/* roulang page: index */
:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-muted: #f1f5f9;
      --bg-dark: #0f172a;
      --bg-dark-card: #1e293b;
      --color-primary: #0f172a;
      --color-secondary: #334155;
      --color-accent: #ea580c;
      --color-accent-hover: #c2410c;
      --color-tech: #0284c7;
      --color-tech-hover: #0369a1;
      --border-color: #e2e8f0;
      --border-dark: #334155;
      --radius: 6px;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.1), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 10px 20px -5px rgba(15, 23, 42, 0.12), 0 4px 6px -2px rgba(15, 23, 42, 0.06);
      --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      color: var(--color-primary);
      background-color: var(--bg-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius);
    }

    ul, ol {
      list-style: none;
    }

    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部双行导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: #ffffff;
      box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
    }

    .top-bar {
      background: var(--bg-dark);
      color: #94a3b8;
      font-size: 0.8125rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .top-bar-item {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .top-bar-item span.highlight {
      color: #f8fafc;
      font-weight: 500;
    }

    .main-nav-bar {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
    }

    .main-nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 74px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-badge {
      background: var(--color-accent);
      color: #ffffff;
      font-weight: 700;
      font-size: 1rem;
      padding: 6px 12px;
      border-radius: var(--radius);
      letter-spacing: 0.5px;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--color-primary);
      letter-spacing: -0.2px;
      line-height: 1.2;
    }

    .brand-sub {
      font-size: 0.75rem;
      color: #64748b;
      display: block;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 22px;
    }

    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--color-secondary);
      position: relative;
      padding: 6px 0;
    }

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

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--color-accent);
      transition: width 0.25s ease;
    }

    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }

    .nav-cta-btn {
      background: var(--color-accent);
      color: #ffffff;
      padding: 10px 20px;
      border-radius: var(--radius);
      font-size: 0.875rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow: 0 2px 6px rgba(234, 88, 12, 0.25);
    }

    .nav-cta-btn:hover {
      background: var(--color-accent-hover);
      box-shadow: 0 4px 12px rgba(234, 88, 12, 0.35);
    }

    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      padding: 8px 12px;
      border-radius: var(--radius);
      font-size: 1.125rem;
      cursor: pointer;
      color: var(--color-primary);
    }

    /* 板块通用样式 */
    section {
      padding: 88px 0;
      position: relative;
    }

    .section-muted {
      background-color: var(--bg-muted);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-dark {
      background-color: var(--bg-dark);
      color: #f8fafc;
    }

    .section-header {
      margin-bottom: 48px;
    }

    .section-header.text-center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      background: rgba(234, 88, 12, 0.1);
      color: var(--color-accent);
      border: 1px solid rgba(234, 88, 12, 0.2);
      border-radius: 4px;
      font-size: 0.8125rem;
      font-weight: 600;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }

    .section-dark .section-badge {
      background: rgba(234, 88, 12, 0.2);
      color: #fb923c;
      border-color: rgba(234, 88, 12, 0.4);
    }

    .section-title {
      font-size: 2.125rem;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.0625rem;
      color: var(--color-secondary);
      line-height: 1.8;
    }

    .section-dark .section-desc {
      color: #94a3b8;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.25s ease;
      gap: 8px;
      text-align: center;
    }

    .btn-primary {
      background: var(--color-accent);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(234, 88, 12, 0.2);
    }

    .btn-primary:hover {
      background: var(--color-accent-hover);
      box-shadow: 0 6px 16px rgba(234, 88, 12, 0.3);
      transform: translateY(-1px);
    }

    .btn-secondary {
      background: #ffffff;
      color: var(--color-primary);
      border-color: var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .btn-secondary:hover {
      background: var(--bg-muted);
      border-color: #cbd5e1;
      transform: translateY(-1px);
    }

    .btn-dark {
      background: var(--bg-dark-card);
      color: #ffffff;
      border-color: var(--border-dark);
    }

    .btn-dark:hover {
      background: #334155;
      transform: translateY(-1px);
    }

    /* 板块 1：Hero 首屏 */
    .hero-section {
      padding: 80px 0 100px;
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(30, 41, 59, 0.92)), url('/assets/images/f5552b5473791b62.webp') center/cover no-repeat;
      color: #ffffff;
      position: relative;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }

    .hero-lead {
      font-size: 1.125rem;
      color: #cbd5e1;
      margin-bottom: 32px;
      line-height: 1.85;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 36px;
    }

    .hero-tag-item {
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 6px 14px;
      border-radius: 4px;
      font-size: 0.875rem;
      color: #e2e8f0;
    }

    .hero-btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .hero-panel-card {
      background: rgba(15, 23, 42, 0.75);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius);
      padding: 32px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }

    .panel-header-title {
      font-size: 1.125rem;
      font-weight: 600;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 16px;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .panel-status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.8125rem;
      color: #22c55e;
    }

    .panel-status::before {
      content: '';
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #22c55e;
      display: inline-block;
      box-shadow: 0 0 8px #22c55e;
    }

    .panel-metrics-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 24px;
    }

    .panel-metric-box {
      background: rgba(255, 255, 255, 0.05);
      padding: 16px;
      border-radius: 4px;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .metric-value {
      font-size: 1.75rem;
      font-weight: 700;
      color: #fb923c;
      font-family: monospace;
      line-height: 1.2;
    }

    .metric-label {
      font-size: 0.8125rem;
      color: #94a3b8;
      margin-top: 4px;
    }

    .panel-list {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 16px;
      font-size: 0.875rem;
      color: #cbd5e1;
    }

    .panel-list-item {
      display: flex;
      justify-content: space-between;
      margin-bottom: 8px;
    }

    /* 板块 2：痛点洞察 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .pain-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .pain-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: #f97316;
    }

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

    .pain-icon-wrapper {
      width: 44px;
      height: 44px;
      background: #fff7ed;
      color: #ea580c;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.125rem;
      margin-bottom: 20px;
    }

    .pain-card h3 {
      font-size: 1.1875rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--color-primary);
    }

    .pain-card p {
      font-size: 0.9375rem;
      color: #64748b;
      line-height: 1.7;
    }

    /* 板块 3：软硬件架构 */
    .arch-grid {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: 44px;
      align-items: center;
    }

    .arch-image-wrap {
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      background: #ffffff;
    }

    .arch-image-wrap img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .arch-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .arch-item {
      display: flex;
      gap: 18px;
      padding: 20px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
    }

    .arch-index {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--color-accent);
      min-width: 32px;
      line-height: 1;
    }

    .arch-info h4 {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--color-primary);
    }

    .arch-info p {
      font-size: 0.9375rem;
      color: #64748b;
      line-height: 1.7;
    }

    /* 板块 4：6核心技术优势 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .adv-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px 26px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
    }

    .adv-card:hover {
      transform: translateY(-4px);
      border-color: #cbd5e1;
      box-shadow: var(--shadow-lg);
    }

    .adv-badge {
      position: absolute;
      top: 28px;
      right: 24px;
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--color-tech);
      background: #e0f2fe;
      padding: 2px 8px;
      border-radius: 4px;
    }

    .adv-icon {
      font-size: 1.5rem;
      margin-bottom: 20px;
      color: var(--color-accent);
      display: inline-block;
    }

    .adv-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--color-primary);
    }

    .adv-card p {
      font-size: 0.9375rem;
      color: #64748b;
      line-height: 1.75;
    }

    /* 板块 5：产品矩阵（3卡片） */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .product-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }

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

    .product-thumb {
      height: 220px;
      overflow: hidden;
      position: relative;
      background: #0f172a;
    }

    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .product-card:hover .product-thumb img {
      transform: scale(1.05);
    }

    .product-body {
      padding: 28px 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .product-tag {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 3px 10px;
      border-radius: 4px;
      background: #f1f5f9;
      color: var(--color-secondary);
      margin-bottom: 12px;
    }

    .product-body h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .product-body p {
      font-size: 0.9375rem;
      color: #64748b;
      margin-bottom: 20px;
      line-height: 1.7;
    }

    .product-specs {
      margin-top: auto;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      margin-bottom: 20px;
      font-size: 0.875rem;
    }

    .spec-row {
      display: flex;
      justify-content: space-between;
      padding: 4px 0;
      color: #475569;
    }

    .spec-row span.val {
      font-weight: 600;
      color: var(--color-primary);
    }

    /* 板块 6：实施方法（4节点流程轴） */
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
      margin-top: 24px;
    }

    .step-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px 20px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      width: 40px;
      height: 40px;
      background: var(--color-accent);
      color: #ffffff;
      font-weight: 700;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.125rem;
      margin-bottom: 18px;
    }

    .step-item h3 {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .step-item p {
      font-size: 0.875rem;
      color: #64748b;
      line-height: 1.7;
    }

    /* 板块 7：深色理念区 */
    .dark-tech-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .tech-quote-card {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      padding: 36px;
      border-radius: var(--radius);
      position: relative;
    }

    .tech-quote-card::before {
      content: '“';
      font-size: 4rem;
      color: rgba(234, 88, 12, 0.3);
      position: absolute;
      top: 10px;
      left: 20px;
      line-height: 1;
    }

    .tech-quote-card p {
      font-size: 1.125rem;
      color: #e2e8f0;
      line-height: 1.8;
      position: relative;
      z-index: 1;
      margin-bottom: 24px;
    }

    .tech-author {
      font-size: 0.875rem;
      color: #94a3b8;
    }

    .tech-author strong {
      color: #ffffff;
    }

    /* 板块 8：细分行业场景（4列） */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .scenario-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

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

    .scenario-img {
      height: 180px;
      overflow: hidden;
    }

    .scenario-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .scenario-card:hover .scenario-img img {
      transform: scale(1.06);
    }

    .scenario-content {
      padding: 22px 18px;
    }

    .scenario-content h3 {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .scenario-content p {
      font-size: 0.875rem;
      color: #64748b;
      line-height: 1.65;
    }

    /* 板块 9：标杆客户复盘 */
    .story-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .story-img-wrap {
      overflow: hidden;
      border-radius: var(--radius);
      height: 340px;
    }

    .story-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .story-body h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--color-primary);
    }

    .story-body p {
      font-size: 0.9375rem;
      color: #64748b;
      margin-bottom: 24px;
      line-height: 1.8;
    }

    .story-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
    }

    .stat-box h4 {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--color-accent);
      line-height: 1.2;
    }

    .stat-box span {
      font-size: 0.8125rem;
      color: #64748b;
    }

    /* 板块 10：关键效能数据指标条 */
    .metrics-bar-section {
      background: #0b1120;
      padding: 60px 0;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }

    .metrics-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }

    .metric-data-item h3 {
      font-size: 2.75rem;
      font-weight: 800;
      color: #fb923c;
      font-family: monospace;
      margin-bottom: 6px;
    }

    .metric-data-item p {
      font-size: 0.9375rem;
      color: #94a3b8;
      font-weight: 500;
    }

    /* 板块 11：客户验收证言 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testimonial-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-quote {
      font-size: 0.9375rem;
      color: #475569;
      line-height: 1.8;
      margin-bottom: 24px;
      position: relative;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      background: #e2e8f0;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--color-primary);
    }

    .author-meta h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--color-primary);
    }

    .author-meta span {
      font-size: 0.8125rem;
      color: #64748b;
    }

    /* 板块 12：技术动态 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .news-cover {
      height: 190px;
      overflow: hidden;
    }

    .news-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .news-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .news-date {
      font-size: 0.8125rem;
      color: #94a3b8;
      margin-bottom: 10px;
    }

    .news-body h3 {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .news-body p {
      font-size: 0.875rem;
      color: #64748b;
      margin-bottom: 20px;
      line-height: 1.7;
    }

    .news-link {
      margin-top: auto;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--color-accent);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块 13：FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

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

    .faq-trigger {
      width: 100%;
      padding: 22px 24px;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.0625rem;
      font-weight: 600;
      color: var(--color-primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }

    .faq-icon {
      font-size: 1.25rem;
      color: var(--color-accent);
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      padding: 0 24px;
      background: #fafafa;
    }

    .faq-item.active .faq-content {
      max-height: 300px;
      padding: 0 24px 22px 24px;
    }

    .faq-content p {
      font-size: 0.9375rem;
      color: #475569;
      line-height: 1.8;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    /* 板块 14：咨询表单 */
    .contact-card-wrap {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      display: grid;
      grid-template-columns: 5fr 7fr;
    }

    .contact-info-panel {
      background: var(--bg-dark);
      color: #f8fafc;
      padding: 48px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-info-panel h3 {
      font-size: 1.75rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .contact-info-panel p {
      color: #94a3b8;
      font-size: 0.9375rem;
      margin-bottom: 32px;
      line-height: 1.8;
    }

    .contact-details-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
      font-size: 0.9375rem;
    }

    .contact-detail-row {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      color: #cbd5e1;
    }

    .contact-form-panel {
      padding: 48px;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-group.full-width {
      grid-column: span 2;
    }

    .form-label {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--color-primary);
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: 4px;
      font-size: 0.9375rem;
      color: var(--color-primary);
      background: #ffffff;
      transition: border-color 0.2s, outline 0.2s;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: 2px solid var(--color-accent);
      border-color: transparent;
    }

    .form-textarea {
      resize: vertical;
      min-height: 100px;
    }

    /* 页脚区域 */
    .site-footer {
      background: #090d16;
      color: #94a3b8;
      padding-top: 80px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 60px;
    }

    .footer-col h4 {
      color: #f8fafc;
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: 22px;
      letter-spacing: -0.2px;
    }

    .footer-col p {
      line-height: 1.8;
      margin-bottom: 16px;
    }

    .footer-nav-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .footer-nav-list a:hover {
      color: #ea580c;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 28px 0;
      font-size: 0.8125rem;
      text-align: center;
    }

    .footer-bottom .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    .footer-bottom a {
      color: #94a3b8;
    }

    .footer-bottom a:hover {
      color: #ea580c;
    }

    /* 移动端响应式断点 */
    @media (max-width: 992px) {
      .hero-grid, .arch-grid, .dark-tech-grid, .story-grid, .contact-card-wrap {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .pain-grid, .advantage-grid, .product-grid, .timeline-steps, .scenario-grid, .metrics-bar-grid, .testimonial-grid, .news-grid, .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .nav-links {
        display: none;
      }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #ffffff;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        border-bottom: 1px solid var(--border-color);
        gap: 16px;
        align-items: flex-start;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-content h1 {
        font-size: 2.25rem;
      }
    }

    @media (max-width: 640px) {
      section {
        padding: 60px 0;
      }
      .pain-grid, .advantage-grid, .product-grid, .timeline-steps, .scenario-grid, .metrics-bar-grid, .testimonial-grid, .news-grid, .footer-grid, .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .hero-content h1 {
        font-size: 1.875rem;
      }
      .contact-info-panel, .contact-form-panel {
        padding: 28px 20px;
      }
      .footer-bottom .container {
        flex-direction: column;
        text-align: center;
        gap: 8px;
      }
    }