feat(home): 首页接入最新测量数据与空态

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

miniprogram/pages/home/home.less

@@ -211,6 +211,14 @@
 								font-weight: bolder;
 								line-height: 48rpx;
 								margin-right: 10rpx;
+
+								&.diff-up {
+									color: #FF4D4F;
+								}
+
+								&.diff-neutral {
+									color: #252535;
+								}
 							}
 
 							> view:nth-of-type(2) {
@@ -315,6 +323,32 @@
 			}
 		}
 
+		.empty-state {
+			width: 100%;
+			display: flex;
+			flex-direction: column;
+			align-items: center;
+			padding-top: 160rpx;
+
+			.empty-icon {
+				width: 193rpx;
+				height: 138rpx;
+				margin-bottom: 40rpx;
+
+				image {
+					width: 100%;
+					height: 100%;
+				}
+			}
+
+			.empty-text {
+				color: #808080;
+				height: 30rpx;
+				font-size: 30rpx;
+				line-height: 30rpx;
+			}
+		}
+
 		.detailedData {
 			width: 100%;
 			border-radius: 24rpx;