/* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        }

        body {
            min-height: 100vh;
            background-color: #f8f9fa;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        /* 登录卡片 */
        .login-card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            width: 100%;
            max-width: 420px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .login-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }

        /* 头部区域 */
        .login-header {
            padding: 30px;
            text-align: center;
            border-bottom: 1px solid #f0f0f0;
        }

        /* 登录头部Logo样式定义 */
        .login-header .logo {
            width: 246px;              /* 设置Logo容器宽度 */
            height: 150px;             /* 设置Logo容器高度 */
            border-radius: 5%;         /* 设置轻微圆角 */
            margin: 0 auto 20px;       /* 上下外边距0和20px，左右auto自动居中 */
            display: flex;             /* 使用flex布局实现内部内容的对齐 */
            align-items: center;       /* 垂直居中对齐内部图片 */
            justify-content: center;   /* 水平居中对齐内部图片 */
            overflow: hidden;          /* 隐藏超出容器的图片部分 */
        }
        
        /* Logo内部图片样式 */
        .login-header .logo img {
            max-width: 100%;           /* 图片最大宽度不超过容器 */
            max-height: 100%;          /* 图片最大高度不超过容器 */
            object-fit: contain;       /* 保持图片比例，完全显示在容器内 */
        }

        .login-header h1 {
            font-size: 24px;
            font-weight: 600;
            color: #333;
            margin-bottom: 8px;
        }

        .login-header p {
            font-size: 14px;
            color: #666;
        }

        /* 表单区域 */
        .login-form {
            padding: 30px;
        }

        .form-group {
            margin-bottom: 24px;
            position: relative;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 14px;
            font-weight: 500;
            color: #555;
        }

        .form-group .input-wrapper {
            position: relative;
        }

        .form-group input {
            width: 100%;
            padding: 14px 16px 14px 45px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 16px;
            transition: all 0.3s ease;
            outline: none;
            background-color: #fff;
        }

        .form-group input:focus {
            border-color: #007bff;
            box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
        }

        .form-group .icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: #999;
            font-size: 16px;
        }

        /* 选项区域 */
        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 28px;
            font-size: 14px;
        }

        .remember-me {
            display: flex;
            align-items: center;
            cursor: pointer;
        }

        .remember-me input {
            margin-right: 8px;
            cursor: pointer;
        }

        .remember-me span {
            color: #555;
        }

        .forgot-password {
            color: #007bff;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .forgot-password:hover {
            color: #0056b3;
            text-decoration: underline;
        }

        /* 登录按钮 */
        .login-button {
            width: 100%;
            padding: 14px;
            background-color: #007bff;
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }

        .login-button:hover {
            background-color: #0056b3;
        }

        /* 分隔线 */
        .divider {
            display: flex;
            align-items: center;
            margin: 28px 0;
        }

        .divider::before,
        .divider::after {
            content: '';
            flex-grow: 1;
            height: 1px;
            background-color: #eee;
        }

        .divider span {
            padding: 0 16px;
            color: #999;
            font-size: 14px;
        }

        /* 社交媒体登录 */
        .social-login {
            display: flex;
            gap: 12px;
            margin-bottom: 28px;
        }

        .social-btn {
            flex: 1;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 8px;
            background: white;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .social-btn:hover {
            background-color: #f8f9fa;
            border-color: #ccc;
        }

        .social-btn.qq {
            color: #12b7f5;  /* QQ蓝色 */
        }

        .social-btn.weixin {
            color: #07c160;  /* 微信绿色 */
        }

        .social-btn.weibo {
            color: #e6162d;  /* 微博红色 */
        }

        /* 注册链接 */
        .register-link {
            text-align: center;
            font-size: 14px;
            color: #555;
        }

        .register-link a {
            color: #007bff;
            text-decoration: none;
            font-weight: 500;
        }

        .register-link a:hover {
            text-decoration: underline;
        }

        /* 响应式设计 */
        @media (max-width: 480px) {
            .login-header,
            .login-form {
                padding: 24px;
            }

            .social-login {
                flex-direction: column;
            }
        }
        
        /* 页脚样式 */
        .login-footer {
            background-color: #f8f9fa;
            padding: 20px 30px;
            text-align: center;
            border-top: 1px solid #e9ecef;
        }
        
        .login-footer p {
            margin: 0;
            font-size: 13px;
            color: #6c757d;
            line-height: 1.5;
        }
        
        .login-footer a {
            display: inline-block;
            padding: 6px 12px;
            margin: 0 4px;
            background-color: #fff;
            color: #0d1319;
            text-decoration: none;
            border: 1px solid #007bff;
            border-radius: 6px;
            transition: all 0.3s ease;
            font-weight: 500;
            font-size: 12px;
            padding: 8px 16px;
        }
        
        .login-footer a:hover {
            background-color: #090e14;
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 2px 8px rgba(0, 123, 255, 0.2);
        }
        
        /* 页脚响应式调整 */
        @media (max-width: 480px) {
            .login-footer {
                padding: 16px 24px;
            }
            
            .login-footer p {
                font-size: 12px;
            }
        }