/* CSS reset & variables */
        :root {
            --primary: #7928ca;
            --primary-glow: rgba(121, 40, 202, 0.15);
            --secondary: #00dfd8;
            --accent: #ff007f;
            --bg-main: #f8fafc;
            --bg-card: #ffffff;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --border-color: #e2e8f0;
            --max-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            
            /* High-saturation gradient */
            --gradient-neon: linear-gradient(135deg, #ff007f 0%, #7928ca 50%, #00dfd8 100%);
            --gradient-soft: linear-gradient(135deg, rgba(255, 0, 127, 0.03) 0%, rgba(121, 40, 202, 0.03) 50%, rgba(0, 223, 216, 0.03) 100%);
        }

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

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

        body {
            overflow-x: hidden;
            background-image: var(--gradient-soft);
            background-attachment: fixed;
        }

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

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-dark);
        }

        h2 {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
            left: 50%;
            transform: translateX(-50%);
        }

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

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

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 30px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            gap: 8px;
        }

        .btn-neon {
            background: var(--gradient-neon);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(121, 40, 202, 0.4);
        }

        .btn-neon:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(121, 40, 202, 0.6);
        }

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

        .btn-outline:hover {
            background: rgba(121, 40, 202, 0.05);
            transform: translateY(-2px);
        }

        /* Header & Navigation */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

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

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

        .brand-name {
            font-size: 1.4rem;
            font-weight: 900;
            background: var(--gradient-neon);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }

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

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

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

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

        /* Section Layout */
        section {
            padding: 90px 0;
            position: relative;
        }

        /* Hero Section (No Image Allowed) */
        .hero {
            padding: 120px 0 100px;
            text-align: center;
            background: radial-gradient(circle at top right, rgba(0, 223, 216, 0.1), transparent 40%),
                        radial-gradient(circle at bottom left, rgba(255, 0, 127, 0.08), transparent 40%);
        }

        .hero-h1 {
            font-size: 3.5rem;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .hero-h1 span {
            background: var(--gradient-neon);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 60px;
            flex-wrap: wrap;
        }

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(121, 40, 202, 0.03);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 15px 35px rgba(121, 40, 202, 0.08);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--gradient-neon);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* About & Platform Intro */
        .about-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

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

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

        .about-feat-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .about-feat-icon {
            color: var(--accent);
            font-size: 1.5rem;
            line-height: 1;
        }

        .about-feat-text h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }

        .about-feat-text p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

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

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

        .service-card:hover {
            transform: translateY(-8px);
            border-color: var(--border-color);
            box-shadow: 0 20px 40px rgba(121, 40, 202, 0.08);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            background: var(--primary-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--primary);
            font-size: 1.8rem;
        }

        .service-card h3 {
            font-size: 1.4rem;
            margin-bottom: 14px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

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

        .service-tag {
            background: #f1f5f9;
            color: var(--text-muted);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* Model Brand Cloud */
        .model-cloud {
            margin-top: 60px;
            background: var(--bg-card);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .model-cloud h4 {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .model-tags-wrap {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }

        .model-tag {
            padding: 8px 18px;
            background: #f8fafc;
            border: 1px solid var(--border-color);
            border-radius: 30px;
            font-size: 0.9rem;
            color: var(--text-dark);
            font-weight: 600;
            transition: var(--transition);
        }

        .model-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-glow);
            transform: scale(1.05);
        }

        /* Workflow Steps */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            position: relative;
            margin-top: 40px;
        }

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

        .workflow-step:hover {
            transform: translateY(-5px);
            border-color: var(--secondary);
            box-shadow: 0 10px 25px rgba(0, 223, 216, 0.1);
        }

        .step-num {
            font-size: 3rem;
            font-weight: 900;
            color: rgba(121, 40, 202, 0.1);
            position: absolute;
            top: 10px;
            right: 20px;
            line-height: 1;
        }

        .workflow-step h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }

        .workflow-step p {
            font-size: 0.9rem;
            color: var(--text-muted);
            position: relative;
            z-index: 2;
        }

        /* Technical Standards */
        .standards-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .standards-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .standard-item {
            background: var(--bg-card);
            padding: 20px 24px;
            border-radius: 12px;
            border-left: 5px solid var(--primary);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .standard-item h4 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }

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

        /* Solutions Grid */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .solution-card {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.05);
            border-color: var(--accent);
        }

        .solution-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

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

        /* Global Network map mock */
        .network-wrap {
            background: var(--bg-card);
            border-radius: 20px;
            padding: 40px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .network-node {
            padding: 20px;
            background: #f8fafc;
            border-radius: 12px;
            border: 1px dashed var(--border-color);
        }

        .network-node h4 {
            font-size: 1.1rem;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .network-node p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* Cases Center (With Images) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

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

        .case-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-card:hover .case-img-container img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 24px;
        }

        .case-badge {
            display: inline-block;
            padding: 4px 10px;
            background: var(--primary-glow);
            color: var(--primary);
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .case-info h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
        }

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

        /* Evaluation Block */
        .eval-wrap {
            background: var(--bg-card);
            border-radius: 24px;
            border: 1px solid var(--border-color);
            padding: 50px 40px;
            box-shadow: 0 15px 35px rgba(121, 40, 202, 0.05);
        }

        .eval-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 30px;
        }

        .eval-score-box {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .eval-num-large {
            font-size: 4.5rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
        }

        .eval-stars {
            color: #fbbf24;
            font-size: 1.5rem;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.95rem;
        }

        .compare-table th {
            background-color: #f8fafc;
            font-weight: 700;
        }

        .compare-table tr:hover {
            background-color: rgba(0, 223, 216, 0.02);
        }

        .text-highlight {
            color: var(--primary);
            font-weight: 700;
        }

        /* Token Price Reference */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .token-card {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 24px;
            border: 1px solid var(--border-color);
        }

        .token-card h3 {
            font-size: 1.2rem;
            margin-bottom: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .token-price-tag {
            font-size: 0.8rem;
            padding: 4px 10px;
            background: #e2e8f0;
            border-radius: 20px;
            color: var(--text-dark);
        }

        .token-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .token-item {
            display: flex;
            justify-content: space-between;
            font-size: 0.9rem;
        }

        .token-item span:last-child {
            font-weight: 600;
            color: #10b981;
        }

        .token-item.discount span:last-child {
            color: var(--accent);
        }

        /* Training & Certifications */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

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

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

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

        .training-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .cert-badge {
            display: inline-block;
            padding: 4px 8px;
            background: #f1f5f9;
            color: var(--text-muted);
            font-size: 0.8rem;
            border-radius: 4px;
            font-weight: 600;
        }

        /* Agent Info */
        .agent-box {
            background: var(--gradient-soft);
            border: 2px dashed var(--primary);
            border-radius: 24px;
            padding: 50px 40px;
            text-align: center;
        }

        .agent-box h3 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }

        .agent-benefits {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin: 30px 0;
            flex-wrap: wrap;
        }

        .benefit-item {
            background: var(--bg-card);
            padding: 15px 25px;
            border-radius: 30px;
            border: 1px solid var(--border-color);
            font-weight: 600;
            font-size: 0.95rem;
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-btn {
            width: 100%;
            padding: 20px 24px;
            text-align: left;
            background: none;
            border: none;
            outline: none;
            cursor: pointer;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: var(--transition);
            color: var(--primary);
            flex-shrink: 0;
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background-color: #fafbfc;
        }

        .faq-content p {
            padding: 20px 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 1px solid var(--border-color);
        }

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

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

        /* Self Troubleshooting & Term Glossary */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .help-card {
            background: var(--bg-card);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid var(--border-color);
        }

        .help-card h3 {
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .trouble-list, .glossary-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .trouble-item h4, .glossary-item h4 {
            font-size: 1rem;
            margin-bottom: 4px;
        }

        .trouble-item p, .glossary-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

        .review-card {
            background: var(--bg-card);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

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

        .review-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
        }

        .reviewer-info h4 {
            font-size: 1.1rem;
        }

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

        .review-stars {
            color: #fbbf24;
            font-size: 1rem;
        }

        .review-content {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* News & Knowledge base */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .news-card {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .news-card:hover {
            border-color: var(--primary);
            box-shadow: 0 10px 25px rgba(0,0,0,0.03);
        }

        .news-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-card h3 a {
            color: var(--text-dark);
            text-decoration: none;
            transition: var(--transition);
        }

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

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

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

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

        .contact-details {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .contact-details li {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .contact-details-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-glow);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .contact-qr-wrap {
            display: flex;
            gap: 20px;
            align-items: center;
            margin-top: 10px;
        }

        .contact-qr {
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 4px;
            background: #fff;
        }

        .contact-qr img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Submit Form */
        .form-card {
            background: var(--bg-card);
            border-radius: 24px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: 0 15px 35px rgba(0,0,0,0.03);
        }

        .form-title {
            font-size: 1.5rem;
            margin-bottom: 24px;
        }

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

        .form-group {
            margin-bottom: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

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

        .form-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-dark);
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            background: #f8fafc;
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px var(--primary-glow);
        }

        .form-textarea {
            resize: vertical;
            height: 120px;
        }

        /* Footer */
        .footer {
            background-color: #0b0f19;
            color: #94a3b8;
            padding: 80px 0 30px;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .footer-links-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 20px;
        }

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.85rem;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 10px;
        }

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            font-size: 0.8rem;
            transition: var(--transition);
        }

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

        /* Floating Sidebar Elements */
        .floating-sidebar {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 99;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #fff;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            position: relative;
        }

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

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .float-qr-pop {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            padding: 10px;
            border-radius: 8px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            border: 1px solid var(--border-color);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            transform: scale(0.9);
            transform-origin: right bottom;
            width: 140px;
        }

        .float-btn:hover .float-qr-pop {
            opacity: 1;
            visibility: visible;
            transform: scale(1);
        }

        .float-qr-pop img {
            width: 100%;
            height: auto;
            display: block;
        }

        .float-qr-pop p {
            color: var(--text-dark);
            font-size: 0.75rem;
            text-align: center;
            margin-top: 6px;
            font-weight: 600;
        }

        /* Animations */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .animate-fade-in {
            animation: fadeIn 0.8s ease forwards;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .about-wrap, .standards-wrap, .contact-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-h1 {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .nav-menu {
                position: absolute;
                top: 80px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 30px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                display: none;
            }

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

            .nav-actions {
                display: none;
            }

            .hero-h1 {
                font-size: 2.2rem;
            }

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

            .form-group.full-width {
                grid-column: span 1;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .help-grid {
                grid-template-columns: 1fr;
            }
        }