:root {
            --primary: #4F46E5;
            --rainbow-1: #FF4B5C;
            --rainbow-2: #FF9F43;
            --rainbow-3: #FFC048;
            --rainbow-4: #1DD1A1;
            --rainbow-5: #10AC84;
            --rainbow-6: #2E86DE;
            --rainbow-7: #54A0FF;
            --rainbow-8: #9B5DE5;
            --text-main: #1F2937;
            --text-muted: #4B5563;
            --bg-light: #F9FAFB;
            --bg-white: #FFFFFF;
            --border-color: #E5E7EB;
            --rainbow-gradient: linear-gradient(90deg, var(--rainbow-1), var(--rainbow-2), var(--rainbow-4), var(--rainbow-6), var(--rainbow-8));
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        /* Rainbow Border & Accents */
        .rainbow-text {
            background: var(--rainbow-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 800;
        }

        .rainbow-bg {
            background: var(--rainbow-gradient);
            color: #fff;
        }

        .rainbow-btn {
            background: var(--rainbow-gradient);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(255, 75, 92, 0.3);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .rainbow-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 75, 92, 0.5);
        }

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

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

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

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

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

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
        }

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

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

        .btn-outline {
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
        }

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

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: none;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background: var(--text-main);
            border-radius: 2px;
            transition: 0.3s;
        }

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

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

        .section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 15px;
            position: relative;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        /* Hero (No Image) */
        .hero-section {
            padding: 140px 0 100px 0;
            background: radial-gradient(circle at 10% 20%, rgba(255, 75, 92, 0.05) 0%, rgba(84, 160, 255, 0.05) 90.2%);
            text-align: center;
            border-bottom: none;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 30px;
            background: rgba(79, 70, 229, 0.08);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        h1.hero-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 25px;
            letter-spacing: -0.5px;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px auto;
        }

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

        /* Data Indicators */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 50px;
        }

        .data-card {
            background: var(--bg-white);
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            text-align: center;
            border: 1px solid var(--border-color);
            transition: transform 0.3s ease;
        }

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

        .data-num {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 5px;
        }

        .data-label {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* Software & Service Ability */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--rainbow-gradient);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .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: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin-bottom: 20px;
        }

        .service-title-text {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .tag-item {
            font-size: 12px;
            background: var(--bg-light);
            padding: 2px 8px;
            border-radius: 4px;
            color: var(--text-muted);
        }

        /* Steps Section */
        .step-timeline {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin: 40px 0;
        }

        .step-timeline::before {
            content: '';
            position: absolute;
            top: 30px;
            left: 10%;
            right: 10%;
            height: 4px;
            background: var(--border-color);
            z-index: 1;
        }

        .step-item {
            width: 20%;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 4px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            margin: 0 auto 20px auto;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
        }

        .step-item:nth-child(even) .step-num {
            border-color: var(--rainbow-2);
        }

        .step-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-desc {
            font-size: 12px;
            color: var(--text-muted);
            padding: 0 10px;
        }

        /* Solutions Section */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            display: flex;
            gap: 20px;
        }

        .solution-info h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .solution-info p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        /* Network Section */
        .network-section {
            background: var(--bg-white);
            text-align: center;
        }

        .network-map {
            margin: 30px auto;
            max-width: 600px;
            border: 1px dashed var(--border-color);
            padding: 20px;
            border-radius: 12px;
            background: var(--bg-light);
        }

        .network-list {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .network-badge {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 14px;
        }

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

        .standard-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 12px;
            text-align: center;
        }

        .standard-card h4 {
            margin-top: 15px;
            margin-bottom: 10px;
            font-size: 18px;
        }

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

        .case-card {
            background: var(--bg-white);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .case-image-container {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #eee;
        }

        .case-content {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            font-size: 12px;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            padding: 2px 8px;
            border-radius: 4px;
            margin-bottom: 10px;
        }

        .case-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        /* Review Section */
        .rating-box {
            text-align: center;
            background: linear-gradient(135deg, rgba(255, 75, 92, 0.05) 0%, rgba(155, 93, 229, 0.05) 100%);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            margin-bottom: 50px;
        }

        .rating-score {
            font-size: 72px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .rating-stars {
            color: #FFB800;
            font-size: 24px;
            margin: 10px 0;
        }

        .rating-details {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* Table Responsive */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            background: var(--bg-white);
            margin-top: 30px;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 14px;
        }

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

        .comparison-table th {
            background-color: var(--bg-light);
            font-weight: 700;
        }

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

        /* Match Tool */
        .interactive-tool {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            max-width: 800px;
            margin: 0 auto;
        }

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

        .tool-label {
            display: block;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .tool-options {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
        }

        .tool-option {
            border: 1px solid var(--border-color);
            padding: 12px;
            border-radius: 8px;
            text-align: center;
            cursor: pointer;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .tool-option.active {
            border-color: var(--primary);
            background: rgba(79, 70, 229, 0.05);
            color: var(--primary);
            font-weight: 600;
        }

        .tool-result {
            margin-top: 30px;
            padding: 20px;
            border-radius: 8px;
            background: var(--bg-light);
            border: 1px dashed var(--border-color);
            display: none;
        }

        /* Training */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

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

        .training-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: #E0F2FE;
            color: #0369A1;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }

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

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-question {
            padding: 20px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            color: var(--text-muted);
            font-size: 14px;
        }

        .faq-item.active .faq-answer {
            padding: 0 20px 20px 20px;
            max-height: 200px;
        }

        /* Diagnosis */
        .diagnosis-box {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .diag-step {
            display: flex;
            gap: 15px;
            margin-bottom: 20px;
        }

        .diag-icon {
            font-size: 20px;
            color: var(--rainbow-1);
        }

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

        .glossary-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
        }

        .glossary-card h5 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary);
        }

        .glossary-card p {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .testimonial-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            position: relative;
        }

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

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

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
        }

        .user-info h6 {
            font-size: 14px;
            font-weight: 700;
        }

        .user-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .article-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
        }

        .article-title-link {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
            display: block;
            margin-bottom: 10px;
        }

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

        .article-meta {
            font-size: 12px;
            color: var(--text-muted);
        }

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

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

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

        .contact-qr-container {
            margin-top: 15px;
            padding: 15px;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            display: inline-block;
            max-width: 160px;
        }

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

        .contact-form {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            background-color: var(--bg-light);
            transition: border-color 0.3s;
        }

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

        /* Footer */
        footer {
            background: #111827;
            color: #9CA3AF;
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

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

        .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 10px;
        }

        .friend-links a {
            background: #1F2937;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
        }

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

        /* Floating Widgets */
        .floating-widgets {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
        }

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

        .float-btn-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            padding: 10px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: none;
            width: 120px;
        }

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

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .grid-3, .standard-grid, .case-grid, .testimonial-grid, .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .glossary-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
            }

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

            .menu-toggle {
                display: flex;
            }

            h1.hero-title {
                font-size: 32px;
            }

            .grid-3, .standard-grid, .case-grid, .testimonial-grid, .article-grid, .solution-grid, .training-grid, .contact-layout {
                grid-template-columns: 1fr;
            }

            .step-timeline {
                flex-direction: column;
                gap: 30px;
            }

            .step-timeline::before {
                display: none;
            }

            .step-item {
                width: 100%;
            }

            .tool-options {
                grid-template-columns: 1fr;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

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