Refonte accueil : hero typo statique, axes icônes, menu italic, page numérique

- Hero : 5 lignes typographiques alternées (bold/light/accent/caps/italic),
  citations et axes dans un bloc discret dépliable
- Icônes axes : Ğ1 custom, balance (éco don), graphe (WoT), marteau (décision),
  pictos plus lumineux (glow)
- Menu : Autonomie en italique + grand, Événement majuscule
- Page /autonomie renommée /numerique avec redirect 301
- Sceau hexagramme 益 Yì dans le layout, BookSection dans /modele-eco
- Fonts Syne + Space Grotesk, dark theme éclairci
- Popup GrateWizard agrandie (480×860)
- Actions AxisBlock : primary côte à côte, secondary séparé dessous

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/components/layout/TheHeader.vue

@@ -16,8 +16,10 @@
 
       <!-- Desktop navigation -->
       <nav class="hidden md:flex items-center gap-1" aria-label="Navigation principale">
+        <!-- Autonomie : prefix + axis buttons -->
+        <span class="nav-prefix">Autonomie&thinsp;:</span>
         <NuxtLink
-          v-for="item in site?.navigation"
+          v-for="item in axes"
           :key="item.to"
           :to="item.to"
           class="btn-ghost text-sm"
@@ -25,6 +27,19 @@
         >
           {{ item.label }}
         </NuxtLink>
+
+        <!-- Separator + extra nav -->
+        <span class="nav-sep" />
+        <NuxtLink
+          v-for="item in extra"
+          :key="item.to"
+          :to="item.to"
+          class="btn-ghost btn-ghost--muted text-sm"
+          active-class="!text-[hsl(var(--color-text))] bg-[hsl(var(--color-text)/0.06)]"
+        >
+          {{ item.label }}
+        </NuxtLink>
+
         <UiPaletteSelector />
       </nav>
 
@@ -39,13 +54,17 @@
     </div>
 
     <!-- Mobile menu -->
-    <LayoutNavMobile v-model:open="isMobileMenuOpen" :nav="site?.navigation ?? []" />
+    <LayoutNavMobile v-model:open="isMobileMenuOpen" :nav="allNav" />
   </header>
 </template>
 
 <script setup lang="ts">
 const { data: site } = await useSiteContent()
 const isMobileMenuOpen = ref(false)
+
+const axes = computed(() => (site.value as any)?.navigation?.axes ?? [])
+const extra = computed(() => (site.value as any)?.navigation?.extra ?? [])
+const allNav = computed(() => [...axes.value, ...extra.value])
 </script>
 
 <style scoped>
@@ -65,9 +84,34 @@ const isMobileMenuOpen = ref(false)
 
 .logo-text {
   font-family: var(--font-display);
-  font-weight: 600;
-  font-size: 1.15rem;
-  letter-spacing: 0.02em;
-  color: hsl(var(--color-primary));
+  font-weight: 400;
+  font-size: 1.25rem;
+  letter-spacing: 0.04em;
+  background-image: linear-gradient(to right, hsl(var(--color-primary)), hsl(var(--color-accent)));
+  -webkit-background-clip: text;
+  background-clip: text;
+  -webkit-text-fill-color: transparent;
+}
+
+.nav-prefix {
+  font-family: var(--font-display);
+  font-size: 0.92rem;
+  font-weight: 500;
+  font-style: italic;
+  letter-spacing: 0.03em;
+  color: hsl(var(--color-text) / 0.4);
+  margin-right: 0.125rem;
+}
+
+.nav-sep {
+  display: block;
+  width: 1px;
+  height: 1.25rem;
+  background: hsl(var(--color-text) / 0.12);
+  margin: 0 0.375rem;
+}
+
+.btn-ghost--muted {
+  color: hsl(var(--color-text) / 0.45);
 }
 </style>