/* roulang page: index */
:root {
      --primary-dark: #0F141C;
      --deep-canvas: #0B0F17;
      --accent-blue: #0EA5E9;
      --accent-indigo: #6366F1;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --bg-white: #FFFFFF;
      --bg-subtle: #F8FAFC;
      --bg-alt: #F1F5F9;
      --border-color: #E2E8F0;
      --border-dark: rgba(255, 255, 255, 0.1);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.1);
      --transition: all 300ms cubic-bezier(0.16, 1, 0.3, 1);
    }

    *, *::before, *::after {
      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;
      line-height: 1.8;
      letter-spacing: 0.015em;
      color: var(--text-main);
      background-color: var(--bg-white);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      outline: none;
      transition: var(--transition);
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部双行导航 */
    .topbar {
      background-color: var(--primary-dark);
      color: #94A3B8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .topbar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
    }
    .topbar-info {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .topbar-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(14, 165, 233, 0.15);
      color: #38BDF8;
      padding: 2px 10px;
      border-radius: 9999px;
      font-size: 12px;
      border: 1px solid rgba(56, 189, 248, 0.25);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-wrap {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 76px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 700;
      color: var(--primary-dark);
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-indigo));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 800;
      font-size: 18px;
      box-shadow: 0 4px 10px rgba(14, 165, 233, 0.3);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: #334155;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--accent-blue);
    }
    .nav-links a.active::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-blue);
      border-radius: 2px;
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 通用按钮 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 11px 24px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      white-space: nowrap;
      transition: var(--transition);
    }
    .btn-primary {
      background: linear-gradient(135deg, #0284C7, #4F46E5);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(2, 132, 199, 0.25);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(2, 132, 199, 0.35);
      color: #FFF;
    }
    .btn-ghost {
      background: transparent;
      border: 1px solid var(--border-color);
      color: var(--text-main);
    }
    .btn-ghost:hover {
      border-color: #94A3B8;
      background: var(--bg-subtle);
    }
    .btn-light {
      background: #FFFFFF;
      color: var(--primary-dark);
      box-shadow: var(--shadow-sm);
    }
    .btn-light:hover {
      background: #F8FAFC;
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    /* Section 通用 */
    .section-pad {
      padding: 90px 0;
      position: relative;
    }
    .section-header {
      margin-bottom: 56px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      color: var(--accent-blue);
      background: rgba(14, 165, 233, 0.08);
      padding: 4px 14px;
      border-radius: 9999px;
      margin-bottom: 12px;
      border: 1px solid rgba(14, 165, 233, 0.2);
    }
    .section-title {
      font-size: 34px;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: -0.01em;
      line-height: 1.35;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* 板块1：Hero 首屏全景 */
    .hero-section {
      position: relative;
      background-color: var(--primary-dark);
      background-image: linear-gradient(rgba(15, 20, 28, 0.88), rgba(11, 15, 23, 0.94)), url('/assets/images/7ec5b97489167a3a.webp');
      background-size: cover;
      background-position: center;
      color: #FFFFFF;
      padding: 100px 0 110px 0;
      overflow: hidden;
      border-bottom: 1px solid var(--border-dark);
    }
    .hero-content {
      max-width: 860px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 9999px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #38BDF8;
      font-size: 14px;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 48px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 24px;
      letter-spacing: -0.015em;
    }
    .hero-title .gradient-text {
      background: linear-gradient(135deg, #38BDF8, #818CF8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-description {
      font-size: 18px;
      line-height: 1.85;
      color: #CBD5E1;
      margin-bottom: 36px;
      text-align: center;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .hero-stats-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      padding: 24px 32px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.09);
      border-radius: var(--radius-md);
      backdrop-filter: blur(10px);
    }
    .hero-stat-item {
      text-align: center;
      border-right: 1px solid rgba(255, 255, 255, 0.08);
    }
    .hero-stat-item:last-child {
      border-right: none;
    }
    .stat-number {
      font-size: 30px;
      font-weight: 800;
      color: #38BDF8;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }
    .stat-label {
      font-size: 13px;
      color: #94A3B8;
      margin-top: 4px;
    }

    /* 板块2：痛点与困境对比 */
    .pain-vs-solution {
      background-color: var(--bg-white);
    }
    .comparison-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .comp-col {
      padding: 36px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
    }
    .comp-col.legacy {
      background-color: #FFFDFD;
      border-color: #FEE2E2;
    }
    .comp-col.modern {
      background-color: #F8FAFC;
      border-color: #BAE6FD;
      box-shadow: var(--shadow-sm);
    }
    .comp-header {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .comp-col.legacy .comp-header { color: #DC2626; }
    .comp-col.modern .comp-header { color: #0284C7; }
    .comp-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .comp-list li {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      padding-left: 28px;
      position: relative;
    }
    .comp-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 8px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
    }
    .comp-col.legacy .comp-list li::before {
      background: #FCA5A5;
      border: 2px solid #EF4444;
    }
    .comp-col.modern .comp-list li::before {
      background: #7DD3FC;
      border: 2px solid #0284C7;
    }

    /* 板块3：品牌战略与高标准产品介绍 */
    .arch-blueprint {
      background-color: var(--bg-subtle);
    }
    .blueprint-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .blueprint-image {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }
    .blueprint-image img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .blueprint-content h3 {
      font-size: 26px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 18px;
      line-height: 1.4;
    }
    .blueprint-content p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .tech-specs-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .tech-spec-item strong {
      display: block;
      color: var(--primary-dark);
      font-size: 16px;
      margin-bottom: 4px;
    }
    .tech-spec-item span {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块4：核心优势矩阵 (6卡片) */
    .features-grid-section {
      background-color: var(--bg-white);
    }
    .grid-six {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .card-feature {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      transition: var(--transition);
      position: relative;
    }
    .card-feature:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #CBD5E1;
    }
    .feature-icon-badge {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: #F1F5F9;
      color: var(--accent-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .card-feature h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 12px;
    }
    .card-feature p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块5：产品矩阵 (3卡片) */
    .products-matrix {
      background-color: var(--bg-subtle);
    }
    .matrix-three {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .matrix-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .matrix-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: #BAE6FD;
    }
    .matrix-thumb {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .matrix-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .matrix-card:hover .matrix-thumb img {
      transform: scale(1.05);
    }
    .matrix-body {
      padding: 28px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .matrix-tag {
      font-size: 12px;
      font-weight: 600;
      color: var(--accent-indigo);
      background: rgba(99, 102, 241, 0.08);
      padding: 3px 10px;
      border-radius: 4px;
      width: fit-content;
      margin-bottom: 12px;
    }
    .matrix-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 12px;
    }
    .matrix-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .matrix-footer {
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* 板块6：深色沉浸式技术底座 */
    .deep-tech-section {
      background: var(--deep-canvas);
      color: #FFFFFF;
      position: relative;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .deep-tech-section .section-title {
      color: #FFFFFF;
    }
    .deep-tech-section .section-desc {
      color: #94A3B8;
    }
    .deep-tech-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 40px;
    }
    .tech-pillar-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      transition: var(--transition);
    }
    .tech-pillar-card:hover {
      background: rgba(255, 255, 255, 0.06);
      border-color: rgba(56, 189, 248, 0.4);
    }
    .pillar-code {
      font-family: monospace;
      font-size: 13px;
      color: #38BDF8;
      margin-bottom: 12px;
    }
    .tech-pillar-card h4 {
      font-size: 18px;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 10px;
    }
    .tech-pillar-card p {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.7;
    }

    /* 板块7：数字化实施方法与演进步骤 */
    .process-timeline {
      background-color: var(--bg-white);
    }
    .steps-chain {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-item {
      position: relative;
      padding: 30px 24px;
      background: var(--bg-subtle);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .step-num {
      font-size: 28px;
      font-weight: 800;
      color: #CBD5E1;
      font-family: monospace;
      line-height: 1;
      margin-bottom: 16px;
    }
    .step-item:hover .step-num {
      color: var(--accent-blue);
    }
    .step-item h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 10px;
    }
    .step-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块8：标杆应用成果与故事 */
    .case-story-section {
      background-color: var(--bg-subtle);
    }
    .case-banner-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1fr;
      box-shadow: var(--shadow-md);
    }
    .case-cover-box img {
      width: 100%;
      height: 100%;
      min-height: 380px;
      object-fit: cover;
    }
    .case-detail-box {
      padding: 48px 40px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-tag-line {
      display: flex;
      gap: 8px;
      margin-bottom: 16px;
    }
    .case-tag {
      font-size: 12px;
      color: #0284C7;
      background: #E0F2FE;
      padding: 2px 10px;
      border-radius: 4px;
      font-weight: 600;
    }
    .case-detail-box h3 {
      font-size: 24px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 16px;
      line-height: 1.4;
    }
    .case-detail-box p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .case-metrics-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
    }
    .case-metric-box strong {
      display: block;
      font-size: 24px;
      color: #0F172A;
      font-weight: 800;
    }
    .case-metric-box span {
      font-size: 13px;
      color: #64748B;
    }

    /* 板块9：关键度量条 (Metric Bar) */
    .metric-bar-section {
      background: linear-gradient(135deg, #0F141C 0%, #1E293B 100%);
      color: #FFFFFF;
      padding: 60px 0;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .metrics-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-node-value {
      font-size: 40px;
      font-weight: 800;
      color: #38BDF8;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      margin-bottom: 8px;
    }
    .metric-node-label {
      font-size: 16px;
      font-weight: 600;
      color: #F8FAFC;
      margin-bottom: 4px;
    }
    .metric-node-sub {
      font-size: 13px;
      color: #94A3B8;
    }

    /* 板块10：全场景适用人群与行业生态 */
    .ecosystem-section {
      background-color: var(--bg-white);
    }
    .ecosystem-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .eco-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 22px;
      background: var(--bg-subtle);
      transition: var(--transition);
    }
    .eco-card:hover {
      border-color: #0EA5E9;
      background: #FFFFFF;
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .eco-badge {
      font-size: 12px;
      font-weight: 700;
      color: #0284C7;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 12px;
    }
    .eco-card h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 12px;
    }
    .eco-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块11：客户证言与行业评价 */
    .testimonials-section {
      background-color: var(--bg-subtle);
    }
    .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 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 15px;
      letter-spacing: 2px;
      margin-bottom: 16px;
    }
    .testi-text {
      font-size: 14px;
      color: #334155;
      line-height: 1.8;
      margin-bottom: 24px;
      font-style: italic;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #475569;
      font-size: 14px;
    }
    .author-info h5 {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary-dark);
    }
    .author-info span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块12：前沿资讯与平台开发洞察 */
    .insights-section {
      background-color: var(--bg-white);
    }
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #FFFFFF;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .insight-card:hover {
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
      transform: translateY(-3px);
    }
    .insight-cover {
      height: 180px;
      overflow: hidden;
    }
    .insight-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .insight-card:hover .insight-cover img {
      transform: scale(1.04);
    }
    .insight-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .insight-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: #94A3B8;
      margin-bottom: 12px;
    }
    .insight-body h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 10px;
      line-height: 1.5;
    }
    .insight-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .insight-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--accent-blue);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块13：常见技术与合作咨询 FAQ */
    .faq-section {
      background-color: var(--bg-subtle);
    }
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-trigger {
      width: 100%;
      text-align: left;
      padding: 22px 28px;
      background: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 17px;
      font-weight: 600;
      color: var(--primary-dark);
    }
    .faq-trigger:hover {
      color: var(--accent-blue);
    }
    .faq-icon {
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #94A3B8;
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--accent-blue);
    }
    .faq-content {
      padding: 0 28px 24px 28px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      display: none;
    }
    .faq-item.active .faq-content {
      display: block;
    }

    /* 全幅转化区 (CTA Strip) */
    .cta-strip-section {
      background: linear-gradient(135deg, #0F141C 0%, #0369A1 100%);
      color: #FFFFFF;
      padding: 80px 0;
      text-align: center;
    }
    .cta-inner {
      max-width: 760px;
      margin: 0 auto;
    }
    .cta-inner h2 {
      font-size: 36px;
      font-weight: 800;
      margin-bottom: 20px;
      letter-spacing: -0.01em;
    }
    .cta-inner p {
      font-size: 16px;
      color: #E0F2FE;
      line-height: 1.8;
      margin-bottom: 36px;
    }
    .cta-button-group {
      display: flex;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
    }

    /* 页脚标准体系 */
    .site-footer {
      background: #090D14;
      color: #94A3B8;
      padding: 70px 0 30px 0;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 60px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-desc {
      font-size: 13px;
      line-height: 1.8;
      color: #64748B;
      margin-top: 14px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links a {
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: #38BDF8;
      padding-left: 4px;
    }
    .footer-contact-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
      margin-bottom: 14px;
    }
    .footer-contact-item span {
      font-size: 12px;
      color: #64748B;
    }
    .footer-contact-item strong {
      color: #E2E8F0;
      font-size: 14px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* 移动端菜单控制 */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      font-size: 18px;
      color: var(--primary-dark);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .grid-six { grid-template-columns: repeat(2, 1fr); }
      .matrix-three { grid-template-columns: 1fr; }
      .deep-tech-grid { grid-template-columns: repeat(2, 1fr); }
      .steps-chain { grid-template-columns: repeat(2, 1fr); }
      .ecosystem-grid { grid-template-columns: repeat(2, 1fr); }
      .testimonials-grid { grid-template-columns: 1fr; }
      .insights-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-links, .nav-cta .btn { display: none; }
      .mobile-menu-btn { display: block; }
      .comparison-grid { grid-template-columns: 1fr; }
      .blueprint-layout { grid-template-columns: 1fr; }
      .case-banner-card { grid-template-columns: 1fr; }
      .hero-stats-strip { grid-template-columns: 1fr 1fr; gap: 16px; }
      .metrics-container { grid-template-columns: 1fr 1fr; gap: 24px; }
      .hero-title { font-size: 32px; }
      .section-title { font-size: 26px; }
      .section-pad { padding: 60px 0; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }