diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/config/MonitorServiceConfig.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/config/MonitorServiceConfig.kt
new file mode 100644
index 0000000..9bc3047
--- /dev/null
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/config/MonitorServiceConfig.kt
@@ -0,0 +1,23 @@
+package com.wrbug.polymarketbot.config
+
+import com.wrbug.polymarketbot.service.common.WebSocketSubscriptionService
+import com.wrbug.polymarketbot.service.cryptotail.CryptoTailMonitorService
+import jakarta.annotation.PostConstruct
+import org.springframework.context.annotation.Configuration
+
+/**
+ * 加密价差策略监控服务配置
+ * 处理 WebSocketSubscriptionService 和 CryptoTailMonitorService 之间的循环依赖
+ */
+@Configuration
+class MonitorServiceConfig(
+    private val webSocketSubscriptionService: WebSocketSubscriptionService,
+    private val cryptoTailMonitorService: CryptoTailMonitorService
+) {
+    
+    @PostConstruct
+    fun init() {
+        // 在所有 Bean 初始化后设置引用
+        webSocketSubscriptionService.setCryptoTailMonitorService(cryptoTailMonitorService)
+    }
+}
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/controller/cryptotail/CryptoTailStrategyController.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/controller/cryptotail/CryptoTailStrategyController.kt
index 25217b9..40c30e9 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/controller/cryptotail/CryptoTailStrategyController.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/controller/cryptotail/CryptoTailStrategyController.kt
@@ -11,9 +11,12 @@ import com.wrbug.polymarketbot.dto.CryptoTailStrategyTriggerListResponse
 import com.wrbug.polymarketbot.dto.CryptoTailStrategyUpdateRequest
 import com.wrbug.polymarketbot.dto.CryptoTailMarketOptionDto
 import com.wrbug.polymarketbot.dto.CryptoTailAutoMinSpreadResponse
+import com.wrbug.polymarketbot.dto.CryptoTailMonitorInitRequest
+import com.wrbug.polymarketbot.dto.CryptoTailMonitorInitResponse
 import com.wrbug.polymarketbot.enums.ErrorCode
 import com.wrbug.polymarketbot.service.binance.BinanceKlineAutoSpreadService
 import com.wrbug.polymarketbot.service.cryptotail.CryptoTailStrategyService
+import com.wrbug.polymarketbot.service.cryptotail.CryptoTailMonitorService
 import org.slf4j.LoggerFactory
 import org.springframework.context.MessageSource
 import org.springframework.http.ResponseEntity
@@ -26,6 +29,7 @@ import org.springframework.web.bind.annotation.RestController
 @RequestMapping("/api/crypto-tail-strategy")
 class CryptoTailStrategyController(
     private val cryptoTailStrategyService: CryptoTailStrategyService,
+    private val cryptoTailMonitorService: CryptoTailMonitorService,
     private val binanceKlineAutoSpreadService: BinanceKlineAutoSpreadService,
     private val messageSource: MessageSource
 ) {
@@ -39,12 +43,12 @@ class CryptoTailStrategyController(
             result.fold(
                 onSuccess = { ResponseEntity.ok(ApiResponse.success(it)) },
                 onFailure = { e ->
-                    logger.error("查询尾盘策略列表失败: ${e.message}", e)
+                    logger.error("查询加密价差策略列表失败: ${e.message}", e)
                     ResponseEntity.ok(ApiResponse.error(ErrorCode.SERVER_CRYPTO_TAIL_STRATEGY_LIST_FETCH_FAILED, e.message, messageSource))
                 }
             )
         } catch (e: Exception) {
-            logger.error("查询尾盘策略列表异常: ${e.message}", e)
+            logger.error("查询加密价差策略列表异常: ${e.message}", e)
             ResponseEntity.ok(ApiResponse.error(ErrorCode.SERVER_CRYPTO_TAIL_STRATEGY_LIST_FETCH_FAILED, e.message, messageSource))
         }
     }
@@ -56,7 +60,7 @@ class CryptoTailStrategyController(
             result.fold(
                 onSuccess = { ResponseEntity.ok(ApiResponse.success(it)) },
                 onFailure = { e ->
-                    logger.error("创建尾盘策略失败: ${e.message}", e)
+                    logger.error("创建加密价差策略失败: ${e.message}", e)
                     val code = when (e.message) {
                         ErrorCode.CRYPTO_TAIL_STRATEGY_WINDOW_INVALID.messageKey -> ErrorCode.CRYPTO_TAIL_STRATEGY_WINDOW_INVALID
                         ErrorCode.CRYPTO_TAIL_STRATEGY_WINDOW_EXCEED.messageKey -> ErrorCode.CRYPTO_TAIL_STRATEGY_WINDOW_EXCEED
@@ -68,7 +72,7 @@ class CryptoTailStrategyController(
                 }
             )
         } catch (e: Exception) {
-            logger.error("创建尾盘策略异常: ${e.message}", e)
+            logger.error("创建加密价差策略异常: ${e.message}", e)
             ResponseEntity.ok(ApiResponse.error(ErrorCode.SERVER_CRYPTO_TAIL_STRATEGY_CREATE_FAILED, e.message, messageSource))
         }
     }
@@ -83,7 +87,7 @@ class CryptoTailStrategyController(
             result.fold(
                 onSuccess = { ResponseEntity.ok(ApiResponse.success(it)) },
                 onFailure = { e ->
-                    logger.error("更新尾盘策略失败: ${e.message}", e)
+                    logger.error("更新加密价差策略失败: ${e.message}", e)
                     val code = when (e.message) {
                         ErrorCode.CRYPTO_TAIL_STRATEGY_NOT_FOUND.messageKey -> ErrorCode.CRYPTO_TAIL_STRATEGY_NOT_FOUND
                         ErrorCode.CRYPTO_TAIL_STRATEGY_WINDOW_INVALID.messageKey -> ErrorCode.CRYPTO_TAIL_STRATEGY_WINDOW_INVALID
@@ -95,7 +99,7 @@ class CryptoTailStrategyController(
                 }
             )
         } catch (e: Exception) {
-            logger.error("更新尾盘策略异常: ${e.message}", e)
+            logger.error("更新加密价差策略异常: ${e.message}", e)
             ResponseEntity.ok(ApiResponse.error(ErrorCode.SERVER_CRYPTO_TAIL_STRATEGY_UPDATE_FAILED, e.message, messageSource))
         }
     }
@@ -111,12 +115,12 @@ class CryptoTailStrategyController(
             result.fold(
                 onSuccess = { ResponseEntity.ok(ApiResponse.success(Unit)) },
                 onFailure = { e ->
-                    logger.error("删除尾盘策略失败: ${e.message}", e)
+                    logger.error("删除加密价差策略失败: ${e.message}", e)
                     ResponseEntity.ok(ApiResponse.error(ErrorCode.SERVER_CRYPTO_TAIL_STRATEGY_DELETE_FAILED, e.message, messageSource))
                 }
             )
         } catch (e: Exception) {
-            logger.error("删除尾盘策略异常: ${e.message}", e)
+            logger.error("删除加密价差策略异常: ${e.message}", e)
             ResponseEntity.ok(ApiResponse.error(ErrorCode.SERVER_CRYPTO_TAIL_STRATEGY_DELETE_FAILED, e.message, messageSource))
         }
     }
@@ -173,7 +177,7 @@ class CryptoTailStrategyController(
                 return ResponseEntity.ok(ApiResponse.error(ErrorCode.PARAM_ERROR, messageSource = messageSource))
             }
             val periodStartUnix = (request["periodStartUnix"] as? Number)?.toLong()
-                ?: (System.currentTimeMillis() / 1000 / intervalSeconds) * intervalSeconds
+                ?: ((System.currentTimeMillis() / 1000 / intervalSeconds) * intervalSeconds)
             // 默认使用 BTC 市场（向后兼容）
             val marketSlugPrefix = (request["marketSlugPrefix"] as? String) ?: "btc-updown"
             val pair = binanceKlineAutoSpreadService.computeAndCache(marketSlugPrefix, intervalSeconds, periodStartUnix)
@@ -188,4 +192,28 @@ class CryptoTailStrategyController(
             ResponseEntity.ok(ApiResponse.error(ErrorCode.SERVER_ERROR, e.message, messageSource))
         }
     }
+
+    /**
+     * 初始化加密价差策略监控
+     * 返回策略信息、开盘价、tokenIds等初始化数据
+     */
+    @PostMapping("/monitor/init")
+    fun initMonitor(@RequestBody request: CryptoTailMonitorInitRequest): ResponseEntity<ApiResponse<CryptoTailMonitorInitResponse>> {
+        return try {
+            if (request.strategyId <= 0) {
+                return ResponseEntity.ok(ApiResponse.error(ErrorCode.CRYPTO_TAIL_STRATEGY_NOT_FOUND, messageSource = messageSource))
+            }
+            val result = cryptoTailMonitorService.initMonitor(request)
+            result.fold(
+                onSuccess = { ResponseEntity.ok(ApiResponse.success(it)) },
+                onFailure = { e ->
+                    logger.error("初始化加密价差策略监控失败: ${e.message}", e)
+                    ResponseEntity.ok(ApiResponse.error(ErrorCode.SERVER_ERROR, e.message, messageSource))
+                }
+            )
+        } catch (e: Exception) {
+            logger.error("初始化加密价差策略监控异常: ${e.message}", e)
+            ResponseEntity.ok(ApiResponse.error(ErrorCode.SERVER_ERROR, e.message, messageSource))
+        }
+    }
 }
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/CryptoTailMonitorDto.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/CryptoTailMonitorDto.kt
new file mode 100644
index 0000000..3761a2e
--- /dev/null
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/CryptoTailMonitorDto.kt
@@ -0,0 +1,105 @@
+package com.wrbug.polymarketbot.dto
+
+/**
+ * 加密价差策略监控初始化请求
+ */
+data class CryptoTailMonitorInitRequest(
+    /** 策略ID */
+    val strategyId: Long = 0L
+)
+
+/**
+ * 加密价差策略监控初始化响应
+ */
+data class CryptoTailMonitorInitResponse(
+    /** 策略ID */
+    val strategyId: Long = 0L,
+    /** 策略名称 */
+    val name: String = "",
+    /** 账户ID */
+    val accountId: Long = 0L,
+    /** 账户名称 */
+    val accountName: String = "",
+    /** 市场 slug 前缀 */
+    val marketSlugPrefix: String = "",
+    /** 市场标题 */
+    val marketTitle: String = "",
+    /** 周期秒数 (300=5m, 900=15m) */
+    val intervalSeconds: Int = 300,
+    /** 当前周期开始时间 (Unix 秒) */
+    val periodStartUnix: Long = 0L,
+    /** 时间窗口开始秒数 */
+    val windowStartSeconds: Int = 0,
+    /** 时间窗口结束秒数 */
+    val windowEndSeconds: Int = 0,
+    /** 最低价格 */
+    val minPrice: String = "0",
+    /** 最高价格 */
+    val maxPrice: String = "1",
+    /** 最小价差模式: NONE, FIXED, AUTO */
+    val minSpreadMode: String = "NONE",
+    /** 价差方向: MIN（显示周期内最小价差）, MAX（显示周期内最大价差） */
+    val spreadDirection: String = "MIN",
+    /** 最小价差数值 (FIXED 时有值) */
+    val minSpreadValue: String? = null,
+    /** 自动计算的最小价差 (Up方向) */
+    val autoMinSpreadUp: String? = null,
+    /** 自动计算的最小价差 (Down方向) */
+    val autoMinSpreadDown: String? = null,
+    /** BTC 开盘价 USDC（来自币安 K 线 open） */
+    val openPriceBtc: String? = null,
+    /** Up tokenId */
+    val tokenIdUp: String? = null,
+    /** Down tokenId */
+    val tokenIdDown: String? = null,
+    /** 当前时间 (毫秒时间戳) */
+    val currentTimestamp: Long = System.currentTimeMillis(),
+    /** 是否启用 */
+    val enabled: Boolean = true
+)
+
+/**
+ * 加密价差策略监控实时推送数据
+ */
+data class CryptoTailMonitorPushData(
+    /** 策略ID */
+    val strategyId: Long = 0L,
+    /** 推送时间 (毫秒时间戳) */
+    val timestamp: Long = System.currentTimeMillis(),
+    /** 当前周期开始时间 (Unix 秒) */
+    val periodStartUnix: Long = 0L,
+    /** 当前周期市场标题（周期切换时更新） */
+    val marketTitle: String = "",
+    /** 当前价格 (Up方向，来自订单簿) */
+    val currentPriceUp: String? = null,
+    /** 当前价格 (Down方向，来自订单簿) */
+    val currentPriceDown: String? = null,
+    /** 当前价差 (Up方向: 1 - currentPriceUp) */
+    val spreadUp: String? = null,
+    /** 当前价差 (Down方向: currentPriceUp) */
+    val spreadDown: String? = null,
+    /** 最小价差线 (Up方向) */
+    val minSpreadLineUp: String? = null,
+    /** 最小价差线 (Down方向，USDC 价差) */
+    val minSpreadLineDown: String? = null,
+    /** BTC 开盘价 USDC（币安 K 线 open） */
+    val openPriceBtc: String? = null,
+    /** BTC 最新价 USDC（币安 K 线 close，当前周期实时） */
+    val currentPriceBtc: String? = null,
+    /** BTC 价差 USDC（currentPriceBtc - openPriceBtc） */
+    val spreadBtc: String? = null,
+    /** 周期剩余秒数 */
+    val remainingSeconds: Int = 0,
+    /** 是否在时间窗口内 */
+    val inTimeWindow: Boolean = false,
+    /** 是否在价格区间内 (Up方向) */
+    val inPriceRangeUp: Boolean = false,
+    /** 是否在价格区间内 (Down方向) */
+    val inPriceRangeDown: Boolean = false,
+    /** 是否已触发 */
+    val triggered: Boolean = false,
+    /** 触发方向: UP, DOWN, null */
+    val triggerDirection: String? = null,
+    /** 周期是否已结束 */
+    val periodEnded: Boolean = false
+)
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/CryptoTailStrategyDto.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/CryptoTailStrategyDto.kt
index c1e6bf4..1ed4c24 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/CryptoTailStrategyDto.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/dto/CryptoTailStrategyDto.kt
@@ -1,7 +1,7 @@
 package com.wrbug.polymarketbot.dto
 
 /**
- * 尾盘策略创建请求
+ * 加密价差策略创建请求
  * 金额与价格使用 String，后端转为 BigDecimal
  */
 data class CryptoTailStrategyCreateRequest(
@@ -25,7 +25,7 @@ data class CryptoTailStrategyCreateRequest(
 )
 
 /**
- * 尾盘策略更新请求
+ * 加密价差策略更新请求
  */
 data class CryptoTailStrategyUpdateRequest(
     val strategyId: Long = 0L,
@@ -46,7 +46,7 @@ data class CryptoTailStrategyUpdateRequest(
 )
 
 /**
- * 尾盘策略列表请求
+ * 加密价差策略列表请求
  */
 data class CryptoTailStrategyListRequest(
     val accountId: Long? = null,
@@ -54,7 +54,7 @@ data class CryptoTailStrategyListRequest(
 )
 
 /**
- * 尾盘策略 DTO（列表与详情）
+ * 加密价差策略 DTO（列表与详情）
  */
 data class CryptoTailStrategyDto(
     val id: Long = 0L,
@@ -90,14 +90,14 @@ data class CryptoTailStrategyDto(
 )
 
 /**
- * 尾盘策略列表响应
+ * 加密价差策略列表响应
  */
 data class CryptoTailStrategyListResponse(
     val list: List<CryptoTailStrategyDto> = emptyList()
 )
 
 /**
- * 尾盘策略删除请求
+ * 加密价差策略删除请求
  */
 data class CryptoTailStrategyDeleteRequest(
     val strategyId: Long = 0L
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/CryptoTailStrategy.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/CryptoTailStrategy.kt
index 6a200a0..780987d 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/CryptoTailStrategy.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/CryptoTailStrategy.kt
@@ -8,7 +8,7 @@ import jakarta.persistence.*
 import java.math.BigDecimal
 
 /**
- * 加密市场尾盘策略实体
+ * 加密价差策略实体
  * 5/15 分钟 Up or Down 市场，在周期内时间窗口、价格进入区间时市价买入
  */
 @Entity
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/CryptoTailStrategyTrigger.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/CryptoTailStrategyTrigger.kt
index 9444770..e8020df 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/CryptoTailStrategyTrigger.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/entity/CryptoTailStrategyTrigger.kt
@@ -5,7 +5,7 @@ import java.math.BigDecimal
 import com.wrbug.polymarketbot.util.toSafeBigDecimal
 
 /**
- * 尾盘策略触发记录
+ * 加密价差策略触发记录
  */
 @Entity
 @Table(name = "crypto_tail_strategy_trigger")
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/enums/ErrorCode.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/enums/ErrorCode.kt
index 5d1c80f..b4f6dcd 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/enums/ErrorCode.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/enums/ErrorCode.kt
@@ -158,8 +158,8 @@ enum class ErrorCode(
     ACCOUNT_BALANCE_FETCH_FAILED(4707, "查询账户余额失败", "error.account_balance_fetch_failed"),
     ACCOUNT_POSITIONS_FETCH_FAILED(4708, "查询仓位列表失败", "error.account_positions_fetch_failed"),
     
-    // 尾盘策略 (4710-4729)
-    CRYPTO_TAIL_STRATEGY_NOT_FOUND(4710, "尾盘策略不存在", "error.crypto_tail_strategy_not_found"),
+    // 加密价差策略 (4710-4729)
+    CRYPTO_TAIL_STRATEGY_NOT_FOUND(4710, "加密价差策略不存在", "error.crypto_tail_strategy_not_found"),
     CRYPTO_TAIL_STRATEGY_WINDOW_INVALID(4711, "时间区间开始不能大于结束", "error.crypto_tail_strategy_window_invalid"),
     CRYPTO_TAIL_STRATEGY_WINDOW_EXCEED(4712, "时间区间不能超过周期长度", "error.crypto_tail_strategy_window_exceed"),
     CRYPTO_TAIL_STRATEGY_INTERVAL_INVALID(4713, "周期仅支持 300 或 900 秒", "error.crypto_tail_strategy_interval_invalid"),
@@ -259,11 +259,11 @@ enum class ErrorCode(
     SERVER_BACKTEST_RETRY_FAILED(5612, "重试回测任务失败", "error.server.backtest_retry_failed"),
     SERVER_BACKTEST_RERUN_FAILED(5613, "按配置重新测试失败", "error.server.backtest_rerun_failed"),
 
-    // 尾盘策略服务 (5620-5629)
-    SERVER_CRYPTO_TAIL_STRATEGY_CREATE_FAILED(5620, "创建尾盘策略失败", "error.server.crypto_tail_strategy_create_failed"),
-    SERVER_CRYPTO_TAIL_STRATEGY_UPDATE_FAILED(5621, "更新尾盘策略失败", "error.server.crypto_tail_strategy_update_failed"),
-    SERVER_CRYPTO_TAIL_STRATEGY_DELETE_FAILED(5622, "删除尾盘策略失败", "error.server.crypto_tail_strategy_delete_failed"),
-    SERVER_CRYPTO_TAIL_STRATEGY_LIST_FETCH_FAILED(5623, "查询尾盘策略列表失败", "error.server.crypto_tail_strategy_list_fetch_failed"),
+    // 加密价差策略服务 (5620-5629)
+    SERVER_CRYPTO_TAIL_STRATEGY_CREATE_FAILED(5620, "创建加密价差策略失败", "error.server.crypto_tail_strategy_create_failed"),
+    SERVER_CRYPTO_TAIL_STRATEGY_UPDATE_FAILED(5621, "更新加密价差策略失败", "error.server.crypto_tail_strategy_update_failed"),
+    SERVER_CRYPTO_TAIL_STRATEGY_DELETE_FAILED(5622, "删除加密价差策略失败", "error.server.crypto_tail_strategy_delete_failed"),
+    SERVER_CRYPTO_TAIL_STRATEGY_LIST_FETCH_FAILED(5623, "查询加密价差策略列表失败", "error.server.crypto_tail_strategy_list_fetch_failed"),
     SERVER_CRYPTO_TAIL_STRATEGY_TRIGGERS_FETCH_FAILED(5624, "查询触发记录失败", "error.server.crypto_tail_strategy_triggers_fetch_failed");
     
     companion object {
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/event/CryptoTailStrategyChangedEvent.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/event/CryptoTailStrategyChangedEvent.kt
index 9496905..1e8f3f7 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/event/CryptoTailStrategyChangedEvent.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/event/CryptoTailStrategyChangedEvent.kt
@@ -3,6 +3,6 @@ package com.wrbug.polymarketbot.event
 import org.springframework.context.ApplicationEvent
 
 /**
- * 尾盘策略创建/更新/启用状态变更后发布，用于立即触发一轮执行检查。
+ * 加密价差策略创建/更新/启用状态变更后发布，用于立即触发一轮执行检查。
  */
 class CryptoTailStrategyChangedEvent(source: Any) : ApplicationEvent(source)
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/repository/CryptoTailStrategyTriggerRepository.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/repository/CryptoTailStrategyTriggerRepository.kt
index 8419eb6..b248ff7 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/repository/CryptoTailStrategyTriggerRepository.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/repository/CryptoTailStrategyTriggerRepository.kt
@@ -23,7 +23,7 @@ interface CryptoTailStrategyTriggerRepository : JpaRepository<CryptoTailStrategy
     /** 轮询结算：仅处理下单成功的订单（status=success 且 orderId 非空）、且未结算的触发记录 */
     fun findByStatusAndResolvedAndOrderIdIsNotNullOrderByCreatedAtAsc(status: String, resolved: Boolean): List<CryptoTailStrategyTrigger>
 
-    /** 根据订单 ID 查询尾盘触发记录 */
+    /** 根据订单 ID 查询加密价差策略触发记录 */
     fun findByOrderId(orderId: String): CryptoTailStrategyTrigger?
 
     /** 轮询发 TG：status=success、orderId 非空、未发过通知，按创建时间正序 */
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/accounts/AccountService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/accounts/AccountService.kt
index f2d3219..d0c8cb5 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/accounts/AccountService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/accounts/AccountService.kt
@@ -125,8 +125,8 @@ class AccountService(
 
             // 7. 加密敏感信息
             val encryptedPrivateKey = cryptoUtils.encrypt(request.privateKey)
-            val encryptedApiSecret = apiKeyCreds.secret?.let { cryptoUtils.encrypt(it) }
-            val encryptedApiPassphrase = apiKeyCreds.passphrase?.let { cryptoUtils.encrypt(it) }
+            val encryptedApiSecret = apiKeyCreds.secret.let { cryptoUtils.encrypt(it) }
+            val encryptedApiPassphrase = apiKeyCreds.passphrase.let { cryptoUtils.encrypt(it) }
 
             // 8. 生成账户名称（如果未提供，使用 SAFE/MAGIC-代理地址后4位）
             val accountName = if (request.accountName.isNullOrBlank()) {
@@ -518,8 +518,8 @@ class AccountService(
                     }
                     val creds = result.getOrNull()
                         ?: return Result.failure(IllegalStateException("API Key 返回为空"))
-                    val encryptedSecret = creds.secret?.let { cryptoUtils.encrypt(it) }
-                    val encryptedPassphrase = creds.passphrase?.let { cryptoUtils.encrypt(it) }
+                    val encryptedSecret = creds.secret.let { cryptoUtils.encrypt(it) }
+                    val encryptedPassphrase = creds.passphrase.let { cryptoUtils.encrypt(it) }
                     val updated = account.copy(
                         apiKey = creds.apiKey,
                         apiSecret = encryptedSecret,
@@ -1128,7 +1128,7 @@ class AccountService(
 
             // 3. 验证仓位是否存在并获取原始数量
             val positionsResult = getAllPositions()
-            val (position, originalQuantity) = positionsResult.fold(
+            val (_, originalQuantity) = positionsResult.fold(
                 onSuccess = { positionListResponse ->
                     val position = positionListResponse.currentPositions.find {
                         it.accountId == request.accountId &&
@@ -1161,7 +1161,7 @@ class AccountService(
                 onFailure = { e ->
                     return Result.failure(Exception("查询仓位失败: ${e.message}"))
                 }
-            ) ?: return Result.failure(IllegalArgumentException("仓位不存在"))
+            )
 
             // 4. 计算实际卖出数量
             val sellQuantity = if (percentDecimal != null) {
@@ -1280,7 +1280,7 @@ class AccountService(
 
             val newOrderRequest = com.wrbug.polymarketbot.api.NewOrderRequest(
                 order = signedOrder,
-                owner = account.apiKey!!,  // API Key
+                owner = account.apiKey,  // API Key
                 orderType = orderType,
                 deferExec = false
             )
@@ -1300,7 +1300,7 @@ class AccountService(
             }
 
             val clobApi = retrofitFactory.createClobApi(
-                account.apiKey!!,
+                account.apiKey,
                 apiSecret,
                 apiPassphrase,
                 account.walletAddress
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/accounts/PositionCheckService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/accounts/PositionCheckService.kt
index 6217462..d64fd39 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/accounts/PositionCheckService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/accounts/PositionCheckService.kt
@@ -396,7 +396,7 @@ class PositionCheckService(
             val positionsByAccount = redeemablePositions.groupBy { it.accountId }
             
             for ((accountId, positions) in positionsByAccount) {
-                // 查找该账户下所有启用的跟单配置（仅用于赎回成功后更新跟单订单状态；无跟单配置的账户如尾盘策略账户也会执行赎回）
+                // 查找该账户下所有启用的跟单配置（仅用于赎回成功后更新跟单订单状态；无跟单配置的账户如加密价差策略账户也会执行赎回）
                 val copyTradings = copyTradingRepository.findByAccountId(accountId)
                     .filter { it.enabled }
                 
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/binance/BinanceKlineAutoSpreadService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/binance/BinanceKlineAutoSpreadService.kt
index dd80681..b24e9ac 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/binance/BinanceKlineAutoSpreadService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/binance/BinanceKlineAutoSpreadService.kt
@@ -94,7 +94,7 @@ class BinanceKlineAutoSpreadService(
         val baseDown = averageAfterIqr(spreadsDown).setScale(8, RoundingMode.HALF_UP)
         cache[cacheKey(marketSlugPrefix, intervalSeconds, periodStartUnix)] = baseUp to baseDown
         logger.info(
-            "尾盘自动价差已计算并缓存(100%基准): market=$marketSlugPrefix symbol=$symbol interval=${intervalSeconds}s periodStartUnix=$periodStartUnix | " +
+            "加密价差策略自动价差已计算并缓存(100%基准): market=$marketSlugPrefix symbol=$symbol interval=${intervalSeconds}s periodStartUnix=$periodStartUnix | " +
                 "Up方向: 样本数=${spreadsUp.size}, baseSpreadUp=${baseUp.toPlainString()} | " +
                 "Down方向: 样本数=${spreadsDown.size}, baseSpreadDown=${baseDown.toPlainString()}"
         )
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/binance/BinanceKlineService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/binance/BinanceKlineService.kt
index a469948..c47fe53 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/binance/BinanceKlineService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/binance/BinanceKlineService.kt
@@ -19,7 +19,7 @@ import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.atomic.AtomicReference
 
 /**
- * 币安 K 线 WebSocket：按需订阅尾盘策略使用的币种 5m/15m，维护当前周期 (open, close)，供价差校验使用。
+ * 币安 K 线 WebSocket：按需订阅加密价差策略使用的币种 5m/15m，维护当前周期 (open, close)，供价差校验使用。
  * 仅当存在启用策略且策略使用到某市场时才订阅对应币种，无策略时不建立连接。
  */
 @Service
@@ -29,7 +29,9 @@ class BinanceKlineService {
     private val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())
 
     private val wsBase = "wss://stream.binance.com:9443"
-    private val client = createClient().build()
+    private val client by lazy {
+        createClient().build()
+    }
 
     /** (marketSlugPrefix, intervalSeconds, periodStartUnix) -> (open, close) */
     private val openCloseByPeriod = ConcurrentHashMap<String, Pair<BigDecimal, BigDecimal>>()
@@ -44,7 +46,7 @@ class BinanceKlineService {
     
     /** 已连接的 WebSocket: wsKey (symbol-interval) -> WebSocket */
     private val connectedWebSockets = ConcurrentHashMap<String, WebSocket>()
-    /** 当前需要订阅的完整市场集合（如 btc-updown-5m、btc-updown-15m），由尾盘策略刷新时更新 */
+    /** 当前需要订阅的完整市场集合（如 btc-updown-5m、btc-updown-15m），由加密价差策略刷新时更新 */
     private val requiredMarketPrefixes = AtomicReference<Set<String>>(emptySet())
     private val subscriptionLock = Any()
     private var reconnectJob: Job? = null
@@ -82,6 +84,7 @@ class BinanceKlineService {
      */
     fun updateSubscriptions(marketPrefixes: Set<String>) {
         val normalized = marketPrefixes.map { it.lowercase() }.toSet()
+
         val parsed = normalized.mapNotNull { full ->
             parseMarketSlug(full)?.let { (base, interval) ->
                 getSymbol(base)?.let { symbol -> Triple(full, symbol, interval) }
@@ -123,14 +126,14 @@ class BinanceKlineService {
             else -> 300
         }
         val request = Request.Builder().url(url).build()
-        val ws = client.newWebSocket(request, object : WebSocketListener() {
+        client.newWebSocket(request, object : WebSocketListener() {
             override fun onOpen(webSocket: WebSocket, response: okhttp3.Response) {
                 connectedWebSockets[wsKey] = webSocket
                 logger.info("币安 K 线 WS 已连接: $streamName")
             }
 
             override fun onMessage(webSocket: WebSocket, text: String) {
-                parseKlineMessage(text, intervalSeconds)?.let { (tMs, o, c) ->
+                parseKlineMessage(text)?.let { (tMs, o, c) ->
                     onKline(marketPrefix, intervalSeconds, tMs, o, c)
                 }
             }
@@ -152,7 +155,7 @@ class BinanceKlineService {
         })
     }
 
-    private fun parseKlineMessage(text: String, intervalSeconds: Int): Triple<Long, BigDecimal, BigDecimal>? {
+    private fun parseKlineMessage(text: String): Triple<Long, BigDecimal, BigDecimal>? {
         return try {
             val json = com.google.gson.JsonParser.parseString(text).asJsonObject
             if (json.get("e")?.asString != "kline") return null
@@ -176,6 +179,8 @@ class BinanceKlineService {
             connectedWebSockets.values.forEach { it.close(1000, "reconnect") }
             connectedWebSockets.clear()
             logger.info("币安 K 线 WS 尝试重连")
+            // 清空 requiredMarketPrefixes，否则 updateSubscriptions(current) 内会因 normalized == requiredMarketPrefixes.get() 直接 return，不会重新 connectStream
+            requiredMarketPrefixes.set(emptySet())
             updateSubscriptions(current)
         }
     }
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/common/WebSocketSubscriptionService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/common/WebSocketSubscriptionService.kt
index 187a91b..69a6180 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/common/WebSocketSubscriptionService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/common/WebSocketSubscriptionService.kt
@@ -1,11 +1,13 @@
 package com.wrbug.polymarketbot.service.common
 
+import com.wrbug.polymarketbot.dto.CryptoTailMonitorPushData
 import com.wrbug.polymarketbot.dto.OrderPushMessage
 import com.wrbug.polymarketbot.dto.PositionPushMessage
 import com.wrbug.polymarketbot.dto.WebSocketMessage as WsMessage
 import com.wrbug.polymarketbot.dto.WebSocketMessageType
 import com.wrbug.polymarketbot.service.accounts.PositionPushService
 import com.wrbug.polymarketbot.service.copytrading.orders.OrderPushService
+import com.wrbug.polymarketbot.service.cryptotail.CryptoTailMonitorService
 import kotlinx.coroutines.*
 import org.slf4j.LoggerFactory
 import org.springframework.stereotype.Service
@@ -38,28 +40,47 @@ class WebSocketSubscriptionService(
     // 存储 order 频道的订阅回调：sessionId -> callback（用于取消订阅）
     private val orderChannelCallbacks = ConcurrentHashMap<String, (OrderPushMessage) -> Unit>()
     
+    // 存储加密价差策略监控频道的订阅回调：sessionId -> (strategyId -> callback)
+    private val monitorChannelCallbacks = ConcurrentHashMap<String, MutableMap<Long, (CryptoTailMonitorPushData) -> Unit>>()
+    
+    // 加密价差策略监控服务（延迟注入，避免循环依赖）
+    private var cryptoTailMonitorService: CryptoTailMonitorService? = null
+    
+    /**
+     * 设置加密价差策略监控服务（由 Spring 在初始化后调用）
+     */
+    fun setCryptoTailMonitorService(service: CryptoTailMonitorService) {
+        cryptoTailMonitorService = service
+    }
+    
     /**
      * 注册会话
      */
     fun registerSession(sessionId: String, callback: (WsMessage) -> Unit) {
         sessionCallbacks[sessionId] = callback
         sessionSubscriptions[sessionId] = mutableSetOf()
+        monitorChannelCallbacks[sessionId] = mutableMapOf()
     }
     
     /**
      * 注销会话
      */
     fun unregisterSession(sessionId: String) {
-        
         // 取消所有订阅
         val channels = sessionSubscriptions.remove(sessionId) ?: emptySet()
         channels.forEach { channel ->
             unsubscribe(sessionId, channel)
         }
-        
+
         // 清理 order 频道的回调
         orderChannelCallbacks.remove(sessionId)
-        
+
+        // 清理加密价差策略监控频道的回调
+        val monitorCallbacks = monitorChannelCallbacks.remove(sessionId)
+        monitorCallbacks?.keys?.forEach { strategyId ->
+            cryptoTailMonitorService?.unsubscribe(sessionId, strategyId)
+        }
+
         sessionCallbacks.remove(sessionId)
     }
     
@@ -83,8 +104,8 @@ class WebSocketSubscriptionService(
         sendSubscribeAck(sessionId, channel, true)
         
         // 根据频道类型启动推送服务
-        when (channel) {
-            "position" -> {
+        when {
+            channel == "position" -> {
                 positionPushService.subscribe(sessionId) { message ->
                     pushData(sessionId, channel, message)
                 }
@@ -97,7 +118,7 @@ class WebSocketSubscriptionService(
                     }
                 }
             }
-            "order" -> {
+            channel == "order" -> {
                 // 订单推送：自动订阅所有启用的账户
                 val callback: (OrderPushMessage) -> Unit = { message ->
                     pushData(sessionId, channel, message)
@@ -105,6 +126,20 @@ class WebSocketSubscriptionService(
                 orderChannelCallbacks[sessionId] = callback
                 orderPushService.subscribeAllEnabled(callback)
             }
+            channel.startsWith("crypto_tail_monitor_") -> {
+                // 加密价差策略监控频道
+                val strategyId = channel.removePrefix("crypto_tail_monitor_").toLongOrNull()
+                if (strategyId != null && cryptoTailMonitorService != null) {
+                    val callback: (CryptoTailMonitorPushData) -> Unit = { message ->
+                        pushData(sessionId, channel, message)
+                    }
+                    monitorChannelCallbacks.getOrPut(sessionId) { mutableMapOf() }[strategyId] = callback
+                    cryptoTailMonitorService!!.subscribe(sessionId, strategyId, callback)
+                } else {
+                    logger.warn("无效的加密价差策略监控频道或服务未初始化: $channel")
+                    sendSubscribeAck(sessionId, channel, false, "无效的策略ID")
+                }
+            }
             else -> {
                 logger.warn("未知的频道: $channel")
                 sendSubscribeAck(sessionId, channel, false, "未知的频道")
@@ -122,15 +157,58 @@ class WebSocketSubscriptionService(
         channelSubscriptions[channel]?.remove(sessionId)
         
         // 取消推送服务的订阅（推送服务内部会处理是否停止轮询）
-        when (channel) {
-            "position" -> positionPushService.unsubscribe(sessionId)
-            "order" -> {
+        when {
+            channel == "position" -> positionPushService.unsubscribe(sessionId)
+            channel == "order" -> {
                 // 取消订阅所有账户的订单推送
                 val callback = orderChannelCallbacks.remove(sessionId)
                 if (callback != null) {
                     orderPushService.unsubscribeAll(callback)
                 }
             }
+            channel.startsWith("crypto_tail_monitor_") -> {
+                // 取消加密价差策略监控订阅
+                val strategyId = channel.removePrefix("crypto_tail_monitor_").toLongOrNull()
+                if (strategyId != null) {
+                    monitorChannelCallbacks[sessionId]?.remove(strategyId)
+                    cryptoTailMonitorService?.unsubscribe(sessionId, strategyId)
+                }
+            }
+        }
+    }
+    
+    /**
+     * 注册加密价差策略监控回调（由 CryptoTailMonitorService 调用）
+     */
+    fun registerMonitorCallback(sessionId: String, strategyId: Long, callback: (CryptoTailMonitorPushData) -> Unit) {
+        monitorChannelCallbacks.getOrPut(sessionId) { mutableMapOf() }[strategyId] = callback
+    }
+    
+    /**
+     * 注销加密价差策略监控回调（由 CryptoTailMonitorService 调用）
+     */
+    fun unregisterMonitorCallback(sessionId: String, strategyId: Long) {
+        monitorChannelCallbacks[sessionId]?.remove(strategyId)
+    }
+    
+    /**
+     * 推送加密价差策略监控数据（由 CryptoTailMonitorService 调用）
+     */
+    fun pushMonitorData(strategyId: Long, data: CryptoTailMonitorPushData) {
+        val channel = "crypto_tail_monitor_$strategyId"
+        val sessionIds = channelSubscriptions[channel] ?: return
+        
+        for (sessionId in sessionIds) {
+            val callback = sessionCallbacks[sessionId]
+            if (callback != null) {
+                val message = WsMessage(
+                    type = WebSocketMessageType.DATA.value,
+                    channel = channel,
+                    payload = data,
+                    timestamp = System.currentTimeMillis()
+                )
+                callback(message)
+            }
         }
     }
     
@@ -168,4 +246,3 @@ class WebSocketSubscriptionService(
         }
     }
 }
-
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailMonitorService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailMonitorService.kt
new file mode 100644
index 0000000..d713be1
--- /dev/null
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailMonitorService.kt
@@ -0,0 +1,840 @@
+package com.wrbug.polymarketbot.service.cryptotail
+
+import com.wrbug.polymarketbot.api.GammaEventBySlugResponse
+import com.wrbug.polymarketbot.constants.PolymarketConstants
+import com.wrbug.polymarketbot.dto.CryptoTailMonitorInitRequest
+import com.wrbug.polymarketbot.dto.CryptoTailMonitorInitResponse
+import com.wrbug.polymarketbot.dto.CryptoTailMonitorPushData
+import com.wrbug.polymarketbot.entity.CryptoTailStrategy
+import com.wrbug.polymarketbot.repository.AccountRepository
+import com.wrbug.polymarketbot.repository.CryptoTailStrategyRepository
+import com.wrbug.polymarketbot.service.binance.BinanceKlineAutoSpreadService
+import com.wrbug.polymarketbot.service.binance.BinanceKlineService
+import com.wrbug.polymarketbot.service.common.WebSocketSubscriptionService
+import com.wrbug.polymarketbot.util.RetrofitFactory
+import com.wrbug.polymarketbot.util.createClient
+import com.wrbug.polymarketbot.util.fromJson
+import com.wrbug.polymarketbot.util.toJson
+import com.wrbug.polymarketbot.util.toSafeBigDecimal
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.sync.Mutex
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.WebSocket
+import okhttp3.WebSocketListener
+import org.slf4j.LoggerFactory
+import org.springframework.context.event.EventListener
+import org.springframework.stereotype.Service
+import jakarta.annotation.PostConstruct
+import jakarta.annotation.PreDestroy
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
+import java.math.BigDecimal
+import java.math.RoundingMode
+import java.util.Collections
+import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.atomic.AtomicBoolean
+import java.util.concurrent.atomic.AtomicReference
+
+/**
+ * 加密价差策略监控服务
+ * 负责实时推送监控数据到前端
+ */
+@Service
+class CryptoTailMonitorService(
+    private val strategyRepository: CryptoTailStrategyRepository,
+    private val accountRepository: AccountRepository,
+    private val retrofitFactory: RetrofitFactory,
+    private val binanceKlineService: BinanceKlineService,
+    private val binanceKlineAutoSpreadService: BinanceKlineAutoSpreadService,
+    private val webSocketSubscriptionService: WebSocketSubscriptionService
+) {
+
+    private val logger = LoggerFactory.getLogger(CryptoTailMonitorService::class.java)
+    private val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())
+
+    /** 当前周期 token 映射 */
+    private val currentPeriodTokenToStrategy = AtomicReference<Map<String, List<MonitorEntry>>>(emptyMap())
+
+    /** 下一周期 token 映射 */
+    private val nextPeriodTokenToStrategy = AtomicReference<Map<String, List<MonitorEntry>>>(emptyMap())
+
+    /** strategyId -> 当前价格数据 */
+    private val strategyPriceData = ConcurrentHashMap<Long, StrategyPriceData>()
+
+    /** strategyId -> 订阅者数量 */
+    private val strategySubscribers = ConcurrentHashMap<Long, Int>()
+
+    private var currentPeriodWebSocket: WebSocket? = null
+    private var nextPeriodWebSocket: WebSocket? = null
+    private val wsUrl = PolymarketConstants.RTDS_WS_URL + "/ws/market"
+
+    private val client by lazy {
+        createClient().build()
+    }
+
+    private val reconnectDelayMs = 3_000L
+    private var reconnectJob: Job? = null
+    private val closedForNoSubscribers = AtomicBoolean(false)
+    private val connectLock = Any()
+
+    /** 防止 refreshSubscription 并发执行（周期结束时定时器与消息可能同时触发） */
+    private val refreshSubscriptionMutex = Mutex()
+
+    /** 周期结束倒计时 Job */
+    private var periodEndCountdownJob: Job? = null
+
+    /** 定时推送 Job（每 1.5 秒推送一次，保证 BTC 价格和分时图持续更新） */
+    private var periodicPushJob: Job? = null
+    private val pushIntervalMs = 1_500L
+
+    /** 策略推送历史（用于中途进入时补全分时图，最多保留 300 条） */
+    private val strategyPushHistory = ConcurrentHashMap<Long, MutableList<CryptoTailMonitorPushData>>()
+    private val strategyHistoryPeriod = ConcurrentHashMap<Long, Long>()
+    private val maxHistorySize = 300
+
+    /** price_change 推送节流：每策略最近一次推送时间，1s 内不重复推送 */
+    private val lastPriceChangePushTime = ConcurrentHashMap<Long, Long>()
+    private val priceChangePushThrottleMs = 1_000L
+
+    /** 当前周期/下一周期构建时缓存的市场标题，key = "strategyId-periodStartUnix"，供推送携带 */
+    private val marketTitleByStrategyPeriod = ConcurrentHashMap<String, String>()
+
+    data class MonitorEntry(
+        val strategyId: Long,
+        val strategy: CryptoTailStrategy,
+        val periodStartUnix: Long,
+        val outcomeIndex: Int,
+        val tokenId: String,
+        /** 是否为下一个周期（用于预先订阅） */
+        val isNextPeriod: Boolean = false
+    )
+
+    data class StrategyPriceData(
+        val currentPriceUp: BigDecimal? = null,
+        val currentPriceDown: BigDecimal? = null,
+        /** BTC 开盘价 USDC（币安 K 线 open） */
+        val openPriceBtc: BigDecimal? = null,
+        val spreadUp: BigDecimal? = null,
+        val spreadDown: BigDecimal? = null,
+        val minSpreadLineUp: BigDecimal? = null,
+        val minSpreadLineDown: BigDecimal? = null,
+        val triggered: Boolean = false,
+        val triggerDirection: String? = null,
+        val lastUpdateTime: Long = System.currentTimeMillis(),
+        /** 当前周期开始时间（用于双连接周期切换） */
+        val periodStartUnix: Long? = null
+    )
+
+    @PostConstruct
+    fun init() {
+        // 服务启动时不主动连接，等待前端订阅
+    }
+
+    /**
+     * 初始化监控数据
+     */
+    fun initMonitor(request: CryptoTailMonitorInitRequest): Result<CryptoTailMonitorInitResponse> {
+        return try {
+            val strategy = strategyRepository.findById(request.strategyId).orElse(null)
+            if (strategy == null) {
+                return Result.failure(IllegalArgumentException("策略不存在"))
+            }
+
+            val account = accountRepository.findById(strategy.accountId).orElse(null)
+            val nowSeconds = System.currentTimeMillis() / 1000
+            val periodStartUnix = (nowSeconds / strategy.intervalSeconds) * strategy.intervalSeconds
+
+            // 获取市场信息
+            val slug = "${strategy.marketSlugPrefix}-$periodStartUnix"
+            val event = fetchEventBySlug(slug).getOrNull()
+            val market = event?.markets?.firstOrNull()
+            val tokenIds = parseClobTokenIds(market?.clobTokenIds)
+
+            // 获取开盘价（币安 K 线 open = BTC 价格 USDC）
+            val openClose = binanceKlineService.getCurrentOpenClose(
+                strategy.marketSlugPrefix,
+                strategy.intervalSeconds,
+                periodStartUnix
+            )
+            val openPriceBtc = openClose?.first
+
+            // 获取自动计算的最小价差
+            var autoMinSpreadUp: BigDecimal? = null
+            var autoMinSpreadDown: BigDecimal? = null
+            if (strategy.spreadMode.name.uppercase() == "AUTO") {
+                val autoSpreads = binanceKlineAutoSpreadService.computeAndCache(
+                    strategy.marketSlugPrefix,
+                    strategy.intervalSeconds,
+                    periodStartUnix
+                )
+                autoMinSpreadUp = autoSpreads?.first
+                autoMinSpreadDown = autoSpreads?.second
+            }
+
+            // 保存价格数据到缓存
+            val priceData = StrategyPriceData(
+                openPriceBtc = openPriceBtc,
+                minSpreadLineUp = autoMinSpreadUp ?: strategy.spreadValue?.toSafeBigDecimal(),
+                minSpreadLineDown = autoMinSpreadDown ?: strategy.spreadValue?.toSafeBigDecimal(),
+                periodStartUnix = periodStartUnix
+            )
+            strategyPriceData[strategy.id!!] = priceData
+
+            val response = CryptoTailMonitorInitResponse(
+                strategyId = strategy.id!!,
+                name = strategy.name ?: "",
+                accountId = strategy.accountId,
+                accountName = account?.accountName ?: "",
+                marketSlugPrefix = strategy.marketSlugPrefix,
+                marketTitle = event?.title ?: strategy.marketSlugPrefix,
+                intervalSeconds = strategy.intervalSeconds,
+                periodStartUnix = periodStartUnix,
+                windowStartSeconds = strategy.windowStartSeconds,
+                windowEndSeconds = strategy.windowEndSeconds,
+                minPrice = strategy.minPrice.toPlainString(),
+                maxPrice = strategy.maxPrice.toPlainString(),
+                minSpreadMode = strategy.spreadMode.name,
+                spreadDirection = strategy.spreadDirection.name,
+                minSpreadValue = strategy.spreadValue?.toPlainString(),
+                autoMinSpreadUp = autoMinSpreadUp?.toPlainString(),
+                autoMinSpreadDown = autoMinSpreadDown?.toPlainString(),
+                openPriceBtc = openPriceBtc?.setScale(2, RoundingMode.HALF_UP)?.toPlainString(),
+                tokenIdUp = tokenIds.getOrNull(0),
+                tokenIdDown = tokenIds.getOrNull(1),
+                currentTimestamp = System.currentTimeMillis(),
+                enabled = strategy.enabled
+            )
+
+            Result.success(response)
+        } catch (e: Exception) {
+            logger.error("初始化监控失败: ${e.message}", e)
+            Result.failure(e)
+        }
+    }
+
+    /**
+     * 订阅策略监控
+     */
+    fun subscribe(sessionId: String, strategyId: Long, callback: (CryptoTailMonitorPushData) -> Unit) {
+        // 增加订阅计数
+        val count = strategySubscribers.merge(strategyId, 1) { old, inc -> old + inc } ?: 1
+
+        // 注册推送回调
+        webSocketSubscriptionService.registerMonitorCallback(sessionId, strategyId, callback)
+
+        // 如果是第一个订阅者，启动 WebSocket 和定时推送
+        if (count == 1) {
+            scope.launch {
+                refreshSubscription()
+            }
+            startPeriodicPush()
+        }
+
+        // 立即发送当前数据
+        scope.launch {
+            try {
+                sendCurrentData(sessionId, strategyId, callback)
+            } catch (e: Exception) {
+                logger.error("发送当前监控数据失败: $sessionId, ${e.message}")
+            }
+        }
+    }
+
+    /**
+     * 取消订阅策略监控
+     */
+    fun unsubscribe(sessionId: String, strategyId: Long) {
+        // 减少订阅计数
+        val currentCount = strategySubscribers[strategyId] ?: 0
+        val newCount = (currentCount - 1).coerceAtLeast(0)
+
+        if (newCount == 0) {
+            strategySubscribers.remove(strategyId)
+        } else {
+            strategySubscribers[strategyId] = newCount
+        }
+
+        // 移除回调
+        webSocketSubscriptionService.unregisterMonitorCallback(sessionId, strategyId)
+
+        // 如果没有订阅者，关闭 WebSocket 和定时推送
+        if (newCount == 0) {
+            scope.launch {
+                refreshSubscription()
+            }
+            stopPeriodicPush()
+        }
+    }
+
+    private fun startPeriodicPush() {
+        if (periodicPushJob?.isActive == true) return
+        periodicPushJob = scope.launch {
+            while (strategySubscribers.isNotEmpty() && strategySubscribers.values.any { (it ?: 0) > 0 }) {
+                delay(pushIntervalMs)
+                if (closedForNoSubscribers.get()) continue
+                val ids = strategySubscribers.filter { (it.value ?: 0) > 0 }.keys.toList()
+                for (strategyId in ids) {
+                    try {
+                        val strategy = strategyRepository.findById(strategyId).orElse(null) ?: continue
+                        val priceData = strategyPriceData[strategyId] ?: continue
+                        val pushData = buildPushData(strategy, priceData)
+                        addToHistoryAndPush(strategyId, pushData)
+                    } catch (e: Exception) {
+                        logger.debug("定时推送失败 strategyId=$strategyId: ${e.message}")
+                    }
+                }
+            }
+        }
+    }
+
+    private fun stopPeriodicPush() {
+        if (strategySubscribers.isEmpty() || strategySubscribers.values.all { (it ?: 0) <= 0 }) {
+            periodicPushJob?.cancel()
+            periodicPushJob = null
+        }
+    }
+
+    /**
+     * 发送当前数据（含历史补全，用于中途进入时填充分时图）
+     */
+    private suspend fun sendCurrentData(
+        sessionId: String,
+        strategyId: Long,
+        callback: (CryptoTailMonitorPushData) -> Unit
+    ) {
+        val strategy = strategyRepository.findById(strategyId).orElse(null) ?: return
+        val priceData = strategyPriceData[strategyId] ?: StrategyPriceData()
+
+        val history = strategyPushHistory[strategyId]?.let { list ->
+            synchronized(list) { list.toList() }
+        } ?: emptyList()
+        for (item in history) {
+            callback(item)
+        }
+
+        val pushData = buildPushData(strategy, priceData)
+        callback(pushData)
+    }
+
+    /**
+     * 刷新订阅：双连接模式。当前周期连接 + 下一周期连接；周期切换时关闭过期连接，下一连接晋升为当前，并新建下一周期连接。
+     * 使用 Mutex 防止周期结束时 scheduleRefreshAtPeriodEnd 与 maybeRefreshSubscriptionIfPeriodChanged 同时触发导致重复执行。
+     */
+    private suspend fun refreshSubscription() {
+        if (!refreshSubscriptionMutex.tryLock()) {
+            return
+        }
+        try {
+            refreshSubscriptionInternal()
+        } finally {
+            refreshSubscriptionMutex.unlock()
+        }
+    }
+
+    private suspend fun refreshSubscriptionInternal() {
+        periodEndCountdownJob?.cancel()
+        periodEndCountdownJob = null
+
+        val subscribedStrategyIds = strategySubscribers.keys.filter { (strategySubscribers[it] ?: 0) > 0 }
+        if (subscribedStrategyIds.isEmpty()) {
+            closeAllWebSockets()
+            return
+        }
+
+        val strategies = strategyRepository.findAllById(subscribedStrategyIds).filter { it.enabled && it.id != null }
+        if (strategies.isEmpty()) {
+            closeAllWebSockets()
+            return
+        }
+
+        val nowSeconds = System.currentTimeMillis() / 1000
+        val isSwitch = currentPeriodWebSocket != null
+
+        if (isSwitch) {
+            // 周期切换：关闭当前周期连接，下一晋升为当前，新建下一周期连接
+            closeCurrentPeriodWebSocket()
+            currentPeriodWebSocket = nextPeriodWebSocket
+            nextPeriodWebSocket = null
+            val nextMap = nextPeriodTokenToStrategy.get()
+            currentPeriodTokenToStrategy.set(nextMap)
+            val nextPeriodByStrategy =
+                nextMap.values.flatten().distinctBy { it.strategyId }.associate { it.strategyId to it.periodStartUnix }
+            logger.info("周期切换：下一周期连接晋升为当前")
+            for ((strategyId, periodStartUnix) in nextPeriodByStrategy) {
+                updateStrategyPriceDataForPeriod(listOf(strategyId), periodStartUnix, pushDefault = true)
+            }
+            val (newNextTokenIds, newNextMap) = buildSubscriptionMapForNextPeriod(subscribedStrategyIds)
+            nextPeriodTokenToStrategy.set(newNextMap)
+            if (newNextTokenIds.isNotEmpty()) {
+                connectNextPeriod(newNextTokenIds, newNextMap)
+            } else {
+                logger.info("下一周期市场尚未创建，仅建立空连接以便周期切换时复用")
+                connectNextPeriod(emptyList(), emptyMap())
+            }
+            scheduleRefreshAtPeriodEnd(if (newNextMap.isNotEmpty()) newNextMap else nextMap)
+        } else {
+            // 首次：建立当前周期连接 + 下一周期连接
+            val (currentTokenIds, currentMap) = buildSubscriptionMapForCurrentPeriod(subscribedStrategyIds)
+            currentPeriodTokenToStrategy.set(currentMap)
+            for (entry in currentMap.values.flatten().distinctBy { it.strategyId }) {
+                updateStrategyPriceDataForPeriod(listOf(entry.strategyId), entry.periodStartUnix, pushDefault = false)
+            }
+            if (currentTokenIds.isEmpty()) {
+                closeAllWebSockets()
+                return
+            }
+            connectCurrentPeriod(currentTokenIds, currentMap)
+            val (nextTokenIds, nextMap) = buildSubscriptionMapForNextPeriod(subscribedStrategyIds)
+            nextPeriodTokenToStrategy.set(nextMap)
+            if (nextTokenIds.isNotEmpty()) {
+                connectNextPeriod(nextTokenIds, nextMap)
+            } else {
+                logger.info("下一周期市场尚未创建，先建立空连接，周期切换时会重新订阅")
+                connectNextPeriod(emptyList(), emptyMap())
+            }
+            scheduleRefreshAtPeriodEnd(currentMap)
+        }
+    }
+
+    /** 构建当前周期订阅（每个策略按自己的 interval 算当前周期） */
+    private suspend fun buildSubscriptionMapForCurrentPeriod(strategyIds: List<Long>): Pair<List<String>, Map<String, List<MonitorEntry>>> {
+        val strategies = strategyRepository.findAllById(strategyIds)
+        val nowSeconds = System.currentTimeMillis() / 1000
+        val tokenIdSet = mutableSetOf<String>()
+        val map = mutableMapOf<String, MutableList<MonitorEntry>>()
+
+        for (strategy in strategies) {
+            if (!strategy.enabled || strategy.id == null) continue
+            val strategyPeriod = (nowSeconds / strategy.intervalSeconds) * strategy.intervalSeconds
+            val slug = "${strategy.marketSlugPrefix}-$strategyPeriod"
+            val event = fetchEventBySlug(slug).getOrNull() ?: continue
+            marketTitleByStrategyPeriod["${strategy.id!!}-$strategyPeriod"] = event.title ?: strategy.marketSlugPrefix
+            val market = event.markets?.firstOrNull() ?: continue
+            val tokenIds = parseClobTokenIds(market.clobTokenIds)
+            if (tokenIds.size < 2) continue
+            for (i in tokenIds.indices) {
+                tokenIdSet.add(tokenIds[i])
+                map.getOrPut(tokenIds[i]) { mutableListOf() }.add(
+                    MonitorEntry(strategy.id!!, strategy, strategyPeriod, i, tokenIds[i], false)
+                )
+            }
+        }
+        return Pair(tokenIdSet.toList(), map)
+    }
+
+    /** 构建下一周期订阅（每个策略按自己的 interval 算下一周期） */
+    private suspend fun buildSubscriptionMapForNextPeriod(strategyIds: List<Long>): Pair<List<String>, Map<String, List<MonitorEntry>>> {
+        val strategies = strategyRepository.findAllById(strategyIds)
+        val nowSeconds = System.currentTimeMillis() / 1000
+        val tokenIdSet = mutableSetOf<String>()
+        val map = mutableMapOf<String, MutableList<MonitorEntry>>()
+
+        for (strategy in strategies) {
+            if (!strategy.enabled || strategy.id == null) {
+                continue
+            }
+            val currentPeriod = (nowSeconds / strategy.intervalSeconds) * strategy.intervalSeconds
+            val nextPeriod = currentPeriod + strategy.intervalSeconds
+            val slug = "${strategy.marketSlugPrefix}-$nextPeriod"
+            val event = fetchEventBySlug(slug).getOrNull()
+            if (event == null) {
+                continue
+            }
+            marketTitleByStrategyPeriod["${strategy.id!!}-$nextPeriod"] = event.title ?: strategy.marketSlugPrefix
+            val market = event.markets?.firstOrNull()
+            if (market == null) {
+                continue
+            }
+            val tokenIds = parseClobTokenIds(market.clobTokenIds)
+            if (tokenIds.size < 2) {
+                continue
+            }
+            for (i in tokenIds.indices) {
+                tokenIdSet.add(tokenIds[i])
+                map.getOrPut(tokenIds[i]) { mutableListOf() }.add(
+                    MonitorEntry(strategy.id!!, strategy, nextPeriod, i, tokenIds[i], true)
+                )
+            }
+        }
+        return Pair(tokenIdSet.toList(), map)
+    }
+
+    /** 更新策略价格数据为指定周期（开盘价、价差线等），可选是否推送默认 0.5 */
+    private suspend fun updateStrategyPriceDataForPeriod(
+        strategyIds: List<Long>,
+        periodStartUnix: Long,
+        pushDefault: Boolean
+    ) {
+        val strategies = strategyRepository.findAllById(strategyIds)
+        for (strategy in strategies) {
+            if (strategy.id == null) continue
+            val openClose = binanceKlineService.getCurrentOpenClose(
+                strategy.marketSlugPrefix,
+                strategy.intervalSeconds,
+                periodStartUnix
+            )
+            val openPriceBtc = openClose?.first
+            var minSpreadLineUp: BigDecimal? = null
+            var minSpreadLineDown: BigDecimal? = null
+            when (strategy.spreadMode.name.uppercase()) {
+                "FIXED" -> {
+                    minSpreadLineUp = strategy.spreadValue?.toSafeBigDecimal()
+                    minSpreadLineDown = strategy.spreadValue?.toSafeBigDecimal()
+                }
+
+                "AUTO" -> {
+                    val autoSpreads = binanceKlineAutoSpreadService.computeAndCache(
+                        strategy.marketSlugPrefix,
+                        strategy.intervalSeconds,
+                        periodStartUnix
+                    )
+                    minSpreadLineUp = autoSpreads?.first
+                    minSpreadLineDown = autoSpreads?.second
+                }
+            }
+            val existingData = strategyPriceData[strategy.id] ?: StrategyPriceData()
+            val periodChanged = existingData.periodStartUnix != null && existingData.periodStartUnix != periodStartUnix
+            val newData = StrategyPriceData(
+                currentPriceUp = if (periodChanged && pushDefault) BigDecimal("0.5") else existingData.currentPriceUp,
+                currentPriceDown = if (periodChanged && pushDefault) BigDecimal("0.5") else existingData.currentPriceDown,
+                spreadUp = if (periodChanged && pushDefault) BigDecimal("0.5") else existingData.spreadUp,
+                spreadDown = if (periodChanged && pushDefault) BigDecimal("0.5") else existingData.spreadDown,
+                openPriceBtc = openPriceBtc,
+                minSpreadLineUp = minSpreadLineUp,
+                minSpreadLineDown = minSpreadLineDown,
+                periodStartUnix = periodStartUnix
+            )
+            strategyPriceData[strategy.id!!] = newData
+            if (periodChanged && pushDefault) {
+                val pushData = buildPushData(strategy, newData)
+                addToHistoryAndPush(strategy.id!!, pushData)
+            }
+        }
+    }
+
+    private fun connectCurrentPeriod(tokenIds: List<String>, map: Map<String, List<MonitorEntry>>) {
+        if (currentPeriodWebSocket != null) return
+        val request = Request.Builder().url(wsUrl).build()
+        currentPeriodWebSocket = client.newWebSocket(request, object : WebSocketListener() {
+            override fun onOpen(webSocket: WebSocket, response: okhttp3.Response) {
+                closedForNoSubscribers.set(false)
+                val msg = """{"type":"MARKET","assets_ids":${tokenIds.toJson()}}"""
+                try {
+                    webSocket.send(msg)
+                    logger.info("加密价差策略监控 WebSocket（当前周期）已连接并订阅: ${tokenIds.size} 个 token")
+                } catch (e: Exception) {
+                    logger.warn("发送当前周期订阅失败: ${e.message}")
+                }
+            }
+
+            override fun onMessage(webSocket: WebSocket, text: String) {
+                handleMessage(webSocket, text)
+            }
+
+            override fun onClosing(webSocket: WebSocket, code: Int, reason: String) {
+                if (this@CryptoTailMonitorService.currentPeriodWebSocket == webSocket) {
+                    this@CryptoTailMonitorService.currentPeriodWebSocket = null
+                    if (!closedForNoSubscribers.get()) scheduleReconnect()
+                }
+            }
+
+            override fun onFailure(webSocket: WebSocket, t: Throwable, response: okhttp3.Response?) {
+                if (this@CryptoTailMonitorService.currentPeriodWebSocket == webSocket) {
+                    this@CryptoTailMonitorService.currentPeriodWebSocket = null
+                    scheduleReconnect()
+                }
+            }
+        })
+    }
+
+    private fun connectNextPeriod(tokenIds: List<String>, map: Map<String, List<MonitorEntry>>) {
+        if (nextPeriodWebSocket != null) {
+            return
+        }
+        val request = Request.Builder().url(wsUrl).build()
+        nextPeriodWebSocket = client.newWebSocket(request, object : WebSocketListener() {
+            override fun onOpen(webSocket: WebSocket, response: okhttp3.Response) {
+                val msg = """{"type":"MARKET","assets_ids":${tokenIds.toJson()}}"""
+                try {
+                    webSocket.send(msg)
+                    if (tokenIds.isEmpty()) {
+                        logger.info("加密价差策略监控 WebSocket（下一周期）已连接，暂无 token 订阅，等待周期切换后更新")
+                    } else {
+                        logger.info("加密价差策略监控 WebSocket（下一周期）已连接并订阅: ${tokenIds.size} 个 token")
+                    }
+                } catch (e: Exception) {
+                    logger.warn("发送下一周期订阅失败: ${e.message}")
+                }
+            }
+
+            override fun onMessage(webSocket: WebSocket, text: String) {
+                handleMessage(webSocket, text)
+            }
+
+            override fun onClosing(webSocket: WebSocket, code: Int, reason: String) {
+                if (this@CryptoTailMonitorService.nextPeriodWebSocket == webSocket) {
+                    this@CryptoTailMonitorService.nextPeriodWebSocket = null
+                }
+            }
+
+            override fun onFailure(webSocket: WebSocket, t: Throwable, response: okhttp3.Response?) {
+                if (this@CryptoTailMonitorService.nextPeriodWebSocket == webSocket) {
+                    this@CryptoTailMonitorService.nextPeriodWebSocket = null
+                }
+            }
+        })
+    }
+
+    private fun closeCurrentPeriodWebSocket() {
+        currentPeriodWebSocket?.close(1000, "period_ended")
+        currentPeriodWebSocket = null
+        logger.info("加密价差策略监控 WebSocket（当前周期）已关闭")
+    }
+
+    private fun closeAllWebSockets() {
+        reconnectJob?.cancel()
+        reconnectJob = null
+        closedForNoSubscribers.set(true)
+        currentPeriodWebSocket?.close(1000, "no_subscribers")
+        currentPeriodWebSocket = null
+        nextPeriodWebSocket?.close(1000, "no_subscribers")
+        nextPeriodWebSocket = null
+        logger.info("加密价差策略监控 WebSocket 已全部关闭（无订阅者）")
+    }
+
+    private fun handleMessage(webSocket: WebSocket, text: String) {
+        if (text == "pong" || text.isEmpty()) return
+        if (closedForNoSubscribers.get()) return
+
+        maybeRefreshSubscriptionIfPeriodChanged()
+
+        val json = text.fromJson<com.google.gson.JsonObject>() ?: return
+        val eventType = (json.get("event_type") as? com.google.gson.JsonPrimitive)?.asString ?: return
+        val map = currentPeriodTokenToStrategy.get()
+
+        when (eventType) {
+            "price_change" -> {
+                val priceChanges = json.get("price_changes") as? com.google.gson.JsonArray ?: return
+                for (i in 0 until priceChanges.size()) {
+                    val pc = priceChanges.get(i) as? com.google.gson.JsonObject ?: continue
+                    val assetId = (pc.get("asset_id") as? com.google.gson.JsonPrimitive)?.asString ?: continue
+                    val bestBidStr = (pc.get("best_bid") as? com.google.gson.JsonPrimitive)?.asString
+                    val bestBid = bestBidStr?.toSafeBigDecimal()
+                    if (bestBid != null) onPriceUpdate(assetId, bestBid, map)
+                }
+            }
+        }
+    }
+
+    private fun onPriceUpdate(tokenId: String, bestBid: BigDecimal, map: Map<String, List<MonitorEntry>>) {
+        if (closedForNoSubscribers.get()) return
+        val entries = map[tokenId] ?: return
+
+        for (entry in entries) {
+            val strategy = entry.strategy
+            val priceData = strategyPriceData[strategy.id!!] ?: StrategyPriceData()
+
+            // 根据方向更新价格
+            val newPriceData = if (entry.outcomeIndex == 0) {
+                // Up 方向
+                priceData.copy(
+                    currentPriceUp = bestBid,
+                    currentPriceDown = BigDecimal.ONE.subtract(bestBid),
+                    spreadUp = BigDecimal.ONE.subtract(bestBid),
+                    spreadDown = bestBid,
+                    lastUpdateTime = System.currentTimeMillis()
+                )
+            } else {
+                // Down 方向
+                priceData.copy(
+                    currentPriceDown = bestBid,
+                    currentPriceUp = BigDecimal.ONE.subtract(bestBid),
+                    spreadUp = bestBid,
+                    spreadDown = BigDecimal.ONE.subtract(bestBid),
+                    lastUpdateTime = System.currentTimeMillis()
+                )
+            }
+
+            strategyPriceData[strategy.id!!] = newPriceData
+
+            val now = System.currentTimeMillis()
+            val last = lastPriceChangePushTime[strategy.id!!] ?: 0L
+            if (now - last >= priceChangePushThrottleMs) {
+                lastPriceChangePushTime[strategy.id!!] = now
+                val pushData = buildPushData(strategy, newPriceData)
+                addToHistoryAndPush(strategy.id!!, pushData)
+            }
+        }
+    }
+
+    private fun addToHistoryAndPush(strategyId: Long, pushData: CryptoTailMonitorPushData) {
+        addToHistory(strategyId, pushData)
+        webSocketSubscriptionService.pushMonitorData(strategyId, pushData)
+    }
+
+    private fun addToHistory(strategyId: Long, pushData: CryptoTailMonitorPushData) {
+        val list = strategyPushHistory.getOrPut(strategyId) {
+            Collections.synchronizedList(mutableListOf<CryptoTailMonitorPushData>())
+        }
+        synchronized(list) {
+            val lastPeriod = strategyHistoryPeriod[strategyId]
+            if (lastPeriod != null && lastPeriod != pushData.periodStartUnix) {
+                list.clear()
+            }
+            strategyHistoryPeriod[strategyId] = pushData.periodStartUnix
+            list.add(pushData)
+            while (list.size > maxHistorySize) {
+                list.removeAt(0)
+            }
+        }
+    }
+
+    /**
+     * 构建推送数据
+     * 最新价、价差使用币安 K 线的 BTC 价格（open/close）
+     */
+    private fun buildPushData(strategy: CryptoTailStrategy, priceData: StrategyPriceData): CryptoTailMonitorPushData {
+        val nowSeconds = System.currentTimeMillis() / 1000
+        val periodStartUnix = (nowSeconds / strategy.intervalSeconds) * strategy.intervalSeconds
+        val periodEndUnix = periodStartUnix + strategy.intervalSeconds
+        val remainingSeconds = (periodEndUnix - nowSeconds).toInt().coerceAtLeast(0)
+
+        val windowStart = periodStartUnix + strategy.windowStartSeconds
+        val windowEnd = periodStartUnix + strategy.windowEndSeconds
+        val inTimeWindow = nowSeconds >= windowStart && nowSeconds < windowEnd
+
+        // 币安 K 线：open = 周期开盘价，close = 当前最新价（实时更新）
+        val openClose = binanceKlineService.getCurrentOpenClose(
+            strategy.marketSlugPrefix,
+            strategy.intervalSeconds,
+            periodStartUnix
+        )
+        val openPriceBtc = priceData.openPriceBtc ?: openClose?.first
+        val currentPriceBtc = openClose?.second
+        // K 线数据回来后更新缓存，供后续使用
+        if (openPriceBtc != null && priceData.openPriceBtc == null && strategy.id != null) {
+            strategyPriceData[strategy.id] = priceData.copy(openPriceBtc = openPriceBtc)
+        }
+        val spreadBtc = if (openPriceBtc != null && currentPriceBtc != null) {
+            currentPriceBtc.subtract(openPriceBtc)
+        } else null
+
+        // 判断价格区间（Polymarket 0-1）
+        val currentUp = priceData.currentPriceUp
+        val currentDown = priceData.currentPriceDown
+        val inPriceRangeUp = currentUp != null &&
+                currentUp >= strategy.minPrice && currentUp <= strategy.maxPrice
+        val inPriceRangeDown = currentDown != null &&
+                currentDown >= strategy.minPrice && currentDown <= strategy.maxPrice
+
+        val marketTitle = marketTitleByStrategyPeriod["${strategy.id!!}-$periodStartUnix"] ?: strategy.marketSlugPrefix
+
+        return CryptoTailMonitorPushData(
+            strategyId = strategy.id!!,
+            timestamp = System.currentTimeMillis(),
+            periodStartUnix = periodStartUnix,
+            marketTitle = marketTitle,
+            currentPriceUp = priceData.currentPriceUp?.setScale(4, RoundingMode.HALF_UP)?.toPlainString(),
+            currentPriceDown = priceData.currentPriceDown?.setScale(4, RoundingMode.HALF_UP)?.toPlainString(),
+            spreadUp = priceData.spreadUp?.setScale(4, RoundingMode.HALF_UP)?.toPlainString(),
+            spreadDown = priceData.spreadDown?.setScale(4, RoundingMode.HALF_UP)?.toPlainString(),
+            minSpreadLineUp = priceData.minSpreadLineUp?.setScale(2, RoundingMode.HALF_UP)?.toPlainString(),
+            minSpreadLineDown = priceData.minSpreadLineDown?.setScale(2, RoundingMode.HALF_UP)?.toPlainString(),
+            openPriceBtc = openPriceBtc?.setScale(2, RoundingMode.HALF_UP)?.toPlainString(),
+            currentPriceBtc = currentPriceBtc?.setScale(2, RoundingMode.HALF_UP)?.toPlainString(),
+            spreadBtc = spreadBtc?.setScale(2, RoundingMode.HALF_UP)?.toPlainString(),
+            remainingSeconds = remainingSeconds,
+            inTimeWindow = inTimeWindow,
+            inPriceRangeUp = inPriceRangeUp,
+            inPriceRangeDown = inPriceRangeDown,
+            triggered = priceData.triggered,
+            triggerDirection = priceData.triggerDirection,
+            periodEnded = remainingSeconds <= 0
+        )
+    }
+
+    private fun maybeRefreshSubscriptionIfPeriodChanged() {
+        val subscribed = currentPeriodTokenToStrategy.get().values.flatten().distinctBy { it.strategyId }
+            .associate { it.strategyId to it.periodStartUnix }
+        if (subscribed.isEmpty()) return
+
+        val strategies = strategyRepository.findAllById(subscribed.keys)
+        val nowSeconds = System.currentTimeMillis() / 1000
+
+        for (s in strategies) {
+            if (s.id == null) continue
+            val currentPeriod = (nowSeconds / s.intervalSeconds) * s.intervalSeconds
+            val subPeriod = subscribed[s.id] ?: continue
+            if (currentPeriod != subPeriod) {
+                scope.launch { refreshSubscription() }
+                return
+            }
+        }
+    }
+
+    private fun scheduleRefreshAtPeriodEnd(newMap: Map<String, List<MonitorEntry>>) {
+        val entries = newMap.values.flatten()
+        if (entries.isEmpty()) return
+
+        val nextPeriodEndSeconds = entries.minOf { it.periodStartUnix + it.strategy.intervalSeconds }
+        val delayMs = (nextPeriodEndSeconds * 1000) - System.currentTimeMillis() + 2000
+        if (delayMs <= 0) return
+
+        periodEndCountdownJob = scope.launch {
+            delay(delayMs)
+            periodEndCountdownJob = null
+            refreshSubscription()
+        }
+    }
+
+    private fun closeWebSocketForNoSubscribers() {
+        closeAllWebSockets()
+    }
+
+    private fun scheduleReconnect() {
+        if (reconnectJob?.isActive == true) return
+        reconnectJob = scope.launch {
+            delay(reconnectDelayMs)
+            reconnectJob = null
+            if (strategySubscribers.isNotEmpty()) {
+                logger.info("加密价差策略监控 WebSocket 尝试重连")
+                refreshSubscription()
+            }
+        }
+    }
+
+    private fun fetchEventBySlug(slug: String): Result<GammaEventBySlugResponse> {
+        return try {
+            val api = retrofitFactory.createGammaApi()
+            val response = runBlocking { api.getEventBySlug(slug) }
+            if (response.isSuccessful && response.body() != null) {
+                Result.success(response.body()!!)
+            } else {
+                Result.failure(Exception("${response.code()}"))
+            }
+        } catch (e: Exception) {
+            Result.failure(e)
+        }
+    }
+
+    private fun parseClobTokenIds(clobTokenIds: String?): List<String> {
+        if (clobTokenIds.isNullOrBlank()) return emptyList()
+        return clobTokenIds.fromJson<List<String>>() ?: emptyList()
+    }
+
+    @PreDestroy
+    fun destroy() {
+        reconnectJob?.cancel()
+        periodEndCountdownJob?.cancel()
+        periodicPushJob?.cancel()
+        currentPeriodWebSocket?.close(1000, "shutdown")
+        currentPeriodWebSocket = null
+        nextPeriodWebSocket?.close(1000, "shutdown")
+        nextPeriodWebSocket = null
+    }
+}
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailOrderNotificationPollingService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailOrderNotificationPollingService.kt
index 93d3d26..faba9f6 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailOrderNotificationPollingService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailOrderNotificationPollingService.kt
@@ -22,7 +22,7 @@ import org.springframework.transaction.annotation.Transactional
 import jakarta.annotation.PreDestroy
 
 /**
- * 尾盘策略订单 TG 通知轮询服务（与跟单一致）
+ * 加密价差策略订单 TG 通知轮询服务（与跟单一致）
  * 定时查询「下单成功且未发 TG」的触发记录，通过 CLOB getOrder 获取订单详情后发送 TG 并标记已发。
  */
 @Service
@@ -57,14 +57,14 @@ class CryptoTailOrderNotificationPollingService(
     @Scheduled(fixedDelay = 5000)
     fun scheduledSendPendingNotifications() {
         if (notificationJob != null && notificationJob!!.isActive) {
-            logger.debug("上一轮尾盘 TG 通知任务仍在执行，跳过本次")
+            logger.debug("上一轮加密价差策略 TG 通知任务仍在执行，跳过本次")
             return
         }
         notificationJob = scope.launch {
             try {
                 getSelf().sendPendingNotifications()
             } catch (e: Exception) {
-                logger.error("尾盘 TG 通知轮询异常: ${e.message}", e)
+                logger.error("加密价差策略 TG 通知轮询异常: ${e.message}", e)
             } finally {
                 notificationJob = null
             }
@@ -88,7 +88,7 @@ class CryptoTailOrderNotificationPollingService(
                     triggerRepository.save(trigger)
                 }
             } catch (e: Exception) {
-                logger.warn("尾盘 TG 通知单条失败: triggerId=${trigger.id}, orderId=${trigger.orderId}, ${e.message}", e)
+                logger.warn("加密价差策略 TG 通知单条失败: triggerId=${trigger.id}, orderId=${trigger.orderId}, ${e.message}", e)
             }
         }
     }
@@ -102,16 +102,16 @@ class CryptoTailOrderNotificationPollingService(
             return false
         }
         val apiSecret = try {
-            cryptoUtils.decrypt(account.apiSecret) ?: return false
+            cryptoUtils.decrypt(account.apiSecret)
         } catch (e: Exception) {
             logger.warn("解密 API Secret 失败: accountId=${account.id}", e)
             return false
         }
         val apiPassphrase = try {
-            cryptoUtils.decrypt(account.apiPassphrase) ?: ""
+            cryptoUtils.decrypt(account.apiPassphrase)
         } catch (e: Exception) { "" }
         val clobApi = retrofitFactory.createClobApi(
-            account.apiKey!!,
+            account.apiKey,
             apiSecret,
             apiPassphrase,
             account.walletAddress
@@ -142,7 +142,7 @@ class CryptoTailOrderNotificationPollingService(
             walletAddress = account.walletAddress,
             orderTime = orderTimeMs
         )
-        logger.info("尾盘订单 TG 通知已发送: orderId=$orderId, strategyId=${strategy.id}, triggerId=${trigger.id}")
+        logger.info("加密价差策略订单 TG 通知已发送: orderId=$orderId, strategyId=${strategy.id}, triggerId=${trigger.id}")
         return true
     }
 
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailOrderbookWsService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailOrderbookWsService.kt
index 84db01c..3eaefe9 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailOrderbookWsService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailOrderbookWsService.kt
@@ -35,7 +35,7 @@ import java.util.concurrent.atomic.AtomicBoolean
 import java.util.concurrent.atomic.AtomicReference
 
 /**
- * 尾盘策略订单簿 WebSocket 监听：订阅 CLOB Market 频道，收到订单簿/价格变更时若满足条件立即触发下单。
+ * 加密价差策略订单簿 WebSocket 监听：订阅 CLOB Market 频道，收到订单簿/价格变更时若满足条件立即触发下单。
  */
 @Service
 class CryptoTailOrderbookWsService(
@@ -103,7 +103,7 @@ class CryptoTailOrderbookWsService(
         try {
             webSocket?.close(1000, "shutdown")
         } catch (e: Exception) {
-            logger.debug("关闭尾盘策略 WebSocket 时异常: ${e.message}")
+            logger.debug("关闭加密价差策略 WebSocket 时异常: ${e.message}")
         }
         webSocket = null
         scopeJob.cancel()
@@ -116,7 +116,7 @@ class CryptoTailOrderbookWsService(
                 val request = Request.Builder().url(wsUrl).build()
                 webSocket = client.newWebSocket(request, object : WebSocketListener() {
                     override fun onOpen(webSocket: WebSocket, response: okhttp3.Response) {
-                        logger.info("尾盘策略订单簿 WebSocket 已连接")
+                        logger.info("加密价差策略订单簿 WebSocket 已连接")
                         refreshAndSubscribe(fromConnect = true)
                     }
 
@@ -130,13 +130,13 @@ class CryptoTailOrderbookWsService(
                     }
 
                     override fun onFailure(webSocket: WebSocket, t: Throwable, response: okhttp3.Response?) {
-                        logger.warn("尾盘策略订单簿 WebSocket 异常: ${t.message}")
+                        logger.warn("加密价差策略订单簿 WebSocket 异常: ${t.message}")
                         this@CryptoTailOrderbookWsService.webSocket = null
                         scheduleReconnect()
                     }
                 })
             } catch (e: Exception) {
-                logger.error("尾盘策略订单簿 WebSocket 连接失败: ${e.message}", e)
+                logger.error("加密价差策略订单簿 WebSocket 连接失败: ${e.message}", e)
                 scheduleReconnect()
             }
         }
@@ -150,7 +150,7 @@ class CryptoTailOrderbookWsService(
             delay(reconnectDelayMs)
             reconnectJob = null
             if (strategyRepository.findAllByEnabledTrue().isEmpty()) return@launch
-            logger.info("尾盘策略订单簿 WebSocket 尝试重连")
+            logger.info("加密价差策略订单簿 WebSocket 尝试重连")
             connect()
         }
     }
@@ -244,7 +244,7 @@ class CryptoTailOrderbookWsService(
         synchronized(refreshLock) {
             // 如果正在刷新，直接返回，避免重复调用
             if (isRefreshing.get()) {
-                logger.debug("尾盘策略订阅刷新已在进行中，跳过本次调用")
+                logger.debug("加密价差策略订阅刷新已在进行中，跳过本次调用")
                 return
             }
             isRefreshing.set(true)
@@ -281,7 +281,7 @@ class CryptoTailOrderbookWsService(
             val msg = """{"type":"MARKET","assets_ids":${tokenIds.toJson()}}"""
             try {
                 webSocket?.send(msg)
-                logger.info("尾盘策略订单簿订阅: ${tokenIds.size} 个 token, 市场: $marketSlugs")
+                logger.info("加密价差策略订单簿订阅: ${tokenIds.size} 个 token, 市场: $marketSlugs")
             } catch (e: Exception) {
                 logger.warn("发送订阅失败: ${e.message}")
                 return
@@ -303,9 +303,9 @@ class CryptoTailOrderbookWsService(
             try {
                 ws.close(1000, "subscription_change")
             } catch (e: Exception) {
-                logger.debug("关闭尾盘策略 WebSocket 时异常: ${e.message}")
+                logger.debug("关闭加密价差策略 WebSocket 时异常: ${e.message}")
             }
-            logger.info("尾盘策略订单簿 WebSocket 已关闭（订阅更新，将重连）")
+            logger.info("加密价差策略订单簿 WebSocket 已关闭（订阅更新，将重连）")
         }
     }
 
@@ -357,9 +357,9 @@ class CryptoTailOrderbookWsService(
             try {
                 ws.close(1000, "no_enabled_strategies")
             } catch (e: Exception) {
-                logger.debug("关闭尾盘策略 WebSocket 时异常: ${e.message}")
+                logger.debug("关闭加密价差策略 WebSocket 时异常: ${e.message}")
             }
-            logger.info("尾盘策略订单簿 WebSocket 已关闭（无启用策略）")
+            logger.info("加密价差策略订单簿 WebSocket 已关闭（无启用策略）")
         }
     }
 
@@ -377,7 +377,7 @@ class CryptoTailOrderbookWsService(
             periodEndCountdownJob = null
             refreshAndSubscribe()
         }
-        logger.debug("尾盘策略订单簿订阅倒计时: ${delayMs / 1000}s 后刷新")
+        logger.debug("加密价差策略订单簿订阅倒计时: ${delayMs / 1000}s 后刷新")
     }
 
     private fun buildSubscriptionMap(): Pair<List<String>, Map<String, List<WsBookEntry>>> {
@@ -391,23 +391,23 @@ class CryptoTailOrderbookWsService(
             val periodStartUnix = (nowSeconds / interval) * interval
             val windowEnd = periodStartUnix + strategy.windowEndSeconds
             if (nowSeconds >= windowEnd) {
-                logger.debug("尾盘策略跳过（已过时间窗口）: strategyId=${strategy.id}, slug=${strategy.marketSlugPrefix}, windowEnd=$windowEnd")
+                logger.debug("加密价差策略跳过（已过时间窗口）: strategyId=${strategy.id}, slug=${strategy.marketSlugPrefix}, windowEnd=$windowEnd")
                 continue
             }
             val slug = "${strategy.marketSlugPrefix}-$periodStartUnix"
             val event = runBlocking { fetchEventBySlugWithRetry(slug).getOrNull() }
             if (event == null) {
-                logger.warn("尾盘策略跳过（拉取事件失败）: strategyId=${strategy.id}, slug=$slug，请确认 Gamma 是否存在该 slug 或稍后重试")
+                logger.warn("加密价差策略跳过（拉取事件失败）: strategyId=${strategy.id}, slug=$slug，请确认 Gamma 是否存在该 slug 或稍后重试")
                 continue
             }
             val market = event.markets?.firstOrNull()
             if (market == null) {
-                logger.warn("尾盘策略跳过（事件无市场）: strategyId=${strategy.id}, slug=$slug")
+                logger.warn("加密价差策略跳过（事件无市场）: strategyId=${strategy.id}, slug=$slug")
                 continue
             }
             val tokenIds = parseClobTokenIds(market.clobTokenIds)
             if (tokenIds.size < 2) {
-                logger.warn("尾盘策略跳过（token 数量不足）: strategyId=${strategy.id}, slug=$slug, tokenCount=${tokenIds.size}")
+                logger.warn("加密价差策略跳过（token 数量不足）: strategyId=${strategy.id}, slug=$slug, tokenCount=${tokenIds.size}")
                 continue
             }
             tokenIdSet.addAll(tokenIds)
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailSettlementService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailSettlementService.kt
index 068ae91..a5550bc 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailSettlementService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailSettlementService.kt
@@ -27,7 +27,7 @@ import java.math.BigDecimal
 import java.math.RoundingMode
 
 /**
- * 尾盘策略结算轮询服务
+ * 加密价差策略结算轮询服务
  * 定时扫描「状态成功但未结算」的触发记录，通过 Gamma 获取 conditionId、链上查询结算结果，计算收益并回写。
  * 实际成交价与成交量使用 Data API 的 activity 接口获取（getUserActivity），比 CLOB getOrder 更准确；失败时回退为触发时的 amountUsdc + 固定价 0.99。
  */
@@ -60,14 +60,14 @@ class CryptoTailSettlementService(
     fun scheduledPollAndSettle() {
         val previousJob = settlementJob
         if (previousJob != null && previousJob.isActive) {
-            logger.debug("上一轮尾盘结算任务仍在执行，跳过本次调度")
+            logger.debug("上一轮加密价差策略结算任务仍在执行，跳过本次调度")
             return
         }
         settlementJob = settlementScope.launch {
             try {
                 doPollAndSettle()
             } catch (e: Exception) {
-                logger.error("尾盘策略结算定时任务异常: ${e.message}", e)
+                logger.error("加密价差策略结算定时任务异常: ${e.message}", e)
             } finally {
                 settlementJob = null
             }
@@ -91,11 +91,11 @@ class CryptoTailSettlementService(
             try {
                 if (settleOne(trigger)) settledCount++
             } catch (e: Exception) {
-                logger.warn("尾盘结算单条失败: triggerId=${trigger.id}, ${e.message}", e)
+                logger.warn("加密价差策略结算单条失败: triggerId=${trigger.id}, ${e.message}", e)
             }
         }
         if (settledCount > 0) {
-            logger.info("尾盘策略结算轮询完成: 处理=${pending.size}, 新结算=$settledCount")
+            logger.info("加密价差策略结算轮询完成: 处理=${pending.size}, 新结算=$settledCount")
         }
         return settledCount
     }
@@ -154,7 +154,7 @@ class CryptoTailSettlementService(
             settledAt = now
         )
         triggerRepository.save(updated)
-        logger.debug("尾盘结算已更新: triggerId=${trigger.id}, winnerOutcomeIndex=$winnerIndex, won=$won, pnl=$pnl")
+        logger.debug("加密价差策略结算已更新: triggerId=${trigger.id}, winnerOutcomeIndex=$winnerIndex, won=$won, pnl=$pnl")
         return true
     }
 
@@ -201,7 +201,7 @@ class CryptoTailSettlementService(
         conditionId: String
     ): ActivityFill? {
         val account = accountRepository.findById(strategy.accountId).orElse(null) ?: run {
-            logger.warn("尾盘结算未拉取 activity: 账户不存在, triggerId=${trigger.id}, accountId=${strategy.accountId}")
+            logger.warn("加密价差策略结算未拉取 activity: 账户不存在, triggerId=${trigger.id}, accountId=${strategy.accountId}")
             return null
         }
         val user = account.proxyAddress
@@ -220,7 +220,7 @@ class CryptoTailSettlementService(
                 sortDirection = "DESC"
             )
             if (!response.isSuccessful || response.body() == null) {
-                logger.warn("尾盘结算拉取 activity 失败: triggerId=${trigger.id}, code=${response.code()}")
+                logger.warn("加密价差策略结算拉取 activity 失败: triggerId=${trigger.id}, code=${response.code()}")
                 return null
             }
             val activities = response.body()!!
@@ -228,13 +228,13 @@ class CryptoTailSettlementService(
             val match = activities.firstOrNull { a ->
                 a.type == "TRADE" &&
                     a.conditionId == conditionId &&
-                    a.outcomeIndex != null && a.outcomeIndex!! in 0..1 &&
+                    a.outcomeIndex != null && a.outcomeIndex in 0..1 &&
                     a.outcomeIndex == trigger.outcomeIndex &&
                     a.side?.uppercase() == "BUY" &&
-                    a.price != null && a.price!! > 0 &&
-                    a.size != null && a.size!! > 0
+                    a.price != null && a.price > 0 &&
+                    a.size != null && a.size > 0
             } ?: run {
-                logger.debug("尾盘结算 activity 无匹配成交: triggerId=${trigger.id}, conditionId=$conditionId, outcomeIndex=${trigger.outcomeIndex}, 条数=${activities.size}")
+                logger.debug("加密价差策略结算 activity 无匹配成交: triggerId=${trigger.id}, conditionId=$conditionId, outcomeIndex=${trigger.outcomeIndex}, 条数=${activities.size}")
                 return null
             }
             val price = match.price!!.toSafeBigDecimal()
@@ -243,11 +243,11 @@ class CryptoTailSettlementService(
             if (price.gt(BigDecimal.ZERO) && size.gt(BigDecimal.ZERO)) {
                 ActivityFill(price = price, size = size, usdcSize = usdcSize)
             } else {
-                logger.debug("尾盘结算 activity 成交数据无效: triggerId=${trigger.id}, price=$price, size=$size")
+                logger.debug("加密价差策略结算 activity 成交数据无效: triggerId=${trigger.id}, price=$price, size=$size")
                 null
             }
         } catch (e: Exception) {
-            logger.warn("尾盘结算拉取 activity 异常，触发价/投入金额不会更新: triggerId=${trigger.id}, error=${e.message}")
+            logger.warn("加密价差策略结算拉取 activity 异常，触发价/投入金额不会更新: triggerId=${trigger.id}, error=${e.message}")
             null
         }
     }
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailStrategyExecutionService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailStrategyExecutionService.kt
index 32c0543..9119b1a 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailStrategyExecutionService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailStrategyExecutionService.kt
@@ -34,7 +34,7 @@ import java.math.RoundingMode
 import java.util.concurrent.ConcurrentHashMap
 import java.util.regex.Pattern
 
-/** 尾盘策略固定下单价格（最高价 0.99），不再在触发时拉取最优价 */
+/** 加密价差策略固定下单价格（最高价 0.99），不再在触发时拉取最优价 */
 private const val TRIGGER_FIXED_PRICE = "0.99"
 
 /** 最大价差模式（MAX）时，买入价格调整系数（加在触发价格上） */
@@ -62,7 +62,7 @@ private data class PeriodContext(
 )
 
 /**
- * 尾盘策略执行服务：按周期与时间窗口检查价格并下单，每周期最多触发一次。
+ * 加密价差策略执行服务：按周期与时间窗口检查价格并下单，每周期最多触发一次。
  * 周期开始预置账户、解密、费率、签名类型、CLOB 客户端；触发时按 outcomeIndex 计算 size 并签名提交。
  */
 @Service
@@ -131,17 +131,21 @@ class CryptoTailStrategyExecutionService(
         val decryptedKey = try {
             cryptoUtils.decrypt(account.privateKey) ?: return null
         } catch (e: Exception) {
-            logger.warn("尾盘策略周期上下文解密私钥失败: accountId=${account.id}", e)
+            logger.warn("加密价差策略周期上下文解密私钥失败: accountId=${account.id}", e)
             return null
         }
         val apiSecret = try {
-            account.apiSecret?.let { cryptoUtils.decrypt(it) } ?: ""
-        } catch (e: Exception) { "" }
+            account.apiSecret.let { cryptoUtils.decrypt(it) }
+        } catch (e: Exception) {
+            ""
+        }
         val apiPassphrase = try {
-            account.apiPassphrase?.let { cryptoUtils.decrypt(it) } ?: ""
-        } catch (e: Exception) { "" }
+            account.apiPassphrase.let { cryptoUtils.decrypt(it) }
+        } catch (e: Exception) {
+            ""
+        }
 
-        val clobApi = retrofitFactory.createClobApi(account.apiKey!!, apiSecret, apiPassphrase, account.walletAddress)
+        val clobApi = retrofitFactory.createClobApi(account.apiKey, apiSecret, apiPassphrase, account.walletAddress)
         val feeRateByTokenId = tokenIds.associate { tokenId ->
             tokenId to (clobService.getFeeRate(tokenId).getOrNull()?.toString() ?: "0")
         }
@@ -211,20 +215,28 @@ class CryptoTailStrategyExecutionService(
 
         val mutex = getTriggerMutex(strategy.id!!, periodStartUnix)
         mutex.withLock {
-            if (triggerRepository.findByStrategyIdAndPeriodStartUnix(strategy.id!!, periodStartUnix) != null) return@withLock
+            if (triggerRepository.findByStrategyIdAndPeriodStartUnix(
+                    strategy.id!!,
+                    periodStartUnix
+                ) != null
+            ) return@withLock
             val logKey = triggerLockKey(strategy.id!!, periodStartUnix)
             if (conditionLoggedCache.getIfPresent(logKey) == null) {
                 conditionLoggedCache.put(logKey, periodStartUnix + strategy.intervalSeconds)
-                val oc = binanceKlineService.getCurrentOpenClose(strategy.marketSlugPrefix, strategy.intervalSeconds, periodStartUnix)
+                val oc = binanceKlineService.getCurrentOpenClose(
+                    strategy.marketSlugPrefix,
+                    strategy.intervalSeconds,
+                    periodStartUnix
+                )
                 val openPrice = oc?.first?.toPlainString() ?: "-"
                 val closePrice = oc?.second?.toPlainString() ?: "-"
-                val strategyName = strategy.name?.takeIf { it.isNotBlank() } ?: "尾盘策略-${strategy.marketSlugPrefix}"
+                val strategyName = strategy.name?.takeIf { it.isNotBlank() } ?: "加密价差策略-${strategy.marketSlugPrefix}"
                 val direction = if (outcomeIndex == 0) "Up" else "Down"
                 val modeStr = if (strategy.spreadDirection == SpreadDirection.MAX) "最大价差" else "最小价差"
                 logger.info(
-                    "尾盘策略首次满足条件: strategyName=$strategyName, strategyId=${strategy.id}, " +
-                        "openPrice=$openPrice, closePrice=$closePrice, marketPrice=${bestBid.toPlainString()}, " +
-                        "direction=$direction, outcomeIndex=$outcomeIndex, spreadMode=$modeStr"
+                    "加密价差策略首次满足条件: strategyName=$strategyName, strategyId=${strategy.id}, " +
+                            "openPrice=$openPrice, closePrice=$closePrice, marketPrice=${bestBid.toPlainString()}, " +
+                            "direction=$direction, outcomeIndex=$outcomeIndex, spreadMode=$modeStr"
                 )
             }
             if (!passSpreadCheck(strategy, periodStartUnix, outcomeIndex)) return@withLock
@@ -235,23 +247,29 @@ class CryptoTailStrategyExecutionService(
 
     private fun passSpreadCheck(strategy: CryptoTailStrategy, periodStartUnix: Long, outcomeIndex: Int): Boolean {
         if (strategy.spreadMode == SpreadMode.NONE) return true
-        val oc = binanceKlineService.getCurrentOpenClose(strategy.marketSlugPrefix, strategy.intervalSeconds, periodStartUnix)
+        val oc = binanceKlineService.getCurrentOpenClose(
+            strategy.marketSlugPrefix,
+            strategy.intervalSeconds,
+            periodStartUnix
+        )
             ?: return false
         val (openP, closeP) = oc
         val spreadAbs = closeP.subtract(openP).abs()
-        
+
         // 获取有效价差
         val effectiveSpread = when (strategy.spreadMode) {
             SpreadMode.FIXED -> {
                 strategy.spreadValue?.takeIf { it > BigDecimal.ZERO } ?: return true
             }
+
             SpreadMode.AUTO -> {
                 val result = computeAutoEffectiveSpread(strategy, periodStartUnix, outcomeIndex) ?: return true
                 result.effectiveSpread.takeIf { it > BigDecimal.ZERO } ?: return true
             }
+
             SpreadMode.NONE -> return true
         }
-        
+
         // 根据价差方向判断
         return if (strategy.spreadDirection == SpreadDirection.MAX) {
             // 最大价差模式：价差 <= 配置值时触发
@@ -271,9 +289,22 @@ class CryptoTailStrategyExecutionService(
         val effectiveSpread: BigDecimal
     )
 
-    private fun computeAutoEffectiveSpread(strategy: CryptoTailStrategy, periodStartUnix: Long, outcomeIndex: Int): AutoSpreadResult? {
-        val baseSpread = binanceKlineAutoSpreadService.getAutoMinSpreadBase(strategy.marketSlugPrefix, strategy.intervalSeconds, periodStartUnix, outcomeIndex)
-            ?: binanceKlineAutoSpreadService.computeAndCache(strategy.marketSlugPrefix, strategy.intervalSeconds, periodStartUnix)?.let { if (outcomeIndex == 0) it.first else it.second }
+    private fun computeAutoEffectiveSpread(
+        strategy: CryptoTailStrategy,
+        periodStartUnix: Long,
+        outcomeIndex: Int
+    ): AutoSpreadResult? {
+        val baseSpread = binanceKlineAutoSpreadService.getAutoMinSpreadBase(
+            strategy.marketSlugPrefix,
+            strategy.intervalSeconds,
+            periodStartUnix,
+            outcomeIndex
+        )
+            ?: binanceKlineAutoSpreadService.computeAndCache(
+                strategy.marketSlugPrefix,
+                strategy.intervalSeconds,
+                periodStartUnix
+            )?.let { if (outcomeIndex == 0) it.first else it.second }
             ?: return null
         if (baseSpread <= BigDecimal.ZERO) return null
         val windowStartMs = (periodStartUnix + strategy.windowStartSeconds) * 1000L
@@ -306,18 +337,40 @@ class CryptoTailStrategyExecutionService(
             val amountUsdc = when (strategy.amountMode.uppercase()) {
                 "RATIO" -> {
                     val balanceResult = accountService.getAccountBalance(ctx.account.id)
-                    val availableBalance = balanceResult.getOrNull()?.availableBalance?.toSafeBigDecimal() ?: BigDecimal.ZERO
+                    val availableBalance =
+                        balanceResult.getOrNull()?.availableBalance?.toSafeBigDecimal() ?: BigDecimal.ZERO
                     availableBalance.multiply(strategy.amountValue).divide(BigDecimal("100"), 18, RoundingMode.DOWN)
                 }
+
                 else -> strategy.amountValue
             }
             if (amountUsdc < BigDecimal("1")) {
-                saveTriggerRecord(strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, amountUsdc, null, "fail", "投入金额不足")
+                saveTriggerRecord(
+                    strategy,
+                    periodStartUnix,
+                    marketTitle,
+                    outcomeIndex,
+                    triggerPrice,
+                    amountUsdc,
+                    null,
+                    "fail",
+                    "投入金额不足"
+                )
                 return
             }
 
             val tokenId = tokenIds.getOrNull(outcomeIndex) ?: run {
-                saveTriggerRecord(strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, amountUsdc, null, "fail", "tokenIds 越界")
+                saveTriggerRecord(
+                    strategy,
+                    periodStartUnix,
+                    marketTitle,
+                    outcomeIndex,
+                    triggerPrice,
+                    amountUsdc,
+                    null,
+                    "fail",
+                    "tokenIds 越界"
+                )
                 return
             }
 
@@ -350,7 +403,16 @@ class CryptoTailStrategyExecutionService(
                 orderType = "FAK",
                 deferExec = false
             )
-            submitOrderAndSaveRecord(ctx.clobApi, strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, amountUsdc, orderRequest)
+            submitOrderAndSaveRecord(
+                ctx.clobApi,
+                strategy,
+                periodStartUnix,
+                marketTitle,
+                outcomeIndex,
+                triggerPrice,
+                amountUsdc,
+                orderRequest
+            )
             return
         }
 
@@ -373,8 +435,18 @@ class CryptoTailStrategyExecutionService(
             if (response.isSuccessful && response.body() != null) {
                 val body = response.body()!!
                 if (body.success && body.orderId != null) {
-                    saveTriggerRecord(strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, amountUsdc, body.orderId, "success", null)
-                    logger.info("尾盘策略下单成功: strategyId=${strategy.id}, periodStartUnix=$periodStartUnix, outcomeIndex=$outcomeIndex, orderId=${body.orderId}")
+                    saveTriggerRecord(
+                        strategy,
+                        periodStartUnix,
+                        marketTitle,
+                        outcomeIndex,
+                        triggerPrice,
+                        amountUsdc,
+                        body.orderId,
+                        "success",
+                        null
+                    )
+                    logger.info("加密价差策略下单成功: strategyId=${strategy.id}, periodStartUnix=$periodStartUnix, outcomeIndex=$outcomeIndex, orderId=${body.orderId}")
                     return
                 }
                 failReason = body.errorMsg ?: "unknown"
@@ -384,10 +456,20 @@ class CryptoTailStrategyExecutionService(
             }
         } catch (e: Exception) {
             failReason = e.message ?: e.toString()
-            logger.error("尾盘策略下单异常: strategyId=${strategy.id}, periodStartUnix=$periodStartUnix", e)
+            logger.error("加密价差策略下单异常: strategyId=${strategy.id}, periodStartUnix=$periodStartUnix", e)
         }
-        saveTriggerRecord(strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, amountUsdc, null, "fail", failReason)
-        logger.error("尾盘策略下单失败: strategyId=${strategy.id}, periodStartUnix=$periodStartUnix, reason=$failReason")
+        saveTriggerRecord(
+            strategy,
+            periodStartUnix,
+            marketTitle,
+            outcomeIndex,
+            triggerPrice,
+            amountUsdc,
+            null,
+            "fail",
+            failReason
+        )
+        logger.error("加密价差策略下单失败: strategyId=${strategy.id}, periodStartUnix=$periodStartUnix, reason=$failReason")
     }
 
     /** 无预置上下文时的完整流程：固定价格 0.99，账户/解密/费率/签名在触发时执行 */
@@ -401,12 +483,32 @@ class CryptoTailStrategyExecutionService(
     ) {
         val account = accountRepository.findById(strategy.accountId).orElse(null) ?: run {
             logger.warn("账户不存在: accountId=${strategy.accountId}")
-            saveTriggerRecord(strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, BigDecimal.ZERO, null, "fail", "账户不存在")
+            saveTriggerRecord(
+                strategy,
+                periodStartUnix,
+                marketTitle,
+                outcomeIndex,
+                triggerPrice,
+                BigDecimal.ZERO,
+                null,
+                "fail",
+                "账户不存在"
+            )
             return
         }
         if (account.apiKey == null || account.apiSecret == null || account.apiPassphrase == null) {
             logger.warn("账户未配置 API 凭证: accountId=${account.id}")
-            saveTriggerRecord(strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, BigDecimal.ZERO, null, "fail", "账户未配置API凭证")
+            saveTriggerRecord(
+                strategy,
+                periodStartUnix,
+                marketTitle,
+                outcomeIndex,
+                triggerPrice,
+                BigDecimal.ZERO,
+                null,
+                "fail",
+                "账户未配置API凭证"
+            )
             return
         }
 
@@ -417,12 +519,32 @@ class CryptoTailStrategyExecutionService(
             else -> strategy.amountValue
         }
         if (amountUsdc < BigDecimal("1")) {
-            saveTriggerRecord(strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, amountUsdc, null, "fail", "投入金额不足")
+            saveTriggerRecord(
+                strategy,
+                periodStartUnix,
+                marketTitle,
+                outcomeIndex,
+                triggerPrice,
+                amountUsdc,
+                null,
+                "fail",
+                "投入金额不足"
+            )
             return
         }
 
         val tokenId = tokenIds.getOrNull(outcomeIndex) ?: run {
-            saveTriggerRecord(strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, amountUsdc, null, "fail", "tokenIds 越界")
+            saveTriggerRecord(
+                strategy,
+                periodStartUnix,
+                marketTitle,
+                outcomeIndex,
+                triggerPrice,
+                amountUsdc,
+                null,
+                "fail",
+                "tokenIds 越界"
+            )
             return
         }
 
@@ -441,16 +563,30 @@ class CryptoTailStrategyExecutionService(
             cryptoUtils.decrypt(account.privateKey) ?: ""
         } catch (e: Exception) {
             logger.error("解密私钥失败: accountId=${account.id}", e)
-            saveTriggerRecord(strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, amountUsdc, null, "fail", "解密私钥失败")
+            saveTriggerRecord(
+                strategy,
+                periodStartUnix,
+                marketTitle,
+                outcomeIndex,
+                triggerPrice,
+                amountUsdc,
+                null,
+                "fail",
+                "解密私钥失败"
+            )
             return
         }
         val apiSecret = try {
-            account.apiSecret?.let { cryptoUtils.decrypt(it) } ?: ""
-        } catch (e: Exception) { "" }
+            account.apiSecret.let { cryptoUtils.decrypt(it) }
+        } catch (e: Exception) {
+            ""
+        }
         val apiPassphrase = try {
-            account.apiPassphrase?.let { cryptoUtils.decrypt(it) } ?: ""
-        } catch (e: Exception) { "" }
-        val clobApi = retrofitFactory.createClobApi(account.apiKey!!, apiSecret, apiPassphrase, account.walletAddress)
+            account.apiPassphrase.let { cryptoUtils.decrypt(it) }
+        } catch (e: Exception) {
+            ""
+        }
+        val clobApi = retrofitFactory.createClobApi(account.apiKey, apiSecret, apiPassphrase, account.walletAddress)
         val feeRateBps = clobService.getFeeRate(tokenId).getOrNull()?.toString() ?: "0"
         val signatureType = orderSigningService.getSignatureTypeForWalletType(account.walletType)
 
@@ -472,7 +608,16 @@ class CryptoTailStrategyExecutionService(
             orderType = "FAK",
             deferExec = false
         )
-        submitOrderAndSaveRecord(clobApi, strategy, periodStartUnix, marketTitle, outcomeIndex, triggerPrice, amountUsdc, orderRequest)
+        submitOrderAndSaveRecord(
+            clobApi,
+            strategy,
+            periodStartUnix,
+            marketTitle,
+            outcomeIndex,
+            triggerPrice,
+            amountUsdc,
+            orderRequest
+        )
     }
 
     private suspend fun fetchEventBySlug(slug: String): Result<GammaEventBySlugResponse> {
@@ -527,6 +672,6 @@ class CryptoTailStrategyExecutionService(
         periodContextCache.clear()
         // 清理所有锁，避免内存泄漏
         triggerMutexMap.clear()
-        logger.debug("尾盘策略执行服务已清理缓存和锁")
+        logger.debug("加密价差策略执行服务已清理缓存和锁")
     }
 }
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailStrategyService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailStrategyService.kt
index 2d9eafc..aaac15f 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailStrategyService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/cryptotail/CryptoTailStrategyService.kt
@@ -104,7 +104,7 @@ class CryptoTailStrategyService(
         } catch (e: IllegalArgumentException) {
             Result.failure(e)
         } catch (e: Exception) {
-            logger.error("创建尾盘策略失败: ${e.message}", e)
+            logger.error("创建加密价差策略失败: ${e.message}", e)
             Result.failure(e)
         }
     }
@@ -179,7 +179,7 @@ class CryptoTailStrategyService(
         } catch (e: IllegalArgumentException) {
             Result.failure(e)
         } catch (e: Exception) {
-            logger.error("更新尾盘策略失败: ${e.message}", e)
+            logger.error("更新加密价差策略失败: ${e.message}", e)
             Result.failure(e)
         }
     }
@@ -194,7 +194,7 @@ class CryptoTailStrategyService(
             eventPublisher.publishEvent(CryptoTailStrategyChangedEvent(this))
             Result.success(Unit)
         } catch (e: Exception) {
-            logger.error("删除尾盘策略失败: ${e.message}", e)
+            logger.error("删除加密价差策略失败: ${e.message}", e)
             Result.failure(e)
         }
     }
@@ -215,7 +215,7 @@ class CryptoTailStrategyService(
             val dtos = list.map { entityToDto(it, lastTriggerMap[it.id]) }
             Result.success(CryptoTailStrategyListResponse(list = dtos))
         } catch (e: Exception) {
-            logger.error("查询尾盘策略列表失败: ${e.message}", e)
+            logger.error("查询加密价差策略列表失败: ${e.message}", e)
             Result.failure(e)
         }
     }
@@ -263,7 +263,7 @@ class CryptoTailStrategyService(
     private fun generateStrategyName(marketSlugPrefix: String): String {
         val suffix = Instant.now().atZone(ZoneId.systemDefault())
             .format(DateTimeFormatter.ofPattern("yyyyMMddHHmmss"))
-        return "尾盘策略-${marketSlugPrefix}-$suffix"
+        return "加密价差策略-${marketSlugPrefix}-$suffix"
     }
 
     private fun entityToDto(e: CryptoTailStrategy, lastTriggerAt: Long?): CryptoTailStrategyDto {
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/system/ApiHealthCheckService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/system/ApiHealthCheckService.kt
index 426c8b2..2afc61f 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/system/ApiHealthCheckService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/system/ApiHealthCheckService.kt
@@ -250,7 +250,7 @@ class ApiHealthCheckService(
                     name = "币安 WebSocket",
                     url = binanceWsUrl,
                     status = "success",
-                    message = "无尾盘策略，未订阅"
+                    message = "无加密价差策略，未订阅"
                 )
             } else if (connected > 0) {
                 val which = statuses.filter { it.value }.keys.joinToString("、")
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/system/TelegramNotificationService.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/system/TelegramNotificationService.kt
index 46ca2e7..49dba41 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/service/system/TelegramNotificationService.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/service/system/TelegramNotificationService.kt
@@ -304,7 +304,7 @@ class TelegramNotificationService(
     }
 
     /**
-     * 发送尾盘策略下单成功通知（与跟单一致：在收到 WS 订单推送时匹配尾盘订单后调用）
+     * 发送加密价差策略下单成功通知（与跟单一致：在收到 WS 订单推送时匹配价差策略订单后调用）
      */
     suspend fun sendCryptoTailOrderSuccessNotification(
         orderId: String?,
@@ -324,7 +324,7 @@ class TelegramNotificationService(
         if (orderId != null) {
             val lastSentTime = sentOrderIds[orderId]
             if (lastSentTime != null && System.currentTimeMillis() - lastSentTime < 5 * 60 * 1000) {
-                logger.info("尾盘订单通知已发送过（5分钟内），跳过: orderId=$orderId")
+                logger.info("加密价差策略订单通知已发送过（5分钟内），跳过: orderId=$orderId")
                 return
             }
             sentOrderIds[orderId] = System.currentTimeMillis()
@@ -894,7 +894,7 @@ class TelegramNotificationService(
     }
 
     /**
-     * 构建尾盘策略下单成功消息（与订单成功格式一致，增加「尾盘策略」标题与策略名）
+     * 构建加密价差策略下单成功消息（与订单成功格式一致，增加「加密价差策略」标题与策略名）
      */
     private fun buildCryptoTailOrderSuccessMessage(
         orderId: String?,
@@ -912,7 +912,7 @@ class TelegramNotificationService(
         locale: java.util.Locale,
         orderTime: Long?
     ): String {
-        val tailOrderSuccess = messageSource.getMessage("notification.tail.order.success", null, "尾盘策略下单成功", locale)
+        val tailOrderSuccess = messageSource.getMessage("notification.tail.order.success", null, "加密价差策略下单成功", locale)
         val strategyLabel = messageSource.getMessage("notification.tail.strategy", null, "策略", locale)
         val orderInfo = messageSource.getMessage("notification.order.info", null, "订单信息", locale)
         val orderIdLabel = messageSource.getMessage("notification.order.id", null, "订单ID", locale)
diff --git a/backend/src/main/kotlin/com/wrbug/polymarketbot/websocket/UnifiedWebSocketHandler.kt b/backend/src/main/kotlin/com/wrbug/polymarketbot/websocket/UnifiedWebSocketHandler.kt
index d002764..b37e8de 100644
--- a/backend/src/main/kotlin/com/wrbug/polymarketbot/websocket/UnifiedWebSocketHandler.kt
+++ b/backend/src/main/kotlin/com/wrbug/polymarketbot/websocket/UnifiedWebSocketHandler.kt
@@ -193,7 +193,7 @@ class UnifiedWebSocketHandler(
             lastActivityTime.remove(sessionId)
             sessionLocks.remove(sessionId)  // 清理同步锁
             subscriptionService.unregisterSession(sessionId)
-            
+
             if (session != null && session.isOpen) {
                 try {
                     session.close(CloseStatus.NORMAL)
@@ -201,7 +201,6 @@ class UnifiedWebSocketHandler(
                     // 忽略关闭时的异常
                 }
             }
-            
         } catch (e: Exception) {
             logger.error("清理 WebSocket 资源时发生错误: $sessionId, ${e.message}", e)
         }
diff --git a/backend/src/main/resources/i18n/messages_en.properties b/backend/src/main/resources/i18n/messages_en.properties
index 484dd47..3cebc68 100644
--- a/backend/src/main/resources/i18n/messages_en.properties
+++ b/backend/src/main/resources/i18n/messages_en.properties
@@ -16,7 +16,7 @@ notification.order.time=Time
 notification.order.error_info=Error Information
 notification.order.unknown_account=Unknown Account
 notification.order.calculate_failed=Calculation Failed
-notification.tail.order.success=Tail Session Order Success
+notification.tail.order.success=Crypto spread strategy order success
 notification.tail.strategy=Strategy
 notification.redeem.success=Position Redeemed Successfully
 notification.redeem.info=Redeem Information
@@ -277,16 +277,16 @@ error.server.backtest_stop_failed=Failed to stop backtest task
 error.server.backtest_retry_failed=Failed to retry backtest task
 error.server.backtest_rerun_failed=Failed to re-run backtest with same config
 
-# Crypto tail strategy
-error.crypto_tail_strategy_not_found=Crypto tail strategy not found
+# Crypto spread strategy
+error.crypto_tail_strategy_not_found=Crypto spread strategy not found
 error.crypto_tail_strategy_window_invalid=Window start must not be greater than window end
 error.crypto_tail_strategy_window_exceed=Time window must not exceed period length
 error.crypto_tail_strategy_interval_invalid=Interval must be 300 or 900 seconds
 error.crypto_tail_strategy_amount_mode_invalid=Amount mode must be RATIO or FIXED
-error.server.crypto_tail_strategy_create_failed=Failed to create crypto tail strategy
-error.server.crypto_tail_strategy_update_failed=Failed to update crypto tail strategy
-error.server.crypto_tail_strategy_delete_failed=Failed to delete crypto tail strategy
-error.server.crypto_tail_strategy_list_fetch_failed=Failed to fetch crypto tail strategy list
+error.server.crypto_tail_strategy_create_failed=Failed to create crypto spread strategy
+error.server.crypto_tail_strategy_update_failed=Failed to update crypto spread strategy
+error.server.crypto_tail_strategy_delete_failed=Failed to delete crypto spread strategy
+error.server.crypto_tail_strategy_list_fetch_failed=Failed to fetch crypto spread strategy list
 error.server.crypto_tail_strategy_triggers_fetch_failed=Failed to fetch trigger records
 # Backtest Management
 backtest.title=Backtest Management
diff --git a/backend/src/main/resources/i18n/messages_zh_CN.properties b/backend/src/main/resources/i18n/messages_zh_CN.properties
index c3c9d6c..8d9d961 100644
--- a/backend/src/main/resources/i18n/messages_zh_CN.properties
+++ b/backend/src/main/resources/i18n/messages_zh_CN.properties
@@ -16,7 +16,7 @@ notification.order.time=时间
 notification.order.error_info=错误信息
 notification.order.unknown_account=未知账户
 notification.order.calculate_failed=计算失败
-notification.tail.order.success=尾盘策略下单成功
+notification.tail.order.success=加密价差策略下单成功
 notification.tail.strategy=策略
 notification.redeem.success=仓位赎回成功
 notification.redeem.info=赎回信息
@@ -277,16 +277,16 @@ error.server.backtest_stop_failed=停止回测任务失败
 error.server.backtest_retry_failed=重试回测任务失败
 error.server.backtest_rerun_failed=按配置重新测试失败
 
-# 尾盘策略
-error.crypto_tail_strategy_not_found=尾盘策略不存在
+# 加密价差策略
+error.crypto_tail_strategy_not_found=加密价差策略不存在
 error.crypto_tail_strategy_window_invalid=时间区间开始不能大于结束
 error.crypto_tail_strategy_window_exceed=时间区间不能超过周期长度
 error.crypto_tail_strategy_interval_invalid=周期仅支持 300 或 900 秒
 error.crypto_tail_strategy_amount_mode_invalid=投入方式仅支持 RATIO 或 FIXED
-error.server.crypto_tail_strategy_create_failed=创建尾盘策略失败
-error.server.crypto_tail_strategy_update_failed=更新尾盘策略失败
-error.server.crypto_tail_strategy_delete_failed=删除尾盘策略失败
-error.server.crypto_tail_strategy_list_fetch_failed=查询尾盘策略列表失败
+error.server.crypto_tail_strategy_create_failed=创建加密价差策略失败
+error.server.crypto_tail_strategy_update_failed=更新加密价差策略失败
+error.server.crypto_tail_strategy_delete_failed=删除加密价差策略失败
+error.server.crypto_tail_strategy_list_fetch_failed=查询加密价差策略列表失败
 error.server.crypto_tail_strategy_triggers_fetch_failed=查询触发记录失败
 # 回测管理
 backtest.title=回测管理
diff --git a/backend/src/main/resources/i18n/messages_zh_TW.properties b/backend/src/main/resources/i18n/messages_zh_TW.properties
index 0547847..5d06e6c 100644
--- a/backend/src/main/resources/i18n/messages_zh_TW.properties
+++ b/backend/src/main/resources/i18n/messages_zh_TW.properties
@@ -16,7 +16,7 @@ notification.order.time=時間
 notification.order.error_info=錯誤信息
 notification.order.unknown_account=未知賬戶
 notification.order.calculate_failed=計算失敗
-notification.tail.order.success=尾盤策略下單成功
+notification.tail.order.success=加密價差策略下單成功
 notification.tail.strategy=策略
 notification.redeem.success=倉位贖回成功
 notification.redeem.info=贖回信息
@@ -277,16 +277,16 @@ error.server.backtest_stop_failed=停止回測任務失敗
 error.server.backtest_retry_failed=重試回測任務失敗
 error.server.backtest_rerun_failed=依配置重新測試失敗
 
-# 尾盤策略
-error.crypto_tail_strategy_not_found=尾盤策略不存在
+# 加密價差策略
+error.crypto_tail_strategy_not_found=加密價差策略不存在
 error.crypto_tail_strategy_window_invalid=時間區間開始不能大於結束
 error.crypto_tail_strategy_window_exceed=時間區間不能超過週期長度
 error.crypto_tail_strategy_interval_invalid=週期僅支援 300 或 900 秒
 error.crypto_tail_strategy_amount_mode_invalid=投入方式僅支援 RATIO 或 FIXED
-error.server.crypto_tail_strategy_create_failed=創建尾盤策略失敗
-error.server.crypto_tail_strategy_update_failed=更新尾盤策略失敗
-error.server.crypto_tail_strategy_delete_failed=刪除尾盤策略失敗
-error.server.crypto_tail_strategy_list_fetch_failed=查詢尾盤策略列表失敗
+error.server.crypto_tail_strategy_create_failed=創建加密價差策略失敗
+error.server.crypto_tail_strategy_update_failed=更新加密價差策略失敗
+error.server.crypto_tail_strategy_delete_failed=刪除加密價差策略失敗
+error.server.crypto_tail_strategy_list_fetch_failed=查詢加密價差策略列表失敗
 error.server.crypto_tail_strategy_triggers_fetch_failed=查詢觸發記錄失敗
 # 回測管理
 backtest.title=回測管理
diff --git a/docs/crypto-tail-strategy/README.md b/docs/crypto-tail-strategy/README.md
index 0d3c267..9807931 100644
--- a/docs/crypto-tail-strategy/README.md
+++ b/docs/crypto-tail-strategy/README.md
@@ -1,6 +1,6 @@
-# 尾盘策略文档 (Crypto Tail Strategy)
+# 加密价差策略文档 (Crypto Spread Strategy)
 
-本目录集中存放与 Polymarket 加密市场尾盘策略相关的文档。
+本目录集中存放与 Polymarket 加密市场加密价差策略相关的文档。
 
 ## 目录结构
 
diff --git a/docs/crypto-tail-strategy/crypto-tail-auto-spread-dynamic-coefficient.md b/docs/crypto-tail-strategy/crypto-tail-auto-spread-dynamic-coefficient.md
index f9a1f30..9dcf815 100644
--- a/docs/crypto-tail-strategy/crypto-tail-auto-spread-dynamic-coefficient.md
+++ b/docs/crypto-tail-strategy/crypto-tail-auto-spread-dynamic-coefficient.md
@@ -55,7 +55,7 @@ effectiveMinSpread = baseSpread × coefficient
 
 - 需要策略的 `windowStartSeconds`、`windowEndSeconds` 传入计算处；若窗口长度为 0，可退化为系数 = 1.0 或 0.5（需约定）。
 
-**优点**：与「尾盘只在窗口内触发」一致，时间语义清晰；毫秒级 progress 更精确。  
+**优点**：与「加密价差策略只在窗口内触发」一致，时间语义清晰；毫秒级 progress 更精确。  
 **缺点**：`getAutoMinSpread` 需要增加当前时间（毫秒）和窗口参数（或传整个 strategy）。
 
 ---
diff --git a/docs/crypto-tail-strategy/en/crypto-tail-strategy-user-guide.md b/docs/crypto-tail-strategy/en/crypto-tail-strategy-user-guide.md
index afa5ccc..066f48f 100644
--- a/docs/crypto-tail-strategy/en/crypto-tail-strategy-user-guide.md
+++ b/docs/crypto-tail-strategy/en/crypto-tail-strategy-user-guide.md
@@ -1,8 +1,8 @@
-# Crypto Tail Strategy Configuration Guide
+# Crypto Spread Strategy Configuration Guide
 
-## Part 1: What is Crypto Tail Strategy?
+## Part 1: What is Crypto Spread Strategy?
 
-Crypto Tail Strategy is an automated trading strategy designed specifically for Polymarket crypto markets' **5-minute** or **15-minute** "Up or Down" markets.
+Crypto Spread Strategy is an automated trading strategy designed specifically for Polymarket crypto markets' **5-minute** or **15-minute** "Up or Down" markets.
 
 **Core Logic**: Within a specified time window, when the market price enters your set price range, the system will automatically buy at a fixed price (0.99) without manual operation.
 
@@ -39,7 +39,7 @@ Cycle Start → Within Time Window → Price Enters Range → Auto Order
 
 - **Maximum one trigger per cycle**: Within the same cycle, even if conditions are met multiple times, only one order is placed
 - **Fixed order price**: All orders are submitted at price 0.99
-- **Requires separate wallet**: It's recommended to use a dedicated wallet for tail strategies to avoid conflicts with other operations (manual trading, copy trading, etc.)
+- **Requires separate wallet**: It's recommended to use a dedicated wallet for crypto spread strategies to avoid conflicts with other operations (manual trading, copy trading, etc.)
 
 ---
 
@@ -50,7 +50,7 @@ Cycle Start → Within Time Window → Price Enters Range → Auto Order
 | Parameter | Description | Required | Example |
 |-----------|-------------|----------|---------|
 | **Account** | Select the wallet account for trading | ✅ | Account A |
-| **Strategy Name** | Name your strategy for easy identification | ❌ | "BTC 15min Tail Strategy" |
+| **Strategy Name** | Name your strategy for easy identification | ❌ | "BTC 15min Crypto Spread Strategy" |
 | **Market** | Select the market to trade (5-minute or 15-minute) | ✅ | btc-updown-15m |
 
 ### 3.2 Cycle Settings
@@ -341,7 +341,7 @@ Enabled: On
 2. **Position conflicts**: Manual trading and strategy trading may conflict
 3. **Management confusion**: Difficult to distinguish which orders are from strategy vs manual
 
-**Recommendation**: Create a dedicated wallet, only for tail strategies.
+**Recommendation**: Create a dedicated wallet, only for crypto spread strategies.
 
 ### Q7: Why is the order price fixed at 0.99?
 
@@ -352,7 +352,7 @@ Enabled: On
 
 ### Q8: Does the strategy depend on auto-redeem functionality?
 
-**A**: Yes, tail strategy depends on auto-redeem functionality.
+**A**: Yes, crypto spread strategy depends on auto-redeem functionality.
 
 **Reasons**:
 - Strategy orders create positions after execution
@@ -411,7 +411,7 @@ Enabled: On
 
 ### 7.1 View Strategy List
 
-On the "Crypto Tail Strategy" page, you can view all strategies:
+On the "Crypto Spread Strategy" page, you can view all strategies:
 - Strategy name
 - Market information
 - Time window
@@ -453,7 +453,7 @@ After deleting a strategy:
 
 ## Part 8: Summary
 
-Crypto Tail Strategy is a powerful automated trading tool that can help you:
+Crypto Spread Strategy is a powerful automated trading tool that can help you:
 
 1. **Automated Trading**: No need for manual monitoring, system executes automatically
 2. **Precise Control**: Precisely control trigger conditions through time windows and price ranges
diff --git a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-flow.md b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-flow.md
index 789de21..91b9e2d 100644
--- a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-flow.md
+++ b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-flow.md
@@ -1,4 +1,4 @@
-# 加密市场尾盘策略 - 流程图
+# 加密价差策略 - 流程图
 
 ## 一、整体架构
 
diff --git a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-market-data.md b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-market-data.md
index fb96d9f..67ec78d 100644
--- a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-market-data.md
+++ b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-market-data.md
@@ -1,4 +1,4 @@
-# 加密市场尾盘策略 - 5/15 分钟市场数据获取说明
+# 加密价差策略 - 5/15 分钟市场数据获取说明
 
 > 前端 UI 与交互详见 `crypto-tail-strategy-ui-spec.md`。
 
diff --git a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-min-spread-flow.md b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-min-spread-flow.md
index c4f9f3f..f0d61e3 100644
--- a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-min-spread-flow.md
+++ b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-min-spread-flow.md
@@ -1,8 +1,8 @@
-# 尾盘策略 - 最小价差参数流程分析
+# 加密价差策略 - 最小价差参数流程分析
 
 ## 一、需求摘要
 
-在现有尾盘策略上增加**最小价差**参数：当策略条件（时间窗、价格区间）满足时，再判断**当前周期 Binance K 线的开盘价与收盘价价差**是否满足最小价差；满足才下单，不满足则等待，直到价差满足再下单。
+在现有加密价差策略上增加**最小价差**参数：当策略条件（时间窗、价格区间）满足时，再判断**当前周期 Binance K 线的开盘价与收盘价价差**是否满足最小价差；满足才下单，不满足则等待，直到价差满足再下单。
 
 - **后端**：需订阅币安对应币对（如 BTC/USDC）的 K 线，维护当前周期的**开盘价**与**实时收盘价**，并在触发时做价差校验。
 - **前端**：可配置三种场景——无、固定、自动（见下）。
@@ -244,4 +244,4 @@ sequenceDiagram
 3. **下单与去重**  
    - 仍保持「每周期最多触发一次」；价差不满足时不写触发记录，直到某次同时满足价格与价差后才下单并写记录。
 
-按上述流程即可在现有尾盘策略上接入「最小价差」参数，并由后端订阅币安 K 线、在触发前做价差校验；固定与自动的时序差异见**第六节时序图**。
+按上述流程即可在现有加密价差策略上接入「最小价差」参数，并由后端订阅币安 K 线、在触发前做价差校验；固定与自动的时序差异见**第六节时序图**。
diff --git a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-tasks.md b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-tasks.md
index c2f3ebc..945ac50 100644
--- a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-tasks.md
+++ b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-tasks.md
@@ -1,4 +1,4 @@
-# 加密市场尾盘策略 - 任务梳理
+# 加密价差策略 - 任务梳理
 
 > 需求与 UI 见 `crypto-tail-strategy-ui-spec.md`，市场数据与执行规则见 `crypto-tail-strategy-market-data.md`。
 
@@ -66,7 +66,7 @@
 
 | 序号 | 任务 | 说明 |
 |------|------|------|
-| B16 | 自动赎回包含尾盘策略仓位 | 尾盘策略产生的仓位与跟单/手动一视同仁，纳入现有自动赎回逻辑，不排除（见 UI 规格附录 A）。 |
+| B16 | 自动赎回包含加密价差策略仓位 | 加密价差策略产生的仓位与跟单/手动一视同仁，纳入现有自动赎回逻辑，不排除（见 UI 规格附录 A）。 |
 | B17 | 调度/定时或常驻 | 对已启用策略按周期（如每 10–30 秒）检查：当前周期、是否在时间窗口内、是否已触发、价格是否进区间；满足则执行下单并写触发记录。 |
 
 ---
@@ -78,7 +78,7 @@
 | 序号 | 任务 | 说明 |
 |------|------|------|
 | F1 | 路由 | App.tsx 增加 `/crypto-tail-strategy`、可选 `/crypto-tail-strategy/records/:id`。 |
-| F2 | 菜单 | Layout 中增加「尾盘策略」菜单项，与跟单同级或在其下；key 与路由一致。 |
+| F2 | 菜单 | Layout 中增加「加密价差策略」菜单项，与跟单同级或在其下；key 与路由一致。 |
 
 ### 4.2 列表页
 
@@ -146,5 +146,5 @@ F10 触发记录
 - **时间区间**：仅当周期内当前时间落在 [windowStartSeconds, windowEndSeconds] 时才判断价格并下单；前端区间开始 ≤ 结束，且不超出 5min/15min。
 - **每周期一次**：同一策略同一周期只触发一次（先满足价格的 outcome 买入，反方向不买）。
 - **重试**：下单失败最多重试 2 次，共 3 次；仍失败记入触发记录为失败。
-- **自动赎回**：尾盘策略产生的仓位可被自动赎回，无排除逻辑。
+- **自动赎回**：加密价差策略产生的仓位可被自动赎回，无排除逻辑。
 - **创建前检查**：未配置自动赎回时点击新增策略弹出「去配置」弹窗，不打开表单。
diff --git a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-ui-spec.md b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-ui-spec.md
index bf66e43..0e85e57 100644
--- a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-ui-spec.md
+++ b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-ui-spec.md
@@ -1,4 +1,4 @@
-# 加密市场尾盘策略 - 前端 UI 规格
+# 加密价差策略 - 前端 UI 规格
 
 > 周期推导与市场数据获取详见 `crypto-tail-strategy-market-data.md`。
 
@@ -10,7 +10,7 @@
 
 | 项目 | 说明 |
 |------|------|
-| **菜单** | 在「跟单管理」同级或其下增加一项，如「尾盘策略」，key 建议 `/crypto-tail-strategy`。 |
+| **菜单** | 在「跟单管理」同级或其下增加一项，如「加密价差策略」，key 建议 `/crypto-tail-strategy`。 |
 | **路由** | 列表页 `/crypto-tail-strategy`；可选详情/触发记录 `/crypto-tail-strategy/records/:id`。 |
 
 参考：`Layout.tsx` 中 `/copy-trading`、`/backtest` 的配置；`App.tsx` 中对应 `Route`。
@@ -26,7 +26,7 @@
 
 | 元素 | 类型 | 说明 |
 |------|------|------|
-| 页面标题 | 标题文案 | 如「加密尾盘策略」，用 `t('cryptoTailStrategy.list.title')`。 |
+| 页面标题 | 标题文案 | 如「加密价差策略」，用 `t('cryptoTailStrategy.list.title')`。 |
 | **钱包使用提示** | **Alert（Warning）** | **必须**在页面顶部或标题下方展示：提示用户**使用单独/专用钱包**运行本策略，避免该钱包用于手动交易、跟单等其他操作，否则可能导致余额或仓位变化，进而造成策略执行异常（如余额不足、下单失败等）。文案走多语言 `t('cryptoTailStrategy.list.walletTip')`，可带 `showIcon`。 |
 | 新增策略 | Button（Primary） | 点击时**先检查自动赎回相关配置**（见 2.4）；若未配置则弹出「去配置」简易弹窗，若已配置则打开「新增策略」表单弹窗。图标可用 `PlusOutlined`。 |
 | 筛选（可选） | Select / 筛选项 | 按账户、启用状态筛选；移动端可收起到抽屉或折叠。 |
@@ -59,7 +59,7 @@
 1. **检查**：请求系统配置（如 `apiService.systemConfig.getConfig()` 或已有接口），判断是否已配置 Builder API Key（及可选：自动赎回已开启）。若 `builderApiKeyConfigured === false`（或后端约定之「未配置」状态），视为未配置。
 2. **未配置时**：不打开新增策略表单，改为弹出**简易弹窗**（Modal），内容建议：
    - **标题**：如「请先配置自动赎回」，`t('cryptoTailStrategy.redeemRequiredModal.title')`。
-   - **正文**：简短说明尾盘策略依赖自动赎回，需要先在「系统设置」中配置 Builder API Key 及自动赎回。文案 `t('cryptoTailStrategy.redeemRequiredModal.description')`。
+   - **正文**：简短说明加密价差策略依赖自动赎回，需要先在「系统设置」中配置 Builder API Key 及自动赎回。文案 `t('cryptoTailStrategy.redeemRequiredModal.description')`。
    - **操作**：
      - **去配置**：主按钮，点击后关闭弹窗并跳转到系统设置页（如 `/system-settings`，该页含 Relayer 配置与自动赎回开关）。
      - **取消**：次按钮或关闭图标，仅关闭弹窗。
@@ -133,7 +133,7 @@
 |------|------|
 | **钱包提示** | 列表页与新增/编辑表单**必须**包含「使用单独钱包」的 Alert 提示，避免用户用混用钱包导致异常；文案走多语言。 |
 | **创建前检查** | 点击「新增策略」时先检查自动赎回/Builder API 是否已配置；未配置则弹出简易「去配置」弹窗，引导用户到系统设置配置 API Key 与自动赎回，不打开策略表单。 |
-| 多语言 | 所有文案 `t('cryptoTailStrategy.xxx')`，在 `locales/zh-CN`、`zh-TW`、`en` 的 `common.json` 中增加键。需包含：`cryptoTailStrategy.list.walletTip`、`cryptoTailStrategy.form.walletTip`，以及 `cryptoTailStrategy.redeemRequiredModal.title`、`cryptoTailStrategy.redeemRequiredModal.description`、`cryptoTailStrategy.redeemRequiredModal.goToSettings`、`cryptoTailStrategy.redeemRequiredModal.cancel`。文案示例：列表页 `walletTip`：「请使用单独的钱包运行尾盘策略，避免该钱包用于手动交易、跟单等其他操作，否则可能导致余额或仓位变化，造成策略执行异常。」表单内 `walletTip`：「建议使用专用钱包，避免手动操作等导致余额或下单异常。」未配置赎回弹窗 `title`：「请先配置自动赎回」；`description`：「尾盘策略依赖自动赎回功能，请先在系统设置中配置 Builder API Key 并开启自动赎回。」；`goToSettings`：「去配置」；`cancel`：「取消」。 |
+| 多语言 | 所有文案 `t('cryptoTailStrategy.xxx')`，在 `locales/zh-CN`、`zh-TW`、`en` 的 `common.json` 中增加键。需包含：`cryptoTailStrategy.list.walletTip`、`cryptoTailStrategy.form.walletTip`，以及 `cryptoTailStrategy.redeemRequiredModal.title`、`cryptoTailStrategy.redeemRequiredModal.description`、`cryptoTailStrategy.redeemRequiredModal.goToSettings`、`cryptoTailStrategy.redeemRequiredModal.cancel`。文案示例：列表页 `walletTip`：「请使用单独的钱包运行加密价差策略，避免该钱包用于手动交易、跟单等其他操作，否则可能导致余额或仓位变化，造成策略执行异常。」表单内 `walletTip`：「建议使用专用钱包，避免手动操作等导致余额或下单异常。」未配置赎回弹窗 `title`：「请先配置自动赎回」；`description`：「加密价差策略依赖自动赎回功能，请先在系统设置中配置 Builder API Key 并开启自动赎回。」；`goToSettings`：「去配置」；`cancel`：「取消」。 |
 | 金额 | 统一 `formatUSDC`（见 frontend.mdc）。 |
 | 响应式 | `useMediaQuery`；按钮触摸目标 ≥ 44px；移动端主操作突出。 |
 | 类型 | 不用 `any`；为策略、触发记录定义 TypeScript 类型。 |
@@ -150,7 +150,7 @@
 | 新增/编辑弹窗 | `frontend/src/pages/CryptoTailStrategyList/FormModal.tsx` 或内嵌 Modal |
 | 触发记录 | `frontend/src/pages/CryptoTailStrategyList/TriggerRecordsModal.tsx` 或 `CryptoTailStrategyRecords.tsx` |
 | 路由 | `App.tsx` 中 `/crypto-tail-strategy`、可选 `/crypto-tail-strategy/records/:id` |
-| 菜单 | `Layout.tsx` 中增加「尾盘策略」菜单项 |
+| 菜单 | `Layout.tsx` 中增加「加密价差策略」菜单项 |
 | 类型 | `frontend/src/types/index.ts` 或 `types/cryptoTailStrategy.ts` 中增加策略与触发记录类型 |
 | 多语言 | `frontend/src/locales/{zh-CN,zh-TW,en}/common.json` 中增加 `cryptoTailStrategy.*` |
 
@@ -158,7 +158,7 @@
 
 ## 7. 小结：UI 包含的主要元素
 
-- **导航**：主导航中「尾盘策略」入口。
+- **导航**：主导航中「加密价差策略」入口。
 - **列表页**：标题、钱包提示 Alert、新增按钮（点击前先检查赎回配置，未配置则弹「去配置」简易弹窗）、筛选、表格/卡片（策略名、市场、价格区间、投入方式、状态、最近触发、操作）、加载与空状态。
 - **未配置赎回弹窗**：简易 Modal，提示依赖自动赎回、需先配置 Builder API Key 与自动赎回；按钮「去配置」（跳转 `/system-settings`）、「取消」。
 - **表单弹窗**：策略名、账户、市场选择、minPrice/maxPrice、投入方式（比例/固定）、启用开关、提交/取消。
@@ -169,9 +169,9 @@
 
 ## 附录 A 后端/产品要求：自动赎回须支持本策略仓位
 
-自动赎回逻辑**必须支持赎回由尾盘策略产生的订单所对应的仓位**。即：本策略触发的市价买入会形成仓位，这些仓位在满足「可赎回」条件时，应被纳入现有自动赎回流程并正常发起赎回，不得因来源为「尾盘策略」而被排除。后端实现时需保证：
+自动赎回逻辑**必须支持赎回由加密价差策略产生的订单所对应的仓位**。即：本策略触发的市价买入会形成仓位，这些仓位在满足「可赎回」条件时，应被纳入现有自动赎回流程并正常发起赎回，不得因来源为「加密价差策略」而被排除。后端实现时需保证：
 
-- 尾盘策略下单产生的仓位，与跟单/手动下单等来源的仓位一视同仁，参与可赎回查询与批量赎回；
-- 若当前自动赎回按账户或仓位类型过滤，需将「尾盘策略订单产生的仓位」包含在内。
+- 加密价差策略下单产生的仓位，与跟单/手动下单等来源的仓位一视同仁，参与可赎回查询与批量赎回；
+- 若当前自动赎回按账户或仓位类型过滤，需将「加密价差策略订单产生的仓位」包含在内。
 
 这样前端所依赖的「自动赎回」对该策略才完整有效。
diff --git a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-user-guide.md b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-user-guide.md
index b4eac4e..4998d2e 100644
--- a/docs/crypto-tail-strategy/zh/crypto-tail-strategy-user-guide.md
+++ b/docs/crypto-tail-strategy/zh/crypto-tail-strategy-user-guide.md
@@ -1,8 +1,8 @@
-# 尾盘策略配置指南
+# 加密价差策略配置指南
 
-## 一、什么是尾盘策略？
+## 一、什么是加密价差策略？
 
-尾盘策略是一种自动化交易策略，专门用于 Polymarket 加密市场的 **5分钟** 或 **15分钟** "Up or Down" 市场。
+加密价差策略是一种自动化交易策略，专门用于 Polymarket 加密市场的 **5分钟** 或 **15分钟** "Up or Down" 市场。
 
 **核心逻辑**：在指定时间窗口内，当市场价格进入您设定的价格区间时，系统会自动以固定价格（0.99）买入，无需手动操作。
 
@@ -39,7 +39,7 @@
 
 - **每周期最多触发一次**：同一个周期内，即使多次满足条件，也只下单一次
 - **固定下单价格**：所有订单都以 0.99 的价格提交
-- **需要单独钱包**：建议使用专门的钱包运行尾盘策略，避免与其他操作（手动交易、跟单等）冲突
+- **需要单独钱包**：建议使用专门的钱包运行加密价差策略，避免与其他操作（手动交易、跟单等）冲突
 
 ---
 
@@ -50,7 +50,7 @@
 | 参数 | 说明 | 必填 | 示例 |
 |------|------|------|------|
 | **账户** | 选择用于交易的钱包账户 | ✅ | 账户A |
-| **策略名称** | 给策略起个名字，方便识别 | ❌ | "BTC 15分钟尾盘策略" |
+| **策略名称** | 给策略起个名字，方便识别 | ❌ | "BTC 15分钟加密价差策略" |
 | **市场** | 选择要交易的市场（5分钟或15分钟） | ✅ | btc-updown-15m |
 
 ### 3.2 周期设置
@@ -341,7 +341,7 @@
 2. **仓位冲突**：手动交易和策略交易可能产生冲突
 3. **管理混乱**：难以区分哪些订单是策略产生的，哪些是手动产生的
 
-**建议**：创建一个专门的钱包，只用于尾盘策略。
+**建议**：创建一个专门的钱包，只用于加密价差策略。
 
 ### Q7：下单价格为什么是固定的 0.99？
 
@@ -352,7 +352,7 @@
 
 ### Q8：策略需要依赖自动赎回功能吗？
 
-**A**：是的，尾盘策略依赖自动赎回功能。
+**A**：是的，加密价差策略依赖自动赎回功能。
 
 **原因**：
 - 策略下单后会形成仓位
@@ -411,7 +411,7 @@
 
 ### 7.1 查看策略列表
 
-在「尾盘策略」页面可以查看所有策略：
+在「加密价差策略」页面可以查看所有策略：
 - 策略名称
 - 市场信息
 - 时间窗口
@@ -453,7 +453,7 @@
 
 ## 八、总结
 
-尾盘策略是一个强大的自动化交易工具，可以帮助您：
+加密价差策略是一个强大的自动化交易工具，可以帮助您：
 
 1. **自动化交易**：无需手动盯盘，系统自动执行
 2. **精准控制**：通过时间窗口和价格区间精确控制触发条件
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 0726391..a8c0faa 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -35,6 +35,7 @@ import Announcements from './pages/Announcements'
 import BacktestList from './pages/BacktestList'
 import BacktestDetail from './pages/BacktestDetail'
 import CryptoTailStrategyList from './pages/CryptoTailStrategyList'
+import CryptoTailMonitor from './pages/CryptoTailMonitor'
 import { wsManager } from './services/websocket'
 import type { OrderPushMessage } from './types'
 import { apiService } from './services/api'
@@ -252,6 +253,7 @@ function App() {
           <Route path="/templates/edit/:id" element={<ProtectedRoute><TemplateEdit /></ProtectedRoute>} />
           <Route path="/copy-trading" element={<ProtectedRoute><CopyTradingList /></ProtectedRoute>} />
           <Route path="/crypto-tail-strategy" element={<ProtectedRoute><CryptoTailStrategyList /></ProtectedRoute>} />
+          <Route path="/crypto-tail-monitor" element={<ProtectedRoute><CryptoTailMonitor /></ProtectedRoute>} />
           <Route path="/copy-trading/statistics/:copyTradingId" element={<ProtectedRoute><CopyTradingStatistics /></ProtectedRoute>} />
           {/* 保留旧路由以保持向后兼容 */}
           <Route path="/copy-trading/orders/buy/:copyTradingId" element={<ProtectedRoute><CopyTradingBuyOrders /></ProtectedRoute>} />
diff --git a/frontend/src/components/Layout.tsx b/frontend/src/components/Layout.tsx
index 6c4c8a2..6f4239a 100644
--- a/frontend/src/components/Layout.tsx
+++ b/frontend/src/components/Layout.tsx
@@ -21,7 +21,9 @@ import {
   SendOutlined,
   ApiOutlined,
   NotificationOutlined,
-  LineChartOutlined
+  LineChartOutlined,
+  RocketOutlined,
+  DashboardOutlined
 } from '@ant-design/icons'
 import type { MenuProps } from 'antd'
 import type { ReactNode } from 'react'
@@ -75,6 +77,9 @@ const Layout: React.FC<LayoutProps> = ({ children }) => {
     if (path.startsWith('/leaders') || path.startsWith('/templates') || path.startsWith('/copy-trading') || path.startsWith('/backtest')) {
       keys.push('/copy-trading-management')
     }
+    if (path.startsWith('/crypto-tail-strategy') || path.startsWith('/crypto-tail-monitor')) {
+      keys.push('/crypto-tail-management')
+    }
     if (path.startsWith('/system-settings')) {
       keys.push('/system-settings')
     }
@@ -90,6 +95,9 @@ const Layout: React.FC<LayoutProps> = ({ children }) => {
     if (path.startsWith('/leaders') || path.startsWith('/templates') || path.startsWith('/copy-trading') || path.startsWith('/backtest')) {
       keys.push('/copy-trading-management')
     }
+    if (path.startsWith('/crypto-tail-strategy') || path.startsWith('/crypto-tail-monitor')) {
+      keys.push('/crypto-tail-management')
+    }
     if (path.startsWith('/system-settings')) {
       keys.push('/system-settings')
     }
@@ -158,9 +166,21 @@ const Layout: React.FC<LayoutProps> = ({ children }) => {
       ]
     },
     {
-      key: '/crypto-tail-strategy',
+      key: '/crypto-tail-management',
       icon: <LineChartOutlined />,
-      label: t('menu.cryptoTailStrategy')
+      label: t('menu.cryptoSpreadStrategy'),
+      children: [
+        {
+          key: '/crypto-tail-strategy',
+          icon: <RocketOutlined />,
+          label: t('menu.cryptoTailStrategy')
+        },
+        {
+          key: '/crypto-tail-monitor',
+          icon: <DashboardOutlined />,
+          label: t('menu.cryptoTailMonitor')
+        }
+      ]
     },
     {
       key: '/positions',
@@ -230,7 +250,7 @@ const Layout: React.FC<LayoutProps> = ({ children }) => {
   
   const handleMenuClick = ({ key }: { key: string }) => {
     // 如果是父菜单，不导航（但 /system-settings 作为子菜单项时可以导航）
-    if (key === '/copy-trading-management') {
+    if (key === '/copy-trading-management' || key === '/crypto-tail-management') {
       return
     }
     
@@ -288,7 +308,7 @@ const Layout: React.FC<LayoutProps> = ({ children }) => {
                 alignItems: 'center',
                 verticalAlign: 'middle'
               }}
-              title={hasUpdate ? '有新版本可用，点击前往系统更新' : '当前已是最新版本'}
+              title={hasUpdate ? t('systemUpdate.versionTooltipNew') : t('systemUpdate.versionTooltipLatest')}
             >
               {getVersionInfo().gitTag || `v${getVersionText()}`}
             </Tag>
@@ -410,7 +430,7 @@ const Layout: React.FC<LayoutProps> = ({ children }) => {
                 alignItems: 'center',
                 verticalAlign: 'middle'
               }}
-              title={hasUpdate ? '有新版本可用，点击前往系统更新' : '当前已是最新版本'}
+              title={hasUpdate ? t('systemUpdate.versionTooltipNew') : t('systemUpdate.versionTooltipLatest')}
             >
               {getVersionInfo().gitTag || `v${getVersionText()}`}
             </Tag>
diff --git a/frontend/src/locales/en/common.json b/frontend/src/locales/en/common.json
index d424ede..bd68b3c 100644
--- a/frontend/src/locales/en/common.json
+++ b/frontend/src/locales/en/common.json
@@ -312,7 +312,9 @@
     "leaders": "Leader Management",
     "templates": "Templates",
     "copyTradingConfig": "Copy Trading Config",
-    "cryptoTailStrategy": "Tail Strategy",
+    "cryptoSpreadStrategy": "Crypto Spread Strategy",
+    "cryptoTailStrategy": "Strategy Config",
+    "cryptoTailMonitor": "Real-time Monitor",
     "positions": "Position Management",
     "backtest": "Backtest",
     "statistics": "Statistics",
@@ -418,6 +420,40 @@
       "saveFailed": "Failed to save auto redeem configuration"
     }
   },
+  "systemUpdate": {
+    "title": "System Update",
+    "currentVersion": "Current Version",
+    "ready": "Ready",
+    "hasNewVersion": "New version available: {{version}}",
+    "alreadyLatest": "You are on the latest version",
+    "checkFailed": "Failed to check for updates",
+    "confirmTitle": "Confirm Update",
+    "confirmContent1": "Update to version {{version}}?",
+    "confirmContent2": "The system will be temporarily unavailable during the update (about 30-60 seconds).",
+    "confirmContent3": "The page will refresh automatically when the update completes.",
+    "okText": "Update Now",
+    "cancelText": "Cancel",
+    "updateStarted": "Update started, please wait...",
+    "updateFailedWithMessage": "Update failed: {{message}}",
+    "updateSuccessRefresh": "Update successful! Page will refresh in 3 seconds...",
+    "needAdmin": "Admin permission required to perform update",
+    "startFailed": "Failed to start update",
+    "updating": "System is updating",
+    "updateFailedTitle": "Update Failed",
+    "checkUpdate": "Check for Updates",
+    "newVersionFound": "New Version Available",
+    "publishedAt": "Published At",
+    "releaseNotes": "Release Notes",
+    "upgradeNow": "Upgrade to v{{version}} Now",
+    "usageTitle": "Instructions",
+    "usage1": "Click \"Check for Updates\" to see if a new version is available",
+    "usage2": "Update takes about 30-60 seconds; the system will be temporarily unavailable",
+    "usage3": "The page will refresh automatically after a successful update",
+    "usage4": "If the update fails, the system will roll back to the current version",
+    "versionTooltipNew": "New version available, click to go to System Update",
+    "versionTooltipLatest": "You are on the latest version",
+    "prerelease": "Pre-release"
+  },
   "builderApiKey": {
     "title": "Builder API Key Configuration",
     "alertTitle": "What is Builder API Key?",
@@ -1450,12 +1486,12 @@
   "cryptoTailStrategy": {
     "binanceApiAlert": {
       "title": "Cannot connect to Binance API — strategy cannot run for now",
-      "description": "Tail strategy needs Binance market data to work. The connection failed; this may be a network issue or Binance outage. Try again later by clicking the button below.",
+      "description": "Crypto spread strategy needs Binance market data to work. The connection failed; this may be a network issue or Binance outage. Try again later by clicking the button below.",
       "recheck": "Re-check"
     },
     "list": {
-      "title": "Crypto Tail Strategy",
-      "walletTip": "Use a dedicated wallet for tail strategy. Do not use it for manual trading or copy trading to avoid balance/position issues.",
+      "title": "Crypto Spread Strategy",
+      "walletTip": "Use a dedicated wallet for crypto spread strategy. Do not use it for manual trading or copy trading to avoid balance/position issues.",
       "addStrategy": "Add Strategy",
       "strategyName": "Strategy Name",
       "account": "Account",
@@ -1512,7 +1548,7 @@
     },
     "redeemRequiredModal": {
       "title": "Configure Auto Redeem First",
-      "description": "Tail strategy requires auto redeem. Please configure Builder API Key and enable auto redeem in System Settings.",
+      "description": "Crypto spread strategy requires auto redeem. Please configure Builder API Key and enable auto redeem in System Settings.",
       "goToSettings": "Go to Settings",
       "cancel": "Cancel"
     },
@@ -1541,5 +1577,73 @@
       "emptyFail": "No failed records",
       "totalCount": "{count} record(s)"
     }
+  },
+  "cryptoTailMonitor": {
+    "title": "Crypto Spread Strategy Monitor",
+    "selectStrategy": "Strategy",
+    "selectStrategyPlaceholder": "Select a strategy to monitor",
+    "direction": "Direction",
+    "directionUp": "Up",
+    "directionDown": "Down",
+    "noData": "Select a strategy to start monitoring",
+    "priceRange": "Price Range",
+    "timeWindow": "Time Window",
+    "stat": {
+      "openPrice": "Open Price",
+      "currentPrice": "Current Price",
+      "spread": "Spread",
+      "remainingTime": "Remaining",
+      "configuredSpread": "Configured Spread",
+      "configuredSpreadMin": "Min Spread",
+      "configuredSpreadMax": "Max Spread",
+      "status": "Status",
+      "minSpreadLine": "Min Spread",
+      "periodSpreadMinMax": "Period Spread",
+      "periodSpreadMin": "Period Min Spread",
+      "periodSpreadMax": "Period Max Spread",
+      "minSpread": "Min",
+      "maxSpread": "Max"
+    },
+    "status": {
+      "triggered": "Triggered",
+      "periodEnded": "Period Ended",
+      "inCondition": "In Condition",
+      "waiting": "Waiting"
+    },
+    "chart": {
+      "title": "Price Chart",
+      "btcTitle": "BTC Price Chart",
+      "marketTitle": "Market Price Chart",
+      "priceChart": "Price Chart",
+      "price": "Price",
+      "openPrice": "Open",
+      "spread": "Spread",
+      "minSpreadLine": "Min Spread Line",
+      "maxSpreadLine": "Max Spread Line",
+      "marketUp": "Up",
+      "marketDown": "Down",
+      "time": "Time",
+      "latestPrice": "Latest",
+      "timeWindowStart": "Window Start",
+      "timeWindowEnd": "Window End"
+    },
+    "strategyInfo": {
+      "title": "Strategy Info",
+      "market": "Market",
+      "interval": "Interval",
+      "account": "Account",
+      "spreadMode": "Spread Mode",
+      "spreadDirection": "Spread Direction"
+    },
+    "periodSwitch": {
+      "mode": "Period Switch Mode",
+      "auto": "Auto",
+      "manual": "Manual",
+      "autoDesc": "Automatically switch to the latest period when it ends",
+      "manualDesc": "Keep complete data when period ends",
+      "switchToLatest": "Switch to Latest Period",
+      "periodEnded": "Current period has ended",
+      "newPeriodAvailable": "New period has started"
+    }
   }
 }
\ No newline at end of file
diff --git a/frontend/src/locales/zh-CN/common.json b/frontend/src/locales/zh-CN/common.json
index 3b3f561..8f442c8 100644
--- a/frontend/src/locales/zh-CN/common.json
+++ b/frontend/src/locales/zh-CN/common.json
@@ -92,6 +92,7 @@
     "accountNamePlaceholder": "账户名称（可选）",
     "accountIdRequired": "账户ID不能为空",
     "walletAddress": "钱包地址",
+    "walletType": "钱包类型",
     "proxyAddress": "代理钱包地址",
     "apiCredentials": "API 凭证",
     "apiKey": "API Key",
@@ -311,7 +312,9 @@
     "leaders": "Leader 管理",
     "templates": "跟单模板",
     "copyTradingConfig": "跟单配置",
-    "cryptoTailStrategy": "尾盘策略",
+    "cryptoSpreadStrategy": "加密价差策略",
+    "cryptoTailStrategy": "策略配置",
+    "cryptoTailMonitor": "实时监控",
     "positions": "仓位管理",
     "backtest": "回测",
     "statistics": "统计信息",
@@ -417,6 +420,40 @@
       "saveFailed": "保存自动赎回配置失败"
     }
   },
+  "systemUpdate": {
+    "title": "系统更新",
+    "currentVersion": "当前版本",
+    "ready": "就绪",
+    "hasNewVersion": "发现新版本: {{version}}",
+    "alreadyLatest": "当前已是最新版本",
+    "checkFailed": "检查更新失败",
+    "confirmTitle": "确认更新",
+    "confirmContent1": "确定要更新到版本 {{version}} 吗？",
+    "confirmContent2": "更新过程中系统将暂时不可用（约30-60秒）。",
+    "confirmContent3": "更新完成后页面将自动刷新。",
+    "okText": "立即更新",
+    "cancelText": "取消",
+    "updateStarted": "更新已启动，请稍候...",
+    "updateFailedWithMessage": "更新失败: {{message}}",
+    "updateSuccessRefresh": "更新成功！页面将在3秒后刷新...",
+    "needAdmin": "需要管理员权限才能执行更新",
+    "startFailed": "启动更新失败",
+    "updating": "系统正在更新",
+    "updateFailedTitle": "更新失败",
+    "checkUpdate": "检查更新",
+    "newVersionFound": "发现新版本",
+    "publishedAt": "发布时间",
+    "releaseNotes": "更新内容",
+    "upgradeNow": "立即升级到 v{{version}}",
+    "usageTitle": "使用说明",
+    "usage1": "点击「检查更新」按钮检查是否有新版本",
+    "usage2": "更新过程约需30-60秒，期间系统将暂时不可用",
+    "usage3": "更新成功后页面将自动刷新",
+    "usage4": "如果更新失败，系统会自动回滚到当前版本",
+    "versionTooltipNew": "有新版本可用，点击前往系统更新",
+    "versionTooltipLatest": "当前已是最新版本",
+    "prerelease": "预发布"
+  },
   "builderApiKey": {
     "title": "Builder API Key 配置",
     "alertTitle": "什么是 Builder API Key？",
@@ -1449,12 +1486,12 @@
   "cryptoTailStrategy": {
     "binanceApiAlert": {
       "title": "无法连接币安 API，策略暂时不能运行",
-      "description": "尾盘策略需要从币安获取行情数据才能工作。当前连接失败，可能是网络问题或币安服务异常，请稍后点击下方按钮重新检测。",
+      "description": "加密价差策略需要从币安获取行情数据才能工作。当前连接失败，可能是网络问题或币安服务异常，请稍后点击下方按钮重新检测。",
       "recheck": "重新检测"
     },
     "list": {
-      "title": "加密尾盘策略",
-      "walletTip": "请使用单独的钱包运行尾盘策略，避免该钱包用于手动交易、跟单等其他操作，否则可能导致余额或仓位变化，造成策略执行异常。",
+      "title": "加密价差策略",
+      "walletTip": "请使用单独的钱包运行加密价差策略，避免该钱包用于手动交易、跟单等其他操作，否则可能导致余额或仓位变化，造成策略执行异常。",
       "addStrategy": "新增策略",
       "strategyName": "策略名称",
       "account": "账户",
@@ -1511,7 +1548,7 @@
     },
     "redeemRequiredModal": {
       "title": "请先配置自动赎回",
-      "description": "尾盘策略依赖自动赎回功能，请先在系统设置中配置 Builder API Key 并开启自动赎回。",
+      "description": "加密价差策略依赖自动赎回功能，请先在系统设置中配置 Builder API Key 并开启自动赎回。",
       "goToSettings": "去配置",
       "cancel": "取消"
     },
@@ -1540,5 +1577,73 @@
       "emptyFail": "暂无失败记录",
       "totalCount": "共 {count} 条"
     }
+  },
+  "cryptoTailMonitor": {
+    "title": "加密价差策略监控",
+    "selectStrategy": "选择策略",
+    "selectStrategyPlaceholder": "请选择要监控的策略",
+    "direction": "监控方向",
+    "directionUp": "Up",
+    "directionDown": "Down",
+    "noData": "请选择一个策略开始监控",
+    "priceRange": "价格区间",
+    "timeWindow": "时间窗口",
+    "stat": {
+      "openPrice": "开盘价",
+      "currentPrice": "最新价",
+      "spread": "价差",
+      "remainingTime": "剩余时间",
+      "configuredSpread": "配置价差",
+      "configuredSpreadMin": "最小价差",
+      "configuredSpreadMax": "最大价差",
+      "status": "状态",
+      "minSpreadLine": "最小价差线",
+      "periodSpreadMinMax": "周期内价差",
+      "periodSpreadMin": "周期内最小价差",
+      "periodSpreadMax": "周期内最大价差",
+      "minSpread": "最小",
+      "maxSpread": "最大"
+    },
+    "status": {
+      "triggered": "已触发",
+      "periodEnded": "周期结束",
+      "inCondition": "满足条件",
+      "waiting": "等待中"
+    },
+    "chart": {
+      "title": "分时图",
+      "btcTitle": "BTC 分时图",
+      "marketTitle": "市场分时图",
+      "priceChart": "价格分时图",
+      "price": "价格",
+      "openPrice": "开盘价",
+      "spread": "价差",
+      "minSpreadLine": "最小价差线",
+      "maxSpreadLine": "最大价差线",
+      "marketUp": "Up",
+      "marketDown": "Down",
+      "time": "时间",
+      "latestPrice": "最新价",
+      "timeWindowStart": "区间开始",
+      "timeWindowEnd": "区间结束"
+    },
+    "strategyInfo": {
+      "title": "策略信息",
+      "market": "市场",
+      "interval": "周期",
+      "account": "账户",
+      "spreadMode": "价差模式",
+      "spreadDirection": "价差方向"
+    },
+    "periodSwitch": {
+      "mode": "周期切换模式",
+      "auto": "自动",
+      "manual": "手动",
+      "autoDesc": "周期结束时自动切换到最新周期",
+      "manualDesc": "周期结束时保留完整数据",
+      "switchToLatest": "切换到最新周期",
+      "periodEnded": "当前周期已结束",
+      "newPeriodAvailable": "新周期已开始"
+    }
   }
 }
\ No newline at end of file
diff --git a/frontend/src/locales/zh-TW/common.json b/frontend/src/locales/zh-TW/common.json
index ab6a7c5..a0d8fd2 100644
--- a/frontend/src/locales/zh-TW/common.json
+++ b/frontend/src/locales/zh-TW/common.json
@@ -312,7 +312,9 @@
     "leaders": "Leader 管理",
     "templates": "跟單模板",
     "copyTradingConfig": "跟單配置",
-    "cryptoTailStrategy": "尾盤策略",
+    "cryptoSpreadStrategy": "加密價差策略",
+    "cryptoTailStrategy": "策略配置",
+    "cryptoTailMonitor": "即時監控",
     "positions": "倉位管理",
     "backtest": "回測",
     "statistics": "統計信息",
@@ -418,6 +420,40 @@
       "saveFailed": "保存自動贖回配置失敗"
     }
   },
+  "systemUpdate": {
+    "title": "系統更新",
+    "currentVersion": "當前版本",
+    "ready": "就緒",
+    "hasNewVersion": "發現新版本: {{version}}",
+    "alreadyLatest": "當前已是最新版本",
+    "checkFailed": "檢查更新失敗",
+    "confirmTitle": "確認更新",
+    "confirmContent1": "確定要更新到版本 {{version}} 嗎？",
+    "confirmContent2": "更新過程中系統將暫時不可用（約30-60秒）。",
+    "confirmContent3": "更新完成後頁面將自動刷新。",
+    "okText": "立即更新",
+    "cancelText": "取消",
+    "updateStarted": "更新已啟動，請稍候...",
+    "updateFailedWithMessage": "更新失敗: {{message}}",
+    "updateSuccessRefresh": "更新成功！頁面將在3秒後刷新...",
+    "needAdmin": "需要管理員權限才能執行更新",
+    "startFailed": "啟動更新失敗",
+    "updating": "系統正在更新",
+    "updateFailedTitle": "更新失敗",
+    "checkUpdate": "檢查更新",
+    "newVersionFound": "發現新版本",
+    "publishedAt": "發佈時間",
+    "releaseNotes": "更新內容",
+    "upgradeNow": "立即升級到 v{{version}}",
+    "usageTitle": "使用說明",
+    "usage1": "點擊「檢查更新」按鈕檢查是否有新版本",
+    "usage2": "更新過程約需30-60秒，期間系統將暫時不可用",
+    "usage3": "更新成功後頁面將自動刷新",
+    "usage4": "如果更新失敗，系統會自動回滾到當前版本",
+    "versionTooltipNew": "有新版本可用，點擊前往系統更新",
+    "versionTooltipLatest": "當前已是最新版本",
+    "prerelease": "預發佈"
+  },
   "builderApiKey": {
     "title": "Builder API Key 配置",
     "alertTitle": "什麼是 Builder API Key？",
@@ -1450,12 +1486,12 @@
   "cryptoTailStrategy": {
     "binanceApiAlert": {
       "title": "無法連接幣安 API，策略暫時不能運行",
-      "description": "尾盤策略需要從幣安取得行情資料才能運作。目前連線失敗，可能是網路問題或幣安服務異常，請稍後點擊下方按鈕重新檢測。",
+      "description": "加密價差策略需要從幣安取得行情資料才能運作。目前連線失敗，可能是網路問題或幣安服務異常，請稍後點擊下方按鈕重新檢測。",
       "recheck": "重新檢測"
     },
     "list": {
-      "title": "加密尾盤策略",
-      "walletTip": "請使用單獨的錢包運行尾盤策略，避免該錢包用於手動交易、跟單等其他操作，否則可能導致餘額或倉位變化，造成策略執行異常。",
+      "title": "加密價差策略",
+      "walletTip": "請使用單獨的錢包運行加密價差策略，避免該錢包用於手動交易、跟單等其他操作，否則可能導致餘額或倉位變化，造成策略執行異常。",
       "addStrategy": "新增策略",
       "strategyName": "策略名稱",
       "account": "賬戶",
@@ -1512,7 +1548,7 @@
     },
     "redeemRequiredModal": {
       "title": "請先配置自動贖回",
-      "description": "尾盤策略依賴自動贖回功能，請先在系統設置中配置 Builder API Key 並開啟自動贖回。",
+      "description": "加密價差策略依賴自動贖回功能，請先在系統設置中配置 Builder API Key 並開啟自動贖回。",
       "goToSettings": "去配置",
       "cancel": "取消"
     },
@@ -1541,5 +1577,73 @@
       "emptyFail": "暫無失敗記錄",
       "totalCount": "共 {count} 條"
     }
+  },
+  "cryptoTailMonitor": {
+    "title": "加密價差策略監控",
+    "selectStrategy": "選擇策略",
+    "selectStrategyPlaceholder": "請選擇要監控的策略",
+    "direction": "監控方向",
+    "directionUp": "Up",
+    "directionDown": "Down",
+    "noData": "請選擇一個策略開始監控",
+    "priceRange": "價格區間",
+    "timeWindow": "時間窗口",
+    "stat": {
+      "openPrice": "開盤價",
+      "currentPrice": "最新價",
+      "spread": "價差",
+      "remainingTime": "剩餘時間",
+      "configuredSpread": "配置價差",
+      "configuredSpreadMin": "最小價差",
+      "configuredSpreadMax": "最大價差",
+      "status": "狀態",
+      "minSpreadLine": "最小價差線",
+      "periodSpreadMinMax": "週期內價差",
+      "periodSpreadMin": "週期內最小價差",
+      "periodSpreadMax": "週期內最大價差",
+      "minSpread": "最小",
+      "maxSpread": "最大"
+    },
+    "status": {
+      "triggered": "已觸發",
+      "periodEnded": "週期結束",
+      "inCondition": "滿足條件",
+      "waiting": "等待中"
+    },
+    "chart": {
+      "title": "分時圖",
+      "btcTitle": "BTC 分時圖",
+      "marketTitle": "市場分時圖",
+      "priceChart": "價格分時圖",
+      "price": "價格",
+      "openPrice": "開盤價",
+      "spread": "價差",
+      "minSpreadLine": "最小價差線",
+      "maxSpreadLine": "最大價差線",
+      "marketUp": "Up",
+      "marketDown": "Down",
+      "time": "時間",
+      "latestPrice": "最新價",
+      "timeWindowStart": "區間開始",
+      "timeWindowEnd": "區間結束"
+    },
+    "strategyInfo": {
+      "title": "策略信息",
+      "market": "市場",
+      "interval": "週期",
+      "account": "賬戶",
+      "spreadMode": "價差模式",
+      "spreadDirection": "價差方向"
+    },
+    "periodSwitch": {
+      "mode": "週期切換模式",
+      "auto": "自動",
+      "manual": "手動",
+      "autoDesc": "週期結束時自動切換到最新週期",
+      "manualDesc": "週期結束時保留完整數據",
+      "switchToLatest": "切換到最新週期",
+      "periodEnded": "當前週期已結束",
+      "newPeriodAvailable": "新週期已開始"
+    }
   }
 }
\ No newline at end of file
diff --git a/frontend/src/pages/CryptoTailMonitor.tsx b/frontend/src/pages/CryptoTailMonitor.tsx
new file mode 100644
index 0000000..ee47bda
--- /dev/null
+++ b/frontend/src/pages/CryptoTailMonitor.tsx
@@ -0,0 +1,951 @@
+import { useEffect, useState, useRef, useCallback } from 'react'
+import {
+  Card,
+  Select,
+  Space,
+  Statistic,
+  Row,
+  Col,
+  Typography,
+  Spin,
+  Empty,
+  Alert,
+  Radio,
+  Button,
+  Tooltip
+} from 'antd'
+import { ClockCircleOutlined, SyncOutlined, InfoCircleOutlined } from '@ant-design/icons'
+import { useTranslation } from 'react-i18next'
+import { useMediaQuery } from 'react-responsive'
+import * as echarts from 'echarts'
+import type { EChartsOption } from 'echarts'
+import { apiService } from '../services/api'
+import { useWebSocketSubscription } from '../hooks/useWebSocket'
+import { formatNumber } from '../utils'
+import type {
+  CryptoTailStrategyDto,
+  CryptoTailMonitorInitResponse,
+  CryptoTailMonitorPushData
+} from '../types'
+
+const { Title, Text } = Typography
+
+/** 分时图数据点：时间戳、BTC 价格 USDC、市场 Up/Down 价格 0-1 */
+interface PriceDataPoint {
+  time: number
+  btcPrice: number | null
+  marketPriceUp: number | null
+  marketPriceDown: number | null
+}
+
+const CryptoTailMonitor: React.FC = () => {
+  const { t } = useTranslation()
+  const isMobile = useMediaQuery({ maxWidth: 768 })
+
+  // 策略列表
+  const [strategies, setStrategies] = useState<CryptoTailStrategyDto[]>([])
+  const [strategiesLoading, setStrategiesLoading] = useState(false)
+
+  // 选中的策略
+  const [selectedStrategyId, setSelectedStrategyId] = useState<number | null>(null)
+
+  // 监控数据
+  const [initData, setInitData] = useState<CryptoTailMonitorInitResponse | null>(null)
+  const [pushData, setPushData] = useState<CryptoTailMonitorPushData | null>(null)
+  const [initLoading, setInitLoading] = useState(false)
+
+  // 价格历史数据（用于分时图）
+  const [priceHistory, setPriceHistory] = useState<PriceDataPoint[]>([])
+  const chartRef = useRef<HTMLDivElement>(null)
+  const chartInstance = useRef<echarts.ECharts | null>(null)
+  const marketChartRef = useRef<HTMLDivElement>(null)
+  const marketChartInstance = useRef<echarts.ECharts | null>(null)
+  const lastPeriodStartRef = useRef<number | null>(null)
+
+  // localStorage key for period switch mode
+  const PERIOD_SWITCH_MODE_KEY = 'cryptoTailMonitor_periodSwitchMode'
+
+  // 记录首次数据进入时间（用于中途进入时的横轴起点）
+  const [firstDataTime, setFirstDataTime] = useState<number | null>(null)
+  // 标记是否已切换过周期（切换后使用完整周期）
+  const [hasSwitchedPeriod, setHasSwitchedPeriod] = useState<boolean>(false)
+  // 周期切换模式：auto（自动切换）| manual（手动切换），从 localStorage 读取缓存
+  const [periodSwitchMode, setPeriodSwitchMode] = useState<'auto' | 'manual'>(() => {
+    const cached = localStorage.getItem(PERIOD_SWITCH_MODE_KEY)
+    return (cached === 'auto' || cached === 'manual') ? cached : 'auto'
+  })
+  // 手动模式下，存储最新周期的数据（用户未切换时）
+  const [pendingPeriodData, setPendingPeriodData] = useState<{
+    periodStartUnix: number
+    priceHistory: PriceDataPoint[]
+    initData: CryptoTailMonitorInitResponse | null
+    pushData: CryptoTailMonitorPushData | null
+  } | null>(null)
+  // 标记当前是否在查看旧周期（手动模式下）
+  const [isViewingOldPeriod, setIsViewingOldPeriod] = useState<boolean>(false)
+
+  // 获取策略列表
+  useEffect(() => {
+    const fetchStrategies = async () => {
+      setStrategiesLoading(true)
+      try {
+        const res = await apiService.cryptoTailStrategy.list({ enabled: true })
+        if (res.data.code === 0 && res.data.data) {
+          setStrategies(res.data.data.list ?? [])
+          // 自动选择第一个策略
+          if (res.data.data.list?.length > 0 && !selectedStrategyId) {
+            setSelectedStrategyId(res.data.data.list[0].id)
+          }
+        }
+      } catch (e) {
+        console.error('Failed to fetch strategies:', e)
+      } finally {
+        setStrategiesLoading(false)
+      }
+    }
+    fetchStrategies()
+  }, [])
+
+  // 初始化监控数据
+  useEffect(() => {
+    if (!selectedStrategyId) {
+      setInitData(null)
+      setPushData(null)
+      setPriceHistory([])
+      setFirstDataTime(null)
+      setHasSwitchedPeriod(false)
+      setPendingPeriodData(null)
+      setIsViewingOldPeriod(false)
+      return
+    }
+
+    const initMonitor = async () => {
+      setInitLoading(true)
+      setPriceHistory([])
+      setFirstDataTime(null)
+      setHasSwitchedPeriod(false)
+      setPendingPeriodData(null)
+      setIsViewingOldPeriod(false)
+      try {
+        const res = await apiService.cryptoTailStrategy.monitorInit(selectedStrategyId)
+        if (res.data.code === 0 && res.data.data) {
+          setInitData(res.data.data)
+        } else {
+          setInitData(null)
+        }
+      } catch (e) {
+        console.error('Failed to init monitor:', e)
+        setInitData(null)
+      } finally {
+        setInitLoading(false)
+      }
+    }
+    initMonitor()
+  }, [selectedStrategyId])
+
+  // WebSocket 订阅
+  const handlePushData = useCallback((data: CryptoTailMonitorPushData) => {
+    if (data.strategyId !== selectedStrategyId) return
+
+    const btcPrice = data.currentPriceBtc != null && data.currentPriceBtc !== ''
+      ? parseFloat(data.currentPriceBtc)
+      : null
+    const marketUp = data.currentPriceUp != null && data.currentPriceUp !== ''
+      ? parseFloat(data.currentPriceUp)
+      : null
+    const marketDown = data.currentPriceDown != null && data.currentPriceDown !== ''
+      ? parseFloat(data.currentPriceDown)
+      : null
+    const hasBtc = btcPrice != null && !Number.isNaN(btcPrice)
+    const hasMarket = (marketUp != null && !Number.isNaN(marketUp)) || (marketDown != null && !Number.isNaN(marketDown))
+    if (!hasBtc && !hasMarket) return
+
+    const newPoint: PriceDataPoint = {
+      time: data.timestamp,
+      btcPrice: hasBtc ? btcPrice : null,
+      marketPriceUp: hasMarket && marketUp != null && !Number.isNaN(marketUp) ? marketUp : null,
+      marketPriceDown: hasMarket && marketDown != null && !Number.isNaN(marketDown) ? marketDown : null
+    }
+
+    // 用 ref 检测周期切换，避免因依赖 initData 导致回调频繁重建
+    const pushPeriod = data.periodStartUnix
+    const lastPeriod = lastPeriodStartRef.current
+
+    if (pushPeriod != null && pushPeriod !== lastPeriod) {
+      // 新周期到来
+      lastPeriodStartRef.current = pushPeriod
+
+      if (periodSwitchMode === 'manual' && lastPeriod != null) {
+        // 手动模式：保存新周期数据到 pending，保留当前显示
+        setPendingPeriodData({
+          periodStartUnix: pushPeriod,
+          priceHistory: [newPoint],
+          initData: null,
+          pushData: data
+        })
+        setIsViewingOldPeriod(true)
+        // 更新 pending 数据的 initData
+        setInitData(prev => {
+          if (prev) {
+            setPendingPeriodData(p => p ? { ...p, initData: { ...prev, periodStartUnix: pushPeriod, marketTitle: (data as { marketTitle?: string }).marketTitle ?? prev.marketTitle } } : null)
+          }
+          return prev
+        })
+      } else {
+        // 自动模式或首次推送：直接切换
+        if (lastPeriod != null) {
+          setHasSwitchedPeriod(true)
+        }
+        setFirstDataTime(newPoint.time)
+        setInitData(prev => prev ? { ...prev, periodStartUnix: pushPeriod, marketTitle: (data as { marketTitle?: string }).marketTitle ?? prev.marketTitle } : null)
+        setPriceHistory([newPoint])
+        setPushData(data)
+        setIsViewingOldPeriod(false)
+        setPendingPeriodData(null)
+        return
+      }
+    } else {
+      // 同周期：追加数据
+      if (periodSwitchMode === 'manual' && isViewingOldPeriod && pendingPeriodData) {
+        // 手动模式下，更新 pending 数据
+        const minIntervalMs = 1_000
+        setPendingPeriodData(prev => {
+          if (!prev) return null
+          const lastTime = prev.priceHistory.length > 0 ? prev.priceHistory[prev.priceHistory.length - 1].time : 0
+          if (prev.priceHistory.length > 0 && newPoint.time - lastTime < minIntervalMs) {
+            return { ...prev, pushData: data }
+          }
+          const maxPoints = 300
+          const newHistory = [...prev.priceHistory, newPoint].slice(-maxPoints)
+          return { ...prev, priceHistory: newHistory, pushData: data }
+        })
+      } else {
+        setFirstDataTime(prev => {
+          if (prev == null) {
+            return newPoint.time
+          }
+          return prev
+        })
+        const minIntervalMs = 1_000
+        setPriceHistory(prev => {
+          const lastTime = prev.length > 0 ? prev[prev.length - 1].time : 0
+          if (prev.length > 0 && newPoint.time - lastTime < minIntervalMs) {
+            return prev
+          }
+          const maxPoints = 300
+          const newHistory = [...prev, newPoint]
+          return newHistory.slice(-maxPoints)
+        })
+        setPushData(data)
+      }
+    }
+  }, [selectedStrategyId, periodSwitchMode, isViewingOldPeriod, pendingPeriodData])
+
+  // 手动切换到最新周期
+  const handleSwitchToLatestPeriod = useCallback(() => {
+    if (pendingPeriodData) {
+      setPriceHistory(pendingPeriodData.priceHistory)
+      setFirstDataTime(pendingPeriodData.priceHistory[0]?.time ?? null)
+      if (pendingPeriodData.initData) {
+        setInitData(pendingPeriodData.initData)
+      }
+      if (pendingPeriodData.pushData) {
+        setPushData(pendingPeriodData.pushData)
+      }
+      setHasSwitchedPeriod(true)
+      setIsViewingOldPeriod(false)
+      setPendingPeriodData(null)
+    }
+  }, [pendingPeriodData])
+
+  const channel = selectedStrategyId ? `crypto_tail_monitor_${selectedStrategyId}` : ''
+  useWebSocketSubscription(channel, handlePushData)
+
+  // 图表容器仅在 initData 存在时渲染，故在更新图表时懒初始化
+  useEffect(() => {
+    const handleResize = () => {
+      chartInstance.current?.resize()
+      marketChartInstance.current?.resize()
+    }
+    window.addEventListener('resize', handleResize)
+    return () => {
+      window.removeEventListener('resize', handleResize)
+      chartInstance.current?.dispose()
+      chartInstance.current = null
+      marketChartInstance.current?.dispose()
+      marketChartInstance.current = null
+    }
+  }, [])
+
+  // 切换策略时销毁并重新初始化图表实例
+  useEffect(() => {
+    if (chartInstance.current) {
+      chartInstance.current.dispose()
+      chartInstance.current = null
+    }
+    if (marketChartInstance.current) {
+      marketChartInstance.current.dispose()
+      marketChartInstance.current = null
+    }
+  }, [selectedStrategyId])
+
+  // 更新图表：分时图为 BTC 价格 USDC
+  useEffect(() => {
+    if (!initData) return
+    if (chartRef.current && !chartInstance.current) {
+      chartInstance.current = echarts.init(chartRef.current)
+    }
+    if (!chartInstance.current) return
+
+    const periodStartMs = (initData.periodStartUnix ?? 0) * 1000
+    const periodEndMs = periodStartMs + (initData.intervalSeconds ?? 300) * 1000
+
+    // data.timestamp 为毫秒，firstDataTime 已是 ms，无需再乘 1000
+    const firstDataMs = firstDataTime != null ? firstDataTime : null
+    const isMidEntry = firstDataMs != null && !hasSwitchedPeriod && firstDataMs > periodStartMs
+    // 中途进入时横轴起点为进入时刻，否则为周期起点
+    const xAxisMin = isMidEntry ? firstDataMs : periodStartMs
+
+    const btcData: [number, number | null][] = priceHistory.length > 0
+      ? priceHistory.map(p => [p.time, p.btcPrice])
+      : []
+    const openBtc = pushData?.openPriceBtc ?? initData.openPriceBtc
+    const openBtcNum = openBtc != null ? parseFloat(openBtc) : null
+
+    const hasAnyBtcData = btcData.some(([, v]) => v != null && !Number.isNaN(v))
+    const btcPlaceholderTime = xAxisMin
+    const displayBtcData: [number, number | null][] = hasAnyBtcData
+      ? btcData
+      : (openBtcNum != null ? [[btcPlaceholderTime, openBtcNum]] : [])
+    const minSpreadUpRaw = pushData?.minSpreadLineUp ?? initData.autoMinSpreadUp
+    const minSpreadDownRaw = pushData?.minSpreadLineDown ?? initData.autoMinSpreadDown
+    const minSpreadUp = minSpreadUpRaw != null && minSpreadUpRaw !== '' ? parseFloat(minSpreadUpRaw) : null
+    const minSpreadDown = minSpreadDownRaw != null && minSpreadDownRaw !== '' ? parseFloat(minSpreadDownRaw) : null
+
+    const validPrices = displayBtcData.flatMap(([, v]) => (v != null && !Number.isNaN(v) ? [v] : []))
+    const defaultRange = 500
+    let yMin: number | undefined
+    let yMax: number | undefined
+    if (validPrices.length > 0) {
+      const dataMin = Math.min(...validPrices)
+      const dataMax = Math.max(...validPrices)
+      const dataRange = dataMax - dataMin
+      const minRange = Math.max(Math.abs(dataMax) * 0.01, 10)
+      const range = Math.max(dataRange, minRange)
+      const padding = range * 0.25
+      yMin = dataMin - padding
+      yMax = dataMax + padding
+    } else if (openBtcNum != null) {
+      const spread = minSpreadUp ?? minSpreadDown ?? defaultRange
+      const halfRange = spread * 1.5
+      yMin = openBtcNum - halfRange
+      yMax = openBtcNum + halfRange
+    }
+
+    const markLineData: Array<{ name?: string; yAxis?: number; xAxis?: number; lineStyle: { type: 'dashed' | 'solid'; color: string }; label?: { show: boolean; formatter?: string }; emphasis?: { label?: { show?: boolean; formatter?: string } } }> = []
+    if (openBtcNum != null && !Number.isNaN(openBtcNum)) {
+      markLineData.push({
+        name: t('cryptoTailMonitor.chart.openPrice'),
+        yAxis: openBtcNum,
+        lineStyle: { type: 'dashed', color: '#999' }
+      })
+    }
+    const isMaxSpread = (initData.spreadDirection ?? 'MIN') === 'MAX'
+    const spreadLineLabelKey = isMaxSpread ? 'cryptoTailMonitor.chart.maxSpreadLine' : 'cryptoTailMonitor.chart.minSpreadLine'
+    if (openBtcNum != null && minSpreadUp != null && !Number.isNaN(minSpreadUp)) {
+      markLineData.push({
+        name: t(spreadLineLabelKey) + ' Up',
+        yAxis: openBtcNum + minSpreadUp,
+        lineStyle: { type: 'dashed', color: '#ff4d4f' }
+      })
+    }
+    if (openBtcNum != null && minSpreadDown != null && !Number.isNaN(minSpreadDown)) {
+      markLineData.push({
+        name: t(spreadLineLabelKey) + ' Down',
+        yAxis: openBtcNum - minSpreadDown,
+        lineStyle: { type: 'dashed', color: '#ff4d4f' }
+      })
+    }
+    // 时间窗口两条竖线：灰色虚线，悬停时显示标签
+    const windowStartMs = periodStartMs + (initData.windowStartSeconds ?? 0) * 1000
+    const windowEndMs = periodStartMs + (initData.windowEndSeconds ?? 0) * 1000
+    if (windowStartMs > xAxisMin && windowStartMs < periodEndMs) {
+      markLineData.push({
+        xAxis: windowStartMs,
+        lineStyle: { type: 'dashed', color: 'rgba(128, 128, 128, 0.9)' },
+        label: { show: false },
+        emphasis: { label: { show: true, formatter: t('cryptoTailMonitor.chart.timeWindowStart') } }
+      })
+    }
+    if (windowEndMs > xAxisMin && windowEndMs < periodEndMs && windowEndMs !== windowStartMs) {
+      markLineData.push({
+        xAxis: windowEndMs,
+        lineStyle: { type: 'dashed', color: 'rgba(128, 128, 128, 0.9)' },
+        label: { show: false },
+        emphasis: { label: { show: true, formatter: t('cryptoTailMonitor.chart.timeWindowEnd') } }
+      })
+    }
+
+    const periodStartUnixSec = initData.periodStartUnix ?? 0
+    const option: EChartsOption = {
+      tooltip: {
+        trigger: 'axis',
+        confine: true,
+        padding: [6, 8],
+        formatter: (params: unknown) => {
+          const arr = params as Array<{ seriesName: string; name: string | number; value: number | [number, number]; axisValue?: number }>
+          const priceParam = arr.find(p => p.seriesName === t('cryptoTailMonitor.chart.price'))
+          if (!priceParam) return ''
+          const val = Array.isArray(priceParam.value) ? priceParam.value[1] : priceParam.value
+          if (val == null || Number.isNaN(val)) return ''
+          // 优先从 value[0] 取时间戳（毫秒），否则用 axisValue 或 name
+          const rawTime = Array.isArray(priceParam.value)
+            ? priceParam.value[0]
+            : (priceParam.axisValue ?? priceParam.name)
+          let timeStr = ''
+          if (typeof rawTime === 'number' && !Number.isNaN(rawTime)) {
+            const offsetSec = Math.floor(rawTime / 1000) - periodStartUnixSec
+            const mins = Math.floor(offsetSec / 60)
+            const secs = Math.abs(offsetSec) % 60
+            timeStr = `${mins.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`
+          } else if (rawTime != null && rawTime !== '') {
+            timeStr = String(rawTime)
+          } else {
+            timeStr = '--'
+          }
+          return `<span style="font-size:12px">${timeStr} &nbsp; ${Number(val).toFixed(2)} USDC</span>`
+        }
+      },
+      legend: {
+        show: true,
+        top: 0
+      },
+      grid: {
+        left: '3%',
+        right: '4%',
+        bottom: '3%',
+        top: '12%',
+        containLabel: true
+      },
+      xAxis: {
+        type: 'time',
+        min: xAxisMin,
+        max: periodEndMs,
+        axisLabel: {
+          formatter: (val: number) => {
+            const offsetSec = Math.floor(val / 1000) - periodStartUnixSec
+            const mins = Math.floor(offsetSec / 60)
+            const secs = Math.abs(offsetSec) % 60
+            return `${mins.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`
+          }
+        }
+      },
+      yAxis: {
+        type: 'value',
+        scale: true,
+        min: yMin,
+        max: yMax,
+        axisLabel: {
+          formatter: (value: number) => value.toFixed(0)
+        }
+      },
+      series: [
+        {
+          name: t('cryptoTailMonitor.chart.price'),
+          type: 'line',
+          data: displayBtcData,
+          smooth: true,
+          symbol: displayBtcData.length === 1 ? 'circle' : 'none',
+          symbolSize: 4,
+          lineStyle: { width: 2, color: '#1890ff' },
+          areaStyle: {
+            color: {
+              type: 'linear',
+              x: 0,
+              y: 0,
+              x2: 0,
+              y2: 1,
+              colorStops: [
+                { offset: 0, color: 'rgba(24, 144, 255, 0.3)' },
+                { offset: 1, color: 'rgba(24, 144, 255, 0.05)' }
+              ]
+            }
+          },
+          markLine: markLineData.length > 0 ? { symbol: ['none', 'none'], data: markLineData } : undefined,
+          // 添加满足条件的价差区域（浅绿色背景）
+          markArea: (() => {
+            if (openBtcNum == null) return undefined
+            const areas: Array<[{ yAxis: number }, { yAxis: number }]> = []
+            if (isMaxSpread) {
+              // 最大价差：价差 <= 配置值触发，满足条件为靠近开盘价的带状区域
+              if (minSpreadUp != null && !Number.isNaN(minSpreadUp)) {
+                areas.push([
+                  { yAxis: openBtcNum },
+                  { yAxis: openBtcNum + minSpreadUp }
+                ])
+              }
+              if (minSpreadDown != null && !Number.isNaN(minSpreadDown)) {
+                areas.push([
+                  { yAxis: openBtcNum - minSpreadDown },
+                  { yAxis: openBtcNum }
+                ])
+              }
+            } else {
+              // 最小价差：价差 >= 配置值触发，满足条件为远离开盘价的两侧
+              if (minSpreadUp != null && !Number.isNaN(minSpreadUp)) {
+                areas.push([
+                  { yAxis: openBtcNum + minSpreadUp },
+                  { yAxis: yMax ?? openBtcNum + minSpreadUp * 2 }
+                ])
+              }
+              if (minSpreadDown != null && !Number.isNaN(minSpreadDown)) {
+                areas.push([
+                  { yAxis: yMin ?? openBtcNum - minSpreadDown * 2 },
+                  { yAxis: openBtcNum - minSpreadDown }
+                ])
+              }
+            }
+            return areas.length > 0 ? {
+              silent: true,
+              data: areas,
+              itemStyle: { color: 'rgba(82, 196, 26, 0.12)' }
+            } : undefined
+          })()
+        }
+      ]
+    }
+
+    chartInstance.current.setOption(option, true)
+    chartInstance.current.resize()
+  }, [priceHistory, initData, pushData, firstDataTime, hasSwitchedPeriod, t])
+
+  // 更新市场分时图：Polymarket 价格 0-1
+  useEffect(() => {
+    if (!initData) return
+    if (marketChartRef.current && !marketChartInstance.current) {
+      marketChartInstance.current = echarts.init(marketChartRef.current)
+    }
+    if (!marketChartInstance.current) return
+
+    const periodStartMs = (initData.periodStartUnix ?? 0) * 1000
+    const periodEndMs = periodStartMs + (initData.intervalSeconds ?? 300) * 1000
+
+    // data.timestamp 为毫秒，firstDataTime 已是 ms，无需再乘 1000
+    const firstDataMs = firstDataTime != null ? firstDataTime : null
+    const isMidEntry = firstDataMs != null && !hasSwitchedPeriod && firstDataMs > periodStartMs
+    const xAxisMin = isMidEntry ? firstDataMs : periodStartMs
+
+    const toMs = (t: number) => (t > 0 && t < 1e12 ? t * 1000 : t)
+    let marketUpData: [number, number | null][] = priceHistory.length > 0
+      ? priceHistory.map(p => [toMs(p.time), p.marketPriceUp])
+      : []
+    let marketDownData: [number, number | null][] = priceHistory.length > 0
+      ? priceHistory.map(p => [toMs(p.time), p.marketPriceDown])
+      : []
+
+    // 若推送有最新价且与当前周期一致，追加到末端使曲线显示到最新价格
+    if (pushData && pushData.periodStartUnix === (initData.periodStartUnix ?? 0)) {
+      const ts = pushData.timestamp
+      const lastTime = marketUpData.length > 0 ? marketUpData[marketUpData.length - 1][0] : 0
+      const tsMs = ts > 0 && ts < 1e12 ? ts * 1000 : ts
+      if (tsMs >= lastTime) {
+        const up = pushData.currentPriceUp != null && pushData.currentPriceUp !== '' ? parseFloat(pushData.currentPriceUp) : null
+        const down = pushData.currentPriceDown != null && pushData.currentPriceDown !== '' ? parseFloat(pushData.currentPriceDown) : null
+        const upVal = up != null && !Number.isNaN(up) ? up : (down != null && !Number.isNaN(down) ? 1 - down : null)
+        const downVal = down != null && !Number.isNaN(down) ? down : (up != null && !Number.isNaN(up) ? 1 - up : null)
+        if (upVal != null) marketUpData = [...marketUpData, [tsMs, upVal]]
+        if (downVal != null) marketDownData = [...marketDownData, [tsMs, downVal]]
+      }
+    }
+
+    const minPrice = parseFloat(initData.minPrice)
+    const maxPrice = parseFloat(initData.maxPrice)
+    const midPrice = (minPrice + maxPrice) / 2
+    const isValid = (v: number | null): v is number => v != null && !Number.isNaN(v)
+    const validUp: [number, number][] = marketUpData.filter((point): point is [number, number] => isValid(point[1]))
+    const validDown: [number, number][] = marketDownData.filter((point): point is [number, number] => isValid(point[1]))
+    const hasAnyMarketData = validUp.length > 0 || validDown.length > 0
+    const placeholderTime = xAxisMin
+    const finalMarketUp: [number, number][] = hasAnyMarketData ? validUp : [[placeholderTime, midPrice]]
+    const finalMarketDown: [number, number][] = hasAnyMarketData ? validDown : [[placeholderTime, midPrice]]
+
+    const periodStartUnixSec = initData.periodStartUnix ?? 0
+    const windowStartMs = periodStartMs + (initData.windowStartSeconds ?? 0) * 1000
+    const windowEndMs = periodStartMs + (initData.windowEndSeconds ?? 0) * 1000
+    const timeWindowMarkLine: Array<{ xAxis: number; lineStyle: { type: 'dashed'; color: string }; label: { show: boolean }; emphasis: { label: { show: boolean; formatter: string } } }> = []
+    if (windowStartMs > xAxisMin && windowStartMs < periodEndMs) {
+      timeWindowMarkLine.push({
+        xAxis: windowStartMs,
+        lineStyle: { type: 'dashed', color: 'rgba(128, 128, 128, 0.9)' },
+        label: { show: false },
+        emphasis: { label: { show: true, formatter: t('cryptoTailMonitor.chart.timeWindowStart') } }
+      })
+    }
+    if (windowEndMs > xAxisMin && windowEndMs < periodEndMs && windowEndMs !== windowStartMs) {
+      timeWindowMarkLine.push({
+        xAxis: windowEndMs,
+        lineStyle: { type: 'dashed', color: 'rgba(128, 128, 128, 0.9)' },
+        label: { show: false },
+        emphasis: { label: { show: true, formatter: t('cryptoTailMonitor.chart.timeWindowEnd') } }
+      })
+    }
+    const option: EChartsOption = {
+      tooltip: {
+        trigger: 'axis',
+        formatter: (params: unknown) => {
+          const arr = params as Array<{ seriesName: string; name: string | number; value: number | [number, number]; axisValue?: number }>
+          const upParam = arr.find(p => p.seriesName === t('cryptoTailMonitor.chart.marketUp'))
+          const downParam = arr.find(p => p.seriesName === t('cryptoTailMonitor.chart.marketDown'))
+          const firstParam = arr[0]
+          const rawTime = firstParam && Array.isArray(firstParam.value)
+            ? firstParam.value[0]
+            : (firstParam?.axisValue ?? firstParam?.name)
+          let timeStr = ''
+          if (typeof rawTime === 'number' && !Number.isNaN(rawTime)) {
+            const offsetSec = Math.floor(rawTime / 1000) - periodStartUnixSec
+            const mins = Math.floor(offsetSec / 60)
+            const secs = Math.abs(offsetSec) % 60
+            timeStr = `${mins.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`
+          } else if (rawTime != null && rawTime !== '') {
+            timeStr = String(rawTime)
+          } else {
+            timeStr = '--'
+          }
+          let html = `<div><div>${t('cryptoTailMonitor.chart.time')}: ${timeStr}</div>`
+          const upVal = Array.isArray(upParam?.value) ? upParam?.value[1] : upParam?.value
+          const downVal = Array.isArray(downParam?.value) ? downParam?.value[1] : downParam?.value
+          if (upVal != null && !Number.isNaN(upVal)) html += `<div>Up: ${Number(upVal).toFixed(4)}</div>`
+          if (downVal != null && !Number.isNaN(downVal)) html += `<div>Down: ${Number(downVal).toFixed(4)}</div>`
+          html += '</div>'
+          return html
+        }
+      },
+      legend: {
+        show: true,
+        top: 0,
+        data: [t('cryptoTailMonitor.chart.marketUp'), t('cryptoTailMonitor.chart.marketDown')]
+      },
+      grid: {
+        left: '3%',
+        right: '4%',
+        bottom: '3%',
+        top: '15%',
+        containLabel: true
+      },
+      xAxis: {
+        type: 'time',
+        min: xAxisMin,
+        max: periodEndMs,
+        axisLabel: {
+          formatter: (val: number) => {
+            const offsetSec = Math.floor(val / 1000) - periodStartUnixSec
+            const mins = Math.floor(offsetSec / 60)
+            const secs = Math.abs(offsetSec) % 60
+            return `${mins.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`
+          }
+        }
+      },
+      yAxis: {
+        type: 'value',
+        min: 0,
+        max: 1,
+        interval: 0.2,
+        axisLabel: { formatter: (v: number) => v.toFixed(1) }
+      },
+      series: [
+        {
+          name: t('cryptoTailMonitor.chart.marketUp'),
+          type: 'line',
+          data: finalMarketUp,
+          smooth: true,
+          symbol: 'circle',
+          symbolSize: 4,
+          showSymbol: true,
+          connectNulls: true,
+          lineStyle: { width: 2, color: '#1890ff' },
+          itemStyle: { color: '#1890ff' },
+          markArea: {
+            silent: true,
+            itemStyle: { color: 'rgba(82, 196, 26, 0.12)' },
+            data: [[{ yAxis: minPrice }, { yAxis: maxPrice }]]
+          },
+          markLine: timeWindowMarkLine.length > 0 ? { symbol: ['none', 'none'], data: timeWindowMarkLine } : undefined
+        },
+        {
+          name: t('cryptoTailMonitor.chart.marketDown'),
+          type: 'line',
+          data: finalMarketDown,
+          smooth: true,
+          symbol: 'circle',
+          symbolSize: 4,
+          showSymbol: true,
+          connectNulls: true,
+          lineStyle: { width: 2, color: '#fa8c16' },
+          itemStyle: { color: '#fa8c16' }
+        }
+      ]
+    }
+
+    marketChartInstance.current.setOption(option, true)
+    marketChartInstance.current.resize()
+  }, [priceHistory, initData, pushData, firstDataTime, hasSwitchedPeriod, t])
+
+  // 格式化剩余时间
+  const formatRemainingTime = (seconds: number): string => {
+    const mins = Math.floor(seconds / 60)
+    const secs = seconds % 60
+    return `${mins}:${secs.toString().padStart(2, '0')}`
+  }
+
+  // 显示 BTC 价格（最新价、价差、开盘价均为 USDC）
+  const openPrice = pushData?.openPriceBtc ?? initData?.openPriceBtc
+  const currentPrice = pushData?.currentPriceBtc
+  const currentSpread = pushData?.spreadBtc
+  const minSpreadUpStr = pushData?.minSpreadLineUp ?? initData?.autoMinSpreadUp
+  const minSpreadDownStr = pushData?.minSpreadLineDown ?? initData?.autoMinSpreadDown
+  const minSpreadUpVal = minSpreadUpStr != null && minSpreadUpStr !== '' ? parseFloat(minSpreadUpStr) : null
+  const minSpreadDownVal = minSpreadDownStr != null && minSpreadDownStr !== '' ? parseFloat(minSpreadDownStr) : null
+  const minSpreadLineNum = [minSpreadUpVal, minSpreadDownVal].filter((v): v is number => v != null && !Number.isNaN(v))
+  const spreadBelowThreshold = currentSpread != null && currentSpread !== '' && minSpreadLineNum.length > 0 &&
+    parseFloat(currentSpread) < Math.min(...minSpreadLineNum)
+
+  return (
+    <div style={{ padding: isMobile ? 12 : 24 }}>
+      <Title level={2} style={{ marginBottom: 16, fontSize: isMobile ? 20 : 24 }}>
+        {t('cryptoTailMonitor.title')}
+      </Title>
+
+      {/* 顶部控制区 */}
+      <Card style={{ marginBottom: 16 }}>
+        <Space wrap size="middle">
+          <Space>
+            <Text strong>{t('cryptoTailMonitor.selectStrategy')}</Text>
+            <Select
+              style={{ minWidth: isMobile ? 200 : 300 }}
+              loading={strategiesLoading}
+              value={selectedStrategyId}
+              onChange={(id) => setSelectedStrategyId(id)}
+              placeholder={t('cryptoTailMonitor.selectStrategyPlaceholder')}
+              options={strategies.map(s => ({
+                label: `${s.name || s.marketSlugPrefix} (${s.intervalSeconds === 300 ? '5m' : '15m'})`,
+                value: s.id
+              }))}
+            />
+          </Space>
+          {selectedStrategyId && (
+            <Space>
+              <Text strong>{t('cryptoTailMonitor.periodSwitch.mode')}</Text>
+              <Radio.Group
+                value={periodSwitchMode}
+                onChange={(e) => {
+                  const newMode = e.target.value
+                  setPeriodSwitchMode(newMode)
+                  localStorage.setItem(PERIOD_SWITCH_MODE_KEY, newMode)
+                  if (newMode === 'auto' && isViewingOldPeriod && pendingPeriodData) {
+                    handleSwitchToLatestPeriod()
+                  }
+                }}
+                optionType="button"
+                buttonStyle="solid"
+                size="small"
+              >
+                <Tooltip title={t('cryptoTailMonitor.periodSwitch.autoDesc')}>
+                  <Radio.Button value="auto">{t('cryptoTailMonitor.periodSwitch.auto')}</Radio.Button>
+                </Tooltip>
+                <Tooltip title={t('cryptoTailMonitor.periodSwitch.manualDesc')}>
+                  <Radio.Button value="manual">{t('cryptoTailMonitor.periodSwitch.manual')}</Radio.Button>
+                </Tooltip>
+              </Radio.Group>
+            </Space>
+          )}
+        </Space>
+      </Card>
+
+      {initLoading ? (
+        <Spin spinning style={{ display: 'flex', justifyContent: 'center', padding: 100 }} />
+      ) : !initData ? (
+        <Empty description={t('cryptoTailMonitor.noData')} />
+      ) : (
+        <>
+          {/* 状态卡片：最小宽度填满整行，间距 16 */}
+          <Row gutter={16} style={{ marginBottom: 16 }}>
+            <Col flex="1" style={{ minWidth: 140 }}>
+              <Card size="small" style={{ width: '100%', minWidth: 0 }}>
+                <Statistic
+                  title={t('cryptoTailMonitor.stat.openPrice')}
+                  value={openPrice ? formatNumber(openPrice, 2) : '-'}
+                  precision={2}
+                />
+              </Card>
+            </Col>
+            <Col flex="1" style={{ minWidth: 140 }}>
+              <Card size="small" style={{ width: '100%', minWidth: 0 }}>
+                <Statistic
+                  title={t('cryptoTailMonitor.stat.currentPrice')}
+                  value={currentPrice ? formatNumber(currentPrice, 2) : '-'}
+                  precision={2}
+                  valueStyle={{ color: isMobile ? undefined : '#1890ff' }}
+                />
+              </Card>
+            </Col>
+            <Col flex="1" style={{ minWidth: 140 }}>
+              <Card size="small" style={{ width: '100%', minWidth: 0 }}>
+                <Statistic
+                  title={t('cryptoTailMonitor.stat.spread')}
+                  value={(() => {
+                    if (currentSpread == null || currentSpread === '') return '-'
+                    const num = parseFloat(currentSpread)
+                    if (Number.isNaN(num)) return '-'
+                    const formatted = formatNumber(currentSpread, 2)
+                    return num >= 0 ? `+${formatted}` : formatted
+                  })()}
+                  precision={2}
+                  valueStyle={{
+                    color: spreadBelowThreshold ? '#ff4d4f' : undefined
+                  }}
+                />
+              </Card>
+            </Col>
+            <Col flex="1" style={{ minWidth: 140 }}>
+              <Card size="small" style={{ width: '100%', minWidth: 0 }}>
+                <Statistic
+                  title={t('cryptoTailMonitor.stat.remainingTime')}
+                  value={pushData ? formatRemainingTime(pushData.remainingSeconds) : '-'}
+                  prefix={<ClockCircleOutlined />}
+                  valueStyle={{
+                    color: pushData && pushData.remainingSeconds < 60 ? '#ff4d4f' : undefined
+                  }}
+                />
+              </Card>
+            </Col>
+            <Col flex="1" style={{ minWidth: 140 }}>
+              <Card size="small" style={{ width: '100%', minWidth: 0 }}>
+                <Statistic
+                  title={(initData.spreadDirection ?? 'MIN') === 'MAX' ? t('cryptoTailMonitor.stat.configuredSpreadMax') : t('cryptoTailMonitor.stat.configuredSpreadMin')}
+                  valueRender={() => {
+                    const mode = initData.minSpreadMode ?? 'NONE'
+                    if (mode === 'NONE') return <Text type="secondary">-</Text>
+                    if (mode === 'FIXED') {
+                      const v = initData.minSpreadValue
+                      return v != null && v !== '' ? formatNumber(v, 2) : '-'
+                    }
+                    const up = minSpreadUpStr != null && minSpreadUpStr !== '' ? formatNumber(minSpreadUpStr, 2) : null
+                    const down = minSpreadDownStr != null && minSpreadDownStr !== '' ? formatNumber(minSpreadDownStr, 2) : null
+                    if (up == null && down == null) return <Text type="secondary">-</Text>
+                    return (
+                      <Text style={{ fontSize: 13, lineHeight: 1.4 }}>
+                        {up != null && <span style={{ display: 'block' }}>Up: {up}</span>}
+                        {down != null && <span style={{ display: 'block' }}>Down: {down}</span>}
+                      </Text>
+                    )
+                  }}
+                />
+              </Card>
+            </Col>
+          </Row>
+
+          {/* 手动模式下：周期结束提示 */}
+          {periodSwitchMode === 'manual' && isViewingOldPeriod && (
+            <Alert
+              type="warning"
+              showIcon
+              icon={<InfoCircleOutlined />}
+              style={{ marginBottom: 16 }}
+              message={t('cryptoTailMonitor.periodSwitch.periodEnded')}
+              description={
+                <Space direction="vertical" size="small">
+                  <Text>{t('cryptoTailMonitor.periodSwitch.newPeriodAvailable')}</Text>
+                  <Button
+                    type="primary"
+                    icon={<SyncOutlined />}
+                    onClick={handleSwitchToLatestPeriod}
+                    size="small"
+                  >
+                    {t('cryptoTailMonitor.periodSwitch.switchToLatest')}
+                  </Button>
+                </Space>
+              }
+            />
+          )}
+
+          {/* 价格区间提示 */}
+          <Alert
+            type="info"
+            showIcon
+            style={{ marginBottom: 16 }}
+            message={`${t('cryptoTailMonitor.priceRange')}: ${formatNumber(initData.minPrice, 2)} ~ ${formatNumber(initData.maxPrice, 2)} | ${t('cryptoTailMonitor.timeWindow')}: ${Math.floor(initData.windowStartSeconds / 60)}:${(initData.windowStartSeconds % 60).toString().padStart(2, '0')} ~ ${Math.floor(initData.windowEndSeconds / 60)}:${(initData.windowEndSeconds % 60).toString().padStart(2, '0')}`}
+          />
+
+          {/* 价格分时图 */}
+          <Card title={`${initData.marketSlugPrefix || 'BTC'} ${t('cryptoTailMonitor.chart.priceChart')}`}>
+            <div
+              ref={chartRef}
+              style={{
+                width: '100%',
+                height: isMobile ? 200 : 240
+              }}
+            />
+          </Card>
+
+          {/* 市场分时图 */}
+          <Card
+            title={t('cryptoTailMonitor.chart.marketTitle')}
+            extra={
+              pushData?.currentPriceUp != null || pushData?.currentPriceDown != null ? (
+                <Space size="middle">
+                  <Text type="secondary">{t('cryptoTailMonitor.chart.latestPrice')}:</Text>
+                  {pushData.currentPriceUp != null && pushData.currentPriceUp !== '' && (
+                    <Text>Up {formatNumber(pushData.currentPriceUp, 4)}</Text>
+                  )}
+                  {pushData.currentPriceDown != null && pushData.currentPriceDown !== '' && (
+                    <Text>Down {formatNumber(pushData.currentPriceDown, 4)}</Text>
+                  )}
+                </Space>
+              ) : null
+            }
+            style={{ marginTop: 16 }}
+          >
+            <div
+              ref={marketChartRef}
+              style={{
+                width: '100%',
+                height: isMobile ? 200 : 240
+              }}
+            />
+          </Card>
+
+          {/* 策略信息 */}
+          <Card title={t('cryptoTailMonitor.strategyInfo.title')} style={{ marginTop: 16 }}>
+            <Row gutter={[16, 8]}>
+              <Col span={12}>
+                <Text type="secondary">{t('cryptoTailMonitor.strategyInfo.market')}: </Text>
+                <Text>{pushData?.marketTitle ?? initData.marketTitle}</Text>
+              </Col>
+              <Col span={12}>
+                <Text type="secondary">{t('cryptoTailMonitor.strategyInfo.interval')}: </Text>
+                <Text>{initData.intervalSeconds === 300 ? '5m' : '15m'}</Text>
+              </Col>
+              <Col span={12}>
+                <Text type="secondary">{t('cryptoTailMonitor.strategyInfo.account')}: </Text>
+                <Text>{initData.accountName || `#${initData.accountId}`}</Text>
+              </Col>
+              <Col span={12}>
+                <Text type="secondary">{t('cryptoTailMonitor.strategyInfo.spreadMode')}: </Text>
+                <Text>{initData.minSpreadMode}</Text>
+                {initData.minSpreadMode === 'FIXED' && initData.minSpreadValue && (
+                  <Text> ({formatNumber(initData.minSpreadValue, 4)})</Text>
+                )}
+              </Col>
+              <Col span={12}>
+                <Text type="secondary">{t('cryptoTailMonitor.strategyInfo.spreadDirection')}: </Text>
+                <Text>{(initData.spreadDirection ?? 'MIN') === 'MAX' ? t('cryptoTailMonitor.stat.configuredSpreadMax') : t('cryptoTailMonitor.stat.configuredSpreadMin')}</Text>
+              </Col>
+            </Row>
+          </Card>
+        </>
+      )}
+    </div>
+  )
+}
+
+export default CryptoTailMonitor
diff --git a/frontend/src/pages/SystemUpdate.tsx b/frontend/src/pages/SystemUpdate.tsx
index 5b4a340..aaee788 100644
--- a/frontend/src/pages/SystemUpdate.tsx
+++ b/frontend/src/pages/SystemUpdate.tsx
@@ -6,6 +6,7 @@ import {
     CheckCircleOutlined,
     ExclamationCircleOutlined
 } from '@ant-design/icons'
+import { useTranslation } from 'react-i18next'
 import { apiClient } from '../services/api'
 import ReactMarkdown from 'react-markdown'
 import remarkGfm from 'remark-gfm'
@@ -29,13 +30,14 @@ interface UpdateStatus {
 }
 
 const SystemUpdate: React.FC = () => {
+    const { t, i18n } = useTranslation()
     const [currentVersion, setCurrentVersion] = useState('')
     const [updateChecking, setUpdateChecking] = useState(false)
     const [updateInfo, setUpdateInfo] = useState<UpdateInfo | null>(null)
     const [updateStatus, setUpdateStatus] = useState<UpdateStatus>({
         updating: false,
         progress: 0,
-        message: '就绪',
+        message: '',
         error: null
     })
 
@@ -62,7 +64,7 @@ const SystemUpdate: React.FC = () => {
                 setUpdateStatus({
                     updating: response.data.data.updating,
                     progress: response.data.data.progress || 0,
-                    message: response.data.data.message || '就绪',
+                    message: response.data.data.message || '',
                     error: response.data.data.error || null
                 })
             }
@@ -83,15 +85,15 @@ const SystemUpdate: React.FC = () => {
                 setUpdateInfo(data.data)
 
                 if (data.data.hasUpdate) {
-                    message.success(`发现新版本: ${data.data.latestVersion}`)
+                    message.success(t('systemUpdate.hasNewVersion', { version: data.data.latestVersion }))
                 } else {
-                    message.info('当前已是最新版本')
+                    message.info(t('systemUpdate.alreadyLatest'))
                 }
             } else {
-                message.error(data.message || '检查更新失败')
+                message.error(data.message || t('systemUpdate.checkFailed'))
             }
         } catch (error: any) {
-            message.error(error.message || '检查更新失败')
+            message.error(error.message || t('systemUpdate.checkFailed'))
         } finally {
             setUpdateChecking(false)
         }
@@ -99,25 +101,25 @@ const SystemUpdate: React.FC = () => {
 
     const handleExecuteUpdate = () => {
         Modal.confirm({
-            title: '确认更新',
+            title: t('systemUpdate.confirmTitle'),
             icon: <ExclamationCircleOutlined />,
             content: (
                 <div>
-                    <p>确定要更新到版本 <strong>{updateInfo?.latestVersion}</strong> 吗？</p>
-                    <p>更新过程中系统将暂时不可用（约30-60秒）。</p>
-                    <p>更新完成后页面将自动刷新。</p>
+                    <p>{t('systemUpdate.confirmContent1', { version: updateInfo?.latestVersion })}</p>
+                    <p>{t('systemUpdate.confirmContent2')}</p>
+                    <p>{t('systemUpdate.confirmContent3')}</p>
                 </div>
             ),
-            okText: '立即更新',
+            okText: t('systemUpdate.okText'),
             okType: 'primary',
-            cancelText: '取消',
+            cancelText: t('systemUpdate.cancelText'),
             onOk: async () => {
                 try {
                     const response = await apiClient.post('/update/update', {})
                     const data = response.data
 
                     if (data.code === 0) {
-                        message.success('更新已启动，请稍候...')
+                        message.success(t('systemUpdate.updateStarted'))
 
                         // 开始轮询更新状态
                         const pollInterval = setInterval(async () => {
@@ -138,9 +140,9 @@ const SystemUpdate: React.FC = () => {
                                         clearInterval(pollInterval)
 
                                         if (statusData.data.error) {
-                                            message.error(`更新失败: ${statusData.data.error}`)
+                                            message.error(t('systemUpdate.updateFailedWithMessage', { message: statusData.data.error }))
                                         } else if (statusData.data.progress === 100) {
-                                            message.success('更新成功！页面将在3秒后刷新...')
+                                            message.success(t('systemUpdate.updateSuccessRefresh'))
                                             setTimeout(() => window.location.reload(), 3000)
                                         }
                                     }
@@ -153,19 +155,19 @@ const SystemUpdate: React.FC = () => {
                         // 5分钟后停止轮询
                         setTimeout(() => clearInterval(pollInterval), 5 * 60 * 1000)
                     } else if (data.code === 403) {
-                        message.error('需要管理员权限才能执行更新')
+                        message.error(t('systemUpdate.needAdmin'))
                     } else {
-                        message.error(data.message || '启动更新失败')
+                        message.error(data.message || t('systemUpdate.startFailed'))
                     }
                 } catch (error: any) {
-                    message.error(error.message || '启动更新失败')
+                    message.error(error.message || t('systemUpdate.startFailed'))
                 }
             }
         })
     }
 
     const formatDate = (dateString: string) => {
-        return new Date(dateString).toLocaleString('zh-CN')
+        return new Date(dateString).toLocaleString(i18n.language === 'zh-CN' ? 'zh-CN' : i18n.language === 'zh-TW' ? 'zh-TW' : 'en')
     }
 
     return (
@@ -173,7 +175,7 @@ const SystemUpdate: React.FC = () => {
             title={
                 <Space>
                     <CloudUploadOutlined style={{ fontSize: '18px', color: '#1890ff' }} />
-                    <span style={{ fontSize: '16px', fontWeight: 600 }}>系统更新</span>
+                    <span style={{ fontSize: '16px', fontWeight: 600 }}>{t('systemUpdate.title')}</span>
                 </Space>
             }
             style={{ 
@@ -195,7 +197,7 @@ const SystemUpdate: React.FC = () => {
                 }}>
                     <div>
                         <div style={{ fontSize: '13px', opacity: 0.9, marginBottom: '4px' }}>
-                            当前版本
+                            {t('systemUpdate.currentVersion')}
                         </div>
                         <div style={{ fontSize: '20px', fontWeight: 600 }}>
                             v{currentVersion || 'unknown'}
@@ -208,16 +210,16 @@ const SystemUpdate: React.FC = () => {
                 {updateStatus.updating && (
                     <Alert
                         message={
-                            <span style={{ fontSize: '15px', fontWeight: 500 }}>系统正在更新</span>
+                            <span style={{ fontSize: '15px', fontWeight: 500 }}>{t('systemUpdate.updating')}</span>
                         }
                         description={
                             <div style={{ marginTop: '12px' }}>
                                 <div style={{ 
                                     marginBottom: '12px', 
                                     fontSize: '14px', 
-                                    color: '#595959' 
+                                    color: '#595959'
                                 }}>
-                                    {updateStatus.message}
+                                    {updateStatus.message || t('systemUpdate.ready')}
                                 </div>
                                 <Progress
                                     percent={updateStatus.progress}
@@ -245,7 +247,7 @@ const SystemUpdate: React.FC = () => {
 
                 {updateStatus.error && (
                     <Alert
-                        message={<span style={{ fontSize: '15px', fontWeight: 500 }}>更新失败</span>}
+                        message={<span style={{ fontSize: '15px', fontWeight: 500 }}>{t('systemUpdate.updateFailedTitle')}</span>}
                         description={
                             <div style={{ 
                                 marginTop: '8px', 
@@ -281,14 +283,14 @@ const SystemUpdate: React.FC = () => {
                                 boxShadow: '0 2px 4px rgba(24, 144, 255, 0.2)'
                             }}
                         >
-                            检查更新
+                            {t('systemUpdate.checkUpdate')}
                         </Button>
 
                         {updateInfo && !updateInfo.hasUpdate && (
                             <Alert
                                 message={
                                     <span style={{ fontSize: '15px', fontWeight: 500 }}>
-                                        当前已是最新版本
+                                        {t('systemUpdate.alreadyLatest')}
                                     </span>
                                 }
                                 type="success"
@@ -326,7 +328,7 @@ const SystemUpdate: React.FC = () => {
                                     color: '#8c8c8c',
                                     marginBottom: '6px'
                                 }}>
-                                    发现新版本
+                                    {t('systemUpdate.newVersionFound')}
                                 </div>
                                 <Space size="small">
                                     <Tag 
@@ -341,15 +343,15 @@ const SystemUpdate: React.FC = () => {
                                         v{updateInfo.latestVersion}
                                     </Tag>
                                     {updateInfo.prerelease && (
-                                        <Tag 
-                                            color="orange" 
-                                            style={{ 
+                                        <Tag
+                                            color="orange"
+                                            style={{
                                                 fontSize: '12px',
                                                 padding: '4px 12px',
                                                 borderRadius: '4px'
                                             }}
                                         >
-                                            Pre-release
+                                            {t('systemUpdate.prerelease')}
                                         </Tag>
                                     )}
                                 </Space>
@@ -367,7 +369,7 @@ const SystemUpdate: React.FC = () => {
                                 color: '#8c8c8c',
                                 marginBottom: '4px'
                             }}>
-                                发布时间
+                                {t('systemUpdate.publishedAt')}
                             </div>
                             <div style={{
                                 fontSize: '14px',
@@ -385,7 +387,7 @@ const SystemUpdate: React.FC = () => {
                                     marginBottom: '8px',
                                     fontWeight: 500
                                 }}>
-                                    更新内容
+                                    {t('systemUpdate.releaseNotes')}
                                 </div>
                                 <div style={{
                                     padding: '16px',
@@ -449,7 +451,7 @@ const SystemUpdate: React.FC = () => {
                                 boxShadow: '0 4px 12px rgba(102, 126, 234, 0.4)'
                             }}
                         >
-                            立即升级到 v{updateInfo.latestVersion}
+                            {t('systemUpdate.upgradeNow', { version: updateInfo.latestVersion })}
                         </Button>
                     </div>
                 )}
@@ -458,20 +460,20 @@ const SystemUpdate: React.FC = () => {
                 {!updateStatus.updating && !(updateInfo && updateInfo.hasUpdate) && (
                     <Alert
                         message={
-                            <span style={{ fontSize: '15px', fontWeight: 500 }}>使用说明</span>
+                            <span style={{ fontSize: '15px', fontWeight: 500 }}>{t('systemUpdate.usageTitle')}</span>
                         }
                         description={
-                            <ul style={{ 
-                                marginBottom: 0, 
+                            <ul style={{
+                                marginBottom: 0,
                                 paddingLeft: '20px',
                                 fontSize: '14px',
                                 color: '#595959',
                                 lineHeight: '1.8'
                             }}>
-                                <li>点击"检查更新"按钮检查是否有新版本</li>
-                                <li>更新过程约需30-60秒，期间系统将暂时不可用</li>
-                                <li>更新成功后页面将自动刷新</li>
-                                <li>如果更新失败，系统会自动回滚到当前版本</li>
+                                <li>{t('systemUpdate.usage1')}</li>
+                                <li>{t('systemUpdate.usage2')}</li>
+                                <li>{t('systemUpdate.usage3')}</li>
+                                <li>{t('systemUpdate.usage4')}</li>
                             </ul>
                         }
                         type="info"
diff --git a/frontend/src/services/api.ts b/frontend/src/services/api.ts
index 3428ace..4c8c71a 100644
--- a/frontend/src/services/api.ts
+++ b/frontend/src/services/api.ts
@@ -446,7 +446,7 @@ export const apiService = {
   },
 
   /**
-   * 尾盘策略 API
+   * 加密价差策略 API
    */
   cryptoTailStrategy: {
     list: (data: { accountId?: number; enabled?: boolean } = {}) =>
@@ -497,7 +497,9 @@ export const apiService = {
     marketOptions: () =>
       apiClient.post<ApiResponse<import('../types').CryptoTailMarketOptionDto[]>>('/crypto-tail-strategy/market-options', {}),
     autoMinSpread: (data: { intervalSeconds: number }) =>
-      apiClient.post<ApiResponse<import('../types').CryptoTailAutoMinSpreadResponse>>('/crypto-tail-strategy/auto-min-spread', data)
+      apiClient.post<ApiResponse<import('../types').CryptoTailAutoMinSpreadResponse>>('/crypto-tail-strategy/auto-min-spread', data),
+    monitorInit: (strategyId: number) =>
+      apiClient.post<ApiResponse<import('../types').CryptoTailMonitorInitResponse>>('/crypto-tail-strategy/monitor/init', { strategyId })
   },
   
   /**
diff --git a/frontend/src/types/index.ts b/frontend/src/types/index.ts
index 8dcd50d..7e1189b 100644
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -1036,7 +1036,7 @@ export interface BacktestTaskDto {
 }
 
 /**
- * 尾盘策略
+ * 加密价差策略
  */
 export interface CryptoTailStrategyDto {
   id: number
@@ -1076,7 +1076,7 @@ export interface CryptoTailAutoMinSpreadResponse {
 }
 
 /**
- * 尾盘策略触发记录
+ * 加密价差策略触发记录
  */
 export interface CryptoTailStrategyTriggerDto {
   id: number
@@ -1098,7 +1098,7 @@ export interface CryptoTailStrategyTriggerDto {
 }
 
 /**
- * 尾盘策略市场选项
+ * 加密价差策略市场选项
  */
 export interface CryptoTailMarketOptionDto {
   slug: string
@@ -1107,3 +1107,99 @@ export interface CryptoTailMarketOptionDto {
   periodStartUnix: number
   endDate?: string
 }
+
+/**
+ * 加密价差策略监控初始化响应
+ */
+export interface CryptoTailMonitorInitResponse {
+  /** 策略ID */
+  strategyId: number
+  /** 策略名称 */
+  name: string
+  /** 账户ID */
+  accountId: number
+  /** 账户名称 */
+  accountName: string
+  /** 市场 slug 前缀 */
+  marketSlugPrefix: string
+  /** 市场标题 */
+  marketTitle: string
+  /** 周期秒数 (300=5m, 900=15m) */
+  intervalSeconds: number
+  /** 当前周期开始时间 (Unix 秒) */
+  periodStartUnix: number
+  /** 时间窗口开始秒数 */
+  windowStartSeconds: number
+  /** 时间窗口结束秒数 */
+  windowEndSeconds: number
+  /** 最低价格 */
+  minPrice: string
+  /** 最高价格 */
+  maxPrice: string
+  /** 最小价差模式: NONE, FIXED, AUTO */
+  minSpreadMode: string
+  /** 价差方向: MIN（显示周期内最小价差）, MAX（显示周期内最大价差） */
+  spreadDirection?: string
+  /** 最小价差数值 (FIXED 时有值) */
+  minSpreadValue?: string
+  /** 自动计算的最小价差 (Up方向) */
+  autoMinSpreadUp?: string
+  /** 自动计算的最小价差 (Down方向) */
+  autoMinSpreadDown?: string
+  /** BTC 开盘价 USDC（来自币安 K 线） */
+  openPriceBtc?: string
+  /** Up tokenId */
+  tokenIdUp?: string
+  /** Down tokenId */
+  tokenIdDown?: string
+  /** 当前时间 (毫秒时间戳) */
+  currentTimestamp: number
+  /** 是否启用 */
+  enabled: boolean
+}
+
+/**
+ * 加密价差策略监控实时推送数据
+ */
+export interface CryptoTailMonitorPushData {
+  /** 策略ID */
+  strategyId: number
+  /** 推送时间 (毫秒时间戳) */
+  timestamp: number
+  /** 当前周期开始时间 (Unix 秒) */
+  periodStartUnix: number
+  /** 当前周期市场标题（周期切换时更新） */
+  marketTitle?: string
+  /** 当前价格 (Up方向，来自订单簿) */
+  currentPriceUp?: string
+  /** 当前价格 (Down方向，来自订单簿) */
+  currentPriceDown?: string
+  /** 当前价差 (Up方向: 1 - currentPriceUp) */
+  spreadUp?: string
+  /** 当前价差 (Down方向: currentPriceUp) */
+  spreadDown?: string
+  /** 最小价差线 (Up方向，USDC) */
+  minSpreadLineUp?: string
+  /** 最小价差线 (Down方向，USDC) */
+  minSpreadLineDown?: string
+  /** BTC 开盘价 USDC */
+  openPriceBtc?: string
+  /** BTC 最新价 USDC */
+  currentPriceBtc?: string
+  /** BTC 价差 USDC（currentPriceBtc - openPriceBtc） */
+  spreadBtc?: string
+  /** 周期剩余秒数 */
+  remainingSeconds: number
+  /** 是否在时间窗口内 */
+  inTimeWindow: boolean
+  /** 是否在价格区间内 (Up方向) */
+  inPriceRangeUp: boolean
+  /** 是否在价格区间内 (Down方向) */
+  inPriceRangeDown: boolean
+  /** 是否已触发 */
+  triggered: boolean
+  /** 触发方向: UP, DOWN, null */
+  triggerDirection?: string
+  /** 周期是否已结束 */
+  periodEnded: boolean
+}