/* roulang page: index */
:root {
      --bg-base: #0a0b10;
      --bg-card: #14151e;
      --bg-elevated: #1b1d28;
      --primary-purple: #6a35d9;
      --primary-glow: #8e54e9;
      --accent-ember: #ff5722;
      --accent-amber: #ff9800;
      --text-main: #f0f2fa;
      --text-muted: #9aa1b8;
      --border-subtle: rgba(142, 84, 233, 0.22);
      --border-glow: rgba(255, 87, 34, 0.45);
      --radius-sm: 6px;
      --radius-md: 8px;
      --transition-smooth: all 0.32s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-smooth);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    /* 滚动收缩双层导航结构 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1050;
      transition: transform 0.35s ease, background-color 0.35s ease, box-shadow 0.35s ease;
    }

    .header-topbar {
      background: rgba(10, 11, 16, 0.95);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.8125rem;
      color: var(--text-muted);
      padding: 6px 0;
      transition: height 0.3s ease, opacity 0.3s ease;
    }

    .header-navbar {
      background: rgba(16, 17, 25, 0.82);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-subtle);
      padding: 14px 0;
      transition: padding 0.3s ease;
    }

    .site-header.scrolled {
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.7);
    }

    .site-header.scrolled .header-topbar {
      display: none;
    }

    .site-header.scrolled .header-navbar {
      padding: 8px 0;
      background: rgba(12, 13, 20, 0.94);
    }

    .brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }

    .brand-mark {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary-glow), var(--accent-ember));
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1rem;
      box-shadow: 0 0 15px rgba(142, 84, 233, 0.5);
    }

    .nav-link {
      color: #d1d5e6 !important;
      font-size: 0.9375rem;
      font-weight: 500;
      padding: 8px 16px !important;
      position: relative;
    }

    .nav-link:hover, .nav-link.active {
      color: #fff !important;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 16px;
      right: 16px;
      height: 2px;
      background: var(--accent-ember);
      transform: scaleX(0);
      transition: transform 0.25s ease;
    }

    .nav-link:hover::after, .nav-link.active::after {
      transform: scaleX(1);
    }

    /* 按钮与交互徽章 */
    .btn-epic {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-glow) 100%);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.2);
      padding: 10px 24px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9375rem;
      box-shadow: 0 4px 18px rgba(106, 53, 217, 0.35);
      transition: var(--transition-smooth);
    }

    .btn-epic:hover {
      background: linear-gradient(135deg, var(--primary-glow) 0%, #a46dff 100%);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(142, 84, 233, 0.55);
    }

    .btn-outline-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.04);
      color: #e2e6f3;
      border: 1px solid var(--border-subtle);
      padding: 10px 24px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9375rem;
      transition: var(--transition-smooth);
    }

    .btn-outline-glow:hover {
      background: rgba(142, 84, 233, 0.16);
      border-color: var(--primary-glow);
      color: #fff;
      transform: translateY(-2px);
    }

    .pill-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      background: rgba(142, 84, 233, 0.14);
      border: 1px solid var(--border-subtle);
      border-radius: 4px;
      font-size: 0.775rem;
      font-weight: 600;
      color: #c7a7ff;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .pill-ember {
      background: rgba(255, 87, 34, 0.12);
      border-color: rgba(255, 87, 34, 0.35);
      color: #ff8a65;
    }

    /* 板块排版与卡片体系 */
    .app-section {
      padding: 96px 0;
      position: relative;
    }

    .section-alt {
      background-color: #0e0f16;
    }

    .section-header {
      margin-bottom: 54px;
    }

    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      margin-top: 10px;
    }

    .section-subtitle {
      color: var(--text-muted);
      font-size: 1rem;
      max-width: 680px;
      margin-top: 10px;
      line-height: 1.7;
    }

    .game-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 28px;
      height: 100%;
      position: relative;
      transition: var(--transition-smooth);
      overflow: hidden;
    }

    .game-card:hover {
      transform: translateY(-4px);
      border-color: var(--primary-glow);
      box-shadow: 0 14px 34px rgba(106, 53, 217, 0.22);
    }

    .game-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--primary-glow), transparent);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .game-card:hover::before {
      opacity: 1;
    }

    /* 首屏 Hero 架构 */
    .hero-section {
      min-height: 92vh;
      display: flex;
      align-items: center;
      padding-top: 140px;
      padding-bottom: 80px;
      position: relative;
      background: radial-gradient(circle at 75% 30%, rgba(106, 53, 217, 0.28) 0%, rgba(10, 11, 16, 0.85) 60%), url('/assets/images/0f474c3b1c78e8b3.jpg') center/cover no-repeat;
    }

    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(10, 11, 16, 0.8) 0%, rgba(10, 11, 16, 0.95) 100%);
      z-index: 1;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-title {
      font-size: 3.25rem;
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -1px;
      color: #fff;
      margin: 18px 0;
    }

    .hero-title .glow-span {
      background: linear-gradient(120deg, #fff 30%, #c49eff 70%, #ff8a65 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.1rem;
      color: #b5bdd4;
      line-height: 1.75;
      margin-bottom: 34px;
      max-width: 640px;
    }

    /* 区域协同标签栏（蓝图本地感） */
    .region-strip {
      background: var(--bg-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
      margin-top: 36px;
    }

    .region-tag {
      font-size: 0.8125rem;
      color: #c7ceea;
      background: rgba(255, 255, 255, 0.06);
      padding: 4px 10px;
      border-radius: 4px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 指标统计面板 */
    .stat-box {
      border-left: 3px solid var(--primary-glow);
      padding-left: 18px;
    }

    .stat-number {
      font-size: 2.25rem;
      font-weight: 800;
      font-family: Consolas, "Courier New", monospace;
      color: #fff;
      line-height: 1;
    }

    .stat-number span {
      color: var(--accent-ember);
      font-size: 1.4rem;
    }

    .stat-label {
      color: var(--text-muted);
      font-size: 0.85rem;
      margin-top: 6px;
    }

    /* 方案卡片与图文 */
    .featured-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition-smooth);
    }

    .featured-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
      border-color: var(--border-glow);
    }

    .card-thumb-wrap {
      position: relative;
      height: 220px;
      overflow: hidden;
      background: #1b1d28;
    }

    .card-thumb-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .featured-card:hover .card-thumb-wrap img {
      transform: scale(1.05);
    }

    .card-body-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    /* 流程时间线与结算条 */
    .settle-step {
      display: flex;
      gap: 16px;
      align-items: flex-start;
      margin-bottom: 24px;
    }

    .settle-step-num {
      width: 36px;
      height: 36px;
      flex-shrink: 0;
      background: rgba(142, 84, 233, 0.16);
      border: 1px solid var(--primary-glow);
      color: #d1b3ff;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }

    /* FAQ 样式 */
    .accordion-item {
      background-color: var(--bg-card) !important;
      border: 1px solid var(--border-subtle) !important;
      border-radius: var(--radius-sm) !important;
      margin-bottom: 12px;
      overflow: hidden;
    }

    .accordion-button {
      background-color: var(--bg-card) !important;
      color: #fff !important;
      font-weight: 600;
      font-size: 1rem;
      padding: 20px 24px;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      color: #cbb4ff !important;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

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

    .accordion-body {
      background-color: var(--bg-card);
      color: var(--text-muted);
      font-size: 0.925rem;
      line-height: 1.7;
      padding: 20px 24px;
    }

    /* 页脚 */
    .site-footer {
      background: #08090d;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 72px 0 32px;
      color: var(--text-muted);
      font-size: 0.875rem;
    }

    .footer-heading {
      color: #fff;
      font-size: 0.975rem;
      font-weight: 700;
      margin-bottom: 20px;
      letter-spacing: 0.5px;
    }

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

    .footer-list li {
      margin-bottom: 10px;
    }

    .footer-list a:hover {
      color: #fff;
      padding-left: 4px;
    }

    .footer-bottom {
      margin-top: 60px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.8125rem;
    }

    @media (max-width: 991.98px) {
      .hero-title {
        font-size: 2.45rem;
      }
      .app-section {
        padding: 64px 0;
      }
      .header-topbar {
        display: none !important;
      }
      .navbar-collapse {
        background: #141520;
        padding: 20px;
        border-radius: var(--radius-md);
        margin-top: 12px;
        border: 1px solid var(--border-subtle);
      }
    }

    @media (max-width: 575.98px) {
      .hero-title {
        font-size: 1.95rem;
      }
      .stat-number {
        font-size: 1.85rem;
      }
    }