:root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #3b82f6 50%, #06b6d4 100%);
            --accent-gradient: linear-gradient(135deg, #ec4899 0%, #f43f5e 50%, #eab308 100%);
            --bg-light: #f8fafc;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --border-color: #e2e8f0;
            --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        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;
            overflow-x: hidden;
        }

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

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

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

        /* Header & Nav */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition);
        }

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

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

        .logo-wrap img {
            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 {
            background: var(--primary-gradient);
            color: white;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(59, 130, 246, 0.3);
        }

        .nav-btn:hover {
            opacity: 0.9;
            transform: translateY(-1px);
        }

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

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

        /* Hero Section */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.15) 0%, rgba(255, 255, 255, 0) 50%),
                        radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.1) 0%, rgba(255, 255, 255, 0) 50%);
            text-align: center;
            position: relative;
        }

        .hero h1 {
            font-size: 42px;
            line-height: 1.2;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 40px;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        .btn-main {
            background: var(--primary-gradient);
            color: white;
            padding: 15px 35px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 700;
            box-shadow: 0 10px 20px rgba(59, 130, 246, 0.2);
        }

        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px rgba(59, 130, 246, 0.3);
        }

        .btn-sub {
            background: white;
            color: var(--text-dark);
            padding: 15px 35px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 700;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
        }

        .btn-sub:hover {
            background: #f1f5f9;
            transform: translateY(-2px);
        }

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .stat-card {
            background: white;
            padding: 30px 20px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(255, 255, 255, 0.8);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* Section Global Styles */
        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 15px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 15px;
        }

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

        /* About Us & Software intro */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 15px;
        }

        .about-feature {
            display: flex;
            gap: 15px;
            margin-bottom: 20px;
        }

        .about-feature-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: var(--primary-gradient);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }

        .about-feature-detail h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 5px;
        }

        .about-feature-detail p {
            font-size: 14px;
            margin: 0;
        }

        /* AIGC Service Matrix */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: white;
            padding: 40px 30px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: rgba(79, 70, 229, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            color: var(--primary);
            font-size: 24px;
            font-weight: 700;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tag-item {
            font-size: 12px;
            padding: 4px 10px;
            background: #f1f5f9;
            border-radius: 4px;
            color: var(--text-muted);
        }

        /* AI Platforms Tag Cloud */
        .platform-cloud {
            margin-top: 50px;
            padding: 30px;
            background: white;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            text-align: center;
        }

        .platform-cloud h4 {
            margin-bottom: 20px;
            font-size: 16px;
            color: var(--text-muted);
        }

        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .cloud-tag {
            padding: 6px 14px;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 13px;
            font-weight: 600;
            transition: var(--transition);
        }

        .cloud-tag:hover {
            background: var(--primary);
            color: white;
            transform: scale(1.05);
        }

        /* Workflow Steps */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .workflow-step {
            position: relative;
            background: white;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 30px;
            width: 40px;
            height: 40px;
            background: var(--accent-gradient);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            box-shadow: 0 4px 10px rgba(236, 72, 153, 0.4);
        }

        .workflow-step h3 {
            margin-top: 10px;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .workflow-step p {
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .solution-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

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

        .solution-content {
            padding: 30px;
        }

        .solution-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .solution-content p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
        }

        .solution-list {
            list-style: none;
        }

        .solution-list li {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            position: relative;
            padding-left: 20px;
        }

        .solution-list li::before {
            content: "✓";
            color: #10b981;
            position: absolute;
            left: 0;
            font-weight: bold;
        }

        /* Service Network */
        .network-section {
            background: linear-gradient(rgba(248, 250, 252, 0.9), rgba(248, 250, 252, 0.9));
            position: relative;
        }

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .network-map {
            background: white;
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
            text-align: center;
        }

        .network-map-placeholder {
            border: 2px dashed var(--border-color);
            border-radius: 12px;
            padding: 60px 20px;
            background: #fdfdfd;
        }

        .map-icon {
            font-size: 48px;
            margin-bottom: 20px;
        }

        .network-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .network-item {
            background: white;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }

        .network-item h4 {
            font-size: 16px;
            margin-bottom: 5px;
            color: var(--primary);
        }

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

        /* Standard Workflow & Technical standard */
        .standard-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .std-timeline {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .std-node {
            display: flex;
            gap: 20px;
            background: white;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }

        .std-badge {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
        }

        .std-tech-box {
            background: white;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }

        .std-tech-box h3 {
            font-size: 20px;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--bg-light);
            padding-bottom: 10px;
        }

        .tech-list-item {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid #f1f5f9;
            font-size: 14px;
        }

        .tech-list-item span:first-child {
            color: var(--text-muted);
            font-weight: 500;
        }

        .tech-list-item span:last-child {
            font-weight: bold;
            color: var(--text-dark);
        }

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

        .case-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

        .case-media {
            background: #0f172a;
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-detail {
            padding: 30px;
        }

        .case-detail h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .case-detail p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
        }

        .case-meta {
            display: flex;
            justify-content: space-between;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .case-meta span strong {
            color: var(--primary);
        }

        /* Compare Section */
        .compare-table-wrap {
            background: white;
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            overflow-x: auto;
        }

        .score-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .score-title {
            font-size: 22px;
            font-weight: 700;
        }

        .score-badge {
            background: var(--accent-gradient);
            color: white;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 800;
            font-size: 18px;
            box-shadow: 0 4px 15px rgba(244, 63, 94, 0.3);
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

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

        .compare-table tr:hover td {
            background: rgba(241, 245, 249, 0.5);
        }

        .highlight-cell {
            color: var(--primary);
            font-weight: bold;
        }

        /* Token Price Box */
        .token-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .token-table-card {
            background: white;
            border-radius: 20px;
            padding: 30px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

        .token-table-card h3 {
            font-size: 18px;
            margin-bottom: 20px;
            font-weight: 700;
            color: var(--text-dark);
        }

        /* Training section */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .training-card {
            background: white;
            border-radius: 16px;
            padding: 30px 20px;
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

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

        .training-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .training-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .training-tag {
            display: inline-block;
            font-size: 12px;
            background: rgba(6, 182, 212, 0.1);
            color: #0891b2;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: bold;
        }

        /* Interactive form section */
        .match-section {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            color: white;
        }

        .match-section .section-title {
            color: white;
        }

        .match-section .section-desc {
            color: #94a3b8;
        }

        .form-wrap {
            max-width: 800px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 50px;
            border-radius: 24px;
            backdrop-filter: blur(10px);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 30px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group.full-width {
            grid-column: span 2;
        }

        .form-group label {
            font-size: 14px;
            font-weight: 600;
            color: #cbd5e1;
        }

        .form-group input, .form-group select, .form-group textarea {
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.05);
            color: white;
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: var(--primary-light);
            background: rgba(255, 255, 255, 0.08);
        }

        .form-group select option {
            background: #0f172a;
            color: white;
        }

        .submit-btn {
            width: 100%;
            background: var(--primary-gradient);
            color: white;
            border: none;
            padding: 15px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
            transition: var(--transition);
        }

        .submit-btn:hover {
            opacity: 0.95;
            transform: translateY(-1px);
        }

        /* Help Center / FAQ */
        .help-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background: white;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .faq-question {
            padding: 20px;
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: "−";
            transform: rotate(180deg);
        }

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

        .faq-item.active .faq-answer {
            padding: 0 20px 20px;
            max-height: 300px;
        }

        .trouble-shoot {
            background: white;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }

        .trouble-shoot h3 {
            font-size: 18px;
            margin-bottom: 20px;
        }

        .trouble-step {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #f1f5f9;
        }

        .trouble-step:last-child {
            border: none;
            margin: 0;
            padding: 0;
        }

        .trouble-step h4 {
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 5px;
            color: var(--primary);
        }

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

        /* Wiki / Glossary */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

        .wiki-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

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

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

        .review-card {
            background: white;
            padding: 30px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-content {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            position: relative;
        }

        .review-content::before {
            content: "“";
            font-size: 40px;
            color: rgba(79, 70, 229, 0.1);
            position: absolute;
            top: -20px;
            left: -10px;
        }

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

        .review-avatar {
            width: 44px;
            height: 44px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 16px;
        }

        .review-info h4 {
            font-size: 14px;
            font-weight: 700;
        }

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

        /* News & Knowledge base */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

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

        .news-img {
            aspect-ratio: 16/10;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .news-detail {
            padding: 24px;
        }

        .news-detail h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-detail h3 a:hover {
            color: var(--primary);
        }

        .news-detail p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .news-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }

        /* Contact & CTA */
        .contact-section {
            background: linear-gradient(to bottom, #ffffff, #f1f5f9);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

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

        .contact-item-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .contact-item-detail h4 {
            font-size: 16px;
            margin-bottom: 5px;
        }

        .contact-item-detail p {
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .qrcode-item {
            text-align: center;
            flex: 1;
        }

        .qrcode-item img {
            width: 120px;
            height: 120px;
            margin: 0 auto 10px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
        }

        .qrcode-item p {
            font-size: 13px;
            font-weight: 600;
        }

        /* Footer */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 80px 0 30px;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-brand img {
            height: 40px;
            margin-bottom: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-col h4 {
            color: white;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .footer-links a {
            font-size: 14px;
        }

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            text-align: center;
            font-size: 13px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            margin-bottom: 15px;
        }

        .friend-links a {
            color: #64748b;
        }

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

        /* Float elements */
        .float-bar {
            position: fixed;
            right: 20px;
            bottom: 40px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

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

        .float-item:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-2px);
        }

        .float-item .popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: white;
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            border: 1px solid var(--border-color);
            display: none;
            width: 160px;
            text-align: center;
            color: var(--text-dark);
        }

        .float-item:hover .popover {
            display: block;
        }

        .float-item .popover img {
            width: 130px;
            height: 130px;
            margin-bottom: 8px;
        }

        .float-item .popover p {
            font-size: 12px;
            font-weight: 600;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid, .solution-grid, .training-grid, .news-grid, .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .workflow-timeline {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px;
            }
            .standard-grid, .token-grid, .help-grid, .wiki-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 32px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .btn-main, .btn-sub {
                width: 100%;
                max-width: 300px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .about-grid, .network-grid, .case-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
            .form-wrap {
                padding: 20px;
            }
        }

        @media (max-width: 480px) {
            .stats-grid, .service-grid, .solution-grid, .training-grid, .news-grid, .review-grid, .workflow-timeline {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }