/* roulang page: index */
:root {
      --app-bg: #060b18;
      --app-bg-alt: #0a1329;
      --app-card-bg: rgba(15, 23, 42, 0.72);
      --app-card-border: rgba(56, 189, 248, 0.22);
      --app-text-main: #f8fafc;
      --app-text-muted: #94a3b8;
      --app-text-dim: #64748b;
      --app-primary: #0ea5e9;
      --app-primary-glow: #38bdf8;
      --app-accent: #06b6d4;
      --app-purple: #6366f1;
      --app-radius: 16px;
      --app-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      padding: 0;
      background-color: var(--app-bg);
      color: var(--app-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.68;
      overflow-x: hidden;
      position: relative;
    }
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background: radial-gradient(circle at 20% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 80% 80%, rgba(99, 102, 241, 0.07) 0%, transparent 40%);
      pointer-events: none;
      z-index: 0;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--app-transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .relative-z {
      position: relative;
      z-index: 1;
    }
    /* 顶部导航 */
    .site-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(6, 11, 24, 0.88);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(56, 189, 248, 0.16);
      padding: 0.85rem 0;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: #ffffff;
      letter-spacing: 0.5px;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--app-primary), var(--app-accent));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: #fff;
      box-shadow: 0 0 16px rgba(14, 165, 233, 0.45);
    }
    .nav-links-wrap {
      display: flex;
      align-items: center;
      gap: 1.6rem;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .nav-links-wrap a {
      color: var(--app-text-muted);
      font-size: 0.96rem;
      font-weight: 500;
      position: relative;
      padding: 0.35rem 0;
    }
    .nav-links-wrap a:hover,
    .nav-links-wrap a.active {
      color: var(--app-primary-glow);
    }
    .nav-links-wrap a.active::after,
    .nav-links-wrap a:hover::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, var(--app-primary), var(--app-accent));
      box-shadow: 0 0 8px var(--app-primary-glow);
    }
    /* 按钮样式体系 */
    .glow-btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0.65rem 1.45rem;
      font-size: 0.95rem;
      font-weight: 600;
      color: #ffffff;
      background: linear-gradient(135deg, var(--app-primary), var(--app-accent));
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 999px;
      box-shadow: 0 0 16px rgba(14, 165, 233, 0.38);
      transition: var(--app-transition);
      cursor: pointer;
    }
    .glow-btn-primary:hover {
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 0 26px rgba(14, 165, 233, 0.65);
    }
    .glow-btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0.65rem 1.35rem;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--app-text-main);
      background: rgba(30, 41, 59, 0.65);
      border: 1px solid rgba(56, 189, 248, 0.3);
      border-radius: 999px;
      transition: var(--app-transition);
      cursor: pointer;
    }
    .glow-btn-secondary:hover {
      color: #ffffff;
      background: rgba(56, 189, 248, 0.18);
      border-color: var(--app-primary-glow);
      transform: translateY(-2px);
    }
    /* 玻璃拟态基础卡片 */
    .glass-card {
      background: var(--app-card-bg);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--app-card-border);
      border-radius: var(--app-radius);
      padding: 1.8rem;
      box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      transition: var(--app-transition);
      height: 100%;
      position: relative;
      overflow: hidden;
    }
    .glass-card:hover {
      border-color: var(--app-primary-glow);
      transform: translateY(-4px);
      box-shadow: 0 14px 36px -8px rgba(14, 165, 233, 0.25);
    }
    .glass-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.04), transparent);
      transition: 0.6s ease;
      pointer-events: none;
    }
    .glass-card:hover::before {
      left: 100%;
    }
    /* 区域统一留白 */
    .site-section {
      padding: 5rem 0;
      position: relative;
    }
    .site-section-alt {
      background-color: var(--app-bg-alt);
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-header {
      margin-bottom: 3rem;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.82rem;
      color: var(--app-primary-glow);
      background: rgba(14, 165, 233, 0.12);
      border: 1px solid rgba(56, 189, 248, 0.3);
      padding: 0.28rem 0.85rem;
      border-radius: 999px;
      margin-bottom: 0.8rem;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--app-text-main);
      margin-bottom: 0.85rem;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--app-text-muted);
      max-width: 780px;
      margin-bottom: 0;
    }
    /* 首屏 Hero 样式 */
    .hero-wrap {
      padding: 5.5rem 0 4.5rem;
      background: linear-gradient(180deg, rgba(6, 11, 24, 0.92) 0%, rgba(10, 19, 41, 0.96) 100%),
                  url('/assets/images/d7b4d7e6dfbb4b48.webp') center center/cover no-repeat;
      border-bottom: 1px solid rgba(56, 189, 248, 0.15);
      position: relative;
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.28;
      margin-bottom: 1.25rem;
      background: linear-gradient(135deg, #ffffff 30%, var(--app-primary-glow) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-p {
      font-size: 1.1rem;
      color: #cbd5e1;
      line-height: 1.8;
      margin-bottom: 2rem;
    }
    .hero-stage {
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid var(--app-card-border);
      border-radius: 18px;
      padding: 1.2rem;
      box-shadow: 0 20px 45px -12px rgba(0, 0, 0, 0.75);
    }
    .hero-stage-topbar {
      display: flex;
      align-items: center;
      gap: 8px;
      padding-bottom: 0.9rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 1rem;
    }
    .dot-ctrl {
      width: 11px;
      height: 11px;
      border-radius: 50%;
      display: inline-block;
    }
    .dot-red { background: #ef4444; }
    .dot-yellow { background: #f59e0b; }
    .dot-green { background: #10b981; }
    .hero-address-box {
      flex: 1;
      background: rgba(30, 41, 59, 0.7);
      border-radius: 6px;
      padding: 0.28rem 0.9rem;
      font-size: 0.82rem;
      color: var(--app-text-muted);
      border: 1px solid rgba(255, 255, 255, 0.06);
    }
    .hero-stage img {
      border-radius: 10px;
      width: 100%;
      height: 280px;
      object-fit: cover;
    }
    /* 指标统计栏 */
    .metric-item {
      padding: 1.4rem;
      background: rgba(15, 23, 42, 0.55);
      border: 1px solid rgba(56, 189, 248, 0.15);
      border-radius: 14px;
      text-align: center;
    }
    .metric-value {
      font-size: 2.3rem;
      font-weight: 800;
      color: var(--app-primary-glow);
      line-height: 1;
      margin-bottom: 0.35rem;
    }
    .metric-label {
      font-size: 0.88rem;
      color: var(--app-text-muted);
      margin: 0;
    }
    /* 交互图文列表 */
    .flow-bullet {
      display: flex;
      gap: 1rem;
      margin-bottom: 1.3rem;
    }
    .bullet-num {
      flex-shrink: 0;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: rgba(14, 165, 233, 0.16);
      border: 1px solid var(--app-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--app-primary-glow);
      font-weight: 700;
      font-size: 0.9rem;
    }
    /* 对比方案卡片 */
    .pricing-card {
      border-radius: 18px;
      background: rgba(15, 23, 42, 0.65);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 2.2rem 1.8rem;
      position: relative;
      transition: var(--app-transition);
    }
    .pricing-card.featured {
      background: rgba(15, 23, 42, 0.88);
      border: 2px solid var(--app-primary-glow);
      box-shadow: 0 0 30px rgba(14, 165, 233, 0.3);
      transform: translateY(-6px);
    }
    .price-tag {
      font-size: 2.1rem;
      font-weight: 700;
      color: #ffffff;
      margin: 1.2rem 0;
    }
    .price-feature-list {
      list-style: none;
      padding: 0;
      margin: 1.5rem 0 2rem;
    }
    .price-feature-list li {
      padding: 0.45rem 0;
      font-size: 0.92rem;
      color: var(--app-text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .price-feature-list li i {
      color: var(--app-primary-glow);
    }
    /* FAQ 手风琴深色重塑 */
    .accordion-item {
      background-color: rgba(15, 23, 42, 0.65);
      border: 1px solid rgba(56, 189, 248, 0.16);
      border-radius: 12px !important;
      margin-bottom: 0.85rem;
      overflow: hidden;
    }
    .accordion-button {
      background-color: transparent;
      color: var(--app-text-main);
      font-weight: 600;
      font-size: 1.02rem;
      padding: 1.2rem 1.4rem;
      box-shadow: none !important;
    }
    .accordion-button:not(.collapsed) {
      background-color: rgba(14, 165, 233, 0.1);
      color: var(--app-primary-glow);
    }
    .accordion-button::after {
      filter: invert(1);
    }
    .accordion-body {
      color: var(--app-text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
      padding: 1.2rem 1.4rem 1.4rem;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }
    /* CMS 资讯卡片 */
    .cms-feed-card {
      background: rgba(15, 23, 42, 0.65);
      border: 1px solid var(--app-card-border);
      border-radius: 14px;
      padding: 1.4rem;
      transition: var(--app-transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .cms-feed-card:hover {
      border-color: var(--app-primary-glow);
      transform: translateY(-3px);
    }
    .cms-badge {
      font-size: 0.78rem;
      color: var(--app-accent);
      background: rgba(6, 182, 212, 0.12);
      border: 1px solid rgba(6, 182, 212, 0.3);
      padding: 0.15rem 0.6rem;
      border-radius: 6px;
      width: fit-content;
      margin-bottom: 0.65rem;
    }
    .cms-title {
      font-size: 1.12rem;
      font-weight: 600;
      color: var(--app-text-main);
      margin-bottom: 0.6rem;
      line-height: 1.45;
    }
    .cms-excerpt {
      font-size: 0.88rem;
      color: var(--app-text-muted);
      line-height: 1.6;
      margin-bottom: 1rem;
      flex-grow: 1;
    }
    .cms-meta {
      font-size: 0.8rem;
      color: var(--app-text-dim);
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 0.75rem;
    }
    /* 通用页脚 */
    .site-footer {
      background-color: #030712;
      border-top: 1px solid rgba(56, 189, 248, 0.15);
      padding: 4.5rem 0 2rem;
      position: relative;
    }
    .footer-col-title {
      font-size: 1rem;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 1.25rem;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links a {
      color: var(--app-text-muted);
      font-size: 0.9rem;
    }
    .footer-links a:hover {
      color: var(--app-primary-glow);
      padding-left: 3px;
    }
    .footer-bottom {
      margin-top: 3.5rem;
      padding-top: 1.8rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.85rem;
      color: var(--app-text-dim);
    }
    /* 响应式调整 */
    @media (max-width: 991px) {
      .hero-h1 {
        font-size: 2.2rem;
      }
      .section-title {
        font-size: 1.8rem;
      }
      .pricing-card.featured {
        transform: none;
      }
    }
    @media (max-width: 576px) {
      .hero-h1 {
        font-size: 1.85rem;
      }
      .site-section {
        padding: 3.5rem 0;
      }
    }

/* roulang page: category1 */
:root {
      --app-bg: #060b18;
      --app-bg-alt: #0a1329;
      --app-card-bg: rgba(15, 23, 42, 0.72);
      --app-card-border: rgba(56, 189, 248, 0.22);
      --app-text-main: #f8fafc;
      --app-text-muted: #94a3b8;
      --app-text-dim: #64748b;
      --app-primary: #0ea5e9;
      --app-primary-glow: #38bdf8;
      --app-accent: #06b6d4;
      --app-purple: #6366f1;
      --app-radius: 16px;
      --app-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    body {
      margin: 0;
      padding: 0;
      background-color: var(--app-bg);
      color: var(--app-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.68;
      overflow-x: hidden;
      position: relative;
    }
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background: radial-gradient(circle at 20% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 80% 80%, rgba(99, 102, 241, 0.07) 0%, transparent 40%);
      pointer-events: none;
      z-index: 0;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--app-transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .site-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(6, 11, 24, 0.88);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(56, 189, 248, 0.16);
      padding: 0.85rem 0;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: #ffffff;
      letter-spacing: 0.5px;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--app-primary), var(--app-accent));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: #fff;
      box-shadow: 0 0 16px rgba(14, 165, 233, 0.45);
    }
    .nav-links-wrap {
      display: flex;
      align-items: center;
      gap: 1.6rem;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .nav-links-wrap a {
      color: var(--app-text-muted);
      font-size: 0.96rem;
      font-weight: 500;
      position: relative;
      padding: 0.35rem 0;
    }
    .nav-links-wrap a:hover,
    .nav-links-wrap a.active {
      color: var(--app-primary-glow);
    }
    .nav-links-wrap a.active::after,
    .nav-links-wrap a:hover::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, var(--app-primary), var(--app-accent));
      box-shadow: 0 0 8px var(--app-primary-glow);
    }
    .glow-btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0.65rem 1.45rem;
      font-size: 0.95rem;
      font-weight: 600;
      color: #ffffff;
      background: linear-gradient(135deg, var(--app-primary), var(--app-accent));
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 999px;
      box-shadow: 0 0 16px rgba(14, 165, 233, 0.38);
      transition: var(--app-transition);
      cursor: pointer;
    }
    .glow-btn-primary:hover {
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 0 26px rgba(14, 165, 233, 0.65);
    }
    .glow-btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0.65rem 1.35rem;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--app-text-main);
      background: rgba(30, 41, 59, 0.65);
      border: 1px solid rgba(56, 189, 248, 0.3);
      border-radius: 999px;
      transition: var(--app-transition);
      cursor: pointer;
    }
    .glow-btn-secondary:hover {
      color: #ffffff;
      background: rgba(56, 189, 248, 0.18);
      border-color: var(--app-primary-glow);
      transform: translateY(-2px);
    }
    .glass-card {
      background: var(--app-card-bg);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--app-card-border);
      border-radius: var(--app-radius);
      padding: 1.8rem;
      box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      transition: var(--app-transition);
      height: 100%;
      position: relative;
      overflow: hidden;
    }
    .glass-card:hover {
      border-color: var(--app-primary-glow);
      transform: translateY(-4px);
      box-shadow: 0 14px 36px -8px rgba(14, 165, 233, 0.25);
    }
    .site-section {
      padding: 4.5rem 0;
      position: relative;
    }
    .site-section-alt {
      background-color: var(--app-bg-alt);
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-header {
      margin-bottom: 2.8rem;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.82rem;
      color: var(--app-primary-glow);
      background: rgba(14, 165, 233, 0.12);
      border: 1px solid rgba(56, 189, 248, 0.3);
      padding: 0.28rem 0.85rem;
      border-radius: 999px;
      margin-bottom: 0.8rem;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--app-text-main);
      margin-bottom: 0.85rem;
    }
    .section-desc {
      font-size: 1.02rem;
      color: var(--app-text-muted);
      max-width: 780px;
      margin-bottom: 0;
    }
    .category-header-bar {
      padding: 3rem 0 2.5rem;
      background: linear-gradient(180deg, rgba(14, 165, 233, 0.08) 0%, transparent 100%);
      border-bottom: 1px solid rgba(56, 189, 248, 0.15);
    }
    .breadcrumb-custom {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.9rem;
      color: var(--app-text-dim);
      margin-bottom: 1rem;
    }
    .breadcrumb-custom a {
      color: var(--app-text-muted);
    }
    .breadcrumb-custom a:hover {
      color: var(--app-primary-glow);
    }
    .category-h1 {
      font-size: 2.4rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 0.75rem;
      letter-spacing: -0.5px;
    }
    .filter-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 0.65rem;
      padding-bottom: 0.5rem;
    }
    .filter-pill {
      padding: 0.45rem 1.1rem;
      font-size: 0.9rem;
      border-radius: 999px;
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(56, 189, 248, 0.2);
      color: var(--app-text-muted);
      transition: var(--app-transition);
    }
    .filter-pill:hover,
    .filter-pill.active {
      background: rgba(14, 165, 233, 0.2);
      border-color: var(--app-primary-glow);
      color: #ffffff;
      box-shadow: 0 0 12px rgba(14, 165, 233, 0.35);
    }
    .post-card {
      display: flex;
      flex-direction: column;
      height: 100%;
      background: var(--app-card-bg);
      border: 1px solid var(--app-card-border);
      border-radius: var(--app-radius);
      padding: 1.4rem;
      transition: var(--app-transition);
    }
    .post-card:hover {
      border-color: var(--app-primary-glow);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -8px rgba(14, 165, 233, 0.3);
    }
    .post-card-tag {
      font-size: 0.78rem;
      color: var(--app-accent);
      background: rgba(6, 182, 212, 0.12);
      border: 1px solid rgba(6, 182, 212, 0.25);
      padding: 0.2rem 0.65rem;
      border-radius: 6px;
      display: inline-block;
      margin-bottom: 0.85rem;
      align-self: flex-start;
    }
    .post-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--app-text-main);
      margin-bottom: 0.75rem;
      line-height: 1.45;
    }
    .post-card-summary {
      font-size: 0.92rem;
      color: var(--app-text-muted);
      line-height: 1.6;
      margin-bottom: 1.2rem;
      flex-grow: 1;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .post-card-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.82rem;
      color: var(--app-text-dim);
      padding-top: 0.85rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .rank-num {
      width: 28px;
      height: 28px;
      border-radius: 8px;
      background: rgba(14, 165, 233, 0.15);
      border: 1px solid rgba(56, 189, 248, 0.3);
      color: var(--app-primary-glow);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
      flex-shrink: 0;
    }
    .rank-num.top-1 {
      background: linear-gradient(135deg, #f59e0b, #ef4444);
      color: #fff;
      border: none;
    }
    .rank-num.top-2 {
      background: linear-gradient(135deg, #0ea5e9, #06b6d4);
      color: #fff;
      border: none;
    }
    .tag-bubble {
      display: inline-block;
      padding: 0.35rem 0.85rem;
      font-size: 0.85rem;
      background: rgba(30, 41, 59, 0.75);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 8px;
      color: var(--app-text-muted);
      margin: 0.3rem 0.3rem 0.3rem 0;
      transition: var(--app-transition);
    }
    .tag-bubble:hover {
      border-color: var(--app-primary-glow);
      color: #ffffff;
      transform: translateY(-1px);
    }
    .compat-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      background: rgba(15, 23, 42, 0.5);
      border-radius: var(--app-radius);
      overflow: hidden;
      border: 1px solid var(--app-card-border);
    }
    .compat-table th {
      background: rgba(30, 41, 59, 0.8);
      padding: 1rem 1.2rem;
      color: var(--app-text-main);
      font-weight: 600;
      font-size: 0.92rem;
      border-bottom: 1px solid rgba(56, 189, 248, 0.2);
    }
    .compat-table td {
      padding: 1rem 1.2rem;
      font-size: 0.9rem;
      color: var(--app-text-muted);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .compat-table tr:last-child td {
      border-bottom: none;
    }
    .site-footer {
      background-color: #030712;
      border-top: 1px solid rgba(56, 189, 248, 0.16);
      padding: 4.5rem 0 2rem;
    }
    .site-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.3rem;
      font-weight: 700;
      color: #fff;
    }
    .logo-icon {
      font-size: 1.4rem;
      color: var(--app-primary-glow);
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 1.2rem;
      letter-spacing: 0.5px;
    }
    .footer-nav {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-nav li {
      margin-bottom: 0.65rem;
    }
    .footer-nav a {
      color: var(--app-text-muted);
      font-size: 0.88rem;
    }
    .footer-nav a:hover {
      color: var(--app-primary-glow);
    }
    .footer-bottom-line {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 2rem;
      margin-top: 3.5rem;
    }
    @media (max-width: 991.98px) {
      .category-h1 { font-size: 1.85rem; }
      .section-title { font-size: 1.6rem; }
      .site-section { padding: 3.2rem 0; }
    }

/* roulang page: article */
:root {
      --app-bg: #060b18;
      --app-bg-alt: #0a1329;
      --app-card-bg: rgba(15, 23, 42, 0.72);
      --app-card-border: rgba(56, 189, 248, 0.22);
      --app-text-main: #f8fafc;
      --app-text-muted: #94a3b8;
      --app-text-dim: #64748b;
      --app-primary: #0ea5e9;
      --app-primary-glow: #38bdf8;
      --app-accent: #06b6d4;
      --app-purple: #6366f1;
      --app-radius: 16px;
      --app-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    body {
      margin: 0;
      padding: 0;
      background-color: var(--app-bg);
      color: var(--app-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.72;
      overflow-x: hidden;
      position: relative;
    }
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background: radial-gradient(circle at 18% 18%, rgba(14, 165, 233, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 82% 78%, rgba(99, 102, 241, 0.07) 0%, transparent 40%);
      pointer-events: none;
      z-index: 0;
    }
    .relative-z {
      position: relative;
      z-index: 1;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--app-transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .site-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(6, 11, 24, 0.88);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(56, 189, 248, 0.16);
      padding: 0.85rem 0;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: #ffffff;
      letter-spacing: 0.5px;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--app-primary), var(--app-accent));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: #fff;
      box-shadow: 0 0 16px rgba(14, 165, 233, 0.45);
    }
    .nav-links-wrap {
      display: flex;
      align-items: center;
      gap: 1.6rem;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .nav-links-wrap a {
      color: var(--app-text-muted);
      font-size: 0.96rem;
      font-weight: 500;
      position: relative;
      padding: 0.35rem 0;
    }
    .nav-links-wrap a:hover,
    .nav-links-wrap a.active {
      color: var(--app-primary-glow);
    }
    .nav-links-wrap a.active::after,
    .nav-links-wrap a:hover::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, var(--app-primary), var(--app-accent));
      box-shadow: 0 0 8px var(--app-primary-glow);
    }
    .glow-btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0.65rem 1.45rem;
      font-size: 0.95rem;
      font-weight: 600;
      color: #ffffff;
      background: linear-gradient(135deg, var(--app-primary), var(--app-accent));
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 999px;
      box-shadow: 0 0 16px rgba(14, 165, 233, 0.38);
      transition: var(--app-transition);
      cursor: pointer;
    }
    .glow-btn-primary:hover {
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 0 26px rgba(14, 165, 233, 0.65);
    }
    .glow-btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0.65rem 1.35rem;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--app-text-main);
      background: rgba(30, 41, 59, 0.65);
      border: 1px solid rgba(56, 189, 248, 0.3);
      border-radius: 999px;
      transition: var(--app-transition);
      cursor: pointer;
    }
    .glow-btn-secondary:hover {
      color: #ffffff;
      background: rgba(56, 189, 248, 0.18);
      border-color: var(--app-primary-glow);
      transform: translateY(-2px);
    }
    .glass-card {
      background: var(--app-card-bg);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--app-card-border);
      border-radius: var(--app-radius);
      padding: 1.8rem;
      box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      transition: var(--app-transition);
      position: relative;
      overflow: hidden;
    }
    .glass-card:hover {
      border-color: var(--app-primary-glow);
      box-shadow: 0 14px 36px -8px rgba(14, 165, 233, 0.22);
    }
    .article-header-section {
      padding: 3.5rem 0 2rem;
      background: linear-gradient(180deg, rgba(10, 19, 41, 0.85) 0%, rgba(6, 11, 24, 0.95) 100%),
                  url('/assets/images/3ee9e5418aa0e9ff.webp') center center/cover no-repeat;
      border-bottom: 1px solid rgba(56, 189, 248, 0.15);
    }
    .badge-category {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 0.32rem 0.9rem;
      background: rgba(14, 165, 233, 0.15);
      border: 1px solid rgba(56, 189, 248, 0.35);
      border-radius: 999px;
      color: var(--app-primary-glow);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 1.2rem;
    }
    .article-main-title {
      font-size: 2.3rem;
      font-weight: 700;
      color: #ffffff;
      line-height: 1.35;
      margin-bottom: 1.25rem;
    }
    .article-meta-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 1.4rem;
      color: var(--app-text-muted);
      font-size: 0.92rem;
    }
    .article-meta-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .article-meta-item i {
      color: var(--app-primary-glow);
    }
    .breadcrumb-bar {
      background: rgba(15, 23, 42, 0.55);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 0.85rem 0;
      font-size: 0.88rem;
    }
    .breadcrumb-bar a {
      color: var(--app-text-muted);
    }
    .breadcrumb-bar a:hover {
      color: var(--app-primary-glow);
    }
    .breadcrumb-bar .separator {
      margin: 0 0.5rem;
      color: var(--app-text-dim);
    }
    .breadcrumb-bar .current-crumb {
      color: var(--app-text-main);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 320px;
      display: inline-block;
      vertical-align: bottom;
    }
    .article-reading-body {
      padding: 3rem 0;
    }
    .rich-article-box {
      background: rgba(15, 23, 42, 0.7);
      border: 1px solid rgba(56, 189, 248, 0.18);
      border-radius: var(--app-radius);
      padding: 2.5rem;
      box-shadow: 0 12px 36px -8px rgba(0, 0, 0, 0.6);
    }
    .rich-article-box h2 {
      font-size: 1.55rem;
      font-weight: 700;
      color: #ffffff;
      margin-top: 2rem;
      margin-bottom: 1rem;
      position: relative;
      padding-left: 14px;
    }
    .rich-article-box h2::before {
      content: "";
      position: absolute;
      left: 0;
      top: 4px;
      bottom: 4px;
      width: 4px;
      background: linear-gradient(180deg, var(--app-primary-glow), var(--app-accent));
      border-radius: 2px;
      box-shadow: 0 0 8px var(--app-primary-glow);
    }
    .rich-article-box h3 {
      font-size: 1.25rem;
      font-weight: 600;
      color: var(--app-primary-glow);
      margin-top: 1.5rem;
      margin-bottom: 0.75rem;
    }
    .rich-article-box p {
      color: #cbd5e1;
      font-size: 1.05rem;
      line-height: 1.85;
      margin-bottom: 1.4rem;
    }
    .rich-article-box ul,
    .rich-article-box ol {
      color: #cbd5e1;
      padding-left: 1.6rem;
      margin-bottom: 1.4rem;
    }
    .rich-article-box li {
      margin-bottom: 0.6rem;
      line-height: 1.7;
    }
    .rich-article-box blockquote {
      margin: 1.8rem 0;
      padding: 1.2rem 1.6rem;
      background: rgba(14, 165, 233, 0.08);
      border-left: 4px solid var(--app-primary-glow);
      border-radius: 0 10px 10px 0;
      color: #e2e8f0;
      font-style: italic;
    }
    .rich-article-box code {
      background: rgba(30, 41, 59, 0.85);
      color: var(--app-primary-glow);
      padding: 0.2rem 0.45rem;
      border-radius: 6px;
      font-family: Consolas, Monaco, monospace;
      font-size: 0.92em;
    }
    .rich-article-box pre {
      background: #030712;
      border: 1px solid rgba(56, 189, 248, 0.2);
      border-radius: 12px;
      padding: 1.25rem;
      overflow-x: auto;
      margin: 1.5rem 0;
    }
    .rich-article-box pre code {
      background: transparent;
      padding: 0;
      color: #7dd3fc;
    }
    .rich-article-box img {
      border-radius: 12px;
      border: 1px solid rgba(255, 255, 255, 0.08);
      margin: 2rem auto;
      box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.7);
    }
    .env-spec-box {
      background: rgba(14, 165, 233, 0.06);
      border: 1px dashed rgba(56, 189, 248, 0.35);
      border-radius: 12px;
      padding: 1.25rem 1.5rem;
      margin-top: 2rem;
    }
    .share-utility-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding: 1.25rem 1.5rem;
      margin-top: 1.8rem;
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.07);
      border-radius: 12px;
    }
    .post-nav-card {
      background: var(--app-card-bg);
      border: 1px solid var(--app-card-border);
      border-radius: 12px;
      padding: 1.25rem 1.5rem;
      transition: var(--app-transition);
      display: block;
      height: 100%;
    }
    .post-nav-card:hover {
      border-color: var(--app-primary-glow);
      transform: translateY(-2px);
    }
    .post-nav-label {
      font-size: 0.8rem;
      color: var(--app-text-dim);
      text-transform: uppercase;
      margin-bottom: 0.35rem;
    }
    .post-nav-title {
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--app-text-main);
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .sidebar-widget {
      background: var(--app-card-bg);
      border: 1px solid var(--app-card-border);
      border-radius: var(--app-radius);
      padding: 1.5rem;
      margin-bottom: 1.8rem;
    }
    .widget-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 1.2rem;
      display: flex;
      align-items: center;
      gap: 8px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.07);
      padding-bottom: 0.75rem;
    }
    .widget-title i {
      color: var(--app-primary-glow);
    }
    .sidebar-article-item {
      padding: 0.75rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      display: flex;
      flex-direction: column;
      gap: 0.3rem;
    }
    .sidebar-article-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .sidebar-article-link {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--app-text-main);
      line-height: 1.5;
    }
    .sidebar-article-link:hover {
      color: var(--app-primary-glow);
    }
    .sidebar-article-date {
      font-size: 0.78rem;
      color: var(--app-text-dim);
    }
    .site-footer {
      background-color: #030712;
      border-top: 1px solid rgba(56, 189, 248, 0.16);
      padding: 4.5rem 0 2rem;
      color: var(--app-text-muted);
    }
    .site-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 1.3rem;
      font-weight: 700;
      color: #ffffff;
    }
    .logo-icon {
      font-size: 1.4rem;
      color: var(--app-primary-glow);
    }
    .footer-title {
      font-size: 1.02rem;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 1.25rem;
      position: relative;
    }
    .footer-nav {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-nav li {
      margin-bottom: 0.65rem;
    }
    .footer-nav a {
      color: var(--app-text-muted);
      font-size: 0.9rem;
    }
    .footer-nav a:hover {
      color: var(--app-primary-glow);
      padding-left: 4px;
    }
    .copyright-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 1.8rem;
      margin-top: 3rem;
      font-size: 0.85rem;
      color: var(--app-text-dim);
    }
    @media (max-width: 991.98px) {
      .article-main-title {
        font-size: 1.85rem;
      }
      .rich-article-box {
        padding: 1.6rem;
      }
    }