diff --git a/frontend/app/app.vue b/frontend/app/app.vue
index cbe60b0..a8876c6 100644
--- a/frontend/app/app.vue
+++ b/frontend/app/app.vue
@@ -245,23 +245,23 @@ function isActive(to: string) {
             <NuxtPage />
           </ErrorBoundary>
 
-          <!-- 井 Tsing — sceau (proportions calées sur avatars Yvv) -->
-          <svg class="app-seal" viewBox="0 0 130 100" fill="currentColor" aria-hidden="true">
+          <!-- 井 Tsing — sceau (traits épais, coins nets, ~carré) -->
+          <svg class="app-seal" viewBox="0 0 112 105" fill="currentColor" aria-hidden="true">
             <!-- Line 6 (top) — yin -->
-            <rect x="5" y="5" width="49" height="5" rx="1"/>
-            <rect x="76" y="5" width="49" height="5" rx="1"/>
+            <rect x="6" y="6" width="42" height="8"/>
+            <rect x="64" y="6" width="42" height="8"/>
             <!-- Line 5 — yang -->
-            <rect x="5" y="22" width="120" height="5" rx="1"/>
+            <rect x="6" y="23" width="100" height="8"/>
             <!-- Line 4 — yin -->
-            <rect x="5" y="39" width="49" height="5" rx="1"/>
-            <rect x="76" y="39" width="49" height="5" rx="1"/>
+            <rect x="6" y="40" width="42" height="8"/>
+            <rect x="64" y="40" width="42" height="8"/>
             <!-- Line 3 — yang -->
-            <rect x="5" y="56" width="120" height="5" rx="1"/>
+            <rect x="6" y="57" width="100" height="8"/>
             <!-- Line 2 — yang -->
-            <rect x="5" y="73" width="120" height="5" rx="1"/>
+            <rect x="6" y="74" width="100" height="8"/>
             <!-- Line 1 (bottom) — yin -->
-            <rect x="5" y="90" width="49" height="5" rx="1"/>
-            <rect x="76" y="90" width="49" height="5" rx="1"/>
+            <rect x="6" y="91" width="42" height="8"/>
+            <rect x="64" y="91" width="42" height="8"/>
           </svg>
         </main>
       </div>
diff --git a/frontend/public/hexagram-tsing-flat.svg b/frontend/public/hexagram-tsing-flat.svg
index 6ae67eb..7385fb8 100644
--- a/frontend/public/hexagram-tsing-flat.svg
+++ b/frontend/public/hexagram-tsing-flat.svg
@@ -1,12 +1,12 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 130 100" fill="currentColor">
-  <!-- Hexagram 48 — 井 Tsing — Le Puits (flat) -->
-  <rect x="5" y="5" width="49" height="5" rx="1"/>
-  <rect x="76" y="5" width="49" height="5" rx="1"/>
-  <rect x="5" y="22" width="120" height="5" rx="1"/>
-  <rect x="5" y="39" width="49" height="5" rx="1"/>
-  <rect x="76" y="39" width="49" height="5" rx="1"/>
-  <rect x="5" y="56" width="120" height="5" rx="1"/>
-  <rect x="5" y="73" width="120" height="5" rx="1"/>
-  <rect x="5" y="90" width="49" height="5" rx="1"/>
-  <rect x="76" y="90" width="49" height="5" rx="1"/>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 112 105" fill="currentColor">
+  <!-- Hexagram 48 — 井 Tsing — Le Puits (flat, traits épais, coins nets) -->
+  <rect x="6" y="6" width="42" height="8"/>
+  <rect x="64" y="6" width="42" height="8"/>
+  <rect x="6" y="23" width="100" height="8"/>
+  <rect x="6" y="40" width="42" height="8"/>
+  <rect x="64" y="40" width="42" height="8"/>
+  <rect x="6" y="57" width="100" height="8"/>
+  <rect x="6" y="74" width="100" height="8"/>
+  <rect x="6" y="91" width="42" height="8"/>
+  <rect x="64" y="91" width="42" height="8"/>
 </svg>
diff --git a/frontend/public/hexagram-tsing.svg b/frontend/public/hexagram-tsing.svg
index 93583eb..ce610ab 100644
--- a/frontend/public/hexagram-tsing.svg
+++ b/frontend/public/hexagram-tsing.svg
@@ -1,7 +1,7 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 130 100" fill="currentColor">
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 112 105" fill="currentColor">
   <!-- Hexagram 48 — 井 Tsing — Le Puits -->
   <!-- K'an (Eau) / Souen (Bois) — signature Yvv -->
-  <!-- Proportions calées sur les avatars hexagrammes (ratio ~1.3:1) -->
+  <!-- Traits épais, coins nets, aspect ~carré (réf. images PERVIER/Hexagrammes) -->
 
   <defs>
     <filter id="emboss" x="-10%" y="-10%" width="120%" height="120%">
@@ -28,19 +28,19 @@
 
   <g filter="url(#emboss)">
     <!-- Line 6 (top) — yin -->
-    <rect x="5" y="5" width="49" height="5" rx="1"/>
-    <rect x="76" y="5" width="49" height="5" rx="1"/>
+    <rect x="6" y="6" width="42" height="8"/>
+    <rect x="64" y="6" width="42" height="8"/>
     <!-- Line 5 — yang -->
-    <rect x="5" y="22" width="120" height="5" rx="1"/>
+    <rect x="6" y="23" width="100" height="8"/>
     <!-- Line 4 — yin -->
-    <rect x="5" y="39" width="49" height="5" rx="1"/>
-    <rect x="76" y="39" width="49" height="5" rx="1"/>
+    <rect x="6" y="40" width="42" height="8"/>
+    <rect x="64" y="40" width="42" height="8"/>
     <!-- Line 3 — yang -->
-    <rect x="5" y="56" width="120" height="5" rx="1"/>
+    <rect x="6" y="57" width="100" height="8"/>
     <!-- Line 2 — yang -->
-    <rect x="5" y="73" width="120" height="5" rx="1"/>
+    <rect x="6" y="74" width="100" height="8"/>
     <!-- Line 1 (bottom) — yin -->
-    <rect x="5" y="90" width="49" height="5" rx="1"/>
-    <rect x="76" y="90" width="49" height="5" rx="1"/>
+    <rect x="6" y="91" width="42" height="8"/>
+    <rect x="64" y="91" width="42" height="8"/>
   </g>
 </svg>