body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: #f7fafc;
        }

        .header {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: white;
            padding: 3rem 0;
            text-align: center;
            margin-bottom: 2rem;
        }

        .header h1 {
            margin: 0 0 1rem 0;
            font-size: 2.5rem;
            font-weight: 300;
        }

        .header p {
            margin: 0;
            font-size: 1.25rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto;
        }

        .aiab-stats {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-top: 2rem;
            flex-wrap: wrap;
        }

        .aiab-stat {
            text-align: center;
            padding: 0 1rem;
        }

        .stat-number {
            display: block;
            font-size: 2rem;
            font-weight: 600;
        }

        .aiab-stat-label {
            font-size: 0.875rem;
            opacity: 0.8;
        }

        .section {
            background: white;
            margin: 2rem 0;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

        .section-title {
            font-size: 1.75rem;
            margin: 0 0 1rem 0;
            color: #2d3748;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .section-subtitle {
            color: #718096;
            margin-bottom: 2rem;
        }

        .aiab-demo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin: 2rem 0;
        }

        .demo-card {
            padding: 1.5rem;
            border: 1px solid #e2e8f0;
            border-radius: 8px;
            text-align: center;
            background: white;
            transition: all 0.2s;
        }

        .demo-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }

        .demo-card h4 {
            margin: 0 0 0.5rem 0;
            color: #2d3748;
        }

        .demo-card p {
            color: #718096;
            font-size: 0.875rem;
            margin-bottom: 1rem;
        }

        .code-block {
            background: #2d3748;
            color: #e2e8f0;
            padding: 1rem;
            border-radius: 6px;
            font-family: 'Monaco', 'Consolas', monospace;
            font-size: 0.875rem;
            overflow-x: auto;
            margin: 1rem 0;
        }

        .keyword { color: #ff7979; }
        .string { color: #00cec9; }
        .comment { color: #636e72; }

        .interactive-demo {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            padding: 3rem;
            border-radius: 12px;
            text-align: center;
            color: white;
            margin: 2rem 0;
        }

        .interactive-demo h3 {
            margin-top: 0;
            font-size: 1.5rem;
        }

        .button-group {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            margin: 2rem 0;
        }

        /* Product Modal Styles */
        .product-modal-content {
            display: flex;
            gap: 2rem;
            align-items: start;
        }

        .product-modal-image {
            flex: 1;
            min-width: 200px;
            height: 300px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 3rem;
        }

        .product-modal-info {
            flex: 1;
        }

        .product-modal-price {
            font-size: 2rem;
            color: #10b981;
            font-weight: 600;
            margin: 1rem 0;
        }

        .product-modal-description {
            color: #4a5568;
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }

        .product-options {
            margin: 1.5rem 0;
        }

        .option-group {
            margin-bottom: 1rem;
        }

        .option-label {
            font-weight: 600;
            margin-bottom: 0.5rem;
            display: block;
            color: #2d3748;
        }

        .option-buttons {
            display: flex;
            gap: 0.5rem;
        }

        .option-btn {
            padding: 0.5rem 1rem;
            border: 2px solid #e2e8f0;
            background: white;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.2s;
        }

        .option-btn:hover {
            border-color: var(--color-primary);
        }

        .option-btn.selected {
            background: var(--color-primary);
            color: white;
            border-color: var(--color-primary);
        }

        /* Checkout Steps */
        .checkout-steps {
            display: flex;
            justify-content: space-between;
            margin-bottom: 2rem;
        }

        .step {
            flex: 1;
            text-align: center;
            position: relative;
        }

        .step-number {
            width: 40px;
            height: 40px;
            background: #e2e8f0;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .step.aiab-active .step-number {
            background: var(--color-primary);
            color: white;
        }

        .step.completed .step-number {
            background: #10b981;
            color: white;
        }

        .step-title {
            font-size: 0.875rem;
            color: #718096;
        }

        .step.aiab-active .step-title {
            color: #2d3748;
            font-weight: 600;
        }

        /* Form Styles */
        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
        }

        .aiab-form-group {
            margin-bottom: 1rem;
        }

        .form-label {
            display: block;
            margin-bottom: 0.25rem;
            color: #4a5568;
            font-size: 0.875rem;
            font-weight: 500;
        }

        .form-input {
            width: 100%;
            padding: 0.5rem;
            border: 1px solid #e2e8f0;
            border-radius: 6px;
            font-size: 1rem;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--color-primary);
        }

        /* Animation Demo */
        .animation-options {
            display: flex;
            gap: 1rem;
            justify-content: center;
            margin: 1rem 0;
        }

        .animation-btn {
            padding: 0.5rem 1rem;
            border: 2px solid #e2e8f0;
            background: white;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.2s;
        }

        .animation-btn:hover {
            border-color: var(--color-primary);
        }

        .animation-btn.aiab-active {
            background: var(--color-primary);
            color: white;
            border-color: var(--color-primary);
        }

        /* Mobile Demo */
        .mobile-demo {
            background: #1a1a1a;
            border-radius: 24px;
            padding: 1rem;
            max-width: 375px;
            margin: 2rem auto;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }

        .mobile-screen {
            background: white;
            border-radius: 16px;
            padding: 1rem;
            min-height: 400px;
        }

        @media (max-width: 768px) {
            .header h1 {
                font-size: 1.75rem;
            }

            .product-modal-content {
                flex-direction: column;
            }

            .aiab-demo-grid {
                grid-template-columns: 1fr;
            }

            .section {
                margin: 1rem;
                padding: 1rem;
            }

            .checkout-steps {
                font-size: 0.75rem;
            }

            .step-number {
                width: 30px;
                height: 30px;
                font-size: 0.875rem;
            }
        }

        .feature-badge {
            display: inline-block;
            background: #f0fdf4;
            color: #10b981;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            margin: 0.25rem;
        }

        .performance-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }

        .aiab-stat-card {
            background: #f8fafc;
            padding: 1rem;
            border-radius: 8px;
            text-align: center;
        }

        .aiab-stat-value {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--color-primary);
        }

        .stat-description {
            font-size: 0.875rem;
            color: #718096;
        }