/* roulang page: index */
:root {
            --ar-bg-dark: #090b10;
            --ar-bg-surface: #10141d;
            --ar-bg-card: #161b26;
            --ar-bg-card-hover: #1d2331;
            --ar-primary: #00d26a;
            --ar-primary-glow: rgba(0, 210, 106, 0.25);
            --ar-accent: #00b4d8;
            --ar-danger: #f72585;
            --ar-text-main: #f1f5f9;
            --ar-text-muted: #94a3b8;
            --ar-border: #242c3d;
            --ar-radius-sm: 6px;
            --ar-radius-md: 12px;
            --ar-radius-lg: 18px;
            --ar-transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        body {
            background-color: var(--ar-bg-dark);
            color: var(--ar-text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.65;
            overflow-x: hidden;
        }

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

        /* 顶部导航 */
        .site-header {
            background: rgba(9, 11, 16, 0.88);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--ar-border);
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .navbar-brand-logo {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand-logo .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--ar-primary);
            box-shadow: 0 0 10px var(--ar-primary);
        }
        .nav-link {
            color: var(--ar-text-muted) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 0.9rem !important;
            border-radius: var(--ar-radius-sm);
            transition: var(--ar-transition);
        }
        .nav-link:hover, .nav-link.active {
            color: #fff !important;
            background: rgba(255, 255, 255, 0.05);
        }
        .btn-nav-outline {
            border: 1px solid var(--ar-border);
            color: var(--ar-text-main);
            font-size: 0.88rem;
            padding: 0.45rem 1.1rem;
            border-radius: var(--ar-radius-sm);
            background: transparent;
            font-weight: 600;
        }
        .btn-nav-outline:hover {
            border-color: var(--ar-accent);
            color: var(--ar-accent);
            background: rgba(0, 180, 216, 0.08);
        }
        .btn-nav-primary {
            background: var(--ar-primary);
            color: #05160d;
            font-size: 0.88rem;
            padding: 0.45rem 1.2rem;
            border-radius: var(--ar-radius-sm);
            font-weight: 700;
            border: none;
            box-shadow: 0 4px 14px var(--ar-primary-glow);
        }
        .btn-nav-primary:hover {
            background: #00ea76;
            color: #000;
            transform: translateY(-1px);
        }

        /* 基础区块排版 */
        .section-padding {
            padding: 5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .section-header {
            margin-bottom: 3rem;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 210, 106, 0.1);
            color: var(--ar-primary);
            font-size: 0.82rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 30px;
            margin-bottom: 0.9rem;
            border: 1px solid rgba(0, 210, 106, 0.2);
            text-transform: uppercase;
        }
        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .section-subtitle {
            color: var(--ar-text-muted);
            font-size: 1.05rem;
            max-width: 680px;
        }

        /* Hero：科技与本地网络感 */
        .hero-section {
            position: relative;
            padding: 5.5rem 0 4.5rem;
            background: linear-gradient(180deg, rgba(9,11,16,0.85) 0%, rgba(9,11,16,0.96) 100%),
                        url('/assets/images/4461657389602142.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--ar-border);
        }
        .hero-badge-cluster {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 1.5rem;
        }
        .hero-badge {
            background: rgba(255,255,255,0.06);
            border: 1px solid var(--ar-border);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 0.82rem;
            color: var(--ar-accent);
        }
        .hero-title {
            font-size: 2.9rem;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 1.2rem;
            color: #fff;
        }
        .hero-title span {
            background: linear-gradient(90deg, #fff, #94a3b8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--ar-text-muted);
            margin-bottom: 2rem;
        }
        .server-ping-card {
            background: var(--ar-bg-card);
            border: 1px solid var(--ar-border);
            border-radius: var(--ar-radius-md);
            padding: 1.5rem;
            box-shadow: 0 16px 36px rgba(0,0,0,0.4);
        }

        /* 倒计时监控条 */
        .sync-counter-strip {
            background: var(--ar-bg-surface);
            border-radius: var(--ar-radius-md);
            border: 1px solid var(--ar-border);
            padding: 1.5rem 2rem;
        }
        .sync-val {
            font-family: monospace;
            font-size: 2rem;
            font-weight: 800;
            color: var(--ar-primary);
        }

        /* 卡片基础 */
        .ar-card {
            background: var(--ar-bg-card);
            border: 1px solid var(--ar-border);
            border-radius: var(--ar-radius-md);
            padding: 1.75rem;
            transition: var(--ar-transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .ar-card:hover {
            border-color: rgba(0, 210, 106, 0.4);
            transform: translateY(-4px);
            background: var(--ar-bg-card-hover);
        }
        .ar-card-icon {
            width: 48px;
            height: 48px;
            background: rgba(0, 210, 106, 0.08);
            color: var(--ar-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--ar-radius-sm);
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
            border: 1px solid rgba(0, 210, 106, 0.15);
        }

        /* 战役与权益卡 */
        .badge-status {
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: 4px;
            background: rgba(0, 180, 216, 0.15);
            color: var(--ar-accent);
            border: 1px solid rgba(0, 180, 216, 0.3);
        }
        .card-cover-thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--ar-radius-sm);
            margin-bottom: 1.2rem;
            border: 1px solid var(--ar-border);
        }

        /* 步骤流水线 */
        .step-timeline-node {
            display: flex;
            align-items: flex-start;
            gap: 1.25rem;
            margin-bottom: 1.8rem;
        }
        .step-index-circle {
            width: 40px;
            height: 40px;
            background: #1e2636;
            color: var(--ar-primary);
            font-weight: 800;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            border: 2px solid var(--ar-border);
        }

        /* 口碑评论条目 */
        .testimonial-item {
            background: rgba(22, 27, 38, 0.7);
            border: 1px solid var(--ar-border);
            border-radius: var(--ar-radius-md);
            padding: 1.5rem;
            height: 100%;
        }

        /* 页脚 */
        .site-footer {
            background: #06080b;
            border-top: 1px solid var(--ar-border);
            padding: 4.5rem 0 2rem;
            color: var(--ar-text-muted);
            font-size: 0.92rem;
        }
        .footer-heading {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.6rem;
        }
        .footer-bottom {
            margin-top: 3.5rem;
            padding-top: 1.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.85rem;
        }

        @media (max-width: 991.98px) {
            .hero-title {
                font-size: 2.3rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
        }

/* roulang page: category2 */
:root {
      --ar-bg-dark: #090b10;
      --ar-bg-surface: #10141d;
      --ar-bg-card: #161b26;
      --ar-bg-card-hover: #1d2331;
      --ar-primary: #00d26a;
      --ar-primary-glow: rgba(0, 210, 106, 0.25);
      --ar-accent: #00b4d8;
      --ar-danger: #f72585;
      --ar-text-main: #f1f5f9;
      --ar-text-muted: #94a3b8;
      --ar-border: #242c3d;
      --ar-radius-sm: 6px;
      --ar-radius-md: 12px;
      --ar-radius-lg: 18px;
      --ar-transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    body {
      background-color: var(--ar-bg-dark);
      color: var(--ar-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--ar-transition);
    }
    a:hover {
      color: var(--ar-primary);
    }
    /* 顶部导航 */
    .site-header {
      background: rgba(9, 11, 16, 0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--ar-border);
      position: sticky;
      top: 0;
      z-index: 1030;
    }
    .navbar-brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .navbar-brand-logo .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background-color: var(--ar-primary);
      box-shadow: 0 0 10px var(--ar-primary);
    }
    .nav-link {
      color: var(--ar-text-muted) !important;
      font-size: 0.95rem;
      font-weight: 500;
      padding: 0.5rem 0.9rem !important;
      border-radius: var(--ar-radius-sm);
      transition: var(--ar-transition);
    }
    .nav-link:hover, .nav-link.active {
      color: #fff !important;
      background: rgba(255, 255, 255, 0.05);
    }
    .btn-nav-outline {
      border: 1px solid var(--ar-border);
      color: var(--ar-text-main);
      font-size: 0.88rem;
      padding: 0.45rem 1.1rem;
      border-radius: var(--ar-radius-sm);
      background: transparent;
      font-weight: 600;
    }
    .btn-nav-outline:hover {
      border-color: var(--ar-accent);
      color: var(--ar-accent);
      background: rgba(0, 180, 216, 0.08);
    }
    .btn-nav-primary {
      background: var(--ar-primary);
      color: #05160d;
      font-size: 0.88rem;
      padding: 0.45rem 1.2rem;
      border-radius: var(--ar-radius-sm);
      font-weight: 700;
      border: none;
      box-shadow: 0 4px 14px var(--ar-primary-glow);
    }
    .btn-nav-primary:hover {
      background: #00ea76;
      color: #000;
      transform: translateY(-1px);
    }

    /* 布局排版与基础卡片 */
    .section-padding {
      padding: 5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-header {
      margin-bottom: 3rem;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 210, 106, 0.1);
      color: var(--ar-primary);
      font-size: 0.82rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 30px;
      margin-bottom: 0.9rem;
      border: 1px solid rgba(0, 210, 106, 0.2);
      text-transform: uppercase;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      margin-bottom: 0.8rem;
    }
    .section-subtitle {
      color: var(--ar-text-muted);
      font-size: 1.05rem;
      max-width: 720px;
    }

    /* Hero 地图与本地节点流感 */
    .hero-theatre {
      position: relative;
      padding: 5rem 0 4rem;
      background: linear-gradient(180deg, rgba(9,11,16,0.85) 0%, rgba(9,11,16,0.98) 100%),
                  url('/assets/images/5f6955a048520434.webp') center/cover no-repeat;
      border-bottom: 1px solid var(--ar-border);
    }
    .network-nodes-cluster {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 1.5rem;
    }
    .node-pill {
      background: rgba(16, 20, 29, 0.85);
      border: 1px solid var(--ar-border);
      border-radius: 20px;
      padding: 6px 14px;
      font-size: 0.82rem;
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }
    .node-pill .status-ping {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--ar-primary);
      box-shadow: 0 0 8px var(--ar-primary);
      animation: pulsePing 2s infinite;
    }
    @keyframes pulsePing {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
      100% { opacity: 1; transform: scale(1); }
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      color: #fff;
      margin-bottom: 1.2rem;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #00d26a, #00b4d8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hub-console {
      background: var(--ar-bg-surface);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      padding: 1.8rem;
      position: relative;
    }
    .console-stat-box {
      background: var(--ar-bg-card);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: var(--ar-radius-sm);
      padding: 1rem;
    }

    /* 剧场版卡片系统 */
    .ar-movie-card {
      background: var(--ar-bg-card);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      overflow: hidden;
      transition: var(--ar-transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .ar-movie-card:hover {
      border-color: var(--ar-primary);
      transform: translateY(-5px);
      box-shadow: 0 16px 30px rgba(0,0,0,0.5);
    }
    .ar-movie-poster {
      position: relative;
      height: 230px;
      overflow: hidden;
    }
    .ar-movie-poster img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .ar-movie-card:hover .ar-movie-poster img {
      transform: scale(1.08);
    }
    .ar-badge-corner {
      position: absolute;
      top: 12px;
      right: 12px;
      background: rgba(0, 0, 0, 0.75);
      border: 1px solid var(--ar-accent);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .ar-movie-body {
      padding: 1.6rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .param-pill {
      font-size: 0.78rem;
      padding: 2px 8px;
      background: rgba(255, 255, 255, 0.05);
      border-radius: 4px;
      color: var(--ar-text-muted);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    /* 参数卡 & 对比表 */
    .tech-spec-card {
      background: var(--ar-bg-surface);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      padding: 2rem;
    }
    .spec-progress-bar {
      height: 6px;
      background: rgba(255,255,255,0.06);
      border-radius: 3px;
      overflow: hidden;
      margin-top: 6px;
    }
    .spec-progress-val {
      height: 100%;
      background: linear-gradient(90deg, var(--ar-primary), var(--ar-accent));
      border-radius: 3px;
    }

    /* 流程图步进器 */
    .step-item {
      display: flex;
      gap: 1.25rem;
      position: relative;
    }
    .step-num {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--ar-bg-card);
      border: 2px solid var(--ar-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--ar-primary);
      flex-shrink: 0;
      box-shadow: 0 0 12px var(--ar-primary-glow);
    }

    /* 评价与证言卡片 */
    .review-card {
      background: var(--ar-bg-card);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      padding: 1.5rem;
      height: 100%;
    }
    .user-avatar-tag {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: rgba(0, 180, 216, 0.15);
      color: var(--ar-accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    /* 转化区与页脚 */
    .cta-banner {
      background: radial-gradient(circle at 50% 50%, rgba(0, 210, 106, 0.12) 0%, rgba(9, 11, 16, 0.95) 75%),
                  var(--ar-bg-surface);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-lg);
      padding: 3.5rem 2rem;
      text-align: center;
    }
    .site-footer {
      background: #06070a;
      border-top: 1px solid var(--ar-border);
      padding: 4rem 0 2rem;
    }
    .footer-heading {
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.2rem;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.6rem;
    }
    .footer-links a {
      color: var(--ar-text-muted);
      font-size: 0.9rem;
    }
    .footer-links a:hover {
      color: var(--ar-primary);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      margin-top: 3.5rem;
      padding-top: 1.8rem;
      color: #64748b;
      font-size: 0.85rem;
    }

    @media (max-width: 991px) {
      .hero-h1 { font-size: 2.2rem; }
      .section-title { font-size: 1.8rem; }
      .section-padding { padding: 3.5rem 0; }
    }

/* roulang page: category1 */
:root {
      --ar-bg-dark: #090b10;
      --ar-bg-surface: #10141d;
      --ar-bg-card: #161b26;
      --ar-bg-card-hover: #1d2331;
      --ar-primary: #00d26a;
      --ar-primary-glow: rgba(0, 210, 106, 0.25);
      --ar-accent: #00b4d8;
      --ar-danger: #f72585;
      --ar-text-main: #f1f5f9;
      --ar-text-muted: #94a3b8;
      --ar-border: #242c3d;
      --ar-radius-sm: 6px;
      --ar-radius-md: 12px;
      --ar-radius-lg: 18px;
      --ar-transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    body {
      background-color: var(--ar-bg-dark);
      color: var(--ar-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--ar-transition);
    }
    a:hover {
      color: var(--ar-primary);
    }
    .site-header {
      background: rgba(9, 11, 16, 0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--ar-border);
      position: sticky;
      top: 0;
      z-index: 1030;
    }
    .navbar-brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .navbar-brand-logo .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background-color: var(--ar-primary);
      box-shadow: 0 0 10px var(--ar-primary);
    }
    .nav-link {
      color: var(--ar-text-muted) !important;
      font-size: 0.95rem;
      font-weight: 500;
      padding: 0.5rem 0.9rem !important;
      border-radius: var(--ar-radius-sm);
      transition: var(--ar-transition);
    }
    .nav-link:hover, .nav-link.active {
      color: #fff !important;
      background: rgba(255, 255, 255, 0.05);
    }
    .btn-nav-outline {
      border: 1px solid var(--ar-border);
      color: var(--ar-text-main);
      font-size: 0.88rem;
      padding: 0.45rem 1.1rem;
      border-radius: var(--ar-radius-sm);
      background: transparent;
      font-weight: 600;
    }
    .btn-nav-outline:hover {
      border-color: var(--ar-accent);
      color: var(--ar-accent);
      background: rgba(0, 180, 216, 0.08);
    }
    .btn-nav-primary {
      background: var(--ar-primary);
      color: #05160d;
      font-size: 0.88rem;
      padding: 0.45rem 1.2rem;
      border-radius: var(--ar-radius-sm);
      font-weight: 700;
      border: none;
      box-shadow: 0 4px 14px var(--ar-primary-glow);
    }
    .btn-nav-primary:hover {
      background: #00ea76;
      color: #000;
      transform: translateY(-1px);
    }
    .section-padding {
      padding: 5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 210, 106, 0.1);
      color: var(--ar-primary);
      font-size: 0.82rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 30px;
      margin-bottom: 0.9rem;
      border: 1px solid rgba(0, 210, 106, 0.2);
      text-transform: uppercase;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      margin-bottom: 0.8rem;
    }
    .section-subtitle {
      color: var(--ar-text-muted);
      font-size: 1.05rem;
      max-width: 680px;
    }
    .ar-card {
      background: var(--ar-bg-card);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      padding: 1.75rem;
      transition: var(--ar-transition);
      height: 100%;
      position: relative;
      overflow: hidden;
    }
    .ar-card:hover {
      border-color: rgba(0, 210, 106, 0.4);
      transform: translateY(-4px);
      background: var(--ar-bg-card-hover);
    }
    .hero-edu-card {
      background: linear-gradient(135deg, rgba(22, 27, 38, 0.9) 0%, rgba(16, 20, 29, 0.95) 100%);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-lg);
      padding: 2.5rem;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
      position: relative;
    }
    .hero-edu-badge {
      position: absolute;
      top: 1.5rem;
      right: 1.5rem;
      background: linear-gradient(90deg, #f72585, #7209b7);
      color: #fff;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
    }
    .series-preview-box {
      background: #0d1117;
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      overflow: hidden;
    }
    .series-preview-box img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .series-preview-box:hover img {
      transform: scale(1.05);
    }
    .meta-chip {
      background: rgba(255,255,255,0.06);
      color: var(--ar-text-muted);
      border-radius: 4px;
      padding: 3px 8px;
      font-size: 0.78rem;
    }
    .meta-chip.active {
      background: rgba(0, 210, 106, 0.15);
      color: var(--ar-primary);
      border: 1px solid rgba(0, 210, 106, 0.3);
    }
    .episode-cell {
      background: var(--ar-bg-surface);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-sm);
      padding: 1.25rem;
      transition: var(--ar-transition);
    }
    .episode-cell:hover {
      background: var(--ar-bg-card-hover);
      border-color: var(--ar-primary);
      transform: translateX(4px);
    }
    .episode-number {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--ar-primary);
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(0, 210, 106, 0.08);
      border-radius: var(--ar-radius-sm);
    }
    .spec-metric-box {
      border-left: 3px solid var(--ar-primary);
      padding-left: 1.2rem;
      margin-bottom: 1.5rem;
    }
    .spec-metric-val {
      font-size: 1.8rem;
      font-weight: 800;
      color: #fff;
    }
    .quote-card {
      background: var(--ar-bg-surface);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      padding: 2rem;
      position: relative;
    }
    .quote-card::before {
      content: "\201C";
      font-size: 5rem;
      line-height: 1;
      font-family: Georgia, serif;
      position: absolute;
      top: 10px;
      right: 20px;
      color: rgba(255, 255, 255, 0.05);
    }
    .cta-banner {
      background: radial-gradient(circle at 80% 20%, rgba(0, 210, 106, 0.15) 0%, transparent 60%),
                  linear-gradient(180deg, #10141d 0%, #090b10 100%);
      border: 1px solid rgba(0, 210, 106, 0.3);
      border-radius: var(--ar-radius-lg);
      padding: 4rem 2rem;
    }
    .site-footer {
      background: #06070a;
      border-top: 1px solid var(--ar-border);
      padding: 4.5rem 0 2rem;
    }
    .footer-heading {
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.3rem;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.7rem;
    }
    .footer-links a {
      color: var(--ar-text-muted);
      font-size: 0.9rem;
    }
    .footer-links a:hover {
      color: var(--ar-primary);
      padding-left: 3px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 2rem;
      margin-top: 3.5rem;
    }
    @media (max-width: 991px) {
      .hero-edu-card { padding: 1.75rem; }
      .section-padding { padding: 3.5rem 0; }
    }

/* roulang page: category4 */
:root {
      --ar-bg-dark: #090b10;
      --ar-bg-surface: #10141d;
      --ar-bg-card: #161b26;
      --ar-bg-card-hover: #1d2331;
      --ar-primary: #00d26a;
      --ar-primary-glow: rgba(0, 210, 106, 0.25);
      --ar-accent: #00b4d8;
      --ar-danger: #f72585;
      --ar-text-main: #f1f5f9;
      --ar-text-muted: #94a3b8;
      --ar-border: #242c3d;
      --ar-radius-sm: 6px;
      --ar-radius-md: 12px;
      --ar-radius-lg: 18px;
      --ar-transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    body {
      background-color: var(--ar-bg-dark);
      color: var(--ar-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--ar-transition);
    }
    a:hover {
      color: var(--ar-primary);
    }
    /* 顶部导航 */
    .site-header {
      background: rgba(9, 11, 16, 0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--ar-border);
      position: sticky;
      top: 0;
      z-index: 1030;
    }
    .navbar-brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .navbar-brand-logo .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background-color: var(--ar-primary);
      box-shadow: 0 0 10px var(--ar-primary);
    }
    .nav-link {
      color: var(--ar-text-muted) !important;
      font-size: 0.95rem;
      font-weight: 500;
      padding: 0.5rem 0.9rem !important;
      border-radius: var(--ar-radius-sm);
      transition: var(--ar-transition);
    }
    .nav-link:hover, .nav-link.active {
      color: #fff !important;
      background: rgba(255, 255, 255, 0.05);
    }
    .btn-nav-outline {
      border: 1px solid var(--ar-border);
      color: var(--ar-text-main);
      font-size: 0.88rem;
      padding: 0.45rem 1.1rem;
      border-radius: var(--ar-radius-sm);
      background: transparent;
      font-weight: 600;
    }
    .btn-nav-outline:hover {
      border-color: var(--ar-accent);
      color: var(--ar-accent);
      background: rgba(0, 180, 216, 0.08);
    }
    .btn-nav-primary {
      background: var(--ar-primary);
      color: #05160d;
      font-size: 0.88rem;
      padding: 0.45rem 1.2rem;
      border-radius: var(--ar-radius-sm);
      font-weight: 700;
      border: none;
      box-shadow: 0 4px 14px var(--ar-primary-glow);
    }
    .btn-nav-primary:hover {
      background: #00ea76;
      color: #000;
      transform: translateY(-1px);
    }
    /* 基础通用板块 */
    .section-padding {
      padding: 5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-padding-alt {
      padding: 5rem 0;
      background-color: var(--ar-bg-surface);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-header {
      margin-bottom: 3rem;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 210, 106, 0.1);
      color: var(--ar-primary);
      font-size: 0.82rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 30px;
      margin-bottom: 0.9rem;
      border: 1px solid rgba(0, 210, 106, 0.2);
      text-transform: uppercase;
    }
    .section-tag.accent {
      background: rgba(0, 180, 216, 0.1);
      color: var(--ar-accent);
      border-color: rgba(0, 180, 216, 0.2);
    }
    .section-tag.danger {
      background: rgba(247, 37, 133, 0.1);
      color: var(--ar-danger);
      border-color: rgba(247, 37, 133, 0.2);
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      margin-bottom: 0.8rem;
    }
    .section-subtitle {
      color: var(--ar-text-muted);
      font-size: 1.05rem;
      max-width: 720px;
    }

    /* Hero：影视海报沉浸暗底 */
    .hero-immersive {
      position: relative;
      padding: 5.5rem 0 5rem;
      background: linear-gradient(180deg, rgba(9,11,16,0.82) 0%, rgba(9,11,16,0.98) 100%),
                  url('/assets/images/5f6955a048520434.webp') center/cover no-repeat;
      border-bottom: 1px solid var(--ar-border);
    }
    .poster-wrap {
      position: relative;
      border-radius: var(--ar-radius-lg);
      overflow: hidden;
      box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6);
      border: 1px solid var(--ar-border);
    }
    .poster-wrap img {
      width: 100%;
      height: 480px;
      object-fit: cover;
      display: block;
      transition: var(--ar-transition);
    }
    .poster-wrap:hover img {
      transform: scale(1.03);
    }
    .poster-overlay-badge {
      position: absolute;
      top: 15px;
      right: 15px;
      background: rgba(9, 11, 16, 0.85);
      backdrop-filter: blur(8px);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--ar-primary);
      border: 1px solid rgba(0, 210, 106, 0.3);
    }
    .poster-caption-bar {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 1.25rem;
      background: linear-gradient(0deg, rgba(9, 11, 16, 0.95) 0%, transparent 100%);
    }

    /* 叙事卡片与参数面板 */
    .ar-card {
      background: var(--ar-bg-card);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      padding: 1.75rem;
      transition: var(--ar-transition);
      height: 100%;
      position: relative;
    }
    .ar-card:hover {
      border-color: rgba(0, 210, 106, 0.4);
      transform: translateY(-4px);
      background: var(--ar-bg-card-hover);
    }
    .ar-card-icon {
      width: 48px;
      height: 48px;
      background: rgba(0, 210, 106, 0.08);
      color: var(--ar-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--ar-radius-sm);
      font-size: 1.35rem;
      margin-bottom: 1.25rem;
    }

    /* 机制剖析水平面板 */
    .analysis-panel {
      background: var(--ar-bg-card);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      padding: 2rem;
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
      transition: var(--ar-transition);
    }
    .analysis-panel:hover {
      border-color: rgba(0, 180, 216, 0.4);
      box-shadow: 0 10px 30px rgba(0, 180, 216, 0.06);
    }
    .analysis-badge {
      font-size: 0.75rem;
      letter-spacing: 0.5px;
      font-weight: 700;
      padding: 4px 8px;
      border-radius: 4px;
      display: inline-block;
      width: fit-content;
    }

    /* 对比表格 */
    .tech-table {
      width: 100%;
      margin-bottom: 0;
      color: var(--ar-text-main);
      border-collapse: separate;
      border-spacing: 0;
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      overflow: hidden;
    }
    .tech-table th {
      background: rgba(255, 255, 255, 0.04);
      padding: 1.1rem 1.4rem;
      font-weight: 700;
      border-bottom: 1px solid var(--ar-border);
      color: #fff;
    }
    .tech-table td {
      padding: 1.1rem 1.4rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      background: var(--ar-bg-card);
      vertical-align: middle;
    }
    .tech-table tr:last-child td {
      border-bottom: none;
    }

    /* 数据状态条与指标 */
    .metric-gauge-card {
      background: var(--ar-bg-card);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      padding: 1.5rem;
      text-align: center;
    }
    .metric-value {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--ar-primary);
      line-height: 1.2;
    }
    .metric-title {
      font-size: 0.88rem;
      color: var(--ar-text-muted);
      margin-top: 0.35rem;
    }

    /* 资讯列表项 */
    .intel-item {
      display: flex;
      gap: 1.25rem;
      padding: 1.25rem;
      background: var(--ar-bg-card);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      transition: var(--ar-transition);
      align-items: center;
    }
    .intel-item:hover {
      border-color: var(--ar-primary);
      transform: translateX(4px);
    }
    .intel-thumb {
      width: 120px;
      height: 80px;
      border-radius: var(--ar-radius-sm);
      object-fit: cover;
      flex-shrink: 0;
    }

    /* 行动收口条 */
    .cta-banner {
      background: linear-gradient(135deg, rgba(16, 20, 29, 0.95) 0%, rgba(22, 27, 38, 0.98) 100%),
                  url('/assets/images/4416e6f70ef24e5d.webp') center/cover no-repeat;
      border: 1px solid rgba(0, 210, 106, 0.3);
      border-radius: var(--ar-radius-lg);
      padding: 4rem 2.5rem;
      position: relative;
      overflow: hidden;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    }

    /* 页脚 */
    .site-footer {
      background: #06070a;
      border-top: 1px solid var(--ar-border);
      padding: 4.5rem 0 2.5rem;
    }
    .footer-heading {
      color: #fff;
      font-size: 0.95rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.7rem;
    }
    .footer-links a {
      color: var(--ar-text-muted);
      font-size: 0.88rem;
    }
    .footer-links a:hover {
      color: var(--ar-primary);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      margin-top: 3.5rem;
      padding-top: 1.8rem;
    }

    @media (max-width: 991px) {
      .poster-wrap img {
        height: 360px;
      }
      .section-title {
        font-size: 1.8rem;
      }
    }
    @media (max-width: 576px) {
      .poster-wrap img {
        height: 280px;
      }
      .cta-banner {
        padding: 2.5rem 1.5rem;
      }
      .intel-item {
        flex-direction: column;
        align-items: flex-start;
      }
      .intel-thumb {
        width: 100%;
        height: 160px;
      }
    }

/* roulang page: category3 */
:root {
      --ar-bg-dark: #090b10;
      --ar-bg-surface: #10141d;
      --ar-bg-card: #161b26;
      --ar-bg-card-hover: #1d2331;
      --ar-primary: #00d26a;
      --ar-primary-glow: rgba(0, 210, 106, 0.25);
      --ar-accent: #00b4d8;
      --ar-danger: #f72585;
      --ar-text-main: #f1f5f9;
      --ar-text-muted: #94a3b8;
      --ar-border: #242c3d;
      --ar-radius-sm: 6px;
      --ar-radius-md: 12px;
      --ar-radius-lg: 18px;
      --ar-transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    body {
      background-color: var(--ar-bg-dark);
      color: var(--ar-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--ar-transition);
    }
    a:hover {
      color: var(--ar-primary);
    }
    .site-header {
      background: rgba(9, 11, 16, 0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--ar-border);
      position: sticky;
      top: 0;
      z-index: 1030;
    }
    .navbar-brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .navbar-brand-logo .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background-color: var(--ar-primary);
      box-shadow: 0 0 10px var(--ar-primary);
    }
    .nav-link {
      color: var(--ar-text-muted) !important;
      font-size: 0.95rem;
      font-weight: 500;
      padding: 0.5rem 0.9rem !important;
      border-radius: var(--ar-radius-sm);
      transition: var(--ar-transition);
    }
    .nav-link:hover, .nav-link.active {
      color: #fff !important;
      background: rgba(255, 255, 255, 0.05);
    }
    .btn-nav-outline {
      border: 1px solid var(--ar-border);
      color: var(--ar-text-main);
      font-size: 0.88rem;
      padding: 0.45rem 1.1rem;
      border-radius: var(--ar-radius-sm);
      background: transparent;
      font-weight: 600;
    }
    .btn-nav-outline:hover {
      border-color: var(--ar-accent);
      color: var(--ar-accent);
      background: rgba(0, 180, 216, 0.08);
    }
    .btn-nav-primary {
      background: var(--ar-primary);
      color: #05160d;
      font-size: 0.88rem;
      padding: 0.45rem 1.2rem;
      border-radius: var(--ar-radius-sm);
      font-weight: 700;
      border: none;
      box-shadow: 0 4px 14px var(--ar-primary-glow);
    }
    .btn-nav-primary:hover {
      background: #00ea76;
      color: #000;
      transform: translateY(-1px);
    }
    .section-padding {
      padding: 4.5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 210, 106, 0.1);
      color: var(--ar-primary);
      font-size: 0.82rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 30px;
      margin-bottom: 0.9rem;
      border: 1px solid rgba(0, 210, 106, 0.2);
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      margin-bottom: 0.8rem;
    }
    .section-subtitle {
      color: var(--ar-text-muted);
      font-size: 1.05rem;
      max-width: 720px;
    }
    .hero-flash-section {
      background: linear-gradient(180deg, rgba(9,11,16,0.85) 0%, rgba(16,20,29,0.98) 100%),
                  url('/assets/images/5f6955a048520434.webp') center/cover no-repeat;
      padding: 4rem 0 3.5rem;
      border-bottom: 1px solid var(--ar-border);
    }
    .flash-ticker-bar {
      background: rgba(247, 37, 133, 0.12);
      border: 1px solid rgba(247, 37, 133, 0.35);
      border-radius: var(--ar-radius-sm);
      padding: 0.65rem 1.25rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 2rem;
    }
    .flash-pill {
      background: var(--ar-danger);
      color: #fff;
      font-weight: 800;
      font-size: 0.78rem;
      padding: 3px 8px;
      border-radius: 4px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .timer-badge {
      font-family: monospace;
      font-size: 1.1rem;
      font-weight: 800;
      color: #fff;
      background: rgba(0,0,0,0.5);
      padding: 2px 10px;
      border-radius: 4px;
      border: 1px solid var(--ar-border);
    }
    .flash-featured-card {
      background: var(--ar-bg-card);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      overflow: hidden;
      box-shadow: 0 20px 40px rgba(0,0,0,0.45);
    }
    .flash-featured-card img {
      width: 100%;
      height: 100%;
      min-height: 280px;
      object-fit: cover;
    }
    .ar-card {
      background: var(--ar-bg-card);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      padding: 1.75rem;
      transition: var(--ar-transition);
      height: 100%;
    }
    .ar-card:hover {
      border-color: rgba(0, 210, 106, 0.4);
      transform: translateY(-4px);
      background: var(--ar-bg-card-hover);
    }
    .ar-card-img-top {
      border-radius: var(--ar-radius-sm);
      overflow: hidden;
      margin-bottom: 1.25rem;
    }
    .ar-card-img-top img {
      width: 100%;
      height: 190px;
      object-fit: cover;
      transition: var(--ar-transition);
    }
    .ar-card:hover .ar-card-img-top img {
      transform: scale(1.04);
    }
    .metric-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      margin-right: 6px;
      margin-bottom: 6px;
    }
    .metric-primary {
      background: rgba(0, 210, 106, 0.12);
      color: var(--ar-primary);
      border: 1px solid rgba(0, 210, 106, 0.25);
    }
    .metric-accent {
      background: rgba(0, 180, 216, 0.12);
      color: var(--ar-accent);
      border: 1px solid rgba(0, 180, 216, 0.25);
    }
    .metric-danger {
      background: rgba(247, 37, 133, 0.12);
      color: var(--ar-danger);
      border: 1px solid rgba(247, 37, 133, 0.25);
    }
    .step-box {
      border-left: 2px dashed var(--ar-accent);
      padding-left: 1.5rem;
      position: relative;
      margin-bottom: 2rem;
    }
    .step-box::before {
      content: "";
      width: 12px;
      height: 12px;
      background: var(--ar-accent);
      border-radius: 50%;
      position: absolute;
      left: -7px;
      top: 4px;
      box-shadow: 0 0 8px var(--ar-accent);
    }
    .tech-spec-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-md);
      overflow: hidden;
      background: var(--ar-bg-card);
    }
    .tech-spec-table th, .tech-spec-table td {
      padding: 1rem 1.25rem;
      border-bottom: 1px solid var(--ar-border);
    }
    .tech-spec-table th {
      background: rgba(255, 255, 255, 0.03);
      color: var(--ar-text-muted);
      font-weight: 600;
      font-size: 0.9rem;
    }
    .tech-spec-table tr:last-child td {
      border-bottom: none;
    }
    .quote-box {
      background: rgba(16, 20, 29, 0.6);
      border-left: 4px solid var(--ar-primary);
      padding: 1.25rem 1.5rem;
      border-radius: 0 var(--ar-radius-md) var(--ar-radius-md) 0;
      margin: 1.25rem 0;
    }
    .cta-band {
      background: linear-gradient(135deg, #10141d 0%, #161b26 100%);
      border: 1px solid var(--ar-border);
      border-radius: var(--ar-radius-lg);
      padding: 3rem 2.5rem;
      position: relative;
      overflow: hidden;
    }
    .cta-band::before {
      content: '';
      position: absolute;
      top: -40%;
      right: -20%;
      width: 320px;
      height: 320px;
      background: var(--ar-primary-glow);
      filter: blur(80px);
      border-radius: 50%;
      pointer-events: none;
    }
    .site-footer {
      background: #06080b;
      border-top: 1px solid var(--ar-border);
      padding: 4.5rem 0 2.5rem;
      font-size: 0.92rem;
    }
    .footer-heading {
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links a {
      color: var(--ar-text-muted);
    }
    .footer-links a:hover {
      color: var(--ar-primary);
    }
    @media (max-width: 991px) {
      .section-title {
        font-size: 1.8rem;
      }
    }
    @media (max-width: 767px) {
      .section-padding {
        padding: 3.5rem 0;
      }
      .cta-band {
        padding: 2rem 1.25rem;
      }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}