/* roulang page: index */
:root {
      --primary: #0F2438;
      --primary-light: #1A3854;
      --accent: #FF6B2B;
      --accent-hover: #E55A1D;
      --success: #10B981;
      --bg-light: #F4F7FA;
      --bg-white: #FFFFFF;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: rgba(15, 36, 56, 0.08);
      --card-shadow: 0 10px 25px -5px rgba(15, 36, 56, 0.06), 0 8px 10px -6px rgba(15, 36, 56, 0.04);
      --card-hover-shadow: 0 20px 30px -10px rgba(15, 36, 56, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --container-max: 1240px;
      --font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }

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

    body {
      font-family: var(--font-family);
      color: var(--text-main);
      background-color: #FAFCFE;
      line-height: 1.65;
      font-size: 15px;
      overflow-x: hidden;
    }

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

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

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部双行导航 */
    .header-wrapper {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: #FFFFFF;
      box-shadow: 0 2px 12px rgba(15, 36, 56, 0.06);
    }

    .top-bar {
      background: var(--primary);
      color: #94A3B8;
      font-size: 12px;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .top-bar-tags span {
      margin-right: 18px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .top-bar-tags span::before {
      content: "•";
      color: var(--accent);
    }

    .main-nav-bar {
      padding: 14px 0;
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
    }

    .brand-logo-badge {
      width: 34px;
      height: 34px;
      background: linear-gradient(135deg, var(--accent) 0%, #FF9248 100%);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 800;
      font-size: 16px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }

    .nav-links a {
      font-weight: 500;
      color: var(--text-main);
      font-size: 15px;
      position: relative;
    }

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

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background-color: var(--accent);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(255, 107, 43, 0.25);
    }

    .btn-primary:hover {
      background-color: var(--accent-hover);
      transform: translateY(-1px);
    }

    .btn-outline {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.4);
      color: #FFFFFF;
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #FFFFFF;
    }

    .btn-secondary {
      background-color: var(--bg-light);
      color: var(--primary);
      border-color: rgba(15, 36, 56, 0.1);
    }

    .btn-secondary:hover {
      background-color: #E2E8F0;
    }

    /* Section 通用样式 */
    section {
      padding: 75px 0;
      position: relative;
    }

    .section-bg-light {
      background-color: var(--bg-light);
    }

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

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

    .section-header.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 50px;
      background: rgba(255, 107, 43, 0.1);
      color: var(--accent);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .section-tag-light {
      background: rgba(255, 255, 255, 0.15);
      color: #FFB38A;
    }

    .section-title {
      font-size: 30px;
      font-weight: 700;
      line-height: 1.35;
      color: inherit;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .section-bg-dark .section-desc {
      color: #94A3B8;
    }

    /* 板块 1: Hero */
    .hero-section {
      position: relative;
      background: linear-gradient(rgba(15, 36, 56, 0.88), rgba(15, 36, 56, 0.88)), url('/assets/images/cbe46530d2a43c6c.jpg') center/cover no-repeat;
      color: #FFFFFF;
      padding: 90px 0 110px 0;
    }

    .hero-content {
      max-width: 880px;
      margin: 0 auto;
      text-align: center;
    }

    .hero-title {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-subtitle {
      font-size: 16px;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 36px;
    }

    .hero-cta-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 45px;
    }

    /* 旗舰店系列导航条叠加大图 */
    .hero-series-bar {
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-md);
      padding: 18px 24px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: left;
    }

    .hero-series-item {
      border-right: 1px solid rgba(255, 255, 255, 0.12);
      padding-right: 12px;
    }

    .hero-series-item:last-child {
      border-right: none;
      padding-right: 0;
    }

    .hero-series-item h4 {
      font-size: 14px;
      color: #FFF;
      margin-bottom: 4px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .hero-series-item p {
      font-size: 12px;
      color: #94A3B8;
      line-height: 1.5;
    }

    /* 板块 2: 指标看板与概览 */
    .dashboard-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }

    .dashboard-screen {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--card-shadow);
      position: relative;
    }

    .dashboard-header-mock {
      display: flex;
      justify-content: space-between;
      border-bottom: 1px solid #EEF2F6;
      padding-bottom: 14px;
      margin-bottom: 18px;
    }

    .dashboard-status-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #ECFDF5;
      color: var(--success);
      padding: 4px 10px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
    }

    .dashboard-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-bottom: 20px;
    }

    .stat-card-mini {
      background: var(--bg-light);
      padding: 14px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--accent);
    }

    .stat-card-mini .num {
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
    }

    .stat-card-mini .label {
      font-size: 12px;
      color: var(--text-muted);
    }

    .protocol-badge-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .protocol-badge {
      font-size: 12px;
      background: #EEF2F6;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      color: var(--primary);
      font-weight: 600;
    }

    /* 板块 3: 核心功能矩阵 (6 卡片栅格) */
    .grid-3-col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .feature-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      transition: all 0.3s ease;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover-shadow);
      border-color: rgba(255, 107, 43, 0.3);
    }

    .feature-icon-box {
      width: 50px;
      height: 50px;
      background: rgba(255, 107, 43, 0.1);
      color: var(--accent);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 18px;
      margin-bottom: 20px;
    }

    .feature-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--primary);
    }

    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .feature-metric-tag {
      font-size: 12px;
      color: var(--accent);
      background: #FFF7ED;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      width: fit-content;
    }

    /* 板块 4: 数字化核心产品模块 (3 大图流) */
    .product-module-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
    }

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

    .product-img-box {
      height: 190px;
      overflow: hidden;
      position: relative;
    }

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

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

    .product-info-box {
      padding: 24px;
    }

    .product-info-box h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--primary);
    }

    .product-info-box p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.6;
    }

    .product-specs-list {
      list-style: none;
      border-top: 1px dashed #E2E8F0;
      padding-top: 14px;
      margin-bottom: 16px;
    }

    .product-specs-list li {
      font-size: 13px;
      color: var(--text-main);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .product-specs-list li::before {
      content: "✓";
      color: var(--success);
      font-weight: bold;
    }

    /* 板块 5: 深色对比理念与数字化全景 */
    .process-timeline-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 36px;
    }

    .process-step-item {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
    }

    .process-step-number {
      font-size: 28px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 10px;
    }

    .process-step-item h4 {
      font-size: 16px;
      color: #FFF;
      margin-bottom: 8px;
    }

    .process-step-item p {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块 6: 场景结果与前后对比 */
    .comparison-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .comparison-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 32px;
      box-shadow: var(--card-shadow);
    }

    .comparison-card.after-opt {
      border-color: rgba(16, 185, 129, 0.3);
      background: linear-gradient(180deg, #FFFFFF 0%, #F0FDF4 100%);
    }

    .comparison-card-badge {
      font-size: 13px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 16px;
      display: inline-block;
    }

    .badge-traditional {
      background: #F1F5F9;
      color: #64748B;
    }

    .badge-digital {
      background: #DCFCE7;
      color: #15803D;
    }

    .comparison-list {
      list-style: none;
      margin-top: 20px;
    }

    .comparison-list li {
      padding: 12px 0;
      border-bottom: 1px solid #EEF2F6;
      display: flex;
      justify-content: space-between;
      font-size: 14px;
    }

    .comparison-list li:last-child {
      border-bottom: none;
    }

    /* 板块 7: 关键效能数据条 */
    .metric-strip-section {
      background: var(--primary-light);
      color: #FFFFFF;
      padding: 50px 0;
    }

    .metric-strip-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .metric-strip-item {
      border-right: 1px solid rgba(255, 255, 255, 0.1);
      padding: 0 16px;
    }

    .metric-strip-item:last-child {
      border-right: none;
    }

    .metric-strip-item .val {
      font-size: 38px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 6px;
    }

    .metric-strip-item .name {
      font-size: 14px;
      color: #E2E8F0;
      font-weight: 500;
    }

    .metric-strip-item .desc {
      font-size: 12px;
      color: #94A3B8;
      margin-top: 4px;
    }

    /* 板块 8: 标杆客户评价 */
    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-quote {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid #F1F5F9;
      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);
    }

    .testimonial-meta h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--primary);
    }

    .testimonial-meta p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 9: 资讯与实践指南 */
    .article-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--card-shadow);
    }

    .article-thumb {
      height: 160px;
    }

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

    .article-body {
      padding: 20px;
    }

    .article-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 6px;
    }

    .article-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
      color: var(--primary);
    }

    .article-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 10: 平台保障 */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .guarantee-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      text-align: center;
      box-shadow: var(--card-shadow);
    }

    .guarantee-icon {
      width: 46px;
      height: 46px;
      background: rgba(16, 185, 129, 0.1);
      color: var(--success);
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 14px;
    }

    .guarantee-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--primary);
    }

    .guarantee-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 11: FAQ 手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--primary);
      user-select: none;
    }

    .faq-question:hover {
      background-color: #F8FAFC;
    }

    .faq-question::after {
      content: "+";
      font-size: 20px;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-question::after {
      content: "-";
      transform: rotate(180deg);
      color: var(--accent);
    }

    .faq-answer {
      padding: 0 22px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background-color: #FFFFFF;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      padding: 0 22px 18px 22px;
      max-height: 300px;
    }

    /* 板块 12: 转化表单 */
    .cta-form-container {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
      border-radius: var(--radius-lg);
      padding: 48px;
      color: #FFFFFF;
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 40px;
      align-items: center;
    }

    .cta-form-info h3 {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .cta-form-info p {
      color: #CBD5E1;
      font-size: 15px;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .consult-hotline {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 18px;
      font-weight: 700;
      color: var(--accent);
    }

    .lead-form {
      background: #FFFFFF;
      padding: 30px;
      border-radius: var(--radius-md);
      color: var(--text-main);
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--primary);
    }

    .form-control {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(255, 107, 43, 0.15);
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    /* 全局页脚 */
    .site-footer {
      background: #091724;
      color: #94A3B8;
      padding: 60px 0 24px 0;
      font-size: 13px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 18px;
      margin-bottom: 14px;
    }

    .footer-brand p {
      line-height: 1.65;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      color: #FFFFFF;
      font-size: 15px;
      margin-bottom: 16px;
      font-weight: 600;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 8px;
    }

    .footer-links a:hover {
      color: var(--accent);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .dashboard-grid {
        grid-template-columns: 1fr;
      }
      .grid-3-col {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline-grid,
      .metric-strip-grid,
      .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
      .metric-strip-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 16px;
      }
      .hero-series-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-series-bar {
        grid-template-columns: 1fr;
      }
      .grid-3-col {
        grid-template-columns: 1fr;
      }
      .comparison-wrapper {
        grid-template-columns: 1fr;
      }
      .process-timeline-grid,
      .metric-strip-grid,
      .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .cta-form-container {
        grid-template-columns: 1fr;
        padding: 24px;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }