/* roulang page: index */
:root {
      --primary-gradient: linear-gradient(135deg, #6366F1 0%, #4F46E5 50%, #4338CA 100%);
      --accent-pink: #EC4899;
      --accent-green: #10B981;
      --gold-gradient: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
      --bg-main: #F8FAFC;
      --bg-alt: #F1F5F9;
      --card-bg: #FFFFFF;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: rgba(226, 232, 240, 0.8);
      --card-shadow: 0 20px 40px -15px rgba(79, 70, 229, 0.08);
      --card-shadow-hover: 0 25px 50px -12px rgba(79, 70, 229, 0.16);
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-sm: 8px;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }

    /* 电商促销细条 */
    .top-promo-bar {
      background: var(--primary-gradient);
      color: #FFFFFF;
      font-size: 13px;
      font-weight: 500;
      padding: 7px 16px;
      text-align: center;
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 12px;
    }
    .top-promo-bar .badge-promo {
      background: var(--accent-pink);
      color: #fff;
      padding: 2px 8px;
      border-radius: 9999px;
      font-size: 11px;
      font-weight: 700;
    }

    /* 主导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
    }
    .brand-logo i {
      color: #4F46E5;
      font-size: 24px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
      margin: 0;
    }
    .nav-menu a {
      font-weight: 600;
      font-size: 15px;
      color: var(--text-body);
    }
    .nav-menu a:hover, .nav-menu a.active {
      color: #4F46E5;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .header-search {
      position: relative;
      display: none;
    }
    @media (min-width: 900px) {
      .header-search { display: block; }
    }
    .header-search input {
      background: var(--bg-alt);
      border: 1px solid var(--border-color);
      border-radius: 9999px;
      padding: 8px 16px 8px 36px;
      font-size: 13px;
      width: 180px;
      margin-bottom: 0;
    }
    .header-search i {
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 13px;
    }
    .btn-cta-nav {
      background: var(--primary-gradient);
      color: #fff !important;
      padding: 9px 20px;
      border-radius: 9999px;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    }
    .btn-cta-nav:hover {
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
      transform: translateY(-1px);
    }

    /* 章节通用样式 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(99, 102, 241, 0.1);
      color: #4F46E5;
      padding: 4px 14px;
      border-radius: 9999px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 680px;
      line-height: 1.7;
    }

    /* 1. Hero 板块：黑金感 + 等级徽章 + 核心控制台大图预览视窗 */
    .hero-blackgold {
      background: radial-gradient(circle at 80% 20%, #1E1B4B 0%, #0F172A 70%, #090D16 100%);
      color: #FFFFFF;
      padding: 90px 0 100px;
      position: relative;
      overflow: hidden;
    }
    .hero-blackgold::before {
      content: "";
      position: absolute;
      top: -30%;
      left: -10%;
      width: 60%;
      height: 160%;
      background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 60%);
      pointer-events: none;
    }
    .badge-tier-vip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(90deg, rgba(245, 158, 11, 0.2) 0%, rgba(217, 119, 6, 0.2) 100%);
      border: 1px solid rgba(245, 158, 11, 0.4);
      color: #FBBF24;
      padding: 6px 16px;
      border-radius: 9999px;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      color: #FFFFFF;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      background: linear-gradient(135deg, #FDE68A 0%, #F59E0B 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-p {
      font-size: 16px;
      color: #94A3B8;
      line-height: 1.75;
      margin-bottom: 32px;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 36px;
    }
    .btn-gold-action {
      background: var(--gold-gradient);
      color: #0F172A;
      font-weight: 700;
      padding: 14px 32px;
      border-radius: 12px;
      font-size: 16px;
      box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .btn-gold-action:hover {
      box-shadow: 0 12px 30px rgba(245, 158, 11, 0.45);
      transform: translateY(-2px);
      color: #000;
    }
    .btn-glass-sub {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #E2E8F0;
      font-weight: 600;
      padding: 14px 28px;
      border-radius: 12px;
      font-size: 15px;
    }
    .btn-glass-sub:hover {
      background: rgba(255, 255, 255, 0.15);
      color: #FFFFFF;
    }
    .hero-console-stage {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.15);
      background: #111827;
      aspect-ratio: 16/10;
    }
    .hero-console-stage img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.85;
      transition: transform 0.5s ease;
    }
    .hero-console-stage:hover img {
      transform: scale(1.03);
    }
    .float-stat-badge {
      position: absolute;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 12px 18px;
      border-radius: var(--radius-md);
      color: #FFFFFF;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
      display: flex;
      align-items: center;
      gap: 12px;
      z-index: 2;
    }
    .float-stat-badge.badge-top {
      top: 18px;
      left: 18px;
    }
    .float-stat-badge.badge-bottom {
      bottom: 18px;
      right: 18px;
    }
    .float-stat-badge .stat-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: var(--primary-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
    }

    /* 卡片体系 */
    .feature-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--card-shadow-hover);
      border-color: rgba(99, 102, 241, 0.3);
    }
    .feature-card .card-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: var(--primary-gradient);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
    }
    .feature-card h4 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 0;
    }

    /* 宽横卡对比 */
    .compare-wide-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--card-shadow);
      height: 100%;
    }
    .compare-badge {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 9999px;
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .compare-badge.success {
      background: rgba(16, 185, 129, 0.12);
      color: var(--accent-green);
    }
    .compare-badge.warning {
      background: rgba(245, 158, 11, 0.12);
      color: #D97706;
    }
    .compare-list {
      list-style: none;
      margin: 18px 0 0;
    }
    .compare-list li {
      position: relative;
      padding-left: 26px;
      font-size: 14px;
      color: var(--text-body);
      margin-bottom: 12px;
    }
    .compare-list li i {
      position: absolute;
      left: 0;
      top: 3px;
    }

    /* 场景画廊卡 */
    .scenario-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .scenario-cover {
      position: relative;
      aspect-ratio: 16/9;
      overflow: hidden;
      background: #E2E8F0;
    }
    .scenario-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .scenario-card:hover .scenario-cover img {
      transform: scale(1.05);
    }
    .scenario-content {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .scenario-content h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .scenario-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex: 1;
      margin-bottom: 16px;
    }
    .scenario-tags {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }
    .scenario-tag-item {
      font-size: 12px;
      background: var(--bg-alt);
      color: var(--text-muted);
      padding: 3px 10px;
      border-radius: 6px;
      font-weight: 600;
    }

    /* 演示走廊 */
    .interactive-stage {
      background: #0F172A;
      border-radius: var(--radius-lg);
      padding: 36px;
      color: #FFFFFF;
      box-shadow: 0 25px 50px -15px rgba(0, 0, 0, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .tab-bar-mock {
      display: flex;
      gap: 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 16px;
      margin-bottom: 24px;
    }
    .tab-pill {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 8px 18px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 600;
      color: #94A3B8;
    }
    .tab-pill.active {
      background: #4F46E5;
      color: #fff;
      border-color: #4F46E5;
    }
    .stage-preview {
      aspect-ratio: 16/8;
      border-radius: var(--radius-md);
      overflow: hidden;
      position: relative;
    }
    .stage-preview img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .stage-bubble {
      position: absolute;
      background: rgba(15, 23, 42, 0.9);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 12px;
      padding: 12px 18px;
      color: #FFFFFF;
      font-size: 13px;
    }
    .stage-bubble.pos-1 { top: 20%; right: 10%; }

    /* 成功案例 */
    .case-metric-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 30px;
      box-shadow: var(--card-shadow);
      height: 100%;
    }
    .case-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .case-data-badge {
      display: inline-block;
      font-size: 26px;
      font-weight: 800;
      color: #4F46E5;
      margin: 12px 0;
    }
    .case-p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 0;
    }

    /* 价格矩阵：全永久免费 */
    .price-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 36px 30px;
      text-align: center;
      box-shadow: var(--card-shadow);
      position: relative;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .price-card.featured {
      border: 2px solid #4F46E5;
      transform: translateY(-8px);
      box-shadow: 0 25px 50px -10px rgba(79, 70, 229, 0.2);
    }
    .featured-ribbon {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-gradient);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 18px;
      border-radius: 9999px;
      text-transform: uppercase;
    }
    .price-tier-name {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .price-number {
      font-size: 40px;
      font-weight: 900;
      color: #0F172A;
      margin-bottom: 6px;
    }
    .price-number span {
      font-size: 16px;
      font-weight: 500;
      color: var(--text-muted);
    }
    .price-tag-free {
      color: var(--accent-green);
      font-weight: 700;
      font-size: 14px;
      margin-bottom: 24px;
    }
    .price-features {
      list-style: none;
      margin: 0 0 28px;
      text-align: left;
      flex: 1;
    }
    .price-features li {
      font-size: 14px;
      color: var(--text-body);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .price-features li i {
      color: var(--accent-green);
    }
    .btn-plan {
      background: var(--bg-alt);
      color: var(--text-main);
      font-weight: 700;
      padding: 12px 24px;
      border-radius: 12px;
      display: block;
      width: 100%;
    }
    .price-card.featured .btn-plan {
      background: var(--primary-gradient);
      color: #FFFFFF;
    }

    /* 评价墙 */
    .review-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      height: 100%;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #4F46E5;
    }
    .review-name {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }
    .review-role {
      font-size: 12px;
      color: var(--text-muted);
    }
    .review-text {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 0;
    }

    /* 指标见证 */
    .stat-bar-box {
      background: var(--primary-gradient);
      border-radius: var(--radius-lg);
      padding: 48px 36px;
      color: #FFFFFF;
      box-shadow: 0 20px 45px -10px rgba(79, 70, 229, 0.4);
    }
    .stat-unit {
      text-align: center;
      padding: 12px;
    }
    .stat-num {
      font-size: 38px;
      font-weight: 900;
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.85);
      font-weight: 500;
    }

    /* CMS 资讯卡 */
    .post-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .post-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
    }
    .post-cover {
      position: relative;
      aspect-ratio: 16/10;
      overflow: hidden;
      background: #E2E8F0;
    }
    .post-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .post-body {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .post-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .post-meta .post-cat {
      color: #4F46E5;
      font-weight: 600;
    }
    .post-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .post-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      flex: 1;
      margin-bottom: 16px;
    }
    .post-link {
      color: #4F46E5;
      font-weight: 700;
      font-size: 13px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .cms-empty {
      padding: 48px;
      text-align: center;
      color: var(--text-muted);
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px dashed var(--border-color);
    }

    /* 终端开通 CTA */
    .cta-banner {
      background: radial-gradient(circle at 50% 50%, #1E1B4B 0%, #0F172A 100%);
      color: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      text-align: center;
      position: relative;
      overflow: hidden;
      box-shadow: 0 25px 50px -15px rgba(15, 23, 42, 0.6);
    }
    .cta-banner h3 {
      font-size: 32px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
    }
    .cta-banner p {
      font-size: 16px;
      color: #94A3B8;
      max-width: 600px;
      margin: 0 auto 32px;
      line-height: 1.7;
    }
    .btn-main-cta {
      background: var(--primary-gradient);
      color: #FFFFFF;
      font-weight: 700;
      padding: 15px 38px;
      border-radius: 9999px;
      font-size: 16px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
    }
    .btn-main-cta:hover {
      box-shadow: 0 15px 35px rgba(99, 102, 241, 0.55);
      transform: translateY(-2px);
      color: #fff;
    }

    /* 页脚标准 */
    .site-footer {
      background: #0B0F19;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-badges {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      margin-top: 16px;
    }
    .footer-badge-tag {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 12px;
      color: #64748B;
    }
    .footer-bottom {
      margin-top: 50px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* 移动端菜单抽屉 */
    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 20px;
      color: var(--text-main);
      cursor: pointer;
    }
    @media (max-width: 899px) {
      .nav-menu { display: none; }
      .mobile-menu-toggle { display: block; }
      .hero-title { font-size: 32px; }
      .section-title { font-size: 26px; }
      .cta-banner h3 { font-size: 24px; }
    }

/* roulang page: article */
:root {
      --primary-gradient: linear-gradient(135deg, #6366F1 0%, #4F46E5 50%, #4338CA 100%);
      --accent-pink: #EC4899;
      --accent-green: #10B981;
      --gold-gradient: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
      --bg-main: #F8FAFC;
      --bg-alt: #F1F5F9;
      --card-bg: #FFFFFF;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: rgba(226, 232, 240, 0.8);
      --card-shadow: 0 20px 40px -15px rgba(79, 70, 229, 0.08);
      --card-shadow-hover: 0 25px 50px -12px rgba(79, 70, 229, 0.16);
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-sm: 8px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      margin: 0;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    .site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
    }
    .brand-logo i { color: #4F46E5; font-size: 24px; }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
      margin: 0;
    }
    .nav-menu a {
      font-weight: 600;
      font-size: 15px;
      color: var(--text-body);
    }
    .nav-menu a:hover, .nav-menu a.active { color: #4F46E5; }
    .header-actions { display: flex; align-items: center; gap: 16px; }
    .header-search { position: relative; display: block; }
    .header-search input {
      background: var(--bg-alt);
      border: 1px solid var(--border-color);
      border-radius: 9999px;
      padding: 8px 16px 8px 36px;
      font-size: 13px;
      width: 180px;
      margin-bottom: 0;
    }
    .header-search i {
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 13px;
    }
    .btn-cta-nav {
      background: var(--primary-gradient);
      color: #fff !important;
      padding: 9px 20px;
      border-radius: 9999px;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    }
    .btn-cta-nav:hover {
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
      transform: translateY(-1px);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 20px;
      color: var(--text-main);
      cursor: pointer;
    }
    @media (max-width: 768px) {
      .nav-menu, .header-search { display: none; }
      .mobile-menu-toggle { display: block; }
    }
    .article-hero {
      position: relative;
      background: #0B0F19;
      color: #FFFFFF;
      padding: 70px 0 80px;
      overflow: hidden;
    }
    .article-hero-bg {
      position: absolute;
      inset: 0;
      opacity: 0.22;
      background-size: cover;
      background-position: center;
      filter: blur(2px);
    }
    .article-hero-content {
      position: relative;
      z-index: 2;
    }
    .meta-crumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: #94A3B8;
      margin-bottom: 24px;
      flex-wrap: wrap;
    }
    .meta-crumb a:hover { color: #FFFFFF; }
    .badge-pill-status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(16, 185, 129, 0.18);
      color: #34D399;
      border: 1px solid rgba(16, 185, 129, 0.35);
      padding: 4px 14px;
      border-radius: 9999px;
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .article-h1 {
      font-size: 34px;
      font-weight: 900;
      line-height: 1.35;
      color: #FFFFFF;
      margin-bottom: 20px;
      max-width: 960px;
    }
    @media (max-width: 640px) {
      .article-h1 { font-size: 26px; }
    }
    .article-info-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 20px;
      font-size: 14px;
      color: #94A3B8;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 20px;
    }
    .article-info-bar span { display: inline-flex; align-items: center; gap: 6px; }
    .article-main-wrap {
      padding: 60px 0 80px;
    }
    .article-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      padding: 48px;
    }
    @media (max-width: 640px) {
      .article-card { padding: 24px 16px; }
    }
    .article-body {
      font-size: 16px;
      line-height: 1.85;
      color: var(--text-body);
    }
    .article-body h2 {
      font-size: 24px;
      font-weight: 800;
      color: var(--text-main);
      margin: 40px 0 18px;
      padding-bottom: 10px;
      border-bottom: 2px solid #EEF2F6;
    }
    .article-body h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin: 30px 0 14px;
    }
    .article-body p { margin-bottom: 20px; }
    .article-body ul, .article-body ol { margin-bottom: 24px; padding-left: 24px; }
    .article-body li { margin-bottom: 8px; }
    .article-body blockquote {
      border-left: 4px solid #6366F1;
      padding: 12px 20px;
      background: #F8FAFC;
      color: #475569;
      font-style: normal;
      margin: 24px 0;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    }
    .compliance-box {
      background: #F8FAFC;
      border: 1px dashed #CBD5E1;
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 48px;
      display: flex;
      align-items: flex-start;
      gap: 16px;
    }
    .compliance-box i { font-size: 24px; color: #4F46E5; margin-top: 2px; }
    .compliance-box h4 { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 6px; }
    .compliance-box p { font-size: 14px; color: var(--text-muted); margin-bottom: 0; line-height: 1.6; }
    .nav-pagination {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      margin-top: 40px;
      flex-wrap: wrap;
    }
    .nav-btn-link {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 14px 24px;
      border-radius: var(--radius-md);
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    }
    .nav-btn-link:hover {
      border-color: #6366F1;
      color: #4F46E5;
      transform: translateY(-2px);
    }
    .side-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 28px;
      box-shadow: var(--card-shadow);
      margin-bottom: 30px;
    }
    .side-title {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .side-checklist {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .side-checklist li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--text-body);
      margin-bottom: 14px;
    }
    .side-checklist li i { color: var(--accent-green); }
    .related-stream-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      margin-bottom: 16px;
      transition: all 0.25s ease;
      display: flex;
      gap: 14px;
      padding: 12px;
    }
    .related-stream-card:hover {
      transform: translateY(-2px);
      box-shadow: var(--card-shadow);
    }
    .related-stream-thumb {
      width: 88px;
      height: 64px;
      border-radius: var(--radius-sm);
      object-fit: cover;
      flex-shrink: 0;
    }
    .related-stream-title {
      font-size: 13px;
      font-weight: 700;
      line-height: 1.4;
      color: var(--text-main);
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .related-stream-time {
      font-size: 11px;
      color: var(--text-muted);
      margin-top: 4px;
    }
    .site-footer {
      background: #090D16;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links { list-style: none; margin: 0; padding: 0; }
    .footer-links li { margin-bottom: 10px; font-size: 14px; }
    .footer-links a:hover { color: #FFFFFF; }
    .footer-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 20px;
    }
    .footer-badge-tag {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 12px;
      color: #CBD5E1;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 50px;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
    }

/* roulang page: category1 */
:root {
      --primary-gradient: linear-gradient(135deg, #6366F1 0%, #4F46E5 50%, #4338CA 100%);
      --accent-pink: #EC4899;
      --accent-green: #10B981;
      --gold-gradient: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
      --bg-main: #F8FAFC;
      --bg-alt: #F1F5F9;
      --card-bg: #FFFFFF;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: rgba(226, 232, 240, 0.8);
      --card-shadow: 0 20px 40px -15px rgba(79, 70, 229, 0.08);
      --card-shadow-hover: 0 25px 50px -12px rgba(79, 70, 229, 0.16);
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-sm: 8px;
    }
    * { box-sizing: border-box; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.65;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }

    .top-promo-bar {
      background: var(--primary-gradient);
      color: #FFFFFF;
      font-size: 13px;
      font-weight: 500;
      padding: 7px 0;
      text-align: center;
    }
    .top-promo-bar .badge-promo {
      background: var(--accent-pink);
      color: #fff;
      padding: 2px 8px;
      border-radius: 9999px;
      font-size: 11px;
      font-weight: 700;
      margin-right: 8px;
    }
    .site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
    }
    .brand-logo i {
      color: #4F46E5;
      font-size: 24px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
      margin: 0;
    }
    .nav-menu a {
      font-weight: 600;
      font-size: 15px;
      color: var(--text-body);
    }
    .nav-menu a:hover, .nav-menu a.active {
      color: #4F46E5;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .header-search {
      position: relative;
      display: block;
    }
    .header-search input {
      background: var(--bg-alt);
      border: 1px solid var(--border-color);
      border-radius: 9999px;
      padding: 8px 16px 8px 36px;
      font-size: 13px;
      width: 180px;
      margin-bottom: 0;
      height: auto;
    }
    .header-search i {
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 13px;
    }
    .btn-cta-nav {
      background: var(--primary-gradient);
      color: #fff !important;
      padding: 9px 20px;
      border-radius: 9999px;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    }
    .btn-cta-nav:hover {
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
      transform: translateY(-1px);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 20px;
      color: var(--text-main);
      cursor: pointer;
    }

    .category-header-strip {
      background: #0F172A;
      color: #FFFFFF;
      padding: 48px 0 52px;
      position: relative;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .breadcrumb-nav {
      font-size: 13px;
      color: #94A3B8;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .breadcrumb-nav a { color: #CBD5E1; }
    .breadcrumb-nav a:hover { color: #FFFFFF; }
    .cat-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(99, 102, 241, 0.2);
      border: 1px solid rgba(99, 102, 241, 0.4);
      color: #A5B4FC;
      padding: 4px 12px;
      border-radius: 9999px;
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .cat-h1 {
      font-size: 34px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 10px;
      letter-spacing: -0.5px;
    }
    .cat-sub {
      font-size: 16px;
      color: #94A3B8;
      max-width: 760px;
      margin: 0;
      line-height: 1.6;
    }

    .filter-bar-section {
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
      padding: 18px 0;
    }
    .filter-group {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
    }
    .filter-label {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-muted);
      margin-right: 6px;
    }
    .filter-chip {
      background: var(--bg-alt);
      border: 1px solid var(--border-color);
      color: var(--text-body);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: 9999px;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .filter-chip.active, .filter-chip:hover {
      background: #4F46E5;
      color: #FFFFFF;
      border-color: #4F46E5;
    }

    .section-wrap {
      padding: 64px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-header {
      margin-bottom: 36px;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(99, 102, 241, 0.1);
      color: #4F46E5;
      padding: 4px 14px;
      border-radius: 9999px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 680px;
      line-height: 1.6;
    }

    .res-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      height: 100%;
      transition: all 0.3s ease;
      margin-bottom: 24px;
    }
    .res-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
      border-color: rgba(99, 102, 241, 0.3);
    }
    .res-thumb-wrap {
      position: relative;
      aspect-ratio: 16/10;
      background: #0F172A;
      overflow: hidden;
    }
    .res-thumb-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .res-card:hover .res-thumb-wrap img {
      transform: scale(1.05);
    }
    .res-status-tag {
      position: absolute;
      top: 12px;
      right: 12px;
      background: rgba(16, 185, 129, 0.9);
      backdrop-filter: blur(4px);
      color: #FFFFFF;
      font-size: 11px;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 9999px;
    }
    .res-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .res-meta {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .res-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .res-excerpt {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .res-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
      margin-top: auto;
    }
    .btn-download-link {
      color: #4F46E5;
      font-weight: 700;
      font-size: 13px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-download-link:hover { color: #3730A3; }

    .path-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--card-shadow);
      height: 100%;
      margin-bottom: 24px;
    }
    .path-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(79, 70, 229, 0.1);
      color: #4F46E5;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 16px;
    }
    .path-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .path-p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }
    .path-points {
      list-style: none;
      margin: 0;
      padding: 0;
      font-size: 13px;
      color: var(--text-body);
    }
    .path-points li {
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .path-points i { color: var(--accent-green); font-size: 12px; }

    .rule-card {
      background: #FFFFFF;
      border: 1px dashed #CBD5E1;
      border-radius: var(--radius-sm);
      padding: 20px;
      margin-bottom: 20px;
      height: 100%;
    }
    .rule-card h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .rule-card h4 i { color: #F59E0B; }
    .rule-card p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
      line-height: 1.6;
    }

    .accordion-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      padding: 16px 20px;
    }
    .accordion-question {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .accordion-question i { color: #4F46E5; }
    .accordion-answer {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }

    .cta-strip-block {
      background: linear-gradient(135deg, #1E1B4B 0%, #0F172A 100%);
      border-radius: var(--radius-lg);
      padding: 48px 40px;
      color: #FFFFFF;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.4);
    }
    .cta-text h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 8px;
      color: #FFFFFF;
    }
    .cta-text p {
      font-size: 15px;
      color: #94A3B8;
      margin: 0;
    }
    .btn-solid-install {
      background: #10B981;
      color: #FFFFFF !important;
      font-weight: 700;
      padding: 14px 32px;
      border-radius: 9999px;
      font-size: 15px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
    }
    .btn-solid-install:hover {
      background: #059669;
      transform: translateY(-2px);
    }

    .site-footer {
      background: #090D16;
      color: #94A3B8;
      padding: 70px 0 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-col h5 {
      color: #F8FAFC;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
      line-height: 2.1;
      font-size: 14px;
    }
    .footer-links a { color: #94A3B8; }
    .footer-links a:hover { color: #FFFFFF; }
    .footer-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 16px;
    }
    .footer-badge-tag {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      color: #CBD5E1;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      margin-top: 50px;
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 12px;
      font-size: 13px;
      color: #64748B;
    }

    @media screen and (max-width: 1024px) {
      .header-search { display: none; }
    }
    @media screen and (max-width: 640px) {
      .nav-menu { display: none; }
      .mobile-menu-toggle { display: block; }
      .cat-h1 { font-size: 26px; }
      .section-title { font-size: 22px; }
      .cta-strip-block { padding: 32px 20px; }
    }