diff --git a/web/navi.css b/web/navi.css
index e318460..b6a010a 100644
--- a/web/navi.css
+++ b/web/navi.css
@@ -2429,3 +2429,34 @@ html[data-theme] body:not(:has(.minimal-home)) footer > .navi-footer > a:nth-of-
 html[data-theme] body .navi-footer > .navi-quote:nth-last-of-type(2) { grid-column: 2 !important; grid-row: 1 !important; justify-self: end !important; }
 html[data-theme] body .navi-footer > .navi-quote:last-of-type { grid-column: 2 !important; grid-row: 2 !important; justify-self: end !important; }
 html[data-theme] .navi-footer { grid-template-rows: auto auto !important; grid-auto-rows: 0 !important; }
+
+/* ═══ v81：页脚回归文档流（用户：应在页面底部，不是悬浮于底部）═══
+   实测 v80：三视图的 .navi-footer-host / .navi-footer 均为 position:fixed + z-index:3，
+   属于"永远贴在视口上、盖在内容之上"的悬浮层；/workspace 还因此底部出血 8px。
+   改为文档流底部内容：
+   - position: static（回到正常流）→ 内容自然排列，滚动到页面最底才可见；
+   - 不再需要为它预留固定高度（去掉 margin-bottom 预留）；
+   - pointer-events 恢复 auto（不再是浮层，无需穿透）。 */
+html[data-theme] body:has(.minimal-home) .navi-footer-host,
+html[data-theme] body:not(:has(.minimal-home)) .navi-footer-host,
+html[data-theme] .navi-footer-host {
+  position: static !important;
+  left: auto !important; right: auto !important; bottom: auto !important;
+  z-index: auto !important;
+  margin: 0 !important; padding: 0 !important;
+  pointer-events: auto !important;
+  width: 100% !important;
+  height: auto !important; max-height: none !important;
+  background: transparent !important; border: 0 !important; box-shadow: none !important;
+  backdrop-filter: none !important; -webkit-backdrop-filter: none !important;
+  overflow: visible !important;
+}
+html[data-theme] body:not(:has(.minimal-home)) footer > .navi-footer,
+html[data-theme] .navi-footer {
+  position: static !important;
+  left: auto !important; right: auto !important; bottom: auto !important;
+  z-index: auto !important;
+}
+/* 页脚不再是浮层 → 取消为其预留的底部空间 */
+html[data-theme] .minimal-home > .item-group-container { margin-bottom: 0 !important; }
+html[data-theme] body:has(.minimal-home) .minimal-section-inner { padding-bottom: 8px !important; }