/* CSS Reset & Variables */
        :root {
            --primary: #0d9488;
            --primary-hover: #0f766e;
            --primary-light: #ccfbf1;
            --secondary: #06b6d4;
            --dark: #0f172a;
            --gray: #4b5563;
            --light-gray: #f8fafc;
            --border-color: #e2e8f0;
            --bg-gradient: linear-gradient(135deg, #f0fdfa 0%, #ffffff 100%);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--dark);
            background: var(--light-gray);
            line-height: 1.6;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        /* Layout Container */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 80px 0;
            background: #ffffff;
        }

        section.alt-bg {
            background: var(--light-gray);
        }

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

        .section-header h2 {
            font-size: 2rem;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            border-radius: 2px;
        }

        .section-header p {
            color: var(--gray);
            margin-top: 15px;
            font-size: 1.1rem;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #ffffff !important;
            box-shadow: 0 4px 15px rgba(13, 148, 136, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
        }

        .btn-outline {
            border: 2px solid var(--primary);
            color: var(--primary) !important;
            background: transparent;
        }

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

        /* Navigation */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ai-page-logo {
            height: 40px;
            width: auto;
        }

        .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            gap: 20px;
            list-style: none;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--dark);
        }

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

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* Hero Section (No Image) */
        .hero {
            background: var(--bg-gradient);
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 40%;
            background: radial-gradient(circle, rgba(45, 212, 191, 0.15) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 20px;
            font-weight: 800;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--gray);
            margin-bottom: 35px;
        }

        .hero-btn-group {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
        }

        /* Stats Cards (Within Hero & Main) */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.85);
            padding: 25px 20px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(13, 148, 136, 0.1);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 30px rgba(13, 148, 136, 0.1);
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* About Section (Platform Intro) */
        .about-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .about-text p {
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .platform-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .feature-item {
            background: #ffffff;
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .feature-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .feature-item p {
            font-size: 0.85rem;
            color: var(--gray);
            margin: 0;
        }

        /* Services Grid */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: #ffffff;
            padding: 35px 25px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.05);
        }

        .service-card:hover::before {
            transform: scaleX(1);
        }

        .service-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--gray);
        }

        /* Model Aggregation List */
        .model-list-wrap {
            margin-top: 50px;
            text-align: center;
        }

        .model-list-title {
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .model-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .model-badge {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--dark);
            transition: var(--transition);
        }

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

        /* Workflow Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
            position: relative;
        }

        .step-card {
            background: #ffffff;
            padding: 30px 20px;
            border-radius: 10px;
            text-align: center;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 20px;
        }

        .step-card h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--gray);
        }

        /* Network & Solution Maps (Stylized Layout) */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .sol-card {
            display: flex;
            gap: 20px;
            background: #ffffff;
            padding: 25px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .sol-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
        }

        .sol-content h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        .sol-content p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* Service Network Section */
        .network-section {
            background: linear-gradient(to bottom, #ffffff, var(--light-gray));
            text-align: center;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
            margin-top: 30px;
        }

        .network-node {
            background: #ffffff;
            padding: 15px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            font-weight: 600;
            font-size: 0.9rem;
        }

        /* Table Style (Token Compare & Standards) */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            margin-top: 30px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background: #ffffff;
        }

        .styled-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 0.95rem;
        }

        .styled-table th, .styled-table td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .styled-table th {
            background-color: var(--light-gray);
            font-weight: 600;
            color: var(--dark);
        }

        .styled-table tr:last-child td {
            border-bottom: none;
        }

        .styled-table tr:hover {
            background-color: rgba(13, 148, 136, 0.02);
        }

        /* Rating Highlight */
        .rating-badge {
            display: inline-flex;
            align-items: center;
            background: #fffbeb;
            border: 1px solid #fef3c7;
            padding: 6px 12px;
            border-radius: 20px;
            color: #d97706;
            font-weight: 600;
            font-size: 0.9rem;
        }

        /* Case Studies (with designated images) */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
        }

        .case-img-wrap {
            height: 200px;
            overflow: hidden;
            position: relative;
            background: #e2e8f0;
        }

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

        .case-card:hover .case-img-wrap img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.75rem;
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .case-info h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .case-info p {
            font-size: 0.85rem;
            color: var(--gray);
        }

        /* Review / Testimonials */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background: #ffffff;
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 10px rgba(0,0,0,0.01);
        }

        .review-stars {
            color: #fbbf24;
            margin-bottom: 15px;
            font-size: 1rem;
        }

        .review-text {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
        }

        .user-meta h4 {
            font-size: 0.9rem;
            margin: 0;
        }

        .user-meta span {
            font-size: 0.75rem;
            color: var(--gray);
        }

        /* Training Sections */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .train-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 25px 15px;
            border-radius: 10px;
            text-align: center;
            transition: var(--transition);
        }

        .train-card:hover {
            border-color: var(--primary);
            background: var(--light-gray);
            transform: translateY(-3px);
        }

        .train-icon {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .train-card h3 {
            font-size: 0.95rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .train-card p {
            font-size: 0.75rem;
            color: var(--gray);
        }

        /* Form styling */
        .form-wrap {
            max-width: 650px;
            margin: 0 auto;
            background: #ffffff;
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
        }

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

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 15px 0;
        }

        .faq-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            padding: 10px 0;
        }

        .faq-header h3 {
            font-size: 1.05rem;
            color: var(--dark);
            font-weight: 600;
            margin: 0;
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .faq-body p {
            padding: 15px 0;
            color: var(--gray);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        /* Troubleshooting & Encyclopedia & Articles */
        .helper-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .helper-box {
            background: #ffffff;
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .helper-box h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: var(--dark);
            border-left: 4px solid var(--primary);
            padding-left: 10px;
        }

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

        .helper-list li {
            padding: 10px 0;
            border-bottom: 1px dotted var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .helper-list a {
            font-size: 0.95rem;
            color: var(--dark);
        }

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

        .helper-tag {
            font-size: 0.75rem;
            background: var(--light-gray);
            padding: 3px 8px;
            border-radius: 4px;
            color: var(--gray);
        }

        /* Contact Details & QR Code */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }

        .contact-info-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 25px;
        }

        .contact-card {
            background: var(--light-gray);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .contact-card h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .contact-card p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        .qrcode-wrap {
            text-align: center;
            background: #ffffff;
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
        }

        .qrcode-wrap img {
            width: 160px;
            height: 160px;
            margin-bottom: 15px;
            border: 1px solid var(--border-color);
            padding: 5px;
        }

        .qrcode-wrap p {
            font-size: 0.9rem;
            color: var(--dark);
            font-weight: 600;
        }

        /* Footer */
        footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.85rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
            border-bottom: 1px solid #334155;
            padding-bottom: 40px;
        }

        .footer-logo-area {
            max-width: 300px;
        }

        .footer-logo-area p {
            margin-top: 15px;
            line-height: 1.6;
        }

        .footer-links-title {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

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

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

        .footer-links-list a {
            color: #94a3b8;
        }

        .footer-links-list a:hover {
            color: #ffffff;
        }

        .friendship-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friendship-links a {
            color: #94a3b8;
            background: #1e293b;
            padding: 4px 10px;
            border-radius: 4px;
        }

        .friendship-links a:hover {
            background: var(--primary);
            color: #ffffff;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* Floating Contact Box */
        .floating-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: #ffffff;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            width: 140px;
            text-align: center;
            padding: 15px 10px;
            transition: var(--transition);
        }

        .floating-contact:hover {
            transform: translateY(-5px);
        }

        .floating-contact img {
            width: 100px;
            height: 100px;
            margin-bottom: 8px;
        }

        .floating-contact p {
            font-size: 0.75rem;
            color: var(--dark);
            font-weight: 600;
            margin: 0;
        }

        .close-float {
            position: absolute;
            top: -10px;
            right: -10px;
            background: var(--dark);
            color: #ffffff;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            font-size: 0.65rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: none;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .services-grid, .case-grid, .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 50px 0;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #ffffff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-intro, .contact-layout, .helper-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .services-grid, .case-grid, .review-grid, .solutions-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .network-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
        }