.brand-features {
            list-style: none;
            z-index: 1;
        }
        
        .brand-features li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            font-size: 14px;
        }
        
        .brand-features li::before {
            content: '';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            content: '\f00c';
            margin-right: 10px;
            font-weight: bold;
            color: #4ade80;
        }
        
        /* 右侧登录表单区域 */
        .login-section {
            padding: 60px 40px;
            display: flex;
            flex-direction: column;
        }
        
        .login-header {
            margin-bottom: 40px;
        }
        
        .login-header h2 {
            font-size: 28px;
            font-weight: 600;
            color: #1e293b;
            margin-bottom: 8px;
        }
        
        .login-header p {
            font-size: 14px;
            color: #64748b;
        }
        
        /* 表单样式 */
        .login-form {
            flex: 1;
        }
        
        .form-group {
            margin-bottom: 24px;
            position: relative;
        }
        
        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: #475569;
            margin-bottom: 8px;
        }
        
        .form-input {
            width: 100%;
            padding: 16px 20px;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 16px;
            transition: all 0.3s ease;
            background: #f8fafc;
        }
        
        .form-input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
            background: white;
        }
        
        .password-container {
            position: relative;
        }
        
        .toggle-password {
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            cursor: pointer;
            color: #94a3b8;
            font-size: 16px;
            padding: 4px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        
        .toggle-password:hover {
            background: #f1f5f9;
            color: #64748b;
        }
        
        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 32px;
        }
        
        .remember-me {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .remember-me input[type="checkbox"] {
            width: 18px;
            height: 18px;
            accent-color: #667eea;
        }
        
        .remember-me label {
            font-size: 14px;
            color: #64748b;
            cursor: pointer;
        }
        
        /* 登录按钮 */
        .login-button {
            width: 100%;
            padding: 16px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .login-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.6s ease;
        }
        
        .login-button:hover::before {
            left: 100%;
        }
        
        .login-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
        }
        
        .login-button:active {
            transform: translateY(0);
        }
        
        /* 错误信息 */
        .error-message {
            background: #fef2f2;
            border: 2px solid #fecaca;
            color: #dc2626;
            padding: 12px 16px;
            border-radius: 8px;
            margin-bottom: 24px;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            animation: shake 0.5s ease;
        }