diff --git a/shared/src/commonMain/kotlin/plus/rua/project/ui/CalendarMonthView.kt b/shared/src/commonMain/kotlin/plus/rua/project/ui/CalendarMonthView.kt
index 1aa4421..7596292 100644
--- a/shared/src/commonMain/kotlin/plus/rua/project/ui/CalendarMonthView.kt
+++ b/shared/src/commonMain/kotlin/plus/rua/project/ui/CalendarMonthView.kt
@@ -61,6 +61,7 @@ import kotlinx.datetime.todayIn
 import plus.rua.project.CalendarViewModel
 import kotlin.math.abs
 import kotlin.time.Clock
+import android.util.Log
 
 /**
  * 日历主界面，包含月/周视图切换、折叠动画和年视图缩放转场。
@@ -168,38 +169,35 @@ fun CalendarMonthView(
         val cellWidth = (screenWidthPx - horizontalPaddingPx) / 7
         (cellWidth + rowPadding2Px).toInt()
     } else 0
+    Log.d("CalLayout", "estimatedRow=$estimatedRowHeightPx screenW=$screenWidthPx screenH=$screenHeightPx")
 
     val effectiveRowHeightPx = if (rowHeightPx > 0) rowHeightPx else estimatedRowHeightPx
     val effectiveWeeks = interpolatedWeeks
 
-    val gridHeightPx by remember {
-        derivedStateOf {
-            if (effectiveRowHeightPx > 0) {
-                val rowH = effectiveRowHeightPx.toFloat()
-                if (collapseProgress > OFFSET_FRACTION_THRESHOLD) {
-                    (rowH * (1 + (effectiveWeeks - 1) * (1f - collapseProgress))).toInt()
-                } else {
-                    (rowH * effectiveWeeks).toInt()
-                }
-            } else 0
+    val gridHeightPx = if (effectiveRowHeightPx > 0) {
+        val rowH = effectiveRowHeightPx.toFloat()
+        if (collapseProgress > OFFSET_FRACTION_THRESHOLD) {
+            (rowH * (1 + (effectiveWeeks - 1) * (1f - collapseProgress))).toInt()
+        } else {
+            (rowH * effectiveWeeks).toInt()
         }
-    }
+    } else 0
+    Log.d("CalLayout", "gridHeightPx=$gridHeightPx rowH=$effectiveRowHeightPx weeks=$effectiveWeeks collapse=$collapseProgress")
 
-    val calendarAreaHeightPx by remember {
-        derivedStateOf { headerHeightPx + gridHeightPx + rowPaddingPx + cardGapPx }
-    }
+    val calendarAreaHeightPx = headerHeightPx + gridHeightPx + rowPaddingPx + cardGapPx
+    Log.d("CalLayout", "calendarArea=$calendarAreaHeightPx header=$headerHeightPx grid=$gridHeightPx rowPad=$rowPaddingPx cardGap=$cardGapPx")
 
-    val cardHeightPx by remember {
-        derivedStateOf {
-            if (screenHeightPx > 0 && calendarAreaHeightPx > 0) screenHeightPx - calendarAreaHeightPx else 0
-        }
-    }
+    val cardHeightPx =
+        if (screenHeightPx > 0 && calendarAreaHeightPx > 0) screenHeightPx - calendarAreaHeightPx else 0
+    Log.d("CalLayout", "cardHeight=$cardHeightPx screenH=$screenHeightPx calArea=$calendarAreaHeightPx")
 
     val pagerModifier = if (rowHeightPx > 0 && gridHeightPx > 0) {
+        Log.d("CalLayout", "pagerModifier: height=${with(density) { gridHeightPx.toDp() }} rowH=$rowHeightPx gridH=$gridHeightPx")
         Modifier
             .height(with(density) { gridHeightPx.toDp() })
             .clipToBounds()
     } else {
+        Log.d("CalLayout", "pagerModifier: EMPTY rowH=$rowHeightPx gridH=$gridHeightPx")
         Modifier
     }
 
@@ -320,6 +318,7 @@ fun CalendarMonthView(
                 }
 
                 if (cardHeightPx > 0) {
+                    Log.d("CalLayout", "BottomCard: height=${with(density) { cardHeightPx.toDp() }} cardH=$cardHeightPx isCollapsed=${viewModel.isCollapsed}")
                     BottomCard(
                         viewModel = viewModel,
                         dragRangePx = dragRangePx,