/* roulang page: index */
:root {
      --primary: #0052D9;
      --primary-hover: #003cab;
      --secondary: #00D084;
      --accent: #FF6827;
      --bg-base: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-muted: #F1F5F9;
      --bg-dark: #0F172A;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 6px 12px -2px rgba(15, 23, 42, 0.08), 0 3px 6px -3px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 16px 28px -5px rgba(15, 23, 42, 0.12);
      --container-max: 1240px;
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-body);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }

    /* 顶部通告条 */
    .top-bar {
      background: #0B1120;
      color: #94A3B8;
      font-size: 0.8125rem;
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .top-bar-meta {
      display: flex;
      gap: 1.5rem;
    }
    .top-bar-meta span {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 4.25rem;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .logo-badge {
      background: var(--primary);
      color: #fff;
      font-size: 0.75rem;
      padding: 0.2rem 0.5rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 1.75rem;
      align-items: center;
    }
    .nav-item a {
      font-weight: 500;
      color: var(--text-main);
      font-size: 0.9375rem;
      padding: 0.5rem 0;
      position: relative;
    }
    .nav-item a:hover {
      color: var(--primary);
    }
    .nav-item a.active {
      color: var(--primary);
      font-weight: 600;
    }
    .nav-item a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.65rem 1.4rem;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      min-height: 44px;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--primary);
      color: #FFFFFF;
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      box-shadow: 0 4px 12px rgba(0, 82, 217, 0.35);
    }
    .btn-outline {
      border-color: #CBD5E1;
      background: #FFFFFF;
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #F0F7FF;
    }
    .btn-accent {
      background: var(--accent);
      color: #fff;
    }
    .btn-accent:hover {
      background: #e05417;
      box-shadow: 0 4px 12px rgba(255, 104, 39, 0.35);
    }

    /* 增强型面包屑导航条 */
    .breadcrumb-bar {
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
      padding: 0.625rem 0;
      font-size: 0.8125rem;
      color: var(--text-muted);
    }
    .breadcrumb-list {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      list-style: none;
    }
    .breadcrumb-separator {
      color: #CBD5E1;
    }
    .breadcrumb-current {
      color: var(--primary);
      font-weight: 600;
    }

    /* 板块通用 */
    .section {
      padding: 5rem 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-surface);
    }
    .section-muted {
      background-color: var(--bg-muted);
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 3.5rem;
      max-width: 820px;
    }
    .section-header.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      color: var(--primary);
      background: #EFF6FF;
      padding: 0.25rem 0.75rem;
      border-radius: 999px;
      margin-bottom: 0.75rem;
    }
    .section-dark .section-tag {
      background: rgba(0, 82, 217, 0.25);
      color: #60A5FA;
    }
    .section-title {
      font-size: clamp(1.6rem, 2.8vw, 2.25rem);
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.35;
      letter-spacing: -0.01em;
      margin-bottom: 1rem;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      line-height: 1.75;
      color: var(--text-body);
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 1. 首屏 Hero */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, #0B1120 0%, #1E293B 100%);
      color: #fff;
      padding: 5.5rem 0 6rem;
      overflow: hidden;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/549d1337fee265bd.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.22;
      mix-blend-mode: luminosity;
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3.5rem;
      align-items: center;
    }
    .hero-title {
      font-size: clamp(2rem, 3.8vw, 3.1rem);
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.02em;
      margin-bottom: 1.25rem;
      color: #FFFFFF;
    }
    .hero-title span {
      background: linear-gradient(90deg, #38BDF8 0%, #00D084 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-summary {
      font-size: 1.0625rem;
      color: #CBD5E1;
      margin-bottom: 2rem;
      line-height: 1.8;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      margin-bottom: 2.5rem;
    }
    .hero-stats-strip {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
      padding-top: 1.75rem;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
    }
    .hero-stat-item h4 {
      font-size: 1.6rem;
      font-weight: 700;
      color: #38BDF8;
      line-height: 1.2;
    }
    .hero-stat-item p {
      font-size: 0.8125rem;
      color: #94A3B8;
      margin-top: 0.25rem;
    }

    /* Hero 控制台拟真卡片 */
    .dashboard-preview {
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 1.5rem;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(12px);
    }
    .dash-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 1rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      margin-bottom: 1.25rem;
    }
    .dash-title {
      font-size: 0.9375rem;
      font-weight: 600;
      color: #E2E8F0;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background: var(--secondary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--secondary);
    }
    .dash-badge {
      font-size: 0.75rem;
      background: rgba(0, 82, 217, 0.3);
      color: #93C5FD;
      padding: 0.2rem 0.5rem;
      border-radius: 4px;
    }
    .dash-grid-metrics {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
      margin-bottom: 1.25rem;
    }
    .dash-metric-card {
      background: rgba(30, 41, 59, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: var(--radius-sm);
      padding: 0.85rem;
    }
    .dash-metric-val {
      font-size: 1.35rem;
      font-weight: 700;
      color: #F8FAFC;
    }
    .dash-metric-label {
      font-size: 0.75rem;
      color: #94A3B8;
    }
    .dash-chart-mock {
      background: rgba(30, 41, 59, 0.5);
      border-radius: var(--radius-sm);
      padding: 1rem;
      border: 1px dashed rgba(255, 255, 255, 0.15);
    }
    .mock-bars {
      display: flex;
      align-items: flex-end;
      height: 80px;
      gap: 0.6rem;
      margin-top: 0.75rem;
    }
    .mock-bar {
      flex: 1;
      background: linear-gradient(180deg, var(--primary) 0%, rgba(0, 82, 217, 0.2) 100%);
      border-radius: 3px 3px 0 0;
    }
    .mock-bar.accent {
      background: linear-gradient(180deg, var(--accent) 0%, rgba(255, 104, 39, 0.2) 100%);
    }

    /* 2. 行业痛点区 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .pain-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 1.75rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }
    .pain-index {
      font-size: 1.75rem;
      font-weight: 800;
      color: #E2E8F0;
      line-height: 1;
      margin-bottom: 1rem;
    }
    .pain-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .pain-desc {
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 3. 架构介绍区 (图文) */
    .split-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .split-image-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .spec-table {
      width: 100%;
      margin-top: 1.5rem;
      border-collapse: collapse;
      font-size: 0.875rem;
    }
    .spec-table th, .spec-table td {
      padding: 0.75rem 0.5rem;
      border-bottom: 1px solid var(--border-color);
      text-align: left;
    }
    .spec-table th {
      color: var(--text-muted);
      font-weight: 600;
      width: 35%;
    }
    .spec-table td {
      color: var(--text-main);
      font-weight: 500;
    }

    /* 4. 核心优势六矩阵 */
    .grid-3col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .matrix-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 2rem 1.75rem;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .matrix-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .matrix-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: #EFF6FF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.25rem;
      margin-bottom: 1.25rem;
    }
    .matrix-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.65rem;
    }
    .matrix-desc {
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 5. 热门套件卡片 */
    .suite-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 2.25rem 2rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .suite-card:hover {
      box-shadow: var(--shadow-lg);
      border-color: #93C5FD;
    }
    .suite-badge {
      display: inline-block;
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 600;
      background: #F1F5F9;
      color: var(--text-body);
      padding: 0.25rem 0.6rem;
      border-radius: 4px;
      margin-bottom: 1rem;
    }
    .suite-featured {
      border: 2px solid var(--primary);
    }
    .suite-featured .suite-badge {
      background: var(--primary);
      color: #FFFFFF;
    }
    .suite-title {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .suite-desc {
      font-size: 0.9375rem;
      color: var(--text-body);
      margin-bottom: 1.5rem;
      line-height: 1.65;
    }
    .suite-features {
      list-style: none;
      margin-bottom: 2rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1.25rem;
    }
    .suite-features li {
      position: relative;
      padding-left: 1.5rem;
      font-size: 0.9375rem;
      color: var(--text-body);
      margin-bottom: 0.75rem;
    }
    .suite-features li::before {
      content: '✓';
      position: absolute;
      left: 0;
      color: var(--secondary);
      font-weight: 800;
    }

    /* 6. 流程步骤轴 */
    .step-chain {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .step-item {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .step-num {
      width: 40px;
      height: 40px;
      background: var(--primary);
      color: #fff;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.25rem;
      font-size: 1.1rem;
    }
    .step-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .step-text {
      font-size: 0.875rem;
      color: var(--text-body);
      line-height: 1.65;
    }

    /* 7. 深色理念与算法架构 */
    .algo-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .algo-card {
      background: #1E293B;
      border: 1px solid #334155;
      border-radius: var(--radius-md);
      padding: 1.75rem;
      margin-bottom: 1.25rem;
    }
    .algo-card h4 {
      font-size: 1.125rem;
      color: #38BDF8;
      margin-bottom: 0.5rem;
    }
    .algo-card p {
      font-size: 0.9375rem;
      color: #94A3B8;
      line-height: 1.7;
    }

    /* 8. 案例故事板块 */
    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      margin-bottom: 2rem;
      box-shadow: var(--shadow-sm);
    }
    .case-content {
      padding: 2.75rem 2.5rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      background: #EFF6FF;
      padding: 0.2rem 0.6rem;
      border-radius: 4px;
      align-self: flex-start;
      margin-bottom: 0.75rem;
    }
    .case-title {
      font-size: 1.45rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 1rem;
    }
    .case-p {
      font-size: 0.9375rem;
      color: var(--text-body);
      margin-bottom: 1.25rem;
      line-height: 1.7;
    }
    .case-img-wrap {
      height: 100%;
      min-height: 280px;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* 9. 全宽指标统计条 */
    .metrics-bar {
      background: linear-gradient(90deg, #0052D9 0%, #003cab 100%);
      color: #FFFFFF;
      padding: 3.5rem 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-box h3 {
      font-size: clamp(2rem, 3.5vw, 2.75rem);
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 0.5rem;
      color: #FFFFFF;
    }
    .metric-box p {
      font-size: 0.9375rem;
      color: #BFDBFE;
    }

    /* 10. 多角色适用人群 */
    .role-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .role-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem 1.5rem;
      transition: var(--transition);
    }
    .role-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .role-name {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .role-focus {
      font-size: 0.8125rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 1rem;
    }
    .role-list {
      list-style: none;
      font-size: 0.875rem;
      color: var(--text-body);
    }
    .role-list li {
      margin-bottom: 0.5rem;
      position: relative;
      padding-left: 1.1rem;
    }
    .role-list li::before {
      content: '•';
      position: absolute;
      left: 0;
      color: var(--primary);
      font-weight: bold;
    }

    /* 11. 真实客户评价 */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .testi-card {
      background: #FFFFFF;
      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;
    }
    .testi-quote {
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 1.5rem;
      font-style: normal;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1rem;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .testi-info h5 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .testi-info p {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 12. 资讯动态摘要 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .news-card {
      background: #FFFFFF;
      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;
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
      transform: translateY(-3px);
    }
    .news-thumb {
      height: 180px;
      overflow: hidden;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }
    .news-body {
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 0.5rem;
    }
    .news-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      line-height: 1.45;
    }
    .news-excerpt {
      font-size: 0.875rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 1.25rem;
    }
    .news-foot {
      margin-top: auto;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--primary);
    }

    /* 13. 高频疑问手风琴 FAQ */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-item summary {
      padding: 1.25rem 1.5rem;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      user-select: none;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary::after {
      content: '+';
      font-size: 1.4rem;
      color: var(--primary);
      transition: var(--transition);
    }
    .faq-item[open] summary::after {
      content: '−';
    }
    .faq-content {
      padding: 0 1.5rem 1.25rem;
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.75;
      border-top: 1px dashed var(--border-color);
      padding-top: 1rem;
    }

    /* 14. 底部转化驱动 CTA */
    .cta-card-box {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      border-radius: var(--radius-lg);
      padding: 3.5rem 3rem;
      color: #FFFFFF;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
      box-shadow: var(--shadow-lg);
    }
    .cta-text h2 {
      font-size: clamp(1.6rem, 2.5vw, 2.15rem);
      font-weight: 700;
      margin-bottom: 1rem;
      line-height: 1.35;
    }
    .cta-text p {
      font-size: 1rem;
      color: #94A3B8;
      line-height: 1.75;
      margin-bottom: 1.5rem;
    }
    .form-container {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      backdrop-filter: blur(8px);
    }
    .form-group {
      margin-bottom: 1rem;
    }
    .form-label {
      display: block;
      font-size: 0.8125rem;
      font-weight: 600;
      color: #CBD5E1;
      margin-bottom: 0.35rem;
    }
    .form-control {
      width: 100%;
      height: 44px;
      padding: 0 0.85rem;
      border-radius: var(--radius-sm);
      border: 1px solid #475569;
      background: #0F172A;
      color: #FFFFFF;
      font-size: 0.9375rem;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: #38BDF8;
      box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25);
    }
    select.form-control {
      cursor: pointer;
    }

    /* 页脚 */
    .site-footer {
      background: #0A0F1D;
      color: #94A3B8;
      font-size: 0.875rem;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid #1E293B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-logo {
      font-size: 1.25rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1rem;
      display: block;
    }
    .footer-desc {
      font-size: 0.875rem;
      line-height: 1.75;
      color: #64748B;
    }
    .footer-title {
      font-size: 0.9375rem;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 1.25rem;
      letter-spacing: 0.02em;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-contact li {
      margin-bottom: 0.75rem;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8125rem;
      color: #64748B;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .pain-grid, .step-chain, .role-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3col, .testi-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-card {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
      }
      .split-layout, .algo-container, .cta-card-box {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
      }
      .section {
        padding: 3.5rem 0;
      }
      .pain-grid, .step-chain, .role-grid, .grid-3col, .testi-grid, .news-grid, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats-strip {
        grid-template-columns: 1fr;
        gap: 1rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .top-bar-inner {
        flex-direction: column;
        align-items: flex-start;
      }
    }