/* roulang page: index */
:root {
      --primary: #0F4C3A;
      --primary-hover: #0a3629;
      --secondary: #10B981;
      --accent: #D97706;
      --dark: #0A1F18;
      --darker: #061410;
      --text: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --bg-white: #FFFFFF;
      --bg-light: #F8FAFC;
      --bg-card: #F1F5F9;
      --border: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
      --shadow-card: 0 10px 25px -5px rgba(15, 76, 58, 0.06), 0 8px 10px -6px rgba(15, 76, 58, 0.04);
      --shadow-hover: 0 20px 25px -5px rgba(15, 76, 58, 0.12), 0 10px 10px -5px rgba(15, 76, 58, 0.06);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-body);
      background-color: var(--bg-white);
      line-height: 1.8;
      -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;
      font-size: 1rem;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 顶部导航 */
    .top-bar {
      background-color: var(--darker);
      color: #94A3B8;
      font-size: 0.85rem;
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .top-info-group {
      display: flex;
      gap: 1.5rem;
      align-items: center;
    }
    .top-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      color: var(--secondary);
    }

    .header-main {
      background-color: var(--bg-white);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-sm);
      border-bottom: 1px solid var(--border);
    }
    .nav-wrap {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .logo-mark {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 800;
      font-size: 1.1rem;
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 1.75rem;
      align-items: center;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text);
      padding: 0.5rem 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .btn-header {
      background-color: var(--primary);
      color: #fff;
      padding: 0.6rem 1.35rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9rem;
      box-shadow: var(--shadow-sm);
    }
    .btn-header:hover {
      background-color: var(--primary-hover);
      transform: translateY(-1px);
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
    }
    .nav-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.85rem 1.85rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      gap: 0.5rem;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #fff;
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: var(--shadow-card);
    }
    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background-color: transparent;
    }
    .btn-outline:hover {
      background-color: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }
    .btn-white {
      background-color: #fff;
      color: var(--primary);
      font-weight: 700;
    }
    .btn-white:hover {
      background-color: #F8FAFC;
      transform: translateY(-2px);
      box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    }
    .btn-secondary {
      background-color: var(--secondary);
      color: #fff;
    }
    .btn-secondary:hover {
      background-color: #059669;
      transform: translateY(-2px);
    }

    /* 通用板块与排版 */
    section {
      padding: 5.5rem 0;
      position: relative;
    }
    .section-light {
      background-color: var(--bg-light);
    }
    .section-dark {
      background-color: var(--dark);
      color: #F8FAFC;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-dark .section-subtitle {
      color: #94A3B8;
    }
    .section-header {
      margin-bottom: 3.5rem;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
      margin-bottom: 3.5rem;
    }
    .tag-badge {
      display: inline-block;
      padding: 0.3rem 0.85rem;
      background-color: rgba(16, 185, 129, 0.12);
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: 9999px;
      margin-bottom: 0.85rem;
      letter-spacing: 0.5px;
    }
    .section-dark .tag-badge {
      background-color: rgba(16, 185, 129, 0.2);
      color: var(--secondary);
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text);
      line-height: 1.35;
      letter-spacing: -0.5px;
      margin-bottom: 1rem;
    }
    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* 板块 1: Hero（短问卷测评交互 + 研发总览） */
    #hero {
      position: relative;
      background: linear-gradient(135deg, rgba(15, 76, 58, 0.95), rgba(6, 20, 16, 0.96)), url('/assets/images/e1465aeda734481f.jpg') center/cover no-repeat;
      color: #fff;
      padding: 5.5rem 0 6rem;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3.5rem;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 1.5rem;
      letter-spacing: -0.5px;
    }
    .hero-content h1 span {
      color: var(--secondary);
    }
    .hero-intro {
      font-size: 1.1rem;
      line-height: 1.85;
      color: #E2E8F0;
      margin-bottom: 2rem;
    }
    .hero-trust-row {
      display: flex;
      gap: 2rem;
      align-items: center;
      margin-top: 2rem;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
    }
    .hero-trust-item {
      display: flex;
      flex-direction: column;
    }
    .hero-trust-num {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--secondary);
    }
    .hero-trust-desc {
      font-size: 0.85rem;
      color: #94A3B8;
    }
    /* 测评短卡片 */
    .eval-box {
      background: #FFFFFF;
      color: var(--text);
      padding: 2.25rem;
      border-radius: var(--radius-md);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    }
    .eval-box h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 0.5rem;
    }
    .eval-box p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
    }
    .eval-form-group {
      margin-bottom: 1.15rem;
    }
    .eval-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 0.4rem;
      color: var(--text);
    }
    .eval-select, .eval-input {
      width: 100%;
      height: 46px;
      padding: 0 0.85rem;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      outline: none;
      transition: var(--transition);
      background-color: var(--bg-light);
    }
    .eval-select:focus, .eval-input:focus {
      border-color: var(--secondary);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
    }
    .eval-result-preview {
      background: rgba(16, 185, 129, 0.08);
      border: 1px dashed var(--secondary);
      border-radius: var(--radius-sm);
      padding: 1rem;
      margin: 1.25rem 0;
      font-size: 0.85rem;
      color: var(--primary);
    }

    /* 板块 2: 数据看板 */
    #metrics {
      padding: 3rem 0;
      background-color: var(--bg-card);
      border-bottom: 1px solid var(--border);
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .metric-item {
      background: var(--bg-white);
      padding: 1.75rem 1.5rem;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }
    .metric-val-wrap {
      display: flex;
      align-items: baseline;
      gap: 0.4rem;
      margin-bottom: 0.4rem;
    }
    .metric-value {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--primary);
      font-family: monospace, sans-serif;
    }
    .metric-unit {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--secondary);
    }
    .metric-badge {
      display: inline-flex;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent);
      background: #FEF3C7;
      padding: 0.15rem 0.5rem;
      border-radius: 4px;
      margin-bottom: 0.5rem;
    }
    .metric-label {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 0.25rem;
    }
    .metric-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 3: 研发体系与基地 */
    .base-grid {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: 3.5rem;
      align-items: center;
    }
    .base-media {
      position: relative;
    }
    .base-media img {
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .base-floating-card {
      position: absolute;
      bottom: -1.5rem;
      right: -1.5rem;
      background: var(--bg-white);
      padding: 1.25rem 1.5rem;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-hover);
      border-left: 4px solid var(--primary);
      max-width: 260px;
    }
    .base-floating-card h4 {
      font-size: 0.95rem;
      color: var(--text);
      margin-bottom: 0.25rem;
    }
    .base-floating-card p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .spec-table {
      width: 100%;
      margin-top: 1.75rem;
      border-collapse: collapse;
    }
    .spec-table th, .spec-table td {
      padding: 0.85rem 1rem;
      font-size: 0.9rem;
      border-bottom: 1px solid var(--border);
      text-align: left;
    }
    .spec-table th {
      color: var(--text);
      font-weight: 700;
      background: var(--bg-light);
    }

    /* 板块 4: 服务矩阵（六卡片） */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .service-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 2.25rem 1.75rem;
      transition: var(--transition);
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }
    .service-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-sm);
      background: rgba(15, 76, 58, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 1.25rem;
    }
    .service-card h3 {
      font-size: 1.2rem;
      color: var(--text);
      margin-bottom: 0.75rem;
    }
    .service-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
    }
    .service-tags span {
      background: var(--bg-light);
      padding: 0.25rem 0.6rem;
      border-radius: 4px;
      font-size: 0.8rem;
      color: var(--text-body);
    }

    /* 板块 5: 热门定制酶系 */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .product-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .product-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .product-card.featured {
      border: 2px solid var(--secondary);
      position: relative;
    }
    .product-badge-top {
      position: absolute;
      top: 1rem;
      right: 1rem;
      background: var(--secondary);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      z-index: 2;
    }
    .product-img {
      height: 220px;
      overflow: hidden;
      position: relative;
    }
    .product-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .product-card:hover .product-img img {
      transform: scale(1.05);
    }
    .product-body {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-body h3 {
      font-size: 1.25rem;
      color: var(--text);
      margin-bottom: 0.5rem;
    }
    .product-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 1.25rem;
      line-height: 1.6;
    }
    .param-list {
      background: var(--bg-light);
      padding: 1rem;
      border-radius: var(--radius-sm);
      margin-bottom: 1.5rem;
    }
    .param-row {
      display: flex;
      justify-content: space-between;
      font-size: 0.85rem;
      padding: 0.3rem 0;
      border-bottom: 1px dashed var(--border);
    }
    .param-row:last-child {
      border-bottom: none;
    }
    .param-name {
      color: var(--text-muted);
    }
    .param-val {
      font-weight: 600;
      color: var(--text);
    }

    /* 板块 6: 深色案例与反应器中试 */
    .scaleup-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .scaleup-console {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 2rem;
      font-family: monospace, sans-serif;
    }
    .console-header {
      display: flex;
      gap: 0.5rem;
      margin-bottom: 1.5rem;
      padding-bottom: 0.75rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .console-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.2);
    }
    .console-dot:nth-child(1) { background: #EF4444; }
    .console-dot:nth-child(2) { background: #F59E0B; }
    .console-dot:nth-child(3) { background: #10B981; }
    .console-line {
      display: flex;
      justify-content: space-between;
      margin-bottom: 1rem;
      font-size: 0.9rem;
      color: #94A3B8;
    }
    .console-val {
      color: var(--secondary);
      font-weight: 700;
    }

    /* 板块 7: 结果对比区 */
    .compare-container {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    .compare-header-row {
      display: grid;
      grid-template-columns: 2fr 3fr 3fr;
      padding: 1.25rem 2rem;
      background: var(--bg-light);
      font-weight: 700;
      color: var(--text);
      border-bottom: 1px solid var(--border);
    }
    .compare-row {
      display: grid;
      grid-template-columns: 2fr 3fr 3fr;
      padding: 1.5rem 2rem;
      align-items: center;
      border-bottom: 1px solid var(--border);
    }
    .compare-row:last-child {
      border-bottom: none;
    }
    .compare-name {
      font-weight: 600;
      color: var(--text);
    }
    .compare-bar-wrap {
      display: flex;
      flex-direction: column;
      gap: 0.35rem;
      padding-right: 1.5rem;
    }
    .progress-track {
      height: 10px;
      background: var(--bg-card);
      border-radius: 9999px;
      overflow: hidden;
    }
    .progress-fill-gray {
      height: 100%;
      background: #94A3B8;
      border-radius: 9999px;
    }
    .progress-fill-green {
      height: 100%;
      background: linear-gradient(90deg, var(--secondary), var(--primary));
      border-radius: 9999px;
    }
    .progress-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
    }
    .highlight-win {
      color: var(--primary);
      font-weight: 700;
    }

    /* 板块 8: 研发里程碑 */
    .timeline-wrap {
      position: relative;
      max-width: 960px;
      margin: 0 auto;
    }
    .timeline-wrap::before {
      content: "";
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: var(--border);
      transform: translateX(-50%);
    }
    .timeline-item {
      position: relative;
      margin-bottom: 3rem;
      width: 50%;
    }
    .timeline-item:nth-child(odd) {
      left: 0;
      padding-right: 3rem;
      text-align: right;
    }
    .timeline-item:nth-child(even) {
      left: 50%;
      padding-left: 3rem;
      text-align: left;
    }
    .timeline-dot {
      position: absolute;
      top: 0.5rem;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--bg-white);
      border: 4px solid var(--secondary);
      z-index: 2;
    }
    .timeline-item:nth-child(odd) .timeline-dot {
      right: -10px;
    }
    .timeline-item:nth-child(even) .timeline-dot {
      left: -10px;
    }
    .timeline-card {
      background: var(--bg-white);
      padding: 1.5rem;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }
    .timeline-code {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 0.35rem;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .timeline-card h4 {
      font-size: 1.1rem;
      color: var(--text);
      margin-bottom: 0.5rem;
    }
    .timeline-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 9: 应用场景 */
    .scene-wrap {
      display: grid;
      grid-template-columns: 320px 1fr;
      gap: 2.5rem;
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .scene-tabs {
      background: var(--bg-light);
      border-right: 1px solid var(--border);
      padding: 1.5rem 1rem;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .scene-tab-btn {
      padding: 1rem 1.25rem;
      text-align: left;
      background: none;
      border: none;
      border-radius: var(--radius-sm);
      font-weight: 600;
      color: var(--text-body);
      cursor: pointer;
      transition: var(--transition);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .scene-tab-btn:hover {
      background: rgba(16, 185, 129, 0.08);
      color: var(--primary);
    }
    .scene-tab-btn.active {
      background: var(--primary);
      color: #fff;
    }
    .scene-content-pane {
      padding: 2.5rem 2.5rem 2.5rem 1rem;
    }
    .scene-content-item {
      display: none;
    }
    .scene-content-item.active {
      display: block;
    }
    .scene-header-box {
      margin-bottom: 1.5rem;
    }
    .scene-header-box h3 {
      font-size: 1.5rem;
      color: var(--text);
      margin-bottom: 0.5rem;
    }
    .scene-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.25rem;
      margin: 1.75rem 0;
      padding: 1.25rem;
      background: var(--bg-light);
      border-radius: var(--radius-sm);
    }
    .scene-stat-item h5 {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 0.25rem;
    }
    .scene-stat-item span {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
    }

    /* 板块 10: 资讯白皮书 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      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-img {
      height: 200px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .news-card:hover .news-img img {
      transform: scale(1.05);
    }
    .news-body {
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 0.5rem;
    }
    .news-body h4 {
      font-size: 1.15rem;
      color: var(--text);
      margin-bottom: 0.75rem;
      line-height: 1.45;
    }
    .news-body p {
      font-size: 0.85rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    /* 板块 11: FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.open {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      padding: 1.25rem 1.5rem;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-icon {
      font-size: 1.25rem;
      line-height: 1;
      color: var(--primary);
      transition: var(--transition);
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: var(--bg-light);
    }
    .faq-answer-inner {
      padding: 1.25rem 1.5rem;
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.8;
      border-top: 1px solid var(--border);
    }

    /* 板块 12: 需求评估表单 */
    .contact-card-wrap {
      background: linear-gradient(135deg, rgba(15, 76, 58, 0.05), rgba(16, 185, 129, 0.05));
      border: 1px solid rgba(15, 76, 58, 0.15);
      border-radius: var(--radius-lg);
      padding: 3.5rem;
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
    }
    .contact-left h3 {
      font-size: 1.85rem;
      color: var(--text);
      margin-bottom: 1rem;
    }
    .contact-left p {
      font-size: 0.95rem;
      color: var(--text-body);
      margin-bottom: 2rem;
      line-height: 1.8;
    }
    .commit-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }
    .commit-item {
      display: flex;
      gap: 1rem;
      align-items: flex-start;
    }
    .commit-check {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      flex-shrink: 0;
      margin-top: 0.2rem;
    }
    .commit-text h5 {
      font-size: 0.95rem;
      color: var(--text);
      margin-bottom: 0.2rem;
    }
    .commit-text p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 0;
      line-height: 1.5;
    }
    .form-box {
      background: var(--bg-white);
      padding: 2.25rem;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border);
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-group label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 0.4rem;
    }
    .form-control {
      width: 100%;
      height: 48px;
      padding: 0 1rem;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      outline: none;
      transition: var(--transition);
      background-color: var(--bg-light);
    }
    textarea.form-control {
      height: auto;
      padding: 0.75rem 1rem;
      resize: vertical;
    }
    .form-control:focus {
      border-color: var(--primary);
      background-color: #fff;
      box-shadow: 0 0 0 3px rgba(15, 76, 58, 0.15);
    }
    .form-submit-btn {
      width: 100%;
      height: 50px;
      background: var(--primary);
      color: #fff;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      margin-top: 0.5rem;
    }
    .form-submit-btn:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }

    /* 页脚 */
    footer {
      background: var(--darker);
      color: #94A3B8;
      padding: 4.5rem 0 2rem;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-brand-title {
      font-size: 1.35rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 0.85rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-brand-p {
      line-height: 1.8;
      margin-bottom: 1.25rem;
      font-size: 0.85rem;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }
    .footer-links a:hover {
      color: var(--secondary);
      padding-left: 4px;
    }
    .contact-info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
      font-size: 0.85rem;
    }
    .contact-info-list li {
      line-height: 1.6;
    }
    .footer-bottom {
      padding-top: 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .base-grid, .scaleup-grid, .contact-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-grid, .product-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scene-wrap {
        grid-template-columns: 1fr;
      }
      .scene-tabs {
        border-right: none;
        border-bottom: 1px solid var(--border);
        flex-direction: row;
        overflow-x: auto;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        position: fixed;
        top: 76px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 76px);
        background: #fff;
        flex-direction: column;
        padding: 2rem;
        transition: 0.3s;
        box-shadow: var(--shadow-md);
      }
      .nav-menu.show {
        left: 0;
      }
      .nav-toggle {
        display: block;
      }
      .nav-actions .btn-header {
        display: none;
      }
      .hero-content h1 {
        font-size: 2rem;
      }
      .metrics-grid, .service-grid, .product-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .timeline-wrap::before {
        left: 20px;
      }
      .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 50px !important;
        padding-right: 0 !important;
        text-align: left !important;
      }
      .timeline-item .timeline-dot {
        left: 10px !important;
        right: auto !important;
      }
      .contact-card-wrap {
        padding: 1.5rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }