/* roulang page: index */
:root {
      --primary: #0F172A;
      --accent: #0284C7;
      --accent-hover: #0369A1;
      --action: #F97316;
      --action-hover: #EA580C;
      --bg-base: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-subtle: #F1F5F9;
      --bg-dark: #0B0F19;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --border-dark: #1E293B;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-pill: 9999px;
      --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.05), 0 1px 2px -1px rgb(0 0 0 / 0.05);
      --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.07), 0 4px 6px -4px rgb(0 0 0 / 0.05);
      --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.04);
      --font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      --max-width: 1240px;
      --transition: all 0.3s 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: var(--font-family);
      background-color: var(--bg-base);
      color: var(--text-body);
      line-height: 1.75;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button, input, textarea, select {
      font: inherit;
    }

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 2rem;
      padding-right: 2rem;
    }

    @media (max-width: 768px) {
      .container {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
      }
    }

    /* 顶部元信息栏 */
    .top-bar {
      background-color: #0B1120;
      color: #94A3B8;
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding: 0.5rem 0;
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }

    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 1.5rem;
    }

    .top-bar a:hover {
      color: #F8FAFC;
    }

    /* 主吸顶导航 */
    .main-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .header-nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .nav-brand {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.01em;
    }

    .brand-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--accent) 0%, #0F172A 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 800;
      font-size: 1.1rem;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 1.75rem;
      list-style: none;
    }

    .nav-item a {
      font-size: 0.9375rem;
      font-weight: 500;
      color: #475569;
      position: relative;
      padding: 0.5rem 0;
    }

    .nav-item a:hover,
    .nav-item a.active {
      color: var(--accent);
    }

    .nav-item a.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--accent);
      border-radius: 2px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      cursor: pointer;
      border: 1px solid transparent;
      padding: 0.625rem 1.25rem;
      font-size: 0.9375rem;
      white-space: nowrap;
    }

    .btn-action {
      background-color: var(--action);
      color: #FFFFFF;
      box-shadow: 0 4px 14px 0 rgba(249, 115, 22, 0.35);
    }

    .btn-action:hover {
      background-color: var(--action-hover);
      box-shadow: 0 6px 20px 0 rgba(249, 115, 22, 0.45);
      transform: translateY(-1px);
    }

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

    .btn-accent:hover {
      background-color: var(--accent-hover);
      transform: translateY(-1px);
    }

    .btn-outline {
      background-color: transparent;
      border-color: var(--border-color);
      color: var(--primary);
    }

    .btn-outline:hover {
      border-color: var(--accent);
      color: var(--accent);
      background-color: rgba(2, 132, 199, 0.05);
    }

    .btn-dark {
      background-color: #1E293B;
      color: #FFFFFF;
      border: 1px solid #334155;
    }

    .btn-dark:hover {
      background-color: #334155;
      color: #FFFFFF;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      padding: 0.25rem 0.75rem;
      border-radius: var(--radius-pill);
      font-size: 0.8125rem;
      font-weight: 600;
      letter-spacing: 0.02em;
    }

    .badge-primary {
      background-color: rgba(2, 132, 199, 0.1);
      color: var(--accent);
      border: 1px solid rgba(2, 132, 199, 0.2);
    }

    .badge-action {
      background-color: rgba(249, 115, 22, 0.1);
      color: var(--action);
      border: 1px solid rgba(249, 115, 22, 0.2);
    }

    .section-spacing {
      padding: 5.5rem 0;
    }

    .section-header {
      margin-bottom: 3.5rem;
      text-align: center;
    }

    .section-header.text-left {
      text-align: left;
    }

    .section-title {
      font-size: clamp(1.75rem, 3.2vw, 2.375rem);
      line-height: 1.3;
      color: var(--primary);
      margin-top: 0.75rem;
      margin-bottom: 1rem;
      font-weight: 700;
      letter-spacing: -0.01em;
    }

    .section-lead {
      font-size: 1.0625rem;
      color: var(--text-muted);
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.7;
    }

    .section-header.text-left .section-lead {
      margin-left: 0;
    }

    /* 板块 1：Hero 区 */
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, #F8FAFC 0%, #EDF2F7 100%);
      padding: 5rem 0 4.5rem;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3.5rem;
      align-items: center;
    }

    .hero-content h1 {
      font-size: clamp(2.25rem, 4.5vw, 3.25rem);
      line-height: 1.25;
      color: var(--primary);
      margin-bottom: 1.5rem;
      letter-spacing: -0.02em;
      font-weight: 800;
    }

    .hero-desc {
      font-size: 1.125rem;
      color: var(--text-body);
      margin-bottom: 2rem;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      margin-bottom: 2.5rem;
    }

    .hero-meta-points {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1.75rem;
    }

    .meta-point-item strong {
      display: block;
      font-size: 1.5rem;
      color: var(--primary);
      font-weight: 700;
    }

    .meta-point-item span {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    .hero-visual-card {
      background: #0B0F19;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
      overflow: hidden;
      position: relative;
    }

    .console-header {
      background: #151D2C;
      padding: 0.75rem 1rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .console-dots {
      display: flex;
      gap: 6px;
    }

    .console-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #334155;
    }

    .console-dot:nth-child(1) { background: #EF4444; }
    .console-dot:nth-child(2) { background: #F59E0B; }
    .console-dot:nth-child(3) { background: #10B981; }

    .console-title {
      font-size: 0.75rem;
      color: #94A3B8;
      font-family: monospace;
    }

    .console-body {
      padding: 1.25rem;
    }

    .console-screen-img {
      width: 100%;
      height: 260px;
      object-fit: cover;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 1rem;
    }

    .console-metrics-row {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 0.75rem;
    }

    .console-metric-chip {
      background: #131A29;
      padding: 0.75rem;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.04);
    }

    .chip-label {
      font-size: 0.75rem;
      color: #64748B;
      display: block;
    }

    .chip-value {
      font-size: 1.125rem;
      color: #38BDF8;
      font-weight: 700;
    }

    /* 客户机构背书行 */
    .hero-partner-bar {
      margin-top: 3.5rem;
      padding-top: 2rem;
      border-top: 1px solid rgba(0, 0, 0, 0.06);
    }

    .partner-bar-title {
      font-size: 0.8125rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--text-muted);
      margin-bottom: 1.25rem;
      text-align: center;
    }

    .partner-logo-grid {
      display: flex;
      justify-content: space-around;
      align-items: center;
      flex-wrap: wrap;
      gap: 2rem;
      opacity: 0.75;
    }

    .partner-badge {
      font-weight: 700;
      color: #475569;
      font-size: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    /* 板块 2：研发标准与工程矩阵 */
    .bg-subtle-section {
      background-color: var(--bg-subtle);
    }

    .grid-2col {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }

    .dev-cert-cards {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.25rem;
      margin-top: 2rem;
    }

    .dev-cert-card {
      background: var(--bg-card);
      padding: 1.25rem;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .cert-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent);
      background: rgba(2, 132, 199, 0.08);
      padding: 0.2rem 0.5rem;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 0.5rem;
    }

    .dev-steps {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }

    .dev-step-card {
      background: var(--bg-card);
      padding: 1.5rem;
      border-radius: var(--radius-md);
      border-left: 4px solid var(--accent);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .dev-step-card:hover {
      transform: translateX(4px);
      box-shadow: var(--shadow-md);
    }

    .dev-step-card h3 {
      font-size: 1.125rem;
      color: var(--primary);
      margin-bottom: 0.5rem;
    }

    /* 板块 3：核心技术优势网格 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .matrix-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      transition: var(--transition);
      position: relative;
    }

    .matrix-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }

    .matrix-icon-wrap {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(2, 132, 199, 0.08);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      margin-bottom: 1.25rem;
    }

    .matrix-code-badge {
      position: absolute;
      top: 1.5rem;
      right: 1.5rem;
      font-size: 0.75rem;
      font-family: monospace;
      color: var(--text-muted);
      background: var(--bg-subtle);
      padding: 0.2rem 0.5rem;
      border-radius: 4px;
    }

    .matrix-card h3 {
      font-size: 1.2rem;
      color: var(--primary);
      margin-bottom: 0.75rem;
    }

    .matrix-card p {
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.65;
    }

    /* 板块 4：平台模块与解决方案集成 */
    .platform-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }

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

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

    .platform-card-img {
      width: 100%;
      height: 190px;
      object-fit: cover;
    }

    .platform-card-body {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .platform-card-body h3 {
      font-size: 1.25rem;
      color: var(--primary);
      margin-bottom: 0.75rem;
    }

    .platform-card-body p {
      font-size: 0.9375rem;
      color: var(--text-body);
      margin-bottom: 1.25rem;
      line-height: 1.65;
    }

    .feature-check-list {
      list-style: none;
      margin-bottom: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 0.6rem;
    }

    .feature-check-list li {
      font-size: 0.875rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .check-icon {
      color: #10B981;
      font-weight: 700;
    }

    /* 板块 5：行业应用场景与功能编排 */
    .scenario-container {
      display: grid;
      grid-template-columns: 0.35fr 0.65fr;
      gap: 2rem;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      box-shadow: var(--shadow-md);
    }

    .scenario-tabs {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }

    .tab-btn {
      padding: 1.1rem 1.25rem;
      text-align: left;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: var(--bg-subtle);
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      transition: var(--transition);
    }

    .tab-btn:hover, .tab-btn.active {
      background: var(--accent);
      color: #FFFFFF;
      border-color: var(--accent);
    }

    .scenario-panel {
      display: none;
      flex-direction: column;
      gap: 1.5rem;
    }

    .scenario-panel.active {
      display: flex;
    }

    .scenario-img {
      width: 100%;
      height: 240px;
      object-fit: cover;
      border-radius: var(--radius-md);
    }

    .scenario-metrics {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1rem;
    }

    .scenario-metric-box {
      background: var(--bg-subtle);
      padding: 1rem;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--action);
    }

    .metric-num {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
    }

    .metric-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 板块 6：深色极客风核心技术架构与引擎 */
    .engine-section {
      background-color: var(--bg-dark);
      color: #F8FAFC;
      position: relative;
    }

    .engine-section .section-title {
      color: #F8FAFC;
    }

    .engine-section .section-lead {
      color: #94A3B8;
    }

    .arch-stack {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
      max-width: 960px;
      margin: 0 auto;
    }

    .arch-layer {
      background: #131A29;
      border: 1px solid #1E293B;
      border-radius: var(--radius-md);
      padding: 1.75rem;
      position: relative;
      transition: var(--transition);
    }

    .arch-layer:hover {
      border-color: var(--accent);
      box-shadow: 0 0 25px rgba(2, 132, 199, 0.2);
    }

    .layer-tag {
      font-size: 0.75rem;
      font-family: monospace;
      color: var(--accent);
      text-transform: uppercase;
      margin-bottom: 0.5rem;
      display: block;
      font-weight: 700;
    }

    .layer-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: #F1F5F9;
    }

    .layer-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1rem;
      margin-top: 1rem;
    }

    .layer-module {
      background: #0B0F19;
      border: 1px solid #243048;
      border-radius: var(--radius-sm);
      padding: 0.75rem;
      font-size: 0.875rem;
      text-align: center;
      color: #CBD5E1;
    }

    /* 板块 7：标杆案例与落地复盘 */
    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
      box-shadow: var(--shadow-sm);
    }

    .case-img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      border-radius: var(--radius-md);
    }

    .case-content h3 {
      font-size: 1.625rem;
      color: var(--primary);
      margin-bottom: 1rem;
    }

    .case-content p {
      font-size: 1rem;
      color: var(--text-body);
      margin-bottom: 1.5rem;
      line-height: 1.7;
    }

    .case-stats {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.25rem;
      margin-bottom: 1.5rem;
    }

    .case-stat-item {
      border-left: 3px solid var(--accent);
      padding-left: 0.75rem;
    }

    .stat-val {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary);
    }

    .stat-name {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 板块 8：关键数据指标与技术吞吐统计条 */
    .metrics-bar-section {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      color: #FFFFFF;
      padding: 4rem 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .metrics-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }

    .metric-strip-item {
      padding: 1rem;
      position: relative;
    }

    .metric-strip-item:not(:last-child)::after {
      content: "";
      position: absolute;
      right: 0;
      top: 20%;
      height: 60%;
      width: 1px;
      background: rgba(255, 255, 255, 0.12);
    }

    .metric-strip-num {
      font-size: clamp(2rem, 3.5vw, 2.75rem);
      font-weight: 800;
      color: #38BDF8;
      font-family: monospace;
      line-height: 1.1;
      margin-bottom: 0.5rem;
    }

    .metric-strip-label {
      font-size: 0.9375rem;
      color: #CBD5E1;
      font-weight: 500;
    }

    /* 板块 9：部署模式与投入方案 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      align-items: stretch;
    }

    .pricing-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.5rem 2rem;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }

    .pricing-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }

    .pricing-card.featured {
      border: 2px solid var(--action);
      box-shadow: 0 15px 30px -10px rgba(249, 115, 22, 0.2);
    }

    .pricing-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--action);
      color: #FFFFFF;
      padding: 0.3rem 1rem;
      border-radius: var(--radius-pill);
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.05em;
    }

    .pricing-card h3 {
      font-size: 1.35rem;
      color: var(--primary);
      margin-bottom: 0.5rem;
    }

    .pricing-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      min-height: 48px;
    }

    .pricing-features {
      list-style: none;
      margin-bottom: 2rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
    }

    .pricing-features li {
      font-size: 0.9rem;
      color: var(--text-body);
      display: flex;
      align-items: flex-start;
      gap: 0.5rem;
    }

    /* 板块 10：真实使用评价与用户口碑 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }

    .testimonial-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .testimonial-card:hover {
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }

    .testimonial-stars {
      color: #F59E0B;
      font-size: 1rem;
      margin-bottom: 1rem;
      letter-spacing: 2px;
    }

    .testimonial-quote {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 1.5rem;
      font-style: normal;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1rem;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--accent);
    }

    .author-info strong {
      display: block;
      font-size: 0.9rem;
      color: var(--primary);
    }

    .author-info span {
      font-size: 0.775rem;
      color: var(--text-muted);
    }

    /* 板块 11：行业资讯洞察与软件开发知识库 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }

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

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

    .article-thumb {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }

    .article-body {
      padding: 1.25rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .article-tag {
      font-size: 0.75rem;
      color: var(--accent);
      font-weight: 600;
      margin-bottom: 0.5rem;
      display: inline-block;
    }

    .article-body h3 {
      font-size: 1.05rem;
      color: var(--primary);
      margin-bottom: 0.75rem;
      line-height: 1.4;
    }

    .article-body p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 1rem;
    }

    .article-read-btn {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--accent);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }

    /* 板块 12：常见技术开发与交付 FAQ */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: #CBD5E1;
    }

    .faq-question {
      padding: 1.25rem 1.5rem;
      width: 100%;
      background: none;
      border: none;
      text-align: left;
      font-size: 1.0625rem;
      font-weight: 600;
      color: var(--primary);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      gap: 1rem;
    }

    .faq-indicator {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--bg-subtle);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      color: var(--text-muted);
      flex-shrink: 0;
      transition: var(--transition);
    }

    .faq-answer {
      padding: 0 1.5rem 1.25rem;
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.7;
      display: none;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .faq-item.active .faq-indicator {
      transform: rotate(45deg);
      background: var(--accent);
      color: #FFFFFF;
    }

    /* 底部收口转化表单区 */
    .contact-cta-section {
      background: #0B0F19;
      padding: 5.5rem 0;
      color: #FFFFFF;
    }

    .contact-cta-card {
      background: linear-gradient(145deg, #151D2C 0%, #0F172A 100%);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 3.5rem 3rem;
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 3.5rem;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }

    .contact-info h2 {
      font-size: clamp(1.75rem, 3vw, 2.25rem);
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 1rem;
      line-height: 1.3;
    }

    .contact-info p {
      font-size: 1rem;
      color: #94A3B8;
      line-height: 1.7;
      margin-bottom: 2rem;
    }

    .contact-channel-list {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
      list-style: none;
    }

    .contact-channel-item {
      display: flex;
      align-items: center;
      gap: 1rem;
    }

    .contact-channel-icon {
      width: 40px;
      height: 40px;
      border-radius: 8px;
      background: rgba(2, 132, 199, 0.15);
      color: #38BDF8;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
    }

    .contact-channel-val {
      font-size: 1.05rem;
      font-weight: 600;
      color: #F8FAFC;
    }

    .contact-form {
      background: rgba(11, 15, 25, 0.6);
      padding: 2.25rem;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .form-group {
      margin-bottom: 1.25rem;
    }

    .form-group label {
      display: block;
      font-size: 0.85rem;
      color: #CBD5E1;
      margin-bottom: 0.5rem;
      font-weight: 500;
    }

    .form-control {
      width: 100%;
      background: #1A2333;
      border: 1px solid #334155;
      border-radius: var(--radius-sm);
      padding: 0.75rem 1rem;
      color: #FFFFFF;
      outline: none;
      transition: var(--transition);
      font-size: 0.9375rem;
    }

    .form-control:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.25);
    }

    .form-submit-btn {
      width: 100%;
      padding: 0.85rem;
      font-size: 1rem;
    }

    .form-privacy-note {
      font-size: 0.75rem;
      color: #64748B;
      text-align: center;
      margin-top: 1rem;
      line-height: 1.5;
    }

    /* 全局页脚 Footer */
    .site-footer {
      background-color: #06090F;
      color: #94A3B8;
      padding-top: 4.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }

    .footer-brand-title {
      font-size: 1.25rem;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 1rem;
    }

    .footer-col h4 {
      font-size: 1rem;
      color: #F8FAFC;
      margin-bottom: 1.25rem;
      font-weight: 600;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }

    .footer-col a:hover {
      color: var(--accent);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 1.75rem 0;
      text-align: center;
      font-size: 0.8125rem;
      color: #64748B;
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
    }

    .footer-links-row {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 1.5rem;
    }

    /* 移动端汉堡切换与抽屉 */
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
      flex-direction: column;
      gap: 5px;
    }

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

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid, .grid-2col, .case-card, .contact-cta-card {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }

      .matrix-grid, .platform-cards-grid, .pricing-grid, .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .scenario-container {
        grid-template-columns: 1fr;
      }

      .layer-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem;
      }

      .mobile-menu-toggle {
        display: flex;
      }

      .nav-menu {
        position: fixed;
        top: 76px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 2rem;
        gap: 1.25rem;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-color);
        display: none;
      }

      .nav-menu.open {
        display: flex;
      }

      .header-actions {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .matrix-grid, .platform-cards-grid, .pricing-grid, .testimonial-grid, .articles-grid {
        grid-template-columns: 1fr;
      }

      .metrics-strip {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
      }

      .metric-strip-item:nth-child(2)::after {
        display: none;
      }

      .hero-meta-points {
        grid-template-columns: 1fr;
        gap: 1rem;
      }

      .dev-cert-cards {
        grid-template-columns: 1fr;
      }

      .scenario-metrics {
        grid-template-columns: 1fr;
      }

      .layer-grid {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }

      .top-bar-left, .top-bar-right {
        gap: 0.75rem;
      }

      .btn {
        min-height: 48px;
        width: 100%;
      }

      .hero-actions {
        flex-direction: column;
      }
    }