/* CSS Reset & Global Vars - 宝蓝明艳风 */
        :root {
            --primary: #0052FF;        /* 明艳蓝 */
            --primary-dark: #0A2540;   /* 深宝蓝 */
            --secondary: #00D4B2;      /* 青绿/薄荷绿 */
            --accent: #FFC700;         /* 警示/强调黄 */
            --bg-light: #F4F7FC;       /* 浅亮灰蓝 */
            --bg-white: #FFFFFF;
            --text-main: #1E293B;      /* 深灰字 */
            --text-muted: #64748B;    /* 浅灰字 */
            --border-color: #E2E8F0;
            --shadow: 0 10px 30px -10px rgba(10, 37, 64, 0.1);
            --transition: all 0.3s ease;
        }

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

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

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

        ul {
            list-style: none;
        }

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

        section {
            padding: 80px 0;
            position: relative;
        }

        /* Section Headings */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2rem;
            color: var(--primary-dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background: var(--primary);
            margin: 8px auto 0;
            border-radius: 2px;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto;
        }

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

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

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

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

        .nav-menu {
            display: flex;
            gap: 20px;
        }

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

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

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

        .btn {
            display: inline-block;
            padding: 10px 22px;
            border-radius: 6px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }

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

        .btn-primary:hover {
            background-color: #0043d0;
            transform: translateY(-2px);
        }

        .btn-secondary {
            background-color: var(--bg-white);
            color: var(--primary);
            border: 1px solid var(--primary);
        }

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

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
        }

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

        /* Hero Section (No Images!) */
        .hero {
            background: linear-gradient(135deg, #0A2540 0%, #001226 100%);
            color: var(--bg-white);
            padding: 120px 0 100px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0,82,255,0.15) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 10;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 25px;
            background: linear-gradient(to right, #FFFFFF, #B9D4FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.2rem;
            color: #A5B6CD;
            margin-bottom: 35px;
            line-height: 1.7;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 40px;
        }

        .hero-tag {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #E2E8F0;
        }

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

        .hero-btns .btn {
            padding: 14px 35px;
            font-size: 1.05rem;
        }

        /* Data Badges Section */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
            margin-top: -60px;
            position: relative;
            z-index: 20;
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: 8px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--primary);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 5px;
        }

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

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

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

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

        .about-points {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 25px;
        }

        .point-item {
            background: var(--bg-white);
            padding: 15px;
            border-radius: 6px;
            border-left: 3px solid var(--secondary);
            font-size: 0.9rem;
            font-weight: 600;
        }

        /* Grid Services / Capability Section */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .service-card {
            background-color: var(--bg-white);
            border-radius: 8px;
            padding: 35px 25px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }

        .service-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(0,82,255,0.08);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.25rem;
            color: var(--primary-dark);
            margin-bottom: 12px;
        }

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

        /* Solutions Grid */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .solution-card {
            background: var(--bg-white);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .solution-info {
            padding: 25px;
        }

        .solution-info h3 {
            font-size: 1.2rem;
            color: var(--primary-dark);
            margin-bottom: 10px;
        }

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

        /* Timeline Flow Section */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background-color: var(--primary);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            right: -8px;
            background-color: var(--bg-white);
            border: 4px solid var(--secondary);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }

        .left {
            left: 0;
            text-align: right;
        }

        .right {
            left: 50%;
        }

        .right::after {
            left: -8px;
        }

        .timeline-content {
            padding: 20px 30px;
            background-color: var(--bg-white);
            position: relative;
            border-radius: 6px;
            box-shadow: var(--shadow);
        }

        .timeline-content h3 {
            font-size: 1.15rem;
            color: var(--primary-dark);
            margin-bottom: 5px;
        }

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

        /* Compare Table Section */
        .table-responsive {
            overflow-x: auto;
            background-color: var(--bg-white);
            border-radius: 8px;
            box-shadow: var(--shadow);
            padding: 20px;
        }

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

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

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

        td {
            font-size: 0.95rem;
        }

        .text-center {
            text-align: center;
        }

        .badge-score {
            display: inline-block;
            background-color: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 1.1rem;
        }

        .check-icon {
            color: #10B981;
            font-weight: bold;
        }

        .cross-icon {
            color: #EF4444;
            font-weight: bold;
        }

        /* Token Price Section */
        .token-showcase {
            background: linear-gradient(135deg, #0A2540 0%, #00234a 100%);
            color: var(--bg-white);
            padding: 60px 0;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }

        .token-models {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            margin-top: 30px;
        }

        .token-tag {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 4px;
            padding: 8px 18px;
            font-size: 0.9rem;
            color: #CCD6E0;
        }

        /* Network & Training */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .training-card {
            background: var(--bg-white);
            border-radius: 8px;
            padding: 30px 20px;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--secondary);
            text-align: center;
        }

        .training-card h3 {
            font-size: 1.2rem;
            color: var(--primary-dark);
            margin-bottom: 12px;
        }

        .training-card .meta {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: bold;
            margin-bottom: 10px;
        }

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

        .faq-item {
            background: var(--bg-white);
            border-radius: 6px;
            margin-bottom: 15px;
            box-shadow: var(--shadow);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .faq-question {
            padding: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

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

        .faq-item.active .faq-question::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-bottom: 20px;
        }

        /* Reviews Section */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 25px;
        }

        .review-card {
            background: var(--bg-white);
            border-radius: 8px;
            padding: 25px;
            box-shadow: var(--shadow);
            position: relative;
        }

        .review-card::before {
            content: '“';
            position: absolute;
            top: 10px;
            right: 20px;
            font-size: 4rem;
            color: rgba(0,82,255,0.08);
            line-height: 1;
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--text-main);
            margin-bottom: 15px;
            position: relative;
            z-index: 2;
        }

        .reviewer-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .reviewer-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-dark);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .reviewer-details h4 {
            font-size: 0.9rem;
            color: var(--primary-dark);
        }

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

        /* Contact & Form Section */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info h3 {
            font-size: 1.5rem;
            color: var(--primary-dark);
            margin-bottom: 20px;
        }

        .contact-list {
            margin-bottom: 30px;
        }

        .contact-list li {
            margin-bottom: 12px;
            font-size: 1rem;
        }

        .contact-qr {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .qr-box {
            text-align: center;
        }

        .qr-box img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 5px;
            background: #fff;
        }

        .qr-box p {
            font-size: 0.85rem;
            margin-top: 5px;
            color: var(--text-muted);
        }

        /* Form */
        .contact-form {
            background: var(--bg-white);
            padding: 40px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary-dark);
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 0.95rem;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0,82,255,0.1);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }

        /* Encyclopedia & Articles */
        .encyclopedia-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
            margin-bottom: 50px;
        }

        .term-card {
            background: var(--bg-white);
            border-radius: 6px;
            padding: 20px;
            box-shadow: var(--shadow);
        }

        .term-card h4 {
            color: var(--primary);
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .term-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .articles-list {
            background: var(--bg-white);
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }

        .articles-list h3 {
            margin-bottom: 20px;
            color: var(--primary-dark);
        }

        .article-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 15px;
        }

        .article-links a {
            display: block;
            padding: 10px 15px;
            background-color: var(--bg-light);
            border-radius: 4px;
            font-size: 0.9rem;
            color: var(--primary-dark);
            text-align: center;
        }

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

        /* Banner Gallery (Section with Image) */
        .banner-gallery {
            background-color: var(--bg-white);
            padding: 60px 0;
        }

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

        .ai-page-image {
            max-width: 100%;
            height: auto;
            border-radius: 6px;
            box-shadow: var(--shadow);
        }

        .banner-item {
            flex: 1 1 300px;
            max-width: 380px;
            text-align: center;
        }

        .banner-item p {
            margin-top: 10px;
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Footer & Friendly Links */
        footer {
            background-color: var(--primary-dark);
            color: #CCD6E0;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            margin-bottom: 20px;
        }

        .footer-logo img {
            height: 38px;
            
        }

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

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

        .footer-links ul li a:hover {
            color: var(--secondary);
        }

        .friend-links {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            margin-top: 20px;
        }

        .friend-links-title {
            color: #fff;
            font-size: 0.9rem;
            margin-bottom: 10px;
            font-weight: 600;
        }

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

        .friend-links-items a {
            color: #8C9BAE;
            font-size: 0.85rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.8rem;
            color: #8C9BAE;
        }

        /* Floating Contact widget */
        .floating-widget {
            position: fixed;
            bottom: 40px;
            right: 20px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .widget-item {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

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

        .widget-qr-pop {
            display: none;
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 10px;
            box-shadow: var(--shadow);
            text-align: center;
        }

        .widget-qr-pop img {
            width: 120px;
            height: 120px;
        }

        .widget-qr-pop p {
            color: var(--text-main);
            font-size: 0.8rem;
            margin-top: 5px;
            white-space: nowrap;
        }

        .widget-item:hover .widget-qr-pop {
            display: block;
        }

        /* Responsive Breakpoints */
        @media (max-width: 992px) {
            .about-grid, .contact-layout, .footer-grid {
                grid-template-columns: 1fr;
            }
            
            .timeline::after {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
                text-align: left !important;
            }
            .timeline-item::after {
                left: 12px;
                right: auto;
            }
            .left {
                left: 0;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #fff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
                box-shadow: var(--shadow);
            }

            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .hero h1 {
                font-size: 2.1rem;
            }

            .hero-btns {
                flex-direction: column;
                gap: 12px;
            }
        }