/* roulang page: index */
:root {
      --primary: #0D5C3A;
      --primary-light: #00A862;
      --primary-dark: #073B25;
      --accent-warning: #F39C12;
      --accent-danger: #E74C3C;
      --text-main: #1E293B;
      --text-body: #334155;
      --text-muted: #64748B;
      --bg-body: #F4F6F8;
      --bg-white: #FFFFFF;
      --bg-dark: #0D1117;
      --bg-dark-card: #161B22;
      --border-color: #E2E8F0;
      --border-dark: #30363D;
      --radius: 8px;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      --container-max: 1240px;
    }

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

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
      line-height: 1.75;
      color: var(--text-body);
      background-color: var(--bg-body);
      -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: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* Topbar */
    .top-bar {
      background-color: #EEF2F6;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.85rem;
      color: var(--text-muted);
      height: 38px;
      display: flex;
      align-items: center;
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }

    .top-bar-left {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .top-bar-badge {
      background-color: #E2E8F0;
      color: var(--primary-dark);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      font-size: 0.75rem;
    }

    .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    /* Main Navigation Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background-color: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }

    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 900;
      font-size: 1.1rem;
      box-shadow: 0 2px 6px rgba(13, 92, 58, 0.3);
    }

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

    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      position: relative;
      padding: 8px 0;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary);
      transition: var(--transition);
    }

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

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      border-radius: var(--radius);
      font-weight: 600;
      font-size: 0.92rem;
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      min-height: 42px;
    }

    .btn-primary {
      background-color: var(--primary);
      color: #FFF;
    }

    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(13, 92, 58, 0.25);
    }

    .btn-secondary {
      background-color: #FFF;
      color: var(--primary);
      border-color: var(--primary);
    }

    .btn-secondary:hover {
      background-color: #F0FDF4;
      transform: translateY(-2px);
    }

    .btn-warning {
      background-color: var(--accent-warning);
      color: #FFF;
    }

    .btn-warning:hover {
      background-color: #D68910;
      transform: translateY(-2px);
    }

    .mobile-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
      padding: 8px;
    }

    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      transition: var(--transition);
    }

    /* Section Global Styles */
    section {
      padding: 80px 0;
      position: relative;
    }

    .section-dark {
      background-color: var(--bg-dark);
      color: #F0F6FC;
    }

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

    .section-muted {
      background-color: #F8FAFC;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      margin-bottom: 48px;
    }

    .section-header.text-center {
      text-align: center;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background-color: #E8F5E9;
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
    }

    .section-tag-warning {
      color: #B7791F;
      background-color: #FEFCBF;
    }

    .section-tag-dark {
      color: var(--primary-light);
      background-color: rgba(0, 168, 98, 0.15);
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .section-dark .section-title {
      color: #FFFFFF;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    .section-dark .section-subtitle {
      color: #8B949E;
    }

    /* 1. Hero Section - 本地化感与工装展台 */
    .hero-section {
      background: linear-gradient(180deg, #FFFFFF 0%, #F4F6F8 100%);
      padding: 60px 0 80px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-meta-strip {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 20px;
      flex-wrap: wrap;
    }

    .hero-location-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background-color: #FFF;
      border: 1px solid var(--border-color);
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.82rem;
      color: var(--text-muted);
      box-shadow: var(--shadow-sm);
    }

    .hero-location-badge .dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary-light);
      border-radius: 50%;
    }

    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-h1 span {
      color: var(--primary);
    }

    .hero-desc {
      font-size: 1.1rem;
      color: var(--text-body);
      margin-bottom: 32px;
      line-height: 1.85;
    }

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

    .hero-specs-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }

    .spec-item-num {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary-dark);
      display: block;
    }

    .spec-item-lbl {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .hero-visual-card {
      background-color: #FFF;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-md);
      position: relative;
    }

    .hero-image-wrap {
      position: relative;
      height: 340px;
      overflow: hidden;
    }

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

    .hero-img-badge {
      position: absolute;
      top: 16px;
      right: 16px;
      background-color: rgba(13, 17, 23, 0.85);
      backdrop-filter: blur(4px);
      color: #FFF;
      padding: 6px 14px;
      border-radius: 4px;
      font-size: 0.8rem;
      font-weight: 600;
      border-left: 3px solid var(--primary-light);
    }

    .hero-local-entries {
      padding: 20px;
      background-color: #FAFBFD;
      border-top: 1px solid var(--border-color);
    }

    .hero-entry-title {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .hero-entry-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .entry-chip {
      font-size: 0.8rem;
      background: #FFF;
      border: 1px solid var(--border-color);
      padding: 4px 10px;
      border-radius: 4px;
      color: var(--text-body);
    }

    /* 2. 板块二：痛点与危险解构 (Pain Points) */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .pain-card {
      background-color: #FFF;
      border: 1px solid var(--border-color);
      border-top: 4px solid var(--accent-danger);
      border-radius: var(--radius);
      padding: 28px 20px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .pain-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .pain-card.warning-type {
      border-top-color: var(--accent-warning);
    }

    .pain-code {
      font-size: 0.75rem;
      font-weight: 800;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .pain-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .pain-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 3. 板块三：品牌与高压绝缘专用系列总览 (Brand & Product Overview) */
    .overview-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .overview-visual {
      position: relative;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

    .overview-visual img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .cert-seal-box {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background-color: rgba(255, 255, 255, 0.95);
      padding: 12px 18px;
      border-radius: 6px;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }

    .cert-seal-title {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--primary-dark);
    }

    .cert-seal-val {
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--text-main);
    }

    .overview-detail h3 {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .overview-text {
      font-size: 0.96rem;
      color: var(--text-body);
      margin-bottom: 24px;
      line-height: 1.8;
    }

    .param-matrix {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 24px;
    }

    .param-box {
      background-color: #F8FAFC;
      border: 1px solid var(--border-color);
      padding: 14px;
      border-radius: 6px;
    }

    .param-label {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 4px;
    }

    .param-val {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }

    /* 4. 板块四：六维核心工业优势 (6-Card Advantage) */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .adv-card {
      background-color: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .adv-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-light);
    }

    .adv-icon-box {
      width: 48px;
      height: 48px;
      background-color: #E8F5E9;
      color: var(--primary);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1.25rem;
      margin-bottom: 20px;
    }

    .adv-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .adv-desc {
      font-size: 0.92rem;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 5. 板块五：热门产品矩阵 (3-Product Showcase) */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .product-card {
      background-color: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .product-img-box {
      position: relative;
      height: 220px;
      overflow: hidden;
      background-color: #EEF2F6;
    }

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

    .product-card:hover .product-img-box img {
      transform: scale(1.04);
    }

    .product-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background-color: var(--primary);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
    }

    .product-content {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .product-model {
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 6px;
    }

    .product-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .product-points {
      list-style: none;
      margin-bottom: 20px;
      font-size: 0.88rem;
      color: var(--text-muted);
      flex: 1;
    }

    .product-points li {
      margin-bottom: 8px;
      padding-left: 16px;
      position: relative;
    }

    .product-points li::before {
      content: "•";
      position: absolute;
      left: 0;
      color: var(--primary-light);
      font-weight: bold;
    }

    .product-footer {
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .product-spec-val {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 6. 板块六：标准化工艺流程步进器 (Step Flow) */
    .step-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-timeline::before {
      content: '';
      position: absolute;
      top: 40px;
      left: 5%;
      right: 5%;
      height: 2px;
      background-color: var(--border-color);
      z-index: 1;
    }

    .step-card {
      position: relative;
      z-index: 2;
      background-color: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px 18px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 44px;
      height: 44px;
      margin: 0 auto 16px auto;
      border-radius: 50%;
      background: var(--primary);
      color: #FFF;
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 4px solid #FFF;
      box-shadow: var(--shadow-sm);
    }

    .step-name {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .step-tool-badge {
      display: inline-block;
      font-size: 0.78rem;
      background-color: #E8F5E9;
      color: var(--primary-dark);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    /* 7. 板块七：深色工业极限测试与安全理念 (Dark Contrast Concept) */
    .dark-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .dark-content h2 {
      font-size: 2.2rem;
      font-weight: 800;
      color: #FFF;
      margin-bottom: 18px;
    }

    .dark-content p {
      font-size: 1rem;
      color: #8B949E;
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .dark-test-items {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .test-item {
      background-color: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      padding: 16px 20px;
      border-radius: 6px;
      border-left: 3px solid var(--primary-light);
    }

    .test-item-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: #F0F6FC;
      margin-bottom: 4px;
    }

    .test-item-desc {
      font-size: 0.85rem;
      color: #8B949E;
    }

    .dark-visual-card {
      background-color: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    }

    .dark-data-row {
      display: flex;justify-content: space-between;
      border-bottom: 1px solid var(--border-dark);
      padding: 14px 0;
      font-size: 0.9rem;
    }

    .dark-data-row:last-child {
      border-bottom: none;
    }

    .dark-data-name {
      color: #8B949E;
    }

    .dark-data-val {
      color: var(--primary-light);
      font-weight: 700;
      font-family: monospace;
      font-size: 1rem;
    }

    /* 8. 板块八：售后工位实操案例 (User Story) */
    .story-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      background-color: #FFF;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .story-image-wrap {
      height: 100%;
      min-height: 400px;
    }

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

    .story-content {
      padding: 40px 36px;
    }

    .story-badge {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--primary);
      background-color: #E8F5E9;
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 12px;
    }

    .story-title {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.4;
    }

    .story-quote {
      font-size: 0.96rem;
      color: var(--text-body);
      line-height: 1.8;
      border-left: 3px solid var(--primary);
      padding-left: 16px;
      margin-bottom: 24px;
      font-style: italic;
    }

    .story-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .story-author-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .story-author-info p {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 9. 板块九：关键效能数据指标条 (Key Metrics Bar) */
    .metrics-bar-section {
      background: linear-gradient(135deg, var(--primary-dark), #0A2F1D);
      padding: 48px 0;
      color: #FFF;
    }

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

    .metric-card {
      border-right: 1px solid rgba(255, 255, 255, 0.12);
      padding: 0 16px;
    }

    .metric-card:last-child {
      border-right: none;
    }

    .metric-number {
      font-size: 2.6rem;
      font-weight: 900;
      color: #FFF;
      line-height: 1.1;
      margin-bottom: 8px;
      letter-spacing: -0.5px;
    }

    .metric-number span {
      color: var(--accent-warning);
    }

    .metric-label {
      font-size: 0.88rem;
      color: #D1D5DB;
      font-weight: 500;
    }

    /* 10. 板块十：行业客户评价墙 (Testimonials) */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testimonial-card {
      background-color: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-stars {
      color: #F59E0B;
      font-size: 1rem;
      margin-bottom: 14px;
    }

    .testimonial-comment {
      font-size: 0.94rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 20px;
    }

    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .user-avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background-color: #E2E8F0;
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
    }

    .user-meta h4 {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-meta p {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* 11. 板块十一：技术资讯卡片 (News & Tech Articles) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background-color: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .news-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .news-img-box {
      height: 180px;
      overflow: hidden;
    }

    .news-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .news-body {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .news-meta-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
    }

    .news-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      background-color: #E8F5E9;
      padding: 2px 8px;
      border-radius: 4px;
    }

    .news-date {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    .news-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }

    .news-snippet {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex: 1;
    }

    .news-action {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 12. 板块十二：FAQ 常见技术答疑 (Accordion System) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background-color: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      margin-bottom: 16px;
      overflow: hidden;
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      transition: var(--transition);
    }

    .faq-question:hover {
      background-color: #FAFBFD;
      color: var(--primary);
    }

    .faq-arrow {
      font-size: 1.2rem;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background-color: #FFFFFF;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 240px;
      padding: 0 24px 20px 24px;
    }

    .faq-answer p {
      font-size: 0.93rem;
      color: var(--text-body);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    /* 13. 板块十三：全天候技术咨询与选型报价 CTA 区 */
    .cta-box {
      background: linear-gradient(135deg, #0D5C3A 0%, #073B25 100%);
      border-radius: 12px;
      padding: 48px;
      color: #FFF;
      box-shadow: var(--shadow-lg);
    }

    .cta-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }

    .cta-left h2 {
      font-size: 2.1rem;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .cta-left p {
      font-size: 1rem;
      color: #D1D5DB;
      line-height: 1.75;
      margin-bottom: 24px;
    }

    .cta-checklist {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .cta-checklist li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.92rem;
      color: #E2E8F0;
    }

    .cta-checklist .check-icon {
      width: 20px;
      height: 20px;
      background-color: var(--primary-light);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 900;
      flex-shrink: 0;
    }

    .cta-form-card {
      background-color: #FFF;
      border-radius: 8px;
      padding: 32px 28px;
      color: var(--text-main);
      box-shadow: var(--shadow-md);
    }

    .cta-form-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .cta-form-sub {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-label {
      display: block;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text-body);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      height: 42px;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      padding: 0 12px;
      font-size: 0.9rem;
      color: var(--text-main);
      background-color: #F8FAFC;
      transition: var(--transition);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background-color: #FFF;
      box-shadow: 0 0 0 3px rgba(13, 92, 58, 0.12);
    }

    .form-btn {
      width: 100%;
      height: 44px;
      background-color: var(--accent-warning);
      color: #FFF;
      border: none;
      border-radius: 6px;
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      margin-top: 8px;
    }

    .form-btn:hover {
      background-color: #D68910;
      transform: translateY(-2px);
    }

    /* Footer Section */
    .site-footer {
      background-color: #111827;
      color: #94A3B8;
      padding: 60px 0 24px 0;
      font-size: 0.9rem;
      border-top: 1px solid #1F2937;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 0.9fr 1.1fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-brand h3 {
      font-size: 1.3rem;
      font-weight: 800;
      color: #FFF;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 0.86rem;
      line-height: 1.8;
      color: #94A3B8;
      margin-bottom: 20px;
    }

    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: #F1F5F9;
      margin-bottom: 18px;
      position: relative;
      padding-bottom: 8px;
    }

    .footer-col h4::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background-color: var(--primary-light);
    }

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

    .footer-links a {
      color: #94A3B8;
      font-size: 0.86rem;
    }

    .footer-links a:hover {
      color: #FFF;
      padding-left: 4px;
    }

    .footer-contact-item {
      display: flex;
      gap: 10px;
      font-size: 0.86rem;
      line-height: 1.6;
      margin-bottom: 12px;
    }

    .footer-contact-item strong {
      color: #E2E8F0;
      min-width: 60px;
    }

    .footer-bottom {
      border-top: 1px solid #1F2937;
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-size: 0.82rem;
      color: #64748B;
    }

    .footer-legal-links {
      display: flex;
      gap: 20px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .overview-layout, .dark-grid, .cta-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .pain-grid, .step-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-timeline::before {
        display: none;
      }
      .advantage-grid, .products-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .story-layout {
        grid-template-columns: 1fr;
      }
      .story-image-wrap {
        min-height: 260px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 767px) {
      .top-bar {
        display: none;
      }
      .site-header {
        padding: 0;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background-color: #FFF;
        flex-direction: column;
        padding: 24px;
        gap: 18px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        display: none;
      }
      .nav-menu.open {
        display: flex;
      }
      .mobile-toggle {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      .hero-h1 {
        font-size: 2rem;
      }
      .hero-specs-row {
        grid-template-columns: 1fr;
        gap: 12px;
      }
      .pain-grid, .advantage-grid, .products-grid, .step-timeline, .testimonials-grid, .news-grid, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .metric-card {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        padding-bottom: 16px;
      }
      .metric-card:last-child {
        border-bottom: none;
      }
      .cta-box {
        padding: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }