feat(glossaire): extend taxonomy and align Astro 6 content config

src/styles/global.css

@@ -539,4 +539,91 @@ html{ scroll-behavior: smooth; }
             min-height: 100dvh;
           }
         }
-      }
+      }
+
+/* ==========================
+   Glossaire
+   ========================== */
+
+   .glossary-intro{
+    margin-bottom: 14px;
+  }
+  
+  .glossary-section{
+    margin: 24px 0;
+  }
+  
+  .glossary-section-nav{
+    display: flex;
+    flex-wrap: wrap;
+    gap: 10px;
+    margin: 18px 0 12px;
+  }
+  
+  .glossary-section-nav a,
+  .glossary-alpha-nav a{
+    border: 1px solid rgba(127,127,127,0.35);
+    border-radius: 999px;
+    padding: 4px 10px;
+    transition: background 120ms ease, transform 120ms ease;
+  }
+  
+  .glossary-section-nav a:hover,
+  .glossary-alpha-nav a:hover{
+    background: rgba(127,127,127,0.10);
+    transform: translateY(-1px);
+    text-decoration: none;
+  }
+  
+  .glossary-grid{
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
+    gap: 14px;
+    margin-top: 14px;
+  }
+  
+  .glossary-card{
+    border: 1px solid rgba(127,127,127,0.22);
+    border-radius: 16px;
+    padding: 14px;
+    background: rgba(127,127,127,0.05);
+  }
+  
+  .glossary-card h3{
+    margin-top: 0;
+    margin-bottom: 8px;
+    line-height: 1.25;
+  }
+  
+  .glossary-card__def{
+    margin-bottom: 10px;
+  }
+  
+  .glossary-meta{
+    display: flex;
+    flex-wrap: wrap;
+    gap: 8px;
+    font-size: 12px;
+    opacity: .85;
+  }
+  
+  .glossary-meta span{
+    border: 1px solid rgba(127,127,127,0.28);
+    border-radius: 999px;
+    padding: 2px 8px;
+  }
+  
+  .glossary-alpha-nav{
+    display: flex;
+    flex-wrap: wrap;
+    gap: 8px;
+    margin: 12px 0 18px;
+  }
+  
+  .glossary-alpha-group{
+    margin: 20px 0;
+  }
+  
+  .glossary-alpha-group h3{
+    margin-bottom: 8px;
+  }