/* roulang page: index */
:root {
      --bg-main: #0B0E14;
      --bg-card: rgba(18, 23, 33, 0.78);
      --bg-alt: #121721;
      --bg-darker: #07090D;
      --neon-green: #00FF88;
      --neon-cyan: #00D2FF;
      --neon-purple: #7928CA;
      --neon-red: #FF3366;
      --text-main: #FFFFFF;
      --text-muted: #CBD5E1;
      --text-dim: #64748B;
      --border-light: rgba(255, 255, 255, 0.08);
      --border-glow: rgba(0, 255, 136, 0.3);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 20px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

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

    /* 频道 Tabs 双层导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1020;
      background: rgba(11, 14, 20, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-light);
    }

    .nav-top-row {
      height: 66px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

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

    .brand-logo i {
      color: var(--neon-green);
      font-size: 1.5rem;
      filter: drop-shadow(0 0 8px rgba(0, 255, 136, 0.6));
    }

    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 255, 136, 0.08);
      border: 1px solid rgba(0, 255, 136, 0.3);
      padding: 4px 12px;
      border-radius: 30px;
      font-size: 0.8rem;
      color: var(--neon-green);
    }

    .status-badge .pulse-dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--neon-green);
      box-shadow: 0 0 8px var(--neon-green);
      animation: pulse 1.6s infinite;
    }

    @keyframes pulse {
      0% { opacity: 0.4; }
      50% { opacity: 1; }
      100% { opacity: 0.4; }
    }

    .nav-tabs-row {
      height: 46px;
      display: flex;
      align-items: center;
      overflow-x: auto;
      white-space: nowrap;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: none;
    }

    .nav-tabs-row::-webkit-scrollbar {
      display: none;
    }

    .channel-pill {
      display: inline-block;
      padding: 5px 16px;
      margin-right: 8px;
      border-radius: 20px;
      font-size: 0.85rem;
      color: var(--text-muted);
      background: transparent;
      border: 1px solid transparent;
      transition: all 0.2s ease;
    }

    .channel-pill:hover,
    .channel-pill.active {
      color: #000;
      background: var(--neon-green);
      font-weight: 600;
      box-shadow: 0 0 12px rgba(0, 255, 136, 0.4);
    }

    /* 按钮规范 */
    .btn-neon {
      background: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
      color: #05080e !important;
      font-weight: 700;
      border: none;
      padding: 10px 24px;
      border-radius: 8px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      box-shadow: 0 4px 18px rgba(0, 255, 136, 0.25);
      transition: all 0.25s ease;
    }

    .btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0, 255, 136, 0.45);
      color: #000 !important;
    }

    .btn-ghost {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-light);
      color: #fff !important;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: 8px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      transition: all 0.25s ease;
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(255, 255, 255, 0.25);
      color: #fff !important;
    }

    /* 板块通用间距 */
    .app-section {
      padding: 5rem 0;
      position: relative;
    }

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

    .app-section.deep-bg {
      background-color: var(--bg-darker);
    }

    .section-header {
      margin-bottom: 3rem;
    }

    .section-eyebrow {
      display: inline-block;
      text-transform: uppercase;
      font-size: 0.8rem;
      letter-spacing: 1.5px;
      color: var(--neon-green);
      font-weight: 700;
      margin-bottom: 8px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin-bottom: 1rem;
      color: #fff;
    }

    .section-desc {
      color: var(--text-muted);
      font-size: 1rem;
      max-width: 780px;
      margin: 0 auto;
      line-height: 1.7;
    }

    /* 卡片与组件通用样式 */
    .app-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.3s ease;
      height: 100%;
    }

    .app-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: 0 10px 30px -10px rgba(0, 255, 136, 0.15);
    }

    /* 1. 首屏 Banner 叙事区 */
    .hero-wrapper {
      position: relative;
      background: linear-gradient(180deg, rgba(11, 14, 20, 0.7) 0%, rgba(11, 14, 20, 0.95) 100%), url('/assets/images/2ac197eba9b4f557.webp') center/cover no-repeat;
      padding: 6.5rem 0 5rem 0;
      border-bottom: 1px solid var(--border-light);
    }

    .hero-h1 {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 1.5rem;
      letter-spacing: -0.5px;
      background: linear-gradient(180deg, #FFFFFF 20%, #CBD5E1 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-text {
      color: var(--text-muted);
      font-size: 1.1rem;
      line-height: 1.8;
      margin-bottom: 2.2rem;
    }

    .hero-metrics-pill {
      display: inline-flex;
      flex-wrap: wrap;
      gap: 16px;
      background: rgba(18, 23, 33, 0.85);
      border: 1px solid var(--border-light);
      padding: 12px 20px;
      border-radius: 12px;
      margin-top: 2rem;
    }

    .hero-metric-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .hero-metric-item i {
      color: var(--neon-cyan);
    }

    /* 2. 倒计时抢鲜特惠条 */
    .countdown-bar {
      background: linear-gradient(90deg, #161C28 0%, #101622 100%);
      border-bottom: 1px solid var(--border-light);
      padding: 1.5rem 0;
    }

    .timer-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 42px;
      height: 38px;
      background: #0B0E14;
      border: 1px solid rgba(0, 255, 136, 0.35);
      border-radius: 6px;
      font-weight: 800;
      color: var(--neon-green);
      font-family: monospace;
      font-size: 1.15rem;
      margin: 0 4px;
    }

    /* 3. 痛点卡片区 */
    .pain-badge {
      font-size: 0.75rem;
      padding: 4px 8px;
      background: rgba(255, 51, 102, 0.15);
      color: var(--neon-red);
      border-radius: 4px;
      font-weight: 700;
    }

    /* 4. 网络架构解析区 */
    .topo-img-wrap {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: 0 15px 35px rgba(0,0,0,0.5);
    }

    .topo-img-wrap img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    /* 5. 核心优势六宫格 */
    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 10px;
      background: rgba(0, 210, 255, 0.08);
      border: 1px solid rgba(0, 210, 255, 0.25);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      color: var(--neon-cyan);
      margin-bottom: 1.25rem;
    }

    /* 6. 套餐价格与订阅区 */
    .price-card {
      position: relative;
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      transition: all 0.3s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .price-card.featured {
      border-color: var(--neon-green);
      box-shadow: 0 0 25px rgba(0, 255, 136, 0.15);
      background: rgba(22, 30, 44, 0.9);
    }

    .ribbon-tag {
      position: absolute;
      top: -12px;
      right: 20px;
      background: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
      color: #000;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 3px 12px;
      border-radius: 20px;
    }

    .plan-price {
      font-size: 2.2rem;
      font-weight: 900;
      color: #fff;
      margin: 1rem 0;
    }

    .plan-price span {
      font-size: 0.9rem;
      color: var(--text-dim);
      font-weight: normal;
    }

    .plan-features {
      list-style: none;
      padding: 0;
      margin: 1.5rem 0 2rem 0;
      flex-grow: 1;
    }

    .plan-features li {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .plan-features li i {
      color: var(--neon-green);
      font-size: 0.85rem;
    }

    /* 7. 三步上手流程 */
    .step-step-badge {
      width: 44px;
      height: 44px;
      background: #0B0E14;
      border: 2px solid var(--neon-green);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--neon-green);
      margin-bottom: 1.25rem;
      font-size: 1.1rem;
    }

    /* 8. 成果数据条 */
    .stat-number {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1;
      font-family: monospace;
      background: linear-gradient(135deg, #FFFFFF, var(--neon-green));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
    }

    /* 9. 邀请裂变与进度 */
    .progress-custom {
      height: 12px;
      background: #0B0E14;
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid var(--border-light);
      margin: 18px 0;
    }

    .progress-bar-glow {
      background: linear-gradient(90deg, var(--neon-cyan), var(--neon-green));
      height: 100%;
      border-radius: 20px;
      box-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
    }

    /* 10. 玩家实战与口碑墙 */
    .review-user-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 1rem;
    }

    .review-avatar-box {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #1E293B;
      border: 1px solid rgba(255,255,255,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-green);
      font-weight: 700;
    }

    .ping-compare-tag {
      display: inline-block;
      font-size: 0.8rem;
      background: rgba(0, 255, 136, 0.1);
      border: 1px solid rgba(0, 255, 136, 0.3);
      color: var(--neon-green);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 700;
    }

    /* 11. 资讯文章卡片 */
    .article-thumb-img {
      height: 180px;
      width: 100%;
      object-fit: cover;
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
    }

    /* 12. FAQ 折叠面板与收口转化 */
    .accordion-item {
      background: var(--bg-card) !important;
      border: 1px solid var(--border-light) !important;
      border-radius: var(--radius-sm) !important;
      margin-bottom: 12px;
      overflow: hidden;
    }

    .accordion-button {
      background: transparent !important;
      color: #fff !important;
      font-weight: 600;
      font-size: 1.05rem;
      padding: 18px 24px;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--neon-green) !important;
      background: rgba(0, 255, 136, 0.05) !important;
      border-bottom: 1px solid var(--border-light);
    }

    .accordion-button::after {
      filter: invert(1) hue-rotate(90deg);
    }

    .accordion-body {
      padding: 20px 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.8;
    }

    .cta-banner-box {
      background: linear-gradient(135deg, rgba(18, 23, 33, 0.95), rgba(7, 9, 13, 0.98)), url('/assets/images/654046a8973f2114.jpg') center/cover;
      border: 1px solid rgba(0, 255, 136, 0.3);
      border-radius: var(--radius-lg);
      padding: 4rem 2rem;
      text-align: center;
      box-shadow: 0 0 40px rgba(0, 255, 136, 0.1);
    }

    /* 页脚合规商业规范 */
    .site-footer {
      background-color: var(--bg-darker);
      border-top: 1px solid var(--border-light);
      padding: 4rem 0 2rem 0;
      color: var(--text-dim);
      font-size: 0.88rem;
    }

    .footer-col-title {
      color: #fff;
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }

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

    .footer-links li {
      margin-bottom: 8px;
    }

    .footer-links a:hover {
      color: var(--neon-green);
    }

    .copyright-bar {
      margin-top: 3rem;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.82rem;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 12px;
    }

    @media (max-width: 991.98px) {
      .hero-h1 { font-size: 2.2rem; }
      .section-title { font-size: 1.75rem; }
      .stat-number { font-size: 2.4rem; }
    }

    @media (max-width: 576px) {
      .app-section { padding: 3.5rem 0; }
      .hero-h1 { font-size: 1.85rem; }
      .price-card { padding: 24px 18px; }
      .cta-banner-box { padding: 2.5rem 1.2rem; }
    }