.wac-onboarding-container {
            max-width: 800px;
            margin: 40px auto;
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            overflow: hidden;
            font-family: "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
        }
        
        .wac-header {
            background: linear-gradient(135deg, #ff6900 0%, #fcb900 100%);
            color: white;
            padding: 40px 30px;
            text-align: center;
        }
        
        .wac-header h1 {
            margin: 0 0 10px 0;
            font-size: 32px;
            font-weight: 600;
        }
        
        .wac-header .subtitle {
            font-size: 18px;
            opacity: 0.9;
        }
        
        .wac-content {
            padding: 40px 30px;
        }
        
        .wac-benefits {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 30px;
            margin-bottom: 30px;
        }
        
        .wac-benefits h3 {
            color: #ff6900;
            margin-top: 0;
            font-size: 24px;
            margin-bottom: 20px;
        }
        
        .benefit-list {
            list-style: none;
            padding: 0;
        }
        
        .benefit-list li {
            padding: 12px 0;
            border-bottom: 1px solid #eee;
            position: relative;
            padding-left: 30px;
            font-size: 16px;
            line-height: 1.6;
        }
        
        .benefit-list li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #28a745;
            font-weight: bold;
            font-size: 18px;
        }
        
        .benefit-list li:last-child {
            border-bottom: none;
        }
        
        .wac-form {
            background: #fff;
            border: 2px solid #f1f3f4;
            border-radius: 8px;
            padding: 30px;
            margin-bottom: 20px;
        }
        
        .form-group {
            margin-bottom: 25px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #333;
            font-size: 16px;
        }
        
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e1e5e9;
            border-radius: 6px;
            font-size: 16px;
            transition: border-color 0.3s ease;
            box-sizing: border-box;
        }
        
        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: #ff6900;
            box-shadow: 0 0 0 3px rgba(255, 105, 0, 0.1);
        }
        
        .form-row {
            display: flex;
            gap: 20px;
        }
        
        .form-row .form-group {
            flex: 1;
        }
        
        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .checkbox-group input[type="checkbox"] {
            width: auto;
            margin: 0;
        }
        
        .required {
            color: #e74c3c;
        }
        
        .helper-text {
            font-size: 14px;
            color: #666;
            margin-top: 5px;
        }
        
        .connect-button {
            background: linear-gradient(135deg, #ff6900 0%, #fcb900 100%);
            color: white;
            border: none;
            padding: 16px 40px;
            font-size: 18px;
            font-weight: 600;
            border-radius: 8px;
            cursor: pointer;
            width: 100%;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            margin-top: 10px;
        }
        
        .connect-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 105, 0, 0.3);
        }
        
        .connect-button:disabled {
            background: #ccc;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        
        .success-message {
            background: #d4edda;
            border: 1px solid #c3e6cb;
            color: #155724;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 20px;
            text-align: center;
        }
        
        .success-message h3 {
            margin-top: 0;
            color: #155724;
        }
        
        .error-message {
            background: #f8d7da;
            border: 1px solid #f5c6cb;
            color: #721c24;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 20px;
        }
        
        .loading-spinner {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid #ffffff;
            border-radius: 50%;
            border-top-color: transparent;
            animation: spin 1s ease-in-out infinite;
            margin-right: 10px;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        @media (max-width: 768px) {
            .wac-onboarding-container {
                margin: 20px;
                border-radius: 8px;
            }
            
            .wac-header {
                padding: 30px 20px;
            }
            
            .wac-header h1 {
                font-size: 28px;
            }
            
            .wac-content {
                padding: 30px 20px;
            }
            
            .form-row {
                flex-direction: column;
                gap: 0;
            }
        }