/* CSS Reset & Variable Definitions */
        :root {
            --bg-color: #FAF6F0;
            --text-color: #1A1A1A;
            --border-color: #1A1A1A;
            --primary-yellow: #FFDE47;
            --primary-pink: #FF7EA5;
            --primary-green: #4EF0C0;
            --primary-blue: #4EA5F0;
            --white: #FFFFFF;
            --gray-light: #EFECE6;
            --thick-border: 3px solid var(--border-color);
            --thin-border: 2px solid var(--border-color);
            --neo-shadow: 4px 4px 0px var(--border-color);
            --neo-shadow-lg: 8px 8px 0px var(--border-color);
            --neo-shadow-sm: 2px 2px 0px var(--border-color);
            --transition-speed: 0.2s;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
        }

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

        /* Base Typography */
        h1, h2, h3, h4, h5, h6 {
            font-weight: 900;
            line-height: 1.2;
        }

        a {
            color: var(--text-color);
            text-decoration: none;
            transition: all var(--transition-speed) ease;
        }

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

        section {
            padding: 80px 0;
            border-bottom: var(--thick-border);
            position: relative;
        }

        /* Colorful Graffiti Styles */
        .badge {
            display: inline-block;
            padding: 6px 12px;
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            border: var(--thin-border);
            border-radius: 4px;
            box-shadow: var(--neo-shadow-sm);
            margin-bottom: 15px;
        }

        .badge-yellow { background-color: var(--primary-yellow); }
        .badge-pink { background-color: var(--primary-pink); }
        .badge-green { background-color: var(--primary-green); }
        .badge-blue { background-color: var(--primary-blue); }

        .btn-neo {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-weight: 800;
            font-size: 1rem;
            background-color: var(--primary-yellow);
            color: var(--text-color);
            border: var(--thick-border);
            border-radius: 4px;
            box-shadow: var(--neo-shadow);
            cursor: pointer;
            transition: transform 0.1s ease, box-shadow 0.1s ease;
        }

        .btn-neo:hover {
            transform: translate(2px, 2px);
            box-shadow: var(--neo-shadow-sm);
        }

        .btn-neo-pink { background-color: var(--primary-pink); }
        .btn-neo-green { background-color: var(--primary-green); }
        .btn-neo-blue { background-color: var(--primary-blue); }

        .card-neo {
            background-color: var(--white);
            border: var(--thick-border);
            border-radius: 8px;
            box-shadow: var(--neo-shadow);
            padding: 30px;
            transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
        }

        .card-neo:hover {
            transform: translate(-4px, -4px);
            box-shadow: var(--neo-shadow-lg);
        }

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

        .section-title {
            font-size: 2.5rem;
            display: inline-block;
            position: relative;
            z-index: 1;
            padding: 0 10px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 5px;
            left: 0;
            width: 100%;
            height: 15px;
            background-color: var(--primary-green);
            z-index: -1;
            transform: rotate(-1.5deg);
        }

        /* 1. Header & Navigation */
        header {
            background-color: var(--white);
            border-bottom: var(--thick-border);
            position: sticky;
            top: 0;
            z-index: 999;
            padding: 15px 0;
        }

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

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

        .ai-page-logo {
            height: 45px;
            width: auto;
            border: var(--thin-border);
            border-radius: 4px;
            background-color: var(--white);
        }

        .brand-name {
            font-size: 1.4rem;
            font-weight: 900;
            letter-spacing: -0.5px;
        }

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

        .nav-item a {
            font-weight: 700;
            font-size: 0.95rem;
            padding: 8px 12px;
            border: 2px solid transparent;
            border-radius: 4px;
        }

        .nav-item a:hover {
            background-color: var(--primary-yellow);
            border: var(--thin-border);
            box-shadow: var(--neo-shadow-sm);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: var(--thin-border);
            border-radius: 4px;
            width: 40px;
            height: 40px;
            cursor: pointer;
            justify-content: center;
            align-items: center;
            font-weight: 900;
        }

        /* 2. Hero Section (NO IMAGE AS REQUIRED) */
        #hero {
            background-color: var(--primary-blue);
            color: var(--text-color);
            padding: 100px 0;
            text-align: center;
            background-image: radial-gradient(var(--border-color) 15%, transparent 16%);
            background-size: 24px 24px;
            border-bottom: var(--thick-border);
        }

        .hero-badge-wrap {
            margin-bottom: 20px;
        }

        .hero-title-box {
            background: var(--white);
            border: var(--thick-border);
            padding: 30px;
            display: inline-block;
            transform: rotate(-1deg);
            box-shadow: var(--neo-shadow-lg);
            margin-bottom: 30px;
            max-width: 90%;
        }

        .hero-title {
            font-size: 3rem;
            margin: 0;
        }

        .hero-desc-box {
            background: var(--primary-green);
            border: var(--thick-border);
            padding: 15px 30px;
            display: inline-block;
            transform: rotate(1deg);
            box-shadow: var(--neo-shadow);
            margin-bottom: 40px;
            max-width: 80%;
        }

        .hero-desc {
            font-size: 1.25rem;
            font-weight: 700;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* 3. Data Indicators */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .data-card {
            background-color: var(--primary-pink);
            border: var(--thick-border);
            border-radius: 8px;
            box-shadow: var(--neo-shadow);
            padding: 25px;
            text-align: center;
            transform: rotate(calc(var(--r, 0) * 1deg));
        }

        .data-card:nth-child(even) {
            background-color: var(--primary-yellow);
            --r: 1.5;
        }

        .data-card:nth-child(odd) {
            --r: -1.5;
        }

        .data-num {
            font-size: 2.8rem;
            font-weight: 900;
            display: block;
            margin-bottom: 5px;
        }

        .data-label {
            font-weight: 700;
            font-size: 1rem;
        }

        /* 4. About Us */
        .about-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 2rem;
            margin-bottom: 20px;
        }

        .about-bullets {
            list-style: none;
            margin-top: 20px;
        }

        .about-bullets li {
            position: relative;
            padding-left: 30px;
            margin-bottom: 15px;
            font-weight: 700;
        }

        .about-bullets li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            background-color: var(--primary-green);
            border: var(--thin-border);
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 0.8rem;
            box-shadow: var(--neo-shadow-sm);
        }

        /* 5. AIGC Services */
        .grid-3col {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .service-card {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .service-icon {
            font-size: 3rem;
            margin-bottom: 15px;
        }

        /* 6. Production Flow */
        .flow-timeline {
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: relative;
        }

        .flow-timeline::before {
            content: '';
            position: absolute;
            left: 30px;
            top: 0;
            bottom: 0;
            width: 6px;
            background-color: var(--border-color);
        }

        .flow-step {
            display: flex;
            gap: 30px;
            position: relative;
            padding-left: 60px;
        }

        .flow-num {
            position: absolute;
            left: 10px;
            top: 5px;
            width: 46px;
            height: 46px;
            background-color: var(--primary-pink);
            border: var(--thick-border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.3rem;
            box-shadow: var(--neo-shadow-sm);
        }

        /* 7. Industry Solutions */
        .solution-card {
            border-left: 8px solid var(--primary-blue);
        }

        .solution-card:nth-child(even) {
            border-left-color: var(--primary-pink);
        }

        /* 8. Service Network & Technical Standards */
        .network-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .map-mock {
            background-color: var(--primary-yellow);
            border: var(--thick-border);
            border-radius: 8px;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            box-shadow: var(--neo-shadow);
        }

        .map-item {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: var(--thin-border);
            font-weight: 700;
        }

        .tech-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        /* 9. Case Center */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .case-card {
            overflow: hidden;
            padding: 0;
        }

        .case-img-container {
            border-bottom: var(--thick-border);
            background-color: var(--gray-light);
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

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

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

        .case-content {
            padding: 20px;
        }

        /* 10. Evaluation & Comparisons */
        .comparison-table-wrapper {
            overflow-x: auto;
            border: var(--thick-border);
            border-radius: 8px;
            box-shadow: var(--neo-shadow);
            background-color: var(--white);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border: var(--thin-border);
            font-weight: 700;
        }

        .comparison-table th {
            background-color: var(--primary-yellow);
        }

        .comparison-table tr:nth-child(even) {
            background-color: var(--bg-color);
        }

        .score-badge {
            background-color: var(--primary-pink);
            padding: 5px 10px;
            border: var(--thin-border);
            font-weight: 900;
            display: inline-block;
            transform: rotate(-2deg);
        }

        /* 11. Token Price List */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .token-card {
            border: var(--thick-border);
            border-radius: 8px;
            padding: 20px;
            background: var(--white);
            box-shadow: var(--neo-shadow-sm);
        }

        .token-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            border-bottom: var(--thin-border);
            padding-bottom: 10px;
        }

        .token-price {
            color: var(--primary-pink);
            font-size: 1.3rem;
            font-weight: 900;
        }

        /* 12. Training Section */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background-color: var(--primary-green);
            border: var(--thick-border);
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            box-shadow: var(--neo-shadow);
        }

        .training-card:nth-child(2n) {
            background-color: var(--primary-yellow);
        }

        .training-card:nth-child(3n) {
            background-color: var(--primary-blue);
        }

        /* 13. Smart Demand Form */
        .demand-section-wrapper {
            background-color: var(--primary-yellow);
            border-top: var(--thick-border);
            border-bottom: var(--thick-border);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: flex-start;
        }

        .form-wrapper-card {
            background-color: var(--white);
            border: var(--thick-border);
            padding: 40px;
            border-radius: 8px;
            box-shadow: var(--neo-shadow-lg);
        }

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

        .form-group label {
            display: block;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: var(--thick-border);
            border-radius: 4px;
            font-family: inherit;
            font-size: 1rem;
            font-weight: 700;
            background-color: var(--bg-color);
        }

        .form-control:focus {
            outline: none;
            background-color: var(--white);
            border-color: var(--primary-blue);
        }

        /* 14. FAQ Section */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            border: var(--thick-border);
            border-radius: 8px;
            background-color: var(--white);
            overflow: hidden;
            box-shadow: var(--neo-shadow-sm);
        }

        .faq-question {
            padding: 20px;
            background-color: var(--white);
            font-weight: 800;
            font-size: 1.1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 900;
            transition: transform var(--transition-speed) ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-speed) ease-out;
            border-top: 0 solid var(--border-color);
            background-color: var(--gray-light);
        }

        .faq-item.active .faq-answer {
            border-top: var(--thin-border);
            max-height: 500px; /* arbitrary height to slide down */
        }

        .faq-answer-inner {
            padding: 20px;
            font-weight: 700;
        }

        /* 15. User Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .review-card {
            border: var(--thick-border);
            border-radius: 8px;
            padding: 25px;
            background-color: var(--white);
            box-shadow: var(--neo-shadow);
        }

        .reviewer-meta {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 15px;
            border-bottom: var(--thin-border);
            padding-bottom: 10px;
        }

        .reviewer-avatar {
            width: 50px;
            height: 50px;
            background-color: var(--primary-pink);
            border: var(--thin-border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
        }

        .reviewer-info h4 {
            margin: 0;
            font-size: 1.1rem;
        }

        .reviewer-info span {
            font-size: 0.85rem;
            color: #666;
            font-weight: 700;
        }

        .review-text {
            font-weight: 700;
        }

        /* 16. Terminology & Info Center */
        .info-tab-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

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

        .term-card {
            background-color: var(--white);
            border: var(--thick-border);
            padding: 20px;
            border-radius: 8px;
        }

        .term-title {
            color: var(--primary-pink);
            font-size: 1.1rem;
            font-weight: 900;
            margin-bottom: 5px;
        }

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

        .article-item {
            border: var(--thick-border);
            border-radius: 8px;
            background-color: var(--white);
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: var(--neo-shadow-sm);
        }

        .article-item:hover {
            transform: translate(-2px, -2px);
            box-shadow: var(--neo-shadow);
        }

        .article-title {
            font-weight: 800;
        }

        .article-link {
            font-weight: 900;
            background-color: var(--primary-yellow);
            border: var(--thin-border);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.85rem;
        }

        .banner-flex {
            display: flex;
            gap: 20px;
            margin-top: 30px;
            flex-wrap: wrap;
        }

        .banner-flex img {
            flex: 1;
            min-width: 250px;
            border: var(--thick-border);
            border-radius: 8px;
            box-shadow: var(--neo-shadow);
        }

        /* 17. Contact Info & Footer */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .contact-card-info {
            background-color: var(--primary-green);
            border: var(--thick-border);
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--neo-shadow);
            color: var(--text-color);
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .contact-item-icon {
            font-size: 1.8rem;
            width: 45px;
            height: 45px;
            background: var(--white);
            border: var(--thin-border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .qr-item {
            background-color: var(--white);
            border: var(--thick-border);
            padding: 10px;
            border-radius: 8px;
            text-align: center;
            flex: 1;
            min-width: 140px;
            box-shadow: var(--neo-shadow-sm);
        }

        .qr-item img {
            width: 100%;
            height: auto;
            border: var(--thin-border);
            border-radius: 4px;
        }

        .qr-label {
            font-size: 0.85rem;
            font-weight: 800;
            margin-top: 8px;
        }

        footer {
            background-color: var(--text-color);
            color: var(--white);
            padding: 50px 0 20px;
            border-top: var(--thick-border);
        }

        .footer-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            max-width: 300px;
        }

        .footer-brand p {
            margin-top: 15px;
            color: #ccc;
        }

        .footer-links-group {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links-group h5 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            position: relative;
            display: inline-block;
        }

        .footer-links-group h5::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 30px;
            height: 3px;
            background-color: var(--primary-yellow);
        }

        .footer-links-group a {
            color: #ccc;
            font-weight: 700;
        }

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

        .footer-bottom {
            border-top: 1px solid #444;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.9rem;
            color: #999;
        }

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

        .friend-links a {
            color: #999;
            font-size: 0.85rem;
            border-bottom: 1px dashed #666;
        }

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

        /* 18. Float Customer Service & Return Top */
        .float-widget {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 15px;
            z-index: 999;
        }

        .float-btn {
            width: 55px;
            height: 55px;
            background-color: var(--primary-pink);
            border: var(--thick-border);
            border-radius: 50%;
            box-shadow: var(--neo-shadow-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            transition: all var(--transition-speed) ease;
        }

        .float-btn:hover {
            transform: scale(1.1);
            background-color: var(--primary-yellow);
        }

        .float-btn-top {
            background-color: var(--primary-blue);
        }

        /* Float QR Box hovering effect */
        .float-btn-qr-container {
            position: relative;
        }

        .float-qr-hover {
            position: absolute;
            right: 70px;
            bottom: 0;
            background: var(--white);
            border: var(--thick-border);
            border-radius: 8px;
            padding: 10px;
            box-shadow: var(--neo-shadow);
            width: 150px;
            display: none;
            text-align: center;
        }

        .float-qr-hover img {
            width: 100%;
            height: auto;
            border: var(--thin-border);
        }

        .float-btn-qr-container:hover .float-qr-hover {
            display: block;
        }

        /* Responsive Styles */
        @media (max-width: 992px) {
            .about-layout, .form-grid, .network-wrap, .info-tab-layout, .contact-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-desc {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--white);
                border-bottom: var(--thick-border);
                padding: 20px;
                gap: 15px;
                box-shadow: var(--neo-shadow);
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: flex;
            }
            section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 2rem;
            }
            .footer-wrapper {
                flex-direction: column;
            }
        }