:root {
            --primary: #6366f1;
            --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
            --secondary: #0ea5e9;
            --dark: #0f172a;
            --light-bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #334155;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --accent: #f59e0b;
            --container-width: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background-color: var(--light-bg);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        /* Container Layout */
        .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);
        }

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

        .section-header h2 {
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 15px;
            font-weight: 800;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 30px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 9999px;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
        }

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

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

        /* Header & Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 70px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            z-index: 1000;
            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;
        }

        .brand-name {
            font-size: 1.3rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-menu a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
        }

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

        .nav-btn {
            display: flex;
            align-items: center;
            gap: 15px;
        }

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

        /* Hero Section (No Image) */
        .hero {
            padding-top: 150px;
            padding-bottom: 100px;
            background: radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.15) 0%, rgba(236, 72, 153, 0.05) 50%, rgba(248, 250, 252, 0) 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 40%;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.1) 0%, transparent 70%);
            z-index: 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary);
            border-radius: 9999px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 25px;
            border: 1px solid rgba(99, 102, 241, 0.2);
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 25px;
            letter-spacing: -0.02em;
            position: relative;
            z-index: 1;
        }

        .hero h1 span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px auto;
            position: relative;
            z-index: 1;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            position: relative;
            z-index: 1;
        }

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 25px;
            transition: all 0.3s ease;
        }

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

        .stat-card .number {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .stat-card .label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Service Cards */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 35px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary-gradient);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }

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

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.05);
        }

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

        .service-card h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 15px;
            font-weight: 700;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        .service-features {
            list-style: none;
            font-size: 0.85rem;
            color: var(--text-main);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .service-features li {
            background: var(--light-bg);
            padding: 4px 10px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
        }

        /* Custom Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 900px;
            margin: 30px auto 0 auto;
        }

        .tag-cloud span {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 8px 18px;
            border-radius: 9999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-main);
            transition: all 0.3s ease;
        }

        .tag-cloud span:hover {
            background: var(--primary-gradient);
            color: #ffffff;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* About Section (with images) */
        .about-layout {
            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(--text-main);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .about-images {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .about-images img {
            width: 100%;
            border-radius: 12px;
            object-fit: cover;
            box-shadow: 0 8px 20px rgba(0,0,0,0.08);
            transition: transform 0.3s ease;
        }

        .about-images img:hover {
            transform: scale(1.03);
        }

        .image-span-2 {
            grid-column: span 2;
        }

        /* Timeline & AIGC Steps */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--border-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 20px 40px;
            box-sizing: border-box;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background: #ffffff;
            border: 4px solid var(--primary);
            border-radius: 50%;
            top: 25px;
            z-index: 1;
        }

        .timeline-item:nth-child(odd)::after {
            right: -12px;
        }

        .timeline-item:nth-child(even)::after {
            left: -12px;
        }

        .timeline-content {
            background: var(--card-bg);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .timeline-content h4 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 8px;
        }

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

        /* Compare Section */
        .compare-table-wrapper {
            overflow-x: auto;
            background: var(--card-bg);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 8px 30px rgba(0,0,0,0.02);
        }

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

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

        th {
            background-color: #f1f5f9;
            color: var(--dark);
            font-weight: 700;
        }

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

        .rating-badge {
            background: #fef3c7;
            color: #d97706;
            padding: 4px 10px;
            border-radius: 6px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .highlight-row {
            background-color: rgba(99, 102, 241, 0.03);
        }

        /* Grid for Cards - Training & Network */
        .network-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .network-card {
            background: var(--card-bg);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .network-card h4 {
            font-size: 1.2rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        /* Token Table Info */
        .token-header-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            flex-wrap: wrap;
            gap: 15px;
        }

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

        .comment-card {
            background: var(--card-bg);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .comment-card::after {
            content: '“';
            position: absolute;
            top: 20px;
            right: 30px;
            font-size: 4rem;
            color: rgba(99, 102, 241, 0.1);
            font-family: serif;
            line-height: 1;
        }

        .comment-text {
            color: var(--text-main);
            font-size: 0.95rem;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .comment-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .comment-info h5 {
            color: var(--dark);
            font-weight: 700;
            font-size: 0.95rem;
        }

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

        /* FAQ Section */
        .faq-accordion {
            max-width: 850px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-question {
            padding: 20px 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--dark);
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background: #fafbfd;
        }

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

        .faq-answer-content {
            padding: 20px 25px;
            border-top: 1px solid var(--border-color);
            color: var(--text-main);
            font-size: 0.95rem;
        }

        /* Articles Section */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .article-card {
            background: var(--card-bg);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

        .article-content {
            padding: 25px;
        }

        .article-tag {
            display: inline-block;
            background: rgba(99, 102, 241, 0.08);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .article-card h3 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        .article-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* Contact & Form Grid */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .contact-form-card {
            background: var(--card-bg);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

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

        .form-group.full-width {
            grid-column: span 2;
        }

        .form-group label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
        }

        .form-group input, .form-group select, .form-group textarea {
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            color: var(--text-main);
            background: #ffffff;
            outline: none;
            transition: all 0.3s ease;
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        .contact-info-panel {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .info-item {
            display: flex;
            gap: 15px;
        }

        .info-icon {
            width: 50px;
            height: 50px;
            background: var(--primary-gradient);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .info-details h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

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

        .qr-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .qr-card img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            object-fit: cover;
        }

        /* Footer */
        footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

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

        .footer-logo h3 {
            color: #ffffff;
            font-size: 1.4rem;
            margin-bottom: 15px;
        }

        .footer-logo p {
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .footer-links h4 {
            color: #ffffff;
            font-size: 1rem;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .footer-contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

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

        .friend-links a {
            color: #64748b;
        }

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

        /* Float Widget */
        .float-widget {
            position: fixed;
            bottom: 40px;
            right: 40px;
            display: flex;
            flex-direction: column;
            gap: 15px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: #ffffff;
            border-radius: 50%;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
        }

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

        .float-btn .tooltip {
            position: absolute;
            right: 65px;
            top: 50%;
            transform: translateY(-50%) scale(0.9);
            background: var(--dark);
            color: #ffffff;
            padding: 8px 15px;
            border-radius: 6px;
            font-size: 0.85rem;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s ease;
        }

        .float-btn:hover .tooltip {
            opacity: 1;
            transform: translateY(-50%) scale(1);
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.15);
            display: none;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .float-btn:hover .qr-popover {
            display: flex;
        }

        .qr-popover img {
            width: 120px;
            height: 120px;
            border-radius: 6px;
        }

        .qr-popover span {
            font-size: 0.8rem;
            color: var(--dark);
            font-weight: 600;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid, .network-grid, .comment-grid, .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                display: none;
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-btn {
                display: none;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .about-layout, .contact-layout {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
                text-align: left !important;
            }
            .timeline-item::after {
                left: 10px !important;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
            .service-grid, .network-grid, .comment-grid, .article-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
        }