:root {
            --primary: #0052FF;
            --primary-light: #EBF1FF;
            --secondary: #00DF89;
            --dark: #0A1128;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --light-bg: #F8FAFC;
            --border-color: #E2E8F0;
            --accent: #FF5A5F;
            --max-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
        }

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

        /* Container Alignment */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

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

        h2 {
            font-size: 2.2rem;
            margin-bottom: 1rem;
            text-align: center;
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-desc {
            text-align: center;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 3rem auto;
            font-size: 1.1rem;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 8px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, #1e62ff 100%);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.4);
        }

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

        .btn-secondary:hover {
            background-color: #dee7ff;
            transform: translateY(-2px);
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--secondary) 0%, #00c77a 100%);
            color: var(--dark);
            box-shadow: 0 4px 14px rgba(0, 223, 137, 0.3);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 223, 137, 0.4);
        }

        /* Header */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            height: 70px;
            display: flex;
            align-items: center;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

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

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

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

        .nav-menu a {
            color: var(--text-main);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.3s;
        }

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

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }

        /* Sections */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        /* Hero - No Images Allowed */
        .hero-section {
            padding-top: 150px;
            padding-bottom: 100px;
            background: radial-gradient(circle at 90% 10%, rgba(0, 223, 137, 0.1) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(0, 82, 255, 0.08) 0%, transparent 40%),
                        var(--light-bg);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: linear-gradient(var(--border-color) 1px, transparent 1px),
                              linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
            background-size: 40px 40px;
            opacity: 0.15;
            pointer-events: none;
        }

        .hero-title-tag {
            display: inline-block;
            padding: 6px 16px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(0, 82, 255, 0.15);
        }

        .hero-section h1 {
            font-size: 3rem;
            margin-bottom: 1.5rem;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--dark) 30%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-section p {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 2.5rem auto;
        }

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

        /* Data Badges */
        .data-badges {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 4rem;
        }

        .data-card {
            background-color: #FFFFFF;
            padding: 24px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
            border: 1px solid var(--border-color);
            transition: transform 0.3s;
        }

        .data-card:hover {
            transform: translateY(-5px);
        }

        .data-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
        }

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

        /* About Section */
        .about-section {
            background-color: #FFFFFF;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 1.8rem;
            margin-bottom: 1rem;
            color: var(--dark);
        }

        .about-content p {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

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

        .about-features li {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 500;
        }

        .about-features li::before {
            content: "✓";
            color: var(--secondary);
            font-weight: bold;
        }

        /* Services Cards Grid */
        .services-section {
            background-color: var(--light-bg);
        }

        .grid-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background-color: #FFFFFF;
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--primary);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 82, 255, 0.08);
        }

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

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

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

        /* Tag Cloud Components (Supported AIGC Platforms) */
        .platform-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 2rem;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .platform-tag {
            padding: 8px 16px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-main);
            transition: all 0.2s;
        }

        .platform-tag:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
            transform: scale(1.05);
        }

        /* Steps Timeline */
        .process-section {
            background-color: #FFFFFF;
        }

        .timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            margin-top: 3rem;
        }

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

        .step-number {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 700;
            margin: 0 auto 20px auto;
            position: relative;
            z-index: 2;
            box-shadow: 0 4px 10px rgba(0, 82, 255, 0.2);
        }

        .timeline-step h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

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

        /* Network Section */
        .network-section {
            background-color: var(--light-bg);
            text-align: center;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 2rem;
        }

        .network-card {
            background: #FFFFFF;
            padding: 30px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .network-card h3 {
            color: var(--primary);
            margin-bottom: 10px;
        }

        /* Comparison Table */
        .comparison-section {
            background-color: #FFFFFF;
        }

        .rating-badge {
            background: linear-gradient(135deg, #FFF9E6 0%, #FFF0C2 100%);
            border: 1px solid #FFE082;
            color: #D48800;
            padding: 15px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 2rem;
            text-align: left;
        }

        .rating-stars {
            color: #FFB000;
            font-size: 1.25rem;
        }

        .rating-score {
            font-size: 1.5rem;
            font-weight: 800;
        }

        .table-wrapper {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
            background-color: #FFFFFF;
        }

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

        th {
            background-color: var(--light-bg);
            font-weight: 600;
            color: var(--dark);
        }

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

        .col-highlight {
            background-color: rgba(0, 82, 255, 0.02);
            font-weight: 600;
        }

        .badge-yes {
            color: #00B074;
            font-weight: bold;
        }

        .badge-no {
            color: var(--text-muted);
        }

        /* Cases Grid */
        .cases-section {
            background-color: var(--light-bg);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .case-card {
            background-color: #FFFFFF;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }

        .case-image-wrapper {
            position: relative;
            background-color: #E2E8F0;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .case-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-content {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 4px 10px;
            font-size: 0.8rem;
            border-radius: 4px;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .case-content h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

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

        /* Token Price Reference Table */
        .pricing-section {
            background-color: #FFFFFF;
        }

        /* Training Program */
        .training-section {
            background-color: var(--light-bg);
        }

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

        .training-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 8px;
            text-align: center;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.05);
        }

        .training-cert {
            font-size: 0.8rem;
            color: var(--secondary);
            font-weight: bold;
            margin-top: 10px;
            text-transform: uppercase;
        }

        /* FAQ Accordion */
        .faq-section {
            background-color: #FFFFFF;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            user-select: none;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-top: 8px;
        }

        .faq-item.active .faq-answer {
            max-height: 1000px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: transform 0.3s;
        }

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

        /* Glossary Block */
        .glossary-section {
            background-color: var(--light-bg);
        }

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

        .glossary-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 8px;
        }

        .glossary-card h4 {
            color: var(--primary);
            margin-bottom: 5px;
        }

        /* Articles & Knowledge base */
        .articles-section {
            background-color: #FFFFFF;
        }

        .articles-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .article-card {
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 8px;
            transition: all 0.3s;
        }

        .article-card:hover {
            background-color: #FFFFFF;
            border-color: var(--primary);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        }

        .article-card a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: inline-block;
            margin-top: 10px;
        }

        /* Testimonials */
        .testimonials-section {
            background-color: var(--light-bg);
        }

        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .comment-card {
            background-color: #FFFFFF;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.01);
        }

        .comment-user {
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .comment-role {
            font-size: 0.8rem;
            color: var(--primary);
            margin-bottom: 15px;
        }

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

        /* Agent Program */
        .agent-section {
            background: linear-gradient(135deg, var(--dark) 0%, #002D9C 100%);
            color: #FFFFFF;
            text-align: center;
        }

        .agent-section h2 {
            background: none;
            -webkit-text-fill-color: initial;
            color: #FFFFFF;
        }

        .agent-section .section-desc {
            color: rgba(255, 255, 255, 0.8);
        }

        .agent-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .agent-card {
            background-color: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 24px;
            border-radius: 8px;
        }

        .agent-card h3 {
            color: var(--secondary);
            margin-bottom: 10px;
        }

        /* Contact & Form Section */
        .contact-section {
            background-color: #FFFFFF;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

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

        .contact-card p {
            margin-top: 5px;
        }

        .kefu-qrcode {
            max-width: 150px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-top: 10px;
        }

        /* Form Styling */
        form {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            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: 500;
            font-size: 0.95rem;
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        /* Footer */
        footer {
            background-color: var(--dark);
            color: #E2E8F0;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: #FFFFFF;
            margin-bottom: 15px;
        }

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

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

        .footer-links ul li a {
            color: #94A3B8;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-links ul li a:hover {
            color: #FFFFFF;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            text-align: center;
            color: #64748B;
        }

        .friendship-links {
            margin-top: 15px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            justify-content: center;
            font-size: 0.85rem;
        }

        .friendship-links a {
            color: #94A3B8;
            text-decoration: none;
            transition: color 0.2s;
        }

        .friendship-links a:hover {
            color: var(--secondary);
        }

        /* Float Customer Service */
        .float-bar {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-item {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
            transition: transform 0.3s, background-color 0.3s;
            cursor: pointer;
            position: relative;
        }

        .float-item:hover {
            transform: scale(1.1);
            background-color: #003cc4;
        }

        .float-item .popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: #FFFFFF;
            color: var(--text-main);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            display: none;
            width: 180px;
            text-align: center;
            border: 1px solid var(--border-color);
        }

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

        /* Mobile Responsive */
        @media (max-width: 1024px) {
            .data-badges {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
            .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .glossary-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .hero-section h1 { font-size: 2.2rem; }
            .about-grid, .contact-grid, .cases-grid, .agent-grid {
                grid-template-columns: 1fr;
            }
            .network-grid {
                grid-template-columns: 1fr;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #FFFFFF;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
                box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .timeline {
                grid-template-columns: 1fr;
            }
            .comments-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .glossary-grid {
                grid-template-columns: 1fr;
            }
        }