/* roulang page: index */
:root {
      --bg-dark: #0B0E14;
      --bg-surface: #131822;
      --bg-surface-elevated: #1B2232;
      --primary-purple: #7B2CBF;
      --primary-purple-hover: #9D4EDD;
      --cyan-neon: #00F5D4;
      --orange-accent: #FF7B00;
      --text-main: #E2E8F0;
      --text-muted: #94A3B8;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-highlight: rgba(0, 245, 212, 0.35);
      --font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    }

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

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: var(--font-family);
      line-height: 1.65;
      overflow-x: hidden;
    }

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

    /* 顶部微型状态条与主导航 */
    .top-meta-bar {
      background-color: #06080C;
      border-bottom: 1px solid var(--border-subtle);
      font-size: 0.8125rem;
      color: var(--text-muted);
      padding: 6px 0;
    }
    .top-meta-bar a:hover {
      color: var(--cyan-neon);
    }

    .main-navbar {
      background-color: rgba(11, 14, 20, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
      padding: 14px 0;
      transition: background-color 0.3s;
    }
    .navbar-brand-title {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #FFFFFF;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .navbar-brand-title .badge-icon {
      width: 28px;
      height: 28px;
      background: linear-gradient(135deg, var(--primary-purple), var(--cyan-neon));
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      color: #000;
    }
    .nav-link {
      color: var(--text-main) !important;
      font-weight: 500;
      font-size: 0.95rem;
      padding: 6px 14px !important;
      border-radius: 4px;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--cyan-neon) !important;
      background-color: rgba(255, 255, 255, 0.04);
    }

    /* 面包屑导航增强 */
    .breadcrumb-nav-wrapper {
      background-color: #0E121A;
      border-bottom: 1px solid var(--border-subtle);
      padding: 10px 0;
      font-size: 0.825rem;
    }
    .breadcrumb-nav-wrapper .breadcrumb {
      margin-bottom: 0;
    }
    .breadcrumb-item a {
      color: var(--text-muted);
    }
    .breadcrumb-item.active {
      color: var(--cyan-neon);
    }
    .breadcrumb-item + .breadcrumb-item::before {
      color: rgba(255, 255, 255, 0.2);
    }

    /* 通用区块与组件 */
    .content-section {
      padding: 90px 0;
      position: relative;
    }
    .content-section.bg-elevated {
      background-color: var(--bg-surface);
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--cyan-neon);
      background-color: rgba(0, 245, 212, 0.08);
      border: 1px solid rgba(0, 245, 212, 0.25);
      border-radius: 4px;
      padding: 4px 12px;
      font-size: 0.8125rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 16px;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: #FFFFFF;
      line-height: 1.25;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .section-lead {
      color: var(--text-muted);
      font-size: 1.05rem;
      max-width: 820px;
      margin-bottom: 40px;
    }

    /* 按钮定制 */
    .btn-epic {
      background: linear-gradient(135deg, var(--primary-purple), #9D4EDD);
      color: #FFFFFF;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: 6px;
      border: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 4px 18px rgba(123, 44, 191, 0.35);
    }
    .btn-epic:hover {
      background: linear-gradient(135deg, #8E3CD4, #AF63EA);
      color: #FFFFFF;
      transform: translateY(-2px);
      box-shadow: 0 6px 22px rgba(123, 44, 191, 0.5);
    }
    .btn-outline-cyan {
      border: 1px solid var(--cyan-neon);
      color: var(--cyan-neon);
      background: transparent;
      font-weight: 600;
      padding: 11px 26px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-outline-cyan:hover {
      background-color: var(--cyan-neon);
      color: #06080C;
    }

    /* 卡片体系 */
    .base-card {
      background-color: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: 10px;
      padding: 28px;
      transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
      height: 100%;
    }
    .base-card:hover {
      border-color: var(--border-highlight);
      transform: translateY(-4px);
      box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
    }

    /* Hero 板块：沉浸视觉海报模式 */
    .hero-stage {
      position: relative;
      background: linear-gradient(180deg, rgba(11, 14, 20, 0.6) 0%, rgba(11, 14, 20, 0.96) 100%),
                  url('/assets/images/a01f7733a680d4af.webp') center/cover no-repeat;
      padding: 110px 0 90px;
      border-bottom: 1px solid var(--border-subtle);
    }
    .hero-h1 {
      font-size: 3.2rem;
      font-weight: 900;
      color: #FFFFFF;
      line-height: 1.18;
      letter-spacing: -1px;
      margin-bottom: 22px;
    }
    .hero-highlight {
      background: linear-gradient(120deg, #FFFFFF, var(--cyan-neon));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-poster-box {
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid var(--border-highlight);
      box-shadow: 0 20px 45px rgba(0, 0, 0, 0.7);
      position: relative;
    }
    .hero-poster-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .poster-ribbon {
      position: absolute;
      top: 14px;
      right: 14px;
      background: rgba(11, 14, 20, 0.85);
      border: 1px solid var(--orange-accent);
      color: var(--orange-accent);
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
    }

    /* 数据指标板块 */
    .metric-value {
      font-size: 2.8rem;
      font-weight: 800;
      color: #FFFFFF;
      line-height: 1;
      font-variant-numeric: tabular-nums;
    }
    .metric-badge {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(0, 245, 212, 0.12);
      color: var(--cyan-neon);
      display: inline-block;
      margin-bottom: 8px;
    }

    /* 产线能力 & 参数表格 */
    .tech-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      overflow: hidden;
    }
    .tech-table th {
      background-color: var(--bg-surface-elevated);
      color: #FFFFFF;
      padding: 14px 18px;
      font-size: 0.9rem;
      font-weight: 600;
      border-bottom: 1px solid var(--border-subtle);
    }
    .tech-table td {
      padding: 14px 18px;
      font-size: 0.875rem;
      color: var(--text-main);
      border-bottom: 1px solid var(--border-subtle);
      background-color: rgba(19, 24, 34, 0.6);
    }
    .tech-table tr:last-child td {
      border-bottom: none;
    }

    /* 案例展厅卡片 */
    .case-card-img-wrap {
      height: 210px;
      border-radius: 8px;
      overflow: hidden;
      margin-bottom: 18px;
      position: relative;
    }
    .case-card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .base-card:hover .case-card-img-wrap img {
      transform: scale(1.04);
    }

    /* 交付流程时间步进 */
    .step-badge {
      width: 38px;
      height: 38px;
      background: var(--bg-surface-elevated);
      border: 1px solid var(--cyan-neon);
      color: var(--cyan-neon);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin-bottom: 16px;
    }

    /* 手风琴 FAQ 样式定制 */
    .accordion-item {
      background-color: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      margin-bottom: 12px;
      border-radius: 8px !important;
      overflow: hidden;
    }
    .accordion-button {
      background-color: var(--bg-surface);
      color: #FFFFFF;
      font-weight: 600;
      font-size: 1.02rem;
      box-shadow: none !important;
      padding: 18px 22px;
    }
    .accordion-button:not(.collapsed) {
      color: var(--cyan-neon);
      background-color: var(--bg-surface-elevated);
    }
    .accordion-button::after {
      filter: invert(1);
    }
    .accordion-body {
      background-color: var(--bg-surface);
      color: var(--text-muted);
      font-size: 0.925rem;
      line-height: 1.7;
      padding: 18px 22px 22px;
    }

    /* 表单组件 */
    .form-control, .form-select {
      background-color: #0E131C;
      border: 1px solid var(--border-subtle);
      color: #FFFFFF;
      padding: 12px 16px;
      border-radius: 6px;
    }
    .form-control:focus, .form-select:focus {
      background-color: #0E131C;
      border-color: var(--cyan-neon);
      color: #FFFFFF;
      box-shadow: 0 0 0 0.25rem rgba(0, 245, 212, 0.15);
    }

    /* 吸底快速接入悬浮条 */
    .floating-cta-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(11, 14, 20, 0.95);
      border-top: 1px solid var(--border-highlight);
      backdrop-filter: blur(10px);
      padding: 12px 0;
      z-index: 1020;
    }

    /* 页脚 */
    .site-footer {
      background-color: #07090E;
      border-top: 1px solid var(--border-subtle);
      padding: 70px 0 100px;
      font-size: 0.875rem;
      color: var(--text-muted);
    }
    .site-footer h6 {
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 20px;
      font-size: 0.95rem;
    }
    .site-footer ul {
      list-style: none;
      padding-left: 0;
    }
    .site-footer ul li {
      margin-bottom: 10px;
    }
    .site-footer ul li a:hover {
      color: var(--cyan-neon);
    }
    .footer-divider {
      border-top: 1px solid var(--border-subtle);
      margin: 40px 0 25px;
    }

    @media (max-width: 991.98px) {
      .hero-h1 {
        font-size: 2.3rem;
      }
      .section-title {
        font-size: 1.8rem;
      }
      .content-section {
        padding: 60px 0;
      }
      .floating-cta-bar {
        display: none;
      }
    }