ui: 顶栏透明、设置两列、下单与持仓监控优化

导航栏与页面背景一致；系统设置双列布局；下单三行表单与开仓状态反馈；持仓卡片增加平仓与止盈止损挂单展示。

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

templates/settings.html

@@ -1,15 +1,26 @@
 {% extends "base.html" %}
 {% block title %}系统设置 - 国内期货监控系统{% endblock %}
+{% block extra_css %}
+<style>
+.settings-page{max-width:1100px;margin:0 auto}
+.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;align-items:start}
+.settings-grid .card{margin-bottom:0;height:100%}
+.settings-grid .settings-span-2{grid-column:1/-1}
+@media(max-width:900px){.settings-grid{grid-template-columns:1fr}}
+</style>
+{% endblock %}
 {% block content %}
+<div class="settings-page">
+<div class="settings-grid">
 
 <div class="card">
     <h2>导航显示</h2>
     <form action="{{ url_for('settings') }}" method="post">
         <input type="hidden" name="action" value="nav">
         <p class="hint" style="margin-bottom:.75rem">关闭后顶栏隐藏对应入口，直接访问 URL 也会跳转回持仓监控。</p>
-        <div class="form-grid" style="max-width:640px;grid-template-columns:1fr 1fr">
+        <div class="check-row">
             {% for key, label in nav_toggles.items() %}
-            <label class="field" style="display:flex;align-items:center;gap:.5rem;cursor:pointer">
+            <label style="display:flex;align-items:center;gap:.5rem;cursor:pointer;white-space:nowrap">
                 <input type="checkbox" name="nav_{{ key }}" {% if nav_items[key] %}checked{% endif %}>
                 <span>{{ label }}</span>
             </label>
@@ -23,7 +34,7 @@
     <h2>交易模式</h2>
     <form action="{{ url_for('settings') }}" method="post">
         <input type="hidden" name="action" value="trading">
-        <div class="form-grid" style="max-width:640px">
+        <div class="form-grid">
             <div class="field">
                 <label>交易通道</label>
                 <select name="trading_mode">
@@ -84,9 +95,9 @@
     <p class="hint" style="margin-top:.75rem">在企业微信群中添加机器人后，将 Webhook 地址粘贴到上方保存即可。</p>
 </div>
 
-<div class="card">
+<div class="card settings-span-2">
     <h2>修改密码</h2>
-    <form action="{{ url_for('settings') }}" method="post" style="max-width:400px">
+    <form action="{{ url_for('settings') }}" method="post" style="max-width:480px">
         <input type="hidden" name="action" value="password">
         <div style="margin-bottom:.75rem">
             <label class="text-label" style="font-size:.85rem;display:block;margin-bottom:.35rem">当前账号</label>
@@ -107,4 +118,7 @@
         <button type="submit" class="btn-primary">修改密码</button>
     </form>
 </div>
+
+</div>
+</div>
 {% endblock %}