/* CSS Reset & Variables */
        :root {
            --primary-gradient: linear-gradient(135deg, #FF3E88 0%, #FF8533 30%, #3B82F6 70%, #8B5CF6 100%);
            --rainbow-1: #FF3E88;
            --rainbow-2: #FF8533;
            --rainbow-3: #10B981;
            --rainbow-4: #3B82F6;
            --rainbow-5: #8B5CF6;
            
            --bg-main: #FAFAFC;
            --bg-card: #FFFFFF;
            --text-main: #1F2937;
            --text-muted: #4B5563;
            --text-light: #9CA3AF;
            --border-color: #E5E7EB;
            --container-max: 1200px;
            --transition-speed: 0.3s;
        }

        * {
            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;
            color: var(--text-main);
            background-color: var(--bg-main);
        }

        body {
            overflow-x: hidden;
            line-height: 1.6;
        }

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

        /* Headings */
        h1, h2, h3, h4 {
            font-weight: 800;
            line-height: 1.25;
            color: #111827;
        }

        /* Banner Accent */
        .rainbow-text {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 9999px;
            border: none;
            cursor: pointer;
            transition: transform var(--transition-speed), box-shadow var(--transition-speed);
            text-decoration: none;
        }

        .btn-gradient {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
        }

        .btn-gradient:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
        }

        .btn-outline {
            background: #fff;
            color: var(--text-main);
            border: 2px solid #E5E7EB;
        }

        .btn-outline:hover {
            border-color: var(--rainbow-4);
            color: var(--rainbow-4);
        }

        /* Navigation */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition-speed);
        }

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

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

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

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

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

        .nav-link {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: color var(--transition-speed);
        }

        .nav-link:hover {
            color: var(--rainbow-1);
        }

        .nav-btn {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* Hero Section (Strictly No Images) */
        .hero {
            position: relative;
            padding: 100px 0 80px;
            background: radial-gradient(circle at 10% 20%, rgba(255, 62, 136, 0.05) 0%, rgba(59, 130, 246, 0.05) 90%);
            text-align: center;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 300px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 99px;
            background: rgba(255, 62, 136, 0.08);
            color: var(--rainbow-1);
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 35px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        /* Section Global */
        .section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-tag {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--rainbow-4);
            font-weight: 700;
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 2.2rem;
            margin-bottom: 15px;
        }

        .section-subtitle {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            transition: transform var(--transition-speed), border-color var(--transition-speed);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--rainbow-5);
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 600;
        }

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

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 35px;
            position: relative;
            overflow: hidden;
            transition: all var(--transition-speed);
        }

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

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

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

        .service-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1.25rem;
            margin-bottom: 20px;
        }

        .service-icon.c1 { background: var(--rainbow-1); }
        .service-icon.c2 { background: var(--rainbow-2); }
        .service-icon.c3 { background: var(--rainbow-3); }
        .service-icon.c4 { background: var(--rainbow-4); }
        .service-icon.c5 { background: var(--rainbow-5); }
        .service-icon.c6 { background: #E11D48; }

        .service-title {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }

        .service-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

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

        .model-tag {
            font-size: 0.75rem;
            background: #F3F4F6;
            color: var(--text-muted);
            padding: 2px 8px;
            border-radius: 4px;
        }

        /* Flow & Timeline */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 40px 0;
        }

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

        .timeline-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            margin-bottom: 40px;
            position: relative;
        }

        .timeline-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .timeline-dot {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: #fff;
            border: 4px solid var(--rainbow-4);
            z-index: 10;
        }

        .timeline-card {
            width: 45%;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
        }

        /* Training & Certification */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .training-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            text-align: center;
            transition: all var(--transition-speed);
        }

        .training-card:hover {
            border-color: var(--rainbow-2);
            transform: scale(1.02);
        }

        .training-badge {
            background: #FEF3C7;
            color: #D97706;
            font-size: 0.8rem;
            padding: 4px 12px;
            border-radius: 99px;
            font-weight: 700;
            display: inline-block;
            margin-bottom: 15px;
        }

        /* Table Design */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            background: var(--bg-card);
        }

        .custom-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 0.95rem;
            min-width: 600px;
        }

        .custom-table th, .custom-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .custom-table th {
            background: #F9FAFB;
            font-weight: 700;
            color: var(--text-main);
        }

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

        .highlight-row {
            background: rgba(59, 130, 246, 0.02);
            font-weight: 600;
        }

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

        .portfolio-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

        .portfolio-img-container {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #F3F4F6;
        }

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

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

        .portfolio-content {
            padding: 20px;
        }

        .portfolio-tag {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--rainbow-1);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }

        .portfolio-title {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

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

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 15px;
            background: var(--bg-card);
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
            transition: background var(--transition-speed);
        }

        .faq-question:hover {
            background: #F9FAFB;
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: transform var(--transition-speed);
            color: var(--text-muted);
        }

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

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-bottom: 20px;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--rainbow-1);
        }

        /* Testimonials */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            position: relative;
        }

        .quote-icon {
            font-size: 3rem;
            color: rgba(59, 130, 246, 0.1);
            position: absolute;
            top: 15px;
            right: 20px;
            line-height: 1;
        }

        .user-rating {
            color: #F59E0B;
            margin-bottom: 12px;
        }

        .testimonial-text {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }

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

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1rem;
        }

        .user-meta h4 {
            font-size: 0.95rem;
            margin-bottom: 2px;
        }

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

        /* Form section */
        .form-section {
            background: radial-gradient(circle at right bottom, rgba(59, 130, 246, 0.04) 0%, rgba(255, 62, 136, 0.04) 100%);
        }

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

        .contact-info {
            padding-right: 20px;
        }

        .info-item {
            margin-bottom: 30px;
        }

        .info-title {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--rainbow-5);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .qr-card {
            display: inline-block;
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 12px;
            margin-top: 15px;
            text-align: center;
        }

        .qr-card img {
            width: 150px;
            height: 150px;
            object-fit: cover;
            display: block;
            margin: 0 auto 10px;
        }

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

        /* Form styling */
        .app-form {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

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

        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            background: #F9FAFB;
            transition: border-color var(--transition-speed);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--rainbow-4);
            background: #fff;
        }

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

        /* Articles & Knowledge */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all var(--transition-speed);
        }

        .article-card:hover {
            border-color: var(--rainbow-1);
            transform: translateY(-3px);
        }

        .article-title {
            font-size: 1.1rem;
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .article-link {
            color: var(--rainbow-4);
            text-decoration: none;
            font-weight: 700;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* Footer */
        .footer {
            background: #111827;
            color: #9CA3AF;
            padding: 80px 0 30px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand h3 {
            color: #fff;
            margin-bottom: 15px;
        }

        .footer-desc {
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-title {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            color: #9CA3AF;
            text-decoration: none;
            transition: color var(--transition-speed);
        }

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

        .footer-links.friends-links a {
            display: inline-block;
            margin-right: 12px;
            background: rgba(255,255,255,0.05);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            margin-bottom: 8px;
        }

        .footer-links.friends-links a:hover {
            background: var(--primary-gradient);
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid #1F2937;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .footer-bottom p {
            font-size: 0.85rem;
        }

        /* Float Widget */
        .float-widget {
            position: fixed;
            right: 20px;
            bottom: 30px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #fff;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            cursor: pointer;
            border: 1px solid var(--border-color);
            transition: all var(--transition-speed);
            position: relative;
        }

        .float-btn:hover {
            transform: scale(1.1);
            border-color: var(--rainbow-1);
        }

        .float-btn svg {
            width: 22px;
            height: 22px;
            fill: var(--text-muted);
            transition: fill var(--transition-speed);
        }

        .float-btn:hover svg {
            fill: var(--rainbow-1);
        }

        /* Hover QR overlay */
        .float-btn .qr-overlay {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            padding: 10px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .float-btn .qr-overlay img {
            width: 120px;
            height: 120px;
            display: block;
        }

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

        /* Responsive */
        @media (max-width: 992px) {
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                flex-direction: row !important;
                margin-bottom: 30px;
            }
            .timeline-dot {
                left: 20px;
            }
            .timeline-card {
                width: calc(100% - 40px);
                margin-left: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }