/* CSS Reset & Variables */
        :root {
            --primary: #0052cc;
            --primary-light: #e6f0ff;
            --primary-hover: #0043a4;
            --accent: #00c4ff;
            --text-dark: #1e293b;
            --text-light: #64748b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --transition: all 0.3s ease;
            --container-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
        }

        h2 {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 15px;
            position: relative;
        }

        h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background: var(--primary);
            margin: 12px auto 0;
            border-radius: 2px;
        }

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

        /* Header Navigation */
        .header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
        }

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

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

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

        .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
        }

        .nav-menu {
            display: flex;
            gap: 24px;
            list-style: none;
            align-items: center;
        }

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

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

        .nav-btn {
            background-color: var(--primary);
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 6px;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .nav-btn:hover {
            background-color: var(--primary-hover);
        }

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-dark);
            transition: var(--transition);
        }

        /* Hero Section (No Image) */
        .hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
            color: #ffffff;
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 82, 204, 0.15) 0%, transparent 60%);
            animation: rotateBg 20s linear infinite;
            pointer-events: none;
        }

        @keyframes rotateBg {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

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

        .hero-title {
            font-size: 2.8rem;
            color: #ffffff;
            margin-bottom: 20px;
            letter-spacing: 1px;
            text-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }

        .hero-subtitle {
            font-size: 1.3rem;
            color: #93c5fd;
            margin-bottom: 40px;
            max-width: 750px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 50px;
        }

        .btn-main {
            background-color: var(--primary);
            color: #fff;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            box-shadow: 0 4px 15px rgba(0, 82, 204, 0.4);
            transition: var(--transition);
        }

        .btn-main:hover {
            background-color: #0066ff;
            transform: translateY(-2px);
        }

        .btn-sub {
            background-color: rgba(255, 255, 255, 0.1);
            color: #fff;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition);
        }

        .btn-sub:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        /* Stats Cards (Inside Hero or just below) */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 24px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            background: rgba(255, 255, 255, 0.12);
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: #cbd5e1;
        }

        /* Section Layouts */
        .section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section:nth-child(even) {
            background-color: var(--bg-white);
        }

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

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

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

        /* Card Styles */
        .card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: var(--transition);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            border-color: var(--primary);
        }

        .card-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .card-title {
            font-size: 1.25rem;
            margin-bottom: 12px;
        }

        .card-desc {
            color: var(--text-light);
            font-size: 0.95rem;
        }

        /* Tag Cloud Styling */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 30px;
        }

        .tag-item {
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(0, 82, 204, 0.1);
            transition: var(--transition);
        }

        .tag-item:hover {
            background-color: var(--primary);
            color: #fff;
        }

        /* Comparison Table Section */
        .table-responsive {
            overflow-x: auto;
            background-color: var(--bg-white);
            border-radius: 12px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            border: 1px solid var(--border-color);
        }

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

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

        .comp-table th {
            background-color: #f1f5f9;
            font-weight: 700;
            color: var(--text-dark);
        }

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

        .comp-table tr.highlight {
            background-color: rgba(0, 82, 204, 0.03);
        }

        .badge-star {
            color: #eab308;
            font-size: 1.1rem;
        }

        /* Timeline (Steps) */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 2px;
            background-color: var(--border-color);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -1px;
        }

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

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            right: -8px;
            background-color: var(--bg-white);
            border: 4px solid var(--primary);
            border-radius: 50%;
            top: 15px;
            z-index: 1;
        }

        .left {
            left: 0;
        }

        .right {
            left: 50%;
        }

        .right::after {
            left: -8px;
        }

        .timeline-content {
            padding: 20px;
            background-color: var(--bg-white);
            position: relative;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        /* FAQ Accordion */
        .faq-accordion {
            max-width: 850px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-trigger::after {
            content: '+';
            font-size: 1.4rem;
            color: var(--primary);
            transition: var(--transition);
        }

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

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #fafbfc;
        }

        .faq-content-inner {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
        }

        /* Image styling */
        .image-wrapper {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            border: 1px solid var(--border-color);
        }

        .image-wrapper img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
            transition: var(--transition);
        }

        .image-wrapper:hover img {
            transform: scale(1.03);
        }

        /* Customer Reviews */
        .review-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            position: relative;
        }

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

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

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

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

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

        /* Contact & Form Section */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: start;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .info-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }

        .info-icon {
            width: 40px;
            height: 40px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .info-details h4 {
            font-size: 1.05rem;
            margin-bottom: 5px;
        }

        .info-details p, .info-details a {
            color: var(--text-light);
            text-decoration: none;
            font-size: 0.95rem;
        }

        .qr-codes {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            margin-top: 20px;
        }

        .qr-card {
            text-align: center;
            border: 1px solid var(--border-color);
            padding: 12px;
            border-radius: 8px;
            background-color: var(--bg-white);
        }

        .qr-card img {
            width: 100%;
            max-width: 120px;
            height: auto;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .qr-card p {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-dark);
        }

        /* Form styling */
        .form-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.02);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            color: var(--text-dark);
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.1);
        }

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

        .btn-submit {
            width: 100%;
            background-color: var(--primary);
            color: #fff;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-submit:hover {
            background-color: var(--primary-hover);
        }

        /* Partner networks (Map Representation) */
        .service-network-box {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 40px;
            text-align: center;
        }

        .city-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 15px;
            margin-top: 30px;
        }

        .city-tag {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 10px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .city-tag:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* Article List & Tech News */
        .article-section {
            background-color: var(--bg-white);
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 30px;
        }

        .article-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background-color: var(--bg-light);
            transition: var(--transition);
            text-decoration: none;
            color: var(--text-dark);
        }

        .article-item:hover {
            border-color: var(--primary);
            background-color: var(--primary-light);
            transform: translateX(5px);
        }

        .article-title {
            font-weight: 600;
            font-size: 1rem;
        }

        .article-meta {
            font-size: 0.85rem;
            color: var(--text-light);
        }

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

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

        .footer-logo {
            margin-bottom: 20px;
            
        }

        .footer-title {
            color: #ffffff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }

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

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

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.85rem;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 4px 10px;
            border-radius: 4px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 25px;
            text-align: center;
            font-size: 0.85rem;
        }

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

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }

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

        .float-qr {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            width: 160px;
        }

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

        .float-qr p {
            color: var(--text-dark);
            font-size: 0.8rem;
            margin-top: 8px;
            font-weight: 600;
        }

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

        /* Responsive Styles */
        @media (max-width: 1024px) {
            .grid-3, .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .city-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

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

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

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

            .hero-subtitle {
                font-size: 1.1rem;
            }

            .grid-2, .grid-3, .grid-4, .contact-layout {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .timeline::after {
                left: 31px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }

            .timeline-item.right {
                left: 0;
            }

            .timeline-item::after {
                left: 23px;
                right: auto;
            }

            .city-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 480px) {
            .stats-grid, .city-grid {
                grid-template-columns: 1fr;
            }
            .qr-codes {
                grid-template-columns: 1fr;
            }
        }