:root {
            --primary: #FFD600;
            --primary-hover: #E6C000;
            --dark: #1A1A1A;
            --dark-light: #2A2A2A;
            --light: #FFFFFF;
            --gray-100: #F8F9FA;
            --gray-200: #E9ECEF;
            --gray-600: #6C757D;
            --gray-800: #343A40;
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }

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

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

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

        section {
            padding: 80px 0;
            scroll-margin-top: 70px;
        }

        section:nth-child(even) {
            background-color: var(--gray-100);
        }

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

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

        .section-header h2 {
            font-size: 32px;
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .section-header p {
            color: var(--gray-600);
            margin-top: 15px;
            font-size: 16px;
        }

        /* Header & Navigation */
        header {
            background-color: var(--light);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

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

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
        }

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

        .nav-link {
            color: var(--dark);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: var(--dark);
            padding: 8px 18px;
            border-radius: 4px;
            text-decoration: none;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }

        .nav-btn:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
        }

        /* Hero Section (Text/Gradient Only - No Images) */
        .hero {
            background: linear-gradient(135deg, #FFFDF0 0%, #FFFFFF 100%);
            border-bottom: 4px solid var(--primary);
            padding: 100px 0;
            text-align: center;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-badge {
            background-color: var(--dark);
            color: var(--primary);
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 42px;
            margin-bottom: 24px;
            color: var(--dark);
        }

        .hero p {
            font-size: 18px;
            color: var(--gray-600);
            margin-bottom: 40px;
        }

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

        .btn-primary {
            background-color: var(--primary);
            color: var(--dark);
            padding: 15px 35px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            transition: var(--transition);
            border: 2px solid var(--primary);
            box-shadow: 0 4px 15px rgba(255, 214, 0, 0.4);
        }

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

        .btn-secondary {
            background-color: var(--dark);
            color: var(--light);
            padding: 15px 35px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            transition: var(--transition);
            border: 2px solid var(--dark);
        }

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

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            margin-top: 60px;
        }

        .stat-card {
            background-color: var(--light);
            border: 2px solid var(--primary);
            border-radius: 8px;
            padding: 30px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .stat-label {
            color: var(--gray-600);
            font-size: 14px;
        }

        /* Content Blocks */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .card {
            background: var(--light);
            border: 1px solid var(--gray-200);
            border-radius: 8px;
            padding: 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background-color: var(--primary);
            transform: scaleX(0);
            transition: var(--transition);
        }

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

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

        .card-icon {
            font-size: 32px;
            margin-bottom: 20px;
        }

        .card h3 {
            font-size: 20px;
            margin-bottom: 15px;
        }

        .card p {
            color: var(--gray-600);
            font-size: 14px;
        }

        /* Image Display Layout (Grid & Flex) */
        .img-grid-section {
            background-color: var(--gray-100);
        }

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

        .img-container {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 4px solid var(--primary);
        }

        .img-container img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        .img-text-content {
            padding: 20px;
        }

        /* Support models Cloud Tags */
        .tags-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 30px;
        }

        .tag-pill {
            background-color: var(--light);
            border: 1px solid var(--gray-200);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

        .tag-pill:hover {
            background-color: var(--primary);
            border-color: var(--primary);
            transform: scale(1.05);
        }

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

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

        .timeline-item {
            padding: 20px 40px;
            position: relative;
            background-color: inherit;
            width: 50%;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: var(--light);
            border: 4px solid var(--primary);
            top: 25px;
            border-radius: 50%;
            z-index: 1;
        }

        .left {
            left: 0;
            text-align: right;
        }

        .right {
            left: 50%;
        }

        .right::after {
            left: -10px;
        }

        .timeline-content {
            padding: 20px;
            background-color: var(--light);
            position: relative;
            border-radius: 6px;
            box-shadow: var(--shadow);
        }

        /* Tables & Ratings */
        .comparison-table-wrapper {
            overflow-x: auto;
            margin-top: 40px;
            border: 1px solid var(--gray-200);
            border-radius: 8px;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background-color: var(--light);
            min-width: 600px;
        }

        th, td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--gray-200);
        }

        th {
            background-color: var(--dark);
            color: var(--light);
            font-weight: 600;
        }

        tr:hover {
            background-color: var(--gray-100);
        }

        .highlight-row {
            background-color: #FFFDF0;
            font-weight: 600;
        }

        .badge-star {
            color: #FF8F00;
            font-weight: 700;
        }

        /* Training Badge Section */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .training-card {
            border: 2px solid var(--dark);
            background-color: var(--light);
            border-radius: 8px;
            padding: 30px;
            text-align: center;
            position: relative;
        }

        .training-card::after {
            content: '';
            position: absolute;
            top: 6px;
            left: 6px;
            right: -6px;
            bottom: -6px;
            background-color: var(--primary);
            z-index: -1;
            border-radius: 8px;
            border: 2px solid var(--dark);
        }

        /* Form styling */
        .form-section {
            background-color: var(--dark);
            color: var(--light);
            border-top: 4px solid var(--primary);
        }

        .form-section h2 {
            color: var(--light);
        }

        .form-container {
            max-width: 700px;
            margin: 0 auto;
            background-color: var(--dark-light);
            padding: 40px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            background-color: var(--dark);
            border: 1px solid var(--gray-800);
            border-radius: 4px;
            color: var(--light);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        .form-submit-btn {
            background-color: var(--primary);
            color: var(--dark);
            border: none;
            width: 100%;
            padding: 15px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            border-radius: 4px;
            transition: var(--transition);
        }

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

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

        .faq-item {
            border-bottom: 1px solid var(--gray-200);
            padding: 15px 0;
        }

        .faq-trigger {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            color: var(--dark);
        }

        .faq-content {
            display: none;
            padding: 10px 0 20px;
            color: var(--gray-600);
            font-size: 15px;
        }

        .faq-content p {
            margin: 0;
        }

        /* Reviews Section */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .review-card {
            background: var(--light);
            border: 1px solid var(--gray-200);
            padding: 24px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }

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

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

        .review-meta h4 {
            font-size: 16px;
            margin-bottom: 2px;
        }

        .review-meta span {
            font-size: 12px;
            color: var(--gray-600);
        }

        /* Articles list */
        .articles-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .articles-list li a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 500;
            display: inline-block;
            transition: var(--transition);
        }

        .articles-list li a:hover {
            color: var(--primary-hover);
            text-decoration: underline;
        }

        /* Service network tags */
        .network-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .network-item {
            background-color: var(--light);
            border-left: 4px solid var(--primary);
            padding: 15px;
            border-radius: 0 4px 4px 0;
            box-shadow: var(--shadow);
        }

        /* Self troubleshoot & Terms */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .wiki-card, .trouble-card {
            background-color: var(--light);
            border: 1px solid var(--gray-200);
            border-radius: 8px;
            padding: 30px;
        }

        .wiki-card h3, .trouble-card h3 {
            margin-bottom: 20px;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 10px;
        }

        .list-unstyled {
            list-style: none;
        }

        .list-unstyled li {
            margin-bottom: 15px;
            font-size: 14px;
        }

        .list-unstyled li strong {
            display: block;
            color: var(--dark);
            margin-bottom: 4px;
            font-size: 16px;
        }

        /* Footer */
        footer {
            background-color: var(--dark);
            color: var(--gray-200);
            padding: 60px 0 20px;
            border-top: 4px solid var(--primary);
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo-area p {
            color: var(--gray-600);
            margin-top: 15px;
        }

        .footer-col h3 {
            color: var(--light);
            font-size: 16px;
            margin-bottom: 20px;
            position: relative;
        }

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

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

        .footer-links a {
            color: var(--gray-600);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--gray-800);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--gray-600);
        }

        .footer-bottom a {
            color: var(--gray-600);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* Float Widget */
        .float-widget {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            font-weight: bold;
            font-size: 12px;
            transition: var(--transition);
            text-decoration: none;
        }

        .float-btn:hover {
            transform: scale(1.1);
        }

        .float-qr {
            position: relative;
        }

        .qr-popover {
            display: none;
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--light);
            border: 2px solid var(--primary);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            width: 160px;
            text-align: center;
        }

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

        .qr-popover p {
            font-size: 12px;
            margin-top: 5px;
            color: var(--dark);
        }

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

        /* Responsive Styles */
        @media (max-width: 992px) {
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
                text-align: left;
            }
            .timeline-item::after {
                left: 21px;
            }
            .left {
                text-align: left;
            }
            .right {
                left: 0;
            }
            .img-layout {
                grid-template-columns: 1fr;
            }
            .help-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--light);
                border-top: 1px solid var(--gray-200);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 28px;
            }
        }