/* roulang page: index */
:root {
      --color-primary: #1E2229;
      --color-primary-dark: #0F1115;
      --color-accent: #E85A19;
      --color-accent-hover: #D44E0F;
      --color-signal-green: #10B981;
      --color-bg-light: #F8F9FA;
      --color-bg-white: #FFFFFF;
      --color-bg-dark: #16191F;
      --color-text-main: #1F2937;
      --color-text-muted: #64748B;
      --color-text-dark-sub: #94A3B8;
      --color-border: #E2E8F0;
      --color-border-dark: #2A2E39;
      --radius-sm: 4px;
      --radius-md: 6px;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
      --font-mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
      --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-sans);
      color: var(--color-text-main);
      background-color: var(--color-bg-light);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, opacity 0.2s ease;
    }

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部双行导航 */
    .utility-bar {
      background-color: var(--color-primary-dark);
      color: #94A3B8;
      font-size: 12px;
      border-bottom: 1px solid var(--color-border-dark);
      padding: 6px 0;
    }
    .utility-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .utility-left {
      display: flex;
      gap: 20px;
      align-items: center;
      font-family: var(--font-mono);
    }
    .status-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--color-signal-green);
      margin-right: 6px;
      box-shadow: 0 0 6px var(--color-signal-green);
    }
    .utility-right {
      display: flex;
      gap: 16px;
    }

    .main-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background-color: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--color-border);
      transition: all 0.3s ease;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 800;
      color: var(--color-primary);
      letter-spacing: -0.5px;
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      background-color: var(--color-primary);
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-size: 18px;
      font-weight: 900;
      border-left: 3px solid var(--color-accent);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-item a {
      font-size: 15px;
      font-weight: 500;
      color: var(--color-primary);
      padding: 8px 0;
      position: relative;
    }
    .nav-item a:hover {
      color: var(--color-accent);
    }
    .nav-item a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--color-accent);
      transition: width 0.2s ease;
    }
    .nav-item a:hover::after {
      width: 100%;
    }
    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      background-color: var(--color-accent);
      color: #FFF;
      border: 1px solid var(--color-accent);
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .nav-cta-btn:hover {
      background-color: var(--color-accent-hover);
      transform: translateY(-1px);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--color-primary);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 通用板块样式与标题 */
    section {
      padding: 80px 0;
      position: relative;
    }
    .section-light {
      background-color: var(--color-bg-white);
    }
    .section-alt {
      background-color: var(--color-bg-light);
    }
    .section-dark {
      background-color: var(--color-bg-dark);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--color-accent);
      margin-bottom: 8px;
      font-family: var(--font-mono);
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.25;
      color: inherit;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--color-text-muted);
      max-width: 820px;
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: var(--color-text-dark-sub);
    }

    /* 板块一：Hero */
    .hero-section {
      padding: 70px 0 90px;
      background: linear-gradient(135deg, #0F1115 0%, #1A1E26 100%);
      color: #FFF;
      position: relative;
      border-bottom: 1px solid var(--color-border-dark);
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      background-image: url('/assets/images/86877cebf97aee94.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.12;
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-badge-strip {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background-color: rgba(232, 90, 25, 0.12);
      border: 1px solid rgba(232, 90, 25, 0.35);
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      margin-bottom: 24px;
    }
    .hero-badge-tag {
      background-color: var(--color-accent);
      color: #FFF;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 6px;
      border-radius: 2px;
      text-transform: uppercase;
      font-family: var(--font-mono);
    }
    .hero-badge-text {
      font-size: 13px;
      color: #F1F5F9;
      font-family: var(--font-mono);
    }
    .hero-title {
      font-size: 46px;
      font-weight: 900;
      line-height: 1.18;
      letter-spacing: -1px;
      margin-bottom: 20px;
      color: #FFFFFF;
    }
    .hero-title-highlight {
      color: var(--color-accent);
    }
    .hero-lead {
      font-size: 16px;
      color: #CBD5E1;
      line-height: 1.75;
      margin-bottom: 32px;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 700;
      background-color: var(--color-accent);
      color: #FFF;
      border-radius: var(--radius-sm);
      border: 1px solid var(--color-accent);
      box-shadow: 0 4px 14px rgba(232, 90, 25, 0.3);
      transition: all 0.2s ease;
    }
    .btn-primary:hover {
      background-color: var(--color-accent-hover);
      transform: translateY(-2px);
    }
    .btn-outline-light {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 600;
      background-color: rgba(255, 255, 255, 0.05);
      color: #FFF;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      transition: all 0.2s ease;
    }
    .btn-outline-light:hover {
      background-color: rgba(255, 255, 255, 0.12);
      border-color: #FFF;
    }
    .hero-protocol-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 12px;
      font-family: var(--font-mono);
      color: #94A3B8;
    }
    .protocol-chip {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--color-border-dark);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
    }
    .hero-voucher-card {
      background-color: #1A1F29;
      border: 1px solid #333947;
      border-radius: var(--radius-md);
      padding: 30px;
      position: relative;
      box-shadow: var(--shadow-lg);
    }
    .voucher-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px dashed #3A4150;
      padding-bottom: 20px;
      margin-bottom: 20px;
    }
    .voucher-title {
      font-size: 18px;
      font-weight: 700;
      color: #FFF;
    }
    .voucher-tag {
      background: rgba(16, 185, 129, 0.15);
      color: var(--color-signal-green);
      border: 1px solid var(--color-signal-green);
      font-size: 12px;
      font-family: var(--font-mono);
      padding: 3px 8px;
      border-radius: var(--radius-sm);
    }
    .voucher-main {
      margin-bottom: 24px;
    }
    .voucher-kpi-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 20px;
    }
    .voucher-kpi-box {
      background: rgba(0, 0, 0, 0.25);
      border: 1px solid #2B3240;
      padding: 14px;
      border-radius: var(--radius-sm);
    }
    .voucher-kpi-label {
      font-size: 12px;
      color: #94A3B8;
      margin-bottom: 4px;
    }
    .voucher-kpi-val {
      font-size: 24px;
      font-weight: 800;
      font-family: var(--font-mono);
      color: #F8FAFC;
    }
    .voucher-kpi-val span {
      font-size: 14px;
      color: var(--color-accent);
      font-weight: normal;
    }
    .voucher-subtext {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块二：分类入口 */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .category-card {
      background: var(--color-bg-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .category-card:hover {
      border-color: var(--color-accent);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .category-code {
      font-family: var(--font-mono);
      font-size: 12px;
      color: var(--color-accent);
      font-weight: 700;
      margin-bottom: 12px;
    }
    .category-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--color-primary);
    }
    .category-card p {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }
    .category-link {
      font-size: 13px;
      font-weight: 700;
      color: var(--color-primary);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .category-card:hover .category-link {
      color: var(--color-accent);
    }

    /* 板块三：精选推荐 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .product-card {
      background: var(--color-bg-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.25s ease;
    }
    .product-card:hover {
      border-color: var(--color-accent);
      transform: translateY(-3px);
      box-shadow: var(--shadow-lg);
    }
    .product-img-wrap {
      height: 220px;
      overflow: hidden;
      position: relative;
      background-color: #E2E8F0;
    }
    .product-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .product-card:hover .product-img-wrap img {
      transform: scale(1.05);
    }
    .product-pill {
      position: absolute;
      top: 14px;
      left: 14px;
      background-color: var(--color-primary-dark);
      color: #FFF;
      font-size: 11px;
      font-family: var(--font-mono);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }
    .product-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-title {
      font-size: 20px;
      font-weight: 800;
      color: var(--color-primary);
      margin-bottom: 8px;
    }
    .product-desc {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .spec-table {
      width: 100%;
      font-size: 13px;
      border-collapse: collapse;
      margin-bottom: 20px;
      font-family: var(--font-mono);
    }
    .spec-table tr {
      border-bottom: 1px solid #EDF2F7;
    }
    .spec-table td {
      padding: 8px 0;
    }
    .spec-label {
      color: var(--color-text-muted);
      width: 45%;
    }
    .spec-val {
      color: var(--color-primary);
      font-weight: 600;
      text-align: right;
    }
    .product-action {
      margin-top: auto;
    }
    .btn-block-action {
      display: block;
      width: 100%;
      text-align: center;
      padding: 10px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      background-color: var(--color-bg-light);
      border: 1px solid var(--color-border);
      color: var(--color-primary);
      transition: all 0.2s ease;
    }
    .btn-block-action:hover {
      background-color: var(--color-accent);
      color: #FFF;
      border-color: var(--color-accent);
    }

    /* 板块四：产业痛点剖析 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pain-card {
      background-color: var(--color-bg-white);
      border: 1px solid var(--color-border);
      border-top: 4px solid #EF4444;
      border-radius: var(--radius-sm);
      padding: 28px;
      position: relative;
    }
    .pain-num {
      font-size: 28px;
      font-weight: 900;
      font-family: var(--font-mono);
      color: #EF4444;
      margin-bottom: 12px;
    }
    .pain-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--color-primary);
    }
    .pain-card p {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
    }
    .pain-solution-tag {
      font-size: 12px;
      font-family: var(--font-mono);
      color: var(--color-accent);
      background: #FFF7ED;
      border: 1px solid #FFEDD5;
      padding: 4px 8px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    /* 板块五：底层硬件架构方案 */
    .solution-overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .solution-content h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--color-primary);
    }
    .solution-content p {
      font-size: 15px;
      color: var(--color-text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .solution-params-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 28px;
    }
    .param-item {
      background: var(--color-bg-light);
      border: 1px solid var(--color-border);
      padding: 14px;
      border-radius: var(--radius-sm);
    }
    .param-label {
      font-size: 12px;
      color: var(--color-text-muted);
      margin-bottom: 4px;
    }
    .param-val {
      font-size: 16px;
      font-weight: 700;
      color: var(--color-primary);
      font-family: var(--font-mono);
    }
    .solution-visual {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .solution-visual img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    /* 板块六：标准化作业流程 */
    .workflow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      background: var(--color-bg-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-number {
      font-size: 32px;
      font-weight: 900;
      font-family: var(--font-mono);
      color: var(--color-accent);
      margin-bottom: 14px;
      line-height: 1;
    }
    .step-card h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--color-primary);
    }
    .step-card p {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.6;
    }

    /* 板块七：核心优势矩阵 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: var(--color-bg-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.25s ease;
    }
    .adv-card:hover {
      border-color: var(--color-accent);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .adv-index {
      font-family: var(--font-mono);
      font-size: 12px;
      font-weight: 700;
      color: var(--color-accent);
      margin-bottom: 12px;
    }
    .adv-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--color-primary);
    }
    .adv-card p {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.65;
    }

    /* 板块八：深色工业案例与工程区 */
    .dark-code-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .terminal-box {
      background: #0B0D11;
      border: 1px solid var(--color-border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      font-family: var(--font-mono);
    }
    .terminal-top {
      background: #1F2430;
      padding: 10px 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--color-border-dark);
      font-size: 12px;
      color: #94A3B8;
    }
    .terminal-dots {
      display: flex;
      gap: 6px;
    }
    .t-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #333C4E;
    }
    .t-dot-red { background: #EF4444; }
    .t-dot-yellow { background: #F59E0B; }
    .t-dot-green { background: #10B981; }
    .terminal-body {
      padding: 20px;
      font-size: 13px;
      line-height: 1.8;
      color: #E2E8F0;
    }
    .terminal-log-green { color: var(--color-signal-green); }
    .terminal-log-orange { color: var(--color-accent); }
    .terminal-log-cyan { color: #38BDF8; }

    /* 板块九：全网关键技术数据统计条 */
    .metrics-strip {
      background: #11141A;
      border-top: 1px solid var(--color-border-dark);
      border-bottom: 1px solid var(--color-border-dark);
      padding: 44px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
    }
    .metric-item {
      text-align: center;
      border-right: 1px solid var(--color-border-dark);
      padding: 0 16px;
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-number {
      font-size: 40px;
      font-weight: 900;
      font-family: var(--font-mono);
      color: #FFFFFF;
      margin-bottom: 6px;
      letter-spacing: -0.5px;
    }
    .metric-number span {
      color: var(--color-accent);
      font-size: 24px;
    }
    .metric-title {
      font-size: 14px;
      color: #94A3B8;
      font-weight: 500;
    }

    /* 板块十：前沿技术资讯与协议更新 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--color-bg-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.25s ease;
    }
    .news-card:hover {
      border-color: var(--color-accent);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .news-img {
      height: 190px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .news-card:hover .news-img img {
      transform: scale(1.04);
    }
    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      font-family: var(--font-mono);
      color: var(--color-text-muted);
      margin-bottom: 12px;
    }
    .news-meta span:first-child {
      color: var(--color-accent);
      font-weight: 600;
    }
    .news-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-card p {
      font-size: 13px;
      color: var(--color-text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .news-anchor {
      margin-top: auto;
      font-size: 13px;
      font-weight: 700;
      color: var(--color-primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .news-anchor:hover {
      color: var(--color-accent);
    }

    /* 板块十一：适用人群与业务场景 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .scenario-card {
      background: var(--color-bg-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 24px;
      border-bottom: 3px solid transparent;
      transition: all 0.25s ease;
    }
    .scenario-card:hover {
      border-bottom-color: var(--color-accent);
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }
    .scenario-badge {
      font-family: var(--font-mono);
      font-size: 11px;
      font-weight: 700;
      color: var(--color-primary);
      background: #E2E8F0;
      display: inline-block;
      padding: 3px 8px;
      border-radius: 2px;
      margin-bottom: 14px;
    }
    .scenario-card h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--color-primary);
    }
    .scenario-card p {
      font-size: 13px;
      color: var(--color-text-muted);
      line-height: 1.65;
    }

    /* 板块十二：真实工程师实操案例 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .case-card {
      background: var(--color-bg-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
    }
    .case-img-side {
      height: 100%;
      min-height: 240px;
    }
    .case-img-side img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content-side {
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-tag {
      font-size: 11px;
      font-family: var(--font-mono);
      color: var(--color-accent);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .case-content-side h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--color-primary);
    }
    .case-content-side p {
      font-size: 13px;
      color: var(--color-text-muted);
      line-height: 1.65;
      margin-bottom: 14px;
    }
    .case-stat {
      font-size: 12px;
      color: var(--color-primary);
      font-weight: 700;
      font-family: var(--font-mono);
      background: var(--color-bg-light);
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    /* 板块十三：技术疑难问答 */
    .faq-wrapper {
      max-width: 920px;
      margin: 0 auto;
    }
    .faq-item {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      background: var(--color-bg-white);
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--color-primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-icon {
      font-size: 18px;
      font-family: var(--font-mono);
      color: var(--color-accent);
      transition: transform 0.2s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 板块十四：转化与留资 */
    .cta-container {
      background: linear-gradient(135deg, #16191F 0%, #0F1115 100%);
      border: 1px solid var(--color-border-dark);
      border-radius: var(--radius-md);
      padding: 48px;
      color: #FFF;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
    }
    .cta-text h2 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.25;
    }
    .cta-text p {
      font-size: 15px;
      color: #94A3B8;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-highlights {
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 13px;
      color: #CBD5E1;
    }
    .cta-hl-item {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .cta-hl-dot {
      width: 6px;
      height: 6px;
      background-color: var(--color-accent);
      border-radius: 50%;
    }
    .cta-form {
      background: #1F2430;
      border: 1px solid #333C4E;
      padding: 28px;
      border-radius: var(--radius-sm);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 12px;
      font-weight: 600;
      color: #CBD5E1;
      margin-bottom: 6px;
    }
    .form-input, .form-select {
      width: 100%;
      padding: 12px 14px;
      background: #0B0D11;
      border: 1px solid #333C4E;
      color: #FFF;
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
    }
    .form-input:focus, .form-select:focus {
      border-color: var(--color-accent);
    }
    .btn-form-submit {
      width: 100%;
      padding: 14px;
      font-size: 15px;
      font-weight: 700;
      background-color: var(--color-accent);
      color: #FFF;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: background 0.2s ease;
      margin-top: 8px;
    }
    .btn-form-submit:hover {
      background-color: var(--color-accent-hover);
    }

    /* 双引擎页脚 */
    .site-footer {
      background-color: var(--color-primary-dark);
      color: #94A3B8;
      border-top: 1px solid var(--color-border-dark);
      padding: 60px 0 24px;
      font-size: 13px;
    }
    .footer-main-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      color: #FFF;
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.7;
      color: #64748B;
      margin-bottom: 16px;
    }
    .footer-col h5 {
      color: #FFF;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 16px;
      text-transform: uppercase;
      font-family: var(--font-mono);
    }
    .footer-nav {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-nav a:hover {
      color: var(--color-accent);
    }
    .footer-contact-info {
      display: flex;
      flex-direction: column;
      gap: 10px;
      line-height: 1.6;
    }
    .footer-bottom-bar {
      border-top: 1px solid var(--color-border-dark);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .solution-overview-grid {
        grid-template-columns: 1fr;
      }
      .category-grid, .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .products-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .advantage-grid, .pain-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 30px;
      }
      .metric-item {
        border-right: none;
      }
      .cta-container {
        grid-template-columns: 1fr;
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .footer-main-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .utility-bar {
        display: none;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        display: none;
      }
      .nav-menu.active {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .category-grid, .scenario-grid, .products-grid, .news-grid, .workflow-steps-grid, .advantage-grid, .pain-grid {
        grid-template-columns: 1fr;
      }
      .case-card {
        grid-template-columns: 1fr;
      }
      .footer-main-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom-bar {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .hero-title {
        font-size: 32px;
      }
      .cta-container {
        padding: 24px;
      }
    }