/* roulang page: index */
/* 1. 设计变量与全局基底 */
        :root {
            --primary: #0F52BA;
            --primary-dark: #0a3d8f;
            --primary-light: #e8f0fe;
            --accent: #00A86B;
            --accent-hover: #008f5a;
            --highlight: #FF6B35;
            --highlight-hover: #e55a26;
            --dark-surface: #0B192C;
            --dark-surface-card: #14273E;
            --bg-light: #F8FAFC;
            --bg-white: #FFFFFF;
            --text-main: #1E293B;
            --text-secondary: #475569;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
            --container-max: 1240px;
            --radius-md: 12px;
            --radius-sm: 6px;
            --shadow-subtle: 0 4px 20px -2px rgba(15, 82, 186, 0.06);
            --shadow-hover: 0 14px 28px -4px rgba(15, 82, 186, 0.14);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-tap-highlight-color: transparent;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.75;
            overflow-x: hidden;
        }

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

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

        button, input, select, textarea {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-header {
            text-align: center;
            max-width: 820px;
            margin: 0 auto 52px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: 1px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(15, 82, 186, 0.3);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(15, 82, 186, 0.4);
            transform: translateY(-2px);
        }

        .btn-highlight {
            background-color: var(--highlight);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
        }
        .btn-highlight:hover {
            background-color: var(--highlight-hover);
            transform: translateY(-2px);
        }

        .btn-outline {
            border-color: var(--border-color);
            background: #ffffff;
            color: var(--text-main);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        /* 2. 顶部双行导航 (Header) */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
        }

        .top-bar {
            background-color: #F1F5F9;
            border-bottom: 1px solid var(--border-color);
            font-size: 12px;
            color: var(--text-muted);
            padding: 6px 0;
        }
        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar-info span {
            margin-right: 20px;
        }

        .main-nav-bar {
            padding: 14px 0;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 900;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.5px;
        }
        .brand-logo svg {
            width: 28px;
            height: 28px;
            fill: var(--primary);
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 28px;
            align-items: center;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            position: relative;
            padding: 6px 0;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }

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

        /* 3. 板块 1: 首屏 Hero 架构区 (#hero) */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #0A192F 0%, #0F52BA 100%);
            color: #ffffff;
            padding: 80px 0 100px;
            overflow: hidden;
        }
        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/8f35fabf766f74c5.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 42px;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 span {
            color: #38BDF8;
        }
        .hero-desc {
            font-size: 16px;
            color: #E2E8F0;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }
        .hero-badges {
            display: flex;
            gap: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 24px;
        }
        .hero-badge-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: #CBD5E1;
        }
        .hero-badge-item svg {
            width: 18px;
            height: 18px;
            fill: var(--accent);
        }

        .hero-showcase-panel {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }
        .showcase-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            padding-bottom: 12px;
            margin-bottom: 20px;
        }
        .showcase-status {
            font-size: 12px;
            color: #4ADE80;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #4ADE80;
            box-shadow: 0 0 8px #4ADE80;
        }
        .showcase-preview-img {
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 16px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .showcase-metrics {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            text-align: center;
        }
        .metric-box {
            background: rgba(0, 0, 0, 0.25);
            padding: 12px 8px;
            border-radius: var(--radius-sm);
        }
        .metric-box .val {
            font-size: 20px;
            font-weight: 800;
            color: #38BDF8;
        }
        .metric-box .label {
            font-size: 12px;
            color: #94A3B8;
        }

        /* 4. 板块 2: 品牌与底座架构区 (#about) */
        .section-base {
            padding: 90px 0;
        }
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .about-visual {
            position: relative;
        }
        .about-visual img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-subtle);
        }
        .about-float-card {
            position: absolute;
            bottom: -24px;
            right: -20px;
            background: #ffffff;
            padding: 18px 24px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-hover);
            border-left: 4px solid var(--accent);
            max-width: 260px;
        }
        .about-float-card .num {
            font-size: 26px;
            font-weight: 800;
            color: var(--accent);
        }
        .about-float-card .text {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .about-text h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.4;
        }
        .about-spec-list {
            margin-top: 28px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .spec-item {
            background: #ffffff;
            padding: 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
        }
        .spec-item strong {
            display: block;
            color: var(--primary);
            font-size: 16px;
            margin-bottom: 4px;
        }
        .spec-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 5. 板块 3: 核心研发卖点矩阵 (#advantages) */
        .grid-3x2 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .adv-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 32px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-subtle);
            transition: var(--transition);
        }
        .adv-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 82, 186, 0.3);
        }
        .adv-icon {
            width: 54px;
            height: 54px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
        }
        .adv-card h4 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .adv-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* 6. 板块 4: 产品矩阵展示区 (#products) */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .product-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-subtle);
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .product-img-box {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .product-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .product-card:hover .product-img-box img {
            transform: scale(1.05);
        }
        .product-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 82, 186, 0.9);
            color: #ffffff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 4px;
        }
        .product-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .product-body h4 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .product-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 18px;
            line-height: 1.6;
        }
        .product-features {
            list-style: none;
            margin-bottom: 24px;
            flex-grow: 1;
        }
        .product-features li {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .product-features li::before {
            content: "✓";
            color: var(--accent);
            font-weight: bold;
        }
        .product-footer {
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .perf-badge {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
        }

        /* 7. 板块 5: 深度沉浸式底层技术架构 (#technology) */
        .tech-dark-section {
            background-color: var(--dark-surface);
            color: #F8FAFC;
            padding: 90px 0;
            position: relative;
        }
        .tech-dark-section .section-title {
            color: #ffffff;
        }
        .tech-dark-section .section-desc {
            color: #94A3B8;
        }
        .tech-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .tech-nodes {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .node-card {
            background: var(--dark-surface-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }
        .node-num {
            font-size: 20px;
            font-weight: 800;
            color: var(--accent);
            background: rgba(0, 168, 107, 0.15);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .node-info h5 {
            font-size: 17px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 6px;
        }
        .node-info p {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.6;
        }

        /* 8. 板块 6: 落地案例与商业应用场景 (#cases) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .case-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-subtle);
        }
        .case-card-img {
            height: 180px;
            position: relative;
        }
        .case-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-card-body {
            padding: 24px;
        }
        .case-client-tag {
            font-size: 12px;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .case-card-body h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .case-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .case-result-badge {
            display: inline-block;
            background: #ECFDF5;
            color: var(--accent);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
        }

        /* 9. 板块 7: 平台效能关键指标 (#metrics) */
        .metrics-strip {
            background: #ffffff;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 50px 0;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-item .val {
            font-size: 38px;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 6px;
            line-height: 1;
        }
        .metric-item .title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .metric-item .sub {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 10. 板块 8: 客户评价与同行信任背书 (#testimonials) */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .testimonial-card {
            background: #ffffff;
            padding: 30px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-subtle);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .stars {
            color: #FBBF24;
            font-size: 16px;
            margin-bottom: 16px;
            letter-spacing: 2px;
        }
        .t-quote {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .t-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }
        .t-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
        }
        .t-info strong {
            display: block;
            font-size: 14px;
            color: var(--text-main);
        }
        .t-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 11. 板块 9: 体育数字化前沿技术资讯 (#news) */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .news-card {
            background: #ffffff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            padding: 22px;
            transition: var(--transition);
        }
        .news-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-subtle);
        }
        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-card h5 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.5;
            color: var(--text-main);
        }
        .news-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* 12. 板块 10: 常见技术与采购解答 (#faq) */
        .faq-wrapper {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            overflow: hidden;
        }
        .faq-item summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 20px;
            color: var(--primary);
            font-weight: 400;
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            content: '−';
        }
        .faq-content {
            padding: 0 24px 22px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-top: 1px solid #F1F5F9;
            padding-top: 16px;
        }

        /* 13. 板块 11: 售后保障与服务SLA条 (#guarantee) */
        .guarantee-section {
            background: #ffffff;
            padding: 60px 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .guarantee-box {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .guarantee-icon {
            width: 48px;
            height: 48px;
            background: #ECFDF5;
            color: var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }
        .guarantee-text h5 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .guarantee-text p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 14. 板块 12: 底部强转化行动区 (#cta) */
        .cta-section {
            background: linear-gradient(135deg, #0F52BA 0%, #0A192F 100%);
            padding: 90px 0;
            color: #ffffff;
        }
        .cta-box {
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
        }
        .cta-box h3 {
            font-size: 34px;
            font-weight: 900;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-box p {
            font-size: 16px;
            color: #CBD5E1;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .cta-form {
            background: #ffffff;
            padding: 36px;
            border-radius: var(--radius-md);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
            text-align: left;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .form-group input, .form-group select {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-main);
            background: #F8FAFC;
        }
        .form-group input:focus, .form-group select:focus {
            border-color: var(--primary);
            background: #ffffff;
        }
        .form-submit-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 10px;
            gap: 16px;
        }
        .form-policy {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 15. 页脚与底部固定栏 */
        .site-footer {
            background: #0B192C;
            color: #94A3B8;
            padding: 80px 0 30px;
            font-size: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 60px;
        }
        .footer-brand h4 {
            font-size: 22px;
            font-weight: 900;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a:hover {
            color: #ffffff;
            padding-left: 4px;
        }
        .footer-contact li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 28px;
            text-align: center;
            font-size: 13px;
        }
        .footer-bottom a {
            color: #CBD5E1;
            margin: 0 8px;
        }

        /* 移动端吸底条 */
        .mobile-floating-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: #ffffff;
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.1);
            padding: 10px 16px;
            z-index: 999;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .grid-3x2, .products-grid, .cases-grid, .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tech-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 36px;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .top-bar {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-menu {
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 24px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);
                display: none;
                gap: 16px;
                border-top: 1px solid var(--border-color);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-actions {
                display: none;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .section-title {
                font-size: 26px;
            }
            .about-grid {
                grid-template-columns: 1fr;
            }
            .grid-3x2, .products-grid, .cases-grid, .testimonial-grid, .news-grid, .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .form-submit-row {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .mobile-floating-bar {
                display: grid;
            }
            body {
                padding-bottom: 60px;
            }
        }