:root {
            --primary: #2ec4b6;
            --primary-hover: #20bf55;
            --primary-dark: #0f9f90;
            --bg-light: #f4fbf7;
            --bg-white: #ffffff;
            --text-dark: #1a202c;
            --text-muted: #4a5568;
            --border-color: #e2e8f0;
            --accent: #ff9f1c;
            --max-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

        ul {
            list-style: none;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            font-size: 1rem;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(46, 196, 182, 0.4);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #ffffff;
            transform: translateY(-2px);
        }

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

        .btn-outline:hover {
            background-color: var(--primary);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* Header Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            z-index: 1000;
            transition: var(--transition);
        }

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

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

        .logo-area img {
            max-height: 40px;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .nav-link {
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 12px;
            border-radius: 6px;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary-dark);
            background-color: rgba(46, 196, 182, 0.08);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: var(--text-dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* Hero Section (No Images) */
        .hero {
            padding: 160px 0 100px;
            background: linear-gradient(135deg, #ffffff 0%, #e6f7f4 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(46, 196, 182, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(32, 191, 85, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

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

        .hero-badge {
            display: inline-block;
            background-color: rgba(46, 196, 182, 0.1);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(46, 196, 182, 0.2);
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            color: var(--text-dark);
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 35px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 50px;
        }

        /* Stats Cards (Inside Hero / First Section) */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background-color: var(--bg-white);
            padding: 25px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
            border: 1px solid rgba(46, 196, 182, 0.1);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(46, 196, 182, 0.08);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1;
            margin-bottom: 10px;
        }

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

        /* Section Global Settings */
        section {
            padding: 90px 0;
            background-color: var(--bg-white);
        }

        .section-alt {
            background-color: var(--bg-light);
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 60px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            color: var(--text-dark);
            margin-bottom: 15px;
            font-weight: 700;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        /* About Us Section */
        .about-box {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .about-text p {
            margin-bottom: 20px;
            color: var(--text-muted);
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            color: var(--text-dark);
        }

        .about-feat-item svg {
            color: var(--primary);
            flex-shrink: 0;
        }

        .about-image-wrapper {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
        }

        .about-image-wrapper img {
            width: 100%;
            display: block;
            object-fit: cover;
        }

        /* Service Systems */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .service-card {
            background-color: var(--bg-white);
            padding: 40px 30px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 45px rgba(0, 0, 0, 0.06);
            border-color: transparent;
        }

        .service-card:hover::before {
            transform: scaleY(1);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            background-color: rgba(46, 196, 182, 0.1);
            color: var(--primary-dark);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
        }

        .service-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--text-dark);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .tag-cloud {
            margin-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .cloud-tag {
            background-color: var(--bg-light);
            color: var(--primary-dark);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* Flow steps */
        .flow-container {
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }

        .flow-step {
            display: flex;
            align-items: flex-start;
            gap: 30px;
            margin-bottom: 40px;
            position: relative;
        }

        .flow-step:not(:last-child)::after {
            content: '';
            position: absolute;
            left: 25px;
            top: 60px;
            bottom: -30px;
            width: 2px;
            background-color: var(--border-color);
        }

        .flow-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 4px 10px rgba(46, 196, 182, 0.3);
        }

        .flow-info {
            background-color: var(--bg-white);
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.02);
            flex-grow: 1;
        }

        .flow-info h4 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .flow-info p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

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

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        .comparison-table th, .comparison-table td {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table th {
            background-color: #f8fafc;
            color: var(--text-dark);
            font-weight: 700;
        }

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

        .comparison-table td strong {
            color: var(--primary-dark);
        }

        .rating-badge {
            background-color: var(--accent);
            color: #ffffff;
            padding: 8px 15px;
            border-radius: 30px;
            display: inline-block;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .star-rating {
            color: var(--accent);
            letter-spacing: 2px;
        }

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

        .solution-card {
            background-color: var(--bg-white);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }

        .solution-card:hover {
            border-color: var(--primary);
            box-shadow: 0 12px 25px rgba(46, 196, 182, 0.06);
            transform: translateY(-3px);
        }

        .solution-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .solution-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Token Price Board */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
        }

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

        .token-card:hover {
            border-color: var(--primary);
            box-shadow: 0 10px 25px rgba(46, 196, 182, 0.05);
        }

        .token-name {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .token-price {
            font-size: 1.8rem;
            color: var(--primary-dark);
            font-weight: 800;
            margin-bottom: 15px;
        }

        .token-price span {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
        }

        /* Case Center */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 30px;
        }

        .case-card {
            background-color: var(--bg-white);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
        }

        .case-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .case-info {
            padding: 25px;
        }

        .case-tag {
            display: inline-block;
            background-color: rgba(46, 196, 182, 0.1);
            color: var(--primary-dark);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .case-info h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .case-info p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* Training section */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background: linear-gradient(145deg, #ffffff, #f0fdf9);
            border: 1px solid rgba(46, 196, 182, 0.15);
            border-radius: 16px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.01);
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(46, 196, 182, 0.1);
        }

        .training-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .training-cert {
            font-size: 0.85rem;
            color: var(--primary-dark);
            font-weight: 600;
            background-color: rgba(46, 196, 182, 0.08);
            padding: 3px 8px;
            border-radius: 4px;
            display: inline-block;
        }

        /* Testimonials */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 25px;
        }

        .review-card {
            background-color: var(--bg-white);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.02);
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .avatar-placeholder {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
        }

        .user-name {
            font-weight: 700;
            color: var(--text-dark);
        }

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

        .review-content {
            color: var(--text-muted);
            font-size: 0.95rem;
            font-style: italic;
        }

        /* Form section */
        .form-section {
            background-color: var(--bg-light);
            border-top: 1px solid var(--border-color);
        }

        .form-wrapper {
            max-width: 700px;
            margin: 0 auto;
            background-color: var(--bg-white);
            padding: 45px;
            border-radius: 24px;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.04);
            border: 1px solid var(--border-color);
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--text-dark);
        }

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

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 196, 182, 0.15);
        }

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

        /* FAQ Accordion */
        .faq-wrapper {
            max-width: 850px;
            margin: 0 auto;
        }

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

        .faq-header-btn {
            width: 100%;
            padding: 20px 25px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-icon-arrow {
            transition: var(--transition);
            color: var(--primary-dark);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
        }

        .faq-content {
            padding: 0 25px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 1px solid transparent;
        }

        .faq-item.active .faq-body {
            max-height: 1000px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
        }

        .faq-item.active .faq-icon-arrow {
            transform: rotate(180deg);
        }

        .faq-item.active .faq-content {
            border-top-color: var(--border-color);
        }

        /* Terms / Dictionary grid */
        .terms-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 15px;
        }

        .term-badge {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 12px 18px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition);
        }

        .term-badge:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

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

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

        .article-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
            border-color: var(--primary);
        }

        .article-card h4 {
            margin-bottom: 12px;
            font-size: 1.15rem;
        }

        .article-card a {
            color: var(--text-dark);
            font-weight: 700;
        }

        .article-card a:hover {
            color: var(--primary-dark);
        }

        /* Footer & Links */
        .footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 80px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer h3, .footer h4 {
            color: #ffffff;
            margin-bottom: 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 50px;
            margin-bottom: 60px;
        }

        .footer-brand p {
            margin-top: 15px;
            margin-bottom: 20px;
            line-height: 1.8;
        }

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

        .footer-links ul li a {
            color: #94a3b8;
        }

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

        .footer-contact p {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .friend-links {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
        }

        .friend-links a {
            color: #64748b;
            font-size: 0.9rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
        }

        /* Floating customer service */
        .float-cs {
            position: fixed;
            right: 30px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .cs-btn {
            width: 54px;
            height: 54px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(46, 196, 182, 0.4);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

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

        .cs-popup {
            position: absolute;
            right: 70px;
            bottom: 0;
            background-color: var(--bg-white);
            padding: 20px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            width: 240px;
            display: none;
            border: 1px solid var(--border-color);
        }

        .cs-popup img {
            width: 100%;
            height: auto;
            border-radius: 6px;
            margin-top: 10px;
        }

        .cs-popup-title {
            font-weight: 700;
            color: var(--text-dark);
            font-size: 0.95rem;
            margin-bottom: 5px;
        }

        .cs-popup-desc {
            color: var(--text-muted);
            font-size: 0.8rem;
            margin-bottom: 10px;
        }

        /* Responsive Grid fixes */
        @media (max-width: 991px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .about-box {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--bg-white);
                padding: 20px;
                border-top: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
            }
            .nav-menu.open {
                display: flex;
            }
            .hamburger {
                display: flex;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .hero-btns .btn {
                width: 100%;
                max-width: 300px;
            }
            .form-row {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-brand {
                grid-column: span 1;
            }
        }