/* CSS reset & variables */
        :root {
            --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
            --primary-color: #6366f1;
            --secondary-color: #ec4899;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 10px 25px -5px rgba(99, 102, 241, 0.1), 0 8px 10px -6px rgba(99, 102, 241, 0.1);
            --shadow-lg: 0 20px 40px -15px rgba(0,0,0,0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-dark);
            background-color: var(--bg-light);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

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

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        /* Utility classes */
        .section-title {
            text-align: center;
            font-size: 2.2rem;
            margin-bottom: 15px;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            width: 100%;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-gradient {
            background: var(--primary-gradient);
            color: var(--bg-white) !important;
            box-shadow: var(--shadow-md);
        }

        .btn-gradient:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px -5px rgba(99, 102, 241, 0.25);
        }

        .btn-outline {
            border: 2px solid var(--primary-color);
            color: var(--primary-color);
            background: transparent;
        }

        .btn-outline:hover {
            background: var(--primary-color);
            color: var(--bg-white);
            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);
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
        }

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

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

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

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

        nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-muted);
            font-weight: 500;
            transition: var(--transition);
            font-size: 0.95rem;
        }

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

        .nav-btn-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

        .hamburger span {
            display: block;
            width: 25px;
            height: 3px;
            background: var(--text-dark);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* Hero Section (No images allowed) */
        .hero-section {
            padding-top: 150px;
            padding-bottom: 100px;
            background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, rgba(236, 72, 153, 0.05) 90.2%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: var(--primary-gradient);
            filter: blur(150px);
            opacity: 0.15;
            top: -50px;
            left: -50px;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary-color);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 25px;
            border: 1px solid rgba(99, 102, 241, 0.2);
        }

        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 25px;
            letter-spacing: -1px;
        }

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

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

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 45px;
        }

        /* Stats Component */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

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

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

        /* About Us */
        .about-section {
            background: var(--bg-white);
        }

        .about-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

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

        .feature-mini-card {
            padding: 20px;
            background: var(--bg-light);
            border-radius: 12px;
            border-left: 4px solid var(--primary-color);
        }

        .feature-mini-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .feature-mini-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* Services Grid */
        .services-section {
            background: var(--bg-light);
        }

        .model-list-wrapper {
            background: var(--bg-white);
            border-radius: 20px;
            padding: 30px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 40px;
            border: 1px solid var(--border-color);
        }

        .model-list-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
            color: var(--text-dark);
        }

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

        .model-tag {
            background: var(--bg-light);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .model-tag:hover {
            background: var(--primary-gradient);
            color: var(--bg-white);
            border-color: transparent;
        }

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

        .service-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 35px 25px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

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

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

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            background: rgba(99, 102, 241, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            font-size: 1.8rem;
            color: var(--primary-color);
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            font-weight: 700;
        }

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

        .service-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary-color);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* One-stop Scenarios */
        .scenarios-section {
            background: var(--bg-white);
        }

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

        .scenario-card {
            background: var(--bg-light);
            border-radius: 16px;
            padding: 24px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .scenario-card:hover {
            background: var(--bg-white);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-color);
        }

        .scenario-badge {
            display: inline-block;
            padding: 4px 10px;
            background: rgba(236, 72, 153, 0.1);
            color: var(--secondary-color);
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .scenario-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .scenario-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* Solutions */
        .solutions-section {
            background: var(--bg-light);
        }

        .solution-tabs {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .tab-btn {
            padding: 10px 24px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            color: var(--text-muted);
        }

        .tab-btn.active, .tab-btn:hover {
            background: var(--primary-gradient);
            color: var(--bg-white);
            border-color: transparent;
        }

        .solution-content {
            background: var(--bg-white);
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .solution-pane {
            display: none;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: center;
        }

        .solution-pane.active {
            display: grid;
        }

        .solution-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }

        .solution-text ul {
            list-style: none;
            margin-bottom: 30px;
        }

        .solution-text li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            color: var(--text-muted);
        }

        .solution-text li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-weight: bold;
        }

        .solution-media-mock {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
            border-radius: 16px;
            padding: 40px;
            border: 2px dashed rgba(99, 102, 241, 0.2);
            text-align: center;
        }

        /* Service Network & Standard Workflow */
        .network-section {
            background: var(--bg-white);
        }

        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-top: 50px;
            position: relative;
        }

        .workflow-step {
            text-align: center;
            position: relative;
            background: var(--bg-light);
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: var(--bg-white);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px auto;
            font-weight: 700;
        }

        .workflow-step h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

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

        /* Cases Section */
        .cases-section {
            background: var(--bg-light);
        }

        .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);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .case-img-container {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #e2e8f0;
        }

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

        .case-card:hover .case-img-container img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 24px;
        }

        .case-tag {
            font-size: 0.75rem;
            background: var(--bg-light);
            padding: 4px 10px;
            border-radius: 4px;
            color: var(--primary-color);
            font-weight: 600;
            display: inline-block;
            margin-bottom: 12px;
        }

        .case-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .case-desc {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.5;
        }

        /* Comparison Board */
        .comparison-section {
            background: var(--bg-white);
        }

        .rating-badge {
            background: #fffbeb;
            border: 1px solid #fef3c7;
            padding: 20px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 30px;
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .rating-num {
            font-size: 2.5rem;
            font-weight: 900;
            color: #d97706;
        }

        .rating-stars {
            color: #f59e0b;
            font-size: 1.5rem;
            letter-spacing: 2px;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background: var(--bg-white);
            min-width: 800px;
        }

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

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

        .comparison-table td strong {
            color: var(--primary-color);
        }

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

        /* Token Price & Training */
        .token-section {
            background: var(--bg-light);
        }

        .token-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .price-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .price-list {
            list-style: none;
            margin-top: 20px;
        }

        .price-item {
            display: flex;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border-color);
        }

        .price-item:last-child {
            border-bottom: none;
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .training-card {
            background: var(--bg-white);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-3px);
            border-color: var(--primary-color);
        }

        .training-badge {
            font-size: 0.75rem;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary-color);
            padding: 2px 8px;
            border-radius: 4px;
            margin-bottom: 12px;
            display: inline-block;
        }

        /* AI Terminology */
        .terms-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .term-card {
            background: var(--bg-white);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .term-card h4 {
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary-color);
        }

        .term-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* FAQ Accordion */
        .faq-section {
            background: var(--bg-white);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 15px;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .faq-summary {
            padding: 18px 24px;
            background: var(--bg-light);
            font-weight: 600;
            cursor: pointer;
            outline: none;
            user-select: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-summary::-webkit-details-marker {
            display: none;
        }

        .faq-summary::after {
            content: '+';
            font-size: 1.2rem;
            color: var(--primary-color);
            font-weight: bold;
        }

        details[open] .faq-summary::after {
            content: '−';
        }

        .faq-content {
            padding: 20px 24px;
            background: var(--bg-white);
            border-top: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Reviews Section */
        .reviews-section {
            background: var(--bg-light);
        }

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

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

        .review-text {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .author-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .author-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
        }

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

        /* Articles list */
        .articles-section {
            background: var(--bg-white);
        }

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

        .article-card {
            background: var(--bg-light);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .article-card h3 {
            font-size: 1.1rem;
            margin-bottom: 15px;
        }

        .article-link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .article-link:hover {
            text-decoration: underline;
        }

        /* Form / Contact */
        .contact-section {
            background: var(--bg-light);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
        }

        .form-wrap {
            background: var(--bg-white);
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            outline: none;
            transition: var(--transition);
            background: var(--bg-light);
        }

        .form-control:focus {
            border-color: var(--primary-color);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

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

        .contact-info-wrap {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 24px;
            border: 1px solid var(--border-color);
            margin-bottom: 20px;
        }

        .qr-area {
            display: flex;
            gap: 20px;
            align-items: center;
            background: var(--bg-white);
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .qr-area img {
            width: 120px;
            height: 120px;
            object-fit: cover;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        /* Agent Program */
        .agent-section {
            background: var(--primary-gradient);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .agent-section .section-title {
            background: none;
            -webkit-text-fill-color: initial;
            color: #fff;
        }

        .agent-section .section-desc {
            color: rgba(255, 255, 255, 0.85);
        }

        .agent-features {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }

        .agent-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .agent-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }

        .agent-card p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.9);
        }

        /* Footer */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
            border-top: 1px solid #1e293b;
        }

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

        .footer-logo img {
            height: 40px;
            margin-bottom: 15px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

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

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            font-size: 0.8rem;
            transition: var(--transition);
        }

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

        /* Float Customer Service */
        .float-cs {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cs-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--bg-white);
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            color: var(--primary-color);
            font-size: 1.5rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            position: relative;
        }

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

        .cs-qr-hover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            padding: 15px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            display: none;
            border: 1px solid var(--border-color);
            width: 150px;
        }

        .cs-btn:hover .cs-qr-hover {
            display: block;
        }

        .cs-qr-hover img {
            width: 120px;
            height: 120px;
            display: block;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .service-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .workflow-timeline {
                grid-template-columns: repeat(3, 1fr);
                gap: 15px;
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .terms-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .about-layout {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .solution-pane {
                grid-template-columns: 1fr;
                gap: 25px;
            }
            .workflow-timeline {
                grid-template-columns: 1fr;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .token-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: 1fr;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .articles-grid {
                grid-template-columns: 1fr;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .agent-features {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow-md);
            }
            .nav-links {
                flex-direction: column;
                align-items: center;
                width: 100%;
            }
            .nav-btn-group {
                flex-direction: column;
                width: 100%;
                margin-top: 15px;
            }
            .nav-btn-group .btn {
                width: 100%;
            }
            .hamburger {
                display: flex;
            }
            .nav-active nav {
                display: flex;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .terms-grid {
                grid-template-columns: 1fr;
            }
        }