/* roulang page: index */
:root {
      --primary: #1E56E3;
      --primary-hover: #1644B8;
      --accent: #00C389;
      --warning: #FF9F1C;
      --bg-page: #F8FAFC;
      --surface: #FFFFFF;
      --surface-dark: #0A192F;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-pill: 9999px;
      --shadow-sm: 0 2px 6px -1px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 6px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
      --shadow-hover: 0 16px 32px -4px rgba(30, 86, 227, 0.12);
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

    body {
      font-family: -apple-system, "PingFang SC", "Lantinghei SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

    /* 顶部微信息条 */
    .top-bar {
      background: #0F172A;
      color: #94A3B8;
      font-size: 0.825rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-status-indicator {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--accent);
      margin-right: 6px;
      box-shadow: 0 0 8px var(--accent);
    }

    /* 主导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      z-index: 1030;
    }
    .brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 10px;
      letter-spacing: -0.5px;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary) 0%, #3B82F6 100%);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      font-size: 1.1rem;
    }
    .nav-link {
      font-weight: 500;
      color: var(--text-main) !important;
      padding: 0.75rem 1rem !important;
      border-radius: var(--radius-sm);
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary) !important;
    }

    /* 资源目录轻量下拉 */
    .dropdown:hover .dropdown-menu {
      display: block;
      margin-top: 0;
    }
    .dropdown-menu {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      padding: 12px;
      min-width: 260px;
    }
    .dropdown-item {
      border-radius: 6px;
      padding: 8px 12px;
      font-size: 0.9rem;
      font-weight: 500;
    }
    .dropdown-item:hover {
      background: #EFF6FF;
      color: var(--primary);
    }

    /* 自定义按钮 */
    .btn-main {
      background-color: var(--primary);
      color: #ffffff !important;
      font-weight: 600;
      border-radius: 10px;
      padding: 0.7rem 1.6rem;
      border: 1px solid transparent;
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-main:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(30, 86, 227, 0.25);
    }
    .btn-outline-main {
      background-color: transparent;
      color: var(--text-main);
      font-weight: 600;
      border-radius: 10px;
      padding: 0.7rem 1.6rem;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-outline-main:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: #EFF6FF;
    }

    /* 板块结构基调 */
    .section-spacing {
      padding-top: 85px;
      padding-bottom: 85px;
    }
    .section-header {
      margin-bottom: 3rem;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      padding: 4px 12px;
      border-radius: var(--radius-pill);
      background: #DBEAFE;
      color: var(--primary);
      margin-bottom: 0.75rem;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 0.85rem;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto;
    }

    /* 现代卡片 */
    .app-card {
      background: var(--surface);
      border-radius: var(--radius-lg);
      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(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #BFDBFE;
    }

    /* 板块1：Hero 直播预告与平台枢纽 */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, rgba(248, 250, 252, 0.92) 0%, rgba(239, 246, 255, 0.95) 100%), url('/assets/images/1653df9ea6f68288.jpg') center/cover no-repeat;
      padding-top: 70px;
      padding-bottom: 80px;
      border-bottom: 1px solid var(--border-color);
    }
    .live-broadcast-card {
      background: #0F172A;
      color: #fff;
      border-radius: var(--radius-lg);
      padding: 2rem;
      box-shadow: 0 20px 40px rgba(15, 23, 42, 0.25);
      border: 1px solid rgba(255, 255, 255, 0.1);
      position: relative;
      overflow: hidden;
    }
    .countdown-box {
      background: rgba(255, 255, 255, 0.08);
      border-radius: 10px;
      padding: 12px;
      text-align: center;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .countdown-val {
      font-size: 1.75rem;
      font-weight: 700;
      color: #38BDF8;
      display: block;
      line-height: 1.1;
    }
    .countdown-lbl {
      font-size: 0.75rem;
      color: #94A3B8;
    }

    /* 板块6：沉浸深色引擎底座 */
    .dark-engine-section {
      background: var(--surface-dark);
      color: #F8FAFC;
    }
    .dark-engine-section .section-title {
      color: #F8FAFC;
    }
    .code-terminal {
      background: #040D1A;
      border: 1px solid #1E293B;
      border-radius: 12px;
      padding: 1.5rem;
      font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
      font-size: 0.875rem;
      color: #E2E8F0;
    }

    /* 流程连接线 */
    .workflow-step {
      position: relative;
    }
    .workflow-num {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #EFF6FF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
      border: 2px solid #BFDBFE;
    }

    /* 评分星标 */
    .rating-stars {
      color: var(--warning);
      font-size: 0.85rem;
    }

    /* 合作伙伴徽标网格 */
    .partner-grid-item {
      background: var(--surface);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 1.25rem;
      text-align: center;
      font-weight: 600;
      color: #64748B;
      transition: var(--transition);
    }
    .partner-grid-item:hover {
      color: var(--primary);
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    /* 页脚 */
    .site-footer {
      background: #0B132B;
      color: #94A3B8;
      font-size: 0.925rem;
      border-top: 1px solid #1E293B;
    }
    .site-footer h6 {
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .site-footer a {
      color: #94A3B8;
    }
    .site-footer a:hover {
      color: #FFFFFF;
    }

    @media (max-width: 991.98px) {
      .section-spacing {
        padding-top: 60px;
        padding-bottom: 60px;
      }
      .section-title {
        font-size: 1.75rem;
      }
    }