Center control header title and BitCamel subtitle.

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

control/frontend/src/App.tsx

@@ -25,6 +25,7 @@ function Shell({ children }: { children: ReactNode }) {
   return (
     <div className="shell">
       <header className="header">
+        <div className="header-left">
           <div className="brand">比特骆驼中控</div>
           <nav className="nav">
             <NavLink to="/monitor" className={({ isActive }) => (isActive ? "active" : "")}>
@@ -37,6 +38,11 @@ function Shell({ children }: { children: ReactNode }) {
               系统设置
             </NavLink>
           </nav>
+        </div>
+        <div className="header-center">
+          <div className="header-title">自动化对冲监控系统</div>
+          <div className="header-subtitle">比特骆驼开发定制</div>
+        </div>
         {!lanClient ? (
           <div className="header-right">
             <span className="meta">{user}</span>

control/frontend/src/styles.css

@@ -47,14 +47,25 @@ body {
 }
 
 .header {
+  position: relative;
   display: flex;
   align-items: center;
+  justify-content: space-between;
   gap: 20px;
   margin-bottom: 20px;
   flex-wrap: wrap;
   padding-bottom: 12px;
   border-bottom: 1px solid var(--line);
   box-shadow: 0 1px 0 rgba(0, 200, 255, 0.08);
+  min-height: 52px;
+}
+
+.header-left {
+  display: flex;
+  align-items: center;
+  gap: 20px;
+  z-index: 1;
+  min-width: 0;
 }
 
 .brand {
@@ -64,6 +75,36 @@ body {
   color: var(--accent);
   text-shadow: var(--glow);
   text-transform: none;
+  white-space: nowrap;
+}
+
+.header-center {
+  position: absolute;
+  left: 50%;
+  top: 50%;
+  transform: translate(-50%, -50%);
+  text-align: center;
+  pointer-events: none;
+  z-index: 0;
+  max-width: min(42vw, 360px);
+}
+
+.header-title {
+  font-weight: 700;
+  letter-spacing: 0.12em;
+  font-size: 1.2rem;
+  line-height: 1.25;
+  color: var(--accent);
+  text-shadow: var(--glow);
+  white-space: nowrap;
+}
+
+.header-subtitle {
+  margin-top: 2px;
+  font-size: 0.72rem;
+  letter-spacing: 0.18em;
+  color: var(--muted);
+  white-space: nowrap;
 }
 
 .nav {
@@ -89,10 +130,24 @@ body {
 }
 
 .header-right {
-  margin-left: auto;
   display: flex;
   align-items: center;
   gap: 10px;
+  z-index: 1;
+  margin-left: auto;
+  flex-shrink: 0;
+}
+
+@media (max-width: 900px) {
+  .header-center {
+    position: static;
+    transform: none;
+    order: 3;
+    width: 100%;
+    max-width: none;
+    margin-top: 4px;
+    pointer-events: auto;
+  }
 }
 
 .main h2 {