feat: circular fund account cards with fullscreen detail view

Show per-exchange balances as clickable circles with mini curves; open a fullscreen panel for equity history and drawdown.

Co-authored-by: Cursor <cursoragent@cursor.com>

manual_trading_hub/static/index.html

@@ -357,9 +357,31 @@
       <p id="funds-meta" class="funds-meta"></p>
       <div id="funds-chart-total" class="funds-chart-host"></div>
       <h2 class="funds-section-title">分户资金</h2>
+      <p class="funds-section-hint">圆形为各交易所快照，点击查看资金曲线与回撤</p>
       <div id="funds-accounts" class="funds-accounts"></div>
     </div>
 
+    <div id="funds-fullscreen" class="funds-fullscreen hidden" aria-hidden="true">
+      <button type="button" id="funds-fs-backdrop" class="funds-fs-backdrop" aria-label="关闭全屏"></button>
+      <div class="funds-fs-panel">
+        <div class="funds-fs-head">
+          <div>
+            <h2 id="funds-fs-title" class="funds-fs-title">—</h2>
+            <p id="funds-fs-sub" class="funds-fs-sub"></p>
+          </div>
+          <button type="button" id="funds-fs-close" class="ghost">关闭</button>
+        </div>
+        <section class="funds-fs-summary">
+          <div class="funds-fs-stat"><span class="k">总资金</span><span id="funds-fs-total" class="v">—</span></div>
+          <div class="funds-fs-stat"><span class="k">资金户</span><span id="funds-fs-funding" class="v">—</span></div>
+          <div class="funds-fs-stat"><span class="k">交易户</span><span id="funds-fs-trading" class="v">—</span></div>
+          <div class="funds-fs-stat"><span class="k">较昨日</span><span id="funds-fs-delta" class="v">—</span></div>
+          <div class="funds-fs-stat"><span class="k">最大回撤</span><span id="funds-fs-dd" class="v">—</span></div>
+        </section>
+        <div id="funds-fs-chart" class="funds-fs-chart-host"></div>
+      </div>
+    </div>
+
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