feat(首页): 添加流程步骤底部箭头跟随效果和轮播触摸滑动功能

- 将底部箭头改为全局组件并实现跟随当前选中步骤移动
- 为新闻轮播添加触摸滑动切换功能，支持左右滑动切换
- 移除路由中未使用的滚动行为配置
- 优化轮播容器触摸事件处理，避免与垂直滚动冲突

 /*
  * @Date: 2025-10-30 10:29:15
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-11-04 10:53:52
+ * @LastEditTime: 2025-11-04 20:35:35
  * @FilePath: /stdj_h5/src/router/index.js
  * @Description: 文件描述
  */
@@ -53,13 +53,6 @@ const routes = [
 const router = createRouter({
   history: createWebHashHistory('/index.html'),
   routes,
-  scrollBehavior(to, from, savedPosition) {
-    if (savedPosition) {
-      return savedPosition
-    } else {
-      return { top: 0 }
-    }
-  }
 })
 
 // 路由守卫

@@ -37,7 +37,7 @@
             <div class="rope-background"></div>
 
             <!-- 流程步骤 -->
-            <div class="process-steps">
+            <div class="process-steps" ref="processStepsRef">
               <div
               v-for="(step, index) in processSteps"
               :key="index"
@@ -52,11 +52,10 @@
                 <div class="step-content">
                   <span class="step-text">{{ step.name }}</span>
                 </div>
-
-                <!-- 底部箭头（选中状态） -->
-                <div v-if="step.active" class="bottom-arrow">
-                  <img src="https://cdn.ipadbiz.cn/stdj/images/home/%E7%82%B9@2x.png" alt="选中" />
-                </div>
+              </div>
+              <!-- 全局底部箭头：跟随选中项移动 -->
+              <div v-show="processSteps.length" class="bottom-arrow moving-arrow" :style="arrowStyle">
+                <img src="https://cdn.ipadbiz.cn/stdj/images/home/%E7%82%B9@2x.png" alt="选中" />
               </div>
             </div>
           </div>
@@ -116,7 +115,13 @@
         </div>
 
         <!-- 轮播容器 -->
-        <div class="news-carousel-container">
+        <div
+          class="news-carousel-container"
+          ref="newsCarouselContainer"
+          @touchstart="onTouchStart"
+          @touchmove="onTouchMove"
+          @touchend="onTouchEnd"
+        >
           <div class="news-carousel" ref="newsCarousel">
             <div class="news-item" v-for="(item, index) in displayNewsItems" :key="index" @click="handleNewsClick(item)">
               <div class="news-image">
@@ -180,6 +185,10 @@ const videoOptions = ref({
 
 // 法会流程步骤数据
 const processSteps = ref([])
+// 流程步骤容器引用
+const processStepsRef = ref(null)
+// 底部箭头的动态样式
+const arrowStyle = ref({ left: '50%', bottom: '-1.25rem', transform: 'translateX(-50%)' })
 
 // 获取当前选中的步骤
 const currentStep = computed(() => {
@@ -228,13 +237,18 @@ const calculateLinePosition = async () => {
   }
 }
 
-// 点击切换步骤状态
+/**
+ * 点击切换步骤状态并更新底部箭头位置
+ * @param {number} index 选中步骤索引
+ */
 const selectStep = (index) => {
   processSteps.value.forEach((step, i) => {
     step.active = i === index
   })
   // 切换步骤后重新计算装饰线位置
   calculateLinePosition()
+  // 切换步骤后更新底部箭头位置
+  updateArrowPosition()
 }
 
 // 三师七证数据列表
@@ -277,6 +291,8 @@ onMounted(async () => {
     // 初始化轮播位置
     nextTick(() => {
       updateCarouselPosition(false)
+      // 初始化底部箭头位置
+      updateArrowPosition()
     })
   }
 })
@@ -284,6 +300,7 @@ onMounted(async () => {
 // 监听当前步骤变化，重新计算装饰线位置
 watch(currentStep, () => {
   calculateLinePosition()
+  updateArrowPosition()
 }, { deep: true })
 
 // 查看更多按钮点击事件
@@ -329,6 +346,15 @@ const viewMore = (type, item) => {
 const newsCarousel = ref(null)
 const currentSlide = ref(1) // 从1开始，因为0是克隆的最后一项
 const isTransitioning = ref(false)
+// 轮播容器引用（用于触摸滑动）
+const newsCarouselContainer = ref(null)
+// 触摸滑动相关状态
+const touchStartX = ref(0)
+const touchStartY = ref(0)
+const touchDeltaX = ref(0)
+const touchDeltaY = ref(0)
+const isSwiping = ref(false)
+const swipeThreshold = 30 // 滑动触发阈值，单位px
 
 // 新闻数据
 const newsItems = ref([])
@@ -400,6 +426,64 @@ const updateCarouselPosition = (animated = true) => {
   carouselEl.style.transform = `translateX(-${distance}px)`
 }
 
+/**
+ * 触摸开始事件：记录初始触摸点
+ * @param {TouchEvent} e 触摸事件对象
+ */
+const onTouchStart = (e) => {
+  const t = e.touches && e.touches[0]
+  if (!t) return
+  touchStartX.value = t.clientX
+  touchStartY.value = t.clientY
+  touchDeltaX.value = 0
+  touchDeltaY.value = 0
+  isSwiping.value = false
+}
+
+/**
+ * 触摸移动事件：计算水平与垂直位移，判断是否为水平滑动
+ * @param {TouchEvent} e 触摸事件对象
+ */
+const onTouchMove = (e) => {
+  const t = e.touches && e.touches[0]
+  if (!t) return
+  touchDeltaX.value = t.clientX - touchStartX.value
+  touchDeltaY.value = t.clientY - touchStartY.value
+  // 以水平位移为主且超过轻微阈值时，认定为滑动
+  if (Math.abs(touchDeltaX.value) > Math.abs(touchDeltaY.value) && Math.abs(touchDeltaX.value) > 10) {
+    isSwiping.value = true
+    // 阻止默认滚动，避免与页面垂直滚动冲突
+    e.preventDefault()
+  } else {
+    isSwiping.value = false
+  }
+}
+
+/**
+ * 触摸结束事件：根据滑动距离与方向触发上一张/下一张
+ */
+const onTouchEnd = () => {
+  if (!isSwiping.value) return
+  if (isTransitioning.value) return
+
+  if (Math.abs(touchDeltaX.value) >= swipeThreshold) {
+    if (touchDeltaX.value < 0) {
+      // 左滑，下一张
+      nextSlide()
+    } else {
+      // 右滑，上一张
+      prevSlide()
+    }
+  }
+
+  // 重置状态
+  touchStartX.value = 0
+  touchStartY.value = 0
+  touchDeltaX.value = 0
+  touchDeltaY.value = 0
+  isSwiping.value = false
+}
+
 // 处理新闻点击事件
 const handleNewsClick = (item) => {
   // 这里可以添加跳转到新闻详情页面的逻辑
@@ -409,6 +493,32 @@ const handleNewsClick = (item) => {
     router.push({ name: 'NewsDetail', params: { id: item.id } })
   }
 }
+
+/**
+ * 更新底部箭头的位置，使其移动到当前选中步骤下方
+ */
+const updateArrowPosition = () => {
+  const containerEl = processStepsRef.value
+  if (!containerEl) return
+
+  const stepsEls = containerEl.querySelectorAll('.process-step')
+  const activeIndex = processSteps.value.findIndex(s => s.active)
+  if (activeIndex < 0 || !stepsEls[activeIndex]) return
+
+  const activeEl = stepsEls[activeIndex]
+  const containerRect = containerEl.getBoundingClientRect()
+  const activeRect = activeEl.getBoundingClientRect()
+
+  // 计算选中项中心点相对容器的left位置
+  const centerX = activeRect.left + activeRect.width / 2 - containerRect.left
+
+  // 使用px进行精确定位（移动端rem布局下，定位需要像素计算）
+  arrowStyle.value = {
+    left: `${centerX}px`,
+    bottom: '-1.25rem',
+    transform: 'translateX(-50%)'
+  }
+}
 </script>
 
 <style scoped>
@@ -895,6 +1005,15 @@ const handleNewsClick = (item) => {
 .bottom-arrow img {
   width: 1rem;
   height: 1rem;
+  /* 底部箭头左右位移动画 */
+  animation: arrowHSlide 1.8s ease-in-out infinite;
+  will-change: transform;
+}
+
+/* 可移动箭头样式：启用left过渡，实现平滑跟随 */
+.moving-arrow {
+  transition: left 0.3s ease;
+  pointer-events: none;
 }
 
 /* 响应式调整 */
@@ -1228,6 +1347,8 @@ const handleNewsClick = (item) => {
   overflow: hidden;
   margin-top: 2rem;
   z-index: 2; /* 确保轮播容器在背景图片之上 */
+  /* 仅允许垂直滚动，优化左右滑动体验 */
+  touch-action: pan-y;
 }
 
 .news-carousel {