feat(ui): unify content shell layout

app/(order)/order/[id]/page.tsx

@@ -167,7 +167,7 @@ export default function OrderDetailPage({ params }: { params: Promise<{ id: stri
   })()
 
   return (
-    <div className="container mx-auto py-8 px-4 max-w-3xl">
+    <div className="container mx-auto py-8 px-4 max-w-2xl">
       <Link
         href="/orders"
         className="inline-flex items-center gap-1 text-sm text-muted-foreground hover:text-foreground mb-4"

app/(order)/order/new/page.tsx

@@ -95,7 +95,7 @@ export default function NewOrderPage() {
 
   if (loading) {
     return (
-      <div className="container mx-auto max-w-lg px-4 py-8">
+      <div className="container mx-auto max-w-2xl px-4 py-8">
         <EmptyState title="加载中" description="正在读取服务信息..." icon={CreditCard} />
       </div>
     )
@@ -103,7 +103,7 @@ export default function NewOrderPage() {
 
   if (!service || !player) {
     return (
-      <div className="container mx-auto max-w-lg px-4 py-8">
+      <div className="container mx-auto max-w-2xl px-4 py-8">
         <EmptyState title="服务不存在" description="该服务可能已下架或暂不可访问。" />
       </div>
     )
@@ -113,7 +113,7 @@ export default function NewOrderPage() {
 
   if (submitted) {
     return (
-      <div className="container mx-auto max-w-lg px-4 py-8">
+      <div className="container mx-auto max-w-2xl px-4 py-8">
         <EmptyState
           title="下单成功"
           description="订单已创建，等待打手接单。你可以在订单列表中查看进度。"