/* CSS Reset */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        :root {
            --primary-gradient: linear-gradient(135deg, #ff4e50, #f9d423, #00b8ff, #e100ff);
            --rainbow-red: #ff4e50;
            --rainbow-yellow: #f9d423;
            --rainbow-blue: #00b8ff;
            --rainbow-purple: #e100ff;
            --text-dark: #111827;
            --text-muted: #4b5563;
            --bg-light: #fafafa;
            --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            --card-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.1);
            --container-width: 1200px;
        }

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

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

        /* Section Styling */
        section {
            padding: 100px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-dark);
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 2px;
        }

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

        /* Button Styling */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 9999px;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-rainbow {
            background: var(--primary-gradient);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(225, 0, 255, 0.3);
        }

        .btn-rainbow:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(225, 0, 255, 0.5);
        }

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

        .btn-outline:hover {
            background: var(--text-dark);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0,0,0,0.05);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

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

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

        .brand-name {
            font-size: 1.4rem;
            font-weight: 800;
            background: 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: 24px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s ease;
        }

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

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

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

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-dark);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* Hero Section (No Image) */
        #home {
            padding: 180px 0 120px 0;
            background: radial-gradient(circle at 10% 20%, rgba(255, 78, 80, 0.05) 0%, rgba(0, 184, 255, 0.05) 90%);
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(225, 0, 255, 0.1);
            color: var(--rainbow-purple);
            border-radius: 9999px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(225, 0, 255, 0.2);
        }

        h1 {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            color: var(--text-dark);
        }

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

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

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

        /* Stats Cards in Hero */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .stat-card {
            background: #ffffff;
            padding: 24px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            border-top: 4px solid;
            border-image: var(--primary-gradient) 1;
            transition: transform 0.3s ease;
        }

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

        .stat-card h3 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 8px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        /* About Us & Platform Intro */
        #about {
            background: #ffffff;
        }

        .about-content {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }

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

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

        .about-features {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }

        .about-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .about-features li::before {
            content: '✓';
            color: var(--rainbow-blue);
            font-weight: 900;
            background: rgba(0, 184, 255, 0.1);
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .about-highlight {
            background: var(--primary-gradient);
            padding: 2px;
            border-radius: 20px;
        }

        .about-highlight-inner {
            background: #ffffff;
            padding: 40px;
            border-radius: 18px;
            text-align: center;
        }

        .about-highlight-inner h4 {
            font-size: 1.5rem;
            margin-bottom: 12px;
        }

        /* Services & Automatic Production */
        #services {
            background: #f3f4f6;
        }

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

        .service-card {
            background: #ffffff;
            border-radius: 20px;
            padding: 40px 30px;
            box-shadow: var(--card-shadow);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--primary-gradient);
        }

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

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: rgba(255, 78, 80, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 24px;
        }

        .service-card:nth-child(2n) .service-icon {
            background: rgba(0, 184, 255, 0.1);
        }

        .service-card:nth-child(3n) .service-icon {
            background: rgba(225, 0, 255, 0.1);
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 16px;
        }

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

        /* Multi-model list tag cloud style */
        .model-cloud-box {
            margin-top: 50px;
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            text-align: center;
        }

        .model-cloud-box h4 {
            margin-bottom: 20px;
            font-size: 1.1rem;
            font-weight: 700;
        }

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

        .model-tag {
            padding: 6px 14px;
            background: #f3f4f6;
            border-radius: 9999px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }

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

        /* Solutions & Service Network */
        #solutions {
            background: #ffffff;
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
        }

        .solution-item {
            display: flex;
            gap: 20px;
            background: var(--bg-light);
            padding: 30px;
            border-radius: 16px;
            border-left: 5px solid var(--rainbow-blue);
        }

        .solution-item:nth-child(even) {
            border-left-color: var(--rainbow-purple);
        }

        .solution-info h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

        .solution-info p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .solution-icon {
            font-size: 2rem;
        }

        /* National Network Component */
        .network-section {
            margin-top: 60px;
            text-align: center;
            background: radial-gradient(rgba(255,78,80,0.05), rgba(0,184,255,0.05));
            padding: 40px;
            border-radius: 20px;
        }

        .network-hubs {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 30px;
        }

        .hub-tag {
            background: #ffffff;
            padding: 12px 24px;
            border-radius: 8px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
            font-weight: 600;
            border: 1px solid #eee;
        }

        /* Timeline Flow & Tech Standards */
        #workflow {
            background: #f3f4f6;
        }

        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background: var(--primary-gradient);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }

        .timeline-container {
            padding: 10px 40px;
            position: relative;
            background-color: inherit;
            width: 50%;
        }

        .timeline-container::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: white;
            border: 4px solid var(--rainbow-purple);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }

        .left {
            left: 0;
        }

        .right {
            left: 50%;
        }

        .right::after {
            left: -10px;
            border-color: var(--rainbow-blue);
        }

        .timeline-content {
            padding: 20px 30px;
            background-color: white;
            position: relative;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
        }

        .timeline-content h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

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

        .tech-standards {
            margin-top: 60px;
            background: #ffffff;
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
        }

        .tech-standards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            text-align: center;
        }

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

        /* Cases Section */
        #cases {
            background: #ffffff;
        }

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

        .case-card {
            background: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid #f0f0f0;
            transition: all 0.3s ease;
        }

        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--card-shadow-hover);
        }

        .case-img-wrapper {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #eee;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            padding: 4px 10px;
            background: rgba(0, 184, 255, 0.1);
            color: var(--rainbow-blue);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .case-info h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

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

        /* Comparison Board */
        #comparison {
            background: #f3f4f6;
        }

        .comp-score-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            margin-bottom: 40px;
            box-shadow: var(--card-shadow);
        }

        .comp-score-item {
            text-align: center;
        }

        .comp-score-item .score {
            font-size: 3rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .comp-score-item .stars {
            font-size: 1.5rem;
            color: #ffaa00;
        }

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

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .comparison-table th, .comparison-table td {
            padding: 18px 24px;
            text-align: left;
            border-bottom: 1px solid #f0f0f0;
        }

        .comparison-table th {
            background: var(--text-dark);
            color: #ffffff;
            font-weight: 600;
        }

        .comparison-table tr:hover {
            background-color: rgba(0, 184, 255, 0.02);
        }

        .comparison-table td:nth-child(2) {
            font-weight: bold;
            color: var(--rainbow-purple);
        }

        /* Token Price Box */
        .token-price-box {
            margin-top: 60px;
        }

        /* Training Section */
        #training {
            background: #ffffff;
        }

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

        .training-card {
            background: var(--bg-light);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            border: 1px solid #eee;
            transition: all 0.3s ease;
        }

        .training-card:hover {
            background: #ffffff;
            border-color: var(--rainbow-yellow);
            transform: translateY(-5px);
            box-shadow: var(--card-shadow);
        }

        .training-icon {
            font-size: 2rem;
            margin-bottom: 16px;
        }

        .training-card h3 {
            font-size: 1rem;
            margin-bottom: 8px;
        }

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

        /* FAQ Section */
        #faq {
            background: #f3f4f6;
        }

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

        .faq-item {
            background: #ffffff;
            border-radius: 12px;
            margin-bottom: 16px;
            box-shadow: var(--card-shadow);
            overflow: hidden;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .faq-answer p {
            padding-bottom: 20px;
        }

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

        .faq-item.active .faq-question::after {
            content: '−';
        }

        .faq-question::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: bold;
            color: var(--rainbow-blue);
        }

        /* Self troubleshoot & dictionary */
        .troubleshoot-box {
            margin-top: 50px;
            background: #ffffff;
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
        }

        .troubleshoot-box h3 {
            margin-bottom: 24px;
            font-size: 1.3rem;
            text-align: center;
        }

        .troubleshoot-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .troubleshoot-step h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            color: var(--rainbow-purple);
        }

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

        /* Dictionary list */
        .dict-section {
            margin-top: 40px;
        }

        .dict-section h4 {
            margin-bottom: 16px;
            font-size: 1.1rem;
        }

        .dict-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .dict-item {
            background: var(--bg-light);
            padding: 16px;
            border-radius: 8px;
            border: 1px dashed #ddd;
        }

        .dict-item strong {
            display: block;
            margin-bottom: 4px;
            color: var(--text-dark);
        }

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

        /* Articles / Knowledge base */
        #knowledge {
            background: #ffffff;
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .article-card {
            background: var(--bg-light);
            border-radius: 12px;
            padding: 20px;
            border: 1px solid #eee;
            transition: all 0.3s ease;
        }

        .article-card:hover {
            transform: translateY(-4px);
            border-color: var(--rainbow-blue);
        }

        .article-card span {
            display: block;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .article-card h3 {
            font-size: 0.95rem;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-card h3 a {
            text-decoration: none;
            color: var(--text-dark);
        }

        .article-card h3 a:hover {
            color: var(--rainbow-blue);
        }

        .article-link {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--rainbow-blue);
            text-decoration: none;
        }

        /* Reviews Section */
        #reviews {
            background: #f3f4f6;
        }

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

        .review-card {
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

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

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

        .review-info h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }

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

        /* Contact & Form Section */
        #contact {
            background: #ffffff;
        }

        .contact-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .form-box {
            background: var(--bg-light);
            padding: 40px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #ddd;
            border-radius: 8px;
            background: #ffffff;
            font-size: 1rem;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--rainbow-purple);
        }

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

        .info-contact-list {
            list-style: none;
        }

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

        .info-icon {
            font-size: 1.5rem;
        }

        .info-text h4 {
            font-size: 1rem;
            margin-bottom: 4px;
        }

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

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

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

        .qr-item img {
            width: 120px;
            height: 120px;
            object-fit: cover;
            border: 1px solid #eee;
            border-radius: 8px;
            padding: 4px;
        }

        .qr-item p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* Footer */
        footer {
            background: #111827;
            color: #9ca3af;
            padding: 80px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-brand h3 {
            color: #ffffff;
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-links h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-size: 1rem;
        }

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

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

        .footer-links ul li a {
            color: #9ca3af;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .friendship-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 10px;
        }

        .friendship-links a {
            color: #9ca3af;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .footer-bottom {
            border-top: 1px solid #1f2937;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* Floating Contact Widget */
        .floating-widget {
            position: fixed;
            bottom: 40px;
            right: 40px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #ffffff;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
        }

        .float-btn:hover {
            transform: translateY(-4px);
            background: var(--primary-gradient);
            color: #ffffff;
        }

        .float-btn .tooltip {
            position: absolute;
            right: 60px;
            background: #ffffff;
            color: var(--text-dark);
            padding: 8px 12px;
            border-radius: 4px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            font-size: 0.8rem;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }

        .float-btn:hover .tooltip {
            opacity: 1;
            visibility: visible;
        }

        .qr-popup {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #ffffff;
            padding: 16px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
        }

        .qr-popup img {
            width: 120px;
            height: 120px;
            object-fit: cover;
        }

        .qr-popup p {
            font-size: 0.75rem;
            color: var(--text-dark);
            margin-top: 8px;
        }

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

        @media (max-width: 768px) {
            h1 {
                font-size: 2.5rem;
            }
            .menu-toggle {
                display: flex;
            }
            nav {
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 24px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }
            nav.active {
                display: flex;
            }
            .nav-links {
                flex-direction: column;
                width: 100%;
                align-items: center;
            }
            .nav-actions {
                flex-direction: column;
                width: 100%;
                margin-top: 16px;
            }
            .about-content, .contact-wrapper, .solutions-grid {
                grid-template-columns: 1fr;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-container {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-container::after {
                left: 21px;
            }
            .right {
                left: 0%;
            }
            .right::after {
                left: 21px;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: 1fr;
            }
            .articles-grid {
                grid-template-columns: 1fr;
            }
            .troubleshoot-steps {
                grid-template-columns: 1fr;
            }
            .dict-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }