diff --git a/frontend/scripts/regression-dashboard.mjs b/frontend/scripts/regression-dashboard.mjs
index 759be26..aad453e 100644
--- a/frontend/scripts/regression-dashboard.mjs
+++ b/frontend/scripts/regression-dashboard.mjs
@@ -48,8 +48,8 @@ assert.match(dashboardSource, /grid-template-columns:\s*minmax\(0,\s*1\.9fr\)\s*
 assert.match(dashboardSource, /\.training-chart\s*\{[\s\S]*?height:\s*300px;[\s\S]*?min-height:\s*300px;/, '训练统计图应保持舒展、稳定的展示高度')
 assert.match(dashboardSource, /\.service-table\s*\{[\s\S]*?grid-template-rows:[^;]*repeat\(4,\s*minmax\(48px,\s*1fr\)\)/, '服务状态行应随中间区域同步拉伸')
 assert.match(dashboardSource, /\.tasks-heading\s*\{[\s\S]*?min-height:\s*32px;[\s\S]*?padding:\s*0 14px 10px;/, '训练任务标题区应适当加高')
-assert.match(dashboardSource, /\.tasks-table\s*\{[\s\S]*?th,\s*td\s*\{[\s\S]*?height:\s*42px;[\s\S]*?th\s*\{[\s\S]*?height:\s*36px;/, '训练任务表格行应适当加高')
-assert.match(dashboardSource, /@media\s*\(max-height:\s*900px\)[\s\S]*?\.tasks-heading\s*\{[\s\S]*?min-height:\s*28px;[\s\S]*?padding:\s*0 12px 8px;[\s\S]*?\.tasks-table\s*\{[\s\S]*?height:\s*36px;[\s\S]*?th\s*\{[\s\S]*?height:\s*32px;/, '低高度桌面视口也应提高训练任务占比')
+assert.match(dashboardSource, /\.tasks-table\s*\{[\s\S]*?th,\s*td\s*\{[\s\S]*?height:\s*50px;[\s\S]*?th\s*\{[\s\S]*?height:\s*38px;/, '训练任务表格正文行应保持舒展')
+assert.match(dashboardSource, /@media\s*\(max-height:\s*900px\)[\s\S]*?\.tasks-heading\s*\{[\s\S]*?min-height:\s*28px;[\s\S]*?padding:\s*0 12px 8px;[\s\S]*?\.tasks-table\s*\{[\s\S]*?height:\s*42px;[\s\S]*?th\s*\{[\s\S]*?height:\s*34px;/, '低高度桌面视口也应保留可读的训练任务行高')
 assert.match(dashboardSource, /class=["']user-stats-row["'][\s\S]*?用户操作分布[\s\S]*?登录时长排行[\s\S]*?最近登录用户/, '服务看板应展示三块用户统计卡片')
 assert.match(dashboardSource, /class=["']duration-chart["'][\s\S]*?loginDurationChartOption/, '登录时长应使用 ECharts 图表展示')
 assert.match(dashboardSource, /const loginDurationChartOption[\s\S]*?type:\s*['"]bar['"][\s\S]*?formatter:\s*['"]\{c\} 小时['"]/, '登录时长应以横向柱状图展示具体小时数')
diff --git a/frontend/scripts/regression-page-surface.mjs b/frontend/scripts/regression-page-surface.mjs
index e297fd8..25fc074 100644
--- a/frontend/scripts/regression-page-surface.mjs
+++ b/frontend/scripts/regression-page-surface.mjs
@@ -181,7 +181,7 @@ assert.match(rootPageCardBlock, /box-shadow:\s*none\s*!important;/, '页面根
 const trainingLogStyle = [trainingLogSource, trainingOverviewSource]
   .flatMap((source) => parseSfc(source).descriptor.styles.map((item) => item.content))
   .join('\n')
-const businessSurfaceBlock = extractCssBlock(trainingLogStyle, '.profile-section,\n.runtime-panel')
+const businessSurfaceBlock = extractCssBlock(trainingLogStyle, '.task-overview')
 assert.match(
   businessSurfaceBlock,
   /background:\s*var\(--app-surface-bg\);/,
diff --git a/frontend/src/components/AppHeader.vue b/frontend/src/components/AppHeader.vue
index 2eb5f43..109db06 100644
--- a/frontend/src/components/AppHeader.vue
+++ b/frontend/src/components/AppHeader.vue
@@ -27,6 +27,11 @@ function updateTime() {
   currentDate.value = now.toLocaleDateString('zh-CN', { year: 'numeric', month: '2-digit', day: '2-digit' }).replace(/\//g, '-')
 }
 
+function openGuide() {
+  const guideUrl = router.resolve({ name: 'guide' }).href
+  window.open(guideUrl, '_blank', 'noopener,noreferrer')
+}
+
 const serverIp = ref(window.location.hostname)
 
 onMounted(() => {
@@ -103,6 +108,19 @@ onUnmounted(() => {
           <span>{{ currentTime }}</span>
         </div>
       </div>
+
+      <div class="divider document-divider"></div>
+
+      <el-tooltip content="使用文档" placement="bottom">
+        <button
+          type="button"
+          class="documentation-btn"
+          aria-label="打开使用文档"
+          @click="openGuide"
+        >
+          <i class="fa fa-book" aria-hidden="true" />
+        </button>
+      </el-tooltip>
     </div>
   </header>
 </template>
@@ -261,4 +279,50 @@ onUnmounted(() => {
     }
   }
 }
+
+.documentation-btn {
+  width: 40px;
+  height: 40px;
+  padding: 0;
+  border: 1px solid #e2e8f0;
+  border-radius: 10px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  flex: 0 0 auto;
+  background: #fff;
+  color: #64748b;
+  cursor: pointer;
+  font-size: 17px;
+  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
+
+  &:hover {
+    border-color: rgba(79, 70, 229, 0.28);
+    background: #eef2ff;
+    color: var(--primary-color);
+    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.1);
+  }
+
+  &:focus-visible {
+    outline: 3px solid rgba(79, 70, 229, 0.2);
+    outline-offset: 2px;
+  }
+}
+
+@media (max-width: 1280px) {
+  .header-right {
+    gap: 12px;
+  }
+
+  .system-info .info-item:first-child {
+    display: none;
+  }
+}
+
+@media (max-width: 1040px) {
+  .system-info,
+  .header-right > .divider:not(.document-divider) {
+    display: none;
+  }
+}
 </style>
diff --git a/frontend/src/router/index.ts b/frontend/src/router/index.ts
index 778e8eb..a51b5f3 100644
--- a/frontend/src/router/index.ts
+++ b/frontend/src/router/index.ts
@@ -9,6 +9,12 @@ const routes: RouteRecordRaw[] = [
     component: () => import('@/views/login/LoginView.vue'),
     meta: { title: '登录', public: true },
   },
+  {
+    path: '/guide',
+    name: 'guide',
+    component: () => import('@/views/guide/GuideView.vue'),
+    meta: { title: '使用文档', skipPermission: true },
+  },
   {
     path: '/',
     component: () => import('@/layouts/MainLayout.vue'),
diff --git a/frontend/src/views/dashboard/DashboardView.vue b/frontend/src/views/dashboard/DashboardView.vue
index 2fe514f..1cd346e 100644
--- a/frontend/src/views/dashboard/DashboardView.vue
+++ b/frontend/src/views/dashboard/DashboardView.vue
@@ -253,7 +253,7 @@ const loginDurationStats: LoginDurationStat[] = [
 
 const loginDurationChartOption = computed<EChartsOption>(() => ({
   animationDuration: 500,
-  grid: { top: 8, right: 40, bottom: 6, left: 8, containLabel: true },
+  grid: { top: 8, right: 60, bottom: 6, left: 8, containLabel: true },
   tooltip: {
     trigger: 'axis',
     axisPointer: { type: 'shadow' },
@@ -261,7 +261,7 @@ const loginDurationChartOption = computed<EChartsOption>(() => ({
   },
   xAxis: {
     type: 'value',
-    max: Math.ceil(Math.max(...loginDurationStats.map((user) => user.duration)) / 10) * 10,
+    max: Math.ceil(Math.max(...loginDurationStats.map((user) => user.duration)) * 1.15 / 10) * 10,
     splitNumber: 4,
     axisLabel: { color: '#94a3b8', fontSize: 11, formatter: '{value}h' },
     axisLine: { show: false },
@@ -284,7 +284,7 @@ const loginDurationChartOption = computed<EChartsOption>(() => ({
       barMaxWidth: 18,
       barCategoryGap: '34%',
       itemStyle: { color: '#4f46e5', borderRadius: [0, 4, 4, 0] },
-      label: { show: true, position: 'right', distance: 8, color: '#64748b', fontSize: 11, formatter: '{c} 小时' },
+      label: { show: true, position: 'right', distance: 6, color: '#64748b', fontSize: 11, formatter: '{c} 小时' },
     },
   ],
 }))
@@ -798,8 +798,8 @@ function viewTask(task: DashboardTask) {
 
   th,
   td {
-    height: 42px;
-    padding: 6px 10px;
+    height: 50px;
+    padding: 8px 10px;
     border-top: 1px solid #eef2f7;
     text-align: left;
     vertical-align: middle;
@@ -807,7 +807,7 @@ function viewTask(task: DashboardTask) {
   }
 
   th {
-    height: 36px;
+    height: 38px;
     background: #f8fafc;
     color: #475569;
     font-weight: 600;
@@ -925,12 +925,12 @@ function viewTask(task: DashboardTask) {
   .tasks-table {
     th,
     td {
-      height: 36px;
-      padding: 4px 8px;
+      height: 42px;
+      padding: 6px 8px;
     }
 
     th {
-      height: 32px;
+      height: 34px;
     }
   }
 }
diff --git a/frontend/src/views/data-process/DataProcessCreateView.vue b/frontend/src/views/data-process/DataProcessCreateView.vue
index 4aea84e..9604226 100644
--- a/frontend/src/views/data-process/DataProcessCreateView.vue
+++ b/frontend/src/views/data-process/DataProcessCreateView.vue
@@ -47,7 +47,7 @@ const WIZARD_STEPS = [
   { id: 'upload', title: '上传文件', desc: '上传或接入待处理的源数据' },
   { id: 'preview', title: '数据预览', desc: '核对源文件与预览内容' },
   { id: 'generate', title: '开始生成', desc: '确认摘要并启动处理' },
-  { id: 'results', title: '编辑与保存', desc: '检查、修改并保存结果' },
+  { id: 'results', title: '结果编辑与保存', desc: '检查、修改并保存结果' },
 ] as const satisfies ReadonlyArray<{ id: StepId; title: string; desc: string }>
 const currentStep = ref(0)
 const currentStepId = computed<StepId>(() => WIZARD_STEPS[currentStep.value]?.id ?? 'create')
diff --git a/frontend/src/views/system/training-log/TrainingTaskOverview.vue b/frontend/src/views/system/training-log/TrainingTaskOverview.vue
index 2f0e493..1eef87b 100644
--- a/frontend/src/views/system/training-log/TrainingTaskOverview.vue
+++ b/frontend/src/views/system/training-log/TrainingTaskOverview.vue
@@ -61,6 +61,7 @@ function formatDateTime(value?: string) {
   margin-bottom: 0;
   border: 1px solid #e4e7ed !important;
   border-radius: 8px !important;
+  background: var(--app-surface-bg);
   box-shadow: none !important;
 }
 .overview-layout { width: 100%; }