/* roulang page: index */
:root {
      --bg-dark: #0B0C10;
      --bg-surface: #14161D;
      --bg-surface-light: #1E222D;
      --bg-light: #F4F5F8;
      --bg-card-light: #FFFFFF;
      --primary: #7C3AED;
      --primary-hover: #6D28D9;
      --primary-light: rgba(124, 58, 237, 0.12);
      --accent-green: #10B981;
      --accent-rose: #F43F5E;
      --text-main-dark: #F8FAFC;
      --text-muted-dark: #94A3B8;
      --text-main-light: #0F172A;
      --text-muted-light: #475569;
      --border-dark: rgba(255, 255, 255, 0.08);
      --border-light: rgba(15, 23, 42, 0.08);
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --radius-xl: 16px;
      --shadow-dark: 0 8px 30px -4px rgba(124, 58, 237, 0.25);
      --shadow-light: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --font-mono: "JetBrains Mono", "Fira Code", monospace;
    }

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

    body {
      font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
      background-color: var(--bg-dark);
      color: var(--text-muted-dark);
      line-height: 1.75;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4, h5, h6 {
      color: var(--text-main-dark);
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 0.75rem;
    }

    p {
      margin-bottom: 1.25rem;
    }

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

    .font-mono {
      font-family: var(--font-mono);
    }

    /* 顶部导航 */
    .site-header {
      position: fixed;
      top: 0;
      width: 100%;
      z-index: 1030;
      background: rgba(11, 12, 16, 0.75);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-dark);
      transition: all 0.3s ease;
    }

    .site-header.scrolled {
      background: rgba(11, 12, 16, 0.96);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    }

    .top-bar {
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 6px 0;
      color: var(--text-muted-dark);
    }

    .nav-brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 1.25rem;
      color: var(--text-main-dark);
    }

    .nav-brand-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary) 0%, #4F46E5 100%);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
    }

    .main-navbar .nav-link {
      color: var(--text-muted-dark);
      font-size: 0.9375rem;
      font-weight: 500;
      padding: 0.5rem 0.85rem;
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
    }

    .main-navbar .nav-link:hover,
    .main-navbar .nav-link.active {
      color: var(--text-main-dark);
      background-color: rgba(255, 255, 255, 0.05);
    }

    /* 按钮样式重塑 */
    .btn-cyber {
      background: linear-gradient(135deg, var(--primary) 0%, #4F46E5 100%);
      color: #FFFFFF;
      font-weight: 600;
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-md);
      padding: 0.625rem 1.35rem;
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
    }

    .btn-cyber:hover {
      color: #FFFFFF;
      box-shadow: 0 4px 20px rgba(124, 58, 237, 0.45);
      transform: translateY(-2px);
    }

    .btn-outline-cyber {
      background: transparent;
      color: var(--text-main-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 0.625rem 1.35rem;
      transition: all 0.3s ease;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .btn-outline-cyber:hover {
      background: rgba(255, 255, 255, 0.05);
      border-color: rgba(255, 255, 255, 0.3);
      color: #FFFFFF;
      transform: translateY(-2px);
    }

    /* 徽章与标签 */
    .badge-status {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.25rem 0.625rem;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .badge-status-green {
      background: rgba(16, 185, 129, 0.12);
      color: var(--accent-green);
      border: 1px solid rgba(16, 185, 129, 0.25);
    }

    .badge-status-rose {
      background: rgba(244, 63, 94, 0.12);
      color: var(--accent-rose);
      border: 1px solid rgba(244, 63, 94, 0.25);
    }

    .badge-status-purple {
      background: var(--primary-light);
      color: #A78BFA;
      border: 1px solid rgba(167, 139, 250, 0.3);
    }

    /* 板块通用容器 */
    .sec-dark {
      background-color: var(--bg-dark);
      padding: 6.5rem 0;
      position: relative;
    }

    .sec-surface {
      background-color: var(--bg-surface);
      padding: 6.5rem 0;
      position: relative;
    }

    .sec-light {
      background-color: var(--bg-light);
      color: var(--text-muted-light);
      padding: 6.5rem 0;
      position: relative;
    }

    .sec-light h2, .sec-light h3, .sec-light h4, .sec-light h5, .sec-light strong {
      color: var(--text-main-light);
    }

    .sec-title-tag {
      font-family: var(--font-mono);
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--primary);
      margin-bottom: 0.75rem;
      display: block;
    }

    .sec-title {
      font-size: 2.25rem;
      line-height: 1.3;
      margin-bottom: 1.25rem;
    }

    .sec-desc {
      font-size: 1.0625rem;
      max-width: 680px;
      line-height: 1.8;
    }

    /* 卡片体系 */
    .card-dark {
      background-color: var(--bg-surface);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 2rem;
      transition: all 0.3s ease;
      height: 100%;
    }

    .card-dark:hover {
      border-color: rgba(124, 58, 237, 0.4);
      transform: translateY(-4px);
      box-shadow: var(--shadow-dark);
    }

    .card-light {
      background-color: var(--bg-card-light);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 2rem;
      box-shadow: var(--shadow-light);
      transition: all 0.3s ease;
      height: 100%;
    }

    .card-light:hover {
      transform: translateY(-4px);
      box-shadow: 0 10px 30px -4px rgba(15, 23, 42, 0.12);
      border-color: rgba(124, 58, 237, 0.3);
    }

    /* Hero 大图轮播 */
    .hero-carousel-wrap {
      padding-top: 96px;
      min-height: 88vh;
      background: var(--bg-dark);
      position: relative;
    }

    .hero-slide-item {
      min-height: calc(88vh - 96px);
      display: flex;
      align-items: center;
      position: relative;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }

    .hero-mask {
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 60% 40%, rgba(11, 12, 16, 0.7) 0%, rgba(11, 12, 16, 0.94) 85%);
      z-index: 1;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      padding: 4rem 0;
    }

    .hero-title {
      font-size: 3.25rem;
      line-height: 1.2;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 1.5rem;
    }

    .hero-subtitle {
      font-size: 1.1875rem;
      line-height: 1.85;
      color: #CBD5E1;
      max-width: 760px;
      margin-bottom: 2.25rem;
    }

    .engine-badge-strip {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      padding-top: 2rem;
      border-top: 1px solid var(--border-dark);
      margin-top: 2.5rem;
    }

    .engine-tag {
      font-family: var(--font-mono);
      font-size: 0.8125rem;
      color: #94A3B8;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-dark);
      padding: 6px 14px;
      border-radius: var(--radius-sm);
    }

    /* 痛点对比矩阵 */
    .pain-card {
      border-left: 3px solid var(--accent-rose);
      background: #FFFFFF;
      padding: 1.5rem;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-light);
      margin-bottom: 1.25rem;
    }

    /* 规格参数表 */
    .specs-table {
      width: 100%;
      border-collapse: collapse;
      font-family: var(--font-mono);
      font-size: 0.875rem;
    }

    .specs-table th, .specs-table td {
      padding: 12px 16px;
      border-bottom: 1px solid var(--border-dark);
      text-align: left;
    }

    .specs-table th {
      color: #E2E8F0;
      background: rgba(255, 255, 255, 0.02);
    }

    .specs-table td {
      color: #94A3B8;
    }

    /* 工作流步骤条 */
    .flow-step-box {
      position: relative;
      background: var(--bg-surface);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 2rem 1.5rem;
      height: 100%;
      transition: all 0.3s ease;
    }

    .flow-step-box:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
    }

    .flow-step-num {
      font-family: var(--font-mono);
      font-size: 2.5rem;
      font-weight: 800;
      color: rgba(124, 58, 237, 0.25);
      line-height: 1;
      margin-bottom: 1rem;
    }

    /* 数据看板大条目 */
    .metric-value {
      font-family: var(--font-mono);
      font-size: 3.25rem;
      font-weight: 800;
      color: var(--accent-green);
      line-height: 1;
      margin-bottom: 0.5rem;
    }

    /* 手风琴自定义 */
    .accordion-custom .accordion-item {
      background-color: var(--bg-surface);
      border: 1px solid var(--border-dark);
      margin-bottom: 1rem;
      border-radius: var(--radius-md) !important;
      overflow: hidden;
    }

    .accordion-custom .accordion-button {
      background-color: var(--bg-surface);
      color: var(--text-main-dark);
      font-weight: 600;
      box-shadow: none;
      padding: 1.25rem 1.5rem;
      min-height: 52px;
    }

    .accordion-custom .accordion-button:not(.collapsed) {
      color: #C4B5FD;
      background-color: rgba(124, 58, 237, 0.08);
      border-bottom: 1px solid var(--border-dark);
    }

    .accordion-custom .accordion-body {
      color: var(--text-muted-dark);
      padding: 1.25rem 1.5rem;
      line-height: 1.8;
    }

    .accordion-custom .accordion-button::after {
      filter: invert(1);
    }

    /* 底部收口表单容器 */
    .cta-container {
      background: linear-gradient(135deg, rgba(124, 58, 237, 0.2) 0%, rgba(20, 22, 29, 0.95) 100%);
      border: 1px solid rgba(124, 58, 237, 0.35);
      border-radius: var(--radius-xl);
      padding: 3.5rem;
      box-shadow: var(--shadow-dark);
    }

    .form-control-cyber {
      background: rgba(11, 12, 16, 0.7);
      border: 1px solid var(--border-dark);
      color: #FFFFFF;
      padding: 0.75rem 1rem;
      border-radius: var(--radius-md);
      min-height: 44px;
    }

    .form-control-cyber:focus {
      background: rgba(11, 12, 16, 0.9);
      border-color: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.25);
      outline: none;
    }

    /* 页脚 */
    .site-footer {
      background-color: #07080A;
      color: #64748B;
      padding: 5rem 0 2rem;
      border-top: 1px solid var(--border-dark);
      font-size: 0.875rem;
    }

    .site-footer h4 {
      color: #F8FAFC;
      font-size: 1rem;
      margin-bottom: 1.25rem;
    }

    .footer-links-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .footer-links-list li {
      margin-bottom: 0.65rem;
    }

    .footer-links-list a:hover {
      color: #C4B5FD;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      margin-top: 3.5rem;
      padding-top: 1.5rem;
      font-size: 0.8125rem;
    }

    /* 响应式调整 */
    @media (max-width: 991px) {
      .hero-title {
        font-size: 2.35rem;
      }
      .sec-title {
        font-size: 1.85rem;
      }
      .cta-container {
        padding: 2rem 1.5rem;
      }
      .site-header {
        position: fixed;
      }
    }

    @media (max-width: 575px) {
      .hero-title {
        font-size: 1.95rem;
      }
      .metric-value {
        font-size: 2.35rem;
      }
    }