/* --- 基础样式重置 --- */
        body, html {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            overflow: hidden;
            font-size: 14px;
        }

        /* --- 背景 --- */
        .background-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url(https://img.alicdn.com/tfs/TB1v0Vi3.T1gK0jSZFrXXcNCXXa-1440-962.png) no-repeat center center; /* 确保图片居中 */
            background-size: cover; /* 等比缩放并覆盖整个容器 */
            filter: blur(1px);
            z-index: -1;
            position: absolute;
        }

        .background-color{
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background-image: -webkit-linear-gradient(left, #6045FF 0%, #816BFF 100%);
            background-image: linear-gradient(90deg, #6045FF 0%, #816BFF 100%);
            opacity: .65;
        }
        
        /* --- 右上角导航 --- */
        .top-right-nav {
            position: absolute;
            top: 20px;
            right: 30px;
            z-index: 10;
        }
        .top-right-nav a {
            color: #ffffff;
            text-decoration: none;
            margin-left: 20px;
            font-size: 16px;
            padding: 8px 15px;
            border: 1px solid transparent;
            border-radius: 5px;
            transition: all 0.3s ease;
        }
        .top-right-nav a:hover {
            border-color: #ffffff;
            background-color: rgba(255, 255, 255, 0.1);
        }

        /* --- 登录框容器 --- */
        .login-wrapper {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
            height: 100%;
            color: #333;
        }

        /* --- 登录框 --- */
        .login-box {
            background-color: #ffffff;
            padding: 30px 40px;
            border-radius: 8px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            width: 400px;
            box-sizing: border-box;
            position: absolute;
            top: 100px;
        }

        /* --- Logo --- */
        .logo {
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
        }
        .logo img{
            width: 26px;
            margin-right: 5px;
        }
        .logo-text {
            font-size: 32px;
            font-weight: 600;
            color: #333;
        }

        /* --- 表单组 --- */
        .form-group {
            margin-bottom: 20px;
            text-align: left;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #333;
            font-weight: bold;
        }
        .form-group input[type="text"],
        .form-group input[type="password"] {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 4px;
            box-sizing: border-box;
        }

        /* --- 选项行：显示密码/记住密码 --- */
        .options-group {
            display: flex;
            justify-content: flex-end;
            align-items: center;
            margin-bottom: 20px;
            color: #666;
        }
        .options-group .checkbox-item {
            display: flex;
            align-items: center;
        }
        .options-group input[type="checkbox"] {
            margin-right: 5px;
        }
        
        /* --- 按钮通用样式 --- */
        .login-btn {
            width: 100%;
            padding: 12px 0;
            margin-bottom: 15px;
            border: none;
            border-radius: 5px;
            font-size: 16px;
            cursor: pointer;
            color: white;
            background-color: #1a73e8; /* 主蓝色 */
            transition: background-color 0.3s;
        }
        .login-btn:hover {
            opacity: 0.9;
        }

        /* --- 用户帮助链接 --- */
        .help-link {
            display: block;
            text-align: right;
             color: #1a73e8;
            text-decoration: none;
            font-size: 14px;
        }

         .help-link:hover {
            text-decoration:underline;
         }
        

        
        /* --- 底部版权信息 --- */
        .footer {
            position: absolute;
            bottom: 20px;
            width: 100%;
            text-align: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }
        .footer a{
          padding: 0 5px;
          font-size: 14px;
          color:#f90
        }

        /* Added for the tooltip example */
        .tooltip-buttons {
          display: flex;
          align-items: center;
          justify-content: center;
          margin-top: 25px;
          margin-bottom: 35px;
          gap: 15px;
        }

        .tooltip-buttons img {
          width: 28px;
          height: 28px;
          cursor: pointer;
          padding: 2px;
        }

        .tooltip-buttons img:hover{
          width: 32px;
          height: 32px;
          padding: 0;
        }


        /* --- [新增] 悬浮微信客服样式 --- */
        .floating-wechat {
        position: fixed;
            right: 43px;
            top: 220px;
            z-index: 1000;
            cursor: pointer;
        }

        .floating-wechat .icon-wrapper {
            width: 50px;
            height: 50px;
            background-color: #e4deff;
            border-radius: 20px;
            display: flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            transition: transform 0.2s ease-in-out;
        }
        
        .floating-wechat .icon-wrapper svg {
            width: 28px;
            height: 28px;
            fill: #07c160; /* 微信绿 */
        }

        .floating-wechat .qr-code-popup {
            position: absolute;
            bottom: 0;
            right: 65px; /* 定位在图标左侧 */
            padding: 15px;
            background-color: #fff;
            border-radius: 8px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
            text-align: center;
            
            /* 初始状态为隐藏 */
            opacity: 0;
            visibility: hidden;
            transform: scale(0.8);
            transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            transform-origin: bottom right;
        }
        
        /* 鼠标悬停时触发的效果 */
        .floating-wechat:hover .qr-code-popup {
            opacity: 1;
            visibility: visible;
            transform: scale(1);
        }
        
        .floating-wechat:hover .icon-wrapper {
            transform: scale(1.1);
        }

        .floating-wechat .qr-code-popup img {
            width: 140px;
            height: 140px;
            display: block;
        }

        .floating-wechat .qr-code-popup p {
            margin: 10px 0 0 0;
            font-size: 14px;
            color: #333;
        }

        .icon-weixin{
          font-size: 32px;
        }

        .yinliu-win{
          width: 700px;
          padding: 30px 40px;
        }

      .yinliu-win li{
      padding: 5px 0;
      }