/* roulang page: index */
:root {
      --primary: #0D8267;
      --primary-dark: #09634E;
      --accent: #FF7A1A;
      --accent-hover: #E5680E;
      --bg-page: #F7F9FA;
      --bg-card: #FFFFFF;
      --text-main: #142321;
      --text-muted: #5C6B67;
      --border-color: #E2E8E6;
      --dark-section: #091E1A;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-full: 999px;
      --shadow-sm: 0 4px 18px rgba(9, 30, 26, 0.05);
      --shadow-hover: 0 12px 30px rgba(13, 130, 103, 0.12);
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      padding: 0;
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover, a:focus { color: var(--primary); }
    img { max-width: 100%; height: auto; display: block; }

    /* 顶部服务条与导航 */
    .top-utility-bar {
      background: #061714;
      color: #9BB3AD;
      font-size: 0.825rem;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-utility-bar .grid-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .utility-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #C3D9D3;
    }
    .utility-tag span {
      background: rgba(13, 130, 103, 0.25);
      color: #4EE2BC;
      padding: 2px 8px;
      border-radius: var(--radius-full);
      font-size: 0.75rem;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      box-shadow: 0 2px 14px rgba(9, 30, 26, 0.06);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 12px 1.25rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .brand-logo-badge {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      font-weight: 900;
      font-size: 1.1rem;
    }

    /* 分段标签导航 */
    .segmented-nav-track {
      display: flex;
      background: #EBF1EF;
      padding: 4px;
      border-radius: var(--radius-full);
      gap: 2px;
    }
    .segmented-chip {
      padding: 6px 14px;
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-full);
      white-space: nowrap;
      transition: var(--transition);
    }
    .segmented-chip:hover, .segmented-chip.active {
      background: #FFFFFF;
      color: var(--primary);
      box-shadow: 0 2px 8px rgba(9, 30, 26, 0.08);
    }

    .btn-cta-nav {
      background: var(--accent);
      color: #FFFFFF !important;
      font-weight: 600;
      font-size: 0.875rem;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      display: inline-block;
      box-shadow: 0 4px 12px rgba(255, 122, 26, 0.25);
    }
    .btn-cta-nav:hover {
      background: var(--accent-hover);
      transform: translateY(-1px);
    }

    /* 全局通用区块 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: #FFFFFF;
    }
    .section-wrap.dark-theme {
      background-color: var(--dark-section);
      color: #FFFFFF;
    }
    .custom-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.25rem;
    }

    .section-header {
      margin-bottom: 48px;
      text-align: left;
    }
    .section-header.center-mode {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-chip {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--primary);
      background: rgba(13, 130, 103, 0.1);
      padding: 4px 12px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .dark-theme .section-chip {
      background: rgba(78, 226, 188, 0.15);
      color: #4EE2BC;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .dark-theme .section-title {
      color: #FFFFFF;
    }
    .section-intro {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 780px;
      line-height: 1.8;
      margin-bottom: 0;
    }
    .dark-theme .section-intro {
      color: #A1B6B1;
    }

    /* 现代卡片 */
    .clean-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .clean-card:hover {
      box-shadow: var(--shadow-hover);
      border-color: rgba(13, 130, 103, 0.3);
      transform: translateY(-4px);
    }

    /* 1. Hero 体验展台 */
    .hero-booking-zone {
      background: #091E1A url('/assets/images/00052dc5ca947f1a.jpg') center center/cover no-repeat;
      position: relative;
      padding: 90px 0 110px;
      color: #FFFFFF;
    }
    .hero-booking-zone::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(9, 30, 26, 0.95) 0%, rgba(9, 30, 26, 0.85) 55%, rgba(9, 30, 26, 0.65) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-title {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      color: #FFFFFF;
      margin-bottom: 20px;
    }
    .hero-lead {
      font-size: 1.075rem;
      color: #C7DDD7;
      line-height: 1.85;
      margin-bottom: 32px;
      max-width: 620px;
    }
    .hero-features-list {
      list-style: none;
      margin: 0 0 32px 0;
      padding: 0;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .hero-features-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      color: #E0EFEA;
      background: rgba(255, 255, 255, 0.08);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      border: 1px solid rgba(255, 255, 255, 0.12);
    }
    .hero-features-list li span.dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
    }

    /* Hero 右侧预约到店/方案演练框 */
    .booking-box {
      background: #FFFFFF;
      border-radius: 12px;
      padding: 32px;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
      color: var(--text-main);
    }
    .booking-box h3 {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .booking-box p {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .booking-form-item {
      margin-bottom: 14px;
    }
    .booking-form-item label {
      display: block;
      font-size: 0.8rem;
      font-weight: 600;
      margin-bottom: 4px;
      color: var(--text-main);
    }
    .booking-form-item input,
    .booking-form-item select {
      width: 100%;
      height: 42px;
      border: 1px solid #D1DBD8;
      border-radius: var(--radius-sm);
      padding: 8px 12px;
      font-size: 0.9rem;
      background: #FAFBFB;
    }
    .booking-form-item input:focus,
    .booking-form-item select:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(13, 130, 103, 0.15);
    }
    .btn-booking-submit {
      width: 100%;
      background: var(--primary);
      color: #FFFFFF;
      font-weight: 600;
      border: none;
      border-radius: var(--radius-sm);
      height: 46px;
      cursor: pointer;
      transition: var(--transition);
      font-size: 0.95rem;
      margin-top: 6px;
    }
    .btn-booking-submit:hover {
      background: var(--primary-dark);
    }

    /* 2. 痛点剖析区 */
    .pain-card {
      border-top: 4px solid #D64545;
      position: relative;
    }
    .pain-icon-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 8px;
      background: #FEECEC;
      color: #D64545;
      font-weight: 700;
      font-size: 1.1rem;
      margin-bottom: 16px;
    }
    .pain-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    /* 3. 系统架构全景 */
    .arch-preview-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 20px;
    }
    .spec-table th, .spec-table td {
      padding: 12px 14px;
      font-size: 0.875rem;
      border-bottom: 1px solid #EBEFEF;
      text-align: left;
    }
    .spec-table th {
      background: #F2F6F5;
      color: var(--text-main);
      font-weight: 600;
    }

    /* 4. 六维核心优势 */
    .advantage-box {
      border-left: 4px solid var(--primary);
    }
    .advantage-box .adv-num {
      font-size: 0.8rem;
      font-weight: 800;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 6px;
    }
    .advantage-box h4 {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    /* 5. 核心硬件与产品矩阵 */
    .product-img-box {
      border-radius: var(--radius-sm);
      overflow: hidden;
      margin-bottom: 16px;
      aspect-ratio: 16 / 10;
      background: #F0F4F3;
    }
    .product-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .clean-card:hover .product-img-box img {
      transform: scale(1.04);
    }
    .product-param-tag {
      display: inline-block;
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: #EDF4F2;
      color: #0E6B56;
      margin-right: 6px;
      margin-bottom: 6px;
    }

    /* 6. 标准化实施流程 */
    .step-track-item {
      position: relative;
      padding-left: 28px;
      border-left: 2px dashed #0D8267;
      padding-bottom: 32px;
    }
    .step-track-item:last-child {
      border-left: 2px solid transparent;
      padding-bottom: 0;
    }
    .step-dot {
      position: absolute;
      left: -9px;
      top: 0;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--accent);
      border: 3px solid #FFFFFF;
      box-shadow: 0 0 0 2px var(--accent);
    }

    /* 7. 深色案例大卡片 */
    .case-dark-card {
      background: #112B26;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 24px;
      transition: var(--transition);
    }
    .case-dark-card:hover {
      border-color: #4EE2BC;
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    }
    .case-body-pad {
      padding: 36px;
    }

    /* 8. 成果数据统计条 */
    .metric-data-card {
      text-align: center;
      padding: 24px 16px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .metric-number {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      font-feature-settings: "tnum";
      margin-bottom: 6px;
    }
    .metric-number span {
      font-size: 1.25rem;
      font-weight: 600;
      color: var(--accent);
      margin-left: 4px;
    }
    .metric-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin: 0;
    }

    /* 9. 典型用户故事 */
    .story-card-layout {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .story-content-wrap {
      padding: 40px;
    }
    .story-author-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid #EEF3F1;
    }
    .story-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #0D8267;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    /* 10. 适用行业与场景矩阵 */
    .scenario-badge-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .scenario-badge-item:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
    }

    /* 11. 客户证言网格 */
    .quote-box {
      position: relative;
    }
    .quote-mark {
      font-size: 3rem;
      line-height: 1;
      color: rgba(13, 130, 103, 0.2);
      font-family: serif;
    }
    .star-rating {
      color: #FFA800;
      margin-bottom: 12px;
      font-size: 1rem;
    }

    /* 12. 技术资讯与研读 */
    .news-card-img {
      aspect-ratio: 16 / 9;
      overflow: hidden;
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
    }
    .news-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .clean-card:hover .news-card-img img {
      transform: scale(1.05);
    }
    .news-date {
      font-size: 0.775rem;
      color: #8C9C98;
      margin-bottom: 8px;
    }

    /* 13. FAQ 手风琴 */
    .accordion-item.is-active .accordion-title {
      color: var(--primary);
      font-weight: 700;
    }
    .accordion-title {
      font-size: 1.05rem;
      padding: 18px 24px;
      border: 1px solid var(--border-color);
      margin-bottom: 8px;
      border-radius: var(--radius-sm);
      background: #FFFFFF;
    }
    .accordion-content {
      border: 1px solid var(--border-color);
      border-top: none;
      padding: 20px 24px;
      margin-top: -8px;
      margin-bottom: 12px;
      background: #FCFDFD;
      border-radius: 0 0 var(--radius-sm) var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    /* 14. 转化表单 */
    .cta-banner-section {
      background: linear-gradient(135deg, #0D8267 0%, #09634E 100%);
      color: #FFFFFF;
      padding: 70px 0;
      position: relative;
      overflow: hidden;
    }
    .cta-box-inner {
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 12px;
      padding: 36px;
    }

    /* 页脚 */
    .site-footer {
      background: #081714;
      color: #8C9C98;
      font-size: 0.875rem;
      padding: 60px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .site-footer h5 {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .site-footer ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .site-footer ul li {
      margin-bottom: 10px;
    }
    .site-footer a:hover {
      color: #4EE2BC;
    }
    .footer-divider {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin: 40px 0 24px;
      padding-top: 20px;
    }

    /* 移动端汉堡与自适应 */
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    @media (max-width: 1024px) {
      .segmented-nav-track {
        display: none;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .booking-box {
        margin-top: 30px;
      }
    }

    @media (max-width: 768px) {
      .top-utility-bar {
        display: none;
      }
      .section-wrap {
        padding: 50px 0;
      }
      .hero-booking-zone {
        padding: 50px 0 70px;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .btn-cta-nav {
        display: none;
      }
    }

    .mobile-nav-panel {
      display: none;
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
      padding: 16px 20px;
    }
    .mobile-nav-panel.open {
      display: block;
    }
    .mobile-nav-link {
      display: block;
      padding: 10px 0;
      font-size: 0.95rem;
      font-weight: 500;
      border-bottom: 1px solid #EEF3F1;
      color: var(--text-main);
    }