body {
      font-family: Arial, sans-serif;
      margin: 0;
      background: #f5f8fc;
      padding-top: 80px; 
    }
    .nav-header {
      background-color: white;
      padding: 8px 10px;
      box-shadow: 0 2px 5px rgba(0,0,0,0.1);
      position: fixed;
      width: 100%;
      top: 0;
      z-index: 1000;
    }

    .nav-container {
        max-width: none;
        margin: 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-left: 0;
        padding-right: 30px;
    }

    .main-nav {
      display: flex;
      gap: 5px;
      align-items: center;
    }

    .nav-item {
      position: relative;
      padding: 6px 12px;
      font-size: 14px;
      color: #333;
      text-decoration: none;
      border-radius: 6px;
      transition: background-color 0.3s, color 0.3s;
    }

    .nav-item:hover {
      text-decoration: underline;
    }

    .nav-item.active {
      background-color: #f6f0ff;
      color: #7A40FB;
      font-weight: bold;
      border-radius: 8px;
      padding: 6px 12px;
    }

    .nav-buttons {
      display: flex;
      gap: 15px;
      align-items: center;
    }

    .nav-button {
      padding: 8px 15px;
      background-color: transparent;
      color: #000;
      border: none;
      cursor: pointer;
      text-decoration: none;
      font-size: 14px;
    }

    .nav-button:hover {
      text-decoration: underline;
      background-color: transparent;
    }

    .user-stats {
      display: flex;
      flex-direction: column;
      font-size: 14px;
      color: #333;
    }

    .user-dropdown {
      position: relative;
      cursor: pointer;
    }

    .user-info-display {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 6px 10px;
      border-radius: 6px;
    }

    .dropdown-arrow {
      font-size: 12px;
    }

    .dropdown-menu {
      position: absolute;
      top: 40px;
      right: 0;
      background-color: white;
      box-shadow: 0 2px 6px rgba(0,0,0,0.1);
      border-radius: 6px;
      padding: 6px 0;
      width: 120px;
      display: none;
      z-index: 999;
    }

    .dropdown-item {
      padding: 5px 0px; 
      font-size: 14px;
      color: #333;
      text-align: center;
      cursor: pointer;
    }

    .dropdown-item:hover {
      background-color: #f5f5f5;
    }
    .logo {
        font-size: 1.5em;
        font-weight: bold;
        text-decoration: none;
        background: linear-gradient(90deg, #b23da4, #6262e4);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .upload-area {
      border: 2px dashed #ccc;
      border-radius: 12px;
      padding: 40px 20px;
      margin: 2em auto;
      width: 90%;
      max-width: 600px;
      background-color: #f9f9f9;
      cursor: pointer;
      transition: border-color 0.3s, background-color 0.3s;
    }

    .upload-area:hover {
      border-color: #4CAF50;
      background-color: #f0fff0;
    }
    .upload-btn {
      background-color: #4cafaf;
      color: white;
      padding: 0.6em 1.2em;
      font-size: 1em;
      border: none;
      border-radius: 6px;
      cursor: pointer;
    }
    .placeholder {
      text-align: center;
      padding: 100px 20px;
      color: #555;
    }
    .placeholder img {
      width: 60px;
      margin-bottom: 1em;
    }
    .section {
      background: #fff;
      border-radius: 12px;
      padding: 1em 1.5em;
      margin: 2em auto;
      width: 90%;
      max-width: 800px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    }
    .section h3 {
      border-bottom: 1px solid #eee;
      padding-bottom: 0.5em;
    }
    .field {
      margin: 0.5em 0;
    }
    .field span {
      font-weight: bold;
    }
    .edit-btn {
      float: right;
      color: #2563eb;
      cursor: pointer;
      font-size: 0.9em;
    }
    textarea, input {
      width: 100%;
      padding: 0.4em;
      margin-top: 0.3em;
      border: 1px solid #ccc;
      border-radius: 6px;
    }
    .save-btn {
      background: #6fb672;
      color: white;
      font-size: 1em;           /* 缩小字体 */
      padding: 0.4em 1em;       /* 缩小内边距 */
      border: 2px solid #75ac76;
      border-radius: 6px;       /* 略微减小圆角 */
      cursor: pointer;
      box-shadow: 0 0 8px rgba(76, 175, 80, 0.3); /* 缩小阴影 */
      animation: glow 1.5s infinite alternate;
    }

    .delete-btn {
      background: #ffcccc;
      color: #b30000;
      font-size: 1em;
      padding: 0.4em 1em;
      border: 2px solid #ff9999;
      border-radius: 6px;
      cursor: pointer;
      box-shadow: 0 0 6px rgba(255, 0, 0, 0.2);
    }
    .save-btn:hover {
      background: #43df55;
    }
    .delete-btn:hover {
      background: #ffb3b3;
    }
    #overlay {
      display: none;
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.4);
      z-index: 9999;
      justify-content: center;
      align-items: center;
      color: white;
      font-size: 1.4em;
    }
    @keyframes glow {
      from {
        box-shadow: 0 0 10px rgba(76, 175, 80, 0.4);
      }
      to {
        box-shadow: 0 0 20px rgba(76, 175, 80, 0.8);
      }
    }
    /* PC端默认隐藏菜单*/
    .hamburger-icon {
        display: none; 
    }
    /*移动端适配，媒体查询*/
    @media (max-width: 730px) {
        .main-nav,
        #userStats {
            display: none !important;
        }

        .avatar-icon {
            display: none;
        }

        .hamburger-icon {
            display: inline-block;
            width: 24px;
            height: 24px;
            cursor: pointer;
        }
    }