/* roulang page: index */
:root {
      --primary: #0A6C74;
      --primary-hover: #08565C;
      --accent: #00B4B6;
      --warning: #E67E22;
      --dark-bg: #0F2027;
      --dark-surface: #1B2E35;
      --page-bg: #F7FAFA;
      --card-bg: #FFFFFF;
      --alt-bg: #EEF5F5;
      --text-main: #16282E;
      --text-regular: #3A4F56;
      --text-muted: #6B828A;
      --border-color: #DEEAEC;
      --shadow-sm: 0 4px 20px rgba(10, 108, 116, 0.06);
      --shadow-hover: 0 12px 30px rgba(10, 108, 116, 0.14);
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --transition: all 0.28s ease-in-out;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--page-bg);
      color: var(--text-regular);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    a { color: inherit; text-decoration: none; transition: var(--transition); }
    img { max-width: 100%; height: auto; display: block; }
    button, input, select, textarea { font-family: inherit; }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶栏微条 */
    .utility-bar {
      background: #091C22;
      color: #90A4AE;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .utility-wrap {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .utility-tags span { margin-right: 18px; }
    .utility-contact a { color: #CFD8DC; margin-left: 16px; }

    /* 主导航 */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      box-shadow: 0 2px 16px rgba(10, 108, 116, 0.08);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 0.02em;
    }
    .brand-logo svg { width: 32px; height: 32px; fill: var(--primary); }
    .nav-links {
      display: flex;
      list-style: none;
      gap: 24px;
      align-items: center;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 2px;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-links a.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      box-shadow: 0 4px 14px rgba(10, 108, 116, 0.3);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--alt-bg);
      color: var(--primary-hover);
    }
    .btn-warning {
      background: var(--warning);
      color: #fff;
    }
    .btn-warning:hover {
      background: #D35400;
      box-shadow: 0 4px 14px rgba(230, 126, 34, 0.3);
    }

    /* 板块公共规则 */
    .section-block {
      padding: 80px 0;
    }
    .section-alt {
      background-color: var(--alt-bg);
    }
    .section-dark {
      background: linear-gradient(135deg, #0F2027 0%, #203A43 100%);
      color: #fff;
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center { text-align: center; }
    .section-badge {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: rgba(10, 108, 116, 0.08);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .section-dark .section-badge {
      background: rgba(0, 180, 182, 0.2);
      color: var(--accent);
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: 0.02em;
    }
    .section-dark .section-title { color: #fff; }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto;
      line-height: 1.8;
    }
    .section-dark .section-desc { color: #B0BEC5; }

    /* 蓝图 Hero：品牌旗舰大图展区 */
    .hero-flagship {
      position: relative;
      background: url('/assets/images/73151fc375888313.jpg') center center / cover no-repeat;
      padding: 100px 0 130px;
      color: #fff;
    }
    .hero-overlay {
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: linear-gradient(90deg, rgba(15, 32, 39, 0.94) 0%, rgba(15, 32, 39, 0.82) 55%, rgba(10, 108, 116, 0.55) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 840px;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 180, 182, 0.25);
      border: 1px solid var(--accent);
      color: #E0F7FA;
      padding: 6px 14px;
      font-size: 13px;
      border-radius: var(--radius-sm);
      margin-bottom: 20px;
    }
    .hero-title {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 22px;
      color: #ffffff;
    }
    .hero-summary {
      font-size: 16px;
      line-height: 1.85;
      color: #CFD8DC;
      margin-bottom: 34px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    /* 旗舰店系列导航条叠放大图 */
    .hero-series-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(12px);
      padding: 16px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .strip-item {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #ECEFF1;
      font-size: 14px;
    }
    .strip-item svg { width: 20px; height: 20px; fill: var(--accent); flex-shrink: 0; }
    .strip-item b { display: block; color: #fff; font-size: 15px; }

    /* 板块 2：临床痛点与问题陈述 */
    .problem-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .problem-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border-top: 4px solid var(--warning);
    }
    .problem-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .problem-card h3 { font-size: 1.2rem; color: var(--text-main); margin-bottom: 12px; }
    .problem-card p { font-size: 14px; color: var(--text-regular); line-height: 1.7; }

    /* 板块 3：技术平台操作演示 */
    .demo-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .demo-img-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border-color);
    }
    .demo-steps {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .demo-step-item {
      display: flex;
      gap: 16px;
      background: var(--card-bg);
      padding: 18px 20px;
      border-radius: var(--radius-md);
      border-left: 4px solid var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .step-num {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      font-weight: bold;
      flex-shrink: 0;
    }
    .step-text h4 { font-size: 1.05rem; color: var(--text-main); margin-bottom: 4px; }
    .step-text p { font-size: 13.5px; color: var(--text-muted); line-height: 1.6; }

    /* 板块 4：结果预览（报告结构与决策卡） */
    .result-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .result-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .result-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .result-header {
      background: #E8F4F5;
      padding: 14px 18px;
      font-weight: 600;
      color: var(--primary);
      font-size: 15px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .result-body {
      padding: 20px 18px;
      font-size: 13.5px;
      color: var(--text-regular);
      line-height: 1.7;
    }
    .result-tag {
      display: inline-block;
      margin-top: 10px;
      font-size: 12px;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      background: #EBF8F7;
      color: var(--primary);
    }

    /* 板块 5：科研与临床优势矩阵 */
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: var(--card-bg);
      padding: 28px 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .adv-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
    }
    .adv-card .icon-box {
      width: 44px;
      height: 44px;
      background: rgba(10, 108, 116, 0.08);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }
    .adv-card .icon-box svg { width: 24px; height: 24px; fill: var(--primary); }
    .adv-card h3 { font-size: 1.15rem; color: var(--text-main); margin-bottom: 10px; }
    .adv-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

    /* 板块 6：核心多组学检测管线 */
    .pipeline-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pipeline-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .pipeline-card img { height: 180px; width: 100%; object-fit: cover; }
    .pipeline-body { padding: 24px; flex-grow: 1; display: flex; flex-direction: column; }
    .pipeline-badge {
      align-self: flex-start;
      background: #E0F2F1;
      color: var(--primary);
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }
    .pipeline-body h3 { font-size: 1.25rem; color: var(--text-main); margin-bottom: 10px; }
    .pipeline-body p { font-size: 14px; color: var(--text-regular); margin-bottom: 16px; flex-grow: 1; }
    .pipeline-foot { border-top: 1px solid #EDF2F4; padding-top: 14px; font-size: 13px; color: var(--text-muted); }

    /* 板块 7：深色科研攻关专区 */
    .solution-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 36px;
    }
    .flow-item {
      background: var(--dark-surface);
      border: 1px solid rgba(255,255,255,0.1);
      padding: 24px 20px;
      border-radius: var(--radius-lg);
      position: relative;
    }
    .flow-item span.num {
      font-size: 24px;
      font-weight: bold;
      color: var(--accent);
      margin-bottom: 8px;
      display: block;
    }
    .flow-item h4 { font-size: 16px; color: #fff; margin-bottom: 8px; }
    .flow-item p { font-size: 13px; color: #B0BEC5; line-height: 1.6; }

    /* 板块 8：关键吞吐指标统计 */
    .stats-strip {
      background: #0D3E42;
      color: #fff;
      padding: 48px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      text-align: center;
      gap: 24px;
    }
    .stat-number {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .stat-label { font-size: 14px; color: #CFD8DC; letter-spacing: 0.05em; }

    /* 板块 9：常见卡住点与合规解析 (替代泛化FAQ) */
    .obstacle-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .obstacle-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 24px 26px;
      box-shadow: var(--shadow-sm);
    }
    .obstacle-card h4 {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .obstacle-card h4 svg { width: 20px; height: 20px; fill: var(--warning); flex-shrink: 0; }
    .obstacle-card p { font-size: 14px; color: var(--text-regular); line-height: 1.7; }

    /* 板块 10：成功路径与多中心转化 */
    .success-path-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
    }
    .path-content-block h3 { font-size: 1.5rem; color: var(--text-main); margin-bottom: 16px; }
    .path-content-block p { font-size: 14.5px; color: var(--text-regular); margin-bottom: 20px; line-height: 1.8; }
    .path-bullets { list-style: none; display: flex; flex-direction: column; gap: 12px; }
    .path-bullets li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; }
    .path-bullets svg { width: 18px; height: 18px; fill: var(--primary); margin-top: 3px; flex-shrink: 0; }

    /* 板块 11：临床资讯与学术前沿 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .news-tag {
      background: #E0F2F1;
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 3px;
      font-weight: 600;
    }
    .news-card h3 { font-size: 1.15rem; color: var(--text-main); margin-bottom: 10px; line-height: 1.4; }
    .news-card p { font-size: 13.5px; color: var(--text-regular); line-height: 1.7; flex-grow: 1; }

    /* 板块 12：开始使用与对接申请表单 */
    .cta-card {
      background: linear-gradient(135deg, #0A6C74 0%, #164047 100%);
      border-radius: 16px;
      padding: 60px 48px;
      color: #fff;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      box-shadow: 0 16px 40px rgba(10, 108, 116, 0.2);
    }
    .cta-text h2 { font-size: 2.2rem; margin-bottom: 16px; line-height: 1.3; }
    .cta-text p { font-size: 15px; color: #B2DFDB; line-height: 1.8; margin-bottom: 24px; }
    .form-box {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      color: var(--text-main);
      box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    }
    .form-group { margin-bottom: 16px; }
    .form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-main); }
    .form-control {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 14px;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(10, 108, 116, 0.15); }
    .form-footer-note { font-size: 12px; color: var(--text-muted); margin-top: 12px; text-align: center; }

    /* 页脚 */
    .site-footer {
      background: #091C22;
      color: #90A4AE;
      padding: 70px 0 24px;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; font-weight: 600; }
    .footer-col p { line-height: 1.8; font-size: 13.5px; }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .footer-links a:hover { color: #fff; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* 移动端汉堡切换 */
    .menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
    .menu-toggle svg { width: 28px; height: 28px; fill: var(--primary); }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .problem-grid, .adv-grid, .pipeline-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
      .hero-series-strip { grid-template-columns: repeat(2, 1fr); }
      .result-grid, .solution-flow, .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .cta-card { grid-template-columns: 1fr; gap: 32px; padding: 40px 24px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .utility-bar { display: none; }
      .menu-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active { display: flex; }
      .hero-title { font-size: 2.1rem; }
      .section-title { font-size: 1.7rem; }
      .demo-wrapper, .obstacle-grid, .success-path-grid { grid-template-columns: 1fr; }
      .problem-grid, .adv-grid, .pipeline-grid, .news-grid, .hero-series-strip, .result-grid, .solution-flow, .stats-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    }