更新界面

app/src/main/res/drawable/bg_book_mask.xml

@@ -2,5 +2,5 @@
 <!-- res/drawable/bg_semi_transparent_overlay.xml -->
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
     android:shape="rectangle">
-    <solid android:color="@color/transparent70" />
+    <solid android:color="@color/transparent50" />
 </shape>

app/src/main/res/drawable/bg_book_mask_land.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- res/drawable/bg_semi_transparent_overlay.xml -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="@color/transparent70" />
+</shape>

app/src/main/res/drawable/bg_gradient.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <!--实现应用背景颜色渐变-->
-    <gradient
-        android:startColor="#000000"
-        android:endColor="#00000000"
-        android:angle="90" />
-</shape>

app/src/main/res/drawable/bg_gradient_mask_land.xml

@@ -2,7 +2,7 @@
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
     android:shape="rectangle">
 
-    <solid android:color="?attr/colorSurfaceContainer" />
+    <solid android:color="?attr/colorSurface" />
 
     <corners
         android:topLeftRadius="16dp"

app/src/main/res/drawable/bg_surface_variant.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="?attr/colorSurfaceContainerHigh" />
+</shape>