:root {
            --primary: #7c3aed;
            --primary-glow: rgba(124, 58, 237, 0.15);
            --gradient-holo: linear-gradient(135deg, #a5f3fc 0%, #f472b6 50%, #c084fc 100%);
            --gradient-button: linear-gradient(90deg, #ec4899, #8b5cf6, #06b6d4);
            --text-dark: #0f172a;
            --text-gray: #475569;
            --text-light: #64748b;
            --bg-base: #fafaff;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --container-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* Base Styles */
        * {
            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(--bg-base);
            color: var(--text-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }

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

        /* Holographic Prism Accents */
        .holo-glow-bg {
            position: absolute;
            width: 600px;
            height: 600px;
            background: var(--gradient-holo);
            filter: blur(160px);
            opacity: 0.18;
            pointer-events: none;
            z-index: 0;
            border-radius: 50%;
        }

        /* Header Navigation */
        header {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            z-index: 1000;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ai-page-logo {
            max-height: 40px;
        }
        .brand-name {
            font-weight: 800;
            font-size: 1.4rem;
            background: var(--gradient-button);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-menu {
            display: flex;
            gap: 20px;
        }
        .nav-menu a {
            color: var(--text-gray);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 12px;
            border-radius: 6px;
        }
        .nav-menu a:hover {
            color: var(--primary);
            background: var(--primary-glow);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-register {
            background: var(--gradient-button);
            color: #fff;
            padding: 8px 18px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.875rem;
            box-shadow: 0 4px 15px rgba(236, 72, 153, 0.25);
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-register:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(236, 72, 153, 0.4);
            color: #ffffff;
        }
        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-dark);
        }

        /* Hero Section (strictly no background images/promo images) */
        .hero-section {
            position: relative;
            padding: 100px 0 80px 0;
            text-align: center;
            overflow: hidden;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.03);
            margin-bottom: 24px;
        }
        .hero-badge span {
            background: var(--gradient-button);
            width: 8px;
            height: 8px;
            border-radius: 50%;
        }
        .hero-title {
            font-size: 3rem;
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            color: var(--text-dark);
        }
        .hero-title span {
            background: var(--gradient-button);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            max-width: 700px;
            margin: 0 auto 36px auto;
            font-size: 1.125rem;
            color: var(--text-gray);
        }
        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
        }
        .btn-primary {
            background: var(--gradient-button);
            color: #fff !important;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 8px 25px rgba(124, 58, 237, 0.3);
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(124, 58, 237, 0.45);
        }
        .btn-secondary {
            background: var(--bg-card);
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }
        .btn-secondary:hover {
            background: #f8fafc;
            border-color: #cbd5e1;
            transform: translateY(-3px);
        }

        /* Section Layouts */
        section {
            padding: 80px 0;
            position: relative;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
            position: relative;
            z-index: 1;
        }
        .section-tag {
            font-size: 0.875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--primary);
            margin-bottom: 12px;
            display: inline-block;
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-dark);
        }
        .section-desc {
            color: var(--text-light);
            margin-top: 10px;
            font-size: 1rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Data indicators */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: -30px;
            margin-bottom: 50px;
            position: relative;
            z-index: 2;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            text-align: center;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(124, 58, 237, 0.08);
            border-color: #c084fc;
        }
        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 8px;
            background: var(--gradient-button);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-gray);
            font-weight: 500;
        }

        /* Cards Grid */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .card-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        /* General holographic card styling */
        .holo-card {
            background: rgba(255, 255, 255, 0.95);
            border: 1px solid rgba(226, 232, 240, 0.8);
            border-radius: 20px;
            padding: 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.015);
        }
        .holo-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--gradient-holo);
            opacity: 0;
            transition: var(--transition);
        }
        .holo-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(124, 58, 237, 0.08);
            border-color: rgba(192, 132, 252, 0.5);
        }
        .holo-card:hover::before {
            opacity: 1;
        }
        .card-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: var(--primary-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary);
            font-size: 1.5rem;
            font-weight: bold;
        }

        /* Model tags cloud styling */
        .tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            max-width: 1000px;
            margin: 0 auto;
        }
        .model-tag {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-gray);
            transition: var(--transition);
        }
        .model-tag:hover {
            border-color: #ff007f;
            background: linear-gradient(135deg, rgba(165,243,252,0.1), rgba(244,114,182,0.1));
            transform: scale(1.05);
            color: var(--text-dark);
        }

        /* Flow Process Step */
        .process-flow {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            position: relative;
        }
        .process-step {
            flex: 1;
            text-align: center;
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px 20px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
        }
        .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--gradient-button);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 16px auto;
        }
        .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-desc {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        /* Table Design */
        .table-responsive {
            overflow-x: auto;
            background: var(--bg-card);
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            margin-bottom: 40px;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }
        th, td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
        }
        th {
            background-color: #f8fafc;
            color: var(--text-dark);
            font-weight: 700;
        }
        tr:last-child td {
            border-bottom: none;
        }
        .badge-star {
            color: #f59e0b;
            font-weight: bold;
        }

        /* Image Display Grid (for real assets) */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .case-item {
            background: var(--bg-card);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            transition: var(--transition);
        }
        .case-item:hover {
            transform: translateY(-6px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.08);
        }
        .case-img-container {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }
        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .case-item:hover .case-img-container img {
            transform: scale(1.05);
        }
        .case-body {
            padding: 20px;
        }
        .case-tag {
            font-size: 0.75rem;
            background: var(--primary-glow);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 12px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 10px;
        }
        .case-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        /* Interactive Form */
        .form-section-wrapper {
            background: var(--bg-card);
            border-radius: 24px;
            border: 1px solid var(--border-color);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.03);
            padding: 40px;
            max-width: 800px;
            margin: 0 auto;
        }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-group-full {
            grid-column: span 2;
        }
        .form-group label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            background-color: #f8fafc;
            color: var(--text-dark);
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #fff;
            box-shadow: 0 0 0 3px var(--primary-glow);
        }
        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }
        .submit-btn-container {
            text-align: center;
            margin-top: 30px;
        }

        /* FAQ Accordion */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-header {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            background: #fff;
        }
        .faq-header:hover {
            background: #fcfcfe;
        }
        .faq-icon {
            transition: var(--transition);
            color: var(--primary);
        }
        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            border-top: 0 solid var(--border-color);
        }
        .faq-content {
            padding: 20px 24px;
            font-size: 0.925rem;
            color: var(--text-gray);
            line-height: 1.7;
        }
        .faq-item.active .faq-body {
            max-height: 500px;
            border-top-width: 1px;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* Reviews / Testimonials */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
            position: relative;
        }
        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .review-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gradient-holo);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            font-size: 0.9rem;
        }
        .review-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        .review-info p {
            font-size: 0.75rem;
            color: var(--text-light);
        }
        .review-text {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.6;
        }

        /* Article List & Knowledge base */
        .article-section {
            background-color: #f8fafc;
        }
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: var(--bg-card);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 24px;
            transition: var(--transition);
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }
        .article-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .article-title a {
            color: var(--text-dark);
        }
        .article-title a:hover {
            color: var(--primary);
        }
        .article-desc {
            font-size: 0.875rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .article-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Contact Details & QR Area */
        .contact-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        .contact-info-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .contact-item-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 12px;
        }
        .contact-label {
            font-size: 0.8rem;
            color: var(--text-light);
            text-transform: uppercase;
            margin-bottom: 6px;
        }
        .contact-val {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        .qr-section {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .qr-box {
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .qr-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .qr-info h4 {
            font-weight: 700;
            margin-bottom: 6px;
        }
        .qr-info p {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        /* Floating Widgets */
        .floating-widget {
            position: fixed;
            bottom: 40px;
            right: 40px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }
        .float-btn {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.2rem;
            position: relative;
        }
        .float-btn:hover {
            transform: scale(1.08);
            background: var(--gradient-holo);
            border-color: transparent;
            color: #fff;
        }
        .float-btn .tooltip {
            position: absolute;
            right: 64px;
            top: 50%;
            transform: translateY(-50%) translateX(10px);
            background: var(--text-dark);
            color: #fff;
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 0.75rem;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }
        .float-btn:hover .tooltip {
            opacity: 1;
            transform: translateY(-50%) translateX(0);
        }
        .qr-float-card {
            position: absolute;
            right: 64px;
            bottom: 0;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
        }
        .qr-float-card img {
            width: 130px;
            height: 130px;
            margin-bottom: 8px;
        }
        .qr-float-card p {
            font-size: 0.75rem;
            color: var(--text-dark);
            font-weight: 600;
        }

        /* Footer */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
            border-top: 1px solid #1e293b;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            color: #fff;
            font-weight: 800;
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            line-height: 1.6;
            margin-bottom: 20px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 20px;
            font-size: 1rem;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #94a3b8;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }
        .friend-links {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
            font-size: 0.8rem;
            line-height: 1.8;
        }
        .friend-links span {
            color: #475569;
            margin-right: 10px;
        }
        .friend-links a {
            color: #64748b;
            margin-right: 15px;
            display: inline-block;
        }
        .friend-links a:hover {
            color: #94a3b8;
        }

        /* Timeline and details */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding-left: 30px;
            border-left: 2px solid var(--border-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 40px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -37px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--gradient-button);
            border: 4px solid var(--bg-base);
        }
        .timeline-time {
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .timeline-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-gallery {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #ffffff;
                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;
            }
            .mobile-nav-toggle {
                display: block;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .card-grid-3, .card-grid-4, .stats-grid, .case-gallery, .review-grid, .article-grid, .footer-grid, .process-flow {
                grid-template-columns: 1fr;
                flex-direction: column;
            }
            .process-flow {
                gap: 30px;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .contact-container {
                grid-template-columns: 1fr;
            }
            .contact-info-list {
                grid-template-columns: 1fr;
            }
        }