/* roulang page: index */
:root {
      --bg-base: #0A0E14;
      --bg-surface: #11161E;
      --bg-elevated: #161B22;
      --border: #21262D;
      --primary: #00E5A0;
      --primary-glow: rgba(0,229,160,0.45);
      --secondary: #8B5CF6;
      --accent: #FFB800;
      --text-primary: #F0F6FC;
      --text-secondary: #8B949E;
      --text-muted: #6E7681;
      --success: #00E5A0;
      --warning: #FFB800;
      --danger: #FF4D4D;
      --sidebar-width: 250px;
      --radius-card: 14px;
      --radius-btn: 9px;
      --font-title: 'Rajdhani', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-num: 'Rajdhani', 'Orbitron', 'PingFang SC', sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html, body {
      margin: 0;
      padding: 0;
      background-color: var(--bg-base);
      color: var(--text-primary);
      font-family: var(--font-body);
      line-height: 1.6;
      font-size: 16px;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color .2s ease;
    }
    a:hover, a:focus {
      color: var(--text-primary);
    }

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

    h1, h2, h3, h4, h5, h6 {
      font-family: var(--font-title);
      font-weight: 800;
      letter-spacing: 0.5px;
      color: var(--text-primary);
      margin-bottom: 0.75rem;
    }

    p {
      color: var(--text-secondary);
      margin-bottom: 1rem;
    }

    .container-fluid.nav-container {
      max-width: 1400px;
      padding-left: 24px;
      padding-right: 24px;
    }

    .section-padding {
      padding-top: 72px;
      padding-bottom: 72px;
    }
    @media (max-width: 768px) {
      .section-padding {
        padding-top: 48px;
        padding-bottom: 48px;
      }
    }

    /* ---------- Sidebar / App Shell ---------- */
    .app-shell {
      display: flex;
      min-height: 100vh;
    }

    .sidebar {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: var(--sidebar-width);
      background: #0d1219;
      border-right: 1px solid var(--border);
      z-index: 1040;
      display: flex;
      flex-direction: column;
      transition: transform .3s ease;
    }

    .sidebar-header {
      padding: 24px 20px 16px;
      border-bottom: 1px solid var(--border);
    }

    .sidebar .logo {
      font-family: var(--font-title);
      font-size: 1.6rem;
      font-weight: 900;
      color: var(--primary);
      letter-spacing: 1px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .sidebar .logo i {
      color: var(--secondary);
      font-size: 1.8rem;
    }

    .sidebar-nav {
      flex: 1;
      padding: 20px 12px;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .sidebar-nav .nav-link {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 16px;
      border-radius: 8px;
      color: var(--text-secondary);
      font-weight: 600;
      font-size: 0.98rem;
      position: relative;
      transition: all .2s ease;
      border-left: 3px solid transparent;
    }
    .sidebar-nav .nav-link i {
      width: 20px;
      text-align: center;
      font-size: 1.1rem;
    }
    .sidebar-nav .nav-link:hover {
      background: var(--bg-elevated);
      color: var(--text-primary);
      border-left-color: var(--primary);
      box-shadow: 0 0 12px var(--primary-glow);
    }
    .sidebar-nav .nav-link.active {
      background: rgba(0,229,160,0.08);
      color: var(--primary);
      border-left-color: var(--primary);
      box-shadow: 0 0 14px var(--primary-glow);
    }

    .sidebar-footer {
      padding: 16px 20px;
      border-top: 1px solid var(--border);
      color: var(--text-muted);
      font-size: 0.8rem;
    }

    /* ---------- Mobile Topbar ---------- */
    .mobile-topbar {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 60px;
      background: #0d1219;
      border-bottom: 1px solid var(--border);
      z-index: 1050;
      align-items: center;
      padding: 0 16px;
      justify-content: space-between;
    }

    .mobile-topbar .logo {
      font-family: var(--font-title);
      font-size: 1.3rem;
      font-weight: 900;
      color: var(--primary);
    }
    .mobile-topbar .menu-toggle {
      background: transparent;
      border: 1px solid var(--border);
      color: var(--text-primary);
      border-radius: 6px;
      width: 40px;
      height: 40px;
      font-size: 1.4rem;
      transition: all .2s;
    }
    .mobile-topbar .menu-toggle:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: 0 0 10px var(--primary-glow);
    }

    .drawer-backdrop {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.6);
      z-index: 1045;
    }
    .drawer-backdrop.show {
      display: block;
    }

    @media (max-width: 991.98px) {
      .sidebar {
        transform: translateX(-100%);
        width: 280px;
      }
      .sidebar.mobile-open {
        transform: translateX(0);
      }
      .mobile-topbar {
        display: flex;
      }
      .main-content {
        padding-top: 60px;
      }
    }

    /* ---------- Main Content ---------- */
    .main-content {
      flex: 1;
      margin-left: var(--sidebar-width);
      min-width: 0;
      background: var(--bg-base);
    }
    @media (max-width: 991.98px) {
      .main-content {
        margin-left: 0;
      }
    }

    /* ---------- Hero ---------- */
    .hero-section {
      position: relative;
      padding: 90px 0 80px;
      background-image: linear-gradient(180deg, rgba(10,14,20,0.82) 0%, rgba(10,14,20,0.95) 100%), url('/assets/images/e1fb7b2b780d0280.webp');
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid var(--border);
    }
    .hero-content h1 {
      font-size: 3.2rem;
      font-weight: 900;
      line-height: 1.15;
      color: var(--text-primary);
      margin-bottom: 20px;
      text-shadow: 0 0 22px rgba(0,229,160,0.3);
    }
    .hero-content .lead {
      font-size: 1.15rem;
      color: var(--text-secondary);
      margin-bottom: 26px;
      max-width: 620px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 28px;
    }
    .btn-primary-cta {
      background: var(--primary);
      border: none;
      color: #0A0E14;
      font-weight: 700;
      padding: 12px 24px;
      border-radius: var(--radius-btn);
      transition: all .2s ease;
      letter-spacing: 0.5px;
    }
    .btn-primary-cta:hover, .btn-primary-cta:focus {
      background: #00f0ac;
      box-shadow: 0 0 18px var(--primary-glow);
      color: #0A0E14;
    }
    .btn-secondary-cta {
      background: transparent;
      border: 1px solid var(--text-secondary);
      color: var(--text-primary);
      font-weight: 600;
      padding: 12px 22px;
      border-radius: var(--radius-btn);
      transition: all .2s ease;
    }
    .btn-secondary-cta:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: 0 0 10px var(--primary-glow);
    }
    .hero-trust {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      align-items: center;
      color: var(--text-muted);
      font-size: 0.9rem;
    }
    .hero-trust span i {
      color: var(--accent);
      margin-right: 6px;
    }

    /* ---------- Section titles ---------- */
    .section-title {
      margin-bottom: 40px;
    }
    .section-title .eyebrow {
      display: inline-block;
      background: rgba(0,229,160,0.1);
      color: var(--primary);
      border: 1px solid rgba(0,229,160,0.3);
      border-radius: 6px;
      padding: 4px 12px;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 1px;
      margin-bottom: 12px;
    }
    .section-title h2 {
      font-size: 2.2rem;
      font-weight: 800;
    }
    .section-title p {
      font-size: 1.05rem;
      color: var(--text-secondary);
      max-width: 700px;
    }

    /* ---------- Cards ---------- */
    .card-custom {
      background: var(--bg-surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 24px;
      transition: all .25s ease;
      height: 100%;
    }
    .card-custom:hover {
      background: var(--bg-elevated);
      border-color: var(--primary);
      box-shadow: 0 10px 25px rgba(0,0,0,0.5), 0 0 16px var(--primary-glow);
      transform: translateY(-4px);
    }
    .card-custom .icon-box {
      width: 46px;
      height: 46px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      background: rgba(0,229,160,0.12);
      color: var(--primary);
      margin-bottom: 16px;
    }
    .card-custom h3 {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .card-custom p {
      font-size: 0.95rem;
      color: var(--text-secondary);
      margin-bottom: 0;
    }

    /* ---------- Pain Points ---------- */
    .pain-point-card {
      background: rgba(255,77,77,0.05);
      border: 1px solid rgba(255,77,77,0.2);
      border-radius: var(--radius-card);
      padding: 22px;
      height: 100%;
      transition: all .2s;
    }
    .pain-point-card h4 {
      color: var(--danger);
      font-size: 1.1rem;
      margin-bottom: 10px;
    }
    .pain-point-card p {
      color: var(--text-secondary);
      font-size: 0.9rem;
      margin-bottom: 0;
    }

    /* ---------- Steps ---------- */
    .step-wrap {
      display: flex;
      gap: 22px;
      align-items: flex-start;
    }
    .step-number {
      font-family: var(--font-num);
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--secondary);
      line-height: 1;
      min-width: 48px;
    }
    .step-content h4 {
      color: var(--text-primary);
      font-size: 1.2rem;
      margin-bottom: 8px;
    }

    /* ---------- Entry Matrix ---------- */
    .entry-card {
      position: relative;
      display: block;
      background: var(--bg-surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 28px;
      height: 100%;
      transition: all .25s ease;
      overflow: hidden;
    }
    .entry-card:hover {
      border-color: var(--primary);
      box-shadow: 0 0 18px var(--primary-glow);
      transform: translateY(-3px);
      text-decoration: none;
    }
    .entry-card h3 {
      color: var(--text-primary);
      margin-bottom: 8px;
    }
    .entry-card p {
      color: var(--text-secondary);
      font-size: 0.9rem;
      margin-bottom: 0;
    }

    /* ---------- News / List ---------- */
    .news-card {
      background: var(--bg-surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: all .2s;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      border-color: var(--primary);
      box-shadow: 0 0 15px var(--primary-glow);
    }
    .news-card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }
    .news-body {
      padding: 18px 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-body h5 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .news-body p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .news-meta {
      margin-top: auto;
      font-size: 0.8rem;
      color: var(--text-muted);
      display: flex;
      gap: 16px;
    }

    /* ---------- Metrics ---------- */
    .metric-card {
      background: linear-gradient(145deg, #11161E, #0d1219);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 26px 20px;
      text-align: center;
      transition: all .2s;
    }
    .metric-card:hover {
      border-color: var(--secondary);
      box-shadow: 0 0 14px rgba(139,92,246,0.4);
    }
    .metric-value {
      font-family: var(--font-num);
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.2;
    }
    .metric-label {
      color: var(--text-secondary);
      font-size: 0.9rem;
      margin-top: 6px;
    }

    /* ---------- Testimonials ---------- */
    .testimonial-card {
      background: var(--bg-surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 24px;
      position: relative;
    }
    .testimonial-card::before {
      content: "\201C";
      font-size: 4rem;
      color: var(--secondary);
      opacity: 0.5;
      position: absolute;
      top: 8px;
      left: 16px;
      line-height: 1;
    }
    .testimonial-text {
      color: var(--text-secondary);
      font-size: 0.95rem;
      padding-left: 40px;
      margin-bottom: 16px;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-left: 40px;
    }
    .testimonial-author .avatar-icon {
      width: 40px;
      height: 40px;
      background: rgba(0,229,160,0.15);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 700;
    }
    .testimonial-author .name {
      font-weight: 700;
      color: var(--text-primary);
      font-size: 0.9rem;
    }
    .testimonial-author .role {
      color: var(--text-muted);
      font-size: 0.8rem;
    }

    /* ---------- FAQ ---------- */
    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border);
      border-radius: 10px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: all .2s;
    }
    .faq-item.open {
      border-color: var(--primary);
      box-shadow: 0 0 12px var(--primary-glow);
    }
    .faq-question {
      padding: 16px 20px;
      color: var(--text-primary);
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: color .2s;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .3s ease;
      color: var(--text-secondary);
      padding: 0 20px;
    }
    .faq-item.open .faq-answer {
      max-height: 200px;
      padding-bottom: 16px;
    }

    /* ---------- CTA band ---------- */
    .cta-band {
      background-image: linear-gradient(135deg, rgba(0,229,160,0.12), rgba(139,92,246,0.1)), url('/assets/images/16d265b3ae89e44c.webp');
      background-size: cover;
      background-position: center;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 56px 32px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .cta-band h2 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 14px;
    }
    .cta-band p {
      font-size: 1.05rem;
      color: var(--text-secondary);
      max-width: 560px;
      margin: 0 auto 24px;
    }

    /* ---------- Footer ---------- */
    .footer-area {
      background: #0d1219;
      border-top: 1px solid var(--border);
      padding: 40px 0 24px;
      color: var(--text-muted);
    }
    .footer-area .footer-logo {
      font-family: var(--font-title);
      font-size: 1.4rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-links a {
      color: var(--text-muted);
      transition: color .2s;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border);
      margin-top: 30px;
      padding-top: 18px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      font-size: 0.8rem;
    }

    /* ---------- Miscellaneous ---------- */
    .badge-tag {
      background: rgba(0,229,160,0.1);
      color: var(--primary);
      border: 1px solid rgba(0,229,160,0.3);
      border-radius: 6px;
      padding: 4px 10px;
      font-size: 0.75rem;
      font-weight: 600;
    }
    .badge-purple {
      background: rgba(139,92,246,0.1);
      color: var(--secondary);
      border: 1px solid rgba(139,92,246,0.3);
    }
    .badge-accent {
      background: rgba(255,184,0,0.1);
      color: var(--accent);
      border: 1px solid rgba(255,184,0,0.3);
    }

    .divider-fade {
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--border), transparent);
      margin: 0;
    }

    .img-cover {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: 8px;
    }

    @media (max-width: 768px) {
      .hero-content h1 {
        font-size: 2.2rem;
      }
      .section-title h2 {
        font-size: 1.8rem;
      }
    }

/* roulang page: category2 */
:root {
            --bg-base: #0A0E14;
            --bg-surface: #11161E;
            --bg-elevated: #161B22;
            --border: #21262D;
            --primary: #00E5A0;
            --primary-glow: rgba(0,229,160,0.45);
            --secondary: #8B5CF6;
            --accent: #FFB800;
            --text-primary: #F0F6FC;
            --text-secondary: #8B949E;
            --text-muted: #6E7681;
            --success: #00E5A0;
            --warning: #FFB800;
            --danger: #FF4D4D;
            --sidebar-width: 250px;
            --radius-card: 14px;
            --radius-btn: 9px;
            --font-title: 'Rajdhani', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Rajdhani', 'Orbitron', 'PingFang SC', sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html, body {
            margin: 0;
            padding: 0;
            background-color: var(--bg-base);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            font-size: 16px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover, a:focus {
            color: var(--text-primary);
        }

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

        button, input, textarea, select {
            font-family: inherit;
        }

        .container-fluid.nav-container {
            max-width: 1400px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding-top: 56px;
            padding-bottom: 56px;
        }

        /* ============ Layout ============ */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: #0d1219;
            border-right: 1px solid var(--border);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            transition: transform .25s ease;
        }

        .sidebar-header {
            padding: 22px 20px 14px;
            border-bottom: 1px solid var(--border);
        }

        .sidebar .logo {
            font-family: var(--font-title);
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--primary);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar .logo i {
            color: var(--secondary);
            font-size: 1.8rem;
        }

        .sidebar-nav {
            flex: 1;
            padding: 18px 12px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.98rem;
            position: relative;
            transition: all .2s ease;
            border-left: 3px solid transparent;
        }

        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 1.1rem;
        }

        .sidebar-nav .nav-link:hover {
            background: var(--bg-elevated);
            color: var(--text-primary);
            border-left-color: var(--primary);
            box-shadow: 0 0 12px var(--primary-glow);
        }

        .sidebar-nav .nav-link.active {
            background: rgba(0,229,160,0.08);
            color: var(--primary);
            border-left-color: var(--primary);
            box-shadow: 0 0 14px var(--primary-glow);
        }

        .sidebar-footer {
            padding: 14px 20px;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.78rem;
            line-height: 1.5;
        }

        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            background: var(--bg-base);
        }

        /* Mobile topbar */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: #0d1219;
            border-bottom: 1px solid var(--border);
            z-index: 1050;
            align-items: center;
            padding: 0 16px;
            justify-content: space-between;
        }

        .mobile-topbar .logo {
            font-family: var(--font-title);
            font-size: 1.3rem;
            font-weight: 900;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .mobile-topbar .logo i {
            color: var(--secondary);
        }

        .mobile-topbar .menu-toggle {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-primary);
            border-radius: 6px;
            width: 40px;
            height: 40px;
            font-size: 1.4rem;
            transition: all .2s;
            cursor: pointer;
        }

        .mobile-topbar .menu-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        .drawer-backdrop {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            z-index: 1045;
        }
        .drawer-backdrop.show {
            display: block;
        }

        /* ============ Hero / Compact header ============ */
        .compact-hero {
            position: relative;
            padding: 54px 0 42px;
            background-image: linear-gradient(180deg, rgba(10,14,20,0.78) 0%, rgba(10,14,20,0.95) 100%), url('/assets/images/fd65c32cce4c67fd.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb-area {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .breadcrumb-area a {
            color: var(--text-muted);
        }
        .breadcrumb-area a:hover {
            color: var(--primary);
        }
        .breadcrumb-area .sep {
            margin: 0 4px;
            color: var(--text-muted);
        }

        .compact-hero h1 {
            font-size: 2.5rem;
            font-weight: 900;
            line-height: 1.2;
            color: var(--text-primary);
            text-shadow: 0 0 20px rgba(0,229,160,0.25);
            margin-bottom: 14px;
        }
        .compact-hero .lead {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin-bottom: 0;
        }

        /* ============ Section titles ============ */
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 1.9rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 720px;
            margin-bottom: 0;
        }

        /* ============ Cards ============ */
        .card-surface {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
        }
        .card-surface:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 26px rgba(0,229,160,0.12), 0 0 16px rgba(0,229,160,0.08);
            transform: translateY(-3px);
        }
        .card-img {
            aspect-ratio: 16/9;
            object-fit: cover;
            width: 100%;
        }
        .card-body-pad {
            padding: 18px 20px 20px;
        }
        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .card-text {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.55;
            margin-bottom: 12px;
        }
        .badge-soft {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            border: 1px solid rgba(0,229,160,0.35);
            background: rgba(0,229,160,0.08);
            color: var(--primary);
        }
        .badge-purple {
            border-color: rgba(139,92,246,0.4);
            background: rgba(139,92,246,0.1);
            color: #b79af8;
        }
        .badge-yellow {
            border-color: rgba(255,184,0,0.4);
            background: rgba(255,184,0,0.1);
            color: var(--accent);
        }

        /* ============ Filter chips ============ */
        .filter-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .filter-chip {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 0.88rem;
            font-weight: 500;
            cursor: pointer;
            transition: all .2s;
        }
        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-chip.active {
            background: rgba(0,229,160,0.1);
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 12px rgba(0,229,160,0.15);
        }

        /* ============ Buttons ============ */
        .btn-primary-cta {
            background: var(--primary);
            border: none;
            color: #0A0E14;
            font-weight: 700;
            padding: 11px 24px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            letter-spacing: 0.5px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-cta:hover, .btn-primary-cta:focus {
            background: #00f0ac;
            box-shadow: 0 0 18px var(--primary-glow);
            color: #0A0E14;
        }
        .btn-secondary-cta {
            background: transparent;
            border: 1px solid var(--text-secondary);
            color: var(--text-primary);
            font-weight: 600;
            padding: 11px 22px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary-cta:hover, .btn-secondary-cta:focus {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }
        .btn-ghost-sm {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: 6px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all .2s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-ghost-sm:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ============ Feature highlight ============ */
        .feature-highlight {
            background: linear-gradient(135deg, rgba(0,229,160,0.06), rgba(139,92,246,0.06));
            border: 1px solid rgba(0,229,160,0.2);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            height: 100%;
        }
        .feature-highlight .icon-box {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0,229,160,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .feature-highlight h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .feature-highlight p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            margin-bottom: 0;
        }

        /* ============ Stat bars ============ */
        .stat-line {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }
        .stat-line .stat-label {
            flex: 0 0 72px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 600;
        }
        .stat-line .bar-track {
            flex: 1;
            height: 8px;
            background: var(--bg-elevated);
            border-radius: 4px;
            overflow: hidden;
        }
        .stat-line .bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transition: width .4s ease;
        }
        .stat-line .stat-value {
            flex: 0 0 44px;
            text-align: right;
            font-family: var(--font-num);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        /* ============ Ranking list ============ */
        .rank-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }
        .rank-item:last-child {
            border-bottom: none;
        }
        .rank-num {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: var(--bg-elevated);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-num);
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .rank-num.top1 {
            background: rgba(255,184,0,0.1);
            color: var(--accent);
            border: 1px solid rgba(255,184,0,0.35);
        }
        .rank-num.top2 {
            background: rgba(0,229,160,0.1);
            color: var(--primary);
            border: 1px solid rgba(0,229,160,0.35);
        }
        .rank-num.top3 {
            background: rgba(139,92,246,0.1);
            color: #b79af8;
            border: 1px solid rgba(139,92,246,0.35);
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-name {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.95rem;
        }
        .rank-meta {
            color: var(--text-muted);
            font-size: 0.82rem;
        }
        .rank-tag {
            flex-shrink: 0;
        }

        /* ============ FAQ ============ */
        .accordion-custom .accordion-item {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: 10px !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .accordion-custom .accordion-button {
            background: var(--bg-surface);
            color: var(--text-primary);
            font-weight: 600;
            padding: 16px 20px;
            box-shadow: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--bg-elevated);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-custom .accordion-button::after {
            filter: invert(70%) sepia(20%) saturate(500%) hue-rotate(90deg);
        }
        .accordion-custom .accordion-body {
            background: var(--bg-elevated);
            color: var(--text-secondary);
            padding: 16px 20px;
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* ============ CTA band ============ */
        .cta-band {
            background-image: linear-gradient(180deg, rgba(10,14,20,0.75) 0%, rgba(10,14,20,0.95) 100%), url('/assets/images/16d265b3ae89e44c.webp');
            background-size: cover;
            background-position: center;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            text-align: center;
        }
        .cta-band h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .cta-band p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            font-size: 1rem;
        }

        /* ============ Footer ============ */
        .footer-area {
            border-top: 1px solid var(--border);
            background: #0d1219;
            padding: 48px 0 28px;
            margin-top: 0;
            color: var(--text-secondary);
        }
        .footer-logo {
            font-family: var(--font-title);
            font-size: 1.4rem;
            font-weight: 900;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-logo i {
            color: var(--secondary);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color .2s;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: space-between;
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* ============ Responsive ============ */
        @media (max-width: 1199.98px) {
            :root {
                --sidebar-width: 220px;
            }
            .compact-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 991.98px) {
            .sidebar {
                transform: translateX(-100%);
                width: 250px;
            }
            .sidebar.mobile-open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }
            .mobile-topbar {
                display: flex;
            }
            .compact-hero {
                padding-top: 40px;
                padding-bottom: 34px;
            }
            .compact-hero h1 {
                font-size: 1.9rem;
            }
        }

        @media (max-width: 767.98px) {
            .compact-hero h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-band {
                padding: 26px 18px;
            }
            .cta-band h2 {
                font-size: 1.4rem;
            }
            .stat-line {
                flex-wrap: wrap;
                gap: 8px;
            }
            .stat-line .stat-label {
                flex: 0 0 100%;
            }
            .stat-line .stat-value {
                flex: 0 0 auto;
            }
            .rank-item {
                flex-wrap: wrap;
                gap: 10px;
            }
        }

        @media (max-width: 519.98px) {
            .compact-hero h1 {
                font-size: 1.4rem;
            }
            .filter-chips {
                gap: 8px;
            }
            .filter-chip {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .btn-primary-cta,
            .btn-secondary-cta {
                width: 100%;
                justify-content: center;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }
            .cta-band h2 {
                font-size: 1.25rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-base: #0A0E14;
            --bg-surface: #11161E;
            --bg-elevated: #161B22;
            --border: #21262D;
            --primary: #00E5A0;
            --primary-glow: rgba(0, 229, 160, 0.45);
            --secondary: #8B5CF6;
            --accent: #FFB800;
            --text-primary: #F0F6FC;
            --text-secondary: #8B949E;
            --text-muted: #6E7681;
            --success: #00E5A0;
            --warning: #FFB800;
            --danger: #FF4D4D;
            --sidebar-width: 250px;
            --radius-card: 14px;
            --radius-btn: 9px;
            --font-title: 'Rajdhani', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Rajdhani', 'Orbitron', 'PingFang SC', sans-serif;
        }

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

        html,
        body {
            margin: 0;
            padding: 0;
            background-color: var(--bg-base);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease;
        }

        a:hover,
        a:focus {
            color: var(--text-primary);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

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

        .container-fluid.nav-container {
            max-width: 1400px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding-top: 56px;
            padding-bottom: 56px;
        }

        .page-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            background: var(--bg-base);
        }

        /* ========== Sidebar ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: #0d1219;
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 1040;
            transition: transform .28s ease;
        }

        .sidebar-header {
            padding: 24px 20px 16px;
            border-bottom: 1px solid var(--border);
        }

        .sidebar .logo {
            font-family: var(--font-title);
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--primary);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar .logo i {
            color: var(--secondary);
            font-size: 1.8rem;
        }

        .sidebar-nav {
            flex: 1;
            padding: 20px 12px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            overflow-y: auto;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.98rem;
            position: relative;
            transition: all .2s ease;
            border-left: 3px solid transparent;
        }

        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 1.1rem;
        }

        .sidebar-nav .nav-link:hover {
            background: var(--bg-elevated);
            color: var(--text-primary);
            border-left-color: var(--primary);
            box-shadow: 0 0 12px var(--primary-glow);
        }

        .sidebar-nav .nav-link.active {
            background: rgba(0, 229, 160, 0.08);
            color: var(--primary);
            border-left-color: var(--primary);
            box-shadow: 0 0 14px var(--primary-glow);
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* ========== Mobile Topbar & Drawer ========== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: #0d1219;
            border-bottom: 1px solid var(--border);
            z-index: 1050;
            align-items: center;
            padding: 0 16px;
            justify-content: space-between;
        }

        .mobile-topbar .logo {
            font-family: var(--font-title);
            font-size: 1.3rem;
            font-weight: 900;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .mobile-topbar .logo i {
            color: var(--secondary);
        }

        .mobile-topbar .menu-toggle {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-primary);
            border-radius: 6px;
            width: 40px;
            height: 40px;
            font-size: 1.4rem;
            transition: all .2s;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .mobile-topbar .menu-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        .drawer-backdrop {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1045;
        }

        .drawer-backdrop.show {
            display: block;
        }

        .sidebar.mobile-open {
            transform: translateX(0);
        }

        /* ========== Page Header ========== */
        .page-header {
            padding: 32px 0 24px;
            border-bottom: 1px solid var(--border);
            background: linear-gradient(180deg, rgba(17, 22, 30, 0.6) 0%, rgba(10, 14, 20, 0.9) 100%);
        }

        .breadcrumb-area {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .breadcrumb-area a {
            color: var(--text-secondary);
        }

        .breadcrumb-area a:hover {
            color: var(--primary);
        }

        .breadcrumb-area .sep {
            color: var(--text-muted);
        }

        .breadcrumb-area .current {
            color: var(--primary);
        }

        .page-header h1 {
            font-size: 2.4rem;
            font-weight: 900;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }

        .page-header .page-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 0;
        }

        /* ========== Filter Bar ========== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            margin-bottom: 28px;
        }

        .filter-bar .filter-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 600;
            margin-right: 4px;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            border-radius: 20px;
            border: 1px solid var(--border);
            background: var(--bg-surface);
            color: var(--text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all .2s ease;
            white-space: nowrap;
        }

        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--text-primary);
            box-shadow: 0 0 8px var(--primary-glow);
        }

        .filter-chip.active {
            background: rgba(0, 229, 160, 0.12);
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        /* ========== Cards ========== */
        .card {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            transition: all .25s ease;
            overflow: hidden;
        }

        .card:hover {
            border-color: var(--primary);
            box-shadow: 0 0 18px var(--primary-glow);
            transform: translateY(-3px);
            background: var(--bg-elevated);
        }

        .card .card-img-top {
            aspect-ratio: 16/9;
            object-fit: cover;
            background: #1a2029;
            width: 100%;
        }

        .card-body {
            padding: 20px;
        }

        .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-text {
            color: var(--text-secondary);
            font-size: 0.88rem;
            margin-bottom: 12px;
        }

        .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .card-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        /* ========== Buttons ========== */
        .btn-primary-cta {
            background: var(--primary);
            border: none;
            color: #0A0E14;
            font-weight: 700;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            letter-spacing: 0.5px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-cta:hover,
        .btn-primary-cta:focus {
            background: #00f0ac;
            box-shadow: 0 0 18px var(--primary-glow);
            color: #0A0E14;
        }

        .btn-secondary-cta {
            background: transparent;
            border: 1px solid var(--text-secondary);
            color: var(--text-primary);
            font-weight: 600;
            padding: 11px 22px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary-cta:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        .btn-sm-cta {
            padding: 6px 14px;
            font-size: 0.8rem;
            border-radius: 6px;
            font-weight: 600;
        }

        /* ========== Badges ========== */
        .badge-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            border: 1px solid;
            transition: all .2s ease;
        }

        .badge-primary {
            background: rgba(0, 229, 160, 0.1);
            border-color: rgba(0, 229, 160, 0.4);
            color: var(--primary);
        }

        .badge-secondary {
            background: rgba(139, 92, 246, 0.1);
            border-color: rgba(139, 92, 246, 0.4);
            color: var(--secondary);
        }

        .badge-accent {
            background: rgba(255, 184, 0, 0.1);
            border-color: rgba(255, 184, 0, 0.4);
            color: var(--accent);
        }

        .badge-danger {
            background: rgba(255, 77, 77, 0.1);
            border-color: rgba(255, 77, 77, 0.4);
            color: var(--danger);
        }

        /* ========== Section Titles ========== */
        .section-title {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 28px;
            max-width: 680px;
        }

        /* ========== Rank List ========== */
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 18px;
            border-radius: 10px;
            background: var(--bg-surface);
            border: 1px solid var(--border);
            margin-bottom: 10px;
            transition: all .2s ease;
        }

        .rank-item:hover {
            border-color: var(--primary);
            box-shadow: 0 0 12px var(--primary-glow);
            background: var(--bg-elevated);
        }

        .rank-number {
            font-family: var(--font-num);
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            min-width: 48px;
            text-align: center;
        }

        .rank-number.top1 {
            color: var(--accent);
            font-size: 2rem;
            text-shadow: 0 0 14px rgba(255, 184, 0, 0.5);
        }

        .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-name {
            font-weight: 700;
            color: var(--text-primary);
            font-size: 0.95rem;
            margin-bottom: 2px;
        }

        .rank-detail {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .rank-score {
            font-family: var(--font-num);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
        }

        /* ========== Resource Cards ========== */
        .resource-card {
            padding: 20px;
            border-radius: var(--radius-card);
            background: var(--bg-surface);
            border: 1px solid var(--border);
            transition: all .25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .resource-card:hover {
            border-color: var(--secondary);
            box-shadow: 0 0 14px rgba(139, 92, 246, 0.3);
            transform: translateY(-2px);
            background: var(--bg-elevated);
        }

        .resource-icon {
            font-size: 1.8rem;
            color: var(--secondary);
            margin-bottom: 12px;
        }

        .resource-title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .resource-text {
            font-size: 0.85rem;
            color: var(--text-secondary);
            flex: 1;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding-top: 48px;
            padding-bottom: 48px;
        }

        .accordion-item {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 10px;
            overflow: hidden;
        }

        .accordion-item .accordion-button {
            background: var(--bg-surface);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 16px 20px;
            border: none;
            border-radius: 10px;
            transition: all .2s ease;
        }

        .accordion-item .accordion-button:hover {
            color: var(--primary);
        }

        .accordion-item .accordion-button:not(.collapsed) {
            background: rgba(0, 229, 160, 0.08);
            color: var(--primary);
            box-shadow: none;
            border-bottom: 1px solid var(--border);
        }

        .accordion-item .accordion-body {
            background: var(--bg-surface);
            color: var(--text-secondary);
            font-size: 0.9rem;
            padding: 16px 20px;
        }

        .accordion-button::after {
            filter: invert(0.7);
        }

        .accordion-button:not(.collapsed)::after {
            filter: invert(0.9);
        }

        /* ========== Footer ========== */
        .footer-area {
            background: #0d1219;
            border-top: 1px solid var(--border);
            padding: 40px 0 20px;
            margin-top: 20px;
        }

        .footer-logo {
            font-family: var(--font-title);
            font-size: 1.3rem;
            font-weight: 900;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }

        .footer-logo i {
            color: var(--secondary);
        }

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

        .footer-links li {
            margin-bottom: 6px;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            transition: all .2s ease;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            margin-top: 24px;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.8rem;
            gap: 8px;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background-image: linear-gradient(180deg, rgba(10, 14, 20, 0.85) 0%, rgba(10, 14, 20, 0.95) 100%), url('/assets/images/eed635e5668d5e59.webp');
            background-size: cover;
            background-position: center;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 40px 32px;
            margin-top: 12px;
        }

        .cta-section h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .cta-section p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 18px;
            max-width: 540px;
        }

        /* ========== Featured ========== */
        .featured-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all .25s ease;
            background: var(--bg-surface);
            height: 100%;
        }

        .featured-card:hover {
            border-color: var(--accent);
            box-shadow: 0 0 18px rgba(255, 184, 0, 0.3);
            transform: translateY(-3px);
        }

        .featured-card img {
            aspect-ratio: 16/9;
            object-fit: cover;
            width: 100%;
        }

        .featured-card .featured-body {
            padding: 16px 18px;
        }

        .featured-card .featured-title {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .featured-card .featured-text {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1199.98px) {
            :root {
                --sidebar-width: 220px;
            }
            .page-header h1 {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 991.98px) {
            .sidebar {
                transform: translateX(-100%);
                width: 260px;
                box-shadow: 4px 0 20px rgba(0, 0, 0, 0.5);
            }
            .sidebar.mobile-open {
                transform: translateX(0);
            }
            .mobile-topbar {
                display: flex;
            }
            .page-content {
                margin-left: 0;
                padding-top: 60px;
            }
            .drawer-backdrop.show {
                display: block;
            }
            .page-header h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-padding {
                padding-top: 40px;
                padding-bottom: 40px;
            }
        }

        @media (max-width: 767.98px) {
            .page-header h1 {
                font-size: 1.5rem;
            }
            .page-header .page-subtitle {
                font-size: 0.88rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .card-body {
                padding: 16px;
            }
            .cta-section {
                padding: 28px 20px;
            }
            .cta-section h2 {
                font-size: 1.35rem;
            }
            .rank-item {
                padding: 10px 12px;
                gap: 10px;
            }
            .rank-number {
                font-size: 1.2rem;
                min-width: 36px;
            }
            .rank-number.top1 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 575.98px) {
            .page-header h1 {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.2rem;
            }
            .filter-chip {
                padding: 5px 12px;
                font-size: 0.75rem;
            }
            .btn-primary-cta,
            .btn-secondary-cta {
                padding: 10px 16px;
                font-size: 0.85rem;
                width: 100%;
                justify-content: center;
            }
            .card-title {
                font-size: 0.95rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-padding {
                padding-top: 32px;
                padding-bottom: 32px;
            }
            .breadcrumb-area {
                font-size: 0.75rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-base: #0A0E14;
            --bg-surface: #11161E;
            --bg-elevated: #161B22;
            --border: #21262D;
            --primary: #00E5A0;
            --primary-glow: rgba(0, 229, 160, 0.45);
            --secondary: #8B5CF6;
            --accent: #FFB800;
            --text-primary: #F0F6FC;
            --text-secondary: #8B949E;
            --text-muted: #6E7681;
            --success: #00E5A0;
            --warning: #FFB800;
            --danger: #FF4D4D;
            --sidebar-width: 250px;
            --radius-card: 14px;
            --radius-btn: 9px;
            --font-title: 'Rajdhani', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Rajdhani', 'Orbitron', 'PingFang SC', sans-serif;
            --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 20px var(--primary-glow);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            padding: 0;
            background-color: var(--bg-base);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover,
        a:focus {
            color: var(--text-primary);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-title);
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            margin-top: 0;
        }

        h1 {
            font-size: 2.6rem;
            line-height: 1.2;
        }

        h2 {
            font-size: 1.9rem;
            line-height: 1.25;
            margin-bottom: 1.5rem;
        }

        h3 {
            font-size: 1.3rem;
            line-height: 1.35;
            margin-bottom: 0.75rem;
        }

        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }

        .container-fluid.nav-container {
            max-width: 1400px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        .section-padding-sm {
            padding-top: 40px;
            padding-bottom: 40px;
        }

        /* ===== Sidebar ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: #0D1219;
            border-right: 1px solid var(--border);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            transition: transform .3s ease;
        }

        .sidebar-header {
            padding: 24px 20px 16px;
            border-bottom: 1px solid var(--border);
        }

        .sidebar .logo,
        .mobile-topbar .logo {
            font-family: var(--font-title);
            font-size: 1.55rem;
            font-weight: 900;
            color: var(--primary);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .sidebar .logo i,
        .mobile-topbar .logo i {
            color: var(--secondary);
            font-size: 1.7rem;
        }

        .sidebar-nav {
            flex: 1;
            padding: 18px 12px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            overflow-y: auto;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            position: relative;
            transition: all .2s ease;
            border-left: 3px solid transparent;
            text-decoration: none;
        }

        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
        }

        .sidebar-nav .nav-link:hover {
            background: var(--bg-elevated);
            color: var(--text-primary);
            border-left-color: var(--primary);
            box-shadow: 0 0 12px var(--primary-glow);
        }

        .sidebar-nav .nav-link.active {
            background: rgba(0, 229, 160, 0.08);
            color: var(--primary);
            border-left-color: var(--primary);
            box-shadow: 0 0 14px var(--primary-glow);
        }

        .sidebar-footer {
            padding: 14px 20px;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.78rem;
            line-height: 1.5;
        }

        .sidebar-footer .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 10px;
        }

        .sidebar-footer .footer-social a {
            color: var(--text-secondary);
            font-size: 1rem;
            transition: color .2s;
        }

        .sidebar-footer .footer-social a:hover {
            color: var(--primary);
        }

        /* ===== Mobile Topbar ===== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: #0D1219;
            border-bottom: 1px solid var(--border);
            z-index: 1050;
            align-items: center;
            padding: 0 16px;
            justify-content: space-between;
        }

        .mobile-topbar .logo {
            font-size: 1.25rem;
        }

        .mobile-topbar .logo i {
            font-size: 1.4rem;
        }

        .menu-toggle {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-primary);
            border-radius: 6px;
            width: 42px;
            height: 42px;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all .2s;
        }

        .menu-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        .drawer-backdrop {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.65);
            z-index: 1045;
            opacity: 0;
            transition: opacity .3s ease;
        }

        .drawer-backdrop.show {
            display: block;
            opacity: 1;
        }

        /* ===== Main Content ===== */
        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            background: var(--bg-base);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrapper {
            padding: 28px 0 0;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
        }

        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom li+li::before {
            content: '/';
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .breadcrumb-custom a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color .2s;
        }

        .breadcrumb-custom a:hover {
            color: var(--primary);
        }

        .breadcrumb-custom .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Category Header ===== */
        .category-header {
            padding: 28px 0 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 32px;
        }

        .category-header h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .category-header h1 .highlight {
            color: var(--primary);
            text-shadow: 0 0 18px var(--primary-glow);
        }

        .category-header .summary {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
        }

        /* ===== Filter Bar ===== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            margin-bottom: 28px;
        }

        .filter-label {
            font-weight: 600;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-right: 4px;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 20px;
            border: 1px solid var(--border);
            background: var(--bg-surface);
            color: var(--text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all .2s ease;
            user-select: none;
        }

        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--text-primary);
            background: var(--bg-elevated);
        }

        .filter-tag.active {
            background: rgba(0, 229, 160, 0.1);
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        /* ===== Player Card ===== */
        .player-card {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all .25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .player-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card), var(--shadow-glow);
            transform: translateY(-3px);
        }

        .player-card .player-img {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: var(--bg-elevated);
        }

        .player-card .player-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .player-card:hover .player-img img {
            transform: scale(1.05);
        }

        .player-card .rank-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(10, 14, 20, 0.85);
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: 6px;
            padding: 4px 10px;
            font-family: var(--font-num);
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            z-index: 2;
        }

        .player-card .position-tag {
            position: absolute;
            top: 10px;
            right: 10px;
            background: rgba(139, 92, 246, 0.8);
            color: #fff;
            border-radius: 6px;
            padding: 4px 10px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            z-index: 2;
        }

        .player-card .player-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .player-card .player-name {
            font-family: var(--font-title);
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 2px;
        }

        .player-card .player-team {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }

        .player-card .stat-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 8px;
            margin-top: auto;
        }

        .player-card .stat-item {
            text-align: center;
            background: var(--bg-elevated);
            border-radius: 8px;
            padding: 10px 6px;
        }

        .player-card .stat-value {
            font-family: var(--font-num);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .player-card .stat-label {
            font-size: 0.7rem;
            color: var(--text-muted);
            letter-spacing: 0.5px;
            margin-top: 2px;
        }

        /* ===== Featured Section ===== */
        .featured-card {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all .25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            border-color: var(--secondary);
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
            transform: translateY(-3px);
        }

        .featured-card .featured-img {
            height: 160px;
            overflow: hidden;
        }

        .featured-card .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .featured-card:hover .featured-img img {
            transform: scale(1.04);
        }

        .featured-card .featured-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card .featured-title {
            font-family: var(--font-title);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .featured-card .featured-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }

        /* ===== Stats Panel ===== */
        .stats-panel {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            height: 100%;
        }

        .stats-panel .stats-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
            flex-wrap: wrap;
            gap: 8px;
        }

        .stats-panel .stats-title {
            font-family: var(--font-title);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .stats-panel .stats-badge {
            font-size: 0.7rem;
            color: var(--primary);
            background: rgba(0, 229, 160, 0.1);
            border: 1px solid rgba(0, 229, 160, 0.3);
            border-radius: 4px;
            padding: 3px 8px;
        }

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

        .ranking-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }

        .ranking-list li:last-child {
            border-bottom: none;
        }

        .ranking-list .rank-num {
            font-family: var(--font-num);
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--accent);
            width: 32px;
            flex-shrink: 0;
            text-align: center;
        }

        .ranking-list .rank-num.top1 {
            color: var(--primary);
            text-shadow: 0 0 12px var(--primary-glow);
            font-size: 1.3rem;
        }

        .ranking-list .rank-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-list .rank-name {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.92rem;
        }

        .ranking-list .rank-team {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .ranking-list .rank-value {
            font-family: var(--font-num);
            font-weight: 700;
            color: var(--text-primary);
            font-size: 1rem;
        }

        /* ===== Resource Card ===== */
        .resource-card {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 20px;
            height: 100%;
            transition: all .25s ease;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .resource-card:hover {
            border-color: var(--accent);
            box-shadow: 0 0 14px rgba(255, 184, 0, 0.2);
            transform: translateY(-2px);
        }

        .resource-card .resource-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            background: rgba(139, 92, 246, 0.12);
            color: var(--secondary);
            margin-bottom: 4px;
        }

        .resource-card .resource-title {
            font-family: var(--font-title);
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
        }

        .resource-card .resource-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.55;
            flex: 1;
        }

        /* ===== CTA Band ===== */
        .cta-band {
            background: var(--bg-elevated);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 40px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(0, 229, 160, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-band h3 {
            font-size: 1.6rem;
            margin-bottom: 12px;
        }

        .cta-band p {
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 22px;
            font-size: 0.95rem;
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: 10px !important;
            margin-bottom: 10px;
            overflow: hidden;
        }

        .faq-accordion .accordion-button {
            background: var(--bg-surface);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
            transition: all .2s;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--bg-elevated);
            color: var(--primary);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 2px var(--primary-glow);
            border-color: var(--primary);
        }

        .faq-accordion .accordion-button::after {
            filter: invert(60%) sepia(80%) saturate(400%) hue-rotate(110deg);
        }

        .faq-accordion .accordion-body {
            background: var(--bg-surface);
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            padding: 16px 20px 20px;
        }

        /* ===== Buttons ===== */
        .btn-primary-cta {
            background: var(--primary);
            border: none;
            color: #0A0E14;
            font-weight: 700;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            letter-spacing: 0.5px;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-cta:hover,
        .btn-primary-cta:focus {
            background: #00F0AC;
            box-shadow: 0 0 18px var(--primary-glow);
            color: #0A0E14;
        }

        .btn-secondary-cta {
            background: transparent;
            border: 1px solid var(--text-secondary);
            color: var(--text-primary);
            font-weight: 600;
            padding: 12px 22px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary-cta:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        /* ===== Footer ===== */
        .footer-area {
            background: #0D1219;
            border-top: 1px solid var(--border);
            padding: 40px 0 24px;
            margin-top: 0;
        }

        .footer-logo {
            font-family: var(--font-title);
            font-size: 1.4rem;
            font-weight: 900;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }

        .footer-logo i {
            color: var(--secondary);
            font-size: 1.5rem;
        }

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

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

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            text-decoration: none;
            transition: color .2s;
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            margin-top: 28px;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199.98px) {
            h1 {
                font-size: 2.2rem;
            }

            .category-header h1 {
                font-size: 2.1rem;
            }

            .player-card .player-img {
                height: 150px;
            }
        }

        @media (max-width: 991.98px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: 4px 0 30px rgba(0, 0, 0, 0.5);
            }

            .sidebar.mobile-open {
                transform: translateX(0);
            }

            .mobile-topbar {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }

            h1 {
                font-size: 2rem;
            }

            .category-header h1 {
                font-size: 1.85rem;
            }

            .section-padding {
                padding-top: 48px;
                padding-bottom: 48px;
            }

            .section-padding-sm {
                padding-top: 28px;
                padding-bottom: 28px;
            }
        }

        @media (max-width: 767.98px) {
            .container-fluid.nav-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            h1 {
                font-size: 1.7rem;
            }

            h2 {
                font-size: 1.45rem;
            }

            h3 {
                font-size: 1.15rem;
            }

            .category-header h1 {
                font-size: 1.55rem;
            }

            .category-header {
                padding: 18px 0 14px;
                margin-bottom: 20px;
            }

            .player-card .player-img {
                height: 140px;
            }

            .player-card .stat-row {
                grid-template-columns: repeat(3, 1fr);
                gap: 5px;
            }

            .player-card .stat-value {
                font-size: 1rem;
            }

            .cta-band {
                padding: 28px 18px;
            }

            .cta-band h3 {
                font-size: 1.3rem;
            }

            .filter-bar {
                gap: 6px;
            }

            .filter-tag {
                padding: 6px 12px;
                font-size: 0.8rem;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 575.98px) {
            .container-fluid.nav-container {
                padding-left: 12px;
                padding-right: 12px;
            }

            h1 {
                font-size: 1.5rem;
            }

            .category-header h1 {
                font-size: 1.35rem;
            }

            .player-card .player-img {
                height: 130px;
            }

            .player-card .player-body {
                padding: 14px 14px 16px;
            }

            .player-card .player-name {
                font-size: 1.05rem;
            }

            .btn-primary-cta,
            .btn-secondary-cta {
                padding: 10px 18px;
                font-size: 0.85rem;
                width: 100%;
                justify-content: center;
            }

            .section-padding {
                padding-top: 36px;
                padding-bottom: 36px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-base: #0A0E14;
            --bg-surface: #11161E;
            --bg-elevated: #161B22;
            --border: #21262D;
            --primary: #00E5A0;
            --primary-glow: rgba(0,229,160,0.45);
            --secondary: #8B5CF6;
            --accent: #FFB800;
            --text-primary: #F0F6FC;
            --text-secondary: #8B949E;
            --text-muted: #6E7681;
            --success: #00E5A0;
            --warning: #FFB800;
            --danger: #FF4D4D;
            --sidebar-width: 250px;
            --radius-card: 14px;
            --radius-btn: 9px;
            --font-title: 'Rajdhani', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Rajdhani', 'Orbitron', 'PingFang SC', sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html, body {
            margin: 0;
            padding: 0;
            background-color: var(--bg-base);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            font-size: 16px;
            scroll-behavior: smooth;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover, a:focus {
            color: var(--text-primary);
            outline: none;
        }

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

        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container-fluid.nav-container {
            max-width: 1440px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding-top: 72px;
            padding-bottom: 72px;
        }

        /* ---------- App Shell Layout ---------- */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: var(--bg-surface);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 1040;
            transition: transform .25s ease;
            overflow-y: auto;
        }

        .sidebar-header {
            padding: 24px 20px 16px;
            border-bottom: 1px solid var(--border);
        }

        .sidebar .logo {
            font-family: var(--font-title);
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--primary);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .sidebar .logo:hover,
        .sidebar .logo:focus {
            color: var(--primary);
        }
        .sidebar .logo i {
            color: var(--secondary);
            font-size: 1.8rem;
        }

        .sidebar-nav {
            flex: 1;
            padding: 20px 12px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.98rem;
            position: relative;
            transition: all .2s ease;
            border-left: 3px solid transparent;
            text-decoration: none;
        }
        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 1.1rem;
        }
        .sidebar-nav .nav-link:hover {
            background: var(--bg-elevated);
            color: var(--text-primary);
            border-left-color: var(--primary);
            box-shadow: 0 0 12px var(--primary-glow);
        }
        .sidebar-nav .nav-link.active {
            background: rgba(0,229,160,0.08);
            color: var(--primary);
            border-left-color: var(--primary);
            box-shadow: 0 0 14px var(--primary-glow);
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.8rem;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .sidebar-footer a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color .2s ease;
        }
        .sidebar-footer a:hover {
            color: var(--primary);
        }

        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            background: var(--bg-base);
        }

        /* ---------- Mobile Topbar ---------- */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: #0d1219;
            border-bottom: 1px solid var(--border);
            z-index: 1050;
            align-items: center;
            padding: 0 16px;
            justify-content: space-between;
        }
        .mobile-topbar .logo {
            font-family: var(--font-title);
            font-size: 1.3rem;
            font-weight: 900;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-topbar .logo i {
            color: var(--secondary);
        }
        .mobile-topbar .menu-toggle {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-primary);
            border-radius: 6px;
            width: 40px;
            height: 40px;
            font-size: 1.4rem;
            transition: all .2s;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .mobile-topbar .menu-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        .drawer-backdrop {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            z-index: 1045;
        }
        .drawer-backdrop.show {
            display: block;
        }

        /* ---------- Buttons ---------- */
        .btn-primary-cta {
            background: var(--primary);
            border: none;
            color: #0A0E14;
            font-weight: 700;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            letter-spacing: 0.5px;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-cta:hover,
        .btn-primary-cta:focus {
            background: #00f0ac;
            box-shadow: 0 0 18px var(--primary-glow);
            color: #0A0E14;
        }

        .btn-secondary-cta {
            background: transparent;
            border: 1px solid var(--text-secondary);
            color: var(--text-primary);
            font-weight: 600;
            padding: 12px 22px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary-cta:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        /* ---------- Breadcrumb ---------- */
        .breadcrumb-dark {
            --bs-breadcrumb-divider-color: var(--text-muted);
            background: transparent;
            margin-bottom: 0;
            padding: 0;
            font-size: 0.9rem;
        }
        .breadcrumb-dark .breadcrumb-item a {
            color: var(--text-secondary);
        }
        .breadcrumb-dark .breadcrumb-item a:hover {
            color: var(--primary);
        }
        .breadcrumb-dark .breadcrumb-item.active {
            color: var(--primary);
        }

        /* ---------- Category Header ---------- */
        .category-header {
            padding: 48px 0 32px;
            border-bottom: 1px solid var(--border);
            background: var(--bg-surface);
        }
        .category-header h1 {
            font-family: var(--font-title);
            font-weight: 900;
            font-size: 2.8rem;
            letter-spacing: 1px;
            color: var(--text-primary);
            margin-bottom: 12px;
            text-shadow: 0 0 18px rgba(0,229,160,0.25);
        }
        .category-header .cat-desc {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 720px;
            margin-bottom: 0;
        }

        /* ---------- Filter Tags ---------- */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .filter-tag {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: all .2s ease;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-tag.active {
            background: rgba(0,229,160,0.08);
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        /* ---------- Cards ---------- */
        .equipment-card {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all .25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .equipment-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
            box-shadow: 0 12px 28px rgba(0,0,0,0.4), 0 0 18px var(--primary-glow);
            background: var(--bg-elevated);
        }
        .equipment-card .img-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #0d1219;
        }
        .equipment-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }
        .equipment-card:hover .img-wrap img {
            transform: scale(1.05);
        }
        .equipment-card .badge-top {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0,0,0,0.65);
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .equipment-card .card-body {
            padding: 18px 18px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .equipment-card .equip-brand {
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }
        .equipment-card .equip-name {
            font-family: var(--font-title);
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.2;
        }
        .equipment-card .equip-desc {
            color: var(--text-secondary);
            font-size: 0.92rem;
            flex: 1;
            margin-bottom: 14px;
        }
        .equipment-card .equip-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .equipment-card .price {
            color: var(--text-primary);
            font-weight: 700;
            font-family: var(--font-num);
            font-size: 1.1rem;
        }
        .equipment-card .rating {
            color: var(--accent);
            font-size: 0.9rem;
            font-weight: 600;
        }
        .equipment-card .rating i {
            margin-right: 3px;
        }

        /* ---------- Featured block ---------- */
        .featured-panel {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: all .25s ease;
            height: 100%;
        }
        .featured-panel:hover {
            border-color: var(--secondary);
            box-shadow: 0 0 18px rgba(139,92,246,0.25);
            transform: translateY(-3px);
        }
        .featured-panel h3 {
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 1.3rem;
            margin-bottom: 10px;
        }
        .featured-panel p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 14px;
        }
        .featured-panel .thumb {
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 16px;
            aspect-ratio: 16 / 9;
            background: #0d1219;
        }
        .featured-panel .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ---------- Ranking list ---------- */
        .rank-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 12px 18px;
            transition: all .2s ease;
        }
        .rank-item:hover {
            border-color: var(--primary);
            background: var(--bg-elevated);
        }
        .rank-number {
            font-family: var(--font-num);
            font-size: 2rem;
            font-weight: 900;
            color: var(--primary);
            min-width: 48px;
            text-align: center;
            text-shadow: 0 0 12px var(--primary-glow);
        }
        .rank-info {
            flex: 1;
        }
        .rank-info .rank-title {
            font-weight: 700;
            color: var(--text-primary);
            font-size: 1rem;
        }
        .rank-info .rank-sub {
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .rank-value {
            font-family: var(--font-num);
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent);
        }

        /* ---------- Resource cards ---------- */
        .resource-card {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 20px;
            transition: all .25s ease;
            height: 100%;
            text-align: left;
        }
        .resource-card:hover {
            border-color: var(--primary);
            box-shadow: 0 0 14px var(--primary-glow);
            transform: translateY(-3px);
        }
        .resource-card .res-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .resource-card h4 {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .resource-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ---------- CTA Panel ---------- */
        .cta-panel {
            background: linear-gradient(135deg, rgba(0,229,160,0.06) 0%, rgba(139,92,246,0.08) 100%);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 36px 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .cta-panel h2 {
            font-family: var(--font-title);
            font-weight: 900;
            font-size: 1.8rem;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .cta-panel p {
            color: var(--text-secondary);
            margin-bottom: 0;
            max-width: 600px;
        }

        /* ---------- FAQ ---------- */
        .accordion-dark .accordion-item {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 10px;
            overflow: hidden;
        }
        .accordion-dark .accordion-header {
            margin: 0;
        }
        .accordion-dark .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 700;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .accordion-dark .accordion-button:not(.collapsed) {
            background: rgba(0,229,160,0.06);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-dark .accordion-button::after {
            filter: invert(70%) sepia(80%) saturate(300%) hue-rotate(100deg);
        }
        .accordion-dark .accordion-body {
            background: var(--bg-base);
            color: var(--text-secondary);
            padding: 16px 20px;
            font-size: 0.95rem;
        }
        .accordion-dark .accordion-button:focus {
            box-shadow: 0 0 0 2px var(--primary-glow);
        }

        /* ---------- Footer ---------- */
        .footer-area {
            background: var(--bg-surface);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-area .footer-logo {
            font-family: var(--font-title);
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-area .footer-logo i {
            color: var(--secondary);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            text-decoration: none;
            transition: color .2s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 32px;
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1199.98px) {
            :root {
                --sidebar-width: 220px;
            }
            .category-header h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 991.98px) {
            .sidebar {
                transform: translateX(-100%);
                width: 260px;
            }
            .sidebar.mobile-open {
                transform: translateX(0);
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }
            .category-header {
                padding-top: 32px;
            }
            .section-padding {
                padding-top: 56px;
                padding-bottom: 56px;
            }
        }

        @media (max-width: 767.98px) {
            .category-header h1 {
                font-size: 2rem;
            }
            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-panel .btn {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .equipment-card .equip-name {
                font-size: 1.1rem;
            }
            .rank-item {
                flex-wrap: wrap;
                gap: 10px;
            }
            .rank-number {
                font-size: 1.6rem;
                min-width: 36px;
            }
            .rank-value {
                font-size: 1.2rem;
            }
            .container-fluid.nav-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 575.98px) {
            .section-padding {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .category-header {
                padding-top: 24px;
                padding-bottom: 24px;
            }
            .category-header h1 {
                font-size: 1.7rem;
            }
            .filter-tag {
                padding: 6px 12px;
                font-size: 0.82rem;
            }
            .btn-primary-cta,
            .btn-secondary-cta {
                padding: 10px 16px;
                font-size: 0.9rem;
            }
        }

/* 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}