diff --git a/web/navi.css b/web/navi.css
index 0cf7699..69728dd 100644
--- a/web/navi.css
+++ b/web/navi.css
@@ -1636,3 +1636,21 @@ html.navi-dark body .navi-ws-modal-title,
 html.navi-dark body nav.side-bar .side-bar-item {
   color: #dce6f5 !important;
 }
+
+/* 备案号药丸：深色实测发现它仍是 rgba(255,255,255,.55) 的亮色块。
+   这里用更高特异度 + 末尾顺序确保覆盖，并把内部元素强制透明，
+   避免出现"深色底上贴一块白"的观感。 */
+html.navi-dark body.navi-dark .navi-footer,
+html.navi-dark body.navi-dark .navi-footer-host .navi-footer {
+  background-color: rgba(20, 31, 49, .92) !important;
+  border-color: rgba(148, 163, 184, .26) !important;
+  color: #9fb0c8 !important;
+  box-shadow: 0 8px 24px rgba(0, 0, 0, .30), inset 0 1px 0 rgba(255, 255, 255, .05) !important;
+}
+html.navi-dark body.navi-dark .navi-footer *,
+html.navi-dark body.navi-dark .navi-footer a,
+html.navi-dark body.navi-dark .navi-footer .navi-footer-sep {
+  background-color: transparent !important;
+  color: #9fb0c8 !important;
+}
+html.navi-dark body.navi-dark .navi-footer a:hover { color: #7dd3fc !important; }