diff --git a/app.wxss b/app.wxss
index 9946b19..4f145fd 100644
--- a/app.wxss
+++ b/app.wxss
@@ -129,11 +129,12 @@ image {
 }
 
 @keyframes pageIn {
-  from { opacity: 0; transform: translateY(20rpx); }
-  /* `none` (not translateY(0)) so the finished animation leaves NO transform
-     on .container - any non-none transform creates a containing block that
-     demotes descendant position:fixed to relative-to-container, breaking
-     full-screen modals (day-detail / plan-editor / completion) once the
-     page scrolls past one viewport height. */
-  to   { opacity: 1; transform: none; }
+  /* Opacity-only: any transform (even translateY(0) held by animation
+     fill-mode) makes .container a containing block that demotes descendant
+     position:fixed to relative-to-container, breaking full-screen modals on
+     real devices once the page scrolls past one viewport. The prior
+     `to: transform: none` did NOT hold on real devices, so drop transform
+     from the keyframes entirely. Pages still get a fade-in. */
+  from { opacity: 0; }
+  to   { opacity: 1; }
 }
diff --git a/components/calendar-heatmap/calendar-heatmap.js b/components/calendar-heatmap/calendar-heatmap.js
index 9d1540a..085c237 100644
--- a/components/calendar-heatmap/calendar-heatmap.js
+++ b/components/calendar-heatmap/calendar-heatmap.js
@@ -79,13 +79,16 @@ Component({
 
     onDayTap(e) {
       const day = e.currentTarget.dataset.day
-      if (!day) return
-      const cell = this.data.weeks.flat().find(c => c && c.day === day)
+      if (!day && day !== 0) return
+      // dataset values can arrive as strings on real devices, which breaks
+      // the strict === against c.day (number). Normalize so the lookup
+      // works on both simulator and device.
+      const cell = this.data.weeks.flat().find(c => c && c.day === Number(day))
       if (!cell || cell.duration <= 0) return
       this.triggerEvent('daytap', {
         year: this.properties.year,
         month: this.properties.month,
-        day,
+        day: cell.day,
         duration: cell.duration
       })
     }
diff --git a/pages/records/records.wxml b/pages/records/records.wxml
index 1f18a5e..cd0d61e 100644
--- a/pages/records/records.wxml
+++ b/pages/records/records.wxml
@@ -113,11 +113,12 @@
   </view>
   <!-- /hidden wrapper -->
 
-  <!-- 日期详情弹窗:普通 view 实现,不用 ui-modal。
-       自定义组件根元素的 position: fixed 会被小程序运行时吞掉,叠加
-       .page-enter 的 transform 会让 fixed 降级相对 .container,导致弹窗
-       落到容器末尾而非视口居中。普通 view 的 fixed 100% 生效。 -->
-  <view wx:if="{{showDayDetail}}" class="day-detail-mask" catchtouchmove="onNoop">
+</view>
+<!-- 日期详情弹窗:放在 .container 外。 .page-enter 的 transform 让 .container
+     成为 fixed 的包含块,mask 降级相对 .container(高>>视口),body 居中到
+     .container 中心(视口外),真机看不到。移到 .container 外,fixed 相对视口;
+     style 注入 themeStyle 拿暗黑变量。 -->
+  <view wx:if="{{showDayDetail}}" class="day-detail-mask" style="{{themeStyle}}" catchtouchmove="onNoop">
     <view class="day-detail-mask__bg" bindtap="onCloseDayDetail"></view>
     <view class="day-detail-body" catchtap="onNoop">
       <view class="detail-date-row">
@@ -146,4 +147,3 @@
       </view>
     </view>
   </view>
-</view>