style: 优化管理后台侧边栏图标的悬停动画效果

src/routes/admin/+layout.svelte

@@ -440,19 +440,9 @@
 		transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
 	}
 
-	/* 仪表盘: 弹性脉冲 */
-	@keyframes pulse-icon {
-		0%,
-		100% {
-			transform: scale(1);
-		}
-		50% {
-			transform: scale(1.15);
-		}
-	}
+	/* 仪表盘: 平滑放大 */
 	.nav-item.nav-dashboard:hover :global(svg) {
-		animation: pulse-icon 0.4s ease-in-out;
-		transform: scale(1.1); /* 停留在略大状态 */
+		transform: scale(1.15);
 	}
 
 	/* 全部文章: 书页点头 */
@@ -477,23 +467,10 @@
 		transform: rotate(8deg);
 	}
 
-	/* 标签库: 挂件摇摆 */
-	@keyframes swing-icon {
-		0%,
-		100% {
-			transform: rotate(0);
-		}
-		25% {
-			transform: rotate(15deg);
-		}
-		75% {
-			transform: rotate(-10deg);
-		}
-	}
+	/* 标签库: 平滑倾斜 */
 	.nav-item.nav-tags:hover :global(svg) {
 		transform-origin: top left;
-		animation: swing-icon 0.6s ease-in-out;
-		transform: rotate(5deg);
+		transform: rotate(15deg);
 	}
 
 	/* 媒体与文件: 相框聚焦 */