/* roulang page: index */
:root {
      --brand-blue: #0A58CA;
      --brand-blue-hover: #084298;
      --brand-teal: #00A389;
      --brand-orange: #FF5E1E;
      --dark-navy: #0B192C;
      --bg-light: #F8FAFC;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-soft: 0 4px 20px -2px rgba(10, 88, 202, 0.06);
      --shadow-hover: 0 12px 28px -4px rgba(10, 88, 202, 0.14);
      --transition-smooth: all 0.25s ease-in-out;
    }

    * { box-sizing: border-box; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #ffffff;
      line-height: 1.65;
      overflow-x: hidden;
    }

    a { text-decoration: none; color: inherit; }
    img { max-width: 100%; height: auto; }

    /* 资讯门户吸顶导航 */
    .portal-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      box-shadow: 0 1px 10px rgba(0,0,0,0.05);
      border-bottom: 1px solid var(--border-color);
    }
    .header-top {
      padding: 12px 0;
      border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    }
    .brand-logo-txt {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--brand-blue);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      letter-spacing: -0.5px;
    }
    .brand-logo-txt i { font-size: 1.6rem; color: var(--brand-teal); }
    .search-mockup {
      background: #F1F5F9;
      border: 1px solid var(--border-color);
      border-radius: 50px;
      padding: 6px 16px;
      display: flex;
      align-items: center;
      width: 100%;
      max-width: 320px;
    }
    .search-mockup input {
      border: none;
      background: transparent;
      outline: none;
      font-size: 0.85rem;
      color: var(--text-main);
      width: 100%;
      padding-left: 8px;
    }
    .header-channels {
      padding: 6px 0;
      display: flex;
      align-items: center;
      overflow-x: auto;
      white-space: nowrap;
      scrollbar-width: none;
    }
    .header-channels::-webkit-scrollbar { display: none; }
    .channel-nav-link {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-muted);
      padding: 6px 14px;
      border-radius: 6px;
      transition: var(--transition-smooth);
    }
    .channel-nav-link:hover, .channel-nav-link.active {
      color: var(--brand-blue);
      background-color: #EFF6FF;
    }
    .hot-badge {
      font-size: 0.72rem;
      background: var(--brand-orange);
      color: #fff;
      padding: 2px 7px;
      border-radius: 20px;
      font-weight: 700;
      margin-left: 4px;
      vertical-align: middle;
    }

    /* 按钮与徽章 */
    .btn-brand-primary {
      background-color: var(--brand-blue);
      color: #ffffff;
      font-weight: 600;
      border-radius: var(--radius-sm);
      padding: 10px 24px;
      min-height: 44px;
      border: 1px solid var(--brand-blue);
      transition: var(--transition-smooth);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-brand-primary:hover {
      background-color: var(--brand-blue-hover);
      color: #ffffff;
      transform: translateY(-1px);
    }
    .btn-brand-outline {
      background-color: transparent;
      color: var(--brand-blue);
      font-weight: 600;
      border-radius: var(--radius-sm);
      padding: 10px 24px;
      min-height: 44px;
      border: 1.5px solid var(--brand-blue);
      transition: var(--transition-smooth);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-brand-outline:hover {
      background-color: #EFF6FF;
      color: var(--brand-blue-hover);
    }

    /* 板块结构基准 */
    .section-wrap {
      padding: 72px 0;
    }
    .bg-soft { background-color: var(--bg-light); }
    .bg-white-pure { background-color: #ffffff; }
    .section-header {
      margin-bottom: 40px;
    }
    .section-header h2 {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-header p {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto;
    }
    .sec-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--brand-blue);
      background: #EFF6FF;
      border: 1px solid #DBEAFE;
      padding: 4px 12px;
      border-radius: 50px;
      margin-bottom: 10px;
      text-transform: uppercase;
    }

    /* 卡片通用 */
    .app-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-soft);
      transition: var(--transition-smooth);
      height: 100%;
    }
    .app-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #BFDBFE;
    }

    /* 1. Hero 柔光板块 */
    .hero-organic-band {
      background: linear-gradient(135deg, #F8FAFC 0%, #EFF6FF 60%, #E0F2FE 100%);
      position: relative;
      padding: 60px 0 70px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-h1 {
      font-size: 2.7rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--dark-navy);
      margin-bottom: 20px;
    }
    .hero-desc {
      font-size: 1.1rem;
      color: #334155;
      margin-bottom: 28px;
    }
    .hero-features-pill-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 30px;
    }
    .hero-pill-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      background: rgba(255,255,255,0.85);
      border: 1px solid #CBD5E1;
      padding: 6px 14px;
      border-radius: 30px;
    }
    .hero-pill-item i { color: var(--brand-teal); }
    .hero-visual-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 20px 40px -10px rgba(10, 88, 202, 0.18);
      border: 4px solid #ffffff;
    }

    /* 2. 品牌与参数概况 */
    .metric-bubble {
      padding: 16px 20px;
      background: #F8FAFC;
      border-radius: var(--radius-sm);
      border-left: 4px solid var(--brand-blue);
      margin-bottom: 16px;
    }
    .metric-bubble h4 {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 2px;
      color: var(--brand-blue);
    }
    .metric-bubble p {
      margin: 0;
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 3. 核心优势矩阵 */
    .adv-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: #EFF6FF;
      color: var(--brand-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 18px;
    }

    /* 4. 热门功能体验区 */
    .feature-tag-strip {
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--brand-teal);
      background: #ECFDF5;
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
    }

    /* 5. 深色赛事引擎底座 */
    .dark-engine-section {
      background-color: var(--dark-navy);
      color: #F8FAFC;
      position: relative;
    }
    .dark-engine-section .sec-tag {
      background: rgba(0, 163, 137, 0.2);
      border-color: rgba(0, 163, 137, 0.4);
      color: #2DD4BF;
    }
    .dark-engine-section h2 { color: #ffffff; }
    .dark-engine-section p { color: #94A3B8; }
    .engine-node-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 24px;
      height: 100%;
      transition: var(--transition-smooth);
    }
    .engine-node-card:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(0, 163, 137, 0.6);
      transform: translateY(-4px);
    }

    /* 6. 用户实战场景 */
    .scenario-card {
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      background: #ffffff;
      box-shadow: var(--shadow-soft);
    }
    .scenario-card .body { padding: 24px; }

    /* 7. 关键数据指标条 */
    .stats-strip {
      background: #0F172A;
      color: #fff;
      padding: 44px 0;
      border-top: 1px solid rgba(255,255,255,0.08);
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .stat-number {
      font-size: 2.6rem;
      font-weight: 800;
      color: #38BDF8;
      line-height: 1;
      margin-bottom: 8px;
      font-family: Arial, Helvetica, sans-serif;
    }
    .stat-label {
      font-size: 0.95rem;
      color: #94A3B8;
      margin: 0;
    }

    /* 8. 评价墙 */
    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px solid #F1F5F9;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #64748B;
      font-weight: 700;
    }
    .stars { color: #F59E0B; font-size: 0.88rem; }

    /* 9. 内嵌赛事速递 */
    .news-item-strip {
      display: flex;
      gap: 18px;
      padding: 16px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      transition: var(--transition-smooth);
    }
    .news-item-strip:hover {
      border-color: var(--brand-blue);
      box-shadow: 0 4px 12px rgba(10,88,202,0.08);
    }
    .news-img-box {
      width: 130px;
      height: 90px;
      border-radius: 6px;
      overflow: hidden;
      flex-shrink: 0;
    }
    .news-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* 10. 媒体与数据合作 */
    .partner-logo-item {
      padding: 18px 24px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      text-align: center;
      color: #94A3B8;
      font-weight: 700;
      font-size: 1rem;
      transition: var(--transition-smooth);
    }
    .partner-logo-item:hover {
      color: var(--brand-blue);
      border-color: var(--brand-blue);
      transform: translateY(-2px);
    }

    /* 11. FAQ 手风琴 */
    .accordion-item {
      border: none;
      margin-bottom: 14px;
      border-radius: var(--radius-md) !important;
      border: 1px solid var(--border-color);
      overflow: hidden;
    }
    .accordion-button {
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--text-main);
      background-color: #ffffff;
      padding: 18px 22px;
      box-shadow: none !important;
    }
    .accordion-button:not(.collapsed) {
      color: var(--brand-blue);
      background-color: #F8FAFC;
    }
    .accordion-body {
      padding: 18px 22px;
      color: #475569;
      background-color: #ffffff;
      font-size: 0.95rem;
      line-height: 1.7;
    }

    /* 12. 安全保障条 */
    .security-badge-box {
      text-align: center;
      padding: 24px 16px;
      border-radius: var(--radius-sm);
      border: 1px dashed #CBD5E1;
      background: #ffffff;
      height: 100%;
    }
    .security-badge-box i {
      font-size: 2rem;
      color: var(--brand-teal);
      margin-bottom: 10px;
      display: inline-block;
    }

    /* 13. 底部转化收口 */
    .bottom-cta-banner {
      background: linear-gradient(135deg, #0A58CA 0%, #033C8B 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      text-align: center;
      box-shadow: 0 15px 35px rgba(10, 88, 202, 0.25);
    }

    /* 页脚 */
    .portal-footer {
      background-color: #07101C;
      color: #94A3B8;
      padding: 64px 0 28px 0;
      border-top: 1px solid #1E293B;
      font-size: 0.9rem;
    }
    .portal-footer h5 {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .portal-footer ul { list-style: none; padding: 0; margin: 0; }
    .portal-footer ul li { margin-bottom: 10px; }
    .portal-footer ul li a {
      color: #94A3B8;
      transition: var(--transition-smooth);
    }
    .portal-footer ul li a:hover {
      color: #38BDF8;
      padding-left: 4px;
    }
    .footer-bottom-line {
      margin-top: 50px;
      padding-top: 24px;
      border-top: 1px solid #1E293B;
      font-size: 0.84rem;
      color: #64748B;
    }

    @media (max-width: 991px) {
      .hero-h1 { font-size: 2.1rem; }
      .section-header h2 { font-size: 1.8rem; }
      .search-mockup { display: none; }
    }