feat: 电子药箱小程序 - 4Tab药品管理

- 电子药箱: 药品库存管理 + 手动录入 + 今日用药打卡
- 药品百科: 搜索 + 分类筛选 + 20种药品静态数据
- 惠教中心: 4条药品使用指南课程
- 我的: 家庭成员信息管理
- 自定义TabBar + navigation-bar组件
- SVG药品分类插图

miniprogram/components/my-video/my-video.scss

@@ -0,0 +1,83 @@
+/* components/my-video.wxss */
+.live-content {
+    max-width: 100%;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    position: relative;
+    z-index: 1000;
+}
+
+.video {
+    width: 100%;
+    min-height: 400rpx; /* 200px -> 400rpx */
+    background-color: #eeeeee;
+}
+
+.screen {
+    .video {
+        height: 100%;
+        position: absolute;
+        z-index: -1;
+    }
+}
+
+.tools {
+    position: absolute;
+    display: flex;
+    width: 100%;
+    height: 100%;
+    bottom: 0;
+    justify-content: space-between;
+    align-items: flex-end;
+    color: white;
+    transition: opacity 0.3s ease;
+}
+
+
+.video-poster {
+    width: 100%;
+    height: 100%;
+    position: absolute;
+    top: 0;
+    left: 0;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    background-color: rgba(0, 0, 0, 0.3);
+    z-index: 2;
+    .play-button {
+        width: 100rpx;
+        height: 100rpx;
+        border-radius: 50%;
+        display: flex;
+        justify-content: center;
+        align-items: center;
+        cursor: pointer;
+        background-color: rgba(0, 0, 0, 0.7);
+        .play-icon {
+            font-size: 50rpx;
+            color:white;
+            margin-left: 6rpx;
+            margin-bottom: 3rpx;
+        }
+    }
+}
+.poster-image {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  z-index: 1;
+}
+.cover {
+  position: absolute;
+  bottom: 0;
+  z-index: 998;
+  height: 20%;
+  width: 70%;
+  left: 10%;
+  background-color: rgba(255, 255, 255, 0.007);
+}