/* CSS Variables for Bright Green Palette */
        :root {
            --primary: #10b981; /* Emerald Green */
            --primary-hover: #059669;
            --primary-light: #ecfdf5;
            --primary-dark: #064e3b;
            --dark: #0f172a;
            --dark-soft: #1e293b;
            --light: #ffffff;
            --light-soft: #f8fafc;
            --border: #e2e8f0;
            --shadow: 0 4px 20px -2px rgba(16, 185, 129, 0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* Global Reset */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--light);
            color: var(--dark-soft);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Outer Centering Container */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Header Style */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }

        .brand img {
            height: 40px;
            width: auto;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
        }

        .nav-links {
            display: flex;
            gap: 24px;
            list-style: none;
            align-items: center;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--dark-soft);
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-btn {
            background-color: var(--primary);
            color: var(--light) !important;
            padding: 8px 20px;
            border-radius: 6px;
            transition: var(--transition);
        }

        .nav-btn:hover {
            background-color: var(--primary-hover);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 30px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* Section Global Style */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background-color: var(--primary);
            margin: 8px auto 0;
            border-radius: 2px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--gray);
            max-width: 600px;
            margin: 0 auto;
        }

        /* Hero Section (No Image) */
        .hero {
            background: radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 50%),
                        var(--light-soft);
            padding: 120px 0;
            text-align: center;
            border-bottom: 1px solid var(--border);
        }

        .hero-inner {
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 24px;
        }

        .hero h1 span {
            color: var(--primary);
        }

        .hero p {
            font-size: 18px;
            color: var(--dark-soft);
            margin-bottom: 40px;
            line-height: 1.6;
        }

        .hero-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-block;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 8px;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--light);
            border: 2px solid var(--primary);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            border-color: var(--primary-hover);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--dark-soft);
            border: 2px solid var(--border);
        }

        .btn-secondary:hover {
            background-color: var(--light-soft);
            border-color: var(--dark-soft);
            transform: translateY(-2px);
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 60px;
        }

        .stat-card {
            background-color: var(--light);
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .stat-card h3 {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-card p {
            font-size: 14px;
            color: var(--gray);
        }

        /* Services section */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background-color: var(--light);
            border: 1px solid var(--border);
            padding: 32px 24px;
            border-radius: 12px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: rgba(16, 185, 129, 0.2);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.6;
        }

        /* Model Aggregation List */
        .model-list-wrapper {
            background-color: var(--light-soft);
            padding: 30px;
            border-radius: 12px;
            margin-top: 40px;
            border: 1px solid var(--border);
        }

        .model-list-title {
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 20px;
            text-align: center;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .model-tag {
            background-color: var(--light);
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--dark-soft);
            transition: var(--transition);
        }

        .model-tag:hover {
            border-color: var(--primary);
            background-color: var(--primary-light);
            color: var(--primary-hover);
        }

        /* Production Scenario (Feature showcase with image) */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .feature-img-wrapper {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .feature-img-wrapper img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
            transition: var(--transition);
        }

        .feature-img-wrapper:hover img {
            transform: scale(1.03);
        }

        .feature-content h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .feature-content p {
            margin-bottom: 24px;
            color: var(--dark-soft);
        }

        .feature-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .feature-list li {
            position: relative;
            padding-left: 24px;
            font-size: 15px;
            font-weight: 500;
        }

        .feature-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 900;
        }

        /* Flow / Step component */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            margin-top: 40px;
        }

        .step-card {
            background-color: var(--light-soft);
            border: 1px solid var(--border);
            padding: 30px 20px;
            border-radius: 12px;
            position: relative;
            text-align: center;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: var(--light);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            margin: 0 auto 20px;
            font-weight: 700;
            font-size: 16px;
        }

        .step-card h4 {
            font-size: 18px;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 13px;
            color: var(--gray);
        }

        /* Comparison Table */
        .table-responsive {
            overflow-x: auto;
            background-color: var(--light);
            border: 1px solid var(--border);
            border-radius: 12px;
            box-shadow: var(--shadow);
        }

        .comp-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 15px;
        }

        .comp-table th, .comp-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
        }

        .comp-table th {
            background-color: var(--light-soft);
            color: var(--dark);
            font-weight: 700;
        }

        .comp-table tbody tr:hover {
            background-color: rgba(16, 185, 129, 0.02);
        }

        .comp-table td strong {
            color: var(--primary-hover);
        }

        /* Token Price Reference Block */
        .token-pricing-wrapper {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #065f46 100%);
            color: var(--light);
            padding: 40px;
            border-radius: 16px;
            margin-top: 40px;
        }

        .token-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 20px;
            margin-bottom: 20px;
            flex-wrap: wrap;
            gap: 15px;
        }

        .token-header h3 {
            font-size: 22px;
            font-weight: 700;
        }

        .token-header span {
            background-color: rgba(255,255,255,0.15);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 13px;
        }

        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .token-item {
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px;
            border-radius: 8px;
            text-align: center;
        }

        .token-name {
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 8px;
            color: var(--primary);
        }

        .token-cost {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 4px;
        }

        .token-unit {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
        }

        /* Training Component */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .training-card {
            background-color: var(--light);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 24px;
            text-align: center;
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .training-badge {
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 700;
            display: inline-block;
            margin-bottom: 12px;
        }

        .training-card h4 {
            font-size: 16px;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .training-cert {
            font-size: 12px;
            color: var(--gray);
        }

        /* Cases Grid (Showing banners & screenshots) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-item {
            background-color: var(--light);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .case-img-container {
            width: 100%;
            height: 240px;
            overflow: hidden;
            position: relative;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-item:hover .case-img-container img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .case-info p {
            color: var(--gray);
            font-size: 14px;
        }

        /* Feedback Grid (6 Reviews) */
        .feedback-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .feedback-card {
            background-color: var(--light-soft);
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 12px;
            position: relative;
        }

        .feedback-stars {
            color: #fbbf24;
            margin-bottom: 12px;
            font-size: 14px;
        }

        .feedback-text {
            font-size: 14px;
            color: var(--dark-soft);
            margin-bottom: 20px;
            min-height: 80px;
        }

        .feedback-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .feedback-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .feedback-user-info h5 {
            font-size: 14px;
            color: var(--dark);
        }

        .feedback-user-info span {
            font-size: 11px;
            color: var(--gray);
        }

        /* FAQ Accordion */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            background-color: var(--light);
            transition: var(--transition);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            color: var(--primary);
            font-weight: bold;
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: '−';
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: var(--light-soft);
        }

        .faq-answer-inner {
            padding: 20px 24px;
            font-size: 14px;
            color: var(--dark-soft);
            border-top: 1px solid var(--border);
        }

        /* Self troubleshoot & glossary block */
        .help-center-meta {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 50px;
        }

        .trouble-card, .glossary-card {
            background-color: var(--light-soft);
            border: 1px solid var(--border);
            padding: 30px;
            border-radius: 12px;
        }

        .help-center-meta h3 {
            font-size: 20px;
            margin-bottom: 16px;
            color: var(--dark);
        }

        .trouble-list {
            list-style: none;
        }

        .trouble-list li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            font-size: 14px;
        }

        .trouble-list li:last-child {
            border-bottom: none;
        }

        .glossary-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .glossary-tag {
            background-color: var(--light);
            border: 1px solid var(--border);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            color: var(--dark-soft);
        }

        /* Form styling */
        .form-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: start;
        }

        .form-container {
            background-color: var(--light);
            border: 1px solid var(--border);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark-soft);
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 15px;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
        }

        .form-text {
            height: 100px;
            resize: vertical;
        }

        .contact-info-card {
            background-color: var(--light-soft);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 40px;
        }

        .contact-info-card h3 {
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 24px;
        }

        .contact-details {
            margin-bottom: 30px;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 15px;
        }

        .contact-item strong {
            color: var(--dark);
        }

        .qr-wrapper {
            display: flex;
            gap: 30px;
            align-items: center;
            margin-top: 30px;
            background-color: var(--light);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border);
        }

        .qr-box {
            text-align: center;
        }

        .qr-box img {
            width: 100px;
            height: 100px;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .qr-box p {
            font-size: 12px;
            color: var(--gray);
            font-weight: 500;
        }

        /* Articles list */
        .articles-list {
            list-style: none;
            margin-top: 30px;
        }

        .articles-list li {
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 15px;
        }

        .articles-list li:last-child {
            border-bottom: none;
        }

        .articles-list a {
            color: var(--dark-soft);
            text-decoration: none;
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
        }

        .articles-list a:hover {
            color: var(--primary);
        }

        .article-tag {
            background-color: var(--primary-light);
            color: var(--primary-hover);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
        }

        /* Footer */
        footer {
            background-color: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            font-size: 14px;
            border-top: 5px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 50px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: var(--light);
            font-size: 16px;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 30px;
            height: 2px;
            background-color: var(--primary);
        }

        .footer-col p {
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }

        .friend-links {
            margin-top: 15px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .friend-links a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            background-color: rgba(255,255,255,0.05);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: var(--light);
            background-color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            text-align: center;
            font-size: 12px;
        }

        .ai-page-home-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: bold;
        }

        .ai-page-home-link:hover {
            text-decoration: underline;
        }

        /* Floating customer service widget */
        .floating-widget {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            background-color: var(--light);
            border: 1px solid var(--border);
            border-radius: 50%;
            width: 50px;
            height: 50px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .floating-widget:hover {
            background-color: var(--primary);
            transform: scale(1.05);
        }

        .floating-widget svg {
            width: 24px;
            height: 24px;
            fill: var(--primary-hover);
            transition: var(--transition);
        }

        .floating-widget:hover svg {
            fill: var(--light);
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--light);
            border: 1px solid var(--border);
            padding: 16px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            display: none;
            text-align: center;
            width: 150px;
        }

        .floating-widget:hover .qr-popover {
            display: block;
        }

        .qr-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .qr-popover span {
            font-size: 12px;
            color: var(--dark);
            font-weight: 500;
        }

        /* Mobile Responsive adjustments */
        @media (max-width: 992px) {
            .feature-block {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .step-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
            .token-grid {
                grid-template-columns: 1fr;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .form-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--light);
                border-bottom: 1px solid var(--border);
                padding: 20px;
                gap: 15px;
                box-shadow: var(--shadow);
            }

            .nav-links.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .help-center-meta {
                grid-template-columns: 1fr;
            }

            .hero h1 {
                font-size: 32px;
            }
        }