/* 固定导航栏样式 */
    .custom-navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: #333;
      color: white;
      padding: 10px 0; /* 上下内边距保留，左右设为0 */
      z-index: 1000;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
      height: 60px;
    }
    
    /* 导航栏内容容器 */
    .navbar-content {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px; /* 左右内边距 */
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 100%;
    }
    
    .custom-navbar a {
      color: white;
      text-decoration: none;
      margin: 0 10px;
    }
    
    .custom-navbar a:hover {
      color: #ddd;
    }