:root {
            --primary: #4f46e5;
            --primary-bright: #6366f1;
            --secondary: #ec4899;
            --accent: #06b6d4;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --border: #e2e8f0;
            --gradient: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #06b6d4 100%);
            --gradient-soft: linear-gradient(135deg, #f5f3ff 0%, #fdf2f8 50%, #ecfeff 100%);
            --shadow: 0 10px 30px -10px rgba(0,0,0,0.08);
            --shadow-hover: 0 20px 40px -15px rgba(79, 70, 229, 0.15);
        }

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

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

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

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 99px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
            border: none;
        }

        .btn-gradient {
            background: var(--gradient);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
        }

        .btn-gradient:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(79, 70, 229, 0.4);
        }

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

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

        /* Navigation */
        header {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border);
            transition: all 0.3s ease;
        }

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

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

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

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

        .nav-links a {
            color: var(--gray);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.9rem;
            transition: color 0.3s;
        }

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

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

        /* Hero Section (No Image) */
        .hero {
            position: relative;
            padding: 100px 0;
            background: var(--gradient-soft);
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 50%;
            background: radial-gradient(circle, rgba(236,72,153,0.15) 0%, rgba(255,255,255,0) 70%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            right: -10%;
            width: 40%;
            height: 50%;
            background: radial-gradient(circle, rgba(6,182,212,0.15) 0%, rgba(255,255,255,0) 70%);
            z-index: 1;
        }

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

        .hero-tag {
            display: inline-block;
            background: linear-gradient(135deg, rgba(79,70,229,0.1) 0%, rgba(236,72,153,0.1) 100%);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 99px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 20px;
        }

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

        .hero p {
            font-size: 1.1rem;
            color: var(--gray);
            margin-bottom: 40px;
            line-height: 1.8;
        }

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

        /* Stats Cards */
        .stats-section {
            margin-top: -40px;
            position: relative;
            z-index: 5;
        }

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

        .stat-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: transform 0.3s, box-shadow 0.3s;
        }

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

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--gray);
            font-weight: 500;
        }

        /* Standard Section */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 600px;
            margin: 0 auto 50px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .section-header p {
            font-size: 0.95rem;
            color: var(--gray);
        }

        /* Platform Introduction Section */
        .intro-bg {
            background: #ffffff;
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }
        .intro-content h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 15px;
        }
        .intro-content p {
            color: var(--gray);
            margin-bottom: 20px;
        }
        .intro-features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }
        .intro-feat-item {
            background: var(--light);
            padding: 15px;
            border-radius: 8px;
            border-left: 3px solid var(--accent);
            font-size: 0.9rem;
            font-weight: 500;
        }
        .intro-img-area {
            position: relative;
        }

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

        .service-card {
            background: #ffffff;
            border-radius: 20px;
            padding: 30px;
            border: 1px solid var(--border);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

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

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

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

        .service-icon {
            font-size: 2.2rem;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 15px;
        }

        .service-tag {
            display: inline-block;
            background: var(--light);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            color: var(--primary);
            font-weight: 600;
        }

        /* Model Clouds (Tag Cloud Style) */
        .model-cloud {
            margin-top: 40px;
            background: #ffffff;
            border-radius: 16px;
            padding: 30px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            text-align: center;
        }

        .model-cloud-title {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--gray);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

        .model-tag {
            background: var(--light);
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 99px;
            font-size: 0.85rem;
            color: var(--dark);
            font-weight: 500;
            transition: all 0.2s;
        }

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

        /* Flow & Tech Section */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .flow-step {
            background: #ffffff;
            padding: 30px 20px;
            border-radius: 16px;
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .flow-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--gradient);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 20px;
        }

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

        .flow-step p {
            font-size: 0.85rem;
            color: var(--gray);
        }

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

        .case-card {
            background: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all 0.3s;
        }

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

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #eaeaea;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-category {
            font-size: 0.75rem;
            color: var(--secondary);
            font-weight: 700;
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }

        .case-info h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .case-info p {
            font-size: 0.85rem;
            color: var(--gray);
            margin-bottom: 15px;
        }

        /* Comparison Section */
        .comparison-table-wrapper {
            background: #ffffff;
            border-radius: 16px;
            overflow-x: auto;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

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

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

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

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

        .comparison-table tr.highlight {
            background: rgba(79, 70, 229, 0.02);
        }

        .comparison-badge {
            background: linear-gradient(135deg, #10b981 0%, #059669 100%);
            color: #ffffff;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .rating-box {
            background: var(--gradient-soft);
            border: 1px dashed var(--primary);
            padding: 20px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: space-around;
            margin-top: 30px;
            text-align: center;
        }

        .rating-item h4 {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 5px;
        }

        .rating-val {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
        }

        /* Token Price Section */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .price-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border);
            text-align: center;
            transition: all 0.3s;
        }

        .price-card.featured {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: scale(1.03);
        }

        .price-card h3 {
            font-size: 1.25rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .price-cost {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .price-cost span {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--gray);
        }

        .price-features {
            list-style: none;
            margin-bottom: 30px;
            text-align: left;
        }

        .price-features li {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .price-features li::before {
            content: "✓";
            color: #10b981;
            font-weight: bold;
        }

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

        .training-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

        .training-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .training-cert {
            font-size: 0.75rem;
            color: var(--accent);
            font-weight: 700;
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }

        .training-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .training-card p {
            font-size: 0.85rem;
            color: var(--gray);
            margin-bottom: 20px;
        }

        .training-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--dark);
            font-weight: 600;
            border-top: 1px solid var(--border);
            padding-top: 15px;
        }

        /* FAQ Accordion */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

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

        .faq-trigger {
            width: 100%;
            padding: 20px 24px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .faq-item.active .faq-trigger::after {
            content: "-";
        }

        .faq-content {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--gray);
            font-size: 0.9rem;
        }

        .faq-item.active .faq-content {
            padding: 0 24px 20px 24px;
            max-height: 200px;
        }

        /* AI Encyclopedia Section */
        .terms-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 15px;
        }
        .term-card {
            background: #ffffff;
            padding: 20px;
            border-radius: 10px;
            border: 1px solid var(--border);
        }
        .term-card h4 {
            color: var(--primary);
            margin-bottom: 8px;
            font-size: 1rem;
        }
        .term-card p {
            font-size: 0.8rem;
            color: var(--gray);
        }

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

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

        .review-rating {
            color: #f59e0b;
            margin-bottom: 15px;
        }

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

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

        .author-info h4 {
            font-size: 0.9rem;
            color: var(--dark);
        }

        .author-info span {
            font-size: 0.75rem;
            color: var(--gray);
        }

        /* Articles Section */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }
        .article-card {
            background: #ffffff;
            border-radius: 10px;
            padding: 15px;
            border: 1px solid var(--border);
            transition: all 0.3s;
        }
        .article-card:hover {
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .article-card h4 {
            font-size: 0.85rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .article-card h4 a {
            color: var(--dark);
            text-decoration: none;
        }
        .article-card h4 a:hover {
            color: var(--primary);
        }
        .article-meta {
            font-size: 0.75rem;
            color: var(--gray);
        }

        /* Form Area */
        .form-section {
            background: var(--gradient-soft);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
        }

        .contact-info-panel h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .contact-info-panel p {
            color: var(--gray);
            margin-bottom: 30px;
        }

        .contact-channels {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 30px;
        }

        .channel-item {
            background: #ffffff;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border);
            text-align: center;
        }

        .channel-qr {
            width: 100px;
            height: 100px;
            margin: 10px auto 0;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .channel-qr img {
            max-width: 100%;
            height: auto;
        }

        .form-wrapper {
            background: #ffffff;
            padding: 40px;
            border-radius: 20px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

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

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

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

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            background-size: 14px;
        }

        /* Footer */
        footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.85rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
            border-bottom: 1px solid #334155;
            padding-bottom: 40px;
        }

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

        .footer-logo img {
            height: 35px;
            
        }

        .footer-col h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

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

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

        .footer-col ul li a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-col ul li a:hover {
            color: #ffffff;
        }

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

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        /* Float Widget */
        .float-widget {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #ffffff;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: relative;
            transition: all 0.3s;
            border: 1px solid var(--border);
        }

        .float-btn:hover {
            transform: translateY(-3px);
            background: var(--light);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: var(--primary);
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #ffffff;
            padding: 15px;
            border-radius: 12px;
            box-shadow: var(--shadow-hover);
            border: 1px solid var(--border);
            display: none;
            text-align: center;
            width: 140px;
        }

        .qr-popover img {
            width: 100px;
            height: 100px;
            margin-bottom: 8px;
        }

        .qr-popover span {
            font-size: 0.75rem;
            color: var(--dark);
            display: block;
        }

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

        /* Responsive Layouts */
        @media (max-width: 1024px) {
            .stats-grid, .services-grid, .cases-grid, .reviews-grid, .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .articles-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .flow-grid, .terms-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid, .form-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

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

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

            .nav-toggle {
                display: block;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .stats-grid, .services-grid, .cases-grid, .reviews-grid, .training-grid, .price-grid, .flow-grid, .terms-grid, .articles-grid {
                grid-template-columns: 1fr;
            }

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