/* roulang page: index */
:root {
      --primary: #0C2B2F;
      --primary-light: #164E55;
      --accent: #0EA5E9;
      --accent-hover: #0284C7;
      --highlight: #F97316;
      --bg-main: #F8FAFC;
      --bg-soft: #F1F5F9;
      --bg-dark: #061719;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --card-bg: #FFFFFF;
      --border-color: rgba(15, 23, 42, 0.08);
      --border-dark: rgba(255, 255, 255, 0.12);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-sm: 0 2px 8px rgba(12, 43, 47, 0.04);
      --shadow-md: 0 8px 24px -4px rgba(12, 43, 47, 0.07);
      --shadow-lg: 0 20px 35px -8px rgba(12, 43, 47, 0.12);
      --font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    }
    *, *::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-main);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    input, select, textarea, button {
      font-family: inherit;
      font-size: inherit;
    }
    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .section-spacing {
      padding: 86px 0;
      scroll-margin-top: 80px;
    }
    .section-title-wrap {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 52px;
    }
    .badge-tag {
      display: inline-block;
      padding: 5px 14px;
      font-size: 0.8125rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      border-radius: 9999px;
      background: rgba(14, 165, 233, 0.1);
      color: var(--accent);
      margin-bottom: 14px;
      border: 1px solid rgba(14, 165, 233, 0.2);
    }
    .badge-tag-orange {
      background: rgba(249, 115, 22, 0.1);
      color: var(--highlight);
      border-color: rgba(249, 115, 22, 0.2);
    }
    .section-h2 {
      font-size: 2.125rem;
      font-weight: 700;
      line-height: 1.35;
      color: var(--primary);
      margin-bottom: 14px;
      letter-spacing: -0.02em;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* Top Utility Bar */
    .top-bar {
      background: #F1F5F9;
      border-bottom: 1px solid rgba(15, 23, 42, 0.06);
      font-size: 0.8125rem;
      color: #64748B;
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .status-dot {
      display: inline-block;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: #10B981;
      margin-right: 6px;
    }

    /* Main Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 16px rgba(12, 43, 47, 0.03);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
    }
    .logo-symbol {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-size: 1.15rem;
      font-weight: 800;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-menu a {
      font-size: 0.95rem;
      font-weight: 500;
      color: #334155;
    }
    .nav-menu a:hover {
      color: var(--accent);
    }
    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background: var(--accent);
      color: #FFF;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(14, 165, 233, 0.25);
    }
    .nav-cta-btn:hover {
      background: var(--accent-hover);
      transform: translateY(-1px);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--primary);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* Hero 斜切色块首屏 */
    .hero-skew-wrap {
      position: relative;
      background: linear-gradient(145deg, #061719 0%, #0C2B2F 60%, #164E55 100%);
      color: #FFF;
      padding: 110px 0 150px;
      overflow: hidden;
      clip-path: polygon(0 0, 100% 0, 100% 93%, 0 100%);
    }
    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/4235cc13fd66b516.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.16;
      mix-blend-mode: luminosity;
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 3.1rem;
      font-weight: 800;
      line-height: 1.22;
      letter-spacing: -0.02em;
      margin-bottom: 22px;
      color: #FFFFFF;
    }
    .hero-h1 span {
      color: #38BDF8;
      background: linear-gradient(90deg, #38BDF8 0%, #7DD3FC 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.125rem;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 34px;
    }
    .hero-action-row {
      display: flex;
      gap: 16px;
      align-items: center;
      flex-wrap: wrap;
    }
    .btn-solid-primary {
      padding: 14px 34px;
      background: var(--highlight);
      color: #FFF;
      font-weight: 600;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      box-shadow: 0 4px 16px rgba(249, 115, 22, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .btn-solid-primary:hover {
      background: #EA580C;
      transform: translateY(-2px);
    }
    .btn-outline-soft {
      padding: 14px 28px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #F8FAFC;
      border-radius: var(--radius-sm);
      font-weight: 500;
    }
    .btn-outline-soft:hover {
      background: rgba(255, 255, 255, 0.15);
    }
    .hero-dashboard-preview {
      background: rgba(255, 255, 255, 0.06);
      backdrop-filter: blur(14px);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    }
    .preview-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 14px;
      margin-bottom: 18px;
    }
    .preview-dots {
      display: flex;
      gap: 6px;
    }
    .preview-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.25);
    }
    .preview-title {
      font-size: 0.85rem;
      color: #94A3B8;
      font-weight: 500;
    }
    .preview-stats-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 18px;
    }
    .p-stat-card {
      background: rgba(12, 43, 47, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 14px;
      border-radius: var(--radius-sm);
    }
    .p-stat-card .label {
      font-size: 0.75rem;
      color: #94A3B8;
      display: block;
      margin-bottom: 4px;
    }
    .p-stat-card .val {
      font-size: 1.35rem;
      font-weight: 700;
      color: #38BDF8;
      font-variant-numeric: tabular-nums;
    }
    .preview-radar-box {
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      max-height: 200px;
    }

    /* 板块 2：痛点唤醒区 */
    .pain-section {
      background: #F1F5F9;
      margin-top: -30px;
      padding-top: 100px;
    }
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .pain-card {
      background: #FFF;
      border: 1px solid rgba(239, 68, 68, 0.15);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      position: relative;
      transition: 0.3s ease;
      box-shadow: var(--shadow-sm);
    }
    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(239, 68, 68, 0.35);
    }
    .pain-icon {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: #FEE2E2;
      color: #EF4444;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin-bottom: 18px;
    }
    .pain-card h3 {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .pain-card p {
      font-size: 0.8875rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 3：服务亮点 / 整体架构 */
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .arch-left-img {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .spec-list {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .spec-item {
      display: flex;
      gap: 14px;
      align-items: flex-start;
      background: #FFF;
      padding: 16px 20px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }
    .spec-icon {
      flex-shrink: 0;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(14, 165, 233, 0.15);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 700;
      margin-top: 3px;
    }
    .spec-item h4 {
      font-size: 1rem;
      color: var(--primary);
      margin-bottom: 3px;
    }
    .spec-item p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 4：核心优势分析矩阵 (6卡片) */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .adv-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      transition: 0.3s;
      box-shadow: var(--shadow-sm);
    }
    .adv-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(14, 165, 233, 0.4);
    }
    .adv-icon-wrap {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, rgba(12, 43, 47, 0.08) 100%);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      font-weight: bold;
      margin-bottom: 20px;
    }
    .adv-card h3 {
      font-size: 1.18rem;
      color: var(--primary);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .adv-card p {
      font-size: 0.9125rem;
      color: var(--text-muted);
      line-height: 1.68;
    }

    /* 板块 5：产品与系统模块 (3卡片) */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .prod-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: 0.3s;
    }
    .prod-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .prod-thumb {
      height: 200px;
      overflow: hidden;
    }
    .prod-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: 0.4s ease;
    }
    .prod-card:hover .prod-thumb img {
      transform: scale(1.05);
    }
    .prod-body {
      padding: 26px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .prod-body h3 {
      font-size: 1.25rem;
      color: var(--primary);
      margin-bottom: 10px;
      font-weight: 700;
    }
    .prod-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.65;
    }
    .prod-features {
      list-style: none;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .prod-features li {
      font-size: 0.85rem;
      color: #475569;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .prod-features li::before {
      content: "•";
      color: var(--accent);
      font-size: 1.2rem;
      line-height: 0;
    }
    .prod-btn {
      align-self: flex-start;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .prod-btn:hover {
      color: var(--primary);
      text-decoration: underline;
    }

    /* 板块 6：时段卡 / 标准化推进流 */
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .timeline-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-num {
      font-size: 2.25rem;
      font-weight: 800;
      color: rgba(14, 165, 233, 0.25);
      line-height: 1;
      margin-bottom: 12px;
      font-variant-numeric: tabular-nums;
    }
    .timeline-card h3 {
      font-size: 1.1rem;
      color: var(--primary);
      margin-bottom: 10px;
      font-weight: 700;
    }
    .timeline-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 7：深色理念与产业智库沉浸区 */
    .dark-immersion-sec {
      background: var(--bg-dark);
      color: #FFF;
      padding: 90px 0;
      position: relative;
    }
    .dark-immersion-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 52px;
      align-items: center;
    }
    .dark-immersion-sec .section-h2 {
      color: #FFF;
    }
    .dark-immersion-sec .section-desc {
      color: #94A3B8;
    }
    .dark-quote-box {
      border-left: 3px solid var(--accent);
      padding-left: 20px;
      margin: 28px 0;
      font-style: italic;
      color: #CBD5E1;
      font-size: 1.05rem;
      line-height: 1.8;
    }
    .dark-image-frame {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-dark);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    }

    /* 板块 8：标杆园区与政企实践故事 */
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .case-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .case-img-box {
      height: 220px;
      overflow: hidden;
    }
    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content {
      padding: 30px;
    }
    .case-tag {
      font-size: 0.75rem;
      background: #E0F2FE;
      color: #0369A1;
      padding: 3px 10px;
      border-radius: 4px;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 12px;
    }
    .case-content h3 {
      font-size: 1.25rem;
      color: var(--primary);
      margin-bottom: 14px;
      font-weight: 700;
    }
    .case-content p {
      font-size: 0.9125rem;
      color: var(--text-muted);
      line-height: 1.68;
      margin-bottom: 18px;
    }
    .case-metrics {
      display: flex;
      gap: 20px;
      border-top: 1px solid rgba(15, 23, 42, 0.06);
      padding-top: 16px;
    }
    .c-metric-item .num {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--highlight);
      font-variant-numeric: tabular-nums;
    }
    .c-metric-item .txt {
      font-size: 0.75rem;
      color: var(--text-light);
    }

    /* 板块 9：关键成效数据统计条 */
    .stats-bar-sec {
      background: linear-gradient(90deg, #0C2B2F 0%, #164E55 100%);
      color: #FFF;
      padding: 56px 0;
    }
    .stats-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;      text-align: center;
    }
    .stats-bar-item {
      padding: 0 16px;
      border-right: 1px solid rgba(255, 255, 255, 0.12);
    }
    .stats-bar-item:last-child {
      border-right: none;
    }
    .stats-bar-number {
      font-size: 2.75rem;
      font-weight: 800;
      color: #38BDF8;
      line-height: 1.1;
      margin-bottom: 8px;
      font-variant-numeric: tabular-nums;
    }
    .stats-bar-label {
      font-size: 0.9375rem;
      font-weight: 500;
      color: #E2E8F0;
      margin-bottom: 4px;
    }
    .stats-bar-sub {
      font-size: 0.775rem;
      color: #94A3B8;
    }

    /* 板块 10：适用人群与应用场景细分 */
    .persona-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .persona-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: 0.3s;
    }
    .persona-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent);
    }
    .persona-role-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent);
      background: rgba(14, 165, 233, 0.08);
      display: inline-block;
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 14px;
      align-self: flex-start;
    }
    .persona-card h3 {
      font-size: 1.15rem;
      color: var(--primary);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .persona-card p {
      font-size: 0.8875rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .persona-focus-list {
      list-style: none;
      font-size: 0.825rem;
      color: #334155;
      border-top: 1px dashed rgba(15, 23, 42, 0.1);
      padding-top: 14px;
    }
    .persona-focus-list li {
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .persona-focus-list li::before {
      content: "✓";
      color: #10B981;
      font-weight: bold;
    }

    /* 板块 11：行业前沿资讯（左图右文 & 卡片流） */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: 0.3s;
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .news-card-img {
      height: 180px;
      overflow: hidden;
    }
    .news-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-card-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-card-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.775rem;
      color: var(--text-light);
      margin-bottom: 10px;
    }
    .news-card-title {
      font-size: 1.075rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .news-card-excerpt {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .news-anchor-link {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--accent);
      align-self: flex-start;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .news-anchor-link:hover {
      color: var(--accent-hover);
    }

    /* 板块 12：用户评价与口碑保障 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .testimonial-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .testimonial-stars {
      color: #F59E0B;
      font-size: 0.95rem;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }
    .testimonial-text {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 22px;
      flex-grow: 1;
    }
    .testimonial-author-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid rgba(15, 23, 42, 0.06);
      padding-top: 16px;
    }
    .testimonial-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .author-name {
      font-size: 0.925rem;
      font-weight: 700;
      color: var(--primary);
    }
    .author-title {
      font-size: 0.775rem;
      color: var(--text-light);
    }

    /* 板块 13：常见问题 FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: 0.25s;
    }
    .faq-header {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      background: none;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
    }
    .faq-header:hover {
      color: var(--accent);
    }
    .faq-icon-arrow {
      width: 20px;
      height: 20px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: transform 0.3s ease;
      color: #94A3B8;
      font-weight: bold;
    }
    .faq-item.active .faq-icon-arrow {
      transform: rotate(180deg);
      color: var(--accent);
    }
    .faq-body {
      display: none;
      padding: 0 24px 22px;
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid rgba(15, 23, 42, 0.04);
      padding-top: 14px;
    }
    .faq-item.active .faq-body {
      display: block;
    }

    /* 板块 14：预约演示与引资转化 CTA 表单 */
    .cta-final-sec {
      background: linear-gradient(135deg, #061719 0%, #0C2B2F 100%);
      color: #FFF;
      position: relative;
      overflow: hidden;
    }
    .cta-final-box {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 52px;
      align-items: center;
      box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
    }
    .cta-left h2 {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: #FFF;
    }
    .cta-left p {
      font-size: 1.025rem;
      color: #CBD5E1;
      line-height: 1.75;
      margin-bottom: 28px;
    }
    .cta-direct-call {
      display: flex;
      align-items: center;
      gap: 16px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 24px;
    }
    .call-num {
      font-size: 1.6rem;
      font-weight: 800;
      color: #38BDF8;
      letter-spacing: 0.02em;
    }
    .cta-form {
      background: #FFF;
      padding: 34px;
      border-radius: var(--radius-md);
      color: var(--text-main);
      box-shadow: var(--shadow-lg);
    }
    .cta-form h3 {
      font-size: 1.25rem;
      color: var(--primary);
      margin-bottom: 8px;
      font-weight: 700;
    }
    .cta-form-tip {
      font-size: 0.8125rem;
      color: var(--text-light);
      margin-bottom: 20px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
    }
    .form-input, .form-select {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      background: #F8FAFC;
      transition: 0.2s;
    }
    .form-input:focus, .form-select:focus {
      outline: none;
      border-color: var(--accent);
      background: #FFF;
      box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
    }
    .btn-submit-form {
      width: 100%;
      padding: 13px;
      background: var(--highlight);
      color: #FFF;
      border: none;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      margin-top: 10px;
      transition: 0.25s;
    }
    .btn-submit-form:hover {
      background: #EA580C;
    }

    /* 统一页脚 */
    .site-footer {
      background: #040E10;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.8875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 50px;
    }
    .footer-brand {
      font-size: 1.3rem;
      font-weight: 800;
      color: #FFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand-desc {
      line-height: 1.7;
      margin-bottom: 18px;
      font-size: 0.85rem;
    }
    .footer-col h4 {
      font-size: 1rem;
      color: #FFF;
      margin-bottom: 20px;
      font-weight: 700;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-col h4::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 24px;
      height: 2px;
      background: var(--accent);
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #38BDF8;
      padding-left: 4px;
    }
    .footer-contact-item {
      margin-bottom: 10px;
      line-height: 1.6;
      font-size: 0.85rem;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 26px;
      text-align: center;
      font-size: 0.8rem;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* 移动端与平板响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .arch-grid, .dark-immersion-grid, .cta-final-box {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .pain-grid, .timeline-steps, .persona-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .advantage-grid, .product-grid, .news-grid, .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        position: fixed;
        top: 74px;
        left: 0;
        right: 0;
        background: #FFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        gap: 18px;
        display: none;
        border-bottom: 1px solid var(--border-color);
      }
      .nav-menu.active {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-cta-btn {
        display: none;
      }
      .hero-h1 {
        font-size: 2.15rem;
      }
      .section-h2 {
        font-size: 1.65rem;
      }
      .hero-skew-wrap {
        clip-path: none;
        padding: 60px 0 70px;
      }
      .pain-section {
        margin-top: 0;
        padding-top: 60px;
      }
      .stats-bar-grid {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 24px;
      }
      .stats-bar-item {
        border-right: none;
      }
      .case-grid, .advantage-grid, .product-grid, .news-grid, .testimonial-grid, .persona-grid, .pain-grid, .timeline-steps {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .cta-final-box {
        padding: 30px 20px;
      }
      .cta-form {
        padding: 20px;
      }
    }
    @media (max-width: 520px) {
      .hero-action-row {
        flex-direction: column;
        align-items: stretch;
      }
      .btn-solid-primary, .btn-outline-soft {
        text-align: center;
      }
      .stats-bar-grid {
        grid-template-columns: 1fr;
      }
      .preview-stats-grid {
        grid-template-columns: 1fr;
      }
    }