diff --git a/templates/base.html b/templates/base.html
index b86e681..13a1a86 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -92,6 +92,11 @@
       color: var(--muted);
       font-size: 0.92rem;
     }
+    .topnav a.active {
+      background: var(--primary-soft);
+      color: var(--primary);
+      border: 1px solid #d8e5ff;
+    }
     .topnav a:hover {
       background: var(--surface-soft);
       color: var(--text);
@@ -363,10 +368,10 @@
         </div>
       </div>
       <nav class="topnav">
-        <a href="{% url 'chat:index' %}">审核智能体</a>
-        <a href="{% url 'documents:list' %}">资料包</a>
-        <a href="{% url 'platform_ui:knowledge-base' %}">知识库</a>
-        <a href="{% url 'audit:list' %}">处理历史</a>
+        <a href="{% url 'chat:index' %}"{% if request.resolver_match.namespace == 'chat' %} class="active"{% endif %}>审核智能体</a>
+        <a href="{% url 'documents:list' %}"{% if request.resolver_match.namespace == 'documents' %} class="active"{% endif %}>资料包</a>
+        <a href="{% url 'platform_ui:knowledge-base' %}"{% if request.resolver_match.namespace == 'platform_ui' %} class="active"{% endif %}>知识库</a>
+        <a href="{% url 'audit:list' %}"{% if request.resolver_match.namespace == 'audit' %} class="active"{% endif %}>处理历史</a>
       </nav>
     </div>
   </header>
diff --git a/templates/scenarios/index.html b/templates/scenarios/index.html
index c9626bd..fed1b55 100644
--- a/templates/scenarios/index.html
+++ b/templates/scenarios/index.html
@@ -35,7 +35,7 @@
 
   <section class="grid-2">
     <a class="link-card" href="{% url 'platform_ui:knowledge-base' %}">
-      <h3>知识库配置</h3>
+      <h3>知识库</h3>
       <p>查看规则树、知识源和切片策略。</p>
     </a>
     <a class="link-card" href="{% url 'documents:list' %}">
diff --git a/tests/test_scenarios.py b/tests/test_scenarios.py
index e06cbf8..6729490 100644
--- a/tests/test_scenarios.py
+++ b/tests/test_scenarios.py
@@ -161,3 +161,22 @@ def test_base_layout_exposes_four_topnav_links(client):
     assert reverse("documents:list") in content
     assert reverse("platform_ui:knowledge-base") in content
     assert reverse("audit:list") in content
+
+
+def test_home_page_uses_unified_four_entry_labels(client):
+    response = client.get("/")
+
+    content = response.content.decode("utf-8")
+    assert response.status_code == 200
+    assert "<h3>知识库</h3>" in content
+    assert "<h3>资料包</h3>" in content
+    assert "<h3>审核智能体</h3>" in content
+    assert "<h3>处理历史</h3>" in content
+
+
+def test_base_layout_marks_current_topnav_entry_active(client, db):
+    response = client.get(reverse("documents:list"))
+
+    content = response.content.decode("utf-8")
+    assert response.status_code == 200
+    assert 'href="/documents/" class="active"' in content