diff --git a/app/composables/useMeilisearch.ts b/app/composables/useMeilisearch.ts
index 05ffae6..ebf62fe 100644
--- a/app/composables/useMeilisearch.ts
+++ b/app/composables/useMeilisearch.ts
@@ -37,7 +37,7 @@ export const useMeilisearch = () => {
 
     const host = runtimeConfig.public?.meili?.host;
     if (!host) {
-      console.warn('Meilisearch host is not configured.');
+      logger.warn('Meilisearch host is not configured.');
       return null;
     }
     const apiKey = runtimeConfig.public?.meili?.searchKey;
@@ -76,7 +76,7 @@ export const useMeilisearch = () => {
 
     const activeIndexes = indexes.value as K[];
     if (!activeIndexes.length) {
-      console.warn('No Meilisearch indexes configured.');
+      logger.warn('No Meilisearch indexes configured.');
       return [];
     }
     const rawIndexMap = Object.fromEntries(
@@ -105,7 +105,7 @@ export const useMeilisearch = () => {
           result.status === 'rejected'
       )
       .forEach((result) => {
-        console.error('Meilisearch query failed', result.reason);
+        logger.error('Meilisearch query failed', result.reason);
       });
 
     return settled
diff --git a/app/pages/about/index.vue b/app/pages/about/index.vue
index afd6b69..64dd05f 100644
--- a/app/pages/about/index.vue
+++ b/app/pages/about/index.vue
@@ -38,7 +38,7 @@
 
   watch(error, (value) => {
     if (value) {
-      console.error('数据获取失败: ', value);
+      logger.error('数据获取失败: ', value);
     }
   });
 
diff --git a/app/pages/index.vue b/app/pages/index.vue
index d6556bc..f2eb413 100644
--- a/app/pages/index.vue
+++ b/app/pages/index.vue
@@ -23,7 +23,7 @@
 
   watch(error, (value) => {
     if (value) {
-      console.error('数据获取失败: ', value);
+      logger.error('数据获取失败: ', value);
     }
   });
 
diff --git a/app/pages/products/[...slug].vue b/app/pages/products/[...slug].vue
index 0ecfd3a..cca08a3 100644
--- a/app/pages/products/[...slug].vue
+++ b/app/pages/products/[...slug].vue
@@ -55,7 +55,7 @@
 
   watch(error, (value) => {
     if (value) {
-      console.error('数据获取失败: ', value);
+      logger.error('数据获取失败: ', value);
     }
   });
 
diff --git a/app/pages/products/index.vue b/app/pages/products/index.vue
index bb5aa99..28babe7 100644
--- a/app/pages/products/index.vue
+++ b/app/pages/products/index.vue
@@ -83,7 +83,7 @@
 
   watch(error, (value) => {
     if (value) {
-      console.error('数据获取失败: ', value);
+      logger.error('数据获取失败: ', value);
     }
   });
 
diff --git a/app/pages/search.vue b/app/pages/search.vue
index f824f41..c29ac62 100644
--- a/app/pages/search.vue
+++ b/app/pages/search.vue
@@ -86,7 +86,7 @@
 
   watch(error, (value) => {
     if (value) {
-      console.error('数据获取失败: ', value);
+      logger.error('数据获取失败: ', value);
     }
   });
 
diff --git a/app/pages/solutions/[...slug].vue b/app/pages/solutions/[...slug].vue
index cab1949..e3ec505 100644
--- a/app/pages/solutions/[...slug].vue
+++ b/app/pages/solutions/[...slug].vue
@@ -46,7 +46,7 @@
 
   watch(error, (value) => {
     if (value) {
-      console.error('数据获取失败: ', value);
+      logger.error('数据获取失败: ', value);
     }
   });
 
diff --git a/app/pages/solutions/index.vue b/app/pages/solutions/index.vue
index f060d43..24f293d 100644
--- a/app/pages/solutions/index.vue
+++ b/app/pages/solutions/index.vue
@@ -83,7 +83,7 @@
 
   watch(error, (value) => {
     if (value) {
-      console.error('数据获取失败: ', value);
+      logger.error('数据获取失败: ', value);
     }
   });
 
diff --git a/app/pages/support/contact-us.vue b/app/pages/support/contact-us.vue
index 1868f63..d6d09e2 100644
--- a/app/pages/support/contact-us.vue
+++ b/app/pages/support/contact-us.vue
@@ -28,7 +28,7 @@
 
   watch(error, (value) => {
     if (value) {
-      console.error('数据获取失败: ', value);
+      logger.error('数据获取失败: ', value);
     }
   });
 
diff --git a/app/pages/support/documents.vue b/app/pages/support/documents.vue
index e340188..e67f386 100644
--- a/app/pages/support/documents.vue
+++ b/app/pages/support/documents.vue
@@ -104,7 +104,7 @@
 
   watch(error, (value) => {
     if (value) {
-      console.error('数据获取失败: ', value);
+      logger.error('数据获取失败: ', value);
     }
   });
 
diff --git a/app/pages/support/faq.vue b/app/pages/support/faq.vue
index 2c472d8..b47e058 100644
--- a/app/pages/support/faq.vue
+++ b/app/pages/support/faq.vue
@@ -105,7 +105,7 @@
 
   watch(error, (value) => {
     if (value) {
-      console.error('数据获取失败: ', value);
+      logger.error('数据获取失败: ', value);
     }
   });
 
diff --git a/eslint.config.mjs b/eslint.config.mjs
index 410eb6a..35af3ce 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -13,6 +13,7 @@ export default withNuxt(
           },
         },
       ],
+      'no-console': 'warn',
     },
   }
 );
diff --git a/server/utils/file.ts b/server/utils/file.ts
index 5d4ae83..117d151 100644
--- a/server/utils/file.ts
+++ b/server/utils/file.ts
@@ -46,7 +46,7 @@ export async function getFileMeta(id: string): Promise<FileMeta | null> {
     };
   } catch (error) {
     if (error instanceof Error) {
-      console.error('Error fetching file metadata:', error.message);
+      logger.error('Error fetching file metadata:', error.message);
     }
     return null;
   }
diff --git a/shared/utils/logger.ts b/shared/utils/logger.ts
new file mode 100644
index 0000000..4a6dfd4
--- /dev/null
+++ b/shared/utils/logger.ts
@@ -0,0 +1,112 @@
+/* eslint-disable no-console -- console is allowed inside logger implementation */
+
+/**
+ * 日志等级枚举
+ *
+ * - `debug`  : 开发调试日志（最低）
+ * - `info`   : 普通信息输出
+ * - `warn`   : 警告信息
+ * - `error`  : 错误信息（最高级别）
+ * - `silent` : 屏蔽所有日志
+ */
+export type LogLevel = 'debug' | 'info' | 'warn' | 'error' | 'silent';
+
+/**
+ * 每个日志级别的优先级数值
+ * 数值越小，级别越低
+ */
+const levelPriority: Record<LogLevel, number> = {
+  debug: 0,
+  info: 1,
+  warn: 2,
+  error: 3,
+  silent: 4,
+};
+
+/**
+ * 检测当前运行环境应使用的日志等级：
+ *
+ * - 开发环境：默认 `debug`
+ * - 生产环境：默认 `warn`
+ * - 浏览器允许通过 `localStorage.DEBUG = 'true'` 强制开启 `debug`
+ */
+function detectInitialLevel(): LogLevel {
+  const isProduction = process.env.NODE_ENV === 'production';
+  if (import.meta.client && localStorage.getItem('DEBUG') === 'true') {
+    return 'debug';
+  }
+
+  return isProduction ? 'warn' : 'debug';
+}
+
+/**
+ * 核心日志类
+ *
+ * 提供 `debug / info / warn / error` 四个级别
+ * 并支持通过 `setLevel` 动态调整输出等级
+ *
+ * @example
+ * ```ts
+ * logger.debug('User data:', user)
+ * logger.error(new Error('Something broke'))
+ * logger.setLevel('silent')
+ * ```
+ */
+class Logger {
+  /** 当前日志等级（默认由 detectInitialLevel 判断） */
+  private level: LogLevel = detectInitialLevel();
+
+  /**
+   * 手动设置日志输出级别
+   *
+   * @param level 目标日志级别
+   *
+   * @example
+   * ```ts
+   * logger.setLevel('silent') // 全部禁用
+   * logger.setLevel('debug')  // 强制打印全部日志
+   * ```
+   */
+  setLevel(newLevel: LogLevel) {
+    this.level = newLevel;
+  }
+
+  /**
+   * 判断当前等级是否允许输出指定日志
+   */
+  private canLog(level: LogLevel): boolean {
+    return levelPriority[level] >= levelPriority[this.level];
+  }
+
+  /** 输出调试日志（开发阶段使用） */
+  debug(...args: unknown[]) {
+    if (this.canLog('debug')) console.debug('[DEBUG]', ...args);
+  }
+
+  /** 输出普通信息日志 */
+  info(...args: unknown[]) {
+    if (this.canLog('info')) console.info('[INFO]', ...args);
+  }
+
+  /** 输出警告日志 */
+  warn(...args: unknown[]) {
+    if (this.canLog('warn')) console.warn('[WARN]', ...args);
+  }
+
+  /** 输出错误日志 */
+  error(...args: unknown[]) {
+    if (this.canLog('error')) console.error('[ERROR]', ...args);
+  }
+}
+
+/**
+ * 默认导出的单例 logger
+ *
+ * @example
+ * ```ts
+ * import { logger } from '~/utils/logger'
+ *
+ * logger.info('App started')
+ * ```
+ */
+export const logger = new Logger();