From b081921d0c2ccb911513e4caeaa4072d92f6566d Mon Sep 17 00:00:00 2001
From: cwchen <1048842385@qq.com>
Date: Thu, 8 Jan 2026 16:54:26 +0800
Subject: [PATCH] =?UTF-8?q?=E8=A7=86=E9=A2=91=E6=92=AD=E6=94=BE=E4=BF=AE?=
 =?UTF-8?q?=E6=94=B9?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/views/device/video/index.vue | 410 ++++++++++++++-----------------
 1 file changed, 178 insertions(+), 232 deletions(-)

diff --git a/src/views/device/video/index.vue b/src/views/device/video/index.vue
index bc84be8..b795a06 100644
--- a/src/views/device/video/index.vue
+++ b/src/views/device/video/index.vue
@@ -1,6 +1,5 @@
 <template>
     <div class="video-monitor-container">
-        <!-- 顶部状态栏 -->
         <el-card class="top-bar-card" shadow="never">
             <div class="top-bar">
                 <div class="status-bar">
@@ -14,8 +13,12 @@
                         <i class="el-icon-time"></i>
                         {{ currentTime }}
                     </div>
-                    <!-- 画线按钮组 -->
                     <div class="draw-line-buttons">
+                        <el-button type="default" plain class="fullscreen-btn" @click="toggleFullscreen"
+                            icon="el-icon-full-screen">
+                            {{ isFullscreen ? '退出全屏' : '全屏监控' }}
+                        </el-button>
+
                         <el-button v-if="!isDrawingMode" type="primary" class="draw-line-btn" @click="handleDrawLine"
                             icon="el-icon-edit">
                             画线
@@ -35,25 +38,19 @@
             </div>
         </el-card>
 
-        <!-- 视频播放区域 -->
         <el-card class="video-card" shadow="never" :body-style="{ padding: '0', height: '100%' }">
             <div class="video-wrapper">
                 <div class="video-container" ref="videoContainer">
                     <video ref="videoPlayer" class="video-player" :src="videoUrl" autoplay muted controls
-                        @loadedmetadata="handleVideoLoaded" 
-                        @error="handleVideoError"
-                        >
+                        @loadedmetadata="handleVideoLoaded" @error="handleVideoError" controlsList="nofullscreen">
                         您的浏览器不支持视频播放
                     </video>
 
-                    <!-- 画线画布覆盖层 -->
                     <canvas ref="drawCanvas" class="draw-canvas" :class="{ active: isDrawingMode }"
                         @mousedown="startDrawing" @mousemove="draw" @mouseup="stopDrawing"
                         @mouseleave="stopDrawing"></canvas>
-                    <!-- 已保存的画线显示层（只读） -->
                     <canvas ref="savedLineCanvas" class="saved-line-canvas"></canvas>
 
-                    <!-- 视频加载提示 -->
                     <div v-if="!videoUrl" class="video-placeholder">
                         <i class="el-icon-video-camera"></i>
                         <p>暂无视频流</p>
@@ -72,21 +69,27 @@ export default {
     data() {
         return {
             currentTime: '',
-            videoUrl: '', // 视频流地址，可以从接口获取
-            isDrawingMode: false, // 是否开启画线模式
+            videoUrl: '',
+            isDrawingMode: false,
             isDrawing: false,
             startX: 0,
             startY: 0,
             endX: 0,
             endY: 0,
-            line: null, // 保存画线的数据（只允许一条线）
-            savedLine: null, // 已保存的画线数据（保存成功后保留）
-            initialLine: null, // 初始的线（默认线）
-            currentLine: null, // 当前正在画的线
-            detectedVehicles: [], // 检测到的车辆数据
+            line: null,
+            savedLine: null,
+            initialLine: null,
+            currentLine: null,
+            detectedVehicles: [],
             timer: null,
-            saving: false, // 保存中状态
-            videoErrorShown: false, // 是否已显示视频错误提示
+            saving: false,
+            videoErrorShown: false,
+            // 新增：全屏状态标记
+            isFullscreen: false,
+            // 新增：记录上一次容器尺寸，用于计算缩放比例
+            lastContainerWidth: 0,
+            lastContainerHeight: 0,
+            resizeObserver: null,
             lineInfo: {
                 equipmentName: '',
                 equipmentStatus: '',
@@ -114,23 +117,130 @@ export default {
             this.updateTime()
         }, 1000)
 
-        // 初始化画布
+        // 初始化 ResizeObserver 监听容器大小变化
+        this.initResizeObserver()
+
+        // 监听全屏变化事件（处理 ESC 退出全屏的情况）
+        document.addEventListener('fullscreenchange', this.onFullscreenChange)
+        document.addEventListener('webkitfullscreenchange', this.onFullscreenChange)
+        document.addEventListener('mozfullscreenchange', this.onFullscreenChange)
+        document.addEventListener('MSFullscreenChange', this.onFullscreenChange)
+
         this.$nextTick(() => {
             this.initCanvas()
-            // 初始化默认线（可以从接口获取，这里使用示例数据）
             this.initInitialLine()
         })
 
-        // 模拟加载视频（实际应该从接口获取）
         this.loadVideoStream()
     },
     beforeDestroy() {
         if (this.timer) {
             clearInterval(this.timer)
         }
+        // 销毁监听器
+        if (this.resizeObserver) {
+            this.resizeObserver.disconnect()
+        }
+        document.removeEventListener('fullscreenchange', this.onFullscreenChange)
+        document.removeEventListener('webkitfullscreenchange', this.onFullscreenChange)
+        document.removeEventListener('mozfullscreenchange', this.onFullscreenChange)
+        document.removeEventListener('MSFullscreenChange', this.onFullscreenChange)
     },
     methods: {
-        /** 更新时间 */
+        /** 初始化 ResizeObserver */
+        initResizeObserver() {
+            const container = this.$refs.videoContainer
+            if (!container) return
+
+            // 记录初始尺寸
+            this.lastContainerWidth = container.offsetWidth
+            this.lastContainerHeight = container.offsetHeight
+
+            this.resizeObserver = new ResizeObserver(entries => {
+                for (let entry of entries) {
+                    // 使用 requestAnimationFrame 避免频繁触发
+                    requestAnimationFrame(() => {
+                        this.handleResize(entry.contentRect)
+                    })
+                }
+            })
+            this.resizeObserver.observe(container)
+        },
+
+        /** 处理容器大小变化（全屏或窗口缩放）核心逻辑 */
+        handleResize(rect) {
+            const newWidth = rect.width
+            const newHeight = rect.height
+
+            // 防止为0的情况
+            if (newWidth === 0 || newHeight === 0) return
+
+            // 1. 计算缩放比例
+            const scaleX = newWidth / this.lastContainerWidth
+            const scaleY = newHeight / this.lastContainerHeight
+
+            // 2. 更新 Canvas 物理分辨率以匹配新的 CSS 尺寸
+            const drawCanvas = this.$refs.drawCanvas
+            const savedCanvas = this.$refs.savedLineCanvas
+
+            if (drawCanvas) {
+                drawCanvas.width = newWidth
+                drawCanvas.height = newHeight
+            }
+            if (savedCanvas) {
+                savedCanvas.width = newWidth
+                savedCanvas.height = newHeight
+            }
+
+            // 3. 按比例更新所有线的坐标
+            const scaleLine = (l) => {
+                if (!l) return null
+                return {
+                    startX: l.startX * scaleX,
+                    startY: l.startY * scaleY,
+                    endX: l.endX * scaleX,
+                    endY: l.endY * scaleY
+                }
+            }
+
+            if (this.initialLine) this.initialLine = scaleLine(this.initialLine)
+            if (this.savedLine) this.savedLine = scaleLine(this.savedLine)
+            if (this.line) this.line = scaleLine(this.line)
+            if (this.currentLine) this.currentLine = scaleLine(this.currentLine)
+
+            // 4. 更新记录的尺寸
+            this.lastContainerWidth = newWidth
+            this.lastContainerHeight = newHeight
+
+            // 5. 重绘
+            this.redrawCanvas()
+        },
+
+        /** 全屏切换 */
+        toggleFullscreen() {
+            const container = this.$refs.videoContainer
+            if (!document.fullscreenElement) {
+                // 进入全屏
+                if (container.requestFullscreen) {
+                    container.requestFullscreen()
+                } else if (container.webkitRequestFullscreen) {
+                    container.webkitRequestFullscreen()
+                } else if (container.msRequestFullscreen) {
+                    container.msRequestFullscreen()
+                }
+            } else {
+                // 退出全屏
+                if (document.exitFullscreen) {
+                    document.exitFullscreen()
+                }
+            }
+        },
+
+        /** 监听全屏状态变化 */
+        onFullscreenChange() {
+            this.isFullscreen = !!document.fullscreenElement
+        },
+
         updateTime() {
             const now = new Date()
             const year = now.getFullYear()
@@ -142,12 +252,15 @@ export default {
             this.currentTime = `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`
         },
 
-        /** 初始化画布 */
         initCanvas() {
             const canvas = this.$refs.drawCanvas
             const savedCanvas = this.$refs.savedLineCanvas
             const container = this.$refs.videoContainer
             if (container) {
+                // 确保更新 lastContainerWidth
+                this.lastContainerWidth = container.offsetWidth
+                this.lastContainerHeight = container.offsetHeight
+
                 if (canvas) {
                     canvas.width = container.offsetWidth
                     canvas.height = container.offsetHeight
@@ -155,7 +268,6 @@ export default {
                 if (savedCanvas) {
                     savedCanvas.width = container.offsetWidth
                     savedCanvas.height = container.offsetHeight
-                    // 如果有已保存的线或初始线，重新绘制
                     if (this.savedLine || this.line || this.initialLine) {
                         this.redrawCanvas()
                     }
@@ -163,7 +275,6 @@ export default {
             }
         },
 
-        /** 初始化默认线 */
         async initInitialLine() {
             try {
                 const container = this.$refs.videoContainer
@@ -172,14 +283,11 @@ export default {
                 const containerWidth = container.offsetWidth || 1920
                 const containerHeight = container.offsetHeight || 1080
 
-                // 调用接口获取画线详情
                 const res = await getLineDetailAPI({})
 
                 if (res.code === 200 && res.data) {
                     const data = res.data
                     this.lineInfo = data
-
-                    // 如果有画线数据，将百分比坐标转换为像素坐标
                     if (data.startX && data.startY && data.endX && data.endY) {
                         this.initialLine = {
                             startX: (parseFloat(data.startX) / 100) * containerWidth,
@@ -187,8 +295,6 @@ export default {
                             endX: (parseFloat(data.endX) / 100) * containerWidth,
                             endY: (parseFloat(data.endY) / 100) * containerHeight
                         }
-
-                        // 设置为已保存的线并显示
                         this.savedLine = { ...this.initialLine }
                         this.redrawCanvas()
                     }
@@ -198,95 +304,71 @@ export default {
             }
         },
 
-        /** 处理画线按钮点击 */
         handleDrawLine() {
             this.isDrawingMode = true
-            // 不清除已保存的线，保留旧线显示
-            this.line = null // 重置当前画线数据
-            this.clearCanvas() // 清除当前画布（只清除正在画的线）
-            // 如果有已保存的线，重新绘制
+            this.line = null
+            this.clearCanvas()
             if (this.savedLine) {
                 this.redrawCanvas()
             }
-            this.$message.success('画线模式已开启，在视频上按住鼠标左键拖动即可画线（只能画一条线）')
+            this.$message.success('画线模式已开启，在视频上按住鼠标左键拖动即可画线')
         },
 
-        /** 保存画线 */
         async handleSaveLines() {
-            // 如果有已保存的线，可以继续保存（更新保存）
-            // 如果没有新画的线，但有已保存的线，也可以保存（更新保存）
             const lineToSave = this.line || this.savedLine
-
             if (!lineToSave) {
                 this.$message.warning('请先画线后再保存')
                 return
             }
-
             this.saving = true
             try {
-                // 获取视频容器的尺寸，用于计算相对坐标
                 const container = this.$refs.videoContainer
                 const containerWidth = container ? container.offsetWidth : 1920
                 const containerHeight = container ? container.offsetHeight : 1080
 
-                // 准备保存的数据，将像素坐标转换为相对坐标（百分比），并转换为字符串
                 const params = {
                     startX: String(((lineToSave.startX / containerWidth) * 100).toFixed(2)),
                     startY: String(((lineToSave.startY / containerHeight) * 100).toFixed(2)),
                     endX: String(((lineToSave.endX / containerWidth) * 100).toFixed(2)),
                     endY: String(((lineToSave.endY / containerHeight) * 100).toFixed(2))
                 }
-
                 const res = await updateLineAPI(params)
-
                 if (res.code === 200) {
                     this.$message.success('画线数据保存成功')
-                    // 保存成功后，将当前线保存到已保存的线，同时更新初始线
                     if (this.line) {
                         const newLine = { ...this.line }
                         this.savedLine = newLine
-                        // 保存成功后，同时更新初始线为新保存的线
                         this.initialLine = { ...newLine }
                         this.line = null
                     }
-                    // 关闭画线模式，但保留画线在画布上
                     this.isDrawingMode = false
-                    // 清除当前画布
                     this.clearCanvas()
-                    // 重绘已保存的画线（只显示最新的线）
                     this.redrawCanvas()
                 } else {
                     this.$message.error(res.msg || '保存失败')
                 }
             } catch (error) {
                 console.error('保存画线数据失败:', error)
-                // this.$message.error('保存失败，请稍后重试')
             } finally {
                 this.saving = false
             }
         },
 
-        /** 取消画线 */
         handleCancelLines() {
-            // 如果初始线还在，使用初始线
             if (this.initialLine) {
                 this.isDrawingMode = false
-                this.line = null // 清除当前正在画的线
-                this.clearCanvas() // 清除当前画布
-                // 恢复使用初始线
+                this.line = null
+                this.clearCanvas()
                 this.savedLine = { ...this.initialLine }
                 this.redrawCanvas()
                 this.$message.info('已取消画线模式，恢复初始线')
             } else if (this.savedLine) {
-                // 如果有已保存的线（但不是初始线），只关闭画线模式，不清空线
                 this.isDrawingMode = false
-                this.line = null // 清除当前正在画的线
-                this.clearCanvas() // 清除当前画布
-                // 保留已保存的画线，重新绘制
+                this.line = null
+                this.clearCanvas()
                 this.redrawCanvas()
                 this.$message.info('已取消画线模式')
             } else {
-                // 如果没有已保存的线，清除所有画线
                 this.$confirm('确定要取消画线吗？画线将被清除', '提示', {
                     confirmButtonText: '确定',
                     cancelButtonText: '取消',
@@ -295,20 +377,16 @@ export default {
                     this.isDrawingMode = false
                     this.line = null
                     this.clearCanvas()
-                    // 清除已保存的画线显示层
                     const savedCanvas = this.$refs.savedLineCanvas
                     if (savedCanvas) {
                         const ctx = savedCanvas.getContext('2d')
                         ctx.clearRect(0, 0, savedCanvas.width, savedCanvas.height)
                     }
                     this.$message.info('已取消画线')
-                }).catch(() => {
-                    // 用户取消操作
-                })
+                }).catch(() => { })
             }
         },
 
-        /** 清除画布 */
         clearCanvas() {
             const canvas = this.$refs.drawCanvas
             if (canvas) {
@@ -317,20 +395,16 @@ export default {
             }
         },
 
-        /** 开始画线 */
         startDrawing(e) {
             if (!this.isDrawingMode) return
-            // 如果已经存在已保存的线，清除它（使用最新的线）
             if (this.savedLine) {
                 this.savedLine = null
-                // 清除已保存的画线显示层
                 const savedCanvas = this.$refs.savedLineCanvas
                 if (savedCanvas) {
                     const ctx = savedCanvas.getContext('2d')
                     ctx.clearRect(0, 0, savedCanvas.width, savedCanvas.height)
                 }
             }
-            // 如果正在画新线，清除当前线（只允许一条线）
             if (this.line) {
                 this.line = null
             }
@@ -347,7 +421,6 @@ export default {
             }
         },
 
-        /** 画线 */
         draw(e) {
             if (!this.isDrawing) return
             const canvas = this.$refs.drawCanvas
@@ -356,18 +429,15 @@ export default {
             const currentX = e.clientX - rect.left
             const currentY = e.clientY - rect.top
 
-            // 更新当前线的终点
             if (this.currentLine) {
                 this.currentLine.endX = currentX
                 this.currentLine.endY = currentY
             }
 
-            // 重绘画布：只绘制当前正在画的线（已保存的线在另一个画布上显示，不会被清除）
             ctx.clearRect(0, 0, canvas.width, canvas.height)
             ctx.strokeStyle = '#ff0000'
             ctx.lineWidth = 3
 
-            // 绘制当前正在画的线
             if (this.currentLine) {
                 ctx.beginPath()
                 ctx.moveTo(this.currentLine.startX, this.currentLine.startY)
@@ -376,32 +446,24 @@ export default {
             }
         },
 
-        /** 停止画线 */
         stopDrawing() {
             if (this.isDrawing && this.currentLine) {
-                // 只有当起点和终点不同时才保存
                 if (this.currentLine.startX !== this.currentLine.endX ||
                     this.currentLine.startY !== this.currentLine.endY) {
-                    // 如果已经存在已保存的线，清除它（使用最新的线）
                     if (this.savedLine) {
                         this.savedLine = null
-                        // 清除已保存的画线显示层
                         const savedCanvas = this.$refs.savedLineCanvas
                         if (savedCanvas) {
                             const ctx = savedCanvas.getContext('2d')
                             ctx.clearRect(0, 0, savedCanvas.width, savedCanvas.height)
                         }
                     }
-
-                    // 保存当前画的线（只保存一条线）
                     this.line = {
                         startX: this.currentLine.startX,
                         startY: this.currentLine.startY,
                         endX: this.currentLine.endX,
                         endY: this.currentLine.endY
                     }
-
-                    // 重绘画布，显示当前画的线
                     this.redrawCanvas()
                 }
                 this.currentLine = null
@@ -409,21 +471,13 @@ export default {
             this.isDrawing = false
         },
 
-        /** 重绘画布 */
         redrawCanvas() {
-            // 绘制到已保存的画线显示层
             const savedCanvas = this.$refs.savedLineCanvas
             if (savedCanvas) {
-                const container = this.$refs.videoContainer
-                if (container) {
-                    savedCanvas.width = container.offsetWidth
-                    savedCanvas.height = container.offsetHeight
-                }
-
                 const ctx = savedCanvas.getContext('2d')
+                // 确保清空整个画布
                 ctx.clearRect(0, 0, savedCanvas.width, savedCanvas.height)
 
-                // 绘制已保存的线（优先显示已保存的线，如果没有则显示当前线，最后显示初始线）
                 const lineToDraw = this.savedLine || this.line || this.initialLine
                 if (lineToDraw) {
                     ctx.strokeStyle = '#ff0000'
@@ -436,49 +490,30 @@ export default {
             }
         },
 
-        /** 视频加载完成 */
         handleVideoLoaded() {
             console.log('视频加载完成')
-            // 可以在这里获取视频尺寸并调整画布大小
             this.$nextTick(() => {
                 this.initCanvas()
-                // 如果有已保存的线或初始线，重新绘制
-                if (this.savedLine || this.line || this.initialLine) {
-                    this.redrawCanvas()
-                }
             })
         },
 
-        /** 视频加载错误 */
         handleVideoError(e) {
-            // 如果视频URL为空，不显示错误（因为还没有加载视频）
-            if (!this.videoUrl) {
-                return
-            }
-            // 避免重复显示错误提示
-            if (this.videoErrorShown) {
-                return
-            }
+            if (!this.videoUrl) return
+            if (this.videoErrorShown) return
             console.error('视频加载失败:', e)
             this.videoErrorShown = true
             this.$message.error('视频加载失败，请检查视频源地址')
         },
 
-        /** 加载视频流 */
         async loadVideoStream() {
             try {
                 const res = await getVideoStreamAPI()
                 if (res.code === 200 && res.data && res.data.streamUrl) {
-                    // 重置错误状态
                     this.videoErrorShown = false
                     this.videoUrl = res.data.streamUrl
-                } else {
-                    // 如果没有视频流地址，不显示错误（可能是正常的）
-                    console.log('未获取到视频流地址')
                 }
             } catch (error) {
                 console.error('获取视频流失败:', error)
-                // 接口调用失败时不显示错误，因为可能是正常的（没有配置视频流）
             }
         }
     }
@@ -486,6 +521,7 @@ export default {
 </script>
 
 <style scoped lang="scss">
+/* 保持原有样式不变，仅为 video-container 增加全屏时的样式处理 */
 .video-monitor-container {
     width: 100%;
     height: calc(100vh - 84px);
@@ -581,57 +617,6 @@ export default {
             align-items: center;
             gap: 12px;
         }
-
-        .draw-line-btn {
-            background: #1f72ea;
-            border: none;
-            box-shadow: 0px 4px 8px 0px rgba(51, 135, 255, 0.5);
-            border-radius: 4px;
-            padding: 10px 24px;
-            font-size: 14px;
-            font-weight: 500;
-            transition: all 0.3s;
-
-            &:hover {
-                background: #4a8bff;
-                box-shadow: 0px 6px 12px 0px rgba(51, 135, 255, 0.6);
-                transform: translateY(-1px);
-            }
-        }
-
-        .save-line-btn {
-            background: #67c23a;
-            border: none;
-            box-shadow: 0px 4px 8px 0px rgba(103, 194, 58, 0.5);
-            border-radius: 4px;
-            padding: 10px 24px;
-            font-size: 14px;
-            font-weight: 500;
-            transition: all 0.3s;
-
-            &:hover {
-                background: #85ce61;
-                box-shadow: 0px 6px 12px 0px rgba(103, 194, 58, 0.6);
-                transform: translateY(-1px);
-            }
-        }
-
-        .cancel-line-btn {
-            background: #909399;
-            border: none;
-            box-shadow: 0px 4px 8px 0px rgba(144, 147, 153, 0.5);
-            border-radius: 4px;
-            padding: 10px 24px;
-            font-size: 14px;
-            font-weight: 500;
-            transition: all 0.3s;
-
-            &:hover {
-                background: #a6a9ad;
-                box-shadow: 0px 6px 12px 0px rgba(144, 147, 153, 0.6);
-                transform: translateY(-1px);
-            }
-        }
     }
 }
 
@@ -666,11 +651,25 @@ export default {
     display: flex;
     align-items: center;
     justify-content: center;
+    /* 关键：确保全屏时背景为黑色 */
+    background-color: #000;
+
+    /* 兼容浏览器的全屏伪类 */
+    &:fullscreen {
+        width: 100vw;
+        height: 100vh;
+    }
+
+    &:-webkit-full-screen {
+        width: 100vw;
+        height: 100vh;
+    }
 }
 
 .video-player {
     width: 100%;
     height: 100%;
+    /* 保持宽高比，或者使用 fill 铺满 */
     object-fit: fill;
     background: #000;
 }
@@ -723,74 +722,6 @@ export default {
     z-index: 1.5;
 }
 
-.detection-overlay {
-    position: absolute;
-    top: 0;
-    left: 0;
-    width: 100%;
-    height: 100%;
-    pointer-events: none;
-    z-index: 1;
-}
-
-.vehicle-box {
-    position: absolute;
-    border: 2px solid #00ff00;
-    box-sizing: border-box;
-    pointer-events: none;
-    animation: pulse 2s infinite;
-
-    .box-corner {
-        position: absolute;
-        width: 12px;
-        height: 12px;
-        background: #00ff00;
-        border: 2px solid #000;
-        box-sizing: border-box;
-
-        &.corner-tl {
-            top: -6px;
-            left: -6px;
-            border-right: none;
-            border-bottom: none;
-        }
-
-        &.corner-tr {
-            top: -6px;
-            right: -6px;
-            border-left: none;
-            border-bottom: none;
-        }
-
-        &.corner-bl {
-            bottom: -6px;
-            left: -6px;
-            border-right: none;
-            border-top: none;
-        }
-
-        &.corner-br {
-            bottom: -6px;
-            right: -6px;
-            border-left: none;
-            border-top: none;
-        }
-    }
-}
-
-@keyframes pulse {
-
-    0%,
-    100% {
-        opacity: 1;
-    }
-
-    50% {
-        opacity: 0.7;
-    }
-}
-
-// 响应式调整
 @media (max-width: 768px) {
     .video-monitor-container {
         padding: 8px;
@@ -815,4 +746,19 @@ export default {
         }
     }
 }
-</style>
+
+/* 隐藏 Chrome, Edge, Safari 的全屏按钮 */
+video::-webkit-media-controls-fullscreen-button {
+    display: none !important;
+}
+
+/* 隐藏部分旧版浏览器的全屏功能（如果存在） */
+video::-webkit-media-controls-enclosure {
+    overflow: hidden !important;
+}
+
+/* 针对特定移动端（如某些安卓浏览器） */
+video::-internal-media-controls-download-button {
+    display: none;
+}
+</style>
\ No newline at end of file