/* roulang page: index */
:root {
            --primary: #0A5C4F;
            --primary-dark: #064037;
            --primary-light: #0E7B6A;
            --teal: #0D9488;
            --teal-accent: #14B8A6;
            --bg-dark: #061A16;
            --bg-dark-card: #0c2b25;
            --surface: #F8FAFA;
            --surface-alt: #EFF4F4;
            --text-main: #0F172A;
            --text-muted: #334155;
            --text-light: #64748B;
            --border: #E2E8F0;
            --border-dark: #1F423B;
            --white: #FFFFFF;
            --amber: #D97706;
            --shadow-sm: 0 2px 8px rgba(10, 92, 79, 0.04);
            --shadow-md: 0 8px 24px -4px rgba(10, 92, 79, 0.08);
            --shadow-lg: 0 16px 36px -6px rgba(10, 92, 79, 0.14);
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-full: 9999px;
            --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", sans-serif;
            background-color: var(--white);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul, ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 顶部通栏 */
        .topbar {
            background-color: #041411;
            color: #94A3B8;
            font-size: 0.825rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 8px 0;
        }
        .topbar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .topbar-badges {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .topbar-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #A7F3D0;
        }
        .topbar-links {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .topbar-links a:hover {
            color: var(--white);
        }

        /* 主导航条 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
        }
        .logo-symbol {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--teal));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-weight: 900;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(10, 92, 79, 0.25);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            position: relative;
            padding: 8px 0;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .header-action {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* 基础按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--white);
            box-shadow: 0 4px 14px rgba(10, 92, 79, 0.2);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            box-shadow: 0 6px 18px rgba(10, 92, 79, 0.3);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background-color: var(--white);
            color: var(--primary);
            border-color: var(--border);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background-color: var(--surface);
        }
        .btn-teal {
            background-color: var(--teal);
            color: var(--white);
        }
        .btn-teal:hover {
            background-color: #0b7a70;
            transform: translateY(-2px);
        }

        /* 标签与修饰 */
        .section-badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            background-color: rgba(13, 148, 136, 0.1);
            color: var(--teal);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-title {
            font-size: 2.15rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .section-intro {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 760px;
            line-height: 1.75;
        }

        /* 板块公用 */
        .section-padding {
            padding-top: 88px;
            padding-bottom: 88px;
        }
        .bg-surface {
            background-color: var(--surface);
        }
        .bg-white {
            background-color: var(--white);
        }
        .bg-graphite {
            background-color: var(--bg-dark);
            color: var(--white);
        }

        /* 板块一：Hero 首屏 卡片堆叠 */
        .hero-section {
            background-image: linear-gradient(135deg, rgba(6, 26, 22, 0.94) 0%, rgba(10, 92, 79, 0.88) 100%), url('/assets/images/5a503540c22a1cc9.webp');
            background-size: cover;
            background-position: center;
            color: var(--white);
            padding: 90px 0 100px;
            position: relative;
            overflow: hidden;
        }
        .hero-layout {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }
        .hero-main h1 {
            font-size: 2.9rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 22px;
            color: var(--white);
            letter-spacing: -0.02em;
        }
        .hero-main p {
            font-size: 1.1rem;
            line-height: 1.8;
            color: #E2E8F0;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 18px;
            margin-bottom: 40px;
        }
        .hero-stats-row {
            display: flex;
            align-items: center;
            gap: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-stat-item h4 {
            font-size: 1.85rem;
            font-weight: 800;
            color: var(--teal-accent);
            line-height: 1;
            margin-bottom: 6px;
        }
        .hero-stat-item p {
            font-size: 0.85rem;
            color: #94A3B8;
            margin: 0;
        }

        /* 首屏堆叠卡片 (主卡+两张侧卡交错) */
        .stack-cards-wrapper {
            position: relative;
            padding: 24px 12px;
        }
        .stack-card {
            background: rgba(255, 255, 255, 0.95);
            color: var(--text-main);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition);
        }
        .stack-card-main {
            position: relative;
            z-index: 3;
            backdrop-filter: blur(8px);
        }
        .stack-card-sub1 {
            position: absolute;
            top: -12px;
            left: 20px;
            right: -16px;
            background: rgba(13, 148, 136, 0.9);
            color: var(--white);
            z-index: 1;
            transform: rotate(2.5deg);
            padding: 16px 20px;
            border-radius: var(--radius-lg);
            opacity: 0.85;
        }
        .stack-card-sub2 {
            position: absolute;
            bottom: -16px;
            left: -12px;
            right: 24px;
            background: #041411;
            color: #E2E8F0;
            z-index: 2;
            transform: rotate(-2deg);
            padding: 16px 20px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-dark);
        }
        .card-header-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }
        .status-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            background: rgba(13, 148, 136, 0.15);
            color: var(--primary);
        }
        .status-dot {
            width: 8px;
            height: 8px;
            background: var(--teal);
            border-radius: 50%;
        }

        /* 闪购/限时秒杀条（硬性蓝图要求） */
        .flash-bar-strip {
            background: linear-gradient(90deg, #92400E, #D97706);
            color: var(--white);
            padding: 14px 0;
            box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.1);
        }
        .flash-bar-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .flash-title-group {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
        }
        .flash-badge {
            background: #78350F;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            text-transform: uppercase;
        }
        .countdown-boxes {
            display: flex;
            align-items: center;
            gap: 6px;
            font-family: monospace;
            font-weight: 700;
        }
        .timer-unit {
            background: rgba(0, 0, 0, 0.35);
            padding: 3px 7px;
            border-radius: 4px;
            font-size: 0.95rem;
        }

        /* 板块二：KPI 看板 (蓝图顺序) */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .kpi-card {
            background: var(--white);
            padding: 32px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            text-align: center;
            transition: var(--transition);
        }
        .kpi-card:hover {
            border-color: var(--teal);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .kpi-num {
            font-size: 2.75rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .kpi-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .kpi-desc {
            font-size: 0.875rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* 板块三：服务矩阵 (服务套件+深度计算) */
        .service-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .service-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--teal);
        }
        .service-card-media {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .service-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .service-card:hover .service-card-media img {
            transform: scale(1.04);
        }
        .service-card-body {
            padding: 28px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card-title {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .service-card-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 20px;
            flex-grow: 1;
        }
        .feature-bullets {
            margin-bottom: 24px;
        }
        .feature-bullets li {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .bullet-point {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--teal);
        }

        /* 板块四：结果对比 (传统模式 vs 生物信息软件加速) */
        .compare-table-wrapper {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .compare-row {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            padding: 20px 28px;
            border-bottom: 1px solid var(--border);
            align-items: center;
        }
        .compare-row:last-child {
            border-bottom: none;
        }
        .compare-head {
            background: var(--surface-alt);
            font-weight: 700;
            color: var(--text-main);
        }
        .col-nndct {
            color: var(--primary);
            font-weight: 600;
        }
        .col-legacy {
            color: var(--text-light);
        }

        /* 板块五：里程碑 (时间线/演进历程) */
        .milestones-flow {
            position: relative;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .milestones-flow::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 5%;
            right: 5%;
            height: 3px;
            background: var(--border);
            z-index: 1;
        }
        .milestone-node {
            position: relative;
            z-index: 2;
            background: var(--surface);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            text-align: center;
        }
        .milestone-badge-dot {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-weight: 700;
            box-shadow: 0 0 0 6px var(--white);
        }

        /* 板块六：资讯动态 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .news-card:hover {
            border-color: var(--teal);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .news-meta {
            font-size: 0.8rem;
            color: var(--teal);
            font-weight: 600;
            margin-bottom: 10px;
        }
        .news-headline {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.45;
        }
        .news-abstract {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 20px;
        }

        /* 板块七：平台保障 */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .guarantee-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
        }
        .guarantee-icon {
            font-size: 2rem;
            margin-bottom: 14px;
            color: var(--teal-accent);
        }

        /* 板块八：快速解答 (Accordion) */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-question {
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-toggle-icon {
            font-size: 1.25rem;
            font-weight: 400;
            transition: transform 0.25s ease;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }
        .faq-item.active .faq-toggle-icon {
            transform: rotate(45deg);
        }

        /* 板块九：扩展板块 - 算法流程步骤 */
        .pipeline-steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .step-box {
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 24px;
            position: relative;
        }
        .step-num {
            font-size: 0.85rem;
            font-weight: 800;
            color: var(--teal);
            margin-bottom: 8px;
        }
        .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        /* 板块十：扩展板块 - 适用客群矩阵 */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-box {
            background: var(--surface);
            padding: 32px 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
        }

        /* 板块十一：扩展板块 - 优惠阶梯与配置计划 */
        .tier-pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .pricing-tier-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .pricing-tier-card.featured {
            border-color: var(--teal);
            box-shadow: var(--shadow-lg);
            transform: scale(1.02);
        }
        .tier-label {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .tier-price {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 20px;
        }

        /* 唯一收口转化区 (CTA Section) */
        .cta-section {
            background: linear-gradient(135deg, #061A16 0%, #0A5C4F 100%);
            color: var(--white);
            padding: 80px 0;
            text-align: center;
        }
        .cta-box {
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: 2.3rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-box p {
            font-size: 1.05rem;
            color: #CBD5E1;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-form-row {
            display: flex;
            gap: 12px;
            max-width: 540px;
            margin: 0 auto 20px;
        }
        .cta-input {
            flex-grow: 1;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.95);
            font-size: 0.95rem;
            outline: none;
            color: var(--text-main);
        }
        .cta-input:focus {
            border-color: var(--teal-accent);
        }

        /* 页脚 */
        .site-footer {
            background-color: #030F0D;
            color: #94A3B8;
            padding-top: 72px;
            padding-bottom: 36px;
            font-size: 0.9rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 56px;
        }
        .footer-title {
            color: var(--white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .footer-links-list li {
            margin-bottom: 12px;
        }
        .footer-links-list a:hover {
            color: var(--teal-accent);
        }
        .footer-bottom {
            padding-top: 32px;
            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: 0.85rem;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-layout {
                grid-template-columns: 1fr;
                gap: 56px;
            }
            .stack-cards-wrapper {
                max-width: 560px;
                margin: 0 auto;
            }
            .kpi-grid, .guarantee-grid, .milestones-flow, .pipeline-steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .milestones-flow::before {
                display: none;
            }
            .service-grid-3, .news-grid, .tier-pricing-grid, .scenarios-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .topbar {
                display: none;
            }
            .nav-menu {
                display: none;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .hero-main h1 {
                font-size: 2.15rem;
            }
            .service-grid-3, .news-grid, .tier-pricing-grid, .scenarios-grid, .kpi-grid, .guarantee-grid, .pipeline-steps-grid {
                grid-template-columns: 1fr;
            }
            .compare-row {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .cta-form-row {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }