/* roulang page: index */
:root {
      --primary: #5B21B6;
      --primary-light: #7C3AED;
      --primary-dark: #4C1D95;
      --accent: #06B6D4;
      --accent-green: #10B981;
      --gold: #F59E0B;
      --gold-light: #FCD34D;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0B0F19;
      --bg-darker: #060911;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-pill: 9999px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.1);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      padding: 0;
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.75;
      overflow-x: hidden;
    }
    p { margin-bottom: 1.25rem; }
    h1, h2, h3, h4, h5, h6 {
      color: var(--text-main);
      line-height: 1.3;
      font-weight: 700;
    }
    a { text-decoration: none; color: inherit; transition: var(--transition); }
    img { max-width: 100%; height: auto; display: block; }

    /* 顶部双行导航系统 */
    .top-utility-bar {
      background-color: var(--bg-darker);
      color: #94A3B8;
      font-size: 0.825rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 6px 0;
    }
    .top-utility-bar a { color: #CBD5E1; }
    .top-utility-bar a:hover { color: var(--accent); }

    .site-header {
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1020;
      transition: var(--transition);
    }
    .brand-logo-text {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 60%, var(--accent) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .nav-search-wrap {
      position: relative;
      width: 100%;
      max-width: 400px;
    }
    .nav-search-wrap input {
      width: 100%;
      border-radius: var(--radius-pill);
      padding: 0.5rem 1.15rem 0.5rem 2.5rem;
      font-size: 0.875rem;
      border: 1px solid var(--border-color);
      background-color: #F1F5F9;
      color: var(--text-main);
      transition: var(--transition);
    }
    .nav-search-wrap input:focus {
      outline: none;
      border-color: var(--primary-light);
      background-color: var(--bg-white);
      box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
    }
    .nav-search-wrap i {
      position: absolute;
      left: 0.9rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
    }
    .nav-menu-link {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-body);
      padding: 0.5rem 0.85rem;
      border-radius: var(--radius-sm);
    }
    .nav-menu-link:hover, .nav-menu-link.active {
      color: var(--primary-light);
      background: rgba(124, 58, 237, 0.05);
    }

    /* 按钮重构规范 */
    .btn-gradient-main {
      background: linear-gradient(135deg, var(--primary-light) 0%, #4F46E5 100%);
      color: #FFFFFF !important;
      font-weight: 600;
      padding: 0.65rem 1.6rem;
      border-radius: var(--radius-pill);
      border: none;
      box-shadow: 0 8px 16px -2px rgba(124, 58, 237, 0.35);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-gradient-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 20px -2px rgba(124, 58, 237, 0.45);
      color: #FFFFFF;
    }
    .btn-outline-gold {
      background: rgba(245, 158, 11, 0.1);
      color: var(--gold-light) !important;
      border: 1px solid var(--gold);
      font-weight: 600;
      padding: 0.65rem 1.6rem;
      border-radius: var(--radius-pill);
      transition: var(--transition);
    }
    .btn-outline-gold:hover {
      background: var(--gold);
      color: #000000 !important;
      transform: translateY(-2px);
    }
    .btn-outline-custom {
      background: transparent;
      border: 1px solid var(--border-color);
      color: var(--text-body);
      font-weight: 600;
      padding: 0.6rem 1.4rem;
      border-radius: var(--radius-pill);
      transition: var(--transition);
    }
    .btn-outline-custom:hover {
      border-color: var(--primary-light);
      color: var(--primary-light);
      background-color: rgba(124, 58, 237, 0.04);
    }

    /* 板块结构基准 */
    .section-gap {
      padding: 5rem 0;
    }
    .section-title-wrap {
      max-width: 800px;
      margin: 0 auto 3.5rem auto;
      text-align: center;
    }
    .section-badge {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary-light);
      background: rgba(124, 58, 237, 0.1);
      padding: 0.3rem 0.9rem;
      border-radius: var(--radius-pill);
      margin-bottom: 0.85rem;
    }
    .section-title {
      font-size: 2.15rem;
      letter-spacing: -0.5px;
      margin-bottom: 1rem;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 1.05rem;
      line-height: 1.8;
      margin-bottom: 0;
    }

    /* 卡片体系 */
    .base-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      transition: var(--transition);
      height: 100%;
      overflow: hidden;
    }
    .base-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(124, 58, 237, 0.3);
    }

    /* 板块一：Hero 黑金俱乐部与强转化 */
    .hero-container {
      position: relative;
      background: url('/assets/images/a0c600eb80dcd169.jpg') center center/cover no-repeat;
      color: #FFFFFF;
      padding: 6rem 0 5.5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(11, 15, 25, 0.94) 0%, rgba(15, 23, 42, 0.88) 55%, rgba(91, 33, 182, 0.6) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-badge-gold {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: linear-gradient(90deg, rgba(245, 158, 11, 0.2) 0%, rgba(252, 211, 77, 0.1) 100%);
      border: 1px solid var(--gold);
      color: var(--gold-light);
      padding: 0.35rem 1.1rem;
      border-radius: var(--radius-pill);
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: -1px;
      line-height: 1.25;
      margin-bottom: 1.25rem;
    }
    .hero-summary {
      font-size: 1.1rem;
      color: #CBD5E1;
      line-height: 1.8;
      max-width: 640px;
      margin-bottom: 2rem;
    }
    .hero-card-widget {
      background: rgba(17, 24, 39, 0.75);
      border: 1px solid rgba(245, 158, 11, 0.3);
      backdrop-filter: blur(16px);
      border-radius: var(--radius-lg);
      padding: 2.25rem;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }
    .vip-tier-tag {
      background: linear-gradient(135deg, var(--gold) 0%, #D97706 100%);
      color: #000;
      font-weight: 800;
      font-size: 0.75rem;
      padding: 0.25rem 0.75rem;
      border-radius: var(--radius-pill);
      text-transform: uppercase;
    }

    /* 板块二：底层架构 */
    .arch-code-box {
      background: var(--bg-dark);
      color: #E2E8F0;
      border-radius: var(--radius-md);
      padding: 1.75rem;
      border: 1px solid rgba(255, 255, 255, 0.08);
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.875rem;
    }
    .metric-pill {
      background: #F1F5F9;
      padding: 0.6rem 1rem;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: space-between;
      border: 1px solid var(--border-color);
      margin-bottom: 0.75rem;
    }

    /* 板块三：六维卖点 */
    .icon-box-violet {
      width: 54px;
      height: 54px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(124, 58, 237, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
      color: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 1.25rem;
    }

    /* 板块四：场景卡片 */
    .scenario-card-img {
      height: 220px;
      object-fit: cover;
      width: 100%;
    }

    /* 板块五：深色案例 */
    .dark-section-box {
      background-color: var(--bg-dark);
      color: #F8FAFC;
    }
    .dark-inner-panel {
      background: rgba(30, 41, 59, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 2rem;
    }

    /* 板块七：数据统计条 */
    .metrics-full-banner {
      background: linear-gradient(90deg, #1E1B4B 0%, #312E81 50%, #0F172A 100%);
      color: #FFFFFF;
      padding: 3.5rem 0;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .stat-number {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1.1;
      font-variant-numeric: tabular-nums;
    }

    /* 板块八：评价卡片 */
    .quote-badge {
      font-size: 2.5rem;
      line-height: 1;
      color: rgba(124, 58, 237, 0.25);
    }

    /* 板块十：手风琴 FAQ */
    .accordion-custom .accordion-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md) !important;
      margin-bottom: 1rem;
      overflow: hidden;
    }
    .accordion-custom .accordion-button {
      font-weight: 600;
      color: var(--text-main);
      padding: 1.25rem 1.5rem;
      background: #FFFFFF;
      box-shadow: none;
    }
    .accordion-custom .accordion-button:not(.collapsed) {
      color: var(--primary-light);
      background: rgba(124, 58, 237, 0.03);
    }
    .accordion-custom .accordion-body {
      padding: 0 1.5rem 1.25rem 1.5rem;
      color: var(--text-body);
      line-height: 1.8;
    }

    /* 板块十一：合规条 */
    .guarantee-chip {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 1.25rem 1.5rem;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      gap: 1rem;
      box-shadow: var(--shadow-sm);
    }

    /* 板块十二：收口大卡片 */
    .cta-big-card {
      background: linear-gradient(135deg, #4C1D95 0%, #1E1B4B 60%, #0F172A 100%);
      border-radius: var(--radius-lg);
      padding: 4rem 3rem;
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
    }

    /* 底部固定条 */
    .sticky-bottom-action {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(15, 23, 42, 0.95);
      backdrop-filter: blur(12px);
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      z-index: 1010;
      padding: 0.75rem 0;
      box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.2);
    }

    /* 页脚 */
    .site-footer {
      background-color: var(--bg-darker);
      color: #94A3B8;
      padding: 5rem 0 4.5rem 0;
      font-size: 0.925rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .site-footer h6 {
      color: #FFFFFF;
      font-size: 1rem;
      margin-bottom: 1.25rem;
    }
    .site-footer ul { list-style: none; padding: 0; margin: 0; }
    .site-footer li { margin-bottom: 0.65rem; }
    .site-footer a:hover { color: var(--accent); }

    /* 响应式调优 */
    @media (max-width: 991.98px) {
      .hero-h1 { font-size: 2.2rem; }
      .section-gap { padding: 3.5rem 0; }
      .cta-big-card { padding: 2.5rem 1.5rem; }
    }
    @media (max-width: 575.98px) {
      .hero-h1 { font-size: 1.85rem; }
      .top-utility-bar { display: none; }
      .nav-search-wrap { max-width: 100%; margin: 0.5rem 0; }
    }