/* roulang page: index */
:root {
      --primary-color: #154B8C;
      --primary-hover: #103B6F;
      --primary-light: #EBF3FC;
      --secondary-color: #00A3C4;
      --accent-color: #FF6B35;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0B1E36;
      --border-color: #E2E8F0;
      --card-radius: 16px;
      --shadow-sm: 0 4px 20px -2px rgba(21, 75, 140, 0.06);
      --shadow-hover: 0 14px 30px -4px rgba(21, 75, 140, 0.14);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.68;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    /* 顶部悬浮内缩圆角导航 */
    .floating-header-wrapper {
      position: fixed;
      top: 14px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 32px);
      max-width: 1240px;
      z-index: 1050;
      transition: var(--transition);
    }

    .top-mini-bar {
      background: rgba(11, 30, 54, 0.9);
      backdrop-filter: blur(8px);
      color: #CBD5E1;
      font-size: 0.8rem;
      border-radius: 12px 12px 0 0;
      padding: 5px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .main-navbar {
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(16px);
      border-radius: 0 0 16px 16px;
      box-shadow: 0 10px 30px rgba(11, 30, 54, 0.1);
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-top: none;
      padding: 10px 24px;
    }

    .navbar-brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      gap: 10px;
      letter-spacing: -0.5px;
    }

    .navbar-brand-logo i {
      color: var(--accent-color);
      font-size: 1.5rem;
    }

    .nav-link-custom {
      font-size: 0.95rem;
      font-weight: 600;
      color: #334155;
      padding: 8px 14px;
      border-radius: 8px;
      transition: var(--transition);
    }

    .nav-link-custom:hover {
      color: var(--primary-color);
      background: var(--primary-light);
    }

    /* 按钮定制重塑 */
    .btn-brand-primary {
      background: linear-gradient(135deg, var(--primary-color) 0%, #1E5EAE 100%);
      color: #fff !important;
      font-weight: 600;
      padding: 10px 24px;
      border-radius: 50px;
      border: none;
      box-shadow: 0 4px 14px rgba(21, 75, 140, 0.25);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-brand-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(21, 75, 140, 0.35);
      background: linear-gradient(135deg, #123F77 0%, var(--primary-color) 100%);
    }

    .btn-brand-accent {
      background: linear-gradient(135deg, var(--accent-color) 0%, #FF8554 100%);
      color: #fff !important;
      font-weight: 600;
      padding: 10px 24px;
      border-radius: 50px;
      border: none;
      box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-brand-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(255, 107, 53, 0.4);
    }

    .btn-brand-outline {
      border: 1.5px solid var(--primary-color);
      color: var(--primary-color);
      font-weight: 600;
      padding: 9px 22px;
      border-radius: 50px;
      background: transparent;
      transition: var(--transition);
    }

    .btn-brand-outline:hover {
      background: var(--primary-color);
      color: #fff !important;
    }

    /* 基础 Section 体系 */
    .site-section {
      padding: 90px 0;
      position: relative;
    }

    .section-bg-light {
      background-color: var(--bg-light);
    }

    .section-bg-dark {
      background-color: var(--bg-dark);
      color: #F8FAFC;
    }

    .section-header {
      margin-bottom: 50px;
    }

    .section-badge {
      display: inline-block;
      padding: 5px 14px;
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--primary-color);
      background: var(--primary-light);
      border-radius: 30px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-badge.badge-accent {
      color: var(--accent-color);
      background: #FFF0EB;
    }

    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      line-height: 1.3;
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto;
      line-height: 1.7;
    }

    .section-bg-dark .section-desc {
      color: #94A3B8;
    }

    /* 卡片基础 */
    .app-card {
      background: var(--bg-white);
      border-radius: var(--card-radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .app-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: #CBD5E1;
    }

    /* 板块 1: 裂变首屏 Hero */
    .hero-section {
      padding-top: 160px;
      padding-bottom: 90px;
      background: radial-gradient(circle at 10% 20%, rgba(235, 243, 252, 0.8) 0%, rgba(255, 255, 255, 1) 90%), url('/assets/images/e9b6a0e4c0c98e58.png') center/cover no-repeat;
      position: relative;
    }

    .hero-card-fission {
      background: #FFFFFF;
      border: 1px solid rgba(21, 75, 140, 0.15);
      border-radius: 20px;
      box-shadow: 0 20px 40px -10px rgba(21, 75, 140, 0.12);
      padding: 36px;
      position: relative;
    }

    .fission-step-badge {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
    }

    /* 板块 2: 内容日历 */
    .calendar-timeline-card {
      padding: 24px;
      border-left: 4px solid var(--primary-color);
      background: var(--bg-white);
      border-radius: 0 16px 16px 0;
      box-shadow: var(--shadow-sm);
      height: 100%;
    }

    /* 板块 3: 热门专题 */
    .topic-media-card img {
      height: 200px;
      width: 100%;
      object-fit: cover;
    }

    /* 板块 5: 资讯卡 */
    .news-badge-date {
      font-size: 0.8rem;
      color: #64748B;
      font-weight: 600;
    }

    /* 板块 7: 数据条 */
    .stat-counter-box {
      border-right: 1px solid rgba(226, 232, 240, 0.6);
      text-align: center;
      padding: 15px;
    }
    .stat-counter-box:last-child {
      border-right: none;
    }
    .stat-number {
      font-size: 2.5rem;
      font-weight: 900;
      color: var(--primary-color);
      line-height: 1.1;
      letter-spacing: -1px;
    }

    /* 手风琴改造 */
    .accordion-item {
      border: 1px solid var(--border-color);
      border-radius: 12px !important;
      margin-bottom: 14px;
      overflow: hidden;
    }
    .accordion-button {
      font-weight: 700;
      color: var(--text-main);
      padding: 18px 22px;
      background-color: var(--bg-white);
    }
    .accordion-button:not(.collapsed) {
      color: var(--primary-color);
      background-color: var(--primary-light);
      box-shadow: none;
    }
    .accordion-button:focus {
      box-shadow: none;
      border-color: rgba(21, 75, 140, 0.25);
    }
    .accordion-body {
      padding: 18px 22px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 底部悬浮条 */
    .sticky-bottom-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(255, 255, 255, 0.97);
      backdrop-filter: blur(12px);
      box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
      z-index: 1040;
      padding: 10px 0;
      border-top: 1px solid var(--border-color);
    }

    /* 页脚 */
    .site-footer {
      background-color: #071526;
      color: #94A3B8;
      padding: 70px 0 100px;
      font-size: 0.92rem;
    }
    .site-footer h6 {
      color: #F8FAFC;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-nav-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-nav-list li {
      margin-bottom: 10px;
    }
    .footer-nav-list a:hover {
      color: #38BDF8;
    }

    /* 响应式调整 */
    @media (max-width: 991px) {
      .top-mini-bar {
        display: none;
      }
      .floating-header-wrapper {
        top: 8px;
        width: calc(100% - 16px);
      }
      .main-navbar {
        border-radius: 14px;
        padding: 8px 16px;
      }
      .hero-section {
        padding-top: 120px;
      }
      .stat-counter-box {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 20px 0;
      }
      .stat-counter-box:last-child {
        border-bottom: none;
      }
    }