短文配图：快发盒上传 + Twitter 式网格 + 全站 lightbox 预览；整卡点击进详情、时间线短文豁免首字

frontend/src/styles.css

@@ -304,6 +304,32 @@ html.topbar-hidden {--topbar-h: 0px;}
   line-height: inherit;
   margin: 0;
   color: inherit;}
+/* 时间线里的短文同样不放大首字：一句话的纸条压个大字像截断
+   （详情页 .prose-short 同此；长文详情的首字下沉保留） */
+.prose.short-body > p:first-of-type::first-letter {float: none;
+  font-size: inherit;
+  line-height: inherit;
+  font-family: inherit;
+  margin: 0;
+  color: inherit;}
+/* 短文配图：Twitter 式网格（快发盒上传，≤4 张；详情页用） */
+.post-imgs {display: grid;
+  gap: 3px;
+  margin-top: 18px;
+  border-radius: 6px;
+  overflow: hidden;}
+.post-imgs img {display: block;
+  width: 100%;
+  height: 100%;
+  object-fit: cover;}
+.post-imgs.n2, .post-imgs.n4 {grid-template-columns: 1fr 1fr;}
+.post-imgs.n3 {grid-template-columns: 1fr 1fr;}
+.post-imgs.n2 img, .post-imgs.n4 img {aspect-ratio: 1;}
+.post-imgs.n3 img {aspect-ratio: 1;}
+.post-imgs.n3 img:first-child {grid-row: span 2;
+  aspect-ratio: auto;
+  height: 100%;}
+.post-imgs.n1 img {max-height: 560px;}
 .empty {padding: 48px 0;
   text-align: center;
   color: var(--muted);