diff --git a/src/apis.js b/src/apis.js
index 2873cb5..f00f561 100644
--- a/src/apis.js
+++ b/src/apis.js
@@ -8,7 +8,7 @@ try {
 
     switch (envVersion) {
         case "develop": // 开发版
-            // BASE_URL = "http://192.168.1.5:8000/api/shoot";
+            // BASE_URL = "http://192.168.1.2:8000/api/shoot";
             BASE_URL = "https://apitest.shelingxingqiu.com/api/shoot";
             break;
         case "trial": // 体验版
@@ -269,6 +269,10 @@ export const createPractiseV2API = (trainingType, difficultyLevel) => {
     });
 };
 
+export const getCurrentPractiseAPI = () => {
+    return request("GET", "/user/practice/current");
+};
+
 export const startPractiseAPI = (id) => {
     return request("POST", "/user/practice/begin", { id });
 };
diff --git a/src/canvas.js b/src/canvas.js
index 7c5b66b..853fae6 100644
--- a/src/canvas.js
+++ b/src/canvas.js
@@ -635,7 +635,7 @@ export function renderScores(ctx, arrows = [], bgImg) {
         );
       } else {
         ctx.drawImage(
-          "../static/score-bg.png",
+          "/static/score-bg.png",
           16 + (i % 9) * 30,
           290 + Math.ceil((i + 1) / 9) * 30,
           27,
@@ -657,7 +657,7 @@ export function renderScores(ctx, arrows = [], bgImg) {
         ctx.drawImage(bgImg, 24 + rowIndex * 42, i > 5 ? 362 : 320, 38, 38);
       } else {
         ctx.drawImage(
-          "../static/score-bg.png",
+          "/static/score-bg.png",
           24 + rowIndex * 42,
           i > 5 ? 362 : 320,
           38,
@@ -706,22 +706,39 @@ export async function sharePractiseData(canvasId, type, user, data) {
     );
     const bgImg = await loadCanvasImage(canvas, bgImgSrc);
 
-    const avatarImgPromise = loadImage(user.avatar).then((path) =>
-      loadCanvasImage(canvas, path)
-    );
-    const lvlImgPromise = loadImage(user.lvlImage).then((path) =>
-      loadCanvasImage(canvas, path)
-    );
+    // 头像与段位框属于装饰图片，缺失时使用兜底或跳过，避免阻断分享。
+    const loadProfileImage = async (src, fallbackSrc = "", label = "") => {
+      const normalizedSrc =
+        typeof src === "string" && src.startsWith("../static/")
+          ? src.slice(2)
+          : src;
+      if (normalizedSrc) {
+        try {
+          const path = await loadImage(normalizedSrc);
+          return await loadCanvasImage(canvas, path);
+        } catch (error) {
+          console.warn(`share ${label} image load failed`, error);
+        }
+      }
+      return fallbackSrc ? loadCanvasImage(canvas, fallbackSrc) : null;
+    };
 
-    let titleImageSrc = "../static/first-try-title.png";
+    const avatarImgPromise = loadProfileImage(
+      user?.avatar,
+      "/static/user-icon.png",
+      "avatar"
+    );
+    const lvlImgPromise = loadProfileImage(user?.lvlImage, "", "level");
+
+    let titleImageSrc = "/static/first-try-title.png";
     if (type == 2) {
-      titleImageSrc = "../static/practise-one-title.png";
+      titleImageSrc = "/static/practise-one-title.png";
     } else if (type == 3) {
-      titleImageSrc = "../static/practise-two-title.png";
+      titleImageSrc = "/static/practise-two-title.png";
     }
     const titleImgPromise = loadCanvasImage(canvas, titleImageSrc);
-    const scoreBgImgPromise = loadCanvasImage(canvas, "../static/score-bg.png");
-    const qrCodeImgPromise = loadCanvasImage(canvas, "../static/qr-code.png");
+    const scoreBgImgPromise = loadCanvasImage(canvas, "/static/score-bg.png");
+    const qrCodeImgPromise = loadCanvasImage(canvas, "/static/qr-code.png");
 
     const [avatarImg, lvlImg, titleImg, scoreBgImg, qrCodeImg] =
       await Promise.all([
@@ -738,8 +755,8 @@ export async function sharePractiseData(canvasId, type, user, data) {
 
     ctx.drawImage(bgImg, 0, 0, width, height);
 
-    drawRoundImage(ctx, avatarImg, 17, 20, 32, 32, 20);
-    ctx.drawImage(lvlImg, 12, 15, 42, 42);
+    if (avatarImg) drawRoundImage(ctx, avatarImg, 17, 20, 32, 32, 20);
+    if (lvlImg) ctx.drawImage(lvlImg, 12, 15, 42, 42);
 
     renderText(ctx, user.nickName, 13, "#fff", 58, 34);
     renderRankTitle(ctx, user.lvlName);
diff --git a/src/components/BattleHeader.vue b/src/components/BattleHeader.vue
index 8bf6458..9cdc95e 100644
--- a/src/components/BattleHeader.vue
+++ b/src/components/BattleHeader.vue
@@ -38,7 +38,7 @@ const isMember = (player = {}) => player.vip === true || player.sVip === true;
 </script>
 
 <template>
-  <view class="container" :style="{ paddingTop: showHeader ? '5px' : '0' }">
+  <view class="container">
     <image
       v-if="showHeader"
       :src="`https://static.shelingxingqiu.com/shootmini/static/battle-header${players.length ? '-melee' : ''}.png`"
@@ -47,7 +47,7 @@ const isMember = (player = {}) => player.vip === true || player.sVip === true;
     <view
       v-if="!players.length && blueTeam.length && redTeam.length"
       class="players"
-      :style="{ paddingTop: showHeader ? '15px' : '0' }"
+      :style="{ paddingTop: showHeader ? '48rpx' : '0' }"
     >
       <view>
         <view
@@ -158,7 +158,7 @@ const isMember = (player = {}) => player.vip === true || player.sVip === true;
 .container > image:first-child {
   position: absolute;
   width: 100%;
-  top: -5px;
+  /* top: -5px; */
   z-index: 1;
   pointer-events: none;
 }
diff --git a/src/components/BowTarget.vue b/src/components/BowTarget.vue
index 7da471d..910e3cf 100644
--- a/src/components/BowTarget.vue
+++ b/src/components/BowTarget.vue
@@ -12,7 +12,7 @@ import PointSwitcher from "@/components/PointSwitcher.vue";
 import BowShotEffect from "@/components/BowShotEffect.vue";
 
 import { MESSAGETYPES, MESSAGETYPESV2 } from "@/constants";
-import { simulShootAPI } from "@/apis";
+import { simulShootAPI, laserAimAPI, laserCloseAPI } from "@/apis";
 import useStore from "@/store";
 import { storeToRefs } from "pinia";
 const store = useStore();
@@ -357,6 +357,14 @@ const simulShoot2 = async () => {
   }
 };
 
+const openAim = async () => {
+  await laserAimAPI();
+};
+
+const closeAim = async () => {
+  await laserCloseAPI();
+};
+
 const env = computed(() => {
   const accountInfo = uni.getAccountInfoSync();
   return accountInfo.miniProgram.envVersion;
@@ -524,6 +532,8 @@ onBeforeUnmount(() => {
     <view class="simul" v-if="env !== 'release'">
       <button @click="simulShoot">模拟</button>
       <button @click="simulShoot2">射箭</button>
+      <button @click="openAim">开瞄</button>
+      <button @click="closeAim">关瞄</button>
     </view>
   </view>
 </template>
diff --git a/src/matchWebsocket.js b/src/matchWebsocket.js
index 28bc04d..4e4ad12 100644
--- a/src/matchWebsocket.js
+++ b/src/matchWebsocket.js
@@ -849,6 +849,7 @@ export function connectMatchWebSocket(options = {}) {
     token,
     mode,
     requestPracticeInfoOnOpen = false,
+    appHideResumable = false,
     force = false,
     reconnecting = false,
     reconnectReason = "",
@@ -920,6 +921,7 @@ export function connectMatchWebSocket(options = {}) {
     isMelee:
       Number.isFinite(normalizedMode) ? normalizedMode > 3 : undefined,
     requestPracticeInfoOnOpen: requestPracticeInfoOnOpen === true,
+    appHideResumable: appHideResumable === true,
     meleeHalfRest: isSameContext
       ? currentContext?.meleeHalfRest === true
       : false,
@@ -1016,9 +1018,22 @@ export function connectMatchWebSocketFromNotice(notice, fallbackUserId) {
   });
 }
 
+export function setMatchAppHideResumable(enabled) {
+  if (!currentContext) return;
+  currentContext.appHideResumable = enabled === true;
+}
+
 export function closeMatchWebSocket(options = {}) {
   // 默认关闭时会发送 LEAVE；内部切换连接可通过 sendLeave:false 跳过。
-  const { sendLeave: shouldSendLeave = true, reason = "manual" } = options;
+  const { reason = "manual" } = options;
+  // 可恢复训练切后台只断开传输层，不能把它上报成主动离场。
+  const shouldSendLeave =
+    options.sendLeave === undefined
+      ? !(
+          reason === "app-hide" &&
+          currentContext?.appHideResumable === true
+        )
+      : options.sendLeave === true;
 
   manualClose = true;
   clearReconnectTimer();
@@ -1051,6 +1066,7 @@ export default {
   ServerMessageType,
   connectMatchWebSocket,
   connectMatchWebSocketFromNotice,
+  setMatchAppHideResumable,
   closeMatchWebSocket,
   forceReconnectMatchWebSocket,
   handleMatchNetworkStatusChange,
diff --git a/src/pages/match-detail.vue b/src/pages/match-detail.vue
index b604584..e2bc460 100644
--- a/src/pages/match-detail.vue
+++ b/src/pages/match-detail.vue
@@ -13,10 +13,10 @@ const data = ref({
   rounds: [],
 });
 const players = ref([]);
+const isLoading = ref(true);
+const loadError = ref("");
 
-onLoad(async (options) => {
-  if (!options.battleId) return;
-  battleId.value = options.battleId || "60510101693403136";
+const loadBattle = async () => {
   const result = await getBattleAPI(battleId.value);
   data.value = result;
   if (result.mode > 3) {
@@ -62,6 +62,32 @@ onLoad(async (options) => {
 
     players.value = [...rankedPlayers, ...unrankedPlayers];
   }
+
+  // 数据和派生列表均已就绪后再关闭占位，避免空壳闪烁。
+  isLoading.value = false;
+};
+
+const requestBattle = () => {
+  if (!battleId.value) return;
+
+  isLoading.value = true;
+  loadError.value = "";
+  loadBattle().catch((error) => {
+    console.error("加载比赛详情失败:", error);
+    loadError.value = "赛况加载失败";
+    isLoading.value = false;
+  });
+};
+
+onLoad((options) => {
+  if (!options.battleId) {
+    loadError.value = "缺少比赛信息";
+    isLoading.value = false;
+    return;
+  }
+
+  battleId.value = options.battleId;
+  requestBattle();
 });
 
 const checkBowData = (selected) => {
@@ -80,6 +106,17 @@ const checkBowData = (selected) => {
 <template>
   <Container title="详情">
     <view class="container">
+      <view v-if="isLoading" class="page-state">
+        <text>赛况加载中...</text>
+      </view>
+      <view
+        v-else-if="loadError"
+        class="page-state page-state--error"
+        @click="requestBattle"
+      >
+        <text>{{ loadError }}</text>
+        <text v-if="battleId" class="retry-text">点击重新加载</text>
+      </view>
       <BattleHeader
         v-if="data.mode <= 3"
         :winner="data.winTeam"
@@ -165,6 +202,22 @@ const checkBowData = (selected) => {
   width: 100%;
   height: 100%;
 }
+.page-state {
+  min-height: 60vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  color: rgba(255, 255, 255, 0.6);
+  font-size: 26rpx;
+}
+.page-state--error {
+  color: rgba(255, 255, 255, 0.72);
+}
+.retry-text {
+  margin-top: 16rpx;
+  color: #fed847;
+}
 .score-header,
 .score-row {
   display: flex;
diff --git a/src/pages/practise-one.vue b/src/pages/practise-one.vue
index 28390ad..251e055 100644
--- a/src/pages/practise-one.vue
+++ b/src/pages/practise-one.vue
@@ -1,6 +1,6 @@
 <script setup>
-import { ref, onMounted, onBeforeUnmount } from "vue";
-import { onLoad } from "@dcloudio/uni-app";
+import { ref, nextTick, onMounted, onBeforeUnmount } from "vue";
+import { onHide, onLoad, onShow } from "@dcloudio/uni-app";
 import Container from "@/components/Container.vue";
 import ShootProgress from "@/components/ShootProgress.vue";
 import BowTarget from "@/components/BowTarget.vue";
@@ -16,10 +16,17 @@ import audioManager from "@/audioManager";
 import {
   createPractiseAPI,
   endPractiseAPI,
+  getCurrentPractiseAPI,
   getPractiseAPI,
   startPractiseAPI,
 } from "@/apis";
-import { connectMatchWebSocket, closeMatchWebSocket } from "@/matchWebsocket";
+import {
+  connectMatchWebSocket,
+  closeMatchWebSocket,
+  setMatchAppHideResumable,
+  MATCH_WS_PRACTICE_SYNC_EVENT,
+  MATCH_WS_STATE_EVENT,
+} from "@/matchWebsocket";
 import { sharePractiseData } from "@/canvas";
 import { wxShare, debounce } from "@/util";
 import { MESSAGETYPESV2, roundsName } from "@/constants";
@@ -35,11 +42,21 @@ const isSvip = ref(false);
 const total = 12;
 const practiseResult = ref({});
 const practiseId = ref("");
+const serverAddr = ref("");
 const showGuide = ref(false);
 const tips = ref("");
 const targetType = ref(1);
 const sharing = ref(false);
 const exiting = ref(false);
+const hiddenWhileActive = ref(false);
+const resumeInFlight = ref(false);
+const foregroundResumeSyncPending = ref(false);
+const pageVisible = ref(true);
+const appHideResumable = ref(false);
+const restoringSnapshot = ref(false);
+let practiceSyncTimer = null;
+let waitingPracticeSync = false;
+const PRACTICE_SYNC_TIMEOUT_MS = 5000;
 const RESULT_TIP_CDN = "https://static.shelingxingqiu.com/shootmini/static";
 
 onLoad((options) => {
@@ -48,6 +65,63 @@ onLoad((options) => {
   }
 });
 
+const setPracticeAppHideResumable = (enabled) => {
+  appHideResumable.value = enabled === true;
+  setMatchAppHideResumable(appHideResumable.value);
+};
+
+const clearPracticeSyncTimer = () => {
+  if (!practiceSyncTimer) return;
+  clearTimeout(practiceSyncTimer);
+  practiceSyncTimer = null;
+};
+
+const cancelPracticeSyncWait = () => {
+  waitingPracticeSync = false;
+  clearPracticeSyncTimer();
+};
+
+const startPracticeSyncTimer = () => {
+  clearPracticeSyncTimer();
+  waitingPracticeSync = true;
+  practiceSyncTimer = setTimeout(() => {
+    practiceSyncTimer = null;
+    if (!waitingPracticeSync) return;
+
+    waitingPracticeSync = false;
+    foregroundResumeSyncPending.value = false;
+    hiddenWhileActive.value = false;
+    closeMatchWebSocket({
+      reason: "legacy-practice-resume-timeout",
+      sendLeave: false,
+    });
+    uni.showToast({
+      title: "训练重连失败，请重试",
+      icon: "none",
+    });
+  }, PRACTICE_SYNC_TIMEOUT_MS);
+};
+
+const connectPracticeServer = () => {
+  const latestServerAddr = String(serverAddr.value || "").trim();
+  if (!practiseId.value || !latestServerAddr) return false;
+
+  cancelPracticeSyncWait();
+  closeMatchWebSocket({
+    reason: "legacy-practice-switch",
+    sendLeave: false,
+  });
+  connectMatchWebSocket({
+    serverAddr: latestServerAddr,
+    matchId: practiseId.value,
+    userId: user.value.id,
+    requestPracticeInfoOnOpen: true,
+    appHideResumable: true,
+  });
+  setPracticeAppHideResumable(true);
+  return true;
+};
+
 const createPractise = async () => {
   closeMatchWebSocket({ reason: "practice-recreate" });
   const result = await createPractiseAPI(
@@ -64,11 +138,8 @@ const createPractise = async () => {
     });
     return null;
   }
-  connectMatchWebSocket({
-    serverAddr: result.serverAddr,
-    matchId: result.id,
-    userId: user.value.id,
-  });
+  serverAddr.value = result.serverAddr;
+  connectPracticeServer();
   return result;
 };
 
@@ -94,6 +165,10 @@ const onReady = async () => {
 };
 
 const onOver = async (message) => {
+  setPracticeAppHideResumable(false);
+  hiddenWhileActive.value = false;
+  foregroundResumeSyncPending.value = false;
+  cancelPracticeSyncWait();
   practiseResult.value = Array.isArray(message?.details)
     ? message
     : await getPractiseAPI(practiseId.value);
@@ -105,11 +180,16 @@ async function onReceiveMessage(msg) {
     isSvip.value = msg.sVip === true;
     scores.value = Array.isArray(msg.details) ? msg.details : scores.value;
   } else if (msg.type === MESSAGETYPESV2.BattleEnd) {
+    setPracticeAppHideResumable(false);
+    hiddenWhileActive.value = false;
+    foregroundResumeSyncPending.value = false;
+    cancelPracticeSyncWait();
     setTimeout(() => onOver(msg), 1500);
   }
 }
 
 async function onComplete() {
+  setPracticeAppHideResumable(false);
   const validArrows = (practiseResult.value.details || []).filter(
     (a) => a.x !== -30 && a.y !== -30
   );
@@ -117,6 +197,7 @@ async function onComplete() {
     uni.navigateBack();
   } else {
     practiseId.value = "";
+    serverAddr.value = "";
     practiseResult.value = {};
     start.value = false;
     scores.value = [];
@@ -128,6 +209,10 @@ async function onComplete() {
 async function exitPractise() {
   if (exiting.value) return;
   exiting.value = true;
+  setPracticeAppHideResumable(false);
+  hiddenWhileActive.value = false;
+  foregroundResumeSyncPending.value = false;
+  cancelPracticeSyncWait();
 
   try {
     if (practiseId.value && !practiseResult.value?.details) {
@@ -140,6 +225,141 @@ async function exitPractise() {
   }
 }
 
+const stopMissingCurrentPracticeAndExit = async () => {
+  if (exiting.value) return;
+
+  const localPractiseId = practiseId.value;
+  exiting.value = true;
+  setPracticeAppHideResumable(false);
+  hiddenWhileActive.value = false;
+  foregroundResumeSyncPending.value = false;
+  cancelPracticeSyncWait();
+
+  try {
+    if (localPractiseId) {
+      await endPractiseAPI(localPractiseId);
+    }
+  } catch (error) {
+    console.error("Failed to stop missing current practice", error);
+  } finally {
+    closeMatchWebSocket({ reason: "legacy-practice-current-missing" });
+    practiseId.value = "";
+    serverAddr.value = "";
+    practiseResult.value = {};
+    start.value = false;
+    scores.value = [];
+    isSvip.value = false;
+    uni.showToast({
+      title: "训练已结束，请重新进入",
+      icon: "none",
+    });
+    uni.navigateBack();
+  }
+};
+
+const resumeCurrentPractice = async () => {
+  if (
+    resumeInFlight.value ||
+    !hiddenWhileActive.value ||
+    !appHideResumable.value ||
+    exiting.value
+  ) {
+    return;
+  }
+
+  resumeInFlight.value = true;
+  try {
+    let currentPractice;
+    try {
+      currentPractice = await getCurrentPractiseAPI();
+    } catch (error) {
+      if (!pageVisible.value || exiting.value) return;
+      console.error("Failed to get current practice", error);
+      await stopMissingCurrentPracticeAndExit();
+      return;
+    }
+
+    if (!pageVisible.value || !hiddenWhileActive.value || exiting.value) return;
+
+    const latestPractiseId = currentPractice?.id;
+    const latestServerAddr = String(currentPractice?.serverAddr || "").trim();
+    if (
+      currentPractice === null ||
+      !latestPractiseId ||
+      !latestServerAddr
+    ) {
+      await stopMissingCurrentPracticeAndExit();
+      return;
+    }
+
+    practiseId.value = latestPractiseId;
+    serverAddr.value = latestServerAddr;
+    foregroundResumeSyncPending.value = true;
+    if (!connectPracticeServer()) {
+      foregroundResumeSyncPending.value = false;
+      await stopMissingCurrentPracticeAndExit();
+    }
+  } finally {
+    resumeInFlight.value = false;
+  }
+};
+
+const onMatchSocketState = (event = {}) => {
+  if (event.state !== "open") return;
+  if (
+    event.matchId &&
+    String(event.matchId) !== String(practiseId.value)
+  ) {
+    return;
+  }
+  startPracticeSyncTimer();
+};
+
+const onPracticeInfoSync = async (payload = {}) => {
+  const responsePractiseId = String(
+    payload.matchId || payload.practiceInfo?.id || ""
+  );
+  if (
+    !responsePractiseId ||
+    responsePractiseId !== String(practiseId.value)
+  ) {
+    return;
+  }
+
+  const snapshot = payload.practiceInfo;
+  if (!snapshot || typeof snapshot !== "object") return;
+
+  cancelPracticeSyncWait();
+  foregroundResumeSyncPending.value = false;
+  hiddenWhileActive.value = false;
+
+  restoringSnapshot.value = true;
+  await nextTick();
+  try {
+    scores.value = Array.isArray(snapshot.details) ? snapshot.details : [];
+    isSvip.value = snapshot.sVip === true;
+
+    const status = Number(snapshot.status);
+    if (status === 1) {
+      start.value = false;
+    } else if (status === 2) {
+      start.value = true;
+    }
+  } finally {
+    restoringSnapshot.value = false;
+    await nextTick();
+  }
+
+  const timeLimit = Number(snapshot.timeLimit);
+  const duration = Number(snapshot.duration);
+  if (Number(snapshot.status) === 2 && Number.isFinite(timeLimit) && timeLimit > 0) {
+    uni.$emit(
+      "update-remain",
+      Math.max(0, timeLimit - (Number.isFinite(duration) ? duration : 0))
+    );
+  }
+};
+
 const getResultTipSrc = (result = {}) => {
   const validCount = (result.details || []).filter(
     (arrow) => arrow.x !== -30 && arrow.y !== -30
@@ -163,6 +383,25 @@ const onClickShare = debounce(async () => {
   }
 });
 
+onHide(() => {
+  pageVisible.value = false;
+  if (
+    !appHideResumable.value ||
+    exiting.value ||
+    !practiseId.value ||
+    practiseResult.value?.details
+  ) {
+    return;
+  }
+
+  hiddenWhileActive.value = true;
+});
+
+onShow(async () => {
+  pageVisible.value = true;
+  await resumeCurrentPractice();
+});
+
 onMounted(async () => {
   void audioManager.warmAll();
   // audioManager.play("第一轮");
@@ -170,15 +409,21 @@ onMounted(async () => {
     keepScreenOn: true,
   });
   uni.$on("socket-inbox", onReceiveMessage);
+  uni.$on(MATCH_WS_PRACTICE_SYNC_EVENT, onPracticeInfoSync);
+  uni.$on(MATCH_WS_STATE_EVENT, onMatchSocketState);
   uni.$on("share-image", onClickShare);
   await createPractise();
 });
 
 onBeforeUnmount(() => {
+  setPracticeAppHideResumable(false);
+  cancelPracticeSyncWait();
   uni.setKeepScreenOn({
     keepScreenOn: false,
   });
   uni.$off("socket-inbox", onReceiveMessage);
+  uni.$off(MATCH_WS_PRACTICE_SYNC_EVENT, onPracticeInfoSync);
+  uni.$off(MATCH_WS_STATE_EVENT, onMatchSocketState);
   uni.$off("share-image", onClickShare);
   audioManager.stopAll();
   closeMatchWebSocket({ reason: "practice-leave" });
@@ -215,6 +460,7 @@ onBeforeUnmount(() => {
           <BowPower />
         </view>
         <BowTarget
+          v-if="!restoringSnapshot"
           :totalRound="start ? total / 4 : 0"
           :currentRound="scores.length % 3"
           :scores="scores"
diff --git a/src/pages/practise-two.vue b/src/pages/practise-two.vue
index ef48621..735d61e 100644
--- a/src/pages/practise-two.vue
+++ b/src/pages/practise-two.vue
@@ -1,5 +1,6 @@
 <script setup>
-import { ref, onMounted, onBeforeUnmount } from "vue";
+import { ref, nextTick, onMounted, onBeforeUnmount } from "vue";
+import { onHide, onLoad, onShow } from "@dcloudio/uni-app";
 import Container from "@/components/Container.vue";
 import ShootProgress from "@/components/ShootProgress.vue";
 import BowTarget from "@/components/BowTarget.vue";
@@ -15,17 +16,23 @@ import audioManager from "@/audioManager";
 import {
   createPractiseAPI,
   endPractiseAPI,
+  getCurrentPractiseAPI,
   getPractiseAPI,
   startPractiseAPI,
 } from "@/apis";
-import { connectMatchWebSocket, closeMatchWebSocket } from "@/matchWebsocket";
+import {
+  connectMatchWebSocket,
+  closeMatchWebSocket,
+  setMatchAppHideResumable,
+  MATCH_WS_PRACTICE_SYNC_EVENT,
+  MATCH_WS_STATE_EVENT,
+} from "@/matchWebsocket";
 import { sharePractiseData } from "@/canvas";
 import { wxShare, debounce } from "@/util";
 import { MESSAGETYPESV2 } from "@/constants";
 
 import useStore from "@/store";
 import { storeToRefs } from "pinia";
-import {onLoad} from "@dcloudio/uni-app";
 const store = useStore();
 const { user, device } = storeToRefs(store);
 
@@ -35,10 +42,20 @@ const isSvip = ref(false);
 const total = 36;
 const practiseResult = ref({});
 const practiseId = ref("");
+const serverAddr = ref("");
 const showGuide = ref(false);
 const targetType = ref(1);
 const sharing = ref(false);
 const exiting = ref(false);
+const hiddenWhileActive = ref(false);
+const resumeInFlight = ref(false);
+const foregroundResumeSyncPending = ref(false);
+const pageVisible = ref(true);
+const appHideResumable = ref(false);
+const restoringSnapshot = ref(false);
+let practiceSyncTimer = null;
+let waitingPracticeSync = false;
+const PRACTICE_SYNC_TIMEOUT_MS = 5000;
 const RESULT_TIP_CDN = "https://static.shelingxingqiu.com/shootmini/static";
 
 onLoad((options) => {
@@ -47,6 +64,63 @@ onLoad((options) => {
   }
 });
 
+const setPracticeAppHideResumable = (enabled) => {
+  appHideResumable.value = enabled === true;
+  setMatchAppHideResumable(appHideResumable.value);
+};
+
+const clearPracticeSyncTimer = () => {
+  if (!practiceSyncTimer) return;
+  clearTimeout(practiceSyncTimer);
+  practiceSyncTimer = null;
+};
+
+const cancelPracticeSyncWait = () => {
+  waitingPracticeSync = false;
+  clearPracticeSyncTimer();
+};
+
+const startPracticeSyncTimer = () => {
+  clearPracticeSyncTimer();
+  waitingPracticeSync = true;
+  practiceSyncTimer = setTimeout(() => {
+    practiceSyncTimer = null;
+    if (!waitingPracticeSync) return;
+
+    waitingPracticeSync = false;
+    foregroundResumeSyncPending.value = false;
+    hiddenWhileActive.value = false;
+    closeMatchWebSocket({
+      reason: "legacy-practice-resume-timeout",
+      sendLeave: false,
+    });
+    uni.showToast({
+      title: "训练重连失败，请重试",
+      icon: "none",
+    });
+  }, PRACTICE_SYNC_TIMEOUT_MS);
+};
+
+const connectPracticeServer = () => {
+  const latestServerAddr = String(serverAddr.value || "").trim();
+  if (!practiseId.value || !latestServerAddr) return false;
+
+  cancelPracticeSyncWait();
+  closeMatchWebSocket({
+    reason: "legacy-practice-switch",
+    sendLeave: false,
+  });
+  connectMatchWebSocket({
+    serverAddr: latestServerAddr,
+    matchId: practiseId.value,
+    userId: user.value.id,
+    requestPracticeInfoOnOpen: true,
+    appHideResumable: true,
+  });
+  setPracticeAppHideResumable(true);
+  return true;
+};
+
 const createPractise = async () => {
   closeMatchWebSocket({ reason: "practice-recreate" });
   const result = await createPractiseAPI(
@@ -63,11 +137,8 @@ const createPractise = async () => {
     });
     return null;
   }
-  connectMatchWebSocket({
-    serverAddr: result.serverAddr,
-    matchId: result.id,
-    userId: user.value.id,
-  });
+  serverAddr.value = result.serverAddr;
+  connectPracticeServer();
   return result;
 };
 
@@ -93,6 +164,10 @@ const onReady = async () => {
 };
 
 const onOver = async (message) => {
+  setPracticeAppHideResumable(false);
+  hiddenWhileActive.value = false;
+  foregroundResumeSyncPending.value = false;
+  cancelPracticeSyncWait();
   practiseResult.value = Array.isArray(message?.details)
     ? message
     : await getPractiseAPI(practiseId.value);
@@ -104,6 +179,10 @@ async function onReceiveMessage(msg) {
     isSvip.value = msg.sVip === true;
     scores.value = Array.isArray(msg.details) ? msg.details : scores.value;
   } else if (msg.type === MESSAGETYPESV2.BattleEnd) {
+    setPracticeAppHideResumable(false);
+    hiddenWhileActive.value = false;
+    foregroundResumeSyncPending.value = false;
+    cancelPracticeSyncWait();
     setTimeout(() => onOver(msg), 1500);
   }
   // messages.forEach((msg) => {
@@ -125,6 +204,7 @@ async function onReceiveMessage(msg) {
 }
 
 async function onComplete() {
+  setPracticeAppHideResumable(false);
   const validArrows = (practiseResult.value.details || []).filter(
     (a) => a.x !== -30 && a.y !== -30
   );
@@ -132,6 +212,7 @@ async function onComplete() {
     uni.navigateBack();
   } else {
     practiseId.value = "";
+    serverAddr.value = "";
     practiseResult.value = {};
     start.value = false;
     scores.value = [];
@@ -143,6 +224,10 @@ async function onComplete() {
 async function exitPractise() {
   if (exiting.value) return;
   exiting.value = true;
+  setPracticeAppHideResumable(false);
+  hiddenWhileActive.value = false;
+  foregroundResumeSyncPending.value = false;
+  cancelPracticeSyncWait();
 
   try {
     if (practiseId.value && !practiseResult.value?.details) {
@@ -155,6 +240,141 @@ async function exitPractise() {
   }
 }
 
+const stopMissingCurrentPracticeAndExit = async () => {
+  if (exiting.value) return;
+
+  const localPractiseId = practiseId.value;
+  exiting.value = true;
+  setPracticeAppHideResumable(false);
+  hiddenWhileActive.value = false;
+  foregroundResumeSyncPending.value = false;
+  cancelPracticeSyncWait();
+
+  try {
+    if (localPractiseId) {
+      await endPractiseAPI(localPractiseId);
+    }
+  } catch (error) {
+    console.error("Failed to stop missing current practice", error);
+  } finally {
+    closeMatchWebSocket({ reason: "legacy-practice-current-missing" });
+    practiseId.value = "";
+    serverAddr.value = "";
+    practiseResult.value = {};
+    start.value = false;
+    scores.value = [];
+    isSvip.value = false;
+    uni.showToast({
+      title: "训练已结束，请重新进入",
+      icon: "none",
+    });
+    uni.navigateBack();
+  }
+};
+
+const resumeCurrentPractice = async () => {
+  if (
+    resumeInFlight.value ||
+    !hiddenWhileActive.value ||
+    !appHideResumable.value ||
+    exiting.value
+  ) {
+    return;
+  }
+
+  resumeInFlight.value = true;
+  try {
+    let currentPractice;
+    try {
+      currentPractice = await getCurrentPractiseAPI();
+    } catch (error) {
+      if (!pageVisible.value || exiting.value) return;
+      console.error("Failed to get current practice", error);
+      await stopMissingCurrentPracticeAndExit();
+      return;
+    }
+
+    if (!pageVisible.value || !hiddenWhileActive.value || exiting.value) return;
+
+    const latestPractiseId = currentPractice?.id;
+    const latestServerAddr = String(currentPractice?.serverAddr || "").trim();
+    if (
+      currentPractice === null ||
+      !latestPractiseId ||
+      !latestServerAddr
+    ) {
+      await stopMissingCurrentPracticeAndExit();
+      return;
+    }
+
+    practiseId.value = latestPractiseId;
+    serverAddr.value = latestServerAddr;
+    foregroundResumeSyncPending.value = true;
+    if (!connectPracticeServer()) {
+      foregroundResumeSyncPending.value = false;
+      await stopMissingCurrentPracticeAndExit();
+    }
+  } finally {
+    resumeInFlight.value = false;
+  }
+};
+
+const onMatchSocketState = (event = {}) => {
+  if (event.state !== "open") return;
+  if (
+    event.matchId &&
+    String(event.matchId) !== String(practiseId.value)
+  ) {
+    return;
+  }
+  startPracticeSyncTimer();
+};
+
+const onPracticeInfoSync = async (payload = {}) => {
+  const responsePractiseId = String(
+    payload.matchId || payload.practiceInfo?.id || ""
+  );
+  if (
+    !responsePractiseId ||
+    responsePractiseId !== String(practiseId.value)
+  ) {
+    return;
+  }
+
+  const snapshot = payload.practiceInfo;
+  if (!snapshot || typeof snapshot !== "object") return;
+
+  cancelPracticeSyncWait();
+  foregroundResumeSyncPending.value = false;
+  hiddenWhileActive.value = false;
+
+  restoringSnapshot.value = true;
+  await nextTick();
+  try {
+    scores.value = Array.isArray(snapshot.details) ? snapshot.details : [];
+    isSvip.value = snapshot.sVip === true;
+
+    const status = Number(snapshot.status);
+    if (status === 1) {
+      start.value = false;
+    } else if (status === 2) {
+      start.value = true;
+    }
+  } finally {
+    restoringSnapshot.value = false;
+    await nextTick();
+  }
+
+  const timeLimit = Number(snapshot.timeLimit);
+  const duration = Number(snapshot.duration);
+  if (Number(snapshot.status) === 2 && Number.isFinite(timeLimit) && timeLimit > 0) {
+    uni.$emit(
+      "update-remain",
+      Math.max(0, timeLimit - (Number.isFinite(duration) ? duration : 0))
+    );
+  }
+};
+
 const getResultTipSrc = (result = {}) => {
   const validCount = (result.details || []).filter(
     (arrow) => arrow.x !== -30 && arrow.y !== -30
@@ -178,21 +398,46 @@ const onClickShare = debounce(async () => {
   }
 });
 
+onHide(() => {
+  pageVisible.value = false;
+  if (
+    !appHideResumable.value ||
+    exiting.value ||
+    !practiseId.value ||
+    practiseResult.value?.details
+  ) {
+    return;
+  }
+
+  hiddenWhileActive.value = true;
+});
+
+onShow(async () => {
+  pageVisible.value = true;
+  await resumeCurrentPractice();
+});
+
 onMounted(async () => {
   void audioManager.warmAll();
   uni.setKeepScreenOn({
     keepScreenOn: true,
   });
   uni.$on("socket-inbox", onReceiveMessage);
+  uni.$on(MATCH_WS_PRACTICE_SYNC_EVENT, onPracticeInfoSync);
+  uni.$on(MATCH_WS_STATE_EVENT, onMatchSocketState);
   uni.$on("share-image", onClickShare);
   await createPractise();
 });
 
 onBeforeUnmount(() => {
+  setPracticeAppHideResumable(false);
+  cancelPracticeSyncWait();
   uni.setKeepScreenOn({
     keepScreenOn: false,
   });
   uni.$off("socket-inbox", onReceiveMessage);
+  uni.$off(MATCH_WS_PRACTICE_SYNC_EVENT, onPracticeInfoSync);
+  uni.$off(MATCH_WS_STATE_EVENT, onMatchSocketState);
   uni.$off("share-image", onClickShare);
   audioManager.stopAll();
   closeMatchWebSocket({ reason: "practice-leave" });
@@ -224,6 +469,7 @@ onBeforeUnmount(() => {
           <BowPower />
         </view>
         <BowTarget
+          v-if="!restoringSnapshot"
           :currentRound="scores.length"
           :totalRound="start ? total : 0"
           :scores="scores"
diff --git a/src/pages/team-battle/components/BowTarget.vue b/src/pages/team-battle/components/BowTarget.vue
index d22375d..924ddc2 100644
--- a/src/pages/team-battle/components/BowTarget.vue
+++ b/src/pages/team-battle/components/BowTarget.vue
@@ -12,7 +12,7 @@ import PointSwitcher from "./PointSwitcher.vue";
 import BowShotEffect from "@/components/BowShotEffect.vue";
 
 import { MESSAGETYPES, MESSAGETYPESV2 } from "@/constants";
-import { simulShootAPI } from "@/apis";
+import { simulShootAPI, laserAimAPI, laserCloseAPI } from "@/apis";
 import useStore from "@/store";
 import { storeToRefs } from "pinia";
 const store = useStore();
@@ -363,6 +363,14 @@ const simulShoot2 = async () => {
   }
 };
 
+const openAim = async () => {
+  await laserAimAPI();
+};
+
+const closeAim = async () => {
+  await laserCloseAPI();
+};
+
 const env = computed(() => {
   const accountInfo = uni.getAccountInfoSync();
   return accountInfo.miniProgram.envVersion;
@@ -542,6 +550,8 @@ onBeforeUnmount(() => {
     <view class="simul" v-if="env !== 'release'">
       <button @click="simulShoot">模拟</button>
       <button @click="simulShoot2">射箭</button>
+      <button @click="openAim">开瞄</button>
+      <button @click="closeAim">关瞄</button>
     </view>
   </view>
 </template>
diff --git a/src/pages/training/components/BowTarget.vue b/src/pages/training/components/BowTarget.vue
index a28239a..deb2ff3 100644
--- a/src/pages/training/components/BowTarget.vue
+++ b/src/pages/training/components/BowTarget.vue
@@ -13,7 +13,7 @@ import PointSwitcher from "@/components/PointSwitcher.vue";
 import TargetCanvas from "@/components/TargetCanvas.vue";
 
 import { MESSAGETYPES, MESSAGETYPESV2 } from "@/constants";
-import { simulShootAPI } from "@/apis";
+import { simulShootAPI, laserAimAPI, laserCloseAPI } from "@/apis";
 import useStore from "@/store";
 import { storeToRefs } from "pinia";
 const store = useStore();
@@ -372,6 +372,14 @@ const simulShoot2 = async () => {
   }
 };
 
+const openAim = async () => {
+  await laserAimAPI();
+};
+
+const closeAim = async () => {
+  await laserCloseAPI();
+};
+
 const env = computed(() => {
   const accountInfo = uni.getAccountInfoSync();
   return accountInfo.miniProgram.envVersion;
@@ -557,6 +565,8 @@ onBeforeUnmount(() => {
     <view class="simul" v-if="env !== 'release'">
       <button @click="simulShoot">模拟</button>
       <button @click="simulShoot2">射箭</button>
+      <button @click="openAim">开瞄</button>
+      <button @click="closeAim">关瞄</button>
     </view>
   </view>
 </template>
diff --git a/src/pages/training/practise-one.vue b/src/pages/training/practise-one.vue
index 3a51b91..3068791 100644
--- a/src/pages/training/practise-one.vue
+++ b/src/pages/training/practise-one.vue
@@ -14,6 +14,7 @@ import audioManager from "@/audioManager";
 
 import {
   createPractiseV2API,
+  getCurrentPractiseAPI,
   startPractiseAPI,
   endPractiseAPI,
   getPractiseAPI,
@@ -21,6 +22,7 @@ import {
 import {
   connectMatchWebSocket,
   closeMatchWebSocket,
+  setMatchAppHideResumable,
   MATCH_WS_PRACTICE_SYNC_EVENT,
   MATCH_WS_STATE_EVENT,
 } from "@/matchWebsocket";
@@ -76,6 +78,10 @@ const stopCompleted = ref(false);
 const stopInFlight = ref(false);
 const exiting = ref(false);
 const hiddenWhileActive = ref(false);
+const resumeInFlight = ref(false);
+const foregroundResumeSyncPending = ref(false);
+const pageVisible = ref(true);
+const appHideResumable = ref(false);
 const connectionClosed = ref(true);
 let stopPracticeTask = null;
 let practiceSyncTimer = null;
@@ -108,6 +114,12 @@ const isVip = computed(
   () => practiceInfo.value.vip === true && !isSvip.value
 );
 
+const setPracticeAppHideResumable = (enabled) => {
+  const nextValue = enabled === true;
+  appHideResumable.value = nextValue;
+  setMatchAppHideResumable(nextValue);
+};
+
 const trainingType = computed(
   () => practiceInfo.value.trainingType || trainingParams.value.type || ""
 );
@@ -561,6 +573,19 @@ const startPracticeSyncTimer = () => {
     practiceSyncTimer = null;
     if (!waitingPracticeSync) return;
     waitingPracticeSync = false;
+
+    if (foregroundResumeSyncPending.value) {
+      foregroundResumeSyncPending.value = false;
+      closePracticeConnection("training-practice-resume-timeout", {
+        sendLeave: false,
+      });
+      uni.showToast({
+        title: "训练重连失败，请重试",
+        icon: "none",
+      });
+      return;
+    }
+
     if (pageStage.value !== pageStages.LOADING) return;
 
     uni.showToast({
@@ -597,7 +622,9 @@ const onPracticeInfoSync = (payload = {}) => {
 
   const shouldShowDistance =
     waitingPracticeSync && pageStage.value === pageStages.LOADING;
+  const resumedFromForeground = foregroundResumeSyncPending.value;
   cancelPracticeSyncWait();
+  foregroundResumeSyncPending.value = false;
   invalidateShotPresentations();
 
   // 14 是完整快照，先清空旧值，避免 proto3 省略的 0 沿用上一份状态。
@@ -607,6 +634,10 @@ const onPracticeInfoSync = (payload = {}) => {
   applyVisiblePrecisionTarget(practiceInfo.value);
   scores.value = Array.isArray(snapshot.details) ? snapshot.details : [];
 
+  if (resumedFromForeground) {
+    hiddenWhileActive.value = false;
+  }
+
   if (shouldShowDistance) {
     start.value = false;
     pageStage.value = pageStages.DISTANCE;
@@ -650,18 +681,21 @@ const clearPracticeRuntimeContext = () => {
   uni.setStorageSync(trainingDifficultyStorageKey, selectionContext);
 };
 
-const closePracticeConnection = (reason) => {
+const closePracticeConnection = (reason, { sendLeave = true } = {}) => {
   cancelPracticeSyncWait();
   if (connectionClosed.value) return;
   connectionClosed.value = true;
-  closeMatchWebSocket({ reason });
+  closeMatchWebSocket({ reason, sendLeave });
 };
 
-const connectPracticeServer = () => {
+const connectPracticeServer = ({
+  resumableOnAppHide = appHideResumable.value,
+} = {}) => {
   if (!practiseId.value || !String(serverAddr.value || "").trim()) {
     return false;
   }
 
+  appHideResumable.value = resumableOnAppHide === true;
   cancelPracticeSyncWait();
   closeMatchWebSocket({ reason: "training-practice-switch" });
   preparePracticeSyncWait();
@@ -670,6 +704,7 @@ const connectPracticeServer = () => {
     matchId: practiseId.value,
     userId: user.value.id,
     requestPracticeInfoOnOpen: true,
+    appHideResumable: appHideResumable.value,
   });
   connectionClosed.value = false;
   return true;
@@ -703,6 +738,97 @@ const stopCurrentPractice = () => {
   return stopPracticeTask;
 };
 
+// 当前训练不可恢复时，始终使用页面本地的练习 ID 停止。
+const stopEndedCurrentPracticeAndExit = async () => {
+  hiddenWhileActive.value = false;
+  foregroundResumeSyncPending.value = false;
+  setPracticeAppHideResumable(false);
+  exiting.value = true;
+
+  try {
+    await stopCurrentPractice();
+  } finally {
+    closePracticeConnection("training-practice-current-missing");
+    clearPracticeRuntimeContext();
+    uni.showToast({
+      title: "训练已结束，请重新进入",
+      icon: "none",
+    });
+    uni.navigateBack();
+  }
+};
+
+// 回到前台后先获取最新比赛服地址，再通过 type 5/type 14 恢复完整快照。
+const resumeCurrentPractice = async () => {
+  if (
+    resumeInFlight.value ||
+    !hiddenWhileActive.value ||
+    !appHideResumable.value ||
+    exiting.value
+  ) {
+    return;
+  }
+
+  resumeInFlight.value = true;
+  try {
+    let currentPractice;
+    try {
+      currentPractice = await getCurrentPractiseAPI();
+    } catch (error) {
+      if (!pageVisible.value || exiting.value) return;
+      console.error("get current practice failed", error);
+      await stopEndedCurrentPracticeAndExit();
+      return;
+    }
+
+    console.log(1111111111111111111111, currentPractice)
+    if (
+      !pageVisible.value ||
+      !hiddenWhileActive.value ||
+      exiting.value
+    ) {
+      return;
+    }
+
+    const latestPracticeId = currentPractice?.id;
+    const latestServerAddr = String(
+      currentPractice?.serverAddr || ""
+    ).trim();
+    if (
+      currentPractice === null ||
+      !latestPracticeId ||
+      !latestServerAddr
+    ) {
+      await stopEndedCurrentPracticeAndExit();
+      return;
+    }
+
+    practiseId.value = latestPracticeId;
+    serverAddr.value = latestServerAddr;
+    updateTrainingContext({
+      id: latestPracticeId,
+      serverAddr: latestServerAddr,
+    });
+
+    foregroundResumeSyncPending.value = true;
+    setPracticeAppHideResumable(true);
+    if (!connectPracticeServer({ resumableOnAppHide: true })) {
+      foregroundResumeSyncPending.value = false;
+      await stopEndedCurrentPracticeAndExit();
+    }
+  } catch (error) {
+    foregroundResumeSyncPending.value = false;
+    if (!pageVisible.value || exiting.value) return;
+    console.error("training practice resume failed", error);
+    uni.showToast({
+      title: "训练重连失败，请重试",
+      icon: "none",
+    });
+  } finally {
+    resumeInFlight.value = false;
+  }
+};
+
 const createPractice = async () => {
   const trainingType = trainingParams.value.type;
   const difficultyLevel = trainingParams.value.difficulty;
@@ -740,7 +866,7 @@ const createPractice = async () => {
   stopInFlight.value = false;
   stopPracticeTask = null;
   updateTrainingContext(result);
-  connectPracticeServer();
+  connectPracticeServer({ resumableOnAppHide: true });
   return result;
 };
 
@@ -839,10 +965,12 @@ const onReady = async () => {
     shotEffectToken.value = 0;
     start.value = true;
     pageStage.value = pageStages.SHOOTING;
+    setPracticeAppHideResumable(true);
     audioManager.play("练习开始");
   } catch (error) {
     start.value = false;
     pageStage.value = pageStages.DISTANCE;
+    setPracticeAppHideResumable(true);
     throw error;
   }
 };
@@ -851,6 +979,8 @@ const onTimeLimitReached = () => {
   if (!hasTimeLimit.value || !isShootingStage.value) return;
   // 本地倒计时只负责停止射击展示，最终结算以 PRACTICE_END 为准。
   start.value = false;
+  hiddenWhileActive.value = false;
+  setPracticeAppHideResumable(false);
 };
 
 const enterPracticeResult = (result = {}) => {
@@ -859,6 +989,7 @@ const enterPracticeResult = (result = {}) => {
 
   // 正常结算不调用 stop，只清理上下文并断开比赛服连接。
   practiceEnded.value = true;
+  setPracticeAppHideResumable(false);
   invalidateShotPresentations();
   clearPracticeRuntimeContext();
   closePracticeConnection("training-practice-result");
@@ -872,6 +1003,7 @@ const onOver = async () => {
   clearHighlightTestTimer();
   pageStage.value = pageStages.LOADING;
   start.value = false;
+  setPracticeAppHideResumable(false);
 
   try {
     const apiResult = (await getPractiseAPI(practiseId.value)) || {};
@@ -885,6 +1017,7 @@ const onOver = async () => {
     }
     start.value = true;
     pageStage.value = pageStages.SHOOTING;
+    setPracticeAppHideResumable(true);
     throw error;
   }
 };
@@ -945,6 +1078,7 @@ async function onReceiveMessage(msg) {
       };
     }
     practiceEnded.value = true;
+    setPracticeAppHideResumable(false);
     invalidateShotPresentations();
     clearPracticeRuntimeContext();
     // setTimeout(onOver, 1500);
@@ -955,6 +1089,7 @@ function onComplete() {
   pageStage.value = pageStages.LOADING;
   start.value = false;
   practiceEnded.value = true;
+  setPracticeAppHideResumable(false);
   invalidateShotPresentations();
   clearPracticeRuntimeContext();
   closePracticeConnection("training-practice-complete");
@@ -964,6 +1099,7 @@ function onComplete() {
 
 async function onRetry() {
   pageStage.value = pageStages.LOADING;
+  setPracticeAppHideResumable(false);
   clearHighlightTestTimer();
   useHighlightTest.value = false;
   practiseId.value = "";
@@ -1006,6 +1142,7 @@ const updateSound = () => {
 const exitPractice = async () => {
   if (exiting.value) return;
   exiting.value = true;
+  setPracticeAppHideResumable(false);
   invalidateShotPresentations();
 
   try {
@@ -1018,36 +1155,28 @@ const exitPractice = async () => {
 };
 
 onHide(() => {
-  invalidateShotPresentations();
-  // 小程序被切到后台时尽早通知后端，作为杀进程前的尽力兜底。
+  pageVisible.value = false;
   if (
-    !exiting.value &&
-    practiseId.value &&
-    !practiceEnded.value &&
-    !stopCompleted.value
+    !appHideResumable.value ||
+    exiting.value ||
+    !practiseId.value ||
+    practiceEnded.value ||
+    stopCompleted.value
   ) {
-    hiddenWhileActive.value = true;
-    clearPracticeRuntimeContext();
-    void stopCurrentPractice();
+    return;
   }
-  closePracticeConnection("training-practice-hide");
+
+  hiddenWhileActive.value = true;
+  invalidateShotPresentations();
 });
 
 onShow(async () => {
-  if (!hiddenWhileActive.value || exiting.value) return;
-
-  hiddenWhileActive.value = false;
-  await stopCurrentPractice();
-  clearPracticeRuntimeContext();
-  exiting.value = true;
-  uni.showToast({
-    title: "训练已结束，请重新进入",
-    icon: "none",
-  });
-  uni.navigateBack();
+  pageVisible.value = true;
+  await resumeCurrentPractice();
 });
 
 onUnload(() => {
+  setPracticeAppHideResumable(false);
   invalidateShotPresentations();
   clearPracticeRuntimeContext();
   void stopCurrentPractice();
@@ -1064,7 +1193,7 @@ onMounted(() => {
   uni.$on(MATCH_WS_STATE_EVENT, onMatchSocketState);
   uni.$on("share-image", onClickShare);
   uni.$on("audioEnded", onAudioEnded);
-  if (!connectPracticeServer()) {
+  if (!connectPracticeServer({ resumableOnAppHide: true })) {
     uni.showToast({
       title: "练习连接信息异常，请重试",
       icon: "none",
@@ -1076,6 +1205,7 @@ onMounted(() => {
 });
 
 onBeforeUnmount(() => {
+  setPracticeAppHideResumable(false);
   invalidateShotPresentations();
   clearPracticeRuntimeContext();
   void stopCurrentPractice();
diff --git a/src/websocket.js b/src/websocket.js
index 57ff90e..73e7132 100644
--- a/src/websocket.js
+++ b/src/websocket.js
@@ -24,7 +24,7 @@ function createWebSocket(token, onMessage) {
 
     switch (envVersion) {
       case "develop": // 开发版
-        // url = "ws://192.168.1.5:8000/socket";
+        // url = "ws://192.168.1.2:8000/socket";
         url = "wss://apitest.shelingxingqiu.com/socket";
         break;
       case "trial": // 体验版