/* roulang page: index */
:root {
            --bg-clean: #F4F6F8;
            --bg-white: #FFFFFF;
            --bg-dark: #0F141C;
            --bg-dark-card: #181F2C;
            --primary: #00667A;
            --primary-hover: #004D5C;
            --secondary: #FF6B35;
            --accent-gold: #D4AF37;
            --text-main: #111827;
            --text-body: #374151;
            --text-muted: #6B7280;
            --border-light: #E2E8F0;
            --border-dark: rgba(255, 255, 255, 0.12);
            --radius: 4px;
            --shadow-subtle: 0 1px 3px rgba(0,0,0,0.05);
            --shadow-card: 0 4px 16px -2px rgba(15, 20, 28, 0.08);
            --shadow-hover: 0 10px 24px -4px rgba(0, 102, 122, 0.16);
            --font-mono: Consolas, "Roboto Mono", "Segoe UI", monospace;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
            background-color: var(--bg-clean);
            color: var(--text-body);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s, background-color 0.2s;
        }

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

        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 顶部状态条与导航 */
        .topline-bar {
            background-color: var(--bg-dark-card);
            color: #94A3B8;
            font-size: 0.8125rem;
            font-family: var(--font-mono);
            height: 38px;
            border-bottom: 1px solid var(--border-dark);
            display: flex;
            align-items: center;
        }
        .topline-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }
        .topline-item {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: #10B981;
            display: inline-block;
            box-shadow: 0 0 6px #10B981;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-subtle);
        }
        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-main);
            letter-spacing: -0.5px;
        }
        .logo-symbol {
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius);
            font-family: var(--font-mono);
            font-size: 1.1rem;
            font-weight: bold;
        }
        .main-menu {
            display: flex;
            gap: 24px;
            list-style: none;
            align-items: center;
        }
        .main-menu a {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 0;
            position: relative;
        }
        .main-menu a:hover {
            color: var(--primary);
        }
        .nav-btn {
            background-color: var(--secondary);
            color: #FFFFFF;
            padding: 9px 18px;
            font-size: 0.875rem;
            font-weight: 600;
            border-radius: var(--radius);
            display: inline-flex;
            align-items: center;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .nav-btn:hover {
            background-color: #E65A26;
            transform: translateY(-1px);
        }

        /* 移动端菜单按钮与抽屉 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 110px;
            left: 0;
            width: 100%;
            background: #FFFFFF;
            border-bottom: 2px solid var(--primary);
            padding: 24px 20px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            z-index: 99;
        }
        .mobile-drawer.open {
            display: block;
        }
        .mobile-drawer ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .mobile-drawer a {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            display: block;
        }

        /* 通用板块规范 */
        section {
            padding: 72px 0;
            position: relative;
        }
        .section-header {
            max-width: 840px;
            margin: 0 auto 48px auto;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--primary);
            background: rgba(0, 102, 122, 0.08);
            padding: 3px 10px;
            border-radius: 2px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2.125rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 板块背景交替 */
        .bg-white { background-color: var(--bg-white); }
        .bg-clean { background-color: var(--bg-clean); }
        .bg-dark {
            background-color: var(--bg-dark);
            color: #E2E8F0;
        }
        .bg-dark .section-title { color: #FFFFFF; }
        .bg-dark .section-desc { color: #94A3B8; }
        .bg-dark .section-tag {
            background: rgba(0, 102, 122, 0.35);
            color: #38BDF8;
        }

        /* 1. Hero：无大图首屏，图标矩阵 + 状态条 + 短标题 */
        #hero {
            padding: 60px 0 80px 0;
            background: linear-gradient(180deg, #FFFFFF 0%, #F4F6F8 100%);
            border-bottom: 1px solid var(--border-light);
        }
        .hero-status-strip {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.875rem;
            font-family: var(--font-mono);
            color: var(--text-body);
            margin-bottom: 24px;
            box-shadow: var(--shadow-subtle);
        }
        .hero-h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
            letter-spacing: -0.8px;
            margin-bottom: 20px;
        }
        .hero-lead {
            font-size: 1.125rem;
            color: var(--text-body);
            line-height: 1.75;
            max-width: 900px;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            align-items: center;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid transparent;
            transition: all 0.2s;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 102, 122, 0.25);
        }
        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--text-main);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: all 0.2s;
        }
        .btn-secondary:hover {
            background-color: #F8FAFC;
            border-color: #CBD5E1;
        }
        .hero-matrix {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .matrix-cell {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            padding: 20px;
            border-radius: var(--radius);
            display: flex;
            align-items: flex-start;
            gap: 16px;
            box-shadow: var(--shadow-subtle);
            border-top: 3px solid transparent;
            transition: border-color 0.2s, transform 0.2s;
        }
        .matrix-cell:hover {
            border-top-color: var(--primary);
            transform: translateY(-2px);
        }
        .matrix-icon {
            width: 40px;
            height: 40px;
            background: rgba(0, 102, 122, 0.08);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
            font-family: var(--font-mono);
        }
        .matrix-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .matrix-desc {
            font-size: 0.8125rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 2. 入口矩阵 (#portals) */
        .portal-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .portal-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px 24px;
            position: relative;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
        }
        .portal-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }
        .portal-badge {
            font-family: var(--font-mono);
            font-size: 0.75rem;
            color: var(--secondary);
            background: #FFF1EB;
            padding: 3px 8px;
            border-radius: 2px;
            display: inline-block;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .portal-h3 {
            font-size: 1.25rem;
            color: var(--text-main);
            margin-bottom: 12px;
            font-weight: 700;
        }
        .portal-p {
            font-size: 0.9375rem;
            color: var(--text-body);
            margin-bottom: 20px;
            line-height: 1.6;
        }
        .portal-link {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* 3. 最新动态 (#news) */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-item {
            background: var(--bg-clean);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .news-meta {
            padding: 16px 20px 8px 20px;
            display: flex;
            justify-content: space-between;
            font-size: 0.8125rem;
            font-family: var(--font-mono);
            color: var(--text-muted);
        }
        .news-content {
            padding: 0 20px 24px 20px;
            flex-grow: 1;
        }
        .news-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-desc {
            font-size: 0.875rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* 4. 精选分类 (#products) */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .product-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .product-image {
            height: 220px;
            background: #E2E8F0;
            position: relative;
            overflow: hidden;
        }
        .product-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .product-card:hover .product-image img {
            transform: scale(1.05);
        }
        .product-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .product-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .product-desc {
            font-size: 0.875rem;
            color: var(--text-body);
            margin-bottom: 18px;
            line-height: 1.6;
        }
        .spec-list {
            margin-top: auto;
            border-top: 1px dashed var(--border-light);
            padding-top: 16px;
            list-style: none;
            font-size: 0.8125rem;
            font-family: var(--font-mono);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .spec-row {
            display: flex;
            justify-content: space-between;
        }
        .spec-label { color: var(--text-muted); }
        .spec-val { color: var(--primary); font-weight: 600; }

        /* 5. 产研积淀与认证 (#about) */
        .split-about {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .about-visual {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }
        .about-badge-float {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(15, 20, 28, 0.9);
            color: #FFFFFF;
            padding: 12px 20px;
            border-radius: var(--radius);
            font-family: var(--font-mono);
            font-size: 0.875rem;
            border-left: 3px solid var(--accent-gold);
        }
        .about-h3 {
            font-size: 1.625rem;
            color: var(--text-main);
            font-weight: 700;
            margin-bottom: 16px;
        }
        .about-p {
            font-size: 1rem;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 24px;
        }
        .spec-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .chip {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            padding: 8px 14px;
            border-radius: var(--radius);
            font-size: 0.875rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .chip-icon {
            color: var(--primary);
            font-weight: 700;
        }

        /* 6. 核心优势矩阵 (#advantages) */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .adv-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-subtle);
            border-left: 4px solid var(--primary);
            transition: transform 0.2s;
        }
        .adv-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .adv-h4 {
            font-size: 1.125rem;
            color: var(--text-main);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .adv-text {
            font-size: 0.875rem;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .adv-tag {
            font-family: var(--font-mono);
            font-size: 0.75rem;
            color: var(--secondary);
            font-weight: 600;
        }

        /* 7. 测试工程流转 (#workflow) */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .flow-step {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 24px;
            position: relative;
        }
        .step-num {
            font-family: var(--font-mono);
            font-size: 1.75rem;
            font-weight: 800;
            color: rgba(0, 102, 122, 0.2);
            line-height: 1;
            margin-bottom: 12px;
        }
        .step-h4 {
            font-size: 1.05rem;
            color: var(--text-main);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-desc {
            font-size: 0.875rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* 8. 自研板卡与核心技术 (#technology - 深色区) */
        .tech-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .tech-box {
            background: var(--bg-dark-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            padding: 28px;
            margin-bottom: 20px;
        }
        .tech-h4 {
            font-size: 1.125rem;
            color: #FFFFFF;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .tech-p {
            font-size: 0.875rem;
            color: #94A3B8;
            line-height: 1.6;
        }

        /* 9. 客户量产验证案例 (#cases) */
        .case-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .case-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .case-header {
            border-bottom: 1px solid var(--border-light);
            padding-bottom: 16px;
            margin-bottom: 20px;
        }
        .case-client {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
        }
        .case-meta {
            font-size: 0.8125rem;
            font-family: var(--font-mono);
            color: var(--text-muted);
        }
        .case-row {
            margin-bottom: 14px;
        }
        .case-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .case-text {
            font-size: 0.9375rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* 10. 量化效能指标 (#metrics) */
        .metric-band {
            background: var(--bg-dark);
            padding: 50px 0;
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
        }
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-val {
            font-family: var(--font-mono);
            font-size: 2.5rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 6px;
        }
        .metric-val span {
            color: var(--secondary);
            font-size: 1.5rem;
        }
        .metric-title {
            font-size: 0.875rem;
            color: #94A3B8;
            letter-spacing: 0.5px;
        }

        /* 11. 标杆客户声音 (#testimonials) */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .quote-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px;
            position: relative;
        }
        .quote-p {
            font-size: 1rem;
            color: var(--text-body);
            font-style: italic;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .quote-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .quote-role {
            font-size: 0.875rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        /* 12. 快速技术解答 (#faq) */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            transition: border-color 0.2s;
        }
        .faq-item.active {
            border-left: 4px solid var(--primary);
        }
        .faq-header {
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            background: #FFFFFF;
        }
        .faq-header:hover {
            color: var(--primary);
        }
        .faq-icon {
            font-family: var(--font-mono);
            font-size: 1.25rem;
            color: var(--primary);
            transition: transform 0.25s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            background: #F8FAFC;
            font-size: 0.9375rem;
            color: var(--text-body);
            line-height: 1.75;
            padding: 0 24px;
        }
        .faq-item.active .faq-body {
            max-height: 280px;
            padding: 16px 24px 24px 24px;
            border-top: 1px solid var(--border-light);
        }

        /* 底部工程咨询区 (#contact) */
        .contact-box {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: 5fr 7fr;
            overflow: hidden;
        }
        .contact-info {
            background: var(--bg-dark-card);
            color: #E2E8F0;
            padding: 48px 40px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .contact-h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .contact-desc {
            font-size: 0.9375rem;
            color: #94A3B8;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .contact-meta-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
            font-size: 0.875rem;
        }
        .contact-meta-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        .meta-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--secondary);
            margin-top: 6px;
            flex-shrink: 0;
        }
        .contact-form-area {
            padding: 48px 40px;
            background: #FFFFFF;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group.full {
            grid-column: span 2;
        }
        .form-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-main);
        }
        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 11px 14px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            font-size: 0.9375rem;
            color: var(--text-main);
            background: #F8FAFC;
            outline: none;
            transition: border-color 0.2s, background-color 0.2s;
        }
        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--primary);
            background: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(0, 102, 122, 0.1);
        }
        .form-textarea {
            resize: vertical;
            min-height: 96px;
        }
        .form-submit-btn {
            background-color: var(--secondary);
            color: #FFFFFF;
            border: none;
            padding: 13px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius);
            cursor: pointer;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
        }
        .form-submit-btn:hover {
            background-color: #E65A26;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
        }
        .form-toast {
            display: none;
            margin-top: 16px;
            padding: 12px 16px;
            background: #ECFDF5;
            border: 1px solid #A7F3D0;
            color: #065F46;
            font-size: 0.875rem;
            border-radius: var(--radius);
            text-align: center;
        }

        /* 页脚 */
        .site-footer {
            background: #0B0E14;
            color: #94A3B8;
            padding: 64px 0 32px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.875rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-desc {
            line-height: 1.7;
            margin-bottom: 20px;
            font-size: 0.875rem;
        }
        .footer-h5 {
            color: #FFFFFF;
            font-size: 0.9375rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8125rem;
            font-family: var(--font-mono);
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-matrix { grid-template-columns: repeat(2, 1fr); }
            .portal-grid, .news-grid, .product-grid, .advantage-grid { grid-template-columns: repeat(2, 1fr); }
            .flow-grid { grid-template-columns: repeat(2, 1fr); }
            .metric-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
            .split-about, .tech-layout, .case-split, .testimonial-grid, .contact-box { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .main-menu, .nav-btn, .topline-bar { display: none; }
            .mobile-toggle { display: block; }
            .hero-h1 { font-size: 2.125rem; }
            .section-title { font-size: 1.75rem; }
            .hero-matrix, .portal-grid, .news-grid, .product-grid, .advantage-grid, .flow-grid, .metric-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .form-grid { grid-template-columns: 1fr; }
            .form-group.full { grid-column: span 1; }
            .contact-info, .contact-form-area { padding: 32px 20px; }
            section { padding: 52px 0; }
        }