:root {
            --primary: #0056b3;
            --primary-dark: #004494;
            --secondary: #6c757d;
            --success: #28a745;
            --light: #f8f9fa;
            --dark: #343a40;
            --white: #ffffff;
            --border: #dee2e6;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', sans-serif;
            line-height: 1.6;
            color: var(--dark);
            background-color: #f5f7fa;
        }

        .professional-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        .card-wrapper {
            background: var(--white);
            border-radius: 12px;
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .header-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white);
            padding: 40px 30px;
            text-align: center;
            position: relative;
        }

        .blue-badge {
            background: rgba(255, 255, 255, 0.2);
            color: var(--white);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            display: inline-block;
            margin-bottom: 15px;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .page-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .page-subtitle {
            font-size: 1.2rem;
            font-weight: 300;
            max-width: 750px;
            margin: 0 auto;
            opacity: 0.9;
        }

        .content-section {
            padding: 30px;
        }

        .card-display {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 40px;
            align-items: flex-start;
        }

        .ecs-image-container {
            flex: 1;
            min-width: 300px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .ecs-image {
            width: 100%;
            height: auto;
            display: block;
        }

        .image-caption {
            padding: 12px 15px;
            background: var(--light);
            text-align: center;
            font-size: 0.9rem;
            color: var(--secondary);
        }

        .card-info {
            flex: 2;
            min-width: 300px;
        }

        .section-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--primary);
            border-bottom: 2px solid var(--primary);
            padding-bottom: 8px;
        }

        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }

        .info-item {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 15px;
            background: var(--light);
            border-radius: 8px;
            transition: var(--transition);
        }

        .info-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

        .info-icon {
            font-size: 1.5rem;
            color: var(--primary);
            min-width: 40px;
            text-align: center;
        }

        .info-text {
            display: flex;
            flex-direction: column;
        }

        .info-text strong {
            font-weight: 600;
            margin-bottom: 5px;
        }

        .info-text span {
            color: var(--secondary);
            font-size: 0.9rem;
        }

        .levels-section,
        .installer-features,
        .card-options,
        .apply-section,
        .details-grid,
        .faq-section {
            margin-bottom: 40px;
        }

        .levels-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin: 20px 0;
        }

        .level-card {
            background: var(--light);
            border-radius: 8px;
            padding: 25px;
            transition: var(--transition);
            border-top: 4px solid var(--primary);
        }

        .level-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }

        .level-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .level-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary);
        }

        .level-badge {
            background: var(--primary);
            color: var(--white);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        .level-description {
            margin-bottom: 15px;
            color: var(--secondary);
        }

        .level-responsibilities {
            list-style: none;
        }

        .level-responsibilities li {
            padding: 8px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .level-responsibilities i {
            color: var(--success);
            margin-top: 3px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 20px 0;
        }

        .feature-item {
            text-align: center;
            padding: 20px 15px;
            background: var(--light);
            border-radius: 8px;
            transition: var(--transition);
        }

        .feature-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

        .feature-item i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .feature-item h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .card-options {
            background: var(--light);
            padding: 25px;
            border-radius: 8px;
        }

        .option-group {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 15px;
        }

        .option-item {
            flex: 1;
            min-width: 200px;
        }

        .option-item input {
            display: none;
        }

        .option-label {
            display: block;
            padding: 15px 20px;
            background: var(--white);
            border: 2px solid var(--border);
            border-radius: 8px;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 500;
        }

        .option-item input:checked + .option-label {
            background: var(--primary);
            color: var(--white);
            border-color: var(--primary);
        }

        .apply-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 30px;
            border-radius: 12px;
            text-align: center;
            color: var(--white);
        }

        .price-tag {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .apply-btn {
            display: inline-block;
            background: var(--white);
            color: var(--primary);
            padding: 15px 30px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

        .apply-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
        }

        .process-time {
            margin-top: 15px;
            opacity: 0.9;
        }

        .details-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .detail-section {
            margin-bottom: 30px;
        }

        .detail-section h2 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--primary);
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border);
        }

        .requirements-list,
        .documents-list,
        .process-list {
            list-style: none;
        }

        .requirements-list li,
        .documents-list li,
        .process-list li {
            padding: 10px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .list-icon {
            color: var(--success);
            margin-top: 3px;
            min-width: 20px;
        }

        .process-list {
            counter-reset: step-counter;
        }

        .process-list li {
            counter-increment: step-counter;
            position: relative;
            padding-left: 30px;
        }

        .process-list li::before {
            content: counter(step-counter);
            background: var(--primary);
            color: var(--white);
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            position: absolute;
            left: 0;
            top: 10px;
        }

        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }

        .benefit-item {
            text-align: center;
            padding: 20px 15px;
            background: var(--light);
            border-radius: 8px;
            transition: var(--transition);
        }

        .benefit-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

        .benefit-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .benefit-item h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .faq-section {
            background: var(--light);
            padding: 30px;
            border-radius: 8px;
        }

        .faq-item {
            margin-bottom: 15px;
            border: 1px solid var(--border);
            border-radius: 8px;
            overflow: hidden;
        }

        .faq-question {
            padding: 15px 20px;
            background: var(--white);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 500;
            transition: var(--transition);
        }

        .faq-question:hover {
            background: #f0f0f0;
        }

        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-answer {
            padding: 0 20px;
            background: var(--white);
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }

        .faq-item.active .faq-answer {
            padding: 15px 20px;
            max-height: 500px;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        @media (max-width: 768px) {
            .page-title {
                font-size: 2rem;
            }
            
            .page-subtitle {
                font-size: 1rem;
            }
            
            .content-section {
                padding: 20px;
            }
            
            .option-group {
                flex-direction: column;
            }
            
            .level-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
        }