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

        body {
            background-color: #f8f9fa;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            color: #333;
            padding: 20px;
            flex-direction: column;
        }

        /* Logo 容器 */
        .logo-container {
            text-align: center;
            margin-bottom: 30px;
            padding: 0 20px;
            width: 100%;
            max-width: 500px;
        }

        .logo-container img {
            max-width: 220px;
            width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
            transition: transform 0.5s ease, box-shadow 0.5s ease;
        }

        .logo-container img:hover {
            transform: scale(1.05) rotate(1deg);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
        }

        /* 登录容器 */
        .login-container {
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            width: 100%;
            max-width: 500px;
            padding: 50px 60px;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
            border: 1px solid #eee;
            transition: all 0.4s ease;
            position: relative;
        }

        .login-container:hover {
            box-shadow: 0 15px 50px rgba(0, 0, 0, 0.08);
            transform: translateY(-3px);
        }

        /* 登录标题 */
        .login-title {
            text-align: center;
            margin-bottom: 12px;
            font-size: 32px;
            font-weight: 700;
            color: #222;
            letter-spacing: -0.5px;
        }

        .login-desc {
            text-align: center;
            margin-bottom: 40px;
            font-size: 16px;
            color: #666;
            line-height: 1.6;
        }

        /* 表单组样式 */
        .form-group {
            margin-bottom: 30px;
            position: relative;
            transition: transform 0.3s ease;
        }

        /* 输入框样式 */
        .form-control {
            width: 100%;
            padding: 18px 20px 18px 50px;
            border: 2px solid #e0e0e0;
            border-radius: 12px;
            font-size: 17px;
            color: #333;
            background: transparent;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: #409eff;
            box-shadow: 0 0 0 4px rgba(64, 158, 255, 0.1);
        }

        .form-control::placeholder {
            color: #999;
            font-size: 16px;
        }

        /* 输入框图标 */
        .form-group .fa {
            position: absolute;
            left: 20px;
            top: 50%;
            transform: translateY(-50%);
            color: #999;
            font-size: 18px;
        }

        /* 记住密码区域 */
        .remember-me {
            font-size: 15px;
            color: #555;
            margin: 10px 0 30px 0;
            display: flex;
            align-items: center;
            cursor: pointer;
        }

        .remember-me input[type="checkbox"] {
            margin-right: 10px;
            width: 18px;
            height: 18px;
            accent-color: #409eff;
            cursor: pointer;
        }

        /* 登录按钮 */
        .form-submit {
            width: 100%;
            padding: 18px 0;
            background-color: #409eff;
            color: #ffffff;
            border: none;
            border-radius: 12px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-bottom: 30px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .form-submit:hover {
            background-color: #66b1ff;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(64, 158, 255, 0.2);
        }

        .form-submit:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(64, 158, 255, 0.15);
        }

        /* 禁用状态的按钮样式 */
        .form-submit:disabled {
            background-color: #a0cfff !important;
            cursor: not-allowed !important;
            transform: none !important;
            box-shadow: none !important;
        }

        /* 辅助链接 */
        .helper-links {
            text-align: center;
            margin-top: 10px;
        }

        .helper-links .btn {
            padding: 10px 25px;
            border-radius: 10px;
            margin: 0 10px;
            font-size: 16px;
            font-weight: 500;
            transition: all 0.3s ease;
            color: #409eff;
            background: transparent;
            border: 1px solid #409eff;
            text-decoration: none;
            display: inline-block;
        }

        .helper-links .btn:hover {
            background-color: #409eff;
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(64, 158, 255, 0.15);
            text-decoration: none;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .login-container {
                padding: 40px 30px;
                max-width: 100%;
                margin: 0 15px;
            }
            .login-title {
                font-size: 28px;
            }
            .logo-container img {
                max-width: 180px;
            }
        }

        @media (max-width: 480px) {
            .login-container {
                padding: 30px 20px;
            }
            .helper-links .btn {
                display: block;
                width: 100%;
                margin: 10px 0 !important;
            }
            .form-control {
                padding: 15px 18px 15px 45px;
                font-size: 16px;
            }
            .form-submit {
                padding: 15px 0;
                font-size: 17px;
            }
        }