/* CSS Reset & Variables */
        :root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --secondary: #ec4899;
            --accent: #06b6d4;
            --dark: #0f172a;
            --gray-light: #f8fafc;
            --gray-border: #e2e8f0;
            --text-main: #334155;
            --text-muted: #64748b;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #3b82f6 50%, #ec4899 100%);
            --gradient-bg: linear-gradient(180deg, #f5f3ff 0%, #ffffff 100%);
        }

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

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

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

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

        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 2.2rem;
            color: var(--dark);
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--gradient-primary);
            border-radius: 2px;
        }

        .section-title p {
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        /* Typography & Buttons */
        a {
            text-decoration: none;
            color: inherit;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

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

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
        }

        .btn-secondary {
            background: #ffffff;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

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

        /* Navigation Header */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--gray-border);
            transition: var(--transition);
        }

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

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

        .logo-box img {
            height: 40px;
            width: auto;
        }

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

        nav.menu {
            display: flex;
        }

        nav.menu a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition);
            padding: 8px 12px;
            border-radius: 6px;
        }

        nav.menu a:hover {
            color: var(--primary);
            background: rgba(79, 70, 229, 0.05);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

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

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

        /* Hero Section (No Images!) */
        .hero {
            background: var(--gradient-bg);
            padding: 120px 0 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -10%;
            width: 50vw;
            height: 50vw;
            background: radial-gradient(circle, rgba(129, 140, 248, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            right: -10%;
            width: 50vw;
            height: 50vw;
            background: radial-gradient(circle, rgba(236, 72, 153, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
            z-index: 1;
        }

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

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

        .hero h1 span {
            color: var(--primary);
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        /* Data Metrics Grid */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .metric-card {
            background: #ffffff;
            border: 1px solid var(--gray-border);
            padding: 24px;
            border-radius: 16px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(79, 70, 229, 0.08);
            border-color: var(--primary-light);
        }

        .metric-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .metric-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

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

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

        .about-text p {
            color: var(--text-main);
            margin-bottom: 16px;
            font-size: 1.05rem;
        }

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

        .feature-item {
            background: var(--gray-light);
            padding: 20px;
            border-radius: 12px;
            border-left: 4px solid var(--primary);
        }

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

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

        /* Services Capabilities (AIGC Services) */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: #ffffff;
            border: 1px solid var(--gray-border);
            border-radius: 20px;
            padding: 30px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
            border-color: var(--secondary);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: rgba(236, 72, 153, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--secondary);
        }

        .service-card h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 14px;
        }

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

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tag {
            font-size: 0.8rem;
            background: var(--gray-light);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 500;
        }

        /* Model Badges Wall */
        .models-container {
            margin-top: 50px;
            background: var(--gray-light);
            border-radius: 24px;
            padding: 40px;
            text-align: center;
        }

        .models-container h3 {
            margin-bottom: 24px;
            color: var(--dark);
        }

        .model-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }

        .model-badge {
            background: #ffffff;
            border: 1px solid var(--gray-border);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-main);
            box-shadow: 0 2px 6px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

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

        /* Solutions & Workflow */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .workflow-step {
            text-align: center;
            position: relative;
        }

        .step-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            margin: 0 auto 20px auto;
            box-shadow: 0 4px 10px rgba(79, 70, 229, 0.2);
        }

        .workflow-step h4 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

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

        /* Technical Standards */
        .tech-standards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .standard-card {
            background: #ffffff;
            border: 1px solid var(--gray-border);
            padding: 30px;
            border-radius: 16px;
            text-align: center;
        }

        .standard-card .icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
        }

        /* Case Studies (with Images) */
        .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(--gray-border);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        }

        .case-img-container {
            width: 100%;
            overflow: hidden;
            background: var(--gray-light);
        }

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

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

        .case-info {
            padding: 24px;
        }

        .case-category {
            font-size: 0.8rem;
            color: var(--secondary);
            font-weight: 700;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .case-info h4 {
            font-size: 1.2rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

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

        /* Evaluation Section */
        .evaluation-box {
            background: var(--gray-light);
            border-radius: 24px;
            padding: 40px;
            border: 1px solid var(--gray-border);
        }

        .eval-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .eval-score-wrapper {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .eval-stars {
            color: #f59e0b;
            font-size: 1.5rem;
        }

        .eval-score {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--dark);
        }

        .eval-score span {
            font-size: 1.2rem;
            color: var(--text-muted);
            font-weight: 400;
        }

        .eval-table-wrapper {
            width: 100%;
            overflow-x: auto;
        }

        table.eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background: #ffffff;
            border-radius: 12px;
            overflow: hidden;
        }

        table.eval-table th, table.eval-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--gray-border);
            font-size: 0.95rem;
        }

        table.eval-table th {
            background: var(--primary);
            color: #ffffff;
            font-weight: 600;
        }

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

        table.eval-table tbody tr:hover {
            background: rgba(79, 70, 229, 0.02);
        }

        /* Token Pricing */
        .token-pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .price-card {
            background: #ffffff;
            border: 1px solid var(--gray-border);
            border-radius: 16px;
            padding: 30px;
            text-align: center;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .price-card.popular {
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(79,70,229,0.08);
        }

        .price-card.popular::before {
            content: '推荐';
            position: absolute;
            top: 15px;
            right: -30px;
            background: var(--gradient-primary);
            color: #ffffff;
            font-size: 0.75rem;
            padding: 4px 30px;
            transform: rotate(45deg);
        }

        .price-title {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 15px;
            font-weight: 700;
        }

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

        .price-val span {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: 400;
        }

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

        .price-features li {
            font-size: 0.9rem;
            color: var(--text-main);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .price-features li::before {
            content: '✓';
            color: #10b981;
            font-weight: 900;
        }

        /* Agent & Partner Program */
        .agent-banner {
            background: linear-gradient(135deg, #4f46e5 0%, #ec4899 100%);
            color: #ffffff;
            border-radius: 24px;
            padding: 60px 40px;
            text-align: center;
            position: relative;
        }

        .agent-banner h3 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .agent-banner p {
            font-size: 1.15rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }

        /* Training & Certifications */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .training-card {
            background: #ffffff;
            border: 1px solid var(--gray-border);
            padding: 24px 16px;
            border-radius: 12px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .training-icon {
            font-size: 2.2rem;
            margin-bottom: 15px;
            display: inline-block;
        }

        .training-card h4 {
            font-size: 1.05rem;
            color: var(--dark);
            margin-bottom: 10px;
            font-weight: 700;
        }

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

        /* User Reviews (6 reviews required) */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .user-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: 700;
        }

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

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

        .review-content {
            font-size: 0.9rem;
            color: var(--text-main);
            font-style: italic;
        }

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

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

        .faq-trigger {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            transition: var(--transition);
        }

        .faq-trigger:hover {
            background: var(--gray-light);
        }

        .faq-panel {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: #ffffff;
        }

        .faq-content {
            padding: 0 24px 20px 24px;
            color: var(--text-main);
            font-size: 0.95rem;
            border-top: 1px solid transparent;
        }

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

        .faq-item.active .faq-trigger {
            background: rgba(79, 70, 229, 0.02);
            color: var(--primary);
        }

        /* Self-Troubleshooting & Glossary */
        .trouble-glossary-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .trouble-box h3, .glossary-box h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 24px;
            border-left: 4px solid var(--secondary);
            padding-left: 12px;
        }

        .trouble-list, .glossary-list {
            list-style: none;
        }

        .trouble-list li, .glossary-list li {
            background: var(--gray-light);
            border: 1px solid var(--gray-border);
            padding: 16px;
            border-radius: 8px;
            margin-bottom: 12px;
        }

        .trouble-list li h4, .glossary-list li h4 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .trouble-list li p, .glossary-list li p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* News & Knowledge Base (Articles) */
        .articles-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .article-item-card {
            background: #ffffff;
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

        .article-item-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.03);
        }

        .article-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: block;
        }

        .article-item-card h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-item-card h4 a {
            color: inherit;
            transition: var(--transition);
        }

        .article-item-card h4 a:hover {
            color: var(--primary);
        }

        /* Forms (Smart Match & Contact Us) */
        .contact-form-section {
            background: var(--gray-light);
            border-radius: 24px;
            border: 1px solid var(--gray-border);
            padding: 50px 40px;
        }

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

        .form-wrapper h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin-bottom: 24px;
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            font-size: 0.95rem;
            background: #ffffff;
            transition: var(--transition);
        }

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

        .info-wrapper h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin-bottom: 24px;
        }

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

        .contact-item {
            margin-bottom: 16px;
            font-size: 0.95rem;
        }

        .contact-item strong {
            color: var(--dark);
        }

        .qrcode-container {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #ffffff;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--gray-border);
        }

        .qrcode-container img {
            width: 100px;
            height: 100px;
            display: block;
        }

        .qrcode-info h4 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 6px;
        }

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

        /* Footer */
        footer {
            background: var(--dark);
            color: #cbd5e1;
            padding: 60px 0 20px 0;
            border-top: 4px solid var(--primary);
        }

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

        .footer-col h4 {
            color: #ffffff;
            font-size: 1.1rem;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 30px;
            height: 2px;
            background: var(--secondary);
        }

        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.6;
        }

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

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

        .footer-links li a {
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-links li a:hover {
            color: #ffffff;
            padding-left: 5px;
        }

        .friend-links-box {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .friend-links-box a {
            background: rgba(255,255,255,0.05);
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
            color: #cbd5e1;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.85rem;
        }

        /* Floating Widgets */
        .floating-widget {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 99;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: #ffffff;
            border-radius: 50%;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--gray-border);
            position: relative;
        }

        .float-btn:hover {
            background: var(--gradient-primary);
            color: #ffffff;
            transform: translateY(-3px);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .qr-popover {
            position: absolute;
            right: 65px;
            bottom: 0;
            background: #ffffff;
            border: 1px solid var(--gray-border);
            padding: 12px;
            border-radius: 8px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            width: 140px;
        }

        .qr-popover img {
            width: 110px;
            height: 110px;
            display: block;
            margin-bottom: 6px;
        }

        .qr-popover span {
            font-size: 0.75rem;
            color: var(--dark);
            font-weight: 600;
        }

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

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: 1fr 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .reviews-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cases-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            nav.menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #ffffff;
                border-bottom: 1px solid var(--gray-border);
                padding: 20px;
                gap: 10px;
            }
            nav.menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .about-intro-grid, .contact-grid, .trouble-glossary-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .hero-btns .btn {
                width: 100%;
                max-width: 300px;
            }
            .workflow-timeline {
                grid-template-columns: 1fr;
            }
            .services-grid, .cases-grid, .reviews-grid, .token-pricing-grid, .training-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }