/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-hover: #0B3E8F;
      --primary-light: #EEF4FC;
      --accent: #00A3C4;
      --accent-soft: #E0F7FA;
      --bg-main: #FFFFFF;
      --bg-alt: #F8FAFC;
      --bg-slate: #0F172A;
      --bg-slate-card: #1E293B;
      --text-dark: #1E293B;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --border-focus: #93C5FD;
      --card-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --card-shadow-hover: 0 20px 25px -5px rgba(15, 82, 186, 0.08), 0 8px 10px -6px rgba(15, 82, 186, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --container-max: 1200px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-dark);
      line-height: 1.65;
      -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: 0 auto;
      padding: 0 24px;
    }

    /* 顶部工具栏 */
    .top-bar {
      background-color: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.8125rem;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #059669;
      font-weight: 500;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
    }

    /* 导航栏 */
    .site-header {
      background-color: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-logo svg {
      width: 32px;
      height: 32px;
      fill: var(--primary);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: var(--primary);
      color: #FFFFFF !important;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9rem;
      min-height: 44px;
    }
    .nav-cta:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.2);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--text-dark);
    }

    /* 板块通用间距 */
    .section-py {
      padding: 90px 0;
    }
    .section-py-alt {
      padding: 90px 0;
      background-color: var(--bg-alt);
    }
    .section-header {
      max-width: 760px;
      margin: 0 auto 56px auto;
      text-align: center;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      background-color: var(--primary-light);
      color: var(--primary);
      font-size: 0.8125rem;
      font-weight: 600;
      border-radius: 30px;
      margin-bottom: 14px;
      letter-spacing: 0.05em;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 2.2rem;
      line-height: 1.3;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.95rem;
      min-height: 46px;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 4px 14px rgba(15, 82, 186, 0.25);
    }
    .btn-outline {
      background-color: #FFFFFF;
      color: var(--text-dark);
      border-color: var(--border-color);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #FFFFFF;
    }
    .btn-accent:hover {
      background-color: #0088A3;
    }

    /* 1. Hero 开发者/API 结构 */
    .hero-section {
      background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
      padding: 70px 0 90px 0;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }
    .hero-content h1 span {
      color: var(--primary);
    }
    .hero-lead {
      font-size: 1.1rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-meta-list {
      display: flex;
      gap: 24px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      font-size: 0.875rem;
      color: var(--text-muted);
    }
    .hero-meta-item strong {
      color: var(--text-dark);
      display: block;
      font-size: 1.1rem;
    }

    /* 代码与数据控制台演示卡片 */
    .console-mockup {
      background-color: var(--bg-slate);
      border-radius: var(--radius-md);
      box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
      border: 1px solid #334155;
      overflow: hidden;
    }
    .console-header {
      background-color: #1E293B;
      padding: 12px 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid #334155;
    }
    .window-dots {
      display: flex;
      gap: 6px;
    }
    .window-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .dot-red { background-color: #EF4444; }
    .dot-yellow { background-color: #F59E0B; }
    .dot-green { background-color: #10B981; }
    .console-tab {
      font-size: 0.75rem;
      color: #94A3B8;
      font-family: monospace;
    }
    .console-body {
      padding: 20px;
      font-family: Consolas, Monaco, "Courier New", monospace;
      font-size: 0.85rem;
      line-height: 1.6;
      color: #E2E8F0;
      overflow-x: auto;
    }
    .code-comment { color: #64748B; }
    .code-key { color: #38BDF8; }
    .code-val { color: #A7F3D0; }
    .code-func { color: #F472B6; }

    /* 2. 卖点三连 */
    .features-triplet {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .feature-point-card {
      background: #FFFFFF;
      padding: 36px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      position: relative;
    }
    .feature-point-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
      border-color: var(--border-focus);
    }
    .icon-box {
      width: 52px;
      height: 52px;
      border-radius: 10px;
      background-color: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary);
    }
    .icon-box svg {
      width: 26px;
      height: 26px;
    }
    .feature-point-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-dark);
    }
    .feature-point-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 3. 行业痛点陈列 */
    .painpoints-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .painpoint-card {
      background: #FFFFFF;
      border: 1px solid #FECACA;
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--card-shadow);
    }
    .painpoint-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #DC2626;
      background-color: #FEF2F2;
      font-size: 0.8rem;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 16px;
    }
    .painpoint-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #991B1B;
    }
    .painpoint-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 4. 入口矩阵 */
    .portal-matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .portal-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: left;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .portal-item:hover {
      border-color: var(--primary);
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-2px);
    }
    .portal-tag {
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--accent);
      margin-bottom: 10px;
      text-transform: uppercase;
    }
    .portal-item h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-dark);
    }
    .portal-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.5;
    }
    .portal-link {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 5. 架构介绍区 */
    .architecture-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 44px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      box-shadow: var(--card-shadow);
    }
    .architecture-text h3 {
      font-size: 1.85rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-dark);
    }
    .architecture-text p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .spec-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .spec-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.9rem;
      color: var(--text-dark);
    }
    .spec-item svg {
      width: 18px;
      height: 18px;
      fill: var(--primary);
      flex-shrink: 0;
      margin-top: 3px;
    }
    .architecture-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }

    /* 6. 核心优势六宫格 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .advantage-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--card-shadow);
      transition: var(--transition);
    }
    .advantage-card:hover {
      border-color: var(--primary);
      box-shadow: var(--card-shadow-hover);
    }
    .advantage-num {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 12px;
      font-family: monospace;
    }
    .advantage-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-dark);
    }
    .advantage-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 7. 最新发布卡片群 */
    .release-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .release-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }
    .release-img-wrap {
      height: 190px;
      overflow: hidden;
      position: relative;
    }
    .release-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .release-card:hover .release-img-wrap img {
      transform: scale(1.04);
    }
    .release-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .release-date {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .release-body h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .release-body p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    /* 8. 热门专题与解决方案 */
    .solutions-triad {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .solution-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
      box-shadow: var(--card-shadow);
    }
    .solution-card.featured {
      border: 2px solid var(--primary);
      box-shadow: 0 12px 28px -4px rgba(15, 82, 186, 0.15);
      transform: scale(1.02);
      z-index: 2;
    }
    .featured-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background-color: var(--primary);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: 20px;
    }
    .solution-card h4 {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-dark);
    }
    .solution-card .solution-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .solution-specs {
      list-style: none;
      margin-bottom: 30px;
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.85rem;
      color: var(--text-dark);
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
    }
    .solution-specs li {
      display: flex;
      justify-content: space-between;
    }
    .solution-specs li span:first-child {
      color: var(--text-muted);
    }

    /* 9. 深色技术底座 */
    .dark-tech-section {
      background-color: var(--bg-slate);
      color: #FFFFFF;
      padding: 90px 0;
    }
    .dark-tech-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .dark-tech-content h3 {
      font-size: 2.1rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: #F8FAFC;
    }
    .dark-tech-content p {
      color: #94A3B8;
      font-size: 1rem;
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .dark-feature-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .dark-feature-item {
      background: var(--bg-slate-card);
      border: 1px solid #334155;
      padding: 16px;
      border-radius: var(--radius-sm);
    }
    .dark-feature-item h5 {
      font-size: 0.95rem;
      color: #38BDF8;
      margin-bottom: 6px;
    }
    .dark-feature-item p {
      font-size: 0.825rem;
      color: #CBD5E1;
      line-height: 1.5;
      margin-bottom: 0;
    }

    /* 10. 用户实践案例 */
    .cases-split-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .case-panel {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }
    .case-panel img {
      width: 100%;
      height: 220px;
      object-fit: cover;
    }
    .case-panel-body {
      padding: 28px;
      flex: 1;
    }
    .case-tag {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .case-panel-body h4 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .case-panel-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .case-metrics-row {
      display: flex;
      gap: 24px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .case-metric-val {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
    }
    .case-metric-label {
      font-size: 0.75rem;
      color: var(--text-light);
    }

    /* 11. 数据指标条 */
    .metrics-bar-section {
      background: linear-gradient(135deg, #0F52BA 0%, #0088A3 100%);
      color: #FFFFFF;
      padding: 60px 0;
    }
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-block h3 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: Consolas, monospace;
    }
    .metric-block p {
      font-size: 0.95rem;
      color: #E0F2FE;
    }

    /* 12. 资讯列表与前沿分析 */
    .news-insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .insight-category {
      font-size: 0.75rem;
      font-weight: 600;
      padding: 3px 8px;
      background: var(--bg-alt);
      color: var(--accent);
      border-radius: 4px;
      align-self: flex-start;
      margin-bottom: 14px;
    }
    .insight-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-dark);
      line-height: 1.45;
    }
    .insight-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }
    .insight-btn {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 13. 用户口碑与行业背书 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 0.925rem;
      color: var(--text-dark);
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: normal;
    }
    .author-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 700;
      font-size: 1.1rem;
    }
    .author-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-dark);
    }
    .author-title {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 14. 适用人群分栏 */
    .personas-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .persona-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      box-shadow: var(--card-shadow);
      text-align: center;
    }
    .persona-icon {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
    }
    .persona-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .persona-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 15. FAQ 精选解答 */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #FFFFFF;
      border: none;
      width: 100%;
      text-align: left;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-answer {
      padding: 0 24px 20px 24px;
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 16. 联系与数据接入收口（单CTA表单） */
    .contact-cta-wrapper {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 48px;
      box-shadow: var(--card-shadow-hover);
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-dark);
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: var(--bg-alt);
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.1);
    }
    .contact-info-panel {
      background: var(--bg-alt);
      border-radius: var(--radius-md);
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .contact-info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin: 20px 0;
    }
    .contact-info-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .contact-info-item strong {
      color: var(--text-dark);
      display: block;
    }

    /* 页脚 */
    .site-footer {
      background-color: var(--bg-slate);
      color: #94A3B8;
      padding: 70px 0 30px 0;
      font-size: 0.875rem;
      border-top: 1px solid #334155;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h4 {
      font-size: 1.3rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 14px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .footer-col h5 {
      font-size: 1rem;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid #334155;
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8125rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .architecture-box, .dark-tech-grid, .contact-cta-wrapper {
        grid-template-columns: 1fr;
      }
      .features-triplet, .painpoints-grid, .release-grid, .solutions-triad, .testimonials-grid, .news-insights-grid {
        grid-template-columns: 1fr 1fr;
      }
      .portal-matrix-grid, .personas-grid, .metrics-row {
        grid-template-columns: 1fr 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .section-py, .section-py-alt, .dark-tech-section {
        padding: 56px 0;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .hero-content h1 {
        font-size: 2.1rem;
      }
      .features-triplet, .painpoints-grid, .release-grid, .solutions-triad, .testimonials-grid, .news-insights-grid, .advantages-grid, .cases-split-grid {
        grid-template-columns: 1fr;
      }
      .nav-menu {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .top-bar-right {
        display: none;
      }
      .architecture-box, .contact-cta-wrapper {
        padding: 24px;
      }
    }

    @media (max-width: 520px) {
      .portal-matrix-grid, .personas-grid, .metrics-row, .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-actions {
        flex-direction: column;
      }
      .btn {
        width: 100%;
      }
    }