diff --git a/CLAUDE.md b/CLAUDE.md
index 75b503b5..a951bdab 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -194,7 +194,8 @@ import { quickInsert } from '../../../services/canvas-operations';
 
 ### UI 规范
 
-- **Tooltips**：始终使用 `theme='light'`
+- **Tooltips**：始终使用 `theme='light'`，高层级容器内需显式设置更高 `zIndex` (如 20000)
+- **状态表意**：优先使用量化组件（如信号格）而非单一颜色圆点来展示程度差异
 - **按钮圆角**：8px
 - **卡片圆角**：12px
 - **动画时长**：150-300ms，ease-out 曲线
diff --git a/docs/CODING_RULES.md b/docs/CODING_RULES.md
index 632b0d20..5ff43754 100644
--- a/docs/CODING_RULES.md
+++ b/docs/CODING_RULES.md
@@ -3936,6 +3936,63 @@ const matchesSource = !filters.activeSource || filters.activeSource === 'ALL' ||
 
 ## UI 交互规范
 
+#### Tooltip 样式统一规范
+
+**场景**: 在项目中使用 TDesign 的 `Tooltip` 组件时。
+
+❌ **错误示例**:
+```tsx
+<Tooltip content="提示文字">
+  <Button icon={<Icon />} />
+</Tooltip>
+```
+
+✅ **正确示例**:
+```tsx
+<Tooltip content="提示文字" theme="light" showArrow={false}>
+  <Button icon={<Icon />} />
+</Tooltip>
+```
+
+**原因**: 为了保持项目视觉风格的高度统一，所有 Tooltip 必须使用 `theme="light"`（白底黑字）。同时，为了界面更简洁，推荐在图标按钮或紧凑列表项上使用 `showArrow={false}` 隐藏箭头。
+
+#### 高层级容器中的 Tooltip 遮挡问题
+
+**场景**: 在使用 `createPortal` 渲染的弹窗、下拉菜单或设置了极高 `zIndex` 的容器内部使用 `Tooltip` 时。
+
+❌ **错误示例**:
+```tsx
+// 在 zIndex: 10000 的下拉菜单中
+<Tooltip content="状态提示">
+  <div className="status-dot" />
+</Tooltip>
+// 结果：Tooltip 被挡在下拉菜单下面，看不见
+```
+
+✅ **正确示例**:
+```tsx
+<Tooltip content="状态提示" theme="light" zIndex={20000}>
+  <div className="status-dot" />
+</Tooltip>
+```
+
+**原因**: 项目中部分浮层（如模型选择下拉）使用了 `createPortal` 且 `zIndex` 达到 10000。默认层级的 `Tooltip` 会被遮挡。在这种情况下，必须显式将 `Tooltip` 的 `zIndex` 提升到更高（如 20000）以确保可见。
+
+#### 信号/状态展示的量化表意
+
+**场景**: 展示模型健康度、网络信号等需要量化感知的状态时。
+
+❌ **错误示例**:
+使用单一圆点或方块，仅靠颜色区分。用户难以感知“程度”的差异。
+
+✅ **正确示例**:
+使用“信号格”或“进度条”设计，配合颜色变化。
+- 3 格绿色：极佳
+- 2 格橙色：一般
+- 1 格红色：极差
+
+**原因**: 相比单一的圆点，信号格能更直观地传达“量”的概念，符合用户的直觉认知（如手机信号、WiFi 强度）。
+
 ### 可点击容器模式：扩大交互区域
 
 **场景**: 当 checkbox、按钮等小型交互元素嵌套在容器中时，用户期望点击整个容器都能触发操作。
diff --git a/packages/drawnix/src/components/ai-input-bar/ModelDropdown.tsx b/packages/drawnix/src/components/ai-input-bar/ModelDropdown.tsx
index a12fc273..38ecd7ad 100644
--- a/packages/drawnix/src/components/ai-input-bar/ModelDropdown.tsx
+++ b/packages/drawnix/src/components/ai-input-bar/ModelDropdown.tsx
@@ -242,6 +242,7 @@ export const ModelDropdown: React.FC<ModelDropdownProps> = ({
         >
           <span className="model-dropdown__at">#</span>
           <span className="model-dropdown__code">{shortCode}</span>
+          <ModelHealthBadge modelId={selectedModel} />
           <ChevronDown size={14} className={`model-dropdown__chevron ${isOpen ? 'model-dropdown__chevron--open' : ''}`} />
         </button>
       );
@@ -258,6 +259,7 @@ export const ModelDropdown: React.FC<ModelDropdownProps> = ({
         }}
       >
         <div className="model-dropdown__form-content">
+          <ModelHealthBadge modelId={selectedModel} />
           <input
             ref={triggerInputRef}
             type="text"
diff --git a/packages/drawnix/src/components/ai-input-bar/model-dropdown.scss b/packages/drawnix/src/components/ai-input-bar/model-dropdown.scss
index 02923bb6..77bd3806 100644
--- a/packages/drawnix/src/components/ai-input-bar/model-dropdown.scss
+++ b/packages/drawnix/src/components/ai-input-bar/model-dropdown.scss
@@ -11,6 +11,7 @@ $gray-medium: #9CA3AF;
 $gray-dark: #6B7280;
 $text-dark: #1F2937;
 $vip-color: #E91E63;
+$green-health: #10B981;
 
 .model-dropdown {
   position: relative;
@@ -36,29 +37,24 @@ $vip-color: #E91E63;
     border: none;
     cursor: pointer;
     transition: all 0.15s ease;
-
-    &:focus {
-      outline: none;
-    }
-
-    &:disabled {
-      cursor: not-allowed;
-    }
+    position: relative;
 
     &--minimal {
-      gap: 1px;
+      gap: 4px;
       padding: 4px 8px;
       border-radius: 4px;
       font-size: 13px;
       font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
       white-space: nowrap;
 
-      &:hover:not(:disabled) {
-        background: rgba($orange-primary, 0.1);
+      .model-dropdown__at {
+        color: $orange-primary;
+        font-weight: 600;
       }
 
-      &.model-dropdown__trigger--open {
-        background: rgba($orange-primary, 0.15);
+      .model-dropdown__code {
+        color: $gray-dark;
+        font-weight: 500;
       }
     }
 
@@ -69,15 +65,21 @@ $vip-color: #E91E63;
       border: 1px solid #d9d9d9;
       border-radius: 6px;
       min-height: 36px;
+      gap: 8px;
 
-      &:hover:not(:disabled) {
-        border-color: $orange-primary;
+      .model-dropdown__form-content {
+        display: flex;
+        align-items: center;
+        gap: 8px;
+        flex: 1;
+        min-width: 0;
       }
+    }
 
-      &.model-dropdown__trigger--open {
-        border-color: $orange-primary;
-        box-shadow: 0 0 0 2px rgba($orange-primary, 0.1);
-      }
+    // 触发器上的健康状态指示
+    .model-health-signal {
+      margin-left: -2px;
+      margin-right: 2px;
     }
   }
 
diff --git a/packages/drawnix/src/components/character/CharacterSelector.tsx b/packages/drawnix/src/components/character/CharacterSelector.tsx
index 8dea6ae1..a557a9e3 100644
--- a/packages/drawnix/src/components/character/CharacterSelector.tsx
+++ b/packages/drawnix/src/components/character/CharacterSelector.tsx
@@ -86,6 +86,7 @@ export const CharacterSelector: React.FC<CharacterSelectorProps> = ({
           <Tooltip
             content="从已完成的 Sora-2 视频中提取角色后可在此选择"
             theme="light"
+            showArrow={false}
           >
             <InfoCircleIcon style={{ marginLeft: 4, cursor: 'help' }} />
           </Tooltip>
@@ -111,6 +112,7 @@ export const CharacterSelector: React.FC<CharacterSelectorProps> = ({
             key={character.id}
             content={character.sourcePrompt || `@${character.username}`}
             theme="light"
+            showArrow={false}
           >
             <div
               className={`character-selector__chip ${selectedIds.includes(character.id) ? 'character-selector__chip--selected' : ''}`}
@@ -133,6 +135,7 @@ export const CharacterSelector: React.FC<CharacterSelectorProps> = ({
           <Tooltip
             content={`还有 ${completedCharacters.length - maxVisible} 个角色`}
             theme="light"
+            showArrow={false}
           >
             <div className="character-selector__chip">
               +{completedCharacters.length - maxVisible}
diff --git a/packages/drawnix/src/components/media-library/MediaLibraryGrid.tsx b/packages/drawnix/src/components/media-library/MediaLibraryGrid.tsx
index 304a1d15..6acdbbfd 100644
--- a/packages/drawnix/src/components/media-library/MediaLibraryGrid.tsx
+++ b/packages/drawnix/src/components/media-library/MediaLibraryGrid.tsx
@@ -780,13 +780,13 @@ export function MediaLibraryGrid({
                 };
 
                 return (
-                  <Tooltip 
-                    key={group.id} 
-                    content={`${group.label}: ${isAsc ? '正序' : (isDesc ? '逆序' : '默认')}`} 
-                    placement="top" 
-                    theme="light" 
-                    showArrow={false}
-                  >
+          <Tooltip
+            key={group.id} 
+            content={`${group.label}: ${isAsc ? '正序' : (isDesc ? '逆序' : '默认')}`} 
+            placement="top" 
+            theme="light" 
+            showArrow={false}
+          >
                     <div
                       className={`media-library-grid__filter-option ${isActive ? 'media-library-grid__filter-option--active' : ''}`}
                       onClick={handleSortClick}
diff --git a/packages/drawnix/src/components/settings-dialog/settings-dialog.tsx b/packages/drawnix/src/components/settings-dialog/settings-dialog.tsx
index d135b0cd..872378d8 100644
--- a/packages/drawnix/src/components/settings-dialog/settings-dialog.tsx
+++ b/packages/drawnix/src/components/settings-dialog/settings-dialog.tsx
@@ -91,6 +91,7 @@ export const SettingsDialog = ({
                 }
                 placement="top"
                 theme='light'
+                showArrow={false}
               >
                 <InfoCircleIcon className="settings-dialog__tooltip-icon" />
               </Tooltip>
diff --git a/packages/drawnix/src/components/shared/ModelHealthBadge.tsx b/packages/drawnix/src/components/shared/ModelHealthBadge.tsx
index db4a57ee..d89f814d 100644
--- a/packages/drawnix/src/components/shared/ModelHealthBadge.tsx
+++ b/packages/drawnix/src/components/shared/ModelHealthBadge.tsx
@@ -6,6 +6,7 @@
  */
 
 import React from 'react';
+import { Tooltip } from 'tdesign-react';
 import { useModelHealth } from '../../hooks/useModelHealth';
 import './model-health-badge.scss';
 
@@ -37,14 +38,53 @@ export const ModelHealthBadge: React.FC<ModelHealthBadgeProps> = ({
         return null;
     }
 
-    const { statusLabel, statusColor } = status;
+    const { statusLabel, statusColor, errorRate } = status;
+
+    // 计算信号格数 (0-3格) 和 颜色
+    // errorRate 是 0-100
+    let bars = 3;
+    let barColor = statusColor;
+
+    if (errorRate > 80) {
+        bars = 1;
+        barColor = '#991B1B'; // 深红色
+    } else if (errorRate > 50) {
+        bars = 1;
+        barColor = '#EF4444'; // 红色
+    } else if (errorRate > 20) {
+        bars = 2;
+        barColor = '#C2410C'; // 深橙色
+    } else if (errorRate >= 1) {
+        bars = 2;
+        barColor = '#F97316'; // 浅橙色
+    } else {
+        bars = 3;
+        barColor = '#10B981'; // 绿色 (0 或 接近 0)
+    }
 
     return (
-        <span
-            className={`model-health-badge ${className}`}
-            title={statusLabel}
-            style={{ backgroundColor: statusColor }}
-        />
+        <Tooltip
+            content={errorRate > 0 ? `${statusLabel} (拥挤度：${errorRate}%)` : statusLabel}
+            theme="light"
+            placement="top"
+            showArrow={false}
+            zIndex={20000}
+        >
+            <div className={`model-health-signal ${className}`}>
+                <div 
+                    className={`model-health-signal__bar ${bars >= 1 ? 'active' : ''}`} 
+                    style={{ backgroundColor: bars >= 1 ? barColor : undefined }} 
+                />
+                <div 
+                    className={`model-health-signal__bar ${bars >= 2 ? 'active' : ''}`} 
+                    style={{ backgroundColor: bars >= 2 ? barColor : undefined }} 
+                />
+                <div 
+                    className={`model-health-signal__bar ${bars >= 3 ? 'active' : ''}`} 
+                    style={{ backgroundColor: bars >= 3 ? barColor : undefined }} 
+                />
+            </div>
+        </Tooltip>
     );
 };
 
diff --git a/packages/drawnix/src/components/shared/media-preview/MediaViewport.tsx b/packages/drawnix/src/components/shared/media-preview/MediaViewport.tsx
index ba7c27bd..86d7ff16 100644
--- a/packages/drawnix/src/components/shared/media-preview/MediaViewport.tsx
+++ b/packages/drawnix/src/components/shared/media-preview/MediaViewport.tsx
@@ -337,6 +337,7 @@ export const MediaViewport: React.FC<MediaViewportProps> = ({
               content={toolbarOrientation === 'horizontal' ? '切换为垂直布局' : '切换为水平布局'}
               theme="light"
               placement="top"
+              showArrow={false}
             >
               <button
                 type="button"
diff --git a/packages/drawnix/src/components/shared/media-preview/ViewerToolbar.tsx b/packages/drawnix/src/components/shared/media-preview/ViewerToolbar.tsx
index 65103018..2687537e 100644
--- a/packages/drawnix/src/components/shared/media-preview/ViewerToolbar.tsx
+++ b/packages/drawnix/src/components/shared/media-preview/ViewerToolbar.tsx
@@ -65,6 +65,7 @@ export const ViewerToolbar: React.FC<ViewerToolbarProps> = ({
           theme="light"
           placement="bottom"
           zIndex={TOOLTIP_Z_INDEX}
+          showArrow={false}
         >
           <button
             className="viewer-toolbar__btn"
@@ -86,6 +87,7 @@ export const ViewerToolbar: React.FC<ViewerToolbarProps> = ({
         theme="light"
         placement="bottom"
         zIndex={TOOLTIP_Z_INDEX}
+        showArrow={false}
       >
         <button
           className="viewer-toolbar__btn"
@@ -108,6 +110,7 @@ export const ViewerToolbar: React.FC<ViewerToolbarProps> = ({
             theme="light"
             placement="bottom"
             zIndex={TOOLTIP_Z_INDEX}
+            showArrow={false}
           >
             <button
               className={`viewer-toolbar__btn viewer-toolbar__btn--small ${
@@ -130,6 +133,7 @@ export const ViewerToolbar: React.FC<ViewerToolbarProps> = ({
           theme="light"
           placement="bottom"
           zIndex={TOOLTIP_Z_INDEX}
+          showArrow={false}
         >
           <button
             className={`viewer-toolbar__btn ${
@@ -145,6 +149,7 @@ export const ViewerToolbar: React.FC<ViewerToolbarProps> = ({
           theme="light"
           placement="bottom"
           zIndex={TOOLTIP_Z_INDEX}
+          showArrow={false}
         >
           <button
             className={`viewer-toolbar__btn ${
@@ -160,6 +165,7 @@ export const ViewerToolbar: React.FC<ViewerToolbarProps> = ({
           theme="light"
           placement="bottom"
           zIndex={TOOLTIP_Z_INDEX}
+          showArrow={false}
         >
           <button
             className={`viewer-toolbar__btn ${
@@ -180,6 +186,7 @@ export const ViewerToolbar: React.FC<ViewerToolbarProps> = ({
         theme="light"
         placement="bottom"
         zIndex={TOOLTIP_Z_INDEX}
+        showArrow={false}
       >
         <button
           className={`viewer-toolbar__btn ${
@@ -198,6 +205,7 @@ export const ViewerToolbar: React.FC<ViewerToolbarProps> = ({
           theme="light"
           placement="bottom"
           zIndex={TOOLTIP_Z_INDEX}
+          showArrow={false}
         >
           <button className="viewer-toolbar__btn" onClick={onResetView}>
             <RotateCcw size={18} />
@@ -221,6 +229,7 @@ export const ViewerToolbar: React.FC<ViewerToolbarProps> = ({
             theme="light"
             placement="bottom"
             zIndex={TOOLTIP_Z_INDEX}
+            showArrow={false}
           >
             <button className="viewer-toolbar__btn" onClick={onFullscreen}>
               <Maximize2 size={18} />
@@ -234,6 +243,7 @@ export const ViewerToolbar: React.FC<ViewerToolbarProps> = ({
           theme="light"
           placement="bottom"
           zIndex={TOOLTIP_Z_INDEX}
+          showArrow={false}
         >
           <button
             className="viewer-toolbar__btn viewer-toolbar__btn--close"
diff --git a/packages/drawnix/src/components/shared/model-health-badge.scss b/packages/drawnix/src/components/shared/model-health-badge.scss
index e1093508..1b576653 100644
--- a/packages/drawnix/src/components/shared/model-health-badge.scss
+++ b/packages/drawnix/src/components/shared/model-health-badge.scss
@@ -1,35 +1,50 @@
 /**
- * 模型健康状态徽章样式
- * 固定大小的彩色方块
+ * 模型健康状态信号样式
+ * 3格信号塔设计
  */
 
-.model-health-badge {
-    display: inline-block;
-    width: 8px;
-    height: 14px;
-    border-radius: 2px;
-    flex-shrink: 0;
-    cursor: help;
+$gray-light: #e5e7eb;
 
-    // 微弱的发光效果增加辨识度
-    box-shadow: 0 0 3px rgba(0, 0, 0, 0.15);
+.model-health-signal {
+    display: inline-flex;
+    align-items: flex-end;
+    gap: 1.5px;
+    height: 10px;
+    padding: 0 2px;
+    cursor: help;
+    flex-shrink: 0;
+
+    &__bar {
+        width: 2.5px;
+        background-color: $gray-light;
+        border-radius: 0.5px;
+        transition: all 0.2s ease;
+
+        &:nth-child(1) { height: 40%; }
+        &:nth-child(2) { height: 70%; }
+        &:nth-child(3) { height: 100%; }
+
+        &.active {
+            // 背景色由 inline style 控制
+        }
+    }
 }
 
 // 在 ModelDropdown 列表项中的位置
 .model-dropdown__item-name {
     display: flex;
     align-items: center;
-    flex-wrap: wrap;
-    gap: 4px;
+    flex-wrap: nowrap;
+    gap: 6px;
 
-    .model-health-badge {
-        margin-left: 4px;
+    .model-health-signal {
+        margin-left: 2px;
     }
 }
 
 // 在 ModelSelector 列表项中的位置
 .ai-model-selector__item-name {
-    .model-health-badge {
+    .model-health-signal {
         margin-left: 4px;
     }
 }
@@ -38,10 +53,10 @@
 .ai-input-bar__at-suggestion-item-name {
     display: flex;
     align-items: center;
-    flex-wrap: wrap;
-    gap: 4px;
+    flex-wrap: nowrap;
+    gap: 6px;
 
-    .model-health-badge {
-        margin-left: 4px;
+    .model-health-signal {
+        margin-left: 2px;
     }
-}
\ No newline at end of file
+}
diff --git a/packages/drawnix/src/components/ttd-dialog/batch-image-generation.tsx b/packages/drawnix/src/components/ttd-dialog/batch-image-generation.tsx
index 14e7fdf6..3ec731f6 100644
--- a/packages/drawnix/src/components/ttd-dialog/batch-image-generation.tsx
+++ b/packages/drawnix/src/components/ttd-dialog/batch-image-generation.tsx
@@ -2081,18 +2081,19 @@ const BatchImageGeneration: React.FC<BatchImageGenerationProps> = ({ onSwitchToS
                   {rowInfo.tasks[0].error.message}
                 </span>
                 {rowInfo.tasks[0].error.details?.originalError && (
-                  <Tooltip
-                    content={
-                      <div className="error-details-tooltip">
-                        <div className="error-details-title">原始错误信息:</div>
-                        <div className="error-details-content">
-                          {rowInfo.tasks[0].error.details.originalError}
-                        </div>
+                <Tooltip
+                  content={
+                    <div className="error-details-tooltip">
+                      <div className="error-details-title">原始错误信息:</div>
+                      <div className="error-details-content">
+                        {rowInfo.tasks[0].error.details.originalError}
                       </div>
-                    }
-                    theme="light"
-                    placement="bottom"
-                  >
+                    </div>
+                  }
+                  theme="light"
+                  placement="bottom"
+                  showArrow={false}
+                >
                     <span className="preview-error-details-link">[详情]</span>
                   </Tooltip>
                 )}
diff --git a/packages/drawnix/src/components/ttd-dialog/shared/AspectRatioSelector.tsx b/packages/drawnix/src/components/ttd-dialog/shared/AspectRatioSelector.tsx
index 5515943a..80c88550 100644
--- a/packages/drawnix/src/components/ttd-dialog/shared/AspectRatioSelector.tsx
+++ b/packages/drawnix/src/components/ttd-dialog/shared/AspectRatioSelector.tsx
@@ -74,12 +74,13 @@ export const AspectRatioSelector: React.FC<AspectRatioSelectorProps> = ({
           <div className="aspect-ratio-selector__dropdown">
             <div className="aspect-ratio-selector__dropdown-grid">
               {ASPECT_RATIO_OPTIONS.map((option) => (
-                <Tooltip
-                  key={option.value}
-                  content={option.description}
-                  theme="light"
-                  placement="top"
-                >
+          <Tooltip
+            key={option.value}
+            content={option.description}
+            theme="light"
+            placement="top"
+            showArrow={false}
+          >
                   <div
                     className={`aspect-ratio-selector__dropdown-item ${
                       value === option.value ? 'aspect-ratio-selector__dropdown-item--selected' : ''
@@ -112,6 +113,7 @@ export const AspectRatioSelector: React.FC<AspectRatioSelectorProps> = ({
             content={option.description}
             theme="light"
             placement="top"
+            showArrow={false}
           >
             <div
               className={`aspect-ratio-selector__option ${