:root {
            --primary: #0F4C81;
            --primary-light: #1D70B8;
            --accent: #00F0FF;
            --accent-dark: #00B4D8;
            --bg-base: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-main: #0F172A;
            --text-muted: #475569;
            --border-color: #E2E8F0;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
            --container-max: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-base);
        }

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

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

        /* Typography */
        h1, h2, h3, h4 {
            color: var(--text-main);
            font-weight: 700;
            line-height: 1.3;
        }

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

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

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 8px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(15, 76, 129, 0.3);
        }

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

        .btn-accent {
            background-color: var(--accent-dark);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(0, 180, 216, 0.3);
        }

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

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

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

        /* Header Styling */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

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

        .brand img {
            height: 40px;
            width: auto;
        }

        .nav-menu {
            display: flex;
            gap: 24px;
            list-style: none;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 4px;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
            border-bottom: 2px solid var(--primary);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text-main);
            transition: var(--transition);
        }

        /* Hero Section (No Images!) */
        .hero {
            background: linear-gradient(135deg, #F0F7FF 0%, #E0F2FE 100%);
            padding: 100px 0 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0,240,255,0.08) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            background-color: rgba(15, 76, 129, 0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(15, 76, 129, 0.15);
        }

        .hero h1 {
            font-size: 44px;
            max-width: 850px;
            margin: 0 auto 20px auto;
            color: var(--primary);
        }

        .hero-subtitle {
            font-size: 20px;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 36px auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

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

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

        .section-header h2 {
            font-size: 32px;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
        }

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

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background-color: var(--bg-card);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .stat-card .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-card .label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

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

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            align-items: center;
        }

        /* Cards */
        .card {
            background-color: var(--bg-card);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .card-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(15, 76, 129, 0.08);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 20px;
        }

        .card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
        }

        /* Platform Introduction Section */
        .platform-intro-box {
            background: linear-gradient(135deg, #FFFFFF 0%, #F1F5F9 100%);
            border-radius: 16px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .tag-item {
            background-color: rgba(15, 76, 129, 0.05);
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(15, 76, 129, 0.1);
            transition: var(--transition);
        }

        .tag-item:hover {
            background-color: var(--primary);
            color: #ffffff;
        }

        /* Process Steps */
        .process-flow {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 40px;
        }

        .process-flow::before {
            content: '';
            position: absolute;
            top: 30px;
            left: 50px;
            right: 50px;
            height: 2px;
            background-color: var(--border-color);
            z-index: 1;
        }

        .process-step {
            position: relative;
            z-index: 2;
            text-align: center;
            flex: 1;
        }

        .step-num {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #ffffff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            border: 4px solid var(--bg-base);
            box-shadow: var(--shadow-md);
        }

        .process-step h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            padding: 0 15px;
        }

        /* Evaluation Section */
        .eval-box {
            background-color: #FFFFFF;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }

        .eval-header {
            background-color: var(--primary);
            color: #ffffff;
            padding: 30px;
            text-align: center;
        }

        .eval-score-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
            margin-top: 10px;
        }

        .eval-score {
            font-size: 48px;
            font-weight: 800;
            color: var(--accent);
        }

        .eval-stars {
            color: #FBBF24;
            font-size: 24px;
        }

        .eval-table-wrapper {
            overflow-x: auto;
        }

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

        .eval-table th, .eval-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
        }

        .eval-table th {
            background-color: #F8FAFC;
            font-weight: 600;
            color: var(--text-main);
        }

        .eval-table tbody tr:hover {
            background-color: #F1F5F9;
        }

        .badge-advantage {
            background-color: #D1FAE5;
            color: #065F46;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
        }

        /* Token Comparison */
        .token-comparison-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .token-card {
            background-color: var(--bg-card);
            border-radius: 10px;
            border: 1px solid var(--border-color);
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .token-info h4 {
            font-size: 16px;
            margin-bottom: 4px;
        }

        .token-info p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .token-price {
            text-align: right;
        }

        .price-val {
            font-size: 20px;
            font-weight: 700;
            color: #EF4444;
        }

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

        /* Image Showcase */
        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .showcase-item {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            background-color: #fff;
            transition: var(--transition);
        }

        .showcase-item:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-lg);
        }

        .showcase-img-container {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background-color: #E2E8F0;
        }

        .showcase-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .showcase-square {
            aspect-ratio: 1/1;
        }

        .showcase-body {
            padding: 20px;
        }

        .showcase-body h4 {
            font-size: 16px;
            margin-bottom: 6px;
        }

        .showcase-body p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Review Grid */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background-color: var(--bg-card);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .review-content {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            font-style: italic;
        }

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

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #ffffff;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .user-meta h4 {
            font-size: 14px;
        }

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

        /* FAQ Section */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background-color: var(--bg-card);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-trigger {
            width: 100%;
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
        }

        .faq-icon {
            font-size: 20px;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-panel {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #F8FAFC;
        }

        .faq-content {
            padding: 20px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            line-height: 1.6;
        }

        .faq-item.active .faq-panel {
            max-height: 300px;
        }

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

        /* Articles & Knowledge base */
        .article-card {
            background-color: var(--bg-card);
            border-radius: 10px;
            border: 1px solid var(--border-color);
            padding: 24px;
            transition: var(--transition);
        }

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

        .article-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .article-card h4 {
            font-size: 16px;
            margin-bottom: 12px;
        }

        .article-card a {
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .contact-info-panel {
            background-color: var(--primary);
            color: #ffffff;
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow-md);
        }

        .contact-info-panel h3 {
            color: #ffffff;
            font-size: 24px;
            margin-bottom: 24px;
        }

        .contact-method-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 40px;
        }

        .contact-method-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .contact-method-icon {
            font-size: 20px;
            color: var(--accent);
            margin-top: 3px;
        }

        .contact-method-text h4 {
            color: #ffffff;
            font-size: 16px;
            margin-bottom: 4px;
        }

        .contact-method-text p, .contact-method-text a {
            color: rgba(255, 255, 255, 0.8);
            font-size: 14px;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
        }

        .qr-item {
            text-align: center;
        }

        .qr-item img {
            width: 120px;
            height: 120px;
            border-radius: 8px;
            background-color: #ffffff;
            padding: 6px;
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.9);
        }

        .form-panel {
            background-color: var(--bg-card);
            border-radius: 16px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
        }

        .form-panel h3 {
            font-size: 22px;
            margin-bottom: 20px;
        }

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

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            background-color: #F8FAFC;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #ffffff;
            box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.15);
        }

        /* Footer & Links */
        footer {
            background-color: #0B1E33;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px 0;
            font-size: 14px;
            border-top: 4px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo-area img {
            height: 40px;
            margin-bottom: 16px;
        }

        .footer-logo-area p {
            line-height: 1.8;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 16px;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--accent);
        }

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .friend-links-box {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .friend-links-box span {
            font-weight: 600;
            color: #ffffff;
        }

        .friend-links-box a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 12px;
        }

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

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: 50%;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary-light);
            transform: scale(1.1);
        }

        .float-tooltip {
            position: absolute;
            right: 60px;
            background-color: var(--bg-card);
            color: var(--text-main);
            padding: 10px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            width: 140px;
            text-align: center;
            font-size: 12px;
        }

        .float-tooltip img {
            width: 100%;
            height: auto;
            margin-bottom: 4px;
        }

        .float-btn:hover .float-tooltip {
            opacity: 1;
            visibility: visible;
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .showcase-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-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-color: var(--bg-card);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 16px;
                box-shadow: var(--shadow-md);
            }
            .nav-menu.show {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .contact-layout {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .process-flow {
                flex-direction: column;
                gap: 30px;
            }
            .process-flow::before {
                display: none;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .showcase-grid {
                grid-template-columns: 1fr;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .token-comparison-list {
                grid-template-columns: 1fr;
            }
        }

        /* Screen reader utility */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }