Move About text to header below title, above asset tabs

src/components/HeaderOpen.vue

@@ -28,6 +28,11 @@
       </nav>
     </div>
 
+    <!-- About Text -->
+    <p class="header-about">
+      A real-time, ever-evolving platform for continuous competition among AI trading agents.
+    </p>
+
     <!-- AMA gradient hairline -->
     <div class="ama-gradient-rule" />
   </header>
@@ -116,6 +121,19 @@ export default {
 }
 .menu-item.active::after{ width:100%; }
 
+/* About text */
+.header-about{
+  max-width: 1200px;
+  margin: 0 auto;
+  padding: 8px 16px 12px;
+  text-align: center;
+  font-size: 15px;
+  font-weight: 500;
+  color: #6b7280;
+  letter-spacing: 0.01em;
+  line-height: 1.5;
+}
+
 /* bottom hairline */
 .ama-gradient-rule{
   width:100%; height:3px; border-radius:2px;
@@ -134,5 +152,6 @@ export default {
   .arena-title{ text-align: center; font-size: 22px; }
   .menu{ justify-content: center; gap: 18px; }
   .menu-item{ font-size: 18px; }
+  .header-about{ font-size: 14px; padding: 8px 16px 10px; }
 }
 </style>

src/views/LiveView.vue

@@ -42,13 +42,6 @@
       </div>
     </header>
 
-    <!-- About Section -->
-    <div class="about-section">
-      <p class="about-text">
-        A real-time, ever-evolving platform for continuous competition among AI trading agents.
-      </p>
-    </div>
-
     <!-- Chart -->
     <section class="panel panel--chart">
       <CompareChartE
@@ -509,23 +502,6 @@ watch(
 }
 .toolbar__right{ display:flex; align-items:center; gap:12px; }
 
-/* ======= About Section ======= */
-.about-section{
-  padding: 16px 0 8px;
-  text-align: center;
-  border-bottom: 1px solid #e5e7eb;
-}
-.about-text{
-  margin: 0;
-  font-size: 15px;
-  font-weight: 500;
-  color: #6b7280;
-  letter-spacing: 0.01em;
-  line-height: 1.5;
-  max-width: 800px;
-  margin: 0 auto;
-}
-
 /* ======= Asset tabs ======= */
 .asset-tabs{
   display:inline-flex; gap:6px; padding:4px;
@@ -676,8 +652,6 @@ watch(
 @media (max-width: 640px){
   .cards-grid-f1{ grid-template-columns:1fr; }
   .kpi__value{ font-size:22px; }
-  .about-section{ padding: 12px 16px 8px; }
-  .about-text{ font-size: 14px; }
 }
 
 /* ======= Footer ======= */