+  lieu?: string
+  geocoords?: { lat: number; lng: number } | null
+  description: string
+  url?: string | null
+  tags: string[]
+}
+
+export interface GrapheEdge {
+  source: string
+  target: string
+  types: string[]
+  score: number
+  evidence: string
+}
+
+// Mapping StructureV2 vers le format attendu par NavMap (interface Org)
+// NavMap attend { Id, latitude, longitude, nom, ... }
+export function structureToMapOrg(s: StructureV2, index: number): {
+  Id: number
+  nom: string
+  latitude?: number | null
+  longitude?: number | null
+  prioritaire?: boolean
+  famille_principale?: number
+  hashtags?: string[]
+  type_principal?: string
+  description_courte?: string
+} {
+  return {
+    Id: index,
+    nom: s.nom,
+    latitude: s.latitude,
+    longitude: s.longitude,
+    prioritaire: s.badges?.centre_ressources || s.badges?.mouvement_manifeste || s.badges?.contre_pouvoir_spatial,
+    famille_principale: s.famille_principale,
+    hashtags: s.hashtags,
+    type_principal: s.type_principal,
+    description_courte: s.description_courte,
+  }
+}