fix: 功能优化完善，样式相关。

src/pages/work/bill/creditInstallmentHistory/details.vue

@@ -273,19 +273,19 @@ function handleUpdateInterest() {
   .item-header {
     display: flex;
     flex-direction: column;
-    gap: 16rpx;
-    padding: 24rpx;
+    gap: 12rpx;
+    padding: 16rpx 24rpx;
     background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
 
     .header-row {
       display: flex;
       align-items: center;
-      gap: 12rpx;
+      gap: 10rpx;
     }
 
     .card-icon {
-      width: 44rpx;
-      height: 44rpx;
+      width: 40rpx;
+      height: 40rpx;
       border-radius: 50%;
       background: rgba(255, 255, 255, 0.25);
       display: flex;
@@ -295,7 +295,7 @@ function handleUpdateInterest() {
     }
 
     .account-name {
-      font-size: 26rpx;
+      font-size: 24rpx;
       font-weight: 500;
       color: #ffffff;
       line-height: 1.3;
@@ -311,12 +311,12 @@ function handleUpdateInterest() {
       justify-content: space-between;
       align-items: center;
       gap: 12rpx;
-      padding-top: 12rpx;
+      padding-top: 10rpx;
       border-top: 1rpx solid rgba(255, 255, 255, 0.2);
     }
 
     .time-text {
-      font-size: 28rpx;
+      font-size: 26rpx;
       color: rgba(255, 255, 255, 0.9);
       font-weight: 500;
       line-height: 1.3;
@@ -324,7 +324,7 @@ function handleUpdateInterest() {
     }
 
     .type-text {
-      font-size: 26rpx;
+      font-size: 24rpx;
       font-weight: 600;
       color: #ffffff;
       line-height: 1.3;
@@ -334,7 +334,7 @@ function handleUpdateInterest() {
     }
 
     .amount-value {
-      font-size: 36rpx;
+      font-size: 32rpx;
       font-weight: 700;
       color: #52c41a;
       line-height: 1.2;