:root {
            --primary-color: #E60012; /* 艳红 */
            --primary-hover: #C5000F;
            --accent-color: #FF4D4D;
            --dark-color: #1A1A1A;
            --light-bg: #F9F9F9;
            --text-dark: #333333;
            --text-muted: #666666;
            --border-color: #E5E5E5;
            --container-width: 1200px;
        }

        * {
            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);
            line-height: 1.6;
        }

        body {
            background-color: #FFFFFF;
            overflow-x: hidden;
        }

        /* 统一容器 */
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* 顶部导航 */
        header {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

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

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

        .nav-menu a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 14px;
            transition: color 0.3s;
        }

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

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

        .nav-btn {
            background-color: var(--primary-color);
            color: #FFFFFF;
            padding: 8px 16px;
            border-radius: 4px;
            text-decoration: none;
            font-size: 14px;
            font-weight: bold;
            transition: background-color 0.3s;
        }

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

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

        /* 移动端侧边栏 */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            padding: 20px;
            z-index: 999;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        }

        .mobile-nav ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .mobile-nav a {
            text-decoration: none;
            color: var(--text-dark);
            font-size: 16px;
            font-weight: 500;
            display: block;
        }

        /* Hero首屏 - 严禁包含图片资源 */
        .hero-section {
            background: linear-gradient(135deg, #1A1A1A 0%, #3D0005 50%, #1A1A1A 100%);
            color: #FFFFFF;
            padding: 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 50% 50%, rgba(230, 0, 18, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-badge {
            display: inline-block;
            background-color: rgba(230, 0, 18, 0.2);
            border: 1px solid var(--primary-color);
            color: var(--accent-color);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        /* H1 20字以内 */
        .hero-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: #FFFFFF;
        }

        .hero-desc {
            font-size: 18px;
            color: #CCCCCC;
            max-width: 800px;
            margin: 0 auto 35px;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: #FFFFFF;
            padding: 14px 28px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: bold;
            font-size: 16px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(230, 0, 18, 0.4);
            border: 1px solid var(--primary-color);
        }

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

        .btn-secondary {
            background-color: transparent;
            color: #FFFFFF;
            padding: 14px 28px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: bold;
            font-size: 16px;
            transition: all 0.3s ease;
            border: 1px solid rgba(255, 255, 255, 0.4);
        }

        .btn-secondary:hover {
            border-color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* 数据指标卡片 */
        .stats-section {
            background-color: #FFFFFF;
            padding: 50px 0;
            border-bottom: 1px solid var(--border-color);
            position: relative;
            z-index: 10;
            margin-top: -40px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background-color: #FFFFFF;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }

        .stat-card {
            text-align: center;
            border-right: 1px solid var(--border-color);
        }

        .stat-card:last-child {
            border-right: none;
        }

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 5px;
        }

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

        /* 通用区块样式 */
        section {
            padding: 80px 0;
        }

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

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

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--dark-color);
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary-color);
            border-radius: 2px;
        }

        .section-header p {
            color: var(--text-muted);
            margin-top: 15px;
            font-size: 16px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 关于我们与平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

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

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

        .about-feature-item {
            background-color: #FFFFFF;
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary-color);
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

        .about-feature-item h4 {
            margin-bottom: 8px;
            font-size: 16px;
            color: var(--dark-color);
        }

        .about-feature-item p {
            font-size: 13px;
            margin-bottom: 0;
        }

        .about-media {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .about-media img {
            border-radius: 10px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            width: 100%;
            object-fit: cover;
        }

        /* 全平台AIGC服务 / 模型聚合 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 30px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(230,0,18,0.08);
            border-color: rgba(230,0,18,0.3);
        }

        .service-icon {
            font-size: 32px;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--dark-color);
        }

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

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .model-tag {
            font-size: 11px;
            background-color: var(--light-bg);
            color: var(--text-muted);
            padding: 2px 8px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
        }

        /* 一站式AIGC制作场景 */
        .production-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .prod-card {
            background-color: #FFFFFF;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
            border-bottom: 4px solid var(--border-color);
            transition: all 0.3s;
        }

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

        .prod-info {
            padding: 20px;
        }

        .prod-info h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        /* 流程步骤 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-card {
            background-color: #FFFFFF;
            padding: 30px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            position: relative;
            text-align: center;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background-color: var(--primary-color);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin: 0 auto 20px;
        }

        .step-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        /* 对比评测 - 表格结构 */
        .comparison-table-wrapper {
            overflow-x: auto;
            background-color: #FFFFFF;
            border-radius: 8px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.05);
            border: 1px solid var(--border-color);
        }

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

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

        .comparison-table th {
            background-color: #FDF2F2;
            color: var(--dark-color);
            font-weight: 700;
        }

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

        .comparison-table .highlight {
            background-color: rgba(230,0,18,0.02);
            font-weight: 600;
        }

        .badge-star {
            color: #FFB300;
            font-weight: bold;
        }

        .score-highlight {
            font-size: 24px;
            color: var(--primary-color);
            font-weight: 800;
        }

        /* Token 比价 */
        .token-price-calculator {
            background-color: #FFFFFF;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            border: 1px solid var(--border-color);
            padding: 40px;
        }

        .calc-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .calc-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

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

        .form-group label {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark-color);
        }

        .form-group select, .form-group input {
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
        }

        .calc-result {
            background-color: #FFF5F5;
            border: 1px dashed var(--primary-color);
            border-radius: 8px;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .result-title {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .result-price {
            font-size: 36px;
            color: var(--primary-color);
            font-weight: 800;
            margin-bottom: 15px;
        }

        /* 案例展示 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: #FFFFFF;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
        }

        .case-img-container {
            height: 200px;
            overflow: hidden;
            background-color: #EEE;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-info h4 {
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        /* 职业培训 & 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            text-align: center;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--primary-color);
            box-shadow: 0 5px 15px rgba(230,0,18,0.05);
            transform: translateY(-2px);
        }

        .training-icon {
            font-size: 28px;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        .training-card h4 {
            font-size: 15px;
            margin-bottom: 10px;
        }

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

        /* 行业资讯 / 知识库 / 文章列表 */
        .article-section {
            background-color: #FFFFFF;
        }

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

        .article-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 24px;
            transition: all 0.3s;
        }

        .article-card:hover {
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transform: translateY(-2px);
        }

        .article-tag {
            background-color: #FFF0F0;
            color: var(--primary-color);
            padding: 2px 8px;
            font-size: 12px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 12px;
        }

        .article-card h3 {
            font-size: 16px;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-card h3 a {
            text-decoration: none;
            color: var(--dark-color);
            transition: color 0.3s;
        }

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

        .article-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 15px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        /* 常见用户问题 FAQ 折叠面板 */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .faq-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 10px;
            overflow: hidden;
        }

        .faq-question {
            padding: 16px 20px;
            background-color: #FFFFFF;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 15px;
            user-select: none;
            transition: background-color 0.3s;
        }

        .faq-question:hover {
            background-color: var(--light-bg);
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 0 solid var(--border-color);
            background-color: #FAFADA;
        }

        .faq-item.active .faq-answer {
            padding: 16px 20px;
            max-height: 200px;
            border-top: 1px solid var(--border-color);
        }

        .faq-icon::after {
            content: '+';
            font-size: 18px;
            font-weight: bold;
        }

        .faq-item.active .faq-icon::after {
            content: '-';
        }

        /* 客户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 24px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

        .user-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--primary-color);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
        }

        .user-meta h4 {
            font-size: 14px;
            color: var(--dark-color);
        }

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

        /* 智能需求匹配与联系我们表单 */
        .contact-section-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }

        .contact-info-panel {
            background-color: var(--dark-color);
            color: #FFFFFF;
            padding: 40px;
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-info-panel h3 {
            font-size: 24px;
            margin-bottom: 20px;
            color: #FFFFFF;
        }

        .contact-details {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin: 30px 0;
        }

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

        .contact-item-icon {
            color: var(--accent-color);
            font-weight: bold;
        }

        .contact-item-text h4 {
            font-size: 14px;
            color: #AAAAAA;
        }

        .contact-item-text p {
            font-size: 16px;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            align-items: center;
            background: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: 8px;
        }

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

        .qr-item img {
            width: 90px;
            height: 90px;
            border-radius: 4px;
            margin-bottom: 8px;
            background-color: #FFF;
            padding: 4px;
        }

        .qr-item span {
            display: block;
            font-size: 12px;
            color: #CCC;
        }

        .contact-form-panel {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        }

        .contact-form-panel h3 {
            font-size: 24px;
            margin-bottom: 25px;
            color: var(--dark-color);
        }

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

        .submit-btn {
            background-color: var(--primary-color);
            color: #FFFFFF;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s;
            width: 100%;
        }

        .submit-btn:hover {
            background-color: var(--primary-hover);
        }

        /* 标签云与辅助版块 */
        .tag-cloud-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .cloud-tag {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-dark);
            text-decoration: none;
            transition: all 0.3s;
        }

        .cloud-tag:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
            background-color: #FFF0F0;
        }

        /* 页脚区域 */
        footer {
            background-color: #1A1A1A;
            color: #FFFFFF;
            padding: 60px 0 30px;
            border-top: 4px solid var(--primary-color);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 16px;
            margin-bottom: 20px;
            color: #FFFFFF;
            position: relative;
            padding-bottom: 8px;
        }

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

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

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

        .footer-links a {
            color: #CCCCCC;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

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

        .footer-about p {
            font-size: 14px;
            color: #CCCCCC;
            margin-bottom: 15px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-bottom p {
            font-size: 12px;
            color: #888888;
        }

        .footer-bottom-links {
            display: flex;
            gap: 15px;
            font-size: 12px;
        }

        .footer-bottom-links a {
            color: #888888;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        /* 浮动客服 */
        .floating-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary-color);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.3);
            cursor: pointer;
            text-decoration: none;
            font-size: 18px;
            transition: all 0.3s;
            position: relative;
        }

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

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            display: none;
            flex-direction: column;
            align-items: center;
            width: 140px;
        }

        .qr-popover img {
            width: 110px;
            height: 110px;
            margin-bottom: 8px;
        }

        .qr-popover span {
            color: var(--text-dark);
            font-size: 11px;
            text-align: center;
            font-weight: bold;
        }

        .float-btn-qr:hover .qr-popover {
            display: flex;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-card {
                border-right: none;
                border-bottom: 1px solid var(--border-color);
                padding-bottom: 15px;
            }
            .stat-card:nth-child(n+3) {
                border-bottom: none;
                padding-bottom: 0;
                padding-top: 15px;
            }
            .about-grid, .contact-section-grid, .calc-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .production-grid, .cases-grid, .reviews-grid, .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu, .nav-btn-group {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero-title {
                font-size: 28px;
            }
            .services-grid, .production-grid, .cases-grid, .reviews-grid, .process-steps, .faq-grid, .article-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }