:root {
            --primary-gradient: linear-gradient(135deg, #4f46e5, #7c3aed, #db2777);
            --primary-color: #6366f1;
            --accent-pink: #ec4899;
            --accent-purple: #8b5cf6;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --success-color: #10b981;
            --container-width: 1200px;
        }

        * {
            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-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--accent-pink);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        /* Header & Navigation */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(8px);
        }

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

        .logo-container {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-container img {
            max-height: 40px;
        }

        .logo-text {
            font-size: 1.25rem;
            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;
            align-items: center;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
        }

        .nav-link:hover {
            color: var(--primary-color);
            background-color: rgba(99, 102, 241, 0.05);
        }

        .btn-register {
            background: var(--primary-gradient);
            color: #fff !important;
            padding: 10px 20px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.25);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .btn-register:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(124, 58, 237, 0.35);
        }

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

        /* Hero Section (No image as requested) */
        .hero-section {
            padding: 100px 0 80px;
            background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, rgba(236, 72, 153, 0.05) 90.2%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 40%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background: linear-gradient(90deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
            color: var(--primary-color);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(99, 102, 241, 0.2);
        }

        .hero-title {
            font-size: 2.8rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 24px;
        }

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

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1.05rem;
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
            color: #fff;
        }

        .btn-secondary {
            background: var(--bg-white);
            color: var(--text-dark);
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1.05rem;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

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

        /* Data Stats Cards */
        .stats-section {
            padding: 40px 0;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

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

        .stat-card {
            background: var(--bg-white);
            padding: 24px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            text-align: center;
            border-top: 4px solid var(--primary-color);
            transition: transform 0.3s;
        }

        .stat-card:nth-child(2) { border-top-color: var(--accent-purple); }
        .stat-card:nth-child(3) { border-top-color: var(--accent-pink); }
        .stat-card:nth-child(4) { border-top-color: #3b82f6; }

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

        .stat-val {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

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

        /* Section Global Styles */
        section.section-pad {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }

        .section-subtitle {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--accent-pink);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 12px;
            display: block;
        }

        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--text-dark);
        }

        /* About Section (Platform Intro) */
        .about-section {
            background-color: var(--bg-white);
        }

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

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

        .about-feat-item {
            padding: 20px;
            background-color: var(--bg-light);
            border-radius: 12px;
            border-left: 4px solid var(--accent-purple);
        }

        .about-feat-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .about-feat-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* Services Grid */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--bg-white);
            padding: 32px 24px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

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

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(99, 102, 241, 0.08);
            border-color: transparent;
        }

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

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

        .service-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Supported Models Tag Cloud */
        .models-cloud {
            margin-top: 40px;
            background: var(--bg-white);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .models-cloud h4 {
            font-size: 1.1rem;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

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

        .tag-item {
            background-color: var(--bg-light);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: all 0.2s;
        }

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

        /* One-stop Production Section */
        .production-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .prod-step-card {
            background-color: var(--bg-white);
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .prod-step-num {
            position: absolute;
            top: -15px;
            left: 20px;
            width: 36px;
            height: 36px;
            background: var(--primary-gradient);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        }

        .prod-step-title {
            margin-top: 10px;
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* Timeline Component for Training */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 40px auto 0;
            padding-left: 30px;
            border-left: 2px dashed var(--border-color);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 30px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -37px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: var(--accent-pink);
            border: 4px solid var(--bg-light);
        }

        .timeline-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

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

        /* Comparison Table Section */
        .comparison-table-wrapper {
            background-color: var(--bg-white);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: 0 15px 40px rgba(0,0,0,0.02);
            overflow-x: auto;
        }

        .comparison-badge {
            background: linear-gradient(135deg, #10b981 0%, #059669 100%);
            color: #fff;
            padding: 10px 20px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 24px;
            font-weight: 600;
        }

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

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

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

        .comp-table tr:hover td {
            background-color: rgba(99, 102, 241, 0.02);
        }

        .text-highlight {
            color: var(--accent-pink);
            font-weight: 700;
        }

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

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

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

        .case-img-holder {
            background-color: #f1f5f9;
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-tag {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary-color);
            background-color: rgba(99,102,241,0.08);
            padding: 4px 10px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 12px;
        }

        .case-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .case-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* Token Price Comparison Table */
        .token-price-wrapper {
            background-color: var(--bg-white);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            margin-top: 40px;
        }

        .token-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 20px;
        }

        .token-header {
            background-color: var(--bg-light);
            font-weight: 700;
        }

        .token-grid div {
            display: flex;
            align-items: center;
        }

        /* User Reviews Section */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: var(--bg-white);
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
        }

        .review-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-style: italic;
            margin-bottom: 20px;
            position: relative;
        }

        .review-text::before {
            content: '“';
            font-size: 2.5rem;
            color: rgba(99,102,241,0.15);
            position: absolute;
            top: -20px;
            left: -10px;
        }

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

        .review-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
        }

        .review-meta h5 {
            font-size: 0.95rem;
            font-weight: 700;
        }

        .review-meta p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* FAQ Accordion Component */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
        }

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

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            user-select: none;
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: transform 0.3s;
            color: var(--primary-color);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 24px;
            background-color: #fafafa;
        }

        .faq-body-content {
            padding-bottom: 20px;
            padding-top: 10px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

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

        .faq-item.active .faq-body {
            max-height: 200px;
        }

        /* Articles Section */
        .articles-wrapper {
            background: var(--bg-white);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 30px;
        }

        .articles-list {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .article-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 12px;
            border-radius: 8px;
            transition: background-color 0.2s;
        }

        .article-item:hover {
            background-color: var(--bg-light);
        }

        .article-bullet {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--accent-pink);
            margin-top: 8px;
        }

        .article-link {
            font-size: 0.95rem;
            color: var(--text-dark);
            font-weight: 500;
        }

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

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

        .contact-info {
            background-color: var(--bg-white);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
        }

        .contact-list {
            list-style: none;
            margin-top: 30px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 24px;
        }

        .contact-icon {
            font-size: 1.5rem;
            color: var(--primary-color);
            background-color: rgba(99,102,241,0.08);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .contact-det h5 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

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

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

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

        .qr-item img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Contact Form */
        .form-card {
            background: var(--bg-white);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.01);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            font-family: inherit;
            font-size: 0.9rem;
            transition: border-color 0.3s;
            background-color: var(--bg-light);
        }

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

        /* Floating Widgets */
        .float-widget {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: var(--bg-white);
            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;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .float-btn:hover {
            background: var(--primary-gradient);
            color: #fff;
            transform: scale(1.05);
        }

        .float-btn svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--bg-white);
            padding: 16px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            border: 1px solid var(--border-color);
            display: none;
            text-align: center;
            width: 160px;
        }

        .qr-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .qr-popover p {
            font-size: 0.75rem;
            color: var(--text-dark);
        }

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

        /* Footer */
        footer {
            background-color: #0f172a;
            color: #cbd5e1;
            padding: 60px 0 30px;
            font-size: 0.85rem;
        }

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

        .footer-logo {
            margin-bottom: 16px;
        }

        .footer-logo img {
            max-height: 40px;
            
        }

        .footer-title {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            transition: color 0.2s;
        }

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

        .friend-links-wrap {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
        }

        .friend-links-title {
            color: #fff;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

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

        .friend-links a {
            color: #64748b;
            font-size: 0.8rem;
        }

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

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid #1e293b;
            text-align: center;
            color: #64748b;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .production-steps, .cases-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .contact-grid, .about-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--bg-white);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 16px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }

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

            .nav-toggle {
                display: block;
            }

            .hero-title {
                font-size: 2rem;
            }

            .stats-grid, .services-grid, .production-steps, .cases-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }

            .articles-list {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }
        }