:root {
            --primary: #0052d4;
            --primary-bright: #00d2ff;
            --accent: #00f260;
            --dark: #0f172a;
            --slate-700: #334155;
            --slate-600: #475569;
            --light: #f8fafc;
            --white: #ffffff;
            --border: #e2e8f0;
            --gradient-primary: linear-gradient(135deg, #0052d4 0%, #4364f7 50%, #6fb1fc 100%);
            --gradient-bright: linear-gradient(135deg, #00d2ff 0%, #00f260 100%);
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --shadow-glow: 0 0 20px rgba(0, 210, 255, 0.3);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--light);
            color: var(--slate-700);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
            width: 100%;
        }

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

        /* Typography */
        h1, h2, h3, h4 {
            color: var(--dark);
            font-weight: 800;
            line-height: 1.25;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-bright);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 99px;
            font-weight: 700;
            font-size: 16px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            outline: none;
            gap: 8px;
        }

        .btn-primary {
            background: var(--gradient-bright);
            color: var(--dark);
            box-shadow: var(--shadow-glow);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(0, 242, 96, 0.4);
            color: var(--dark);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.1);
            color: var(--white);
            border: 2px solid rgba(255, 255, 255, 0.2);
        }

        .btn-secondary:hover {
            background: var(--white);
            color: var(--dark);
            transform: translateY(-2px);
        }

        .btn-dark {
            background: var(--dark);
            color: var(--white);
        }

        .btn-dark:hover {
            background: #1e293b;
            transform: translateY(-2px);
        }

        /* Header Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

        header.scrolled {
            box-shadow: var(--shadow-md);
            background: var(--white);
        }

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

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

        .ai-page-logo {
            height: 38px;
            width: auto;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 900;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }

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

        .nav-links a {
            color: var(--slate-700);
            font-weight: 600;
            font-size: 15px;
            padding: 8px 12px;
            border-radius: 6px;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(0, 82, 212, 0.05);
        }

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

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background: var(--dark);
            margin: 5px 0;
            transition: 0.3s;
        }

        /* Section Layouts */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px auto;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 99px;
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: rgba(0, 82, 212, 0.08);
            color: var(--primary);
            margin-bottom: 15px;
        }

        .section-title {
            font-size: 32px;
            margin-bottom: 15px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--slate-600);
        }

        /* Hero Section (No Image Allowed) */
        .hero {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 80% 20%, rgba(0, 210, 255, 0.15) 0%, transparent 50%), 
                        radial-gradient(circle at 10% 80%, rgba(0, 242, 96, 0.1) 0%, transparent 50%),
                        var(--white);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            background: var(--gradient-bright);
            filter: blur(120px);
            top: 10%;
            left: 20%;
            opacity: 0.4;
            pointer-events: none;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(15, 23, 42, 0.05);
            padding: 6px 18px;
            border-radius: 99px;
            font-size: 14px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 24px;
            border: 1px solid rgba(15, 23, 42, 0.08);
        }

        .hero-badge span {
            background: var(--gradient-bright);
            width: 8px;
            height: 8px;
            border-radius: 50%;
            display: inline-block;
        }

        .hero h1 {
            font-size: 46px;
            font-weight: 900;
            letter-spacing: -1px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #475569 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 18px;
            color: var(--slate-600);
            max-width: 800px;
            margin: 0 auto 35px auto;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        .hero-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .hero-feature-item {
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--border);
            padding: 20px;
            border-radius: 16px;
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }

        .hero-feature-item:hover {
            transform: translateY(-5px);
            border-color: var(--primary-bright);
            box-shadow: var(--shadow-lg);
        }

        .hero-feature-item h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .hero-feature-item p {
            font-size: 13px;
            margin: 0;
            color: var(--slate-600);
        }

        /* Stats Cards */
        .stats-section {
            background: var(--dark);
            color: var(--white);
            padding: 60px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-card h3 {
            font-size: 40px;
            color: var(--primary-bright);
            margin-bottom: 5px;
            background: var(--gradient-bright);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* Service Cards (Grid layout) */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 30px;
            border-radius: 20px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

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

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

        .service-icon {
            width: 50px;
            height: 50px;
            background: rgba(0, 82, 212, 0.08);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 20px;
            font-weight: 900;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--slate-600);
            margin-bottom: 15px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .service-tags span {
            background: var(--light);
            border: 1px solid var(--border);
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
        }

        /* Model Logo Cloud */
        .model-cloud-wrapper {
            background: var(--white);
            padding: 40px 20px;
            border-radius: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            margin-top: 40px;
            text-align: center;
        }

        .model-cloud-title {
            font-size: 16px;
            color: var(--slate-600);
            margin-bottom: 25px;
            font-weight: 700;
        }

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

        .model-tag {
            background: var(--light);
            color: var(--dark);
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .model-tag:hover {
            background: var(--dark);
            color: var(--white);
            transform: scale(1.05);
        }

        /* Process Steps */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-step {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 30px;
            border-radius: 20px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-number {
            width: 45px;
            height: 45px;
            background: var(--gradient-primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            margin: 0 auto 20px auto;
            box-shadow: var(--shadow-md);
        }

        .process-step h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 13px;
            color: var(--slate-600);
        }

        /* Compare Table */
        .compare-wrapper {
            background: var(--white);
            border-radius: 24px;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

        .compare-table th, .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border);
        }

        .compare-table th {
            background: var(--light);
            font-weight: 800;
            color: var(--dark);
        }

        .compare-table tr:hover {
            background: rgba(0, 82, 212, 0.02);
        }

        .badge-score {
            display: inline-block;
            background: var(--gradient-bright);
            color: var(--dark);
            padding: 4px 10px;
            border-radius: 6px;
            font-weight: 800;
            font-size: 14px;
        }

        .check-icon {
            color: #00f260;
            font-weight: 900;
            font-size: 18px;
        }

        .cross-icon {
            color: #ff007f;
            font-weight: 900;
            font-size: 18px;
        }

        /* Cases Grid (with images) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background: var(--white);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

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

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

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

        .case-body {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            background: rgba(0, 210, 255, 0.1);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .case-body h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .case-body p {
            font-size: 13px;
            color: var(--slate-600);
        }

        /* Testimonials */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .comment-card {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 20px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .comment-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-bright);
        }

        .comment-stars {
            color: #ffd700;
            font-size: 16px;
            margin-bottom: 10px;
        }

        .comment-text {
            font-size: 14px;
            color: var(--slate-600);
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .user-avatar-placeholder {
            width: 40px;
            height: 40px;
            background: var(--gradient-primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
        }

        .user-info h4 {
            font-size: 14px;
            margin: 0;
        }

        .user-info p {
            font-size: 12px;
            color: var(--slate-600);
            margin: 0;
        }

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

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

        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            font-weight: 400;
            transition: transform 0.3s;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: rgba(0, 0, 0, 0.01);
        }

        .faq-answer-inner {
            padding: 0 24px 20px 24px;
            font-size: 14px;
            color: var(--slate-600);
            line-height: 1.6;
        }

        .faq-item.active .faq-answer {
            max-height: 200px; /* Adjust according to content length */
        }

        /* Articles Section */
        .articles-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .article-card {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 16px;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--primary-bright);
            box-shadow: var(--shadow-md);
        }

        .article-card h3 {
            font-size: 16px;
            margin-bottom: 10px;
        }

        .article-card a {
            font-weight: 700;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            margin-top: 10px;
        }

        /* Contact & Form Section */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .contact-info-panel {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 40px;
            border-radius: 24px;
            box-shadow: var(--shadow-sm);
        }

        .contact-info-panel h3 {
            font-size: 24px;
            margin-bottom: 25px;
        }

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

        .contact-meta-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
            font-size: 15px;
        }

        .contact-meta-icon {
            width: 40px;
            height: 40px;
            background: rgba(0, 82, 212, 0.05);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
        }

        .qrcode-box {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 30px;
        }

        .qrcode-item {
            text-align: center;
            width: 120px;
        }

        .qrcode-item img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            border: 1px solid var(--border);
            margin-bottom: 8px;
        }

        .qrcode-item p {
            font-size: 12px;
            font-weight: 700;
            color: var(--dark);
        }

        /* Form styling */
        .contact-form-panel {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 40px;
            border-radius: 24px;
            box-shadow: var(--shadow-lg);
        }

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

        .form-label {
            display: block;
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--border);
            outline: none;
            font-size: 14px;
            font-family: inherit;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 82, 212, 0.15);
        }

        /* Footer */
        footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            color: var(--white);
            font-size: 20px;
            margin-bottom: 15px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .footer-links h4 {
            color: var(--white);
            font-size: 15px;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            flex-wrap: wrap;
            gap: 15px;
        }

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

        .friend-links a {
            color: rgba(255, 255, 255, 0.5);
        }

        .friend-links a:hover {
            color: var(--white);
        }

        /* Floating Contact Box */
        .floating-contact {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--white);
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--border);
            position: relative;
        }

        .float-btn:hover {
            background: var(--primary);
            color: var(--white);
            transform: scale(1.05);
        }

        .float-btn-primary {
            background: var(--gradient-bright);
            color: var(--dark);
            border: none;
        }

        .float-qr-hover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--white);
            padding: 15px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            display: none;
            width: 140px;
            text-align: center;
        }

        .float-qr-hover img {
            width: 100%;
            height: auto;
            border-radius: 6px;
            margin-bottom: 5px;
        }

        .float-qr-hover p {
            color: var(--dark);
            font-size: 11px;
            font-weight: 700;
        }

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

        /* Responsive Styles */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 38px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            nav {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .nav-actions {
                display: none;
            }
            .hero h1 {
                font-size: 30px;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .comments-grid {
                grid-template-columns: 1fr;
            }
            .compare-wrapper {
                overflow-x: auto;
            }
            .compare-table {
                min-width: 600px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }