refactor(components): 重构优惠券组件样式和结构

- 更新 CouponCard 组件样式，优化主题颜色和布局
- 调整 CouponList 组件样式，使用原生样式替代自定义样式
- 修改 orderConfirm 页面中的地址栏样式
- 更新 QuantitySelector 组件样式，统一数量选择器样式
- 删除 Questions 组件代码

src/components/CouponList.tsx

@@ -1,7 +1,6 @@
 import React from 'react'
 import { View, ScrollView } from '@tarojs/components'
 import CouponCard, { CouponCardProps } from './CouponCard'
-import './CouponCard.scss'
 
 export interface CouponListProps {
   /** 优惠券列表数据 */
@@ -33,14 +32,14 @@ const CouponList: React.FC<CouponListProps> = ({
   // 垂直布局
   if (layout === 'vertical') {
     return (
-      <View className="coupon-list">
+      <View className="p-4">
         {title && (
-          <View className="coupon-list__title">{title}</View>
+          <View className="text-lg font-semibold text-gray-800 mb-4">{title}</View>
         )}
-        
+
         {coupons.length === 0 ? (
           showEmpty && (
-            <View className="coupon-list__empty">
+            <View className="text-center py-10 px-5 text-gray-500 text-sm">
               {emptyText}
             </View>
           )
@@ -62,26 +61,30 @@ const CouponList: React.FC<CouponListProps> = ({
   return (
     <View>
       {title && (
-        <View className="coupon-list__title" style={{ paddingLeft: '16px' }}>
+        <View className="text-lg font-semibold text-gray-800 mb-4 pl-4">
           {title}
         </View>
       )}
-      
+
       {coupons.length === 0 ? (
         showEmpty && (
-          <View className="coupon-list__empty">
+          <View className="text-center py-10 px-5 text-gray-500 text-sm">
             {emptyText}
           </View>
         )
       ) : (
         <ScrollView
           scrollX
-          className="coupon-scroll"
+          className="flex p-4 gap-2 overflow-x-auto"
           showScrollbar={false}
+          style={{
+            WebkitOverflowScrolling: 'touch'
+          }}
         >
           {coupons.map((coupon, index) => (
             <View
               key={index}
+              className="flex-shrink-0 w-60 mb-0"
               onClick={() => handleCouponClick(coupon, index)}
             >
               <CouponCard {...coupon} />