修复：双色球面板显示位置（左上角 → 屏幕居中）

将 x-show 与 display:flex 拆分到两层 div，
与 baccarat-panel 结构保持一致：
  外层 div: x-data / x-show / x-cloak
  次层 div: position:fixed + display:flex 居中（含 Alpine transition）
  内层 div: 面板卡片内容（width:480px）

原写法 x-show 会将 display:flex 覆盖为 display:block，导致 flex 居中失效

resources/views/chat/partials/lottery-panel.blade.php

@@ -13,13 +13,14 @@
 --}}
 
 {{-- ─── 彩票面板遮罩 ─── --}}
-<div id="lottery-panel" x-data="lotteryPanel()" x-show="show" x-cloak
-    style="position:fixed; inset:0; background:rgba(0,0,0,.55); z-index:9935;
-           display:flex; align-items:center; justify-content:center;">
-
+<div id="lottery-panel" x-data="lotteryPanel()" x-show="show" x-cloak>
     <div x-transition:enter="transition ease-out duration-250" x-transition:enter-start="opacity-0 scale-95"
         x-transition:enter-end="opacity-100 scale-100" x-transition:leave="transition ease-in duration-180"
         x-transition:leave-start="opacity-100 scale-100" x-transition:leave-end="opacity-0 scale-95"
+        style="position:fixed; inset:0; background:rgba(0,0,0,.55); z-index:9935;
+               display:flex; align-items:center; justify-content:center;">
+
+        <div
             style="width:480px; max-width:96vw; max-height:92vh; border-radius:10px; overflow:hidden;
                box-shadow:0 8px 32px rgba(0,0,0,.35); font-family:'Microsoft YaHei',SimSun,sans-serif;
                background:#fff; display:flex; flex-direction:column;">
@@ -40,11 +41,13 @@
                     <div style="color:#fef08a; font-size:18px; font-weight:900; line-height:1;"
                         x-text="'💰 ' + poolAmount.toLocaleString()"></div>
                     {{-- 超级期标记 --}}
-                <div x-show="isSuperIssue" style="color:#fcd34d; font-size:10px; font-weight:bold; margin-top:2px;">🎊
+                    <div x-show="isSuperIssue" style="color:#fcd34d; font-size:10px; font-weight:bold; margin-top:2px;">
+                        🎊
                         超级期</div>
                     {{-- 距开奖倒计时 --}}
                     <div x-show="!isSuperIssue && isOpen"
-                    style="color:rgba(255,255,255,.8); font-size:10px; margin-top:2px;" x-text="'距开奖 ' + countdownText">
+                        style="color:rgba(255,255,255,.8); font-size:10px; margin-top:2px;"
+                        x-text="'距开奖 ' + countdownText">
                     </div>
                 </div>
                 <span onclick="closeLotteryPanel()"
@@ -72,7 +75,8 @@
                         </div>
                         <div x-show="ruleOpen" x-collapse
                             style="padding:0 14px 10px; font-size:11px; color:#6b7280; line-height:1.8;">
-                        <div>🔴 <b>红球</b> 1~12 选3 · 🎲 <b>蓝球</b> 1~6 选1，每注 <b style="color:#dc2626;">100 金币</b></div>
+                            <div>🔴 <b>红球</b> 1~12 选3 · 🎲 <b>蓝球</b> 1~6 选1，每注 <b style="color:#dc2626;">100 金币</b>
+                            </div>
                             <div>每期单人最多购 <b>50 注</b>，可随时追加（停售前均可）</div>
                             <table style="width:100%; margin-top:6px; border-collapse:collapse;">
                                 <tr style="background:#fee2e2;">