diff --git a/frontend/src/App.css b/frontend/src/App.css
index e6ad6e2..9afbf9a 100644
--- a/frontend/src/App.css
+++ b/frontend/src/App.css
@@ -1623,15 +1623,17 @@ body {
 }
 
 .scenario-chip--add .scenario-chip__icon {
-  font-size: 0.88rem;
-  font-weight: 300;
-  line-height: 1;
+  display: inline-flex;
+  align-items: center;
 }
 
 .scenario-chip__icon {
   font-size: 0.9rem;
   line-height: 1;
   flex-shrink: 0;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
 }
 
 .scenario-chip__name {
@@ -1681,6 +1683,9 @@ body {
   font-size: 0.72rem;
   color: var(--color-text-muted);
   flex-shrink: 0;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
 }
 
 .device-select {
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index d485be6..df95d42 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -19,11 +19,34 @@ import { EditScenarioModal } from "./components/EditScenarioModal";
 import { AuthProvider, useAuth } from "./lib/auth";
 import { loadConfig, loadTheme, saveTheme } from "./lib/storage";
 import { I18nContext, parseLocale, t } from "./lib/i18n";
+import { renderScenarioIconById } from "./lib/scenarioIcons";
 import type { Locale } from "./lib/i18n";
 import type { Theme } from "./types";
 import type { UserScenario } from "./lib/api/scenarios";
 import "./App.css";
 
+// ---- 统一 SVG 图标系统（Feather-style，stroke-based） ----
+
+const SVG_PROPS = { width: 14, height: 14, viewBox: "0 0 24 24", fill: "none", stroke: "currentColor", strokeWidth: 2, strokeLinecap: "round" as const, strokeLinejoin: "round" as const };
+
+/** 系统情景 SVG 图标映射 */
+function scenarioSvgIcon(id: string) {
+  switch (id) {
+    case "free_chat":
+      return (<svg {...SVG_PROPS}><path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"/></svg>);
+    case "interviewer":
+      return (<svg {...SVG_PROPS}><circle cx="12" cy="12" r="10"/><circle cx="12" cy="12" r="6"/><circle cx="12" cy="12" r="2"/></svg>);
+    case "english_teacher":
+      return (<svg {...SVG_PROPS}><path d="M4 19.5A2.5 2.5 0 0 1 6.5 17H20"/><path d="M6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5v-15A2.5 2.5 0 0 1 6.5 2z"/></svg>);
+    case "debate":
+      return (<svg {...SVG_PROPS}><path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"/><path d="M8 10h8"/><path d="M8 14h4"/></svg>);
+    case "interpreter":
+      return (<svg {...SVG_PROPS}><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>);
+    default:
+      return null;
+  }
+}
+
 /** 内部组件，确保在 I18nContext.Provider 内部使用 hooks */
 function AppContent() {
   const { isAuthenticated, isLoading, user, logout, accessToken } = useAuth();
@@ -378,7 +401,7 @@ function AppContent() {
               <div className="video-indicator video-indicator--audio">{tr("video.playing")}</div>
             )}
             {vadError && (
-              <div className="video-indicator video-indicator--error">⚠️ {vadError}</div>
+              <div className="video-indicator video-indicator--error"><svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"/><line x1="12" y1="9" x2="12" y2="13"/><line x1="12" y1="17" x2="12.01" y2="17"/></svg> {vadError}</div>
             )}
             {!isConnected && !stream && (
               <div className="video-placeholder">
@@ -412,7 +435,9 @@ function AppContent() {
                   onClick={() => handleSelectScenario(sc.id)}
                   title={sc.description ? sc.description : sc.descKey ? tr(sc.descKey) : sc.name}
                 >
-                  <span className="scenario-chip__icon">{sc.icon}</span>
+                  <span className="scenario-chip__icon">
+                    {scenarioSvgIcon(sc.id) || renderScenarioIconById(sc.icon, 14) || sc.icon}
+                  </span>
                   <span className="scenario-chip__name">{sc.nameKey ? tr(sc.nameKey) : sc.name}</span>
                 </button>
               ))}
@@ -422,7 +447,9 @@ function AppContent() {
                 onClick={() => setShowCreateScenario(true)}
                 title={tr("scenario.create.button")}
               >
-                <span className="scenario-chip__icon">+</span>
+                <span className="scenario-chip__icon">
+                  <svg {...SVG_PROPS}><line x1="12" y1="5" x2="12" y2="19"/><line x1="5" y1="12" x2="19" y2="12"/></svg>
+                </span>
                 <span className="scenario-chip__name">{tr("scenario.createChip")}</span>
               </button>
             </div>
@@ -510,7 +537,7 @@ function AppContent() {
                 {/* 设备选择器 */}
                 <div className="video-controls__devices">
                   <div className="device-select-wrapper">
-                    <label className="device-select-label">📷</label>
+                    <label className="device-select-label"><svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M23 19a2 2 0 0 1-2 2H3a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h4l2-3h6l2 3h4a2 2 0 0 1 2 2z"/><circle cx="12" cy="13" r="4"/></svg></label>
                     <select
                       className="device-select"
                       value={config.cameraDeviceId || "default"}
@@ -523,7 +550,7 @@ function AppContent() {
                     </select>
                   </div>
                   <div className="device-select-wrapper">
-                    <label className="device-select-label">🎤</label>
+                    <label className="device-select-label"><svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M12 1a3 3 0 0 0-3 3v8a3 3 0 0 0 6 0V4a3 3 0 0 0-3-3z"/><path d="M19 10v2a7 7 0 0 1-14 0v-2"/><line x1="12" y1="19" x2="12" y2="23"/><line x1="8" y1="23" x2="16" y2="23"/></svg></label>
                     <select
                       className="device-select"
                       value={config.micDeviceId || "default"}
@@ -542,7 +569,7 @@ function AppContent() {
                 {/* 文字对话态：视频已结束 */}
                 <div className="video-controls__text-only">
                   <div className="video-ended-hint">
-                    <span className="video-ended-hint__title">📹 {tr("video.ended")}</span>
+                    <span className="video-ended-hint__title"><svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M23 19a2 2 0 0 1-2 2H3a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h4l2-3h6l2 3h4a2 2 0 0 1 2 2z"/><circle cx="12" cy="13" r="4"/></svg> {tr("video.ended")}</span>
                     <span className="video-ended-hint__sub">{tr("video.ended.hint")}</span>
                   </div>
                   <div className="video-controls__toolbar">
diff --git a/frontend/src/components/ChatPanel/index.tsx b/frontend/src/components/ChatPanel/index.tsx
index d213195..8bfbd0e 100644
--- a/frontend/src/components/ChatPanel/index.tsx
+++ b/frontend/src/components/ChatPanel/index.tsx
@@ -4,7 +4,7 @@
 // 增强：空状态情景选择卡片、语音输入按钮
 // ============================================================
 
-import { useEffect, useRef, useState } from "react";
+import { ReactNode, useEffect, useRef, useState } from "react";
 import { useI18n } from "../../lib/i18n";
 import { scenarios } from "../../lib/scenarios";
 import type { ChatMessage } from "../../types";
@@ -28,12 +28,13 @@ interface ChatPanelProps {
 }
 
 /** 场景卡片数据（视觉分析快捷） */
-function getSceneCards(t: (key: string) => string) {
+function getSceneCards(t: (key: string) => string): { icon: ReactNode; titleKey: string; descKey: string; prompt: string }[] {
+  const svgProps = { width: 14, height: 14, viewBox: "0 0 24 24", fill: "none", stroke: "currentColor", strokeWidth: 2, strokeLinecap: "round" as const, strokeLinejoin: "round" as const };
   return [
-    { icon: "👁", titleKey: "scene.describe", descKey: "scene.describe.desc", prompt: t("scene.describe") },
-    { icon: "🔤", titleKey: "scene.text", descKey: "scene.text.desc", prompt: t("scene.text") },
-    { icon: "📦", titleKey: "scene.object", descKey: "scene.object.desc", prompt: t("scene.object") },
-    { icon: "💡", titleKey: "scene.suggest", descKey: "scene.suggest.desc", prompt: t("scene.suggest") },
+    { icon: <svg {...svgProps}><path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"/><circle cx="12" cy="12" r="3"/></svg>, titleKey: "scene.describe", descKey: "scene.describe.desc", prompt: t("scene.describe") },
+    { icon: <svg {...svgProps}><polyline points="4 7 4 4 20 4 20 7"/><line x1="9" y1="20" x2="15" y2="20"/><line x1="12" y1="4" x2="12" y2="20"/></svg>, titleKey: "scene.text", descKey: "scene.text.desc", prompt: t("scene.text") },
+    { icon: <svg {...svgProps}><path d="M21 16V8a2 2 0 0 0-1-1.73l-7-4a2 2 0 0 0-2 0l-7 4A2 2 0 0 0 3 8v8a2 2 0 0 0 1 1.73l7 4a2 2 0 0 0 2 0l7-4A2 2 0 0 0 21 16z"/><polyline points="3.27 6.96 12 12.01 20.73 6.96"/><line x1="12" y1="22.08" x2="12" y2="12"/></svg>, titleKey: "scene.object", descKey: "scene.object.desc", prompt: t("scene.object") },
+    { icon: <svg {...svgProps}><line x1="9" y1="18" x2="15" y2="18"/><line x1="10" y1="22" x2="14" y2="22"/><path d="M15.09 14c.18-.98.65-1.74 1.41-2.5A4.65 4.65 0 0 0 18 8 6 6 0 0 0 6 8c0 1 .23 2.23 1.5 3.5A4.61 4.61 0 0 1 8.91 14"/></svg>, titleKey: "scene.suggest", descKey: "scene.suggest.desc", prompt: t("scene.suggest") },
   ];
 }
 
@@ -124,7 +125,7 @@ export function ChatPanel({
         {/* 空状态：欢迎信息 */}
         {isEmpty && (
           <div className="chat-panel__welcome">
-            <span className="chat-panel__welcome-icon">{scenarios.find(s => s.id === activeScenario)?.icon || "💬"}</span>
+            <span className="chat-panel__welcome-icon">{scenarios.find(s => s.id === activeScenario)?.icon || <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.2" strokeLinecap="round" strokeLinejoin="round"><path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"/></svg>}</span>
             <p>{isConnected ? t("chat.welcome.prompt") : t("chat.empty.prompt")}</p>
             <span className="chat-panel__welcome-hint">{isConnected ? t("chat.welcome.hint") : t("chat.empty.hint")}</span>
 
@@ -242,7 +243,7 @@ export function ChatPanel({
               onClick={onToggleMic}
               title={t("chat.input.voice")}
             >
-              🎤
+              <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M12 1a3 3 0 0 0-3 3v8a3 3 0 0 0 6 0V4a3 3 0 0 0-3-3z"/><path d="M19 10v2a7 7 0 0 1-14 0v-2"/><line x1="12" y1="19" x2="12" y2="23"/><line x1="8" y1="23" x2="16" y2="23"/></svg>
             </button>
           )}
           <button
@@ -251,7 +252,7 @@ export function ChatPanel({
             disabled={!inputText.trim() || connectionStatus === "connecting"}
             title={t("chat.send")}
           >
-            ➤
+            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><line x1="22" y1="2" x2="11" y2="13"/><polygon points="22 2 15 22 11 13 2 9 22 2"/></svg>
           </button>
         </form>
       )}
diff --git a/frontend/src/components/ConfigPanel/index.tsx b/frontend/src/components/ConfigPanel/index.tsx
index 00a0cae..f7b84ca 100644
--- a/frontend/src/components/ConfigPanel/index.tsx
+++ b/frontend/src/components/ConfigPanel/index.tsx
@@ -197,7 +197,7 @@ export function ConfigPanel({
                         onClick={() => onEditScenario(sc as unknown as UserScenario)}
                         title={t("common.edit")}
                       >
-                        ✏️
+                        <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7"/><path d="M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z"/></svg>
                       </button>
                       <button
                         className={`scenario-action-btn scenario-action-btn--delete ${
@@ -206,7 +206,7 @@ export function ConfigPanel({
                         onClick={() => handleDelete(sc.id)}
                         title={deleteConfirm === sc.id ? t("common.confirmDelete") : t("common.delete")}
                       >
-                        {deleteConfirm === sc.id ? "✓" : "🗑"}
+                        {deleteConfirm === sc.id ? "✓" : <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><polyline points="3 6 5 6 21 6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/></svg>}
                       </button>
                     </div>
                   </div>
diff --git a/frontend/src/components/CreateScenarioModal/index.tsx b/frontend/src/components/CreateScenarioModal/index.tsx
index 5d15c71..4d45f84 100644
--- a/frontend/src/components/CreateScenarioModal/index.tsx
+++ b/frontend/src/components/CreateScenarioModal/index.tsx
@@ -6,24 +6,17 @@
 import { useCallback, useEffect, useRef, useState } from "react";
 import { useI18n } from "../../lib/i18n";
 import type { CreateScenarioRequest } from "../../lib/api/scenarios";
+import { SCENARIO_ICON_SET, DEFAULT_SCENARIO_ICON_ID } from "../../lib/scenarioIcons";
 
 interface CreateScenarioModalProps {
   onClose: () => void;
   onSubmit: (data: CreateScenarioRequest) => Promise<void>;
 }
 
-// 预设常用图标
-const PRESET_ICONS = [
-  "✨", "🎭", "🎨", "🎯", "🎪", "🎬",
-  "📖", "📚", "📝", "📋", "📌", "📍",
-  "🔬", "🔭", "🔮", "💡", "💼", "💻",
-  "🎓", "🎤", "🎵", "🎸", "🎹", "🎺",
-];
-
 export function CreateScenarioModal({ onClose, onSubmit }: CreateScenarioModalProps) {
   const { t } = useI18n();
   const [name, setName] = useState("");
-  const [icon, setIcon] = useState("✨");
+  const [icon, setIcon] = useState(DEFAULT_SCENARIO_ICON_ID);
   const [description, setDescription] = useState("");
   const [prompt, setPrompt] = useState("");
   const [greeting, setGreeting] = useState("");
@@ -134,14 +127,15 @@ export function CreateScenarioModal({ onClose, onSubmit }: CreateScenarioModalPr
           <div className="form-group">
             <label className="form-label">{t("scenario.create.icon")}</label>
             <div className="icon-picker">
-              {PRESET_ICONS.map((ic) => (
+              {SCENARIO_ICON_SET.map((ic) => (
                 <button
-                  key={ic}
+                  key={ic.id}
                   type="button"
-                  className={`icon-picker__item ${icon === ic ? "icon-picker__item--active" : ""}`}
-                  onClick={() => setIcon(ic)}
+                  className={`icon-picker__item ${icon === ic.id ? "icon-picker__item--active" : ""}`}
+                  onClick={() => setIcon(ic.id)}
+                  title={ic.label}
                 >
-                  {ic}
+                  {ic.render(22)}
                 </button>
               ))}
             </div>
diff --git a/frontend/src/components/EditScenarioModal/index.tsx b/frontend/src/components/EditScenarioModal/index.tsx
index 1f6aad0..1aec034 100644
--- a/frontend/src/components/EditScenarioModal/index.tsx
+++ b/frontend/src/components/EditScenarioModal/index.tsx
@@ -6,6 +6,7 @@
 import { useCallback, useEffect, useRef, useState } from "react";
 import { useI18n } from "../../lib/i18n";
 import type { UpdateScenarioRequest, UserScenario } from "../../lib/api/scenarios";
+import { SCENARIO_ICON_SET } from "../../lib/scenarioIcons";
 
 interface EditScenarioModalProps {
   scenario: UserScenario;
@@ -13,14 +14,6 @@ interface EditScenarioModalProps {
   onSubmit: (id: string, data: UpdateScenarioRequest) => Promise<void>;
 }
 
-// 预设常用图标
-const PRESET_ICONS = [
-  "✨", "🎭", "🎨", "🎯", "🎪", "🎬",
-  "📖", "📚", "📝", "📋", "📌", "📍",
-  "🔬", "🔭", "🔮", "💡", "💼", "💻",
-  "🎓", "🎤", "🎵", "🎸", "🎹", "🎺",
-];
-
 export function EditScenarioModal({ scenario, onClose, onSubmit }: EditScenarioModalProps) {
   const { t } = useI18n();
   const [name, setName] = useState(scenario.name);
@@ -135,14 +128,27 @@ export function EditScenarioModal({ scenario, onClose, onSubmit }: EditScenarioM
           <div className="form-group">
             <label className="form-label">{t("scenario.create.icon")}</label>
             <div className="icon-picker">
-              {PRESET_ICONS.map((ic) => (
+              {/* 如果当前图标是旧版 emoji（不在 SVG 图标集中），显示为可选项 */}
+              {!SCENARIO_ICON_SET.some((ic) => ic.id === icon) && (
                 <button
-                  key={ic}
+                  key="__legacy"
                   type="button"
-                  className={`icon-picker__item ${icon === ic ? "icon-picker__item--active" : ""}`}
-                  onClick={() => setIcon(ic)}
+                  className={`icon-picker__item icon-picker__item--active`}
+                  onClick={() => {/* already selected, no-op */}}
+                  title="当前图标（旧版）"
                 >
-                  {ic}
+                  {icon}
+                </button>
+              )}
+              {SCENARIO_ICON_SET.map((ic) => (
+                <button
+                  key={ic.id}
+                  type="button"
+                  className={`icon-picker__item ${icon === ic.id ? "icon-picker__item--active" : ""}`}
+                  onClick={() => setIcon(ic.id)}
+                  title={ic.label}
+                >
+                  {ic.render(22)}
                 </button>
               ))}
             </div>
diff --git a/frontend/src/components/LandingPage/index.tsx b/frontend/src/components/LandingPage/index.tsx
index 9a94714..dc63f11 100644
--- a/frontend/src/components/LandingPage/index.tsx
+++ b/frontend/src/components/LandingPage/index.tsx
@@ -180,13 +180,13 @@ export function LandingPage() {
           <div className="lp-flow-wrapper lp-fade-in">
             <div className="lp-flow-steps">
               {[
-                { icon: "📷", label: "摄像头采集" },
-                { icon: "🧠", label: "边缘预处理" },
-                { icon: "🔌", label: "WebSocket" },
-                { icon: "⚡", label: "Eino 编排" },
-                { icon: "👁️", label: "视觉理解" },
-                { icon: "💬", label: "流式回复" },
-                { icon: "🔊", label: "语音输出" },
+                { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M23 19a2 2 0 0 1-2 2H3a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h4l2-3h6l2 3h4a2 2 0 0 1 2 2z"/><circle cx="12" cy="13" r="4"/></svg>, label: "摄像头采集" },
+                { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M12 2a5 5 0 0 1 5 5c0 1.5-.7 2.8-1.7 3.7L12 14l-3.3-3.3A5 5 0 0 1 12 2z"/><path d="M12 14v8"/><path d="M8 18h8"/></svg>, label: "边缘预处理" },
+                { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.55a11 11 0 0 1 14.08 0"/><path d="M1.42 9a16 16 0 0 1 21.16 0"/><path d="M8.53 16.11a6 6 0 0 1 6.95 0"/><line x1="12" y1="20" x2="12.01" y2="20"/></svg>, label: "WebSocket" },
+                { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><polygon points="13 2 3 14 12 14 11 22 21 10 12 10 13 2"/></svg>, label: "Eino 编排" },
+                { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"/><circle cx="12" cy="12" r="3"/></svg>, label: "视觉理解" },
+                { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"/></svg>, label: "流式回复" },
+                { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><polygon points="11 5 6 9 2 9 2 15 6 15 11 19 11 5"/><path d="M19.07 4.93a10 10 0 0 1 0 14.14"/><path d="M15.54 8.46a5 5 0 0 1 0 7.07"/></svg>, label: "语音输出" },
               ].map((step, i, arr) => (
                 <div key={i} style={{ display: "contents" }}>
                   <div className="lp-flow-step">
@@ -212,27 +212,27 @@ export function LandingPage() {
           <div className="lp-features-grid">
             {[
               {
-                num: "01", icon: "⚡",
+                num: "01", icon: <svg width={24} height={24} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><polygon points="13 2 3 14 12 14 11 22 21 10 12 10 13 2"/></svg>,
                 title: "流式并行推送",
                 desc: "LLM 文本流与 TTS 音频流并行输出。用户先看到文字，紧接着听到语音，感知延迟低于 0.5 秒，接近真人对话节奏。",
               },
               {
-                num: "02", icon: "🧠",
+                num: "02", icon: <svg width={24} height={24} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M12 2a5 5 0 0 1 5 5c0 1.5-.7 2.8-1.7 3.7L12 14l-3.3-3.3A5 5 0 0 1 12 2z"/><path d="M12 14v8"/><path d="M8 18h8"/></svg>,
                 title: "声明式 AI 编排",
                 desc: "基于 CloudWeGo Eino Graph 的 7 节点 DAG 流水线（STT → History → ChatModel → Splitter → TTS），类型安全、可扩展、易测试。",
               },
               {
-                num: "03", icon: "💰",
+                num: "03", icon: <svg width={24} height={24} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><line x1="12" y1="1" x2="12" y2="23"/><path d="M17 5H9.5a3.5 3.5 0 0 0 0 7h5a3.5 3.5 0 0 1 0 7H6"/></svg>,
                 title: "端云协同降本",
                 desc: "浏览器端 VAD 语音检测 + 关键帧像素比较 + 混合采样策略，节省 70% 带宽，月成本从 $5,000 降至 $300，降幅 90%。",
               },
               {
-                num: "04", icon: "🎯",
+                num: "04", icon: <svg width={24} height={24} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><circle cx="12" cy="12" r="10"/><circle cx="12" cy="12" r="6"/><circle cx="12" cy="12" r="2"/></svg>,
                 title: "多场景智能模式",
                 desc: "5 种 AI 角色（自由对话 / 模拟面试 / 英语老师 / 辩论对手 / 同声翻译）× 3 种视觉模式 × 观察模式，灵活覆盖学习与工作。",
               },
               {
-                num: "05", icon: "🏗️",
+                num: "05", icon: <svg width={24} height={24} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><rect x="4" y="2" width="16" height="20" rx="2" ry="2"/><line x1="12" y1="18" x2="12" y2="18"/><line x1="12" y1="6" x2="12" y2="6"/><line x1="4" y1="10" x2="20" y2="10"/><line x1="8" y1="2" x2="8" y2="10"/><line x1="16" y1="10" x2="16" y2="18"/></svg>,
                 title: "生产级工程架构",
                 desc: "三级存储自动降级（Memory → Redis → PostgreSQL）、JWT 双 token 认证、Docker Compose 一键部署、完善的错误处理与降级策略。",
               },
@@ -259,11 +259,11 @@ export function LandingPage() {
           </div>
           <div className="lp-users-grid">
             {[
-              { avatar: "🧑‍🎓", title: "语言学习者", desc: "对着课本或实物，与 AI 英语外教用英语自由对话，实时纠正语法和发音" },
-              { avatar: "💼", title: "面试准备者", desc: "开启模拟面试模式，AI 面试官通过摄像头观察你的表情与状态，给出针对性反馈" },
-              { avatar: "🌍", title: "跨境交流者", desc: "出国旅行时对着外文菜单、路牌实时翻译，AI 语音播报翻译结果" },
-              { avatar: "👁️", title: "视障人士", desc: "AI 实时描述摄像头画面中的环境、障碍物和文字，提供无障碍信息辅助" },
-              { avatar: "🔬", title: "学生 / 教师", desc: "对着题目问「怎么做？」，AI 看到画面后逐步讲解，就像身边有一位私教" },
+              { avatar: <svg width={20} height={20} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2"/><circle cx="12" cy="7" r="4"/></svg>, title: "语言学习者", desc: "对着课本或实物，与 AI 英语外教用英语自由对话，实时纠正语法和发音" },
+              { avatar: <svg width={20} height={20} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><rect x="2" y="7" width="20" height="14" rx="2" ry="2"/><path d="M16 21V5a2 2 0 0 0-2-2h-4a2 2 0 0 0-2 2v16"/></svg>, title: "面试准备者", desc: "开启模拟面试模式，AI 面试官通过摄像头观察你的表情与状态，给出针对性反馈" },
+              { avatar: <svg width={20} height={20} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>, title: "跨境交流者", desc: "出国旅行时对着外文菜单、路牌实时翻译，AI 语音播报翻译结果" },
+              { avatar: <svg width={20} height={20} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"/><circle cx="12" cy="12" r="3"/></svg>, title: "视障人士", desc: "AI 实时描述摄像头画面中的环境、障碍物和文字，提供无障碍信息辅助" },
+              { avatar: <svg width={20} height={20} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><circle cx="11" cy="11" r="8"/><line x1="21" y1="21" x2="16.65" y2="16.65"/></svg>, title: "学生 / 教师", desc: "对着题目问「怎么做？」，AI 看到画面后逐步讲解，就像身边有一位私教" },
             ].map((u) => (
               <div className="lp-user-card lp-fade-in" key={u.title}>
                 <div className="lp-user-card__avatar">{u.avatar}</div>
@@ -283,11 +283,11 @@ export function LandingPage() {
           </div>
           <div className="lp-scenes-list">
             {[
-              { icon: "💬", title: "自由对话", desc: "对着摄像头随意聊天，AI 实时理解画面并语音回答", tag: "通用" },
-              { icon: "🗣️", title: "英语老师", desc: "AI 外教结合摄像头场景进行英语口语教学，实时纠正语法", tag: "学习" },
-              { icon: "🎤", title: "模拟面试", desc: "AI 面试官根据你的回答追问，通过摄像头观察你的表现", tag: "求职" },
-              { icon: "⚔️", title: "辩论对手", desc: "AI 反驳你的观点，锻炼你的逻辑思维和表达能力", tag: "思维" },
-              { icon: "🌐", title: "同声翻译", desc: "实时识别画面中的外语文字并语音翻译，口语化输出", tag: "工具" },
+              { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"/></svg>, title: "自由对话", desc: "对着摄像头随意聊天，AI 实时理解画面并语音回答", tag: "通用" },
+              { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M12 1a3 3 0 0 0-3 3v8a3 3 0 0 0 6 0V4a3 3 0 0 0-3-3z"/><path d="M19 10v2a7 7 0 0 1-14 0v-2"/><line x1="12" y1="19" x2="12" y2="23"/><line x1="8" y1="23" x2="16" y2="23"/></svg>, title: "英语老师", desc: "AI 外教结合摄像头场景进行英语口语教学，实时纠正语法", tag: "学习" },
+              { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M12 1a3 3 0 0 0-3 3v8a3 3 0 0 0 6 0V4a3 3 0 0 0-3-3z"/><path d="M19 10v2a7 7 0 0 1-14 0v-2"/><line x1="12" y1="19" x2="12" y2="23"/><line x1="8" y1="23" x2="16" y2="23"/></svg>, title: "模拟面试", desc: "AI 面试官根据你的回答追问，通过摄像头观察你的表现", tag: "求职" },
+              { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"/><path d="M8 10h8"/><path d="M8 14h4"/></svg>, title: "辩论对手", desc: "AI 反驳你的观点，锻炼你的逻辑思维和表达能力", tag: "思维" },
+              { icon: <svg width={16} height={16} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round"><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>, title: "同声翻译", desc: "实时识别画面中的外语文字并语音翻译，口语化输出", tag: "工具" },
             ].map((s) => (
               <div className="lp-scene-row lp-fade-in" key={s.title}>
                 <div className="lp-scene-row__icon">{s.icon}</div>
diff --git a/frontend/src/components/SessionSidebar/index.tsx b/frontend/src/components/SessionSidebar/index.tsx
index 74de42d..560b1a9 100644
--- a/frontend/src/components/SessionSidebar/index.tsx
+++ b/frontend/src/components/SessionSidebar/index.tsx
@@ -187,7 +187,7 @@ export function SessionSidebar({
                         <>
                           {/* 视频标记图标 */}
                           {session.messageCount > 5 && (
-                            <span className="sidebar__item-icon" title={t("sidebar.video")}>📹</span>
+                            <span className="sidebar__item-icon" title={t("sidebar.video")}><svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><polygon points="23 7 16 12 23 17 23 7"/><rect x="1" y="5" width="15" height="14" rx="2" ry="2"/></svg></span>
                           )}
                           <div className="sidebar__item-content">
                             <div className="sidebar__item-title">{session.title}</div>
@@ -207,7 +207,7 @@ export function SessionSidebar({
                               }}
                               title={t("sidebar.rename")}
                             >
-                              ✏
+                              <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7"/><path d="M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z"/></svg>
                             </button>
                             <button
                               className="sidebar__action-btn sidebar__action-btn--danger"
@@ -217,7 +217,7 @@ export function SessionSidebar({
                               }}
                               title={t("sidebar.delete")}
                             >
-                              🗑
+                              <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><polyline points="3 6 5 6 21 6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/></svg>
                             </button>
                           </div>
                         </>
diff --git a/frontend/src/lib/i18n/zh-CN.ts b/frontend/src/lib/i18n/zh-CN.ts
index fd60598..2a40cea 100644
--- a/frontend/src/lib/i18n/zh-CN.ts
+++ b/frontend/src/lib/i18n/zh-CN.ts
@@ -60,8 +60,8 @@ export const zhCN: TranslationMap = {
 
   // Controls
   "controls.connecting": "连接中...",
-  "controls.start": "🎙️ 开始对话",
-  "controls.startVideo": "🎙️ 开始视频通话",
+  "controls.start": "开始对话",
+  "controls.startVideo": "开始视频通话",
   "controls.cameraOff": "关闭摄像头",
   "controls.cameraOn": "开启摄像头",
   "controls.micOff": "关闭麦克风",
@@ -70,7 +70,7 @@ export const zhCN: TranslationMap = {
   "controls.stop": "结束对话",
   "controls.stopVideo": "结束视频",
   "controls.endSession": "结束会话",
-  "controls.resumeVideo": "📹 重新开始视频",
+  "controls.resumeVideo": "重新开始视频",
 
   // Chat panel
   "chat.title": "对话",
diff --git a/frontend/src/lib/scenarioIcons.tsx b/frontend/src/lib/scenarioIcons.tsx
new file mode 100644
index 0000000..b7d830f
--- /dev/null
+++ b/frontend/src/lib/scenarioIcons.tsx
@@ -0,0 +1,124 @@
+// ============================================================
+// scenarioIcons — 自建情景 SVG 图标集（Feather-style）
+// 职责：为 CreateScenarioModal / EditScenarioModal 提供图标选项
+//       为情景芯片条渲染自建情景的 SVG 图标
+// ============================================================
+
+import React from "react";
+
+const P = { viewBox: "0 0 24 24", fill: "none" as const, stroke: "currentColor", strokeWidth: 2, strokeLinecap: "round" as const, strokeLinejoin: "round" as const };
+
+export interface ScenarioIconDef {
+  id: string;
+  label: string;
+  render: (size?: number) => React.ReactElement;
+}
+
+/** 自建情景可选的 Feather SVG 图标集 */
+export const SCENARIO_ICON_SET: ScenarioIconDef[] = [
+  {
+    id: "sparkles", label: "通用助手",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M12 3l1.5 4.5L18 9l-4.5 1.5L12 15l-1.5-4.5L6 9l4.5-1.5L12 3z"/><path d="M18 14l.75 2.25L21 17l-2.25.75L18 20l-.75-2.25L15 17l2.25-.75L18 14z"/><path d="M5 17l.5 1.5L7 19l-1.5.5L5 21l-.5-1.5L3 19l1.5-.5L5 17z"/></svg>),
+  },
+  {
+    id: "theater", label: "角色扮演",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><circle cx="12" cy="12" r="10"/><path d="M8 14s1.5 2 4 2 4-2 4-2"/><line x1="9" y1="9" x2="9.01" y2="9"/><line x1="15" y1="9" x2="15.01" y2="9"/></svg>),
+  },
+  {
+    id: "palette", label: "创意设计",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><circle cx="13.5" cy="6.5" r=".5"/><circle cx="17.5" cy="10.5" r=".5"/><circle cx="8.5" cy="7.5" r=".5"/><circle cx="6.5" cy="12.5" r=".5"/><path d="M12 2C6.5 2 2 6.5 2 12s4.5 10 10 10c.93 0 1.5-.67 1.5-1.5 0-.39-.15-.74-.39-1.04-.23-.29-.38-.63-.38-1.04 0-.83.67-1.5 1.5-1.5H16c3.31 0 6-2.69 6-6 0-5.5-4.5-9.92-10-9.92z"/></svg>),
+  },
+  {
+    id: "target", label: "目标导向",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><circle cx="12" cy="12" r="10"/><circle cx="12" cy="12" r="6"/><circle cx="12" cy="12" r="2"/></svg>),
+  },
+  {
+    id: "film", label: "影视娱乐",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg>),
+  },
+  {
+    id: "book-open", label: "阅读学习",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M2 3h6a4 4 0 0 1 4 4v14a3 3 0 0 0-3-3H2z"/><path d="M22 3h-6a4 4 0 0 0-4 4v14a3 3 0 0 1 3-3h7z"/></svg>),
+  },
+  {
+    id: "book", label: "教程指南",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M4 19.5A2.5 2.5 0 0 1 6.5 17H20"/><path d="M6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5v-15A2.5 2.5 0 0 1 6.5 2z"/></svg>),
+  },
+  {
+    id: "edit", label: "写作编辑",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7"/><path d="M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z"/></svg>),
+  },
+  {
+    id: "clipboard", label: "任务管理",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2"/><rect x="8" y="2" width="8" height="4" rx="1" ry="1"/></svg>),
+  },
+  {
+    id: "map-pin", label: "导航定位",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M21 10c0 7-9 13-9 13s-9-6-9-13a9 9 0 0 1 18 0z"/><circle cx="12" cy="10" r="3"/></svg>),
+  },
+  {
+    id: "search", label: "搜索探索",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><circle cx="11" cy="11" r="8"/><line x1="21" y1="21" x2="16.65" y2="16.65"/></svg>),
+  },
+  {
+    id: "lightbulb", label: "灵感启发",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><line x1="9" y1="18" x2="15" y2="18"/><line x1="10" y1="22" x2="14" y2="22"/><path d="M15.09 14c.18-.98.65-1.74 1.41-2.5A4.65 4.65 0 0 0 18 8 6 6 0 0 0 6 8c0 1 .23 2.23 1.5 3.5A4.61 4.61 0 0 1 8.91 14"/></svg>),
+  },
+  {
+    id: "briefcase", label: "商务办公",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><rect x="2" y="7" width="20" height="14" rx="2" ry="2"/><path d="M16 21V5a2 2 0 0 0-2-2h-4a2 2 0 0 0-2 2v16"/></svg>),
+  },
+  {
+    id: "code", label: "编程开发",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><polyline points="16 18 22 12 16 6"/><polyline points="8 6 2 12 8 18"/></svg>),
+  },
+  {
+    id: "graduation-cap", label: "教育培训",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M22 10v6M2 10l10-5 10 5-10 5z"/><path d="M6 12v5c3 3 9 3 12 0v-5"/></svg>),
+  },
+  {
+    id: "mic", label: "语音对话",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M12 1a3 3 0 0 0-3 3v8a3 3 0 0 0 6 0V4a3 3 0 0 0-3-3z"/><path d="M19 10v2a7 7 0 0 1-14 0v-2"/><line x1="12" y1="19" x2="12" y2="23"/><line x1="8" y1="23" x2="16" y2="23"/></svg>),
+  },
+  {
+    id: "music", label: "音乐艺术",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M9 18V5l12-2v13"/><circle cx="6" cy="18" r="3"/><circle cx="18" cy="16" r="3"/></svg>),
+  },
+  {
+    id: "globe", label: "翻译跨语言",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><circle cx="12" cy="12" r="10"/><line x1="2" y1="12" x2="22" y2="12"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>),
+  },
+  {
+    id: "heart", label: "健康关怀",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z"/></svg>),
+  },
+  {
+    id: "shield", label: "安全防护",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z"/></svg>),
+  },
+  {
+    id: "zap", label: "快速高效",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><polygon points="13 2 3 14 12 14 11 22 21 10 12 10 13 2"/></svg>),
+  },
+  {
+    id: "coffee", label: "休闲聊天",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M18 8h1a4 4 0 0 1 0 8h-1"/><path d="M2 8h16v9a4 4 0 0 1-4 4H6a4 4 0 0 1-4-4V8z"/><line x1="6" y1="1" x2="6" y2="4"/><line x1="10" y1="1" x2="10" y2="4"/><line x1="14" y1="1" x2="14" y2="4"/></svg>),
+  },
+  {
+    id: "tool", label: "工具助手",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M14.7 6.3a1 1 0 0 0 0 1.4l1.6 1.6a1 1 0 0 0 1.4 0l3.77-3.77a6 6 0 0 1-7.94 7.94l-6.91 6.91a2.12 2.12 0 0 1-3-3l6.91-6.91a6 6 0 0 1 7.94-7.94l-3.76 3.76z"/></svg>),
+  },
+  {
+    id: "message-circle", label: "对话问答",
+    render: (s = 16) => (<svg width={s} height={s} {...P}><path d="M21 11.5a8.38 8.38 0 0 1-.9 3.8 8.5 8.5 0 0 1-7.6 4.7 8.38 8.38 0 0 1-3.8-.9L3 21l1.9-5.7a8.38 8.38 0 0 1-.9-3.8 8.5 8.5 0 0 1 4.7-7.6 8.38 8.38 0 0 1 3.8-.9h.5a8.48 8.48 0 0 1 8 8v.5z"/></svg>),
+  },
+];
+
+/** 根据图标 ID 渲染 SVG，找不到返回 null */
+export function renderScenarioIconById(iconId: string, size = 14): React.ReactElement | null {
+  const def = SCENARIO_ICON_SET.find((d) => d.id === iconId);
+  return def ? def.render(size) : null;
+}
+
+/** 默认图标 ID */
+export const DEFAULT_SCENARIO_ICON_ID = "sparkles";