/* CSS Reset & Variables */
        :root {
            --primary: #d32f2f;
            --primary-dark: #b71c1c;
            --primary-light: #ff6659;
            --accent: #ffeb3b;
            --dark: #212121;
            --gray: #666666;
            --light-gray: #f5f5f5;
            --white: #ffffff;
            --bg-gradient: linear-gradient(135deg, #b71c1c 0%, #d32f2f 100%);
            --transition: all 0.3s ease;
        }

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

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

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

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

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

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

        /* Utility Classes */
        .section-padding {
            padding: 80px 0;
        }

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

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

        .section-title {
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 15px;
            position: relative;
            font-weight: 700;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            margin: 15px auto 0;
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--gray);
            margin-bottom: 50px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Buttons */
        .btn {
            display: inline-block;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--white);
            box-shadow: 0 4px 15px rgba(211, 47, 47, 0.4);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(211, 47, 47, 0.6);
        }

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

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

        .btn-dark {
            background-color: var(--dark);
            color: var(--white);
        }

        .btn-dark:hover {
            background-color: #000;
            transform: translateY(-2px);
        }

        /* Header & Navigation */
        header {
            background-color: var(--white);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

        .logo-box {
            display: flex;
            align-items: center;
        }

        .ai-page-logo {
            max-height: 50px;
            width: auto;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 20px;
        }

        .nav-menu a {
            color: var(--dark);
            font-weight: 500;
            padding: 5px 10px;
            border-radius: 4px;
        }

        .nav-menu a:hover {
            color: var(--primary);
            background-color: rgba(211, 47, 47, 0.05);
        }

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

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--dark);
        }

        /* Hero Section (No Image Allowed in Hero) */
        .hero {
            background: var(--bg-gradient);
            color: var(--white);
            padding: 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
            pointer-events: none;
        }

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

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 25px;
            line-height: 1.25;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 10px rgba(0,0,0,0.2);
        }

        .hero-desc {
            font-size: 1.25rem;
            margin-bottom: 40px;
            opacity: 0.95;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .hero-badges {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .hero-badge {
            background-color: rgba(255, 255, 255, 0.15);
            padding: 8px 20px;
            border-radius: 20px;
            font-size: 0.9rem;
            backdrop-filter: blur(5px);
            border: 1px solid rgba(255,255,255,0.1);
        }

        /* Stats Section */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
            margin-bottom: 60px;
        }

        .stat-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            border-top: 4px solid var(--primary);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(211, 47, 47, 0.1);
        }

        .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1;
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 1rem;
            color: var(--gray);
            font-weight: 500;
        }

        .about-showcase {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: center;
            margin-top: 50px;
        }

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

        .about-text p {
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .about-img-box {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }

        /* Platform Grid (Model Showcase) */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            gap: 15px;
            margin-top: 30px;
        }

        .platform-card {
            background-color: var(--white);
            border: 1px solid #eee;
            border-radius: 8px;
            padding: 15px 10px;
            text-align: center;
            font-weight: 600;
            color: var(--dark);
            font-size: 0.95rem;
            box-shadow: 0 2px 5px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .platform-card:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: rgba(211, 47, 47, 0.02);
            transform: scale(1.05);
        }

        /* Process Steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            text-align: center;
            background-color: var(--white);
            border-radius: 12px;
            padding: 30px 20px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.04);
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 auto 20px;
            box-shadow: 0 4px 10px rgba(211,47,47,0.3);
        }

        .process-step h4 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .process-step p {
            font-size: 0.88rem;
            color: var(--gray);
        }

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

        .solution-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 40px 30px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: var(--transition);
            border-bottom: 4px solid transparent;
        }

        .solution-card:hover {
            transform: translateY(-5px);
            border-bottom-color: var(--primary);
            box-shadow: 0 15px 40px rgba(0,0,0,0.1);
        }

        .solution-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

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

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

        /* Network & Service Info */
        .network-section {
            background: linear-gradient(rgba(211, 47, 47, 0.95), rgba(183, 28, 28, 0.95));
            color: var(--white);
        }

        .network-section .section-title {
            color: var(--white);
        }

        .network-section .section-title::after {
            background-color: var(--accent);
        }

        .network-section .section-subtitle {
            color: rgba(255,255,255,0.8);
        }

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .network-item {
            background: rgba(255, 255, 255, 0.1);
            padding: 15px 20px;
            border-radius: 8px;
            border-left: 4px solid var(--accent);
        }

        .network-item h4 {
            font-size: 1.1rem;
            margin-bottom: 5px;
        }

        .network-item p {
            font-size: 0.85rem;
            opacity: 0.8;
        }

        /* Technical & Standard */
        .grid-2col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .tech-card, .standard-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.05);
        }

        .tech-list, .standard-list {
            list-style: none;
            margin-top: 20px;
        }

        .tech-list li, .standard-list li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 15px;
            font-size: 0.95rem;
        }

        .tech-list li::before, .standard-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        /* Cases Grid */
        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .case-card {
            background-color: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

        .case-img-box {
            position: relative;
            overflow: hidden;
            height: 250px;
        }

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

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

        .case-content {
            padding: 30px;
        }

        .case-tag {
            background-color: rgba(211, 47, 47, 0.1);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 15px;
        }

        .case-content h4 {
            font-size: 1.4rem;
            margin-bottom: 10px;
        }

        .case-content p {
            color: var(--gray);
            font-size: 0.9rem;
        }

        /* Comparison Board */
        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: 12px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.05);
            background-color: var(--white);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 20px 25px;
            border-bottom: 1px solid #eee;
        }

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

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

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

        .evaluation-widget {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            background: #fff5f5;
            padding: 25px;
            border-radius: 12px;
            border: 1px dashed var(--primary);
        }

        .evaluation-score {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
        }

        .evaluation-stars {
            color: #ffb300;
            font-size: 1.8rem;
        }

        /* Token Price Box */
        .token-price-wrapper {
            margin-top: 30px;
            overflow-x: auto;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

        .token-table {
            width: 100%;
            border-collapse: collapse;
            background-color: var(--white);
        }

        .token-table th, .token-table td {
            padding: 15px 20px;
            border-bottom: 1px solid #eee;
            text-align: center;
        }

        .token-table th {
            background-color: var(--primary);
            color: var(--white);
        }

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

        .training-card {
            background-color: var(--white);
            border-radius: 10px;
            padding: 25px 20px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.04);
            text-align: center;
            border-top: 4px solid var(--primary-light);
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-top-color: var(--primary);
            box-shadow: 0 10px 25px rgba(211,47,47,0.15);
        }

        .training-card h4 {
            font-size: 1.1rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .training-card p {
            font-size: 0.85rem;
            color: var(--gray);
        }

        /* Help Center / Troubleshooting */
        .help-center-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .help-box h3 {
            font-size: 1.5rem;
            margin-bottom: 25px;
            color: var(--dark);
        }

        .trouble-list, .百科list {
            list-style: none;
        }

        .trouble-item, .百科item {
            margin-bottom: 20px;
            background-color: var(--white);
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
            border-left: 3px solid var(--primary-light);
        }

        .trouble-item h5, .百科item h5 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .trouble-item p, .百科item p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* FAQ Accordion */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--white);
            margin-bottom: 15px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
            overflow: hidden;
            border: 1px solid #eee;
        }

        .faq-header {
            padding: 20px 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            transition: var(--transition);
        }

        .faq-header:hover {
            background-color: rgba(211, 47, 47, 0.02);
        }

        .faq-question {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--dark);
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: transform 0.3s ease;
        }

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

        .faq-content {
            padding: 20px 25px;
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
            border-top: 1px solid #eee;
        }

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

        .faq-item.active .faq-body {
            max-height: 300px; /* Adjust according to content */
        }

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

        .testimonial-card {
            background-color: var(--white);
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.04);
            position: relative;
        }

        .testimonial-quote {
            font-size: 0.95rem;
            color: var(--gray);
            margin-bottom: 25px;
            line-height: 1.7;
            position: relative;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 15px;
            border-top: 1px solid #f0f0f0;
            padding-top: 20px;
        }

        .author-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-weight: bold;
            font-size: 1.2rem;
        }

        .author-info h5 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 2px;
        }

        .author-info p {
            font-size: 0.8rem;
            color: var(--primary);
        }

        /* Contact & Form Section */
        .contact-section-inner {
            display: grid;
            grid-template-columns: 1.2fr 1.8fr;
            gap: 50px;
        }

        .contact-info {
            background: var(--bg-gradient);
            color: var(--white);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 15px 40px rgba(211, 47, 47, 0.25);
        }

        .contact-info h3 {
            font-size: 1.8rem;
            margin-bottom: 25px;
        }

        .contact-list {
            list-style: none;
            margin-bottom: 40px;
        }

        .contact-list li {
            margin-bottom: 20px;
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .qr-codes {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            background: rgba(255,255,255,0.1);
            padding: 20px;
            border-radius: 10px;
            text-align: center;
        }

        .qr-item img {
            width: 130px;
            height: 130px;
            margin: 0 auto 10px;
            border-radius: 8px;
            border: 4px solid var(--white);
        }

        .qr-item p {
            font-size: 0.85rem;
            font-weight: bold;
        }

        .form-card {
            background-color: var(--white);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.05);
            border: 1px solid #f0f0f0;
        }

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

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

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

        .form-group label {
            display: block;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--dark);
        }

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

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
        }

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

        /* Articles (Knowledge Base) */
        .articles-list-box {
            background-color: var(--white);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.03);
            margin-top: 30px;
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .article-link-item {
            background-color: var(--light-gray);
            padding: 20px;
            border-radius: 8px;
            display: block;
            border-left: 4px solid var(--primary);
            transition: var(--transition);
        }

        .article-link-item:hover {
            transform: translateX(5px);
            background-color: #fff0f0;
        }

        .article-link-item h4 {
            color: var(--dark);
            font-size: 1.05rem;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .article-link-item span {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 600;
        }

        /* Footer */
        footer {
            background-color: var(--dark);
            color: #b0bec5;
            padding: 60px 0 20px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
            border-bottom: 1px solid #37474f;
            padding-bottom: 40px;
        }

        .footer-logo img {
            max-height: 45px;
            margin-bottom: 20px;
        }

        .footer-desc {
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .footer-links h4 {
            color: var(--white);
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

        .footer-links ul {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #b0bec5;
        }

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

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

        .friend-links a {
            background-color: #37474f;
            color: #cfd8dc;
            padding: 5px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        /* Float Widget */
        .float-widget {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

        .float-btn .tooltip {
            position: absolute;
            right: 60px;
            background-color: var(--dark);
            color: var(--white);
            padding: 8px 15px;
            border-radius: 6px;
            font-size: 0.85rem;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            pointer-events: none;
        }

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

        .float-btn .qr-popup {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--white);
            border: 1px solid #ccc;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            color: var(--dark);
        }

        .float-btn .qr-popup img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .float-btn .qr-popup p {
            font-size: 0.75rem;
            font-weight: bold;
        }

        .float-btn.kefu:hover .qr-popup {
            display: block;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(3, 1fr);
            }
            .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 80px;
                left: 0;
                right: 0;
                background-color: var(--white);
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                border-top: 1px solid #eee;
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .about-showcase {
                grid-template-columns: 1fr;
            }
            .network-grid {
                grid-template-columns: 1fr;
            }
            .grid-2col {
                grid-template-columns: 1fr;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .help-center-grid {
                grid-template-columns: 1fr;
            }
            .contact-section-inner {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .articles-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .solutions-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: 1fr;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .evaluation-widget {
                flex-direction: column;
                text-align: center;
            }
        }