diff --git a/mobile-oa-h5/src/oa/components/OaFlowPreview.vue b/mobile-oa-h5/src/oa/components/OaFlowPreview.vue
new file mode 100644
index 00000000..cad03b08
--- /dev/null
+++ b/mobile-oa-h5/src/oa/components/OaFlowPreview.vue
@@ -0,0 +1,364 @@
+<template>
+  <div class="oa-flow-preview">
+    <div class="oa-flow-preview__title">审批流程</div>
+    <van-loading v-if="loading" vertical class="oa-flow-preview__loading">加载中…</van-loading>
+    <div v-else-if="!resolved" class="oa-flow-preview__pending">
+      {{ pendingMessage || '必填信息填写后，流程将自动显示' }}
+    </div>
+    <div v-else class="oa-flow-preview__chain">
+      <div v-if="!steps.length" class="oa-flow-preview__empty">暂无流程配置</div>
+      <div v-for="(s, idx) in steps" :key="s.id || idx" class="oa-flow-step">
+        <div class="oa-flow-rail">
+          <div class="oa-flow-dot" :class="{ end: s.type === 'end' }" />
+          <div v-if="idx < steps.length - 1" class="oa-flow-line" />
+        </div>
+        <div class="oa-flow-card">
+          <div class="oa-flow-card__name-row">
+            <span class="oa-flow-card__name">{{ s.name || '-' }}</span>
+            <span v-if="signBadge(s)" class="oa-flow-badge" :class="signBadge(s)">
+              {{ signBadgeText(s) }}
+            </span>
+          </div>
+          <div v-if="s.meta" class="oa-flow-card__meta">{{ s.meta }}</div>
+          <div v-if="s.resolveError" class="oa-flow-card__err">{{ s.resolveError }}</div>
+
+          <template v-if="isInitiatorSelect(s)">
+            <div class="oa-flow-card__people">
+              <span
+                v-for="p in displayPeople(s)"
+                :key="p.id"
+                class="oa-person-chip"
+              >
+                <span class="oa-person-chip__dot">{{ avatarChar(p.nickName) }}</span>
+                {{ p.nickName || p.id }}
+                <button
+                  type="button"
+                  class="oa-person-chip__x"
+                  @click="removeUser(s.id, p.id)"
+                >
+                  ×
+                </button>
+              </span>
+              <span v-if="!displayPeople(s).length" class="oa-flow-card__placeholder">
+                {{ s.type === 'cc' ? '请选择抄送人' : '请选择审批人' }}
+              </span>
+            </div>
+            <van-button size="small" plain type="primary" class="oa-flow-add" @click="openPicker(s)">
+              添加
+            </van-button>
+          </template>
+          <div v-else-if="(s.people || []).length" class="oa-flow-card__people">
+            <span v-for="p in s.people" :key="p.id" class="oa-person-chip">
+              <span class="oa-person-chip__dot">{{ avatarChar(p.nickName) }}</span>
+              {{ p.nickName || p.id }}
+            </span>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <van-popup v-model:show="pickerVisible" position="bottom" round :style="{ height: '70%' }">
+      <div class="oa-flow-picker">
+        <div class="oa-flow-picker__hd">
+          <span @click="pickerVisible = false">取消</span>
+          <strong>{{ pickerTitle }}</strong>
+          <span class="oa-flow-picker__ok" @click="confirmPicker">确定</span>
+        </div>
+        <van-search
+          v-model="pickerKeyword"
+          shape="round"
+          label-align="left"
+          input-align="left"
+          placeholder="搜索姓名或工号"
+        />
+        <div class="oa-flow-picker__list">
+          <van-checkbox-group v-model="pickerIds">
+            <van-cell
+              v-for="u in filteredUsers"
+              :key="u.id"
+              clickable
+              :title="u.nickName || u.id"
+              :label="u.userNo || undefined"
+              @click="togglePicker(u.id)"
+            >
+              <template #icon>
+                <van-checkbox class="oa-flow-picker__check" :name="u.id" @click.stop />
+              </template>
+            </van-cell>
+          </van-checkbox-group>
+          <van-empty v-if="!filteredUsers.length" description="暂无人员" />
+        </div>
+      </div>
+    </van-popup>
+  </div>
+</template>
+
+<script setup>
+import { computed, ref } from 'vue'
+
+const props = defineProps({
+  steps: { type: Array, default: () => [] },
+  resolved: { type: Boolean, default: true },
+  pendingMessage: { type: String, default: '' },
+  loading: { type: Boolean, default: false },
+  initiatorSelectByNode: { type: Object, default: () => ({}) },
+  userOptions: { type: Array, default: () => [] }
+})
+const emit = defineEmits(['update:initiatorSelectByNode'])
+
+const pickerVisible = ref(false)
+const pickerNodeId = ref('')
+const pickerTitle = ref('选择人员')
+const pickerIds = ref([])
+const pickerKeyword = ref('')
+
+const filteredUsers = computed(() => {
+  const q = pickerKeyword.value.trim().toLowerCase()
+  const list = props.userOptions || []
+  if (!q) return list
+  return list.filter(
+    (u) =>
+      String(u.nickName || '')
+        .toLowerCase()
+        .includes(q) ||
+      String(u.userNo || '')
+        .toLowerCase()
+        .includes(q) ||
+      String(u.id || '')
+        .toLowerCase()
+        .includes(q)
+  )
+})
+
+function isInitiatorSelect(s) {
+  const types =
+    Array.isArray(s.assigneeTypes) && s.assigneeTypes.length
+      ? s.assigneeTypes
+      : s.assigneeType
+        ? [s.assigneeType]
+        : []
+  return types.includes('initiator_select')
+}
+
+function signBadge(s) {
+  const m = String(s.signMode || '').toLowerCase()
+  if (m === 'and' || m === 'all' || m === '会签') return 'and'
+  if (m === 'or' || m === 'any' || m === '或签') return 'or'
+  return ''
+}
+
+function signBadgeText(s) {
+  const b = signBadge(s)
+  if (b === 'and') return '会签'
+  if (b === 'or') return '或签'
+  return ''
+}
+
+function avatarChar(name) {
+  const n = String(name || '').trim()
+  return n ? n.slice(0, 1) : '?'
+}
+
+function displayPeople(s) {
+  const ids = props.initiatorSelectByNode?.[s.id] || []
+  const map = new Map((props.userOptions || []).map((u) => [u.id, u]))
+  return ids
+    .map((id) => map.get(id) || { id, nickName: id })
+    .filter(Boolean)
+}
+
+function setNodeIds(nodeId, ids) {
+  emit('update:initiatorSelectByNode', {
+    ...(props.initiatorSelectByNode || {}),
+    [nodeId]: [...ids]
+  })
+}
+
+function removeUser(nodeId, userId) {
+  const cur = props.initiatorSelectByNode?.[nodeId] || []
+  setNodeIds(
+    nodeId,
+    cur.filter((id) => id !== userId)
+  )
+}
+
+function openPicker(s) {
+  pickerNodeId.value = s.id
+  pickerTitle.value = s.type === 'cc' ? '选择抄送人' : `选择${s.name || '审批人'}`
+  pickerIds.value = [...(props.initiatorSelectByNode?.[s.id] || [])]
+  pickerKeyword.value = ''
+  pickerVisible.value = true
+}
+
+function togglePicker(id) {
+  const set = new Set(pickerIds.value)
+  if (set.has(id)) set.delete(id)
+  else set.add(id)
+  pickerIds.value = [...set]
+}
+
+function confirmPicker() {
+  if (pickerNodeId.value) setNodeIds(pickerNodeId.value, pickerIds.value)
+  pickerVisible.value = false
+}
+</script>
+
+<style scoped>
+.oa-flow-preview {
+  margin-top: 16px;
+  padding: 14px 12px 8px;
+  background: #fff;
+  border-radius: 12px;
+  border: 1px solid var(--border, #dcebe4);
+}
+.oa-flow-preview__title {
+  margin-bottom: 12px;
+  font-size: 15px;
+  font-weight: 700;
+  color: var(--text-primary, #1f2a26);
+}
+.oa-flow-preview__loading,
+.oa-flow-preview__pending,
+.oa-flow-preview__empty {
+  padding: 12px 4px 16px;
+  color: var(--text-muted, #6b7b74);
+  font-size: 13px;
+  line-height: 1.5;
+}
+.oa-flow-step {
+  display: flex;
+  gap: 10px;
+  min-height: 56px;
+}
+.oa-flow-rail {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  width: 16px;
+}
+.oa-flow-dot {
+  width: 10px;
+  height: 10px;
+  margin-top: 6px;
+  border-radius: 50%;
+  background: var(--brand-green, #0a9f6d);
+}
+.oa-flow-dot.end {
+  background: #94a3b8;
+}
+.oa-flow-line {
+  flex: 1;
+  width: 2px;
+  margin: 4px 0;
+  background: #d1fae5;
+}
+.oa-flow-card {
+  flex: 1;
+  padding: 0 0 16px;
+  min-width: 0;
+}
+.oa-flow-card__name-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  align-items: center;
+}
+.oa-flow-card__name {
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--text-primary, #1f2a26);
+}
+.oa-flow-badge {
+  padding: 1px 6px;
+  border-radius: 4px;
+  font-size: 11px;
+}
+.oa-flow-badge.and {
+  color: #087f57;
+  background: #e9f9f2;
+}
+.oa-flow-badge.or {
+  color: #b45309;
+  background: #fff7e8;
+}
+.oa-flow-card__meta,
+.oa-flow-card__placeholder {
+  margin-top: 4px;
+  color: var(--text-muted, #6b7b74);
+  font-size: 12px;
+}
+.oa-flow-card__err {
+  margin-top: 4px;
+  color: #d14343;
+  font-size: 12px;
+}
+.oa-flow-card__people {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  margin-top: 8px;
+}
+.oa-person-chip {
+  display: inline-flex;
+  gap: 4px;
+  align-items: center;
+  padding: 4px 8px;
+  border-radius: 999px;
+  background: #f5f8f7;
+  font-size: 12px;
+  color: var(--text-primary, #1f2a26);
+}
+.oa-person-chip__dot {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 18px;
+  height: 18px;
+  border-radius: 50%;
+  background: var(--brand-green, #0a9f6d);
+  color: #fff;
+  font-size: 11px;
+}
+.oa-person-chip__x {
+  margin-left: 2px;
+  padding: 0;
+  border: 0;
+  background: transparent;
+  color: #94a3b8;
+  font-size: 14px;
+  line-height: 1;
+}
+.oa-flow-add {
+  margin-top: 8px;
+}
+.oa-flow-picker {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  background: #fff;
+}
+.oa-flow-picker__hd {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 14px 16px;
+  border-bottom: 1px solid var(--border, #dcebe4);
+}
+.oa-flow-picker__ok {
+  color: var(--brand-green, #0a9f6d);
+  font-weight: 600;
+}
+.oa-flow-picker__list {
+  flex: 1;
+  padding: 12px;
+  overflow: auto;
+}
+.oa-flow-picker__list .van-cell {
+  margin-bottom: 10px;
+  padding: 12px 14px;
+  border-radius: 10px;
+}
+.oa-flow-picker__check {
+  margin-right: 8px;
+}
+</style>
diff --git a/mobile-oa-h5/src/oa/schema-prep.js b/mobile-oa-h5/src/oa/schema-prep.js
new file mode 100644
index 00000000..44464865
--- /dev/null
+++ b/mobile-oa-h5/src/oa/schema-prep.js
@@ -0,0 +1,45 @@
+import { oaFormOption } from './form-option.js'
+
+function walkRules(rules, fn) {
+  const list = Array.isArray(rules) ? rules : []
+  for (const r of list) {
+    if (!r || typeof r !== 'object') continue
+    fn(r)
+    if (Array.isArray(r.children)) walkRules(r.children, fn)
+  }
+}
+
+/** 与 Web ensureOaUploadRuleProps 同思路的最小版 */
+export function ensureOaUploadRuleProps(rules) {
+  const next = JSON.parse(JSON.stringify(rules || []))
+  walkRules(next, (r) => {
+    if (r.type === 'upload' || r.type === 'fcUpload') {
+      r.props = { ...(r.props || {}) }
+      if (r.props.limit == null) r.props.limit = 9
+    }
+  })
+  return next
+}
+
+export function prepareMobileFormSchema(formSchemaJson) {
+  const schema = formSchemaJson || {}
+  const rawRule = Array.isArray(schema.rule)
+    ? schema.rule
+    : Array.isArray(schema)
+      ? schema
+      : []
+  const rule = ensureOaUploadRuleProps(rawRule)
+  const option = {
+    ...oaFormOption,
+    ...(schema.option || {}),
+    form: {
+      ...(schema.option?.form || {}),
+      labelAlign: 'top',
+      inputAlign: 'left',
+      colon: false
+    },
+    submitBtn: false,
+    resetBtn: false
+  }
+  return { rule, option }
+}
diff --git a/mobile-oa-h5/src/router.js b/mobile-oa-h5/src/router.js
index 4d7108ee..faaf2f8f 100644
--- a/mobile-oa-h5/src/router.js
+++ b/mobile-oa-h5/src/router.js
@@ -1,16 +1,15 @@
 import { createRouter, createWebHistory } from 'vue-router'
 import FormSink from './views/FormSink.vue'
+import OaStart from './views/OaStart.vue'
 
 export default createRouter({
   history: createWebHistory(import.meta.env.BASE_URL),
   routes: [
-    { path: '/', redirect: '/oa-form-sink' },
-    { path: '/oa-form-sink', component: FormSink },
     {
-      path: '/oa-start',
-      component: {
-        template: '<div style="padding:16px">oa-start 占位（阶段二）</div>'
-      }
-    }
+      path: '/',
+      redirect: (to) => ({ path: '/oa-form-sink', query: to.query, hash: to.hash })
+    },
+    { path: '/oa-form-sink', component: FormSink },
+    { path: '/oa-start', component: OaStart }
   ]
 })
diff --git a/mobile-oa-h5/src/views/OaStart.vue b/mobile-oa-h5/src/views/OaStart.vue
new file mode 100644
index 00000000..53219ae2
--- /dev/null
+++ b/mobile-oa-h5/src/views/OaStart.vue
@@ -0,0 +1,346 @@
+<template>
+  <div class="oa-start">
+    <header class="oa-start__hd">{{ appMeta.appName || '发起审批' }}</header>
+    <div v-if="detailLoading" class="oa-start__loading">
+      <van-loading vertical>加载模板…</van-loading>
+    </div>
+    <div v-else class="oa-start__body">
+      <form-create-mobile
+        v-model="formData"
+        v-model:api="fapi"
+        :rule="formRule"
+        :option="formOption"
+      />
+      <OaFlowPreview
+        v-model:initiator-select-by-node="initiatorSelectByNode"
+        :steps="flowSteps"
+        :resolved="flowResolved"
+        :pending-message="flowPendingMessage"
+        :loading="previewLoading"
+        :user-options="userOptions"
+      />
+    </div>
+    <footer class="oa-start__ft">
+      <van-button class="oa-start__btn" @click="onCancel">取消</van-button>
+      <van-button class="oa-start__btn" :loading="savingDraft" @click="saveDraft">
+        暂存草稿
+      </van-button>
+      <van-button
+        class="oa-start__btn"
+        type="primary"
+        :loading="submitting"
+        @click="submit"
+      >
+        提交
+      </van-button>
+    </footer>
+  </div>
+</template>
+
+<script setup>
+import { onMounted, onUnmounted, ref, watch } from 'vue'
+import { useRoute } from 'vue-router'
+import { showToast } from 'vant'
+import {
+  fetchOaTemplateDetail,
+  fetchOaFlowPreview,
+  fetchCreateOaInstanceDraft,
+  fetchUpdateOaInstanceDraft,
+  fetchOaInstanceDraftDetail,
+  fetchSubmitOaInstanceDraft,
+  fetchStartOaInstance,
+  fetchUserList
+} from '../api/oa.js'
+import { prepareMobileFormSchema } from '../oa/schema-prep.js'
+import OaFlowPreview from '../oa/components/OaFlowPreview.vue'
+
+const route = useRoute()
+const detailLoading = ref(true)
+const previewLoading = ref(false)
+const savingDraft = ref(false)
+const submitting = ref(false)
+const appMeta = ref({ id: '', appName: '' })
+const editingDraftId = ref('')
+const formData = ref({})
+const formRule = ref([])
+const formOption = ref({})
+const fapi = ref(null)
+const flowSteps = ref([])
+const flowResolved = ref(false)
+const flowPendingMessage = ref('必填信息填写后，流程将自动显示')
+const initiatorSelectByNode = ref({})
+const userOptions = ref([])
+
+let previewTimer = null
+let skipPreviewWatch = false
+
+function closeToMini(payload) {
+  try {
+    if (typeof wx !== 'undefined' && wx.miniProgram?.navigateBack) {
+      wx.miniProgram.postMessage({ data: payload || { action: 'oa-start-close' } })
+      wx.miniProgram.navigateBack()
+      return
+    }
+  } catch (_) {
+    /* ignore */
+  }
+  showToast((payload && payload.message) || '已完成（非小程序环境）')
+}
+
+async function loadUsers() {
+  try {
+    const pageSize = 100
+    const raw = []
+    let page = 1
+    for (;;) {
+      const res = await fetchUserList({ page, pageSize, status: '1' })
+      const list = res?.list || []
+      raw.push(...list)
+      if (list.length < pageSize) break
+      if (typeof res?.total === 'number' && raw.length >= res.total) break
+      page += 1
+      if (page > 50) break
+    }
+    userOptions.value = raw.map((u) => ({
+      id: String(u.id || ''),
+      nickName: u.nickName || '',
+      userNo: u.userNo || ''
+    })).filter((u) => u.id)
+  } catch {
+    userOptions.value = []
+  }
+}
+
+function stepsNeedInitiatorSelect(steps) {
+  return (steps || []).some((s) => {
+    const types =
+      Array.isArray(s.assigneeTypes) && s.assigneeTypes.length
+        ? s.assigneeTypes
+        : s.assigneeType
+          ? [s.assigneeType]
+          : []
+    return types.includes('initiator_select')
+  })
+}
+
+async function loadFlowPreview() {
+  if (!appMeta.value?.id) return
+  previewLoading.value = true
+  try {
+    const preview = await fetchOaFlowPreview(appMeta.value.id, {
+      formData: { ...formData.value },
+      initiatorSelectByNode: { ...initiatorSelectByNode.value }
+    })
+    flowResolved.value = preview?.resolved !== false
+    flowPendingMessage.value =
+      preview?.message || '必填信息填写后，流程将自动显示'
+    flowSteps.value = flowResolved.value ? preview?.steps || [] : []
+    if (stepsNeedInitiatorSelect(flowSteps.value) && !userOptions.value.length) {
+      await loadUsers()
+    }
+  } catch (e) {
+    showToast(e?.message || '审批流预览失败')
+    flowSteps.value = []
+    flowResolved.value = true
+  } finally {
+    previewLoading.value = false
+  }
+}
+
+function scheduleFlowPreview() {
+  if (!appMeta.value?.id || detailLoading.value) return
+  if (previewTimer) clearTimeout(previewTimer)
+  previewTimer = setTimeout(() => {
+    loadFlowPreview()
+  }, 300)
+}
+
+async function loadByAppId(appId) {
+  const detail = await fetchOaTemplateDetail(appId)
+  appMeta.value = {
+    id: appId,
+    appName: detail?.appName || detail?.name || '发起审批'
+  }
+  const prepared = prepareMobileFormSchema(detail?.formSchemaJson)
+  formRule.value = prepared.rule
+  formOption.value = prepared.option
+  await loadFlowPreview()
+}
+
+async function bootstrap() {
+  detailLoading.value = true
+  skipPreviewWatch = true
+  try {
+    const appId = String(route.query.appId || '').trim()
+    const draftId = String(route.query.draftId || '').trim()
+    if (draftId) {
+      const d = await fetchOaInstanceDraftDetail(draftId)
+      editingDraftId.value = draftId
+      const aid = String(d?.appId || '').trim()
+      if (!aid) throw new Error('草稿缺少 appId')
+      formData.value = d.formData && typeof d.formData === 'object' ? { ...d.formData } : {}
+      initiatorSelectByNode.value =
+        d.initiatorSelectByNode && typeof d.initiatorSelectByNode === 'object'
+          ? { ...d.initiatorSelectByNode }
+          : {}
+      await loadByAppId(aid)
+    } else if (appId) {
+      formData.value = {}
+      initiatorSelectByNode.value = {}
+      editingDraftId.value = ''
+      await loadByAppId(appId)
+    } else {
+      showToast('缺少 appId')
+    }
+  } catch (e) {
+    showToast(e?.message || '加载失败')
+  } finally {
+    detailLoading.value = false
+    skipPreviewWatch = false
+  }
+}
+
+function onCancel() {
+  closeToMini({ action: 'oa-start-cancel' })
+}
+
+async function saveDraft() {
+  if (!appMeta.value?.id) return
+  savingDraft.value = true
+  try {
+    const payload = {
+      formData: { ...formData.value },
+      initiatorSelectByNode: { ...initiatorSelectByNode.value },
+      title: appMeta.value.appName || ''
+    }
+    if (editingDraftId.value) {
+      await fetchUpdateOaInstanceDraft(editingDraftId.value, payload)
+    } else {
+      const created = await fetchCreateOaInstanceDraft({
+        appId: appMeta.value.id,
+        ...payload
+      })
+      if (created?.id) editingDraftId.value = created.id
+    }
+    showToast('草稿已保存')
+    closeToMini({ action: 'oa-start-draft', draftId: editingDraftId.value })
+  } catch (e) {
+    showToast(e?.message || '保存草稿失败')
+  } finally {
+    savingDraft.value = false
+  }
+}
+
+async function submit() {
+  if (!appMeta.value?.id) return
+  for (const s of flowSteps.value) {
+    if (s.type !== 'approval') continue
+    const types =
+      Array.isArray(s.assigneeTypes) && s.assigneeTypes.length
+        ? s.assigneeTypes
+        : s.assigneeType
+          ? [s.assigneeType]
+          : []
+    if (!types.includes('initiator_select')) continue
+    const ids = initiatorSelectByNode.value[s.id] || []
+    if (!ids.length) {
+      showToast(`请为「${s.name || '审批人'}」选择审批人`)
+      return
+    }
+  }
+  if (fapi.value?.validate) {
+    try {
+      await fapi.value.validate()
+    } catch {
+      showToast('请完善表单必填项')
+      return
+    }
+  }
+  submitting.value = true
+  try {
+    const payload = {
+      formData: { ...formData.value },
+      initiatorSelectByNode: { ...initiatorSelectByNode.value }
+    }
+    let data
+    if (editingDraftId.value) {
+      data = await fetchSubmitOaInstanceDraft(editingDraftId.value, {
+        ...payload,
+        title: appMeta.value.appName || ''
+      })
+    } else {
+      data = await fetchStartOaInstance({
+        appId: appMeta.value.id,
+        ...payload
+      })
+    }
+    showToast('提交成功')
+    closeToMini({
+      action: 'oa-start-submitted',
+      instanceId: data?.id,
+      message: '提交成功'
+    })
+  } catch (e) {
+    showToast(e?.message || '提交失败')
+  } finally {
+    submitting.value = false
+  }
+}
+
+watch(
+  [formData, initiatorSelectByNode],
+  () => {
+    if (skipPreviewWatch) return
+    scheduleFlowPreview()
+  },
+  { deep: true }
+)
+
+onMounted(() => {
+  bootstrap()
+})
+
+onUnmounted(() => {
+  if (previewTimer) clearTimeout(previewTimer)
+})
+</script>
+
+<style scoped>
+.oa-start {
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  background: var(--bg-page, #f5f8f7);
+}
+.oa-start__hd {
+  padding: 14px 16px;
+  font-weight: 700;
+  color: #fff;
+  background: linear-gradient(135deg, var(--brand-green, #0a9f6d), var(--brand-green-dark, #087f57));
+}
+.oa-start__loading {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 48px 16px;
+}
+.oa-start__body {
+  flex: 1;
+  padding: 12px 12px 96px;
+}
+.oa-start__ft {
+  position: fixed;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  display: flex;
+  gap: 8px;
+  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
+  background: #fff;
+  border-top: 1px solid var(--border, #dcebe4);
+}
+.oa-start__btn {
+  flex: 1;
+}
+</style>