/* roulang page: index */
:root {
            --primary: #0F2042;
            --primary-dark: #071126;
            --brand-gradient: linear-gradient(135deg, #1A56DB 0%, #00B4D8 100%);
            --accent: #10B981;
            --bg-page: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-dark-section: #0B132B;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-light: rgba(15, 32, 66, 0.08);
            --border-dark: rgba(255, 255, 255, 0.12);
            --radius-card: 20px;
            --radius-btn: 12px;
            --radius-pill: 9999px;
            --shadow-card: 0 10px 30px -5px rgba(15, 32, 66, 0.05), 0 0 1px 1px rgba(15, 32, 66, 0.05);
            --shadow-hover: 0 20px 40px -10px rgba(26, 86, 219, 0.12);
            --max-w: 1200px;
            --header-h: 110px;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-page);
            color: var(--text-body);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

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

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

        /* 顶部导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
        }

        .header-topbar {
            background-color: var(--primary-dark);
            color: #94A3B8;
            font-size: 12px;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .topbar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .topbar-tags {
            display: flex;
            gap: 16px;
        }

        .topbar-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .topbar-tags span::before {
            content: "";
            width: 6px;
            height: 6px;
            background-color: var(--accent);
            border-radius: 50%;
        }

        .topbar-contact {
            display: flex;
            gap: 20px;
        }

        .header-main {
            padding: 16px 0;
        }

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

        .brand-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.5px;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--brand-gradient);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 800;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 28px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            padding: 6px 0;
        }

        .nav-link:hover, .nav-link.active {
            color: #1A56DB;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-gradient);
            transition: width 0.3s;
        }

        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }

        .nav-cta-btn {
            background: var(--brand-gradient);
            color: #FFFFFF !important;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.25);
            transition: transform 0.2s, box-shadow 0.2s;
            display: inline-block;
        }

        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 86, 219, 0.35);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            margin: 5px 0;
            transition: 0.3s;
        }

        /* 通用按钮与微标 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            min-height: 48px;
        }

        .btn-primary {
            background: var(--brand-gradient);
            color: #FFFFFF;
            box-shadow: 0 4px 15px rgba(26, 86, 219, 0.3);
            border: 1px solid transparent;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(26, 86, 219, 0.4);
        }

        .btn-outline {
            background: #FFFFFF;
            color: var(--primary);
            border: 1px solid var(--border-light);
            box-shadow: 0 2px 6px rgba(0,0,0,0.03);
        }

        .btn-outline:hover {
            background: #F1F5F9;
            transform: translateY(-2px);
            border-color: #CBD5E1;
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            background: rgba(26, 86, 219, 0.08);
            color: #1A56DB;
            border: 1px solid rgba(26, 86, 219, 0.18);
        }

        .badge-pill .pulse-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--accent);
            box-shadow: 0 0 0 rgba(16, 185, 129, 0.4);
            animation: pulse-green 2s infinite;
        }

        @keyframes pulse-green {
            0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
            70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
            100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
        }

        /* 统一卡片 */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        /* 板块通用头部 */
        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 54px;
        }

        .section-header h2 {
            font-size: 34px;
            color: var(--text-heading);
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-top: 14px;
            margin-bottom: 16px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .section {
            padding: 96px 0;
            position: relative;
        }

        .section-alt {
            background-color: #FFFFFF;
        }

        /* 板块 1: Hero */
        .hero-section {
            margin-top: var(--header-h);
            padding: 70px 0 90px;
            position: relative;
            background: radial-gradient(100% 70% at 80% 20%, rgba(0, 180, 216, 0.08) 0%, rgba(248, 250, 252, 0) 100%), var(--bg-page);
            overflow: hidden;
        }

        .hero-layout {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 48px;
            align-items: center;
        }

        .hero-text {
            z-index: 2;
        }

        .hero-text h1 {
            font-size: 44px;
            line-height: 1.25;
            color: var(--primary);
            font-weight: 800;
            margin: 20px 0 20px;
            letter-spacing: -1px;
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }

        .hero-kpis {
            display: flex;
            gap: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(15, 32, 66, 0.08);
        }

        .kpi-item .kpi-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }

        .kpi-item .kpi-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .hero-visual {
            position: relative;
        }

        .hero-image-wrap {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: 0 25px 50px -12px rgba(15, 32, 66, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.8);
            transform: perspective(1000px) rotateY(-3deg) rotateX(2deg);
        }

        .hero-image-wrap img {
            width: 100%;
            height: 480px;
            object-fit: cover;
        }

        .floating-badge {
            position: absolute;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            padding: 14px 20px;
            border-radius: 16px;
            box-shadow: 0 15px 35px rgba(15, 32, 66, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.8);
            z-index: 3;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .floating-badge.badge-top {
            top: -15px;
            right: 20px;
        }

        .floating-badge.badge-bottom {
            bottom: 25px;
            left: -20px;
        }

        .badge-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--brand-gradient);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .badge-text-val {
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
        }

        .badge-text-sub {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 板块 2: 卖点三连 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .feature-card {
            padding: 36px 30px;
            background: #FFFFFF;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
        }

        .feature-icon-box {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            background: var(--brand-gradient);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 24px;
            box-shadow: 0 8px 18px rgba(26, 86, 219, 0.2);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* 板块 3: 服务场景全栈流程 */
        .services-timeline-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .timeline-step-card {
            background: #FFFFFF;
            padding: 32px 24px;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            position: relative;
        }

        .step-num-pill {
            font-size: 12px;
            font-weight: 800;
            color: #1A56DB;
            background: #EFF6FF;
            padding: 4px 10px;
            border-radius: 6px;
            display: inline-block;
            margin-bottom: 16px;
        }

        .timeline-step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .timeline-step-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .toolchain-tag {
            font-size: 12px;
            color: var(--text-muted);
            background: #F8FAFC;
            padding: 4px 8px;
            border-radius: 4px;
            border: 1px solid #E2E8F0;
            display: inline-block;
        }

        /* 板块 4: 产品体系与硬核架构 */
        .product-split-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .split-image-container {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .split-image-container img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .split-text-content h3 {
            font-size: 28px;
            color: var(--text-heading);
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.35;
        }

        .split-text-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 24px;
        }

        .spec-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 28px;
        }

        .spec-list li {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .spec-list li::before {
            content: "✓";
            color: var(--accent);
            font-weight: 900;
        }

        /* 板块 5: 核心优势对比矩阵 */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .advantage-card {
            padding: 30px;
            border-radius: var(--radius-card);
            background: #FFFFFF;
            border: 1px solid var(--border-light);
        }

        .advantage-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .advantage-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.65;
        }

        /* 板块 6: 芯片产品与标准IP展区 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 32px;
            background: #FFFFFF;
        }

        .sol-meta {
            font-size: 12px;
            color: #1A56DB;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .solution-card h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
        }

        .solution-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .sol-footer-action {
            margin-top: auto;
            border-top: 1px solid #F1F5F9;
            padding-top: 18px;
        }

        .sol-link-btn {
            font-size: 14px;
            font-weight: 600;
            color: #1A56DB;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .sol-link-btn:hover {
            color: #0F2042;
        }

        /* 板块 7: 深色沉浸式案例 */
        .deep-case-section {
            background-color: var(--bg-dark-section);
            color: #FFFFFF;
        }

        .deep-case-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .deep-case-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-dark);
        }

        .deep-case-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .deep-case-text h3 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 18px;
            color: #FFFFFF;
        }

        .deep-case-text p {
            font-size: 15px;
            color: #94A3B8;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .case-metrics-bar {
            display: flex;
            gap: 32px;
            padding: 20px 0;
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
        }

        .case-metric-block h5 {
            font-size: 26px;
            font-weight: 800;
            color: #00B4D8;
        }

        .case-metric-block span {
            font-size: 12px;
            color: #94A3B8;
        }

        /* 板块 8: 研发数据统计带 */
        .metrics-strip-section {
            background: linear-gradient(135deg, #0F2042 0%, #172B54 100%);
            padding: 60px 0;
            color: #FFFFFF;
        }

        .metrics-strip-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .metric-cell h3 {
            font-size: 44px;
            font-weight: 800;
            color: #00B4D8;
            margin-bottom: 8px;
            letter-spacing: -1px;
        }

        .metric-cell p {
            font-size: 15px;
            color: #E2E8F0;
            font-weight: 500;
        }

        /* 板块 9: 商业信赖故事 */
        .stories-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .story-card {
            background: #FFFFFF;
            padding: 36px;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
        }

        .story-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent);
            background: rgba(16, 185, 129, 0.1);
            padding: 4px 10px;
            border-radius: 6px;
            display: inline-block;
            margin-bottom: 14px;
        }

        .story-card h4 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .story-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* 板块 10: 芯片行业资讯动态 */
        .insights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .insight-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }

        .insight-thumb {
            height: 200px;
            overflow: hidden;
        }

        .insight-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .insight-card:hover .insight-thumb img {
            transform: scale(1.05);
        }

        .insight-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .insight-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .insight-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .insight-body p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .insight-link {
            margin-top: auto;
            font-size: 14px;
            font-weight: 600;
            color: #1A56DB;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 板块 11: FAQ 手风琴 */
        .faq-accordion-wrap {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: 16px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all 0.25s ease;
        }

        .faq-item[open] {
            border-color: rgba(26, 86, 219, 0.3);
            box-shadow: var(--shadow-card);
        }

        .faq-item summary {
            padding: 22px 28px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            cursor: pointer;
            list-style: none;
            position: relative;
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "+";
            position: absolute;
            right: 28px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 22px;
            color: #1A56DB;
            font-weight: 400;
            transition: transform 0.2s;
        }

        .faq-item[open] summary::after {
            content: "−";
        }

        .faq-content {
            padding: 0 28px 24px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
            border-top: 1px dashed #F1F5F9;
            padding-top: 16px;
        }

        /* 板块 12: 交付质量保障条 */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .guarantee-box {
            background: #FFFFFF;
            padding: 28px 20px;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            text-align: center;
        }

        .guarantee-icon {
            font-size: 28px;
            margin-bottom: 12px;
            display: inline-block;
        }

        .guarantee-box h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .guarantee-box p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 转化表单区块 */
        .contact-cta-wrapper {
            background: linear-gradient(135deg, #0F2042 0%, #172B54 100%);
            border-radius: 28px;
            padding: 60px 48px;
            box-shadow: 0 20px 50px rgba(15, 32, 66, 0.25);
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .contact-cta-wrapper::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 180, 216, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .contact-layout {
            display: grid;
            grid-template-columns: 5fr 6fr;
            gap: 50px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .contact-text h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
            color: #FFFFFF;
        }

        .contact-text p {
            font-size: 15px;
            color: #94A3B8;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .contact-pills {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .contact-pill-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #E2E8F0;
        }

        .contact-pill-item::before {
            content: "✓";
            color: var(--accent);
            font-weight: 900;
        }

        .contact-form {
            background: #FFFFFF;
            padding: 36px;
            border-radius: 20px;
            color: var(--text-heading);
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
        }

        .form-row {
            margin-bottom: 18px;
        }

        .form-row label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .form-row input, .form-row select {
            width: 100%;
            height: 46px;
            padding: 0 14px;
            border-radius: 8px;
            border: 1px solid #CBD5E1;
            font-size: 14px;
            color: var(--text-body);
            background: #F8FAFC;
            outline: none;
            transition: border-color 0.2s;
        }

        .form-row input:focus, .form-row select:focus {
            border-color: #1A56DB;
            background: #FFFFFF;
        }

        .form-policy-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 12px;
            line-height: 1.5;
            text-align: center;
        }

        /* 全局页脚 */
        .site-footer {
            background-color: var(--primary-dark);
            color: #94A3B8;
            padding: 70px 0 30px;
            font-size: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 4fr 3fr 3fr 2fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand h4 {
            font-size: 18px;
            color: #FFFFFF;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-brand p {
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .footer-col h5 {
            font-size: 15px;
            color: #FFFFFF;
            font-weight: 600;
            margin-bottom: 18px;
        }

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

        .footer-links a {
            color: #94A3B8;
        }

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

        .footer-contact-info p {
            line-height: 1.8;
            margin-bottom: 8px;
        }

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
        }

        .footer-records {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        /* 移动端贴底浮动条 */
        .mobile-dock-cta {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 10px 16px;
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
            border-top: 1px solid var(--border-light);
            z-index: 999;
        }

        .mobile-dock-btns {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-image-wrap {
                transform: none;
            }
            .hero-image-wrap img {
                height: 380px;
            }
            .features-grid, .services-timeline-grid, .advantage-grid, .solutions-grid, .insights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-grid, .metrics-strip-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .product-split-wrap, .deep-case-layout, .contact-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 70px;
            }
            .header-topbar {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .nav-menu {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: #FFFFFF;
                flex-direction: column;
                padding: 30px 24px;
                gap: 18px;
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-150%);
                transition: transform 0.3s ease-in-out;
                z-index: 998;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                transform: translateY(0);
            }
            .nav-cta-btn {
                display: none;
            }
            .section {
                padding: 64px 0;
            }
            .hero-text h1 {
                font-size: 32px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .features-grid, .services-timeline-grid, .advantage-grid, .solutions-grid, .insights-grid, .stories-grid, .metrics-strip-grid, .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .floating-badge {
                display: none;
            }
            .contact-cta-wrapper {
                padding: 36px 20px;
            }
            .contact-form {
                padding: 24px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }
            .mobile-dock-cta {
                display: block;
            }
            body {
                padding-bottom: 68px;
            }
        }