修改SeedList-Header

Change-Id: I95abe9b9c674c962e51b7c528d620a33f89b0719
diff --git a/src/pages/SeedList/SeedList.jsx b/src/pages/SeedList/SeedList.jsx
index 8ffecb3..ce5908b 100644
--- a/src/pages/SeedList/SeedList.jsx
+++ b/src/pages/SeedList/SeedList.jsx
@@ -246,6 +246,7 @@
 import axios from 'axios';
 import logo from '../../assets/logo.png';
 import Recommend from './Recommend/Recommend';
+import Header from '../../components/Header';  // 引入 Header 组件
 import './SeedList.css';
 
 const API_BASE = process.env.REACT_APP_API_BASE;
@@ -399,25 +400,8 @@
     };
 
     return (
-        <div className="friend-moments">
-            <header className="header">
-                <div className="logo-and-name">
-                    <img src={logo} alt="网站logo" className="logo" />
-                    <span className="site-name">Echo</span>
-                </div>
-                <div className="user-and-message">
-                    <img src="user-avatar.png" alt="用户头像" className="user-avatar" />
-                    <span className="message-center">消息</span>
-                </div>
-            </header>
-
-            <nav className="nav">
-                <Link to="/friend-moments" className="nav-item">好友动态</Link>
-                <Link to="/forum" className="nav-item">论坛</Link>
-                <Link to="/interest-groups" className="nav-item">兴趣小组</Link>
-                <Link to="/seed-list" className="nav-item active">种子列表</Link>
-                <Link to="/publish-seed" className="nav-item">发布种子</Link>
-            </nav>
+        <div className="main-page">
+            <Header /> {/* 引用 Header 组件 */}
 
             <div className="controls">
                 <input