style: 优化文章封面显示效果与标题字体大小

src/app.css

@@ -364,7 +364,7 @@ body.single-col .post-list {
 }
 @media screen and (min-width: 767px) {
 	.card .title {
-		font-size: 1.85rem;
+		font-size: 1.45rem;
 	}
 	.card-link:hover .title {
 		color: var(--accent-color) !important;
@@ -1394,12 +1394,16 @@ footer section p:first-child {
 	height: 200px;
 	overflow: hidden;
 	border-bottom: none;
+	background-color: var(--border-color); /* 添加一点背景色填补空白区域 */
+	display: flex;
+	align-items: center;
+	justify-content: center;
 }
 
 .post-cover img {
 	width: 100%;
 	height: 100%;
-	object-fit: cover;
+	object-fit: contain; /* 保证图片显示完整不被裁剪 */
 	display: block;
 	border-radius: 0;
 }