:root {
            --primary: #8b5cf6;
            --primary-light: #a78bfa;
            --primary-dark: #6d28d9;
            --secondary: #ec4899;
            --accent: #f43f5e;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --bg-light: #fafafa;
            --bg-white: #ffffff;
            --bg-gradient: linear-gradient(135deg, #f5f3ff 0%, #fdf2f8 100%);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

        * {
            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-dark);
            background-color: var(--bg-light);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

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

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-dark);
        }

        h2 {
            font-size: 2rem;
            text-align: center;
            margin-bottom: 1rem;
            position: relative;
        }

        h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            margin: 10px auto 0;
            border-radius: 2px;
        }

        p {
            color: var(--text-muted);
        }

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

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

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(139, 92, 246, 0.05);
            transform: translateY(-2px);
        }

        /* Header & Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            height: 70px;
            display: flex;
            align-items: center;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .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-menu a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

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

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-dark);
            transition: var(--transition);
        }

        /* Sections General */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-desc {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
            font-size: 1.1rem;
        }

        /* Hero Section (No Image, Purple Gradient Text & Geometric Layout) */
        .hero {
            padding-top: 150px;
            padding-bottom: 100px;
            background: var(--bg-gradient);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 50%;
            background: radial-gradient(circle, rgba(167, 139, 250, 0.15) 0%, transparent 70%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            right: -10%;
            width: 45%;
            height: 50%;
            background: radial-gradient(circle, rgba(236, 72, 153, 0.15) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(139, 92, 246, 0.1);
            color: var(--primary-dark);
            border-radius: 9999px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(139, 92, 246, 0.2);
        }

        .hero h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            background: linear-gradient(135deg, var(--text-dark) 30%, var(--primary-dark) 70%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 24px;
        }

        .hero-sub {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 35px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        /* Metric Cards */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 50px;
        }

        .metric-card {
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.8);
            border-radius: 16px;
            padding: 24px;
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-light);
        }

        .metric-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* About Us & Platform Intro */
        .about-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            align-items: center;
        }

        .about-text {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .feature-bullets {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .feature-bullets li {
            position: relative;
            padding-left: 25px;
            font-weight: 500;
        }

        .feature-bullets li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-weight: bold;
        }

        /* Services section */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .service-card {
            background: var(--bg-white);
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(139, 92, 246, 0.05);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(139, 92, 246, 0.1);
            border-color: var(--primary-light);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: rgba(139, 92, 246, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .service-card h3 {
            margin-bottom: 12px;
            font-size: 1.25rem;
        }

        /* Flow Process */
        .flow-timeline {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            position: relative;
        }

        .flow-step {
            background: var(--bg-white);
            padding: 30px;
            border-radius: 16px;
            border-top: 4px solid var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
            position: relative;
        }

        .step-num {
            position: absolute;
            top: -20px;
            right: 20px;
            font-size: 3rem;
            font-weight: 900;
            color: rgba(139, 92, 246, 0.1);
        }

        /* Token Comparison Table */
        .table-responsive {
            overflow-x: auto;
            background: var(--bg-white);
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        th, td {
            padding: 16px 24px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        th {
            background-color: rgba(139, 92, 246, 0.05);
            color: var(--text-dark);
            font-weight: 700;
        }

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

        .badge {
            display: inline-block;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: bold;
        }

        .badge-success {
            background-color: rgba(16, 185, 129, 0.1);
            color: #10b981;
        }

        /* Cases & Media (Images properly handled) */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .case-card {
            background: var(--bg-white);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .case-img-container {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: #f1f5f9;
        }

        .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-info {
            padding: 24px;
        }

        .case-info h3 {
            margin-bottom: 10px;
        }

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

        .review-card {
            background: var(--bg-white);
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
            border: 1px solid rgba(0, 0, 0, 0.03);
        }

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

        .review-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }

        .review-user h4 {
            font-size: 1rem;
        }

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

        /* FAQ Section (Accordion) */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: 12px;
            border: 1px solid rgba(0, 0, 0, 0.05);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .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(139, 92, 246, 0.02);
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Forms & Interactive Area */
        .form-section-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 40px;
        }

        .contact-info-card {
            background: var(--bg-white);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

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

        .info-icon {
            color: var(--primary);
            font-size: 1.25rem;
        }

        .qrcode-container {
            display: flex;
            gap: 20px;
            margin-top: 15px;
            align-items: center;
        }

        .qrcode-box {
            width: 110px;
            text-align: center;
        }

        .qrcode-box img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            border: 1px solid rgba(0, 0, 0, 0.1);
        }

        .qrcode-box span {
            font-size: 0.8rem;
            display: block;
            margin-top: 5px;
            color: var(--text-muted);
        }

        .form-card {
            background: var(--bg-white);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(139, 92, 246, 0.05);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid rgba(0, 0, 0, 0.1);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
        }

        /* Article List & Tech News */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .news-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 24px;
            border: 1px solid rgba(0, 0, 0, 0.05);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.01);
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-light);
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--secondary);
            font-weight: 600;
            margin-bottom: 10px;
            display: block;
        }

        .news-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 15px;
        }

        /* Footer & Friendly Links */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 20px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: white;
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col a:hover {
            color: white;
        }

        .footer-links-row {
            border-top: 1px solid #1e293b;
            padding-top: 25px;
            margin-bottom: 25px;
        }

        .footer-links-row p {
            color: #64748b;
            margin-bottom: 10px;
        }

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

        .links-flex a {
            color: #94a3b8;
        }

        .links-flex a:hover {
            color: white;
        }

        .copyright-bar {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            color: #64748b;
        }

        /* Float Customer Service */
        .float-cs {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cs-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            position: relative;
        }

        .cs-qr-hover {
            position: absolute;
            bottom: 60px;
            right: 0;
            width: 150px;
            background: white;
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            display: none;
            text-align: center;
            color: var(--text-dark);
        }

        .cs-qr-hover img {
            width: 100%;
            height: auto;
            border-radius: 4px;
        }

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

        /* Responsive adjustments */
        @media (max-width: 992px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: white;
                padding: 20px;
                border-bottom: 1px solid rgba(0, 0, 0, 0.1);
            }

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

            .menu-toggle {
                display: flex;
            }
        }