Update style.css

style.css

@@ -575,4 +575,43 @@ footer a:hover {
     position: fixed;
     pointer-events: none;
     z-index: 5;
-}
+}
+/* —— 图集预览模态框 —— */
+#image-modal {
+    display: none;
+    position: fixed;
+    top: 0; left: 0;
+    width: 100%; height: 100%;
+    background: rgba(0,0,0,0.8);
+    z-index: 2000;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+#image-modal img {
+    max-width: 90%;
+    max-height: 90%;
+    border-radius: 8px;
+}
+.modal-close {
+    position: absolute;
+    top: 1rem; right: 1rem;
+    background: none; border: none;
+    font-size: 2rem;
+    color: var(--primary-color);
+    cursor: pointer;
+}
+.modal-nav {
+    position: absolute;
+    top: 50%;
+    transform: translateY(-50%);
+    background: rgba(0,0,0,0.3);
+    border: none;
+    font-size: 3rem;
+    color: white;
+    width: 2rem; height: 3rem;
+    cursor: pointer;
+    border-radius: 0.3rem;
+}
+#image-prev { left: 1rem; }
+#image-next { right: 1rem; }