Align header title and ETH/BTC quotes with crypto_okx.

Match fullwidth title separator, page spacing, and move live tickers into the nav right column using the same spot-ticker UI/API.

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

lib/instance/templates/instance_brand_header.html

@@ -1,24 +1,4 @@
-{# 顶栏品牌标题 + 右上角 ETH/BTC 报价(与期权仓同款) #}
-<div class="header header--brand">
-    <h1 class="brand-title">
-        <span class="brand-prefix">加密货币</span>
-        <span class="brand-sep" aria-hidden="true">|</span>
-        <span class="brand-product">OKX 对冲</span>
-    </h1>
-    <div class="header-live-quotes" id="header-live-quotes" aria-label="ETH/BTC 行情">
-        <div class="hlq-row" data-base="ETH">
-            <span class="hlq-icon hlq-icon--eth" aria-hidden="true"></span>
-            <span class="hlq-sym">ETHUSDT</span>
-            <span class="hlq-last" data-hlq="last">—</span>
-            <span class="hlq-chg" data-hlq="chg">—</span>
-            <span class="hlq-pct" data-hlq="pct">—</span>
-        </div>
-        <div class="hlq-row" data-base="BTC">
-            <span class="hlq-icon hlq-icon--btc" aria-hidden="true"></span>
-            <span class="hlq-sym">BTCUSDT</span>
-            <span class="hlq-last" data-hlq="last">—</span>
-            <span class="hlq-chg" data-hlq="chg">—</span>
-            <span class="hlq-pct" data-hlq="pct">—</span>
-        </div>
-    </div>
+{# 顶栏品牌标题 — 与 crypto_okx 同款字体/间距(全角分隔符) #}
+<div class="header">
+    <h1>加密货币｜OKX 对冲</h1>
 </div>