/* roulang page: index */
:root {
      --primary: #E11D48;
      --primary-dark: #BE123C;
      --primary-light: #FFE4E6;
      --accent: #F43F5E;
      --accent-soft: #FB7185;
      --dark-bg: #0F172A;
      --dark-card: #1E293B;
      --dark-border: #334155;
      --text-main: #0F172A;
      --text-sub: #475569;
      --text-muted: #94A3B8;
      --light-bg: #F8FAFC;
      --white: #FFFFFF;
      --border-color: #E2E8F0;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 8px 24px -4px rgba(225, 29, 72, 0.08);
      --shadow-lg: 0 16px 36px -6px rgba(225, 29, 72, 0.14);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.28s ease-in-out;
    }

    * { box-sizing: border-box; }
    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--white);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    img { max-width: 100%; height: auto; display: block; }
    h1, h2, h3, h4, h5, h6 {
      font-weight: 700;
      line-height: 1.35;
      color: var(--text-main);
      margin: 0 0 14px 0;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      box-shadow: 0 4px 12px rgba(225, 29, 72, 0.28);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 32px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .main-nav a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-sub);
      position: relative;
      padding: 6px 0;
    }
    .main-nav a:hover,
    .main-nav a.active {
      color: var(--primary);
    }
    .main-nav a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2.5px;
      background: var(--primary);
      border-radius: 2px;
    }
    .header-action .btn-nav {
      display: inline-flex;
      align-items: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      box-shadow: 0 4px 14px rgba(225, 29, 72, 0.25);
    }
    .header-action .btn-nav:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(225, 29, 72, 0.35);
      color: #fff;
    }

    /* 移动端菜单切换按钮 */
    .mobile-menu-btn {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-menu-btn span {
      width: 24px;
      height: 2.5px;
      background: var(--text-main);
      border-radius: 2px;
    }

    /* 公共按钮与标签 */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      font-weight: 600;
      font-size: 15px;
      border-radius: var(--radius-sm);
      box-shadow: 0 6px 20px rgba(225, 29, 72, 0.25);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(225, 29, 72, 0.35);
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      background: rgba(255, 255, 255, 0.9);
      color: var(--text-main);
      font-weight: 600;
      font-size: 15px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }
    .badge-pill {
      display: inline-flex;
      align-items: center;
      padding: 6px 14px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.5px;
      margin-bottom: 16px;
    }

    /* 通用板块与排版 */
    .section-pad {
      padding: 85px 0;
    }
    .section-pad-sm {
      padding: 60px 0;
    }
    .bg-light {
      background-color: var(--light-bg);
    }
    .bg-dark {
      background-color: var(--dark-bg);
      color: #fff;
    }
    .section-title-wrap {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 52px auto;
    }
    .section-title {
      font-size: 32px;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .bg-dark .section-title {
      color: #fff;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-sub);
      line-height: 1.75;
      margin: 0;
    }
    .bg-dark .section-desc {
      color: var(--text-muted);
    }

    /* 1. Hero 看板首屏 */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.72)), url('/assets/images/1357ccd3f2c27130.webp') center center/cover no-repeat;
      padding: 95px 0 110px 0;
      color: #fff;
      overflow: hidden;
    }
    .hero-content {
      max-width: 780px;
    }
    .hero-title {
      font-size: 44px;
      line-height: 1.28;
      color: #fff;
      margin-bottom: 22px;
      font-weight: 800;
      letter-spacing: -0.5px;
    }
    .hero-lead {
      font-size: 18px;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 36px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 48px;
    }
    .hero-metrics-board {
      background: rgba(30, 41, 59, 0.75);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
    }
    .metric-item {
      padding: 16px;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-val {
      font-size: 38px;
      font-weight: 800;
      color: #fff;
      line-height: 1.1;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }
    .metric-val span {
      font-size: 20px;
      color: var(--accent);
      margin-left: 2px;
    }
    .metric-label {
      font-size: 14px;
      color: var(--text-muted);
      margin: 0;
    }

    /* 2. 服务矩阵 */
    .service-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      height: 100%;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-6px);
      border-color: rgba(225, 29, 72, 0.3);
      box-shadow: var(--shadow-lg);
    }
    .service-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 22px;
    }
    .service-card h3 {
      font-size: 20px;
      margin-bottom: 12px;
    }
    .service-card p {
      font-size: 14.5px;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 0;
      flex-grow: 1;
    }

    /* 3. 转码与传输结果对比 */
    .compare-box {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .compare-header {
      background: #F1F5F9;
      padding: 18px 24px;
      display: grid;
      grid-template-columns: 2fr 3fr 3fr;
      font-weight: 700;
      color: var(--text-main);
      font-size: 15px;
    }
    .compare-row {
      display: grid;
      grid-template-columns: 2fr 3fr 3fr;
      padding: 22px 24px;
      border-top: 1px solid var(--border-color);
      align-items: center;
      font-size: 14.5px;
    }
    .compare-row:nth-child(even) {
      background: #FAFAFA;
    }
    .compare-tag-good {
      color: var(--primary-dark);
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .compare-tag-normal {
      color: var(--text-sub);
    }

    /* 4. 流媒体演进里程碑 */
    .timeline-wrap {
      position: relative;
      padding: 20px 0;
    }
    .timeline-wrap::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: var(--border-color);
      transform: translateX(-50%);
    }
    .timeline-node {
      position: relative;
      margin-bottom: 40px;
    }
    .timeline-node:last-child {
      margin-bottom: 0;
    }
    .timeline-point {
      position: absolute;
      top: 20px;
      left: 50%;
      width: 16px;
      height: 16px;
      background: var(--primary);
      border: 4px solid #fff;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.2);
      transform: translateX(-50%);
      z-index: 2;
    }
    .timeline-box {
      width: 44%;
      background: #fff;
      padding: 24px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .timeline-node:nth-child(odd) .timeline-box {
      margin-left: auto;
    }
    .timeline-date {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
      text-transform: uppercase;
    }
    .timeline-box h4 {
      font-size: 18px;
      margin-bottom: 10px;
    }
    .timeline-box p {
      font-size: 14px;
      color: var(--text-sub);
      margin: 0;
      line-height: 1.65;
    }

    /* 5. CMS 资讯中心板块 */
    .news-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(225, 29, 72, 0.25);
    }
    .news-card-media {
      position: relative;
      padding-top: 56.25%;
      overflow: hidden;
      background: #E2E8F0;
    }
    .news-card-media img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .news-card:hover .news-card-media img {
      transform: scale(1.05);
    }
    .news-card-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .news-category-badge {
      background: var(--primary-light);
      color: var(--primary-dark);
      padding: 2px 10px;
      border-radius: 4px;
      font-weight: 600;
    }
    .news-card-title {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .news-card-desc {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .news-card-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .empty-cms-notice {
      text-align: center;
      padding: 60px 20px;
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px dashed var(--border-color);
      color: var(--text-muted);
      font-size: 16px;
    }
    .news-action-more {
      text-align: center;
      margin-top: 48px;
    }

    /* 6. 多端生态与播放场景 */
    .eco-item {
      background: var(--dark-card);
      border: 1px solid var(--dark-border);
      border-radius: var(--radius-md);
      padding: 28px;
      color: #fff;
      height: 100%;
    }
    .eco-item h4 {
      color: #fff;
      font-size: 19px;
      margin-bottom: 12px;
    }
    .eco-item p {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.65;
      margin: 0;
    }

    /* 7. 平台保障 */
    .assurance-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 22px;
      text-align: center;
    }
    .assurance-icon {
      width: 60px;
      height: 60px;
      margin: 0 auto 18px auto;
      border-radius: 50%;
      background: #FFF1F2;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 26px;
    }
    .assurance-card h4 {
      font-size: 18px;
      margin-bottom: 10px;
    }
    .assurance-card p {
      font-size: 13.5px;
      color: var(--text-sub);
      margin: 0;
      line-height: 1.6;
    }

    /* 8. 热门功能专题（Z字型图文） */
    .feature-row {
      display: flex;
      align-items: center;
      gap: 48px;
      margin-bottom: 70px;
    }
    .feature-row:last-child {
      margin-bottom: 0;
    }
    .feature-row.reverse {
      flex-direction: row-reverse;
    }
    .feature-text-side {
      flex: 1;
    }
    .feature-img-side {
      flex: 1;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .feature-img-side img {
      width: 100%;
      height: 360px;
      object-fit: cover;
    }
    .feature-text-side h3 {
      font-size: 26px;
      margin-bottom: 16px;
    }
    .feature-text-side p {
      font-size: 15px;
      color: var(--text-sub);
      line-height: 1.75;
      margin-bottom: 22px;
    }
    .feature-checklist {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .feature-checklist li {
      position: relative;
      padding-left: 24px;
      margin-bottom: 10px;
      font-size: 14.5px;
      color: var(--text-main);
    }
    .feature-checklist li::before {
      content: '✓';
      position: absolute;
      left: 0;
      color: var(--primary);
      font-weight: bold;
    }

    /* 9. 客户声音 */
    .testimonial-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }
    .quote-text {
      font-size: 15px;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: italic;
    }
    .quote-author {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .author-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }
    .author-info h5 {
      font-size: 15px;
      margin: 0 0 2px 0;
    }
    .author-info span {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 10. 接入方案矩阵 */
    .plan-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      text-align: center;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .plan-card.featured {
      border: 2px solid var(--primary);
      position: relative;
      transform: scale(1.02);
      box-shadow: var(--shadow-lg);
    }
    .plan-featured-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #fff;
      padding: 3px 14px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.5px;
    }
    .plan-card h3 {
      font-size: 22px;
      margin-bottom: 12px;
    }
    .plan-card .plan-desc {
      font-size: 14px;
      color: var(--text-sub);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .plan-specs {
      list-style: none;
      padding: 0;
      margin: 0 0 30px 0;
      text-align: left;
      flex-grow: 1;
    }
    .plan-specs li {
      padding: 10px 0;
      border-bottom: 1px dashed var(--border-color);
      font-size: 14px;
      color: var(--text-sub);
    }
    .plan-specs li:last-child {
      border-bottom: none;
    }

    /* 11. 常见操作索引 */
    .trouble-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }
    .trouble-number {
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
    }
    .trouble-card h4 {
      font-size: 16px;
      margin-bottom: 6px;
    }
    .trouble-card p {
      font-size: 13.5px;
      color: var(--text-sub);
      margin: 0;
      line-height: 1.6;
    }

    /* 12. FAQ 折叠手风琴 */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      background: #fff;
    }
    .faq-question {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 16px;
      color: var(--text-main);
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-toggle-icon {
      font-size: 20px;
      font-weight: 400;
      transition: var(--transition);
      color: var(--primary);
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #FAFAFA;
      color: var(--text-sub);
      font-size: 14.5px;
      line-height: 1.75;
    }
    .faq-answer-inner {
      padding: 0 24px 20px 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
    }

    /* 13. 生态伙伴 */
    .partner-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
      gap: 20px;
      align-items: center;
    }
    .partner-box {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .partner-box:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    /* 14. 全景转化表单 */
    .convert-card {
      background: linear-gradient(135deg, #1E293B, #0F172A);
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      color: #fff;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .convert-form label {
      color: #E2E8F0;
      font-size: 14px;
      margin-bottom: 6px;
      display: block;
      font-weight: 600;
    }
    .convert-form input,
    .convert-form select,
    .convert-form textarea {
      width: 100%;
      height: 48px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      padding: 0 16px;
      color: #fff;
      margin-bottom: 18px;
      font-size: 14px;
      transition: var(--transition);
    }
    .convert-form input:focus,
    .convert-form select:focus,
    .convert-form textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.25);
      background: rgba(255, 255, 255, 0.14);
    }
    .convert-form select option {
      background: #0F172A;
      color: #fff;
    }
    .privacy-notice {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 14px;
      text-align: center;
      line-height: 1.5;
    }

    /* 页脚 */
    .site-footer {
      background: #0B1120;
      color: #94A3B8;
      padding: 70px 0 30px 0;
      border-top: 1px solid #1E293B;
    }
    .footer-brand h4 {
      color: #fff;
      font-size: 20px;
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      margin-bottom: 20px;
      max-width: 320px;
    }
    .footer-col h5 {
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 13.5px;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      margin-top: 50px;
      padding-top: 24px;
      border-top: 1px solid #1E293B;
      font-size: 13px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 移动端响应式调整 */
    @media (max-width: 1024px) {
      .compare-header, .compare-row {
        grid-template-columns: 1.5fr 2fr 2fr;
      }
      .feature-row {
        gap: 32px;
      }
    }
    @media (max-width: 768px) {
      .section-pad {
        padding: 50px 0;
      }
      .mobile-menu-btn {
        display: flex;
      }
      .main-nav, .header-action {
        display: none;
      }
      .main-nav.mobile-active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        gap: 18px;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-lead {
        font-size: 15px;
      }
      .metric-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding: 12px 0;
      }
      .metric-item:last-child {
        border-bottom: none;
      }
      .timeline-wrap::before {
        left: 18px;
      }
      .timeline-point {
        left: 18px;
      }
      .timeline-box {
        width: calc(100% - 44px);
        margin-left: 44px !important;
      }
      .feature-row, .feature-row.reverse {
        flex-direction: column;
        gap: 24px;
      }
      .feature-img-side img {
        height: 220px;
      }
      .compare-box {
        overflow-x: auto;
      }
      .compare-header, .compare-row {
        min-width: 600px;
      }
      .convert-card {
        padding: 32px 20px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

/* roulang page: article */
:root {
      --primary: #E11D48;
      --primary-dark: #BE123C;
      --primary-light: #FFE4E6;
      --accent: #F43F5E;
      --accent-soft: #FB7185;
      --dark-bg: #0F172A;
      --dark-card: #1E293B;
      --dark-border: #334155;
      --text-main: #0F172A;
      --text-sub: #475569;
      --text-muted: #94A3B8;
      --light-bg: #F8FAFC;
      --white: #FFFFFF;
      --border-color: #E2E8F0;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 8px 24px -4px rgba(225, 29, 72, 0.08);
      --shadow-lg: 0 16px 36px -6px rgba(225, 29, 72, 0.14);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.28s ease-in-out;
    }
    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--light-bg);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    img { max-width: 100%; height: auto; display: block; }
    
    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      box-shadow: 0 4px 12px rgba(225, 29, 72, 0.28);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 32px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .main-nav a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-sub);
      position: relative;
      padding: 6px 0;
    }
    .main-nav a:hover,
    .main-nav a.active {
      color: var(--primary);
    }
    .main-nav a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2.5px;
      background: var(--primary);
      border-radius: 2px;
    }
    .header-action .btn-nav {
      display: inline-flex;
      align-items: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      box-shadow: 0 4px 14px rgba(225, 29, 72, 0.25);
    }
    .header-action .btn-nav:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(225, 29, 72, 0.35);
      color: #fff;
    }
    .mobile-menu-btn {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-menu-btn span {
      width: 24px;
      height: 2.5px;
      background: var(--text-main);
      border-radius: 2px;
    }

    /* 文档/软文 Hero 样式 */
    .article-hero {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      color: #fff;
      padding: 44px 0 54px 0;
      position: relative;
      border-bottom: 1px solid var(--dark-border);
    }
    .article-breadcrumbs {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .article-breadcrumbs a { color: #CBD5E1; }
    .article-breadcrumbs a:hover { color: var(--primary-light); }
    .article-breadcrumbs span { opacity: 0.6; }
    
    .article-hero-title {
      font-size: 34px;
      line-height: 1.35;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .article-meta-tags {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 18px;
      font-size: 14px;
      color: #94A3B8;
    }
    .article-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(225, 29, 72, 0.2);
      border: 1px solid rgba(225, 29, 72, 0.4);
      color: #FECDD3;
      padding: 4px 12px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 13px;
    }
    
    /* 核心内容区 */
    .article-main-wrap {
      padding: 48px 0 72px 0;
    }
    .article-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 48px;
      box-shadow: var(--shadow-sm);
    }
    .article-summary-box {
      background: #FFF1F2;
      border-left: 4px solid var(--primary);
      padding: 20px 24px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin-bottom: 36px;
    }
    .summary-label {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-dark);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 6px;
    }
    .summary-text {
      font-size: 15px;
      color: var(--text-sub);
      line-height: 1.7;
      margin: 0;
    }

    /* 正文富文本样式 */
    .article-body-content {
      font-size: 16px;
      line-height: 1.85;
      color: #334155;
    }
    .article-body-content h2 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      margin: 36px 0 16px 0;
      padding-bottom: 10px;
      border-bottom: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .article-body-content h2::before {
      content: '';
      display: inline-block;
      width: 4px;
      height: 20px;
      background: var(--primary);
      border-radius: 2px;
    }
    .article-body-content h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin: 28px 0 12px 0;
    }
    .article-body-content p {
      margin-bottom: 20px;
    }
    .article-body-content ul, .article-body-content ol {
      margin: 0 0 24px 24px;
      padding: 0;
      color: var(--text-sub);
    }
    .article-body-content li {
      margin-bottom: 8px;
    }
    .article-body-content blockquote {
      margin: 24px 0;
      padding: 16px 22px;
      background: var(--light-bg);
      border-left: 4px solid var(--accent);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      font-style: italic;
      color: var(--text-sub);
    }
    .article-body-content pre, .article-body-content code {
      font-family: SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      background: #0F172A;
      color: #E2E8F0;
      border-radius: 6px;
    }
    .article-body-content code {
      padding: 2px 6px;
      font-size: 0.9em;
      background: #F1F5F9;
      color: var(--primary-dark);
    }
    .article-body-content pre {
      padding: 16px 20px;
      overflow-x: auto;
      margin: 24px 0;
    }
    .article-body-content pre code {
      background: none;
      color: inherit;
      padding: 0;
    }
    .article-body-content img {
      border-radius: var(--radius-md);
      margin: 28px auto;
      box-shadow: var(--shadow-md);
    }

    /* 文中高亮提示卡片 */
    .article-notice-card {
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      margin: 36px 0;
      display: flex;
      align-items: flex-start;
      gap: 16px;
    }
    .notice-icon {
      width: 40px;
      height: 40px;
      flex-shrink: 0;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: bold;
    }
    .notice-content h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .notice-content p {
      font-size: 14px;
      color: var(--text-sub);
      margin: 0;
      line-height: 1.6;
    }

    /* 文章底端声明与标签 */
    .article-disclaimer {
      margin-top: 40px;
      padding-top: 24px;
      border-top: 1px dashed var(--border-color);
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .article-tags-flow {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .article-tag-item {
      display: inline-block;
      background: #F1F5F9;
      color: var(--text-sub);
      padding: 4px 12px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 500;
    }
    .article-tag-item:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
    }

    /* 侧边挂靠与辅助信息 */
    .article-sidebar {
      position: sticky;
      top: 96px;
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .sidebar-widget {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .sidebar-widget-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      padding-bottom: 8px;
      border-bottom: 2px solid var(--light-bg);
      position: relative;
    }
    .sidebar-widget-title::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 28px;
      height: 2px;
      background: var(--primary);
    }
    .sidebar-feature-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .sidebar-feature-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 0;
      border-bottom: 1px solid #F1F5F9;
      font-size: 14px;
      color: var(--text-sub);
    }
    .sidebar-feature-list li:last-child {
      border-bottom: none;
    }
    .sidebar-feature-list .dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary);
    }

    /* 侧边 CTA 盒 */
    .sidebar-cta-box {
      background: linear-gradient(135deg, #0F172A, #1E293B);
      color: #fff;
      border-radius: var(--radius-md);
      padding: 28px 22px;
      text-align: center;
      border: 1px solid var(--dark-border);
    }
    .sidebar-cta-box h4 {
      font-size: 18px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 10px;
    }
    .sidebar-cta-box p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .sidebar-cta-box .btn-primary {
      width: 100%;
      font-size: 14px;
      padding: 10px 18px;
    }

    /* 底部相关推荐与联络引导 */
    .article-bottom-section {
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      padding: 60px 0;
    }
    .related-title {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 24px;
      text-align: center;
      color: var(--text-main);
    }
    .related-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .related-card {
      background: var(--light-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 20px;
      transition: var(--transition);
    }
    .related-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-light);
    }
    .related-card-tag {
      font-size: 12px;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 8px;
      display: block;
    }
    .related-card-title {
      font-size: 15px;
      font-weight: 700;
      line-height: 1.5;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .related-card-meta {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 空状态提示 */
    .article-empty-wrap {
      text-align: center;
      padding: 80px 20px;
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px dashed var(--border-color);
    }
    .article-empty-wrap h3 {
      font-size: 22px;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .article-empty-wrap p {
      color: var(--text-sub);
      margin-bottom: 24px;
    }

    /* 按钮通用 */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 24px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      font-weight: 600;
      font-size: 15px;
      border-radius: var(--radius-sm);
      box-shadow: 0 4px 16px rgba(225, 29, 72, 0.25);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(225, 29, 72, 0.35);
    }

    /* 页脚 */
    .site-footer {
      background: #0B1120;
      color: #94A3B8;
      padding: 64px 0 32px 0;
      border-top: 1px solid var(--dark-border);
      font-size: 14px;
    }
    .footer-col h4, .footer-col h5 {
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      color: #94A3B8;
      margin-top: 12px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      margin-top: 48px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 16px;
      font-size: 13px;
      color: #64748B;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .related-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .main-nav {
        display: none;
      }
      .mobile-menu-btn {
        display: flex;
      }
      .header-action {
        display: none;
      }
      .article-hero {
        padding: 32px 0 40px 0;
      }
      .article-hero-title {
        font-size: 24px;
      }
      .article-card {
        padding: 24px 18px;
      }
      .article-sidebar {
        margin-top: 32px;
        position: static;
      }
      .related-grid {
        grid-template-columns: 1fr;
      }
    }

/* roulang page: category1 */
:root {
      --primary: #E11D48;
      --primary-dark: #BE123C;
      --primary-light: #FFE4E6;
      --accent: #F43F5E;
      --accent-soft: #FB7185;
      --dark-bg: #0F172A;
      --dark-card: #1E293B;
      --dark-border: #334155;
      --text-main: #0F172A;
      --text-sub: #475569;
      --text-muted: #94A3B8;
      --light-bg: #F8FAFC;
      --white: #FFFFFF;
      --border-color: #E2E8F0;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 8px 24px -4px rgba(225, 29, 72, 0.08);
      --shadow-lg: 0 16px 36px -6px rgba(225, 29, 72, 0.14);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.28s ease-in-out;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--white);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    img { max-width: 100%; height: auto; display: block; }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      box-shadow: 0 4px 12px rgba(225, 29, 72, 0.28);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 32px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .main-nav a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-sub);
      position: relative;
      padding: 6px 0;
    }
    .main-nav a:hover,
    .main-nav a.active {
      color: var(--primary);
    }
    .main-nav a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2.5px;
      background: var(--primary);
      border-radius: 2px;
    }
    .header-action .btn-nav {
      display: inline-flex;
      align-items: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      box-shadow: 0 4px 14px rgba(225, 29, 72, 0.25);
    }
    .header-action .btn-nav:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(225, 29, 72, 0.35);
      color: #fff;
    }
    .mobile-menu-btn {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-menu-btn span {
      width: 24px;
      height: 2.5px;
      background: var(--text-main);
      border-radius: 2px;
    }

    /* 按钮与标签 */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      font-weight: 600;
      font-size: 15px;
      border-radius: var(--radius-sm);
      box-shadow: 0 6px 20px rgba(225, 29, 72, 0.25);
      border: none;
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-primary:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(225, 29, 72, 0.35);
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 26px;
      background: rgba(255, 255, 255, 0.9);
      color: var(--text-main);
      font-weight: 600;
      font-size: 15px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }
    .badge-pill {
      display: inline-flex;
      align-items: center;
      padding: 6px 14px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.5px;
      margin-bottom: 16px;
    }

    /* 通用板块与排版 */
    .section-pad {
      padding: 80px 0;
    }
    .section-pad-sm {
      padding: 55px 0;
    }
    .section-title-wrap {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 48px auto;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-sub);
      line-height: 1.75;
      margin: 0;
    }

    /* 1. 分类专属 H1 标题栏与面包屑 */
    .cat-hero-header {
      background: linear-gradient(135deg, #FFF1F2 0%, #F8FAFC 100%);
      border-bottom: 1px solid var(--border-color);
      padding: 55px 0 50px 0;
    }
    .cat-breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 16px;
    }
    .cat-breadcrumb a {
      color: var(--text-sub);
    }
    .cat-breadcrumb a:hover {
      color: var(--primary);
    }
    .cat-h1-title {
      font-size: 38px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.25;
      letter-spacing: -0.5px;
    }
    .cat-h1-desc {
      font-size: 16px;
      color: var(--text-sub);
      max-width: 840px;
      line-height: 1.8;
      margin: 0;
    }

    /* 2. 属性筛选条 */
    .taxonomy-bar-wrap {
      background: #fff;
      border-bottom: 1px solid var(--border-color);
      padding: 18px 0;
    }
    .taxonomy-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }
    .filter-tags {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
    }
    .filter-tag-item {
      padding: 7px 18px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-sub);
      background: var(--light-bg);
      border: 1px solid var(--border-color);
      transition: var(--transition);
      cursor: pointer;
    }
    .filter-tag-item:hover,
    .filter-tag-item.active {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      box-shadow: 0 4px 12px rgba(225, 29, 72, 0.2);
    }
    .filter-meta {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 3. 分类主体列表 (CMS循环) */
    .cms-grid {
      margin-top: 10px;
    }
    .media-card {
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }
    .media-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(225, 29, 72, 0.3);
    }
    .media-thumb-box {
      position: relative;
      width: 100%;
      padding-top: 56.25%; /* 16:9 播放视窗 */
      background: #0F172A;
      overflow: hidden;
    }
    .media-thumb-img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-thumb-img {
      transform: scale(1.04);
    }
    .media-tag-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 23, 42, 0.78);
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
      backdrop-filter: blur(6px);
    }
    .media-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .media-post-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.45;
      margin-bottom: 12px;
    }
    .media-card:hover .media-post-title {
      color: var(--primary);
    }
    .media-post-excerpt {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 20px;
      flex: 1;
    }
    .media-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .media-read-link {
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .empty-state-card {
      background: var(--light-bg);
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 60px 20px;
      text-align: center;
      color: var(--text-muted);
    }

    /* 4. 热门技术检索词与专题标签云 */
    .topics-cloud-section {
      background: var(--light-bg);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .topic-tags-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      justify-content: center;
    }
    .topic-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fff;
      border: 1px solid var(--border-color);
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      color: var(--text-sub);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .topic-pill span.count {
      color: var(--primary);
      font-size: 12px;
      background: var(--primary-light);
      padding: 2px 7px;
      border-radius: 10px;
    }
    .topic-pill:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    /* 5. 分类场景推荐指南 */
    .practice-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      height: 100%;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .practice-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(225, 29, 72, 0.25);
    }
    .practice-icon-box {
      width: 52px;
      height: 52px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
    }
    .practice-card h4 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .practice-card p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .practice-feature-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .practice-feature-list li {
      font-size: 13px;
      color: var(--text-sub);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .practice-feature-list li::before {
      content: '✓';
      color: var(--primary);
      font-weight: bold;
    }

    /* 6. 技术问答 */
    .faq-accordion-item {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-title-bar {
      padding: 20px 24px;
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      transition: var(--transition);
    }
    .faq-title-bar:hover {
      color: var(--primary);
      background: #FFFBFB;
    }
    .faq-arrow {
      font-size: 14px;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }
    .faq-content-body {
      padding: 0 24px 22px 24px;
      font-size: 15px;
      color: var(--text-sub);
      line-height: 1.75;
      border-top: 1px solid transparent;
    }

    /* 7. 分类专刊与资源咨询 CTA */
    .cta-banner-section {
      background: linear-gradient(135deg, var(--dark-bg) 0%, #1E293B 100%);
      color: #fff;
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      box-shadow: var(--shadow-lg);
      position: relative;
      overflow: hidden;
    }
    .cta-banner-section::after {
      content: '';
      position: absolute;
      right: -80px;
      bottom: -80px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(225, 29, 72, 0.35) 0%, transparent 70%);
      pointer-events: none;
    }
    .cta-title {
      font-size: 32px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .cta-desc {
      font-size: 16px;
      color: #CBD5E1;
      line-height: 1.75;
      margin-bottom: 32px;
      max-width: 680px;
    }
    .cta-form-inline {
      display: flex;
      gap: 12px;
      max-width: 580px;
      flex-wrap: wrap;
    }
    .cta-input {
      flex: 1;
      min-width: 260px;
      height: 50px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--dark-border);
      background: rgba(15, 23, 42, 0.6);
      padding: 0 18px;
      color: #fff;
      font-size: 15px;
      outline: none;
      transition: var(--transition);
    }
    .cta-input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.25);
    }

    /* 页脚 */
    .site-footer {
      background: #0B1120;
      color: #94A3B8;
      padding: 70px 0 30px 0;
      font-size: 14px;
      border-top: 1px solid #1E293B;
    }
    .footer-col {
      margin-bottom: 35px;
    }
    .footer-brand h4 {
      color: #fff;
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
      color: #94A3B8;
    }
    .footer-col h5 {
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 25px;
      margin-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 13px;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .main-nav { gap: 20px; }
      .hero-title, .cat-h1-title { font-size: 32px; }
    }
    @media (max-width: 768px) {
      .mobile-menu-btn { display: flex; }
      .main-nav {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        border-bottom: 1px solid var(--border-color);
        gap: 18px;
        align-items: flex-start;
      }
      .main-nav.show { display: flex; }
      .header-action { display: none; }
      .section-pad { padding: 50px 0; }
      .cat-hero-header { padding: 40px 0 35px 0; }
      .cat-h1-title { font-size: 26px; }
      .section-title { font-size: 24px; }
      .cta-banner-section { padding: 36px 24px; }
      .cta-title { font-size: 24px; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }