diff --git a/app/static/app.css b/app/static/app.css
index aa1b0c2..b9ecc85 100644
--- a/app/static/app.css
+++ b/app/static/app.css
@@ -146,6 +146,18 @@ a {
   padding: 30px;
 }
 
+.hero-band-inverse {
+  background: #111827;
+  border-color: #111827;
+  border-radius: 0;
+  box-shadow: none;
+  color: #ffffff;
+  margin-left: calc(50% - 50vw);
+  margin-right: calc(50% - 50vw);
+  margin-top: -1.5rem;
+  padding: 42px max(48px, calc((100vw - 1180px) / 2 + 24px));
+}
+
 .hero-shell {
   align-items: flex-end;
   display: flex;
@@ -166,6 +178,12 @@ a {
   margin: 0 0 12px;
 }
 
+.hero-band-inverse .hero-copy h1 {
+  color: #ffffff;
+  font-size: 42px;
+  max-width: 720px;
+}
+
 .hero-copy p:not(.eyebrow) {
   color: var(--muted-foreground);
   font-size: 15px;
@@ -173,6 +191,16 @@ a {
   margin: 0;
 }
 
+.hero-band-inverse .eyebrow {
+  color: #9ca3af;
+  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
+}
+
+.hero-band-inverse .hero-copy p:not(.eyebrow) {
+  color: #d1d5db;
+  max-width: 680px;
+}
+
 .hero-metrics {
   display: grid;
   gap: 10px;
@@ -180,6 +208,13 @@ a {
   min-width: 320px;
 }
 
+.hero-data-grid {
+  border: 1px solid #374151;
+  gap: 0;
+  grid-template-columns: repeat(3, minmax(120px, 1fr));
+  min-width: 420px;
+}
+
 .hero-metric {
   background: var(--muted);
   border: 1px solid var(--border);
@@ -187,12 +222,31 @@ a {
   padding: 12px;
 }
 
+.hero-band-inverse .hero-metric {
+  background: transparent;
+  border: 0;
+  border-right: 1px solid #374151;
+  border-radius: 0;
+  padding: 18px 20px;
+}
+
+.hero-band-inverse .hero-metric:last-child {
+  border-right: 0;
+}
+
 .hero-metric strong {
   display: block;
   font-size: 18px;
   line-height: 1.2;
 }
 
+.hero-band-inverse .hero-metric strong {
+  color: #ffffff;
+  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
+  font-size: 30px;
+  font-weight: 700;
+}
+
 .hero-metric span {
   color: var(--muted-foreground);
   display: block;
@@ -200,6 +254,53 @@ a {
   margin-top: 4px;
 }
 
+.hero-band-inverse .hero-metric span {
+  color: #9ca3af;
+}
+
+.task-workspace {
+  display: grid;
+  gap: 24px;
+  margin-top: 28px;
+}
+
+.hard-panel {
+  border-radius: 0;
+  box-shadow: none;
+}
+
+.panel-heading {
+  padding: 18px 24px;
+}
+
+.panel-note {
+  color: var(--muted-foreground);
+  font-size: 13px;
+}
+
+.scale-hint-panel {
+  border-top: 1px solid var(--border);
+  color: var(--muted-foreground);
+  font-size: 13px;
+  margin: 20px -20px -20px;
+  padding: 14px 20px;
+}
+
+.data-grid-table {
+  min-width: 1120px;
+}
+
+.data-grid-table thead th {
+  height: 48px;
+  padding-left: 16px;
+  padding-right: 16px;
+}
+
+.data-grid-table td {
+  padding-left: 16px;
+  padding-right: 16px;
+}
+
 .btn {
   border-radius: 6px;
   font-size: 14px;
@@ -496,6 +597,10 @@ a {
     min-width: 0;
     width: 100%;
   }
+
+  .hero-data-grid {
+    min-width: 0;
+  }
 }
 
 @media (max-width: 768px) {
@@ -508,14 +613,33 @@ a {
     padding: 22px;
   }
 
+  .hero-band-inverse {
+    margin-left: -14px;
+    margin-right: -14px;
+    padding: 28px 22px;
+  }
+
   .hero-copy h1 {
     font-size: 28px;
   }
 
+  .hero-band-inverse .hero-copy h1 {
+    font-size: 30px;
+  }
+
   .hero-metrics {
     grid-template-columns: 1fr;
   }
 
+  .hero-band-inverse .hero-metric {
+    border-bottom: 1px solid #374151;
+    border-right: 0;
+  }
+
+  .hero-band-inverse .hero-metric:last-child {
+    border-bottom: 0;
+  }
+
   .section-heading,
   .page-heading,
   .content-item-row {
diff --git a/app/templates/index.html b/app/templates/index.html
index b628b77..dd6e02c 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -2,14 +2,14 @@
 {% set has_running_tasks = tasks | selectattr("status", "equalto", "running") | list | length > 0 %}
 {% block title %}热榜评论雷达 - 热榜评论分析工具{% endblock %}
 {% block content %}
-<section class="hero-band mb-4">
+<section class="hero-band hero-band-inverse">
   <div class="hero-shell">
     <div class="hero-copy">
       <p class="eyebrow">Hot Comment Radar</p>
-      <h1>热榜评论雷达</h1>
-      <p>从小红书和抖音热点出发，抓取真实评论，生成 AI 情绪、标签和可导出的分析报告。</p>
+      <h1>抓取热点评论，快速看清讨论情绪</h1>
+      <p>面向内部演示和联调的轻量工具：选择平台、控制抓取规模、查看任务状态，并进入报告和评论明细。</p>
     </div>
-    <div class="hero-metrics" aria-label="默认任务规模">
+    <div class="hero-metrics hero-data-grid" aria-label="默认任务规模">
       <div class="hero-metric">
         <strong>5</strong>
         <span>默认热点</span>
@@ -26,8 +26,9 @@
   </div>
 </section>
 
-<section class="tool-card mb-4" id="create-task">
-  <div class="section-heading">
+<div class="task-workspace">
+<section class="tool-card hard-panel" id="create-task">
+  <div class="section-heading panel-heading">
     <div>
       <p class="section-kicker">采集配置</p>
       <h2>创建抓取任务</h2>
@@ -61,23 +62,23 @@
           <button class="btn btn-primary w-100" id="submit-btn" type="submit">开始抓取</button>
         </div>
       </div>
-      <div class="form-text text-muted mt-2" id="scale-hint">
+      <div class="scale-hint-panel" id="scale-hint">
         预计最多抓取：<strong id="scale-calc">1250</strong> 条评论（实际数量可能受平台返回数量、去重、失败、限流影响）
       </div>
     </form>
   </div>
 </section>
 
-<section class="tool-card" id="task-history">
-  <div class="section-heading">
+<section class="tool-card hard-panel" id="task-history">
+  <div class="section-heading panel-heading">
     <div>
       <p class="section-kicker">任务历史</p>
       <h2>最近任务</h2>
     </div>
-    {% if has_running_tasks %}<span class="badge text-bg-warning">自动更新中</span>{% endif %}
+    <span class="panel-note">{% if has_running_tasks %}自动更新中{% else %}运行中任务自动刷新{% endif %}</span>
   </div>
   <div class="table-responsive">
-    <table class="table app-table align-middle mb-0">
+    <table class="table app-table data-grid-table align-middle mb-0">
       <thead>
         <tr>
           <th>任务 ID</th>
@@ -95,6 +96,7 @@
     </table>
   </div>
 </section>
+</div>
 {% if has_running_tasks %}
 <script>document.addEventListener("DOMContentLoaded", () => pollTaskListStatus());</script>
 {% endif %}
diff --git a/tests/integration/test_routes.py b/tests/integration/test_routes.py
index 6bc3e7b..b5c1d7a 100644
--- a/tests/integration/test_routes.py
+++ b/tests/integration/test_routes.py
@@ -25,6 +25,25 @@ def test_index_page_renders_task_form_empty_state_and_default_scale():
     assert "还没有任何任务" in response.text
 
 
+def test_index_page_uses_pencil_data_grid_layout_for_ui_polish():
+    with make_test_client() as (client, _engine):
+        response = client.get("/")
+
+    assert response.status_code == 200
+    soup = BeautifulSoup(response.text, "html.parser")
+    visible_text = soup.get_text(" ")
+    hero = soup.select_one(".hero-band.hero-band-inverse")
+    assert hero is not None
+    assert "抓取热点评论，快速看清讨论情绪" in visible_text
+    assert soup.select_one(".hero-metrics.hero-data-grid") is not None
+    assert soup.select_one(".task-workspace") is not None
+    assert soup.select_one(".tool-card.hard-panel") is not None
+    assert soup.select_one(".section-heading.panel-heading") is not None
+    assert soup.select_one("table.app-table.data-grid-table") is not None
+    assert soup.select_one(".scale-hint-panel") is not None
+    assert "运行中任务自动刷新" in visible_text
+
+
 def test_index_page_lists_existing_tasks():
     with make_test_client() as (client, engine):
         from sqlalchemy.orm import Session