/* CSS Reset & Variables */
        :root {
            --primary: #0066FF;
            --primary-hover: #0052CC;
            --secondary: #00E5FF;
            --dark: #1E293B;
            --light: #F8FAFC;
            --border: #E2E8F0;
            --text-main: #334155;
            --text-muted: #64748B;
            --accent: #FF6B00;
            --success: #10B981;
            --bg-gradient: linear-gradient(135deg, #F0F7FF 0%, #FFFFFF 50%, #E6FFF9 100%);
            --card-shadow: 0 10px 30px -10px rgba(0, 102, 255, 0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            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;
            background: var(--bg-gradient);
            background-attachment: fixed;
        }

        /* Utility Classes */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
        }

        .section-title {
            text-align: center;
            font-size: 2.25rem;
            color: var(--dark);
            margin-bottom: 16px;
            font-weight: 700;
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            margin: 12px auto 0;
            border-radius: 2px;
        }

        .section-desc {
            text-align: center;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 50px;
            font-size: 1.1rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #0052cc);
            color: white;
            box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
        }

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

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

        /* Header & Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: var(--transition);
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

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

        .brand-name {
            font-size: 1.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            padding: 8px 12px;
            border-radius: 6px;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(0, 102, 255, 0.05);
        }

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

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

        /* Hero Section (No Image) */
        .hero {
            padding: 160px 0 100px;
            position: relative;
            background: radial-gradient(circle at 80% 20%, rgba(0, 229, 255, 0.15), transparent 40%),
                        radial-gradient(circle at 10% 80%, rgba(0, 102, 255, 0.1), transparent 40%);
        }

        .hero-content {
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(0, 102, 255, 0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 24px;
            border: 1px solid rgba(0, 102, 255, 0.15);
        }

        .hero h1 {
            font-size: 3rem;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .hero h1 span {
            background: linear-gradient(135deg, var(--primary) 30%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .hero-btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-bottom: 60px;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            max-width: 750px;
            margin: 0 auto;
            background: white;
            padding: 24px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border);
        }

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

        .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* About Us & Platform Intro */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .about-text p {
            color: var(--text-main);
            margin-bottom: 20px;
            font-size: 1.05rem;
            line-height: 1.8;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feat-item {
            background: white;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
        }

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

        .about-feat-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* Cloud Tag & AIGC Services */
        .tags-wrapper {
            background: white;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            margin-bottom: 40px;
        }

        .tags-title {
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-weight: 600;
        }

        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .cloud-tag {
            padding: 8px 16px;
            background: var(--light);
            border: 1px solid var(--border);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-main);
            transition: var(--transition);
            cursor: default;
        }

        .cloud-tag:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-6px);
            border-color: var(--primary);
            box-shadow: 0 15px 35px -10px rgba(0, 102, 255, 0.15);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background: rgba(0, 102, 255, 0.08);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .service-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* One-stop Production & Workflow */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
            position: relative;
        }

        .workflow-step {
            background: white;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 16px;
        }

        .workflow-step h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 8px;
        }

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

        /* Technical Standards */
        .tech-standards {
            margin-top: 50px;
            background: white;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border);
        }

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

        .standard-item h5 {
            color: var(--dark);
            font-size: 1.1rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .standard-item h5::before {
            content: "✓";
            color: var(--success);
            font-weight: bold;
        }

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

        /* Solutions & Service Network */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: white;
            border-radius: 16px;
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

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

        .solution-body {
            padding: 24px;
        }

        .solution-body h4 {
            font-size: 1.2rem;
            color: var(--dark);
            margin-bottom: 12px;
        }

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

        .network-map {
            margin-top: 60px;
            background: white;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border);
            text-align: center;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .network-city {
            background: var(--light);
            padding: 12px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 600;
        }

        /* Comparison Section & Token Compare */
        .compare-table-wrapper {
            background: white;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            overflow-x: auto;
            margin-bottom: 50px;
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border);
        }

        .compare-table th {
            background: var(--light);
            font-weight: 700;
            color: var(--dark);
        }

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

        .recommend-badge {
            background: linear-gradient(135deg, var(--accent), #FF8C00);
            color: white;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 700;
        }

        /* Token Price Reference Table */
        .token-price-wrapper {
            background: white;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            overflow-x: auto;
        }

        .token-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .token-table th, .token-table td {
            padding: 14px 20px;
            border-bottom: 1px solid var(--border);
            text-align: center;
        }

        .token-table th {
            background: rgba(0, 102, 255, 0.05);
            color: var(--primary);
            font-weight: 700;
        }

        /* Professional & AI Training */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }

        .train-card {
            background: white;
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            text-align: center;
            transition: var(--transition);
        }

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

        .train-icon {
            font-size: 2rem;
            margin-bottom: 16px;
            display: inline-block;
        }

        .train-card h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

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

        /* Case Studies & Media Section */
        .media-grid {
            display: grid;
            grid-template-columns: 2fr 1.2fr;
            gap: 30px;
            margin-bottom: 50px;
        }

        .media-main {
            background: white;
            border-radius: 16px;
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .media-main img {
            width: 100%;
            height: auto;
            display: block;
        }

        .media-info {
            padding: 24px;
        }

        .media-side {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .media-side-card {
            background: white;
            border-radius: 16px;
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .media-side-card img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* News & Knowledge base */
        .news-section {
            background: white;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border);
            margin-bottom: 50px;
        }

        .news-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .news-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 15px;
            border-bottom: 1px dashed var(--border);
        }

        .news-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .news-title-link {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 500;
            transition: var(--transition);
        }

        .news-title-link:hover {
            color: var(--primary);
        }

        .news-tag {
            background: var(--light);
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* Terminology Encyclopedia */
        .encyclopedia-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .enc-item {
            background: white;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border);
        }

        .enc-item h5 {
            color: var(--primary);
            font-size: 1rem;
            margin-bottom: 8px;
        }

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

        /* Testimonials (6 reviews) */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            position: relative;
        }

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

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

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }

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

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

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

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

        .faq-question {
            padding: 20px;
            font-weight: 600;
            color: var(--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(--text-muted);
            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;
            background: var(--light);
        }

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

        /* Contact & Form & Partner */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 60px;
        }

        .form-card {
            background: white;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            outline: none;
            font-family: inherit;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
        }

        .contact-info-card {
            background: white;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--card-shadow);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .qr-codes {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 30px;
        }

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

        .qr-item img {
            width: 140px;
            height: 140px;
            border-radius: 8px;
            border: 1px solid var(--border);
            padding: 4px;
            background: white;
        }

        .qr-item p {
            margin-top: 8px;
            font-size: 0.85rem;
            color: var(--text-main);
            font-weight: 600;
        }

        .agent-banner {
            margin-top: 50px;
            background: linear-gradient(135deg, var(--dark) 0%, #0F172A 100%);
            color: white;
            padding: 40px;
            border-radius: 16px;
            text-align: center;
        }

        .agent-banner h4 {
            font-size: 1.5rem;
            margin-bottom: 12px;
            color: var(--secondary);
        }

        .agent-banner p {
            max-width: 600px;
            margin: 0 auto 24px;
            font-size: 0.95rem;
            color: var(--border);
        }

        /* Footer */
        footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 60px 0 20px;
            border-top: 1px solid #1E293B;
        }

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

        .footer-col h5 {
            color: white;
            font-size: 1.1rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: #94A3B8;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friend-links a {
            color: #94A3B8;
            text-decoration: none;
            font-size: 0.85rem;
            background: #1E293B;
            padding: 6px 12px;
            border-radius: 4px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
        }

        /* Float Widget */
        .float-widget {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .widget-item {
            width: 50px;
            height: 50px;
            background: white;
            border-radius: 50%;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

        .widget-item:hover {
            transform: scale(1.1);
            background: var(--primary);
            color: white;
        }

        .widget-item svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .widget-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: white;
            padding: 16px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            display: none;
            text-align: center;
            width: 180px;
            border: 1px solid var(--border);
        }

        .widget-popover img {
            width: 140px;
            height: 140px;
            margin-bottom: 8px;
        }

        .widget-popover p {
            font-size: 0.8rem;
            color: var(--dark);
            margin: 0;
            font-weight: 600;
        }

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

        /* Responsive Design */
        @media (max-width: 1024px) {
            .about-grid, .contact-grid, .media-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .testimonials-grid, .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .workflow-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: white;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--card-shadow);
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero-stats {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            .standards-grid, .testimonials-grid, .solutions-grid, .network-grid {
                grid-template-columns: 1fr;
            }
            .workflow-timeline {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }