:root {
            --primary-color: #d32f2f;
            --primary-dark: #b71c1c;
            --primary-light: #ffcdd2;
            --accent-color: #ffeb3b;
            --text-dark: #212121;
            --text-muted: #666666;
            --bg-light: #f9f9f9;
            --bg-white: #ffffff;
            --border-color: #e0e0e0;
            --border-radius: 12px;
            --transition: all 0.3s ease;
            --container-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
            color: var(--text-dark);
            background-color: var(--bg-light);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
            background-color: var(--bg-white);
        }

        section:nth-child(even) {
            background-color: var(--bg-light);
        }

        /* Typography */
        h1, h2, h3, h4 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
        }

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

        .section-header h2 {
            font-size: 2rem;
            color: var(--primary-dark);
            display: inline-block;
            padding-bottom: 10px;
        }

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

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

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

        a:hover {
            color: var(--primary-dark);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 30px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: var(--bg-white);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: var(--bg-white);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(211, 47, 47, 0.3);
        }

        .btn-secondary {
            background-color: transparent;
            border-color: var(--primary-color);
            color: var(--primary-color);
        }

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

        /* Header & Navigation */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px 20px;
            max-width: var(--container-width);
            margin: 0 auto;
        }

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

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

        .brand-name {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary-dark);
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
            align-items: center;
        }

        .nav-menu a {
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 5px 0;
            border-bottom: 2px solid transparent;
        }

        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--primary-color);
            border-bottom-color: var(--primary-color);
        }

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

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

        /* Hero Section (No Images allowed here) */
        .hero {
            background: linear-gradient(135deg, #b71c1c 0%, #d32f2f 50%, #800c0c 100%);
            color: var(--bg-white);
            padding: 120px 0 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: none;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 50% 50%, rgba(255, 235, 59, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .hero-tag {
            background-color: var(--accent-color);
            color: #800c0c;
            display: inline-block;
            padding: 6px 16px;
            font-weight: 700;
            border-radius: 20px;
            font-size: 0.9rem;
            margin-bottom: 20px;
            text-transform: uppercase;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
        }

        .hero h1 {
            font-size: 2.8rem;
            color: var(--bg-white);
            margin-bottom: 25px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }

        .hero p {
            font-size: 1.25rem;
            margin-bottom: 35px;
            opacity: 0.95;
            line-height: 1.6;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .hero-btns .btn-secondary {
            border-color: var(--bg-white);
            color: var(--bg-white);
        }

        .hero-btns .btn-secondary:hover {
            background-color: rgba(255,255,255,0.15);
        }

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .stats-card {
            background-color: var(--bg-white);
            border-radius: var(--border-radius);
            padding: 30px 20px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            border: 1px solid var(--border-color);
            border-top: 4px solid var(--primary-color);
            transition: var(--transition);
        }

        .stats-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(211, 47, 47, 0.15);
        }

        .stats-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .stats-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Platform Intro (Software Intro) */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .intro-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .features-checklist {
            list-style: none;
        }

        .features-checklist li {
            position: relative;
            padding-left: 30px;
            margin-bottom: 15px;
            font-weight: 500;
        }

        .features-checklist li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--primary-color);
            font-weight: 900;
            font-size: 1.2rem;
        }

        /* Grid Lists (Services, Workflow, Solutions) */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .feature-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 30px;
            transition: var(--transition);
            position: relative;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            border-color: var(--primary-light);
        }

        .feature-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

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

        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Model tags cloud */
        .tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 30px;
            padding: 20px;
            background-color: var(--bg-light);
            border-radius: var(--border-radius);
        }

        .tag {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .tag:hover {
            background-color: var(--primary-color);
            color: var(--bg-white);
            border-color: var(--primary-color);
        }

        /* Workflow Steps */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

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

        .step-num {
            width: 60px;
            height: 60px;
            background-color: var(--primary-color);
            color: var(--bg-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            margin: 0 auto 20px auto;
            border: 4px solid var(--bg-white);
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        }

        .workflow-step h3 {
            margin-bottom: 10px;
            font-size: 1.2rem;
        }

        .workflow-step p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* National Network & Technical Standards */
        .network-section {
            background: linear-gradient(to right, #ffffff, #fcf5f5);
        }

        .split-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .list-group {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .list-item {
            display: flex;
            gap: 15px;
            background-color: var(--bg-white);
            padding: 15px;
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
        }

        .list-item-icon {
            color: var(--primary-color);
            font-weight: 700;
        }

        /* Case Studies (Images) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

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

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.1);
        }

        .case-img-container {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #eaeaea;
        }

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

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

        .case-info {
            padding: 20px;
        }

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

        .case-info h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .case-info p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* Comparison Section */
        .rating-box {
            text-align: center;
            background-color: var(--primary-light);
            padding: 30px;
            border-radius: var(--border-radius);
            margin-bottom: 40px;
            border: 1px solid rgba(211,47,47,0.2);
        }

        .rating-score {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--primary-dark);
            line-height: 1;
        }

        .rating-stars {
            color: #ffb300;
            font-size: 1.8rem;
            margin: 10px 0;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            background-color: var(--bg-white);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

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

        th {
            background-color: var(--bg-light);
            font-weight: 700;
            color: var(--text-dark);
        }

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

        .highlight-col {
            background-color: rgba(211, 47, 47, 0.03);
            font-weight: 600;
        }

        .text-success {
            color: #2e7d32;
            font-weight: bold;
        }

        /* Token Price Section */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .price-card {
            background-color: var(--bg-white);
            border: 2px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 35px 25px;
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

        .price-card.popular {
            border-color: var(--primary-color);
            box-shadow: 0 8px 24px rgba(211,47,47,0.1);
        }

        .price-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--primary-color);
            color: var(--bg-white);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 12px;
        }

        .price-header h3 {
            font-size: 1.4rem;
            margin-bottom: 10px;
        }

        .price-amount {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin: 20px 0;
        }

        .price-amount span {
            font-size: 1rem;
            font-weight: 400;
            color: var(--text-muted);
        }

        .price-features {
            list-style: none;
            padding: 0;
            margin: 20px 0;
            text-align: left;
        }

        .price-features li {
            padding: 8px 0;
            border-bottom: 1px dashed var(--border-color);
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* Training Sections */
        .training-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .training-box {
            background-color: var(--bg-white);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            padding: 35px;
        }

        .training-box h3 {
            font-size: 1.5rem;
            color: var(--primary-dark);
            margin-bottom: 15px;
        }

        /* FAQ Accordion */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 20px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.4rem;
            color: var(--primary-color);
            font-weight: 700;
            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(--bg-light);
        }

        .faq-answer p {
            padding: 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 1px solid var(--border-color);
        }

        /* Customer Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background-color: var(--bg-white);
            border-radius: var(--border-radius);
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .review-text {
            font-style: italic;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .author-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .author-info h4 {
            font-size: 0.95rem;
            margin-bottom: 2px;
        }

        .author-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Form & Contact */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .contact-form-box {
            background-color: var(--bg-white);
            border-radius: var(--border-radius);
            padding: 40px;
            border: 1px solid var(--border-color);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group label {
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 0.95rem;
            background-color: var(--bg-light);
            outline: none;
            transition: var(--transition);
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary-color);
            background-color: var(--bg-white);
            box-shadow: 0 0 0 3px rgba(211,47,47,0.1);
        }

        .contact-info-box {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .info-card {
            background-color: var(--bg-white);
            border-radius: var(--border-radius);
            padding: 25px;
            border: 1px solid var(--border-color);
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .info-qr {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
        }

        .info-text-content h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .info-text-content p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* Footer */
        footer {
            background-color: #1a1a1a;
            color: #e0e0e0;
            padding: 60px 0 20px 0;
            border-top: 5px solid var(--primary-color);
        }

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

        .footer-brand h3 {
            color: var(--bg-white);
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: var(--bg-white);
            margin-bottom: 15px;
            font-size: 1.05rem;
        }

        .footer-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }

        .footer-links a {
            color: #b0b0b0;
            font-size: 0.9rem;
        }

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

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

        .friend-links a {
            background-color: #2b2b2b;
            color: #b0b0b0;
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
        }

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

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #888;
        }

        /* Floaters */
        .float-widget {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .float-item {
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: var(--bg-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
            cursor: pointer;
            transition: var(--transition);
            font-weight: 700;
            position: relative;
        }

        .float-item:hover {
            background-color: var(--primary-dark);
            transform: scale(1.05);
        }

        .float-qr {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--bg-white);
            padding: 10px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
            border: 1px solid var(--border-color);
        }

        .float-qr img {
            width: 120px;
            height: 120px;
            display: block;
        }

        .float-item:hover .float-qr {
            display: block;
        }

        /* Responsive adjustments */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: -20px;
                padding: 0 20px;
            }
            .intro-grid, .split-grid, .contact-grid, .training-container {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--bg-white);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1.05rem;
            }
            .workflow-timeline {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .price-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }
            .form-row {
                grid-template-columns: 1fr;
                gap: 0;
            }
        }