feat(Home): 实现流程步骤分页显示和响应式箭头定位

添加流程步骤分页功能，每屏最多显示7个步骤，支持横向滑动浏览
优化底部箭头在不同屏幕尺寸下的定位，添加窗口resize监听
使用占位项保持分页间距一致，改进移动端滚动体验

@@ -36,14 +36,20 @@
             <!-- 麻绳背景 -->
             <div class="rope-background"></div>
 
-            <!-- 流程步骤 -->
-            <div class="process-steps" ref="processStepsRef">
+            <!-- 流程步骤：每屏最多显示7个，超出可横向滑动 -->
+            <div class="process-steps-wrapper" ref="processStepsRef">
+              <!-- 单页步骤容器：宽度占满一屏，Scroll Snap对齐 -->
+              <div
+                class="process-steps"
+                v-for="(page, pindex) in stepPages"
+                :key="pindex"
+              >
                 <div
-              v-for="(step, index) in processSteps"
-              :key="index"
+                  v-for="(step, sindex) in page"
+                  :key="pindex + '-' + sindex"
                   class="process-step"
-              :class="{ active: step.active }"
-              @click="selectStep(index)"
+                  :class="{ active: step.active, placeholder: step.is_placeholder }"
+                  @click="selectStep(pindex * steps_per_page + sindex)"
                 >
                   <!-- 顶部白色圆形占位（选中状态） -->
                   <div class="top-circle"></div>
@@ -53,6 +59,7 @@
                     <span class="step-text">{{ step.name }}</span>
                   </div>
                 </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" />
@@ -156,7 +163,7 @@
 </template>
 
 <script setup>
-import { ref, computed, nextTick, onMounted, onActivated, watch } from 'vue'
+import { ref, computed, nextTick, onMounted, onActivated, onUnmounted, watch } from 'vue'
 import VideoPlayer from '@/components/VideoPlayer.vue'
 import { useTitle } from '@vueuse/core';
 import { useRouter } from 'vue-router'
@@ -187,8 +194,44 @@ const videoOptions = ref({
 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%)' })
+// 底部箭头的动态样式（保持在容器内，避免被裁剪）
+const arrowStyle = ref({ left: '50%', bottom: '0.25rem', transform: 'translateX(-50%)' })
+// 底部箭头在不同屏幕下的rem偏移值
+const arrowBottomRem = ref(0.25)
+
+/**
+ * 处理窗口尺寸变化：更新箭头bottom并重新定位箭头
+ * @returns {void}
+ */
+const handleResize = () => {
+  updateArrowBottomByScreen()
+  updateArrowPosition()
+}
+
+// 每页显示的步骤数量（移动端要求最多7个）
+const steps_per_page = 7
+
+/**
+ * 计算分页后的步骤数组
+ * 说明：将流程步骤按每页7个分组，配合横向滚动实现分页显示
+ * @returns {Array<Array>} 分页后的步骤列表
+ */
+const stepPages = computed(() => {
+  const pages = []
+  const list = processSteps.value || []
+  for (let i = 0; i < list.length; i += steps_per_page) {
+    const page = list.slice(i, i + steps_per_page)
+    const pad = steps_per_page - page.length
+    if (pad > 0) {
+      for (let k = 0; k < pad; k++) {
+        // 占位项：用于固定每页7个槽位，保持间距一致
+        page.push({ id: `placeholder-${i}-${k}`, name: '', cover: '', active: false, is_placeholder: true })
+      }
+    }
+    pages.push(page)
+  }
+  return pages
+})
 
 // 获取当前选中的步骤
 const currentStep = computed(() => {
@@ -263,12 +306,28 @@ const selectStep = (index) => {
   processSteps.value.forEach((step, i) => {
     step.active = i === index
   })
+  // 根据选中索引滚动到对应页
+  const pageIndex = Math.floor(index / steps_per_page)
+  scrollToPage(pageIndex)
   // 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()
 }
 
+/**
+ * 滚动到指定分页
+ * 说明：容器按一屏宽度分页，横向滚动到目标页
+ * @param {number} pageIndex 目标页索引
+ */
+const scrollToPage = (pageIndex) => {
+  const container = processStepsRef.value
+  if (!container) return
+  const rect = container.getBoundingClientRect()
+  const pageWidth = rect.width
+  container.scrollTo({ left: pageIndex * pageWidth, behavior: 'smooth' })
+}
+
 // 三师七证数据列表
 const mastersList = ref([])
 
@@ -276,6 +335,11 @@ const mastersList = ref([])
 onMounted(async () => {
   // 进入页面时立即回到顶部
   ensurePageScrollTop()
+  // 初始化不同屏幕下箭头bottom适配并监听resize
+  updateArrowBottomByScreen()
+  if (typeof window !== 'undefined') {
+    window.addEventListener('resize', handleResize)
+  }
   await calculateLinePosition();
   // 调用接口获取首页数据
   const { code, list } = await homePageAPI();
@@ -324,6 +388,13 @@ onActivated(() => {
   ensurePageScrollTop()
 })
 
+// 组件卸载时清理resize监听
+onUnmounted(() => {
+  if (typeof window !== 'undefined') {
+    window.removeEventListener('resize', handleResize)
+  }
+})
+
 // 监听当前步骤变化，重新计算装饰线位置
 watch(currentStep, () => {
   calculateLinePosition()
@@ -524,6 +595,10 @@ const handleNewsClick = (item) => {
 /**
  * 更新底部箭头的位置，使其移动到当前选中步骤下方
  */
+/**
+ * 更新底部箭头的位置，使其移动到当前选中步骤下方
+ * @returns {void}
+ */
 const updateArrowPosition = () => {
   const containerEl = processStepsRef.value
   if (!containerEl) return
@@ -542,10 +617,33 @@ const updateArrowPosition = () => {
   // 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: `${centerX}px`,
-    bottom: '-1.25rem',
+    // 不同屏幕下适配底部偏移（rem单位）
+    bottom: `${arrowBottomRem.value}rem`,
     transform: 'translateX(-50%)'
   }
 }
+
+/**
+ * 依据屏幕宽度适配箭头bottom值
+ * 说明：遵循项目rem基准16px，将窗口宽度转换为rem做断点判断
+ * - ≤30rem（约≤480px）：0.25rem
+ * - ≤48rem（约≤768px）：0.3rem
+ * - >48rem：0.5rem
+ * @returns {void}
+ */
+const updateArrowBottomByScreen = () => {
+  let wRem = 48
+  if (typeof window !== 'undefined') {
+    wRem = (window.innerWidth || 768) / 16
+  }
+  if (wRem <= 30) {
+    arrowBottomRem.value = 0
+  } else if (wRem <= 48) {
+    arrowBottomRem.value = -0.25
+  } else {
+    arrowBottomRem.value = -0.5
+  }
+}
 </script>
 
 <style scoped>
@@ -598,7 +696,7 @@ const updateArrowPosition = () => {
 /* 响应式设计 */
 @media (max-width: 768px) {
   .ceremony-process {
-    padding: 2rem 1rem;
+    padding: 2rem 1rem 0.25rem;
   }
 
   .ceremony-intro {
@@ -957,13 +1055,38 @@ const updateArrowPosition = () => {
   gap: 0.5rem;
 }
 
+/* 流程步骤分页容器：横向滚动，每屏一页 */
+.process-steps-wrapper {
+  position: relative;
+  width: 100%;
+  display: flex;
+  overflow-x: auto;
+  scroll-snap-type: x mandatory;
+  -webkit-overflow-scrolling: touch;
+  /* 底部留白，确保容器高度包含箭头展示空间 */
+  padding-top: 0.5rem;
+  padding-bottom: 1rem;
+}
+
+/* 隐藏移动端滚动条以优化视觉 */
+.process-steps-wrapper::-webkit-scrollbar {
+  display: none;
+}
+
+/* 单页占满一屏，滚动对齐 */
+.process-steps-wrapper .process-steps {
+  flex: 0 0 100%;
+  scroll-snap-align: start;
+}
+
 /* 单个流程步骤 */
 .process-step {
   position: relative;
   display: flex;
   flex-direction: column;
   align-items: center;
-  flex: 1;
+  /* 固定占位，避免因数量不足导致单页拉伸 */
+  flex: 0 0 auto;
   cursor: pointer;
   transition: transform 0.2s ease;
 }
@@ -1043,6 +1166,16 @@ const updateArrowPosition = () => {
   pointer-events: none;
 }
 
+/* 占位项：隐藏内容但占据空间，保持间距统一 */
+.process-step.placeholder .step-content {
+  visibility: hidden;
+  pointer-events: none;
+}
+
+.process-step.placeholder .top-circle {
+  visibility: hidden;
+}
+
 /* 响应式调整 */
 @media (max-width: 48rem) {
   .ceremony-process {
@@ -1077,7 +1210,7 @@ const updateArrowPosition = () => {
 
 @media (max-width: 30rem) {
   .ceremony-process {
-    padding: 2rem 0.25rem;
+    padding: 2rem 1rem 0.5rem;
   }
 
 .ceremony-title img {