/* roulang page: index */
:root {
      --primary-color: #4F46E5;
      --primary-hover: #4338CA;
      --secondary-color: #06B6D4;
      --dark-slate: #0B0F19;
      --card-bg: #FFFFFF;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.05);
      --shadow-card: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
      --shadow-hover: 0 20px 30px -8px rgba(15, 23, 42, 0.12);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-body);
      background-color: var(--bg-light);
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4, h5, h6 {
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.25;
      margin-bottom: 0.75rem;
    }

    p {
      margin-bottom: 1.25rem;
    }

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

    /* 工具栏导航 */
    .top-sub-bar {
      background-color: #070B13;
      font-size: 0.8125rem;
      color: #94A3B8;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 6px 0;
    }
    .status-pulse {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      margin-right: 6px;
      box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25);
    }

    .main-navbar {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
      position: sticky;
      top: 0;
      z-index: 1030;
      padding: 12px 0;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main) !important;
    }
    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-size: 1.15rem;
    }
    .navbar-nav .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-body);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
    }
    .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
      color: var(--primary-color);
      background-color: rgba(79, 70, 229, 0.05);
    }
    .nav-toolbar-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .notify-badge-btn {
      position: relative;
      background: #F1F5F9;
      border: 1px solid var(--border-color);
      color: var(--text-body);
      width: 38px;
      height: 38px;
      border-radius: 8px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .notify-badge-btn .badge-dot {
      position: absolute;
      top: 6px;
      right: 6px;
      width: 8px;
      height: 8px;
      background: #EF4444;
      border-radius: 50%;
    }

    /* 按钮规范 */
    .btn-indigo {
      background-color: var(--primary-color);
      color: #FFFFFF !important;
      font-weight: 600;
      border: 1px solid var(--primary-color);
      padding: 10px 24px;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
      min-height: 44px;
    }
    .btn-indigo:hover {
      background-color: var(--primary-hover);
      border-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 16px rgba(79, 70, 229, 0.25);
    }
    .btn-outline-custom {
      border: 1px solid var(--border-color);
      background: #FFFFFF;
      color: var(--text-main);
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      min-height: 44px;
    }
    .btn-outline-custom:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
    }

    /* 卡片与网格系统通用 */
    .section-wrap {
      padding: 85px 0;
      position: relative;
    }
    .section-bg-white {
      background-color: #FFFFFF;
    }
    .section-bg-light {
      background-color: #F8FAFC;
    }
    .section-bg-dark {
      background-color: var(--dark-slate);
      color: #E2E8F0;
    }
    .section-badge {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--primary-color);
      background: rgba(79, 70, 229, 0.08);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-header {
      margin-bottom: 50px;
    }
    .section-header h2 {
      font-size: 2.15rem;
      margin-bottom: 14px;
    }
    .section-header p {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 780px;
      margin-bottom: 0;
    }

    .custom-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      overflow: hidden;
      height: 100%;
    }
    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #CBD5E1;
    }

    /* 斜切色块首屏 (Hero) */
    .hero-angled-section {
      position: relative;
      background: linear-gradient(135deg, #0B0F19 0%, #171E31 55%, #241D49 100%);
      color: #FFFFFF;
      padding: 100px 0 160px;
      overflow: hidden;
    }
    .hero-angled-section::after {
      content: "";
      position: absolute;
      bottom: -1px;
      left: 0;
      width: 100%;
      height: 90px;
      background: var(--bg-light);
      clip-path: polygon(0 100%, 100% 100%, 100% 0);
    }
    .hero-bg-layer {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/339dcce593ed1592.png');
      background-size: cover;
      background-position: center;
      opacity: 0.22;
      mix-blend-mode: overlay;
      pointer-events: none;
    }
    .hero-tagline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(79, 70, 229, 0.25);
      border: 1px solid rgba(79, 70, 229, 0.4);
      padding: 6px 14px;
      border-radius: 30px;
      color: #A5B4FC;
      font-size: 0.875rem;
      margin-bottom: 24px;
    }
    .hero-angled-section h1 {
      font-size: clamp(2.4rem, 4.5vw, 3.4rem);
      color: #FFFFFF;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 24px;
      line-height: 1.2;
    }
    .hero-desc {
      font-size: 1.125rem;
      line-height: 1.85;
      color: #CBD5E1;
      max-width: 820px;
      margin-bottom: 35px;
    }
    .hero-telemetry-bar {
      margin-top: 45px;
      background: rgba(15, 23, 42, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 16px 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 30px;
    }
    .hero-telemetry-item {
      display: flex;
      flex-direction: column;
    }
    .hero-telemetry-label {
      font-size: 0.75rem;
      text-transform: uppercase;
      color: #94A3B8;
      letter-spacing: 0.05em;
    }
    .hero-telemetry-val {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--secondary-color);
    }

    /* 指标看板 */
    .metric-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .metric-box::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
      opacity: 0;
      transition: var(--transition);
    }
    .metric-box:hover::before {
      opacity: 1;
    }
    .metric-number {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1;
      margin-bottom: 8px;
    }
    .metric-unit {
      font-size: 1.15rem;
      font-weight: 600;
      color: var(--primary-color);
    }
    .metric-title {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    /* 资料目录 (Resource Directory) */
    .catalog-item-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: #FFFFFF;
      padding: 24px;
      display: flex;
      gap: 18px;
      transition: var(--transition);
    }
    .catalog-item-card:hover {
      border-color: var(--primary-color);
      transform: translateY(-3px);
      box-shadow: var(--shadow-card);
    }
    .catalog-icon-box {
      flex-shrink: 0;
      width: 48px;
      height: 48px;
      background: rgba(79, 70, 229, 0.08);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-color);
      font-size: 1.35rem;
    }

    /* 架构图解展示 */
    .tech-panel-frame {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: #0F172A;
      overflow: hidden;
      position: relative;
    }
    .tech-panel-header {
      padding: 12px 18px;
      background: #1E293B;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .tech-panel-dots {
      display: flex;
      gap: 6px;
    }
    .tech-panel-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #475569;
    }
    .tech-panel-body {
      padding: 24px;
      color: #94A3B8;
      font-family: SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.85rem;
      line-height: 1.7;
    }

    /* 对比矩阵表 */
    .comparison-table-wrapper {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
      overflow-x: auto;
    }
    .table-modern {
      width: 100%;
      margin-bottom: 0;
      border-collapse: collapse;
    }
    .table-modern th, .table-modern td {
      padding: 20px 24px;
      vertical-align: middle;
      border-bottom: 1px solid var(--border-color);
    }
    .table-modern thead th {
      background: #F8FAFC;
      font-weight: 700;
      color: var(--text-main);
      font-size: 0.95rem;
    }
    .col-highlight {
      background: rgba(79, 70, 229, 0.03);
      font-weight: 600;
      color: var(--primary-color);
    }

    /* 服务矩阵方案卡片 */
    .tier-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      color: #06B6D4;
      background: rgba(6, 182, 212, 0.1);
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .tier-price {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .tier-price small {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 400;
    }
    .tier-list {
      list-style: none;
      padding: 0;
      margin: 20px 0 28px;
    }
    .tier-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.925rem;
      margin-bottom: 12px;
      color: var(--text-body);
    }
    .tier-list li i {
      color: #10B981;
      font-size: 1.1rem;
    }

    /* 典型行业与里程碑双栏 */
    .case-story-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: #FFFFFF;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      height: 100%;
    }
    .case-story-img {
      height: 220px;
      width: 100%;
      object-fit: cover;
    }
    .case-story-body {
      padding: 24px;
    }
    .case-stat-pill {
      background: #F1F5F9;
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
      display: inline-block;
      margin-bottom: 14px;
    }

    /* FAQ 手风琴样式重写 */
    .accordion-modern .accordion-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md) !important;
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .accordion-modern .accordion-button {
      font-weight: 600;
      font-size: 1.05rem;
      color: var(--text-main);
      padding: 20px 24px;
      background: #FFFFFF;
      box-shadow: none;
    }
    .accordion-modern .accordion-button:not(.collapsed) {
      color: var(--primary-color);
      background: #F8FAFC;
    }
    .accordion-modern .accordion-body {
      padding: 20px 24px 24px;
      color: var(--text-body);
      font-size: 0.95rem;
      line-height: 1.8;
      background: #FFFFFF;
    }

    /* 底部收口表单 Banner */
    .conversion-banner {
      background: linear-gradient(135deg, #1E1B4B 0%, #312E81 50%, #4338CA 100%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #FFFFFF;
      box-shadow: 0 20px 40px rgba(49, 46, 129, 0.3);
      position: relative;
      overflow: hidden;
    }
    .conversion-banner::before {
      content: "";
      position: absolute;
      top: -50%;
      right: -20%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(6, 182, 212, 0.25) 0%, transparent 70%);
      pointer-events: none;
    }

    /* 页脚 */
    footer.site-footer {
      background-color: #070B13;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.925rem;
    }
    footer.site-footer h5 {
      color: #FFFFFF;
      font-size: 1rem;
      margin-bottom: 20px;
      font-weight: 600;
    }
    footer.site-footer ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    footer.site-footer ul li {
      margin-bottom: 10px;
    }
    footer.site-footer ul li a {
      color: #94A3B8;
    }
    footer.site-footer ul li a:hover {
      color: #FFFFFF;
    }
    .footer-bottom-bar {
      margin-top: 50px;
      padding-top: 25px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.8125rem;
    }

    @media (max-width: 991px) {
      .hero-angled-section {
        padding: 70px 0 120px;
      }
      .conversion-banner {
        padding: 40px 24px;
      }
      .section-wrap {
        padding: 60px 0;
      }
    }