/* roulang page: index */
:root {
      --bg-base: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-subtle: #F1F5F9;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --brand-blue: #1E3A8A;
      --brand-sky: #0284C7;
      --brand-sky-light: #E0F2FE;
      --accent-amber: #F59E0B;
      --border-light: #E2E8F0;
      --border-dark: #CBD5E1;
      --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      background-color: var(--bg-base);
      color: var(--text-body);
      font-family: var(--font-stack);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶栏规范导航（政务规范导航风格） */
    .site-header {
      background-color: #1E293B;
      border-bottom: 1px solid #334155;
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-symbol {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, #0284C7, #1E3A8A);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-weight: 800;
      font-size: 20px;
      letter-spacing: -1px;
    }
    .brand-text-block {
      display: flex;
      flex-direction: column;
    }
    .brand-name {
      color: #FFFFFF;
      font-size: 19px;
      font-weight: 700;
      letter-spacing: 0.5px;
      line-height: 1.2;
    }
    .brand-sub {
      color: #94A3B8;
      font-size: 11px;
      letter-spacing: 1px;
    }
    .main-navigation {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-link {
      color: #E2E8F0;
      font-size: 14px;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
      transition: background-color 0.2s, color 0.2s;
    }
    .nav-link:hover {
      background-color: rgba(255, 255, 255, 0.08);
      color: #38BDF8;
    }
    .nav-link.active {
      background-color: #0284C7;
      color: #FFFFFF;
      font-weight: 600;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .nav-search-bar {
      display: flex;
      align-items: center;
      background-color: #0F172A;
      border: 1px solid #334155;
      border-radius: var(--radius-sm);
      padding: 4px 8px;
    }
    .nav-search-bar input {
      background: transparent;
      border: none;
      color: #FFFFFF;
      font-size: 13px;
      padding: 4px 6px;
      width: 140px;
      outline: none;
    }
    .nav-search-bar button {
      background: transparent;
      border: none;
      color: #94A3B8;
      cursor: pointer;
      font-size: 12px;
      padding: 2px 4px;
    }
    .nav-search-bar button:hover { color: #38BDF8; }
    .action-btn-status {
      background: transparent;
      border: 1px solid #475569;
      color: #E2E8F0;
      font-size: 13px;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.2s;
    }
    .action-btn-status:hover {
      border-color: #38BDF8;
      color: #38BDF8;
    }

    /* 板块通用样式 */
    .section-padding {
      padding-top: 86px;
      padding-bottom: 86px;
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 12px;
      position: relative;
      display: inline-block;
    }
    .section-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -6px;
      width: 44px;
      height: 3px;
      background-color: var(--brand-sky);
      border-radius: 2px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 820px;
      line-height: 1.7;
    }

    /* Hero：品牌旗舰店，系列导航条叠在大图上 */
    .hero-storefront {
      position: relative;
      background-color: #0F172A;
      color: #FFFFFF;
      overflow: hidden;
      border-bottom: 1px solid var(--border-light);
    }
    .hero-backdrop {
      position: absolute;
      inset: 0;
      background-image: linear-gradient(to right, rgba(15, 23, 42, 0.94) 30%, rgba(15, 23, 42, 0.65) 100%), url('/assets/images/8178d8912eb5a2db.jpg');
      background-size: cover;
      background-position: center;
      z-index: 1;
    }
    .hero-content-wrap {
      position: relative;
      z-index: 2;
      padding-top: 90px;
      padding-bottom: 140px;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background-color: rgba(2, 132, 199, 0.2);
      border: 1px solid rgba(56, 189, 248, 0.4);
      color: #38BDF8;
      font-size: 13px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 20px;
    }
    .hero-h1 {
      font-size: 40px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
      color: #FFFFFF;
    }
    .hero-lead {
      font-size: 16px;
      color: #CBD5E1;
      line-height: 1.8;
      max-width: 780px;
      margin-bottom: 36px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .btn-primary {
      background-color: var(--brand-sky);
      color: #FFFFFF;
      font-weight: 600;
      font-size: 15px;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
      transition: all 0.2s;
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      background-color: #0369A1;
      transform: translateY(-1px);
    }
    .btn-secondary {
      background-color: rgba(255, 255, 255, 0.1);
      color: #FFFFFF;
      border: 1px solid rgba(255, 255, 255, 0.2);
      font-weight: 500;
      font-size: 15px;
      padding: 12px 24px;
      border-radius: var(--radius-sm);
      transition: all 0.2s;
      display: inline-flex;
      align-items: center;
    }
    .btn-secondary:hover {
      background-color: rgba(255, 255, 255, 0.2);
      border-color: #FFFFFF;
    }

    /* 叠在大图底部的系列快捷导航条 */
    .hero-floating-shelf {
      position: relative;
      z-index: 3;
      margin-top: -65px;
      margin-bottom: 40px;
    }
    .shelf-card {
      background-color: #FFFFFF;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-light);
      padding: 20px 24px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .shelf-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      background-color: var(--bg-subtle);
      transition: all 0.2s;
    }
    .shelf-item:hover {
      background-color: var(--brand-sky-light);
      transform: translateY(-2px);
    }
    .shelf-icon {
      width: 36px;
      height: 36px;
      background-color: #FFFFFF;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-sky);
      font-weight: 700;
      font-size: 14px;
      box-shadow: var(--shadow-sm);
    }
    .shelf-text h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .shelf-text p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块1：首屏指标看板 */
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-md);
      text-align: left;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #BAE6FD;
    }
    .metric-num {
      font-size: 36px;
      font-weight: 800;
      color: var(--brand-blue);
      line-height: 1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .metric-num span {
      font-size: 18px;
      font-weight: 600;
      color: var(--brand-sky);
      margin-left: 2px;
    }
    .metric-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-note {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块2：影视服务矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .matrix-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }
    .matrix-card:hover {
      border-color: var(--brand-sky);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .matrix-tag {
      font-size: 11px;
      font-weight: 700;
      color: var(--brand-sky);
      background-color: var(--brand-sky-light);
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 14px;
    }
    .matrix-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .matrix-desc {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块3：画质与解析对比（左右分栏/表格对比） */
    .compare-container {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-light);
      font-size: 14px;
    }
    .compare-table th {
      background-color: var(--bg-subtle);
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:last-child td { border-bottom: none; }
    .col-highlight {
      background-color: #F0F9FF;
      color: var(--brand-blue);
      font-weight: 600;
    }

    /* 板块4：核心分类入口矩阵 */
    .category-entry-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
    }
    .entry-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    .entry-card:hover {
      border-color: var(--brand-sky);
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .entry-icon-box {
      width: 52px;
      height: 52px;
      background: linear-gradient(135deg, #E0F2FE, #BAE6FD);
      color: var(--brand-blue);
      font-size: 20px;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
    }
    .entry-name {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .entry-sub {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 16px;
    }
    .entry-btn {
      font-size: 12px;
      font-weight: 600;
      color: var(--brand-sky);
      border: 1px solid #BAE6FD;
      padding: 6px 14px;
      border-radius: 20px;
      transition: all 0.2s;
    }
    .entry-card:hover .entry-btn {
      background-color: var(--brand-sky);
      color: #FFFFFF;
      border-color: var(--brand-sky);
    }

    /* 板块5：片库版本里程碑（时间轴） */
    .timeline-wrap {
      position: relative;
      padding-left: 32px;
    }
    .timeline-wrap::before {
      content: '';
      position: absolute;
      left: 7px;
      top: 10px;
      bottom: 10px;
      width: 2px;
      background-color: var(--border-dark);
    }
    .timeline-node {
      position: relative;
      margin-bottom: 36px;
    }
    .timeline-node:last-child { margin-bottom: 0; }
    .timeline-dot {
      position: absolute;
      left: -32px;
      top: 4px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background-color: var(--brand-sky);
      border: 3px solid #FFFFFF;
      box-shadow: 0 0 0 2px var(--brand-sky);
    }
    .timeline-content {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      box-shadow: var(--shadow-sm);
    }
    .timeline-date {
      font-size: 13px;
      font-weight: 700;
      color: var(--brand-sky);
      margin-bottom: 6px;
    }
    .timeline-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .timeline-text {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块6：热播影视前沿资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.2s;
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      border-color: #BAE6FD;
      transform: translateY(-2px);
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .news-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .news-summary {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .news-tag-badge {
      display: inline-block;
      font-size: 11px;
      color: var(--brand-blue);
      background-color: var(--bg-subtle);
      padding: 3px 10px;
      border-radius: var(--radius-sm);
    }

    /* 板块7：平台播控保障承诺 */
    .pledge-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pledge-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-top: 4px solid var(--brand-sky);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
    }
    .pledge-icon-wrap {
      font-size: 24px;
      color: var(--brand-sky);
      margin-bottom: 16px;
      font-weight: 800;
    }
    .pledge-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .pledge-text {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块8：影迷设备快速解答 */
    .device-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .device-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .device-img-wrap {
      height: 160px;
      overflow: hidden;
      background-color: #0F172A;
    }
    .device-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .device-card:hover .device-img-wrap img { transform: scale(1.05); }
    .device-content {
      padding: 20px;
    }
    .device-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .device-text {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块9：视听场景解决方案 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .scene-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .scene-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
    }
    .scene-name {
      font-size: 17px;
      font-weight: 700;
      color: var(--brand-blue);
    }
    .scene-tag {
      font-size: 11px;
      background: #FEF3C7;
      color: #92400E;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .scene-desc {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .scene-specs {
      list-style: none;
      font-size: 12px;
      color: var(--text-muted);
      border-top: 1px dashed var(--border-light);
      padding-top: 12px;
    }
    .scene-specs li {
      margin-bottom: 6px;
      display: flex;
      justify-content: space-between;
    }

    /* 板块10：影迷热议与评分聚合 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: var(--accent-amber);
      font-size: 14px;
      letter-spacing: 2px;
      margin-bottom: 12px;
    }
    .review-quote {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 16px;
      font-style: normal;
    }
    .reviewer-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      border-top: 1px solid var(--border-light);
      padding-top: 12px;
    }
    .reviewer-name {
      font-weight: 700;
      color: var(--text-main);
    }
    .reviewer-device {
      color: var(--brand-sky);
      background-color: var(--brand-sky-light);
      padding: 2px 6px;
      border-radius: 4px;
    }

    /* 板块11：影视版权与安全声明 */
    .compliance-box {
      background: #F1F5F9;
      border: 1px solid var(--border-dark);
      border-left: 4px solid var(--brand-blue);
      border-radius: var(--radius-sm);
      padding: 24px 28px;
    }
    .compliance-box h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--brand-blue);
      margin-bottom: 10px;
    }
    .compliance-box p {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 8px;
    }
    .compliance-box p:last-child { margin-bottom: 0; }

    /* 板块12：高频疑难 FAQ 矩阵 */
    .faq-wrapper {
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    .faq-toggle {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: none;
      border: none;
      outline: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
    }
    .faq-toggle:hover {
      background-color: #F8FAFC;
      color: var(--brand-sky);
    }
    .faq-symbol {
      font-size: 18px;
      font-weight: 400;
      color: var(--brand-sky);
      transition: transform 0.2s ease;
    }
    .faq-answer {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    /* 板块13：影迷服务与反馈表单 */
    .form-panel-wrap {
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      padding: 36px 32px;
    }
    .feedback-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .form-group-full {
      grid-column: span 2;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      background: #F8FAFC;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 10px 14px;
      font-size: 14px;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s;
    }
    .form-control:focus {
      border-color: var(--brand-sky);
      background-color: #FFFFFF;
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }
    .form-submit-btn {
      grid-column: span 2;
      background-color: var(--brand-blue);
      color: #FFFFFF;
      border: none;
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: background-color 0.2s, transform 0.2s;
    }
    .form-submit-btn:hover {
      background-color: #1E40AF;
      transform: translateY(-1px);
    }

    /* 页脚统一规范 */
    .site-footer {
      background-color: #0F172A;
      color: #94A3B8;
      border-top: 1px solid #1E293B;
      padding-top: 60px;
      padding-bottom: 40px;
      font-size: 13px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 48px;
    }
    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-brand p {
      line-height: 1.8;
      max-width: 380px;
    }
    .footer-col h4 {
      color: #E2E8F0;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #38BDF8;
    }
    .footer-bottom-bar {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 移动端与响应式断点 */
    @media (max-width: 1024px) {
      .shelf-card { grid-template-columns: repeat(2, 1fr); }
      .metric-grid { grid-template-columns: repeat(2, 1fr); }
      .matrix-grid { grid-template-columns: repeat(2, 1fr); }
      .category-entry-grid { grid-template-columns: repeat(3, 1fr); }
      .scene-grid, .review-grid, .pledge-grid, .device-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-top-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .header-inner { height: 60px; }
      .main-navigation { display: none; }
      .nav-search-bar { display: none; }
      .hero-h1 { font-size: 28px; }
      .hero-content-wrap { padding-top: 60px; padding-bottom: 100px; }
      .hero-floating-shelf { margin-top: -40px; }
      .shelf-card { grid-template-columns: 1fr; }
      .section-padding { padding-top: 50px; padding-bottom: 50px; }
      .section-title { font-size: 22px; }
      .metric-grid { grid-template-columns: 1fr; }
      .matrix-grid { grid-template-columns: 1fr; }
      .category-entry-grid { grid-template-columns: repeat(2, 1fr); }
      .news-grid { grid-template-columns: 1fr; }
      .scene-grid, .review-grid, .pledge-grid, .device-grid { grid-template-columns: 1fr; }
      .feedback-form { grid-template-columns: 1fr; }
      .form-group-full { grid-column: span 1; }
      .form-submit-btn { grid-column: span 1; }
      .footer-top-grid { grid-template-columns: 1fr; }
    }

/* roulang page: category2 */
:root {
      --bg-base: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-subtle: #F1F5F9;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --brand-blue: #1E3A8A;
      --brand-sky: #0284C7;
      --brand-sky-light: #E0F2FE;
      --accent-amber: #F59E0B;
      --border-light: #E2E8F0;
      --border-dark: #CBD5E1;
      --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      background-color: var(--bg-base);
      color: var(--text-body);
      font-family: var(--font-stack);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      margin: 0;
      padding: 0;
    }
    *, *::before, *::after { box-sizing: border-box; }
    a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶栏规范导航 */
    .site-header {
      background-color: #1E293B;
      border-bottom: 1px solid #334155;
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-symbol {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, #0284C7, #1E3A8A);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-weight: 800;
      font-size: 20px;
      letter-spacing: -1px;
    }
    .brand-text-block {
      display: flex;
      flex-direction: column;
    }
    .brand-name {
      color: #FFFFFF;
      font-size: 19px;
      font-weight: 700;
      letter-spacing: 0.5px;
      line-height: 1.2;
    }
    .brand-sub {
      color: #94A3B8;
      font-size: 11px;
      letter-spacing: 1px;
    }
    .main-navigation {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-link {
      color: #E2E8F0;
      font-size: 14px;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
      transition: background-color 0.2s, color 0.2s;
    }
    .nav-link:hover {
      background-color: rgba(255, 255, 255, 0.08);
      color: #38BDF8;
    }
    .nav-link.active {
      background-color: #0284C7;
      color: #FFFFFF;
      font-weight: 600;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .nav-search-bar {
      display: flex;
      align-items: center;
      background-color: #0F172A;
      border: 1px solid #334155;
      border-radius: var(--radius-sm);
      padding: 4px 8px;
    }
    .nav-search-bar input {
      background: transparent;
      border: none;
      color: #FFFFFF;
      font-size: 13px;
      padding: 4px 6px;
      width: 140px;
      outline: none;
    }
    .nav-search-bar button {
      background: transparent;
      border: none;
      color: #94A3B8;
      cursor: pointer;
      font-size: 12px;
      padding: 2px 4px;
    }
    .nav-search-bar button:hover { color: #38BDF8; }
    .action-btn-status {
      background: transparent;
      border: 1px solid #475569;
      color: #E2E8F0;
      font-size: 13px;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.2s;
    }
    .action-btn-status:hover {
      border-color: #38BDF8;
      color: #38BDF8;
    }

    /* 板块通用间距与标题 */
    .cat-section-padding {
      padding-top: 54px;
      padding-bottom: 54px;
    }
    .section-title-wrap {
      margin-bottom: 32px;
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      border-bottom: 2px solid var(--border-light);
      padding-bottom: 14px;
    }
    .section-title {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      margin: 0;
      position: relative;
    }
    .section-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -16px;
      width: 46px;
      height: 3px;
      background-color: var(--brand-sky);
      border-radius: 2px;
    }
    .section-subtitle {
      font-size: 14px;
      color: var(--text-muted);
      margin: 0;
    }

    /* 板块1：分类专属头部与检索统计 */
    .cat-hero-panel {
      background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
      color: #FFFFFF;
      padding: 46px 0 36px 0;
      border-bottom: 1px solid #334155;
    }
    .cat-breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: #94A3B8;
      margin-bottom: 16px;
    }
    .cat-breadcrumb a:hover { color: #38BDF8; }
    .cat-hero-main {
      display: grid;
      grid-template-columns: 1.5fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .cat-h1 {
      font-size: 32px;
      font-weight: 800;
      color: #FFFFFF;
      margin: 0 0 14px 0;
      line-height: 1.25;
    }
    .cat-h1-badge {
      display: inline-block;
      background-color: rgba(2, 132, 199, 0.25);
      color: #38BDF8;
      border: 1px solid rgba(56, 189, 248, 0.4);
      font-size: 13px;
      font-weight: 600;
      padding: 3px 10px;
      border-radius: 4px;
      margin-right: 12px;
      vertical-align: middle;
    }
    .cat-summary {
      font-size: 14px;
      color: #CBD5E1;
      line-height: 1.7;
      margin: 0;
    }
    .cat-stats-card-group {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 20px;
      border-radius: var(--radius-md);
    }
    .cat-stat-item {
      text-align: center;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    .cat-stat-item:last-child { border-right: none; }
    .cat-stat-num {
      font-size: 26px;
      font-weight: 800;
      color: #38BDF8;
      line-height: 1.2;
    }
    .cat-stat-label {
      font-size: 12px;
      color: #94A3B8;
      margin-top: 6px;
    }

    /* 板块2：多维度片源筛选矩阵 */
    .filter-box {
      background-color: var(--bg-surface);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      padding: 20px 24px;
      margin-top: -24px;
      position: relative;
      z-index: 10;
    }
    .filter-row {
      display: flex;
      align-items: flex-start;
      padding: 10px 0;
      border-bottom: 1px dashed var(--border-light);
      font-size: 13px;
    }
    .filter-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .filter-row:first-child {
      padding-top: 0;
    }
    .filter-label {
      width: 86px;
      font-weight: 700;
      color: var(--text-main);
      padding-top: 4px;
      flex-shrink: 0;
    }
    .filter-items {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 12px;
    }
    .filter-btn {
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      color: var(--text-body);
      background: transparent;
      border: none;
      cursor: pointer;
      transition: all 0.15s;
    }
    .filter-btn:hover {
      color: var(--brand-sky);
      background-color: var(--brand-sky-light);
    }
    .filter-btn.active {
      background-color: var(--brand-blue);
      color: #FFFFFF;
      font-weight: 600;
    }

    /* 板块3：分类影片卡片主体列表 */
    .tv-grid-matrix {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .tv-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    }
    .tv-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--brand-sky);
    }
    .tv-poster-wrap {
      position: relative;
      width: 100%;
      height: 280px;
      overflow: hidden;
      background-color: #0F172A;
    }
    .tv-poster-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .tv-card:hover .tv-poster-wrap img {
      transform: scale(1.04);
    }
    .tv-badge-resolution {
      position: absolute;
      top: 10px;
      left: 10px;
      background-color: rgba(15, 23, 42, 0.85);
      border: 1px solid rgba(56, 189, 248, 0.4);
      color: #38BDF8;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .tv-badge-score {
      position: absolute;
      top: 10px;
      right: 10px;
      background-color: rgba(245, 158, 11, 0.95);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 800;
      padding: 2px 6px;
      border-radius: 4px;
    }
    .tv-badge-episodes {
      position: absolute;
      bottom: 8px;
      right: 10px;
      background: rgba(15, 23, 42, 0.75);
      color: #F1F5F9;
      font-size: 11px;
      padding: 2px 6px;
      border-radius: 4px;
    }
    .tv-content {
      padding: 16px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .tv-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin: 0 0 6px 0;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .tv-meta-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .tv-desc-excerpt {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.5;
      margin: 0 0 14px 0;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex: 1;
    }
    .tv-action-footer {
      border-top: 1px solid var(--border-light);
      padding-top: 12px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .tv-source-status {
      font-size: 12px;
      color: #10B981;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .tv-source-status::before {
      content: '';
      display: inline-block;
      width: 6px;
      height: 6px;
      background-color: #10B981;
      border-radius: 50%;
    }
    .tv-play-btn {
      background-color: var(--brand-sky-light);
      color: var(--brand-sky);
      font-weight: 600;
      font-size: 12px;
      padding: 5px 12px;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      transition: all 0.2s;
    }
    .tv-play-btn:hover {
      background-color: var(--brand-sky);
      color: #FFFFFF;
    }

    /* 列表单一查看更多按钮 */
    .load-more-container {
      text-align: center;
      margin-top: 40px;
    }
    .btn-more-tv {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: var(--bg-surface);
      color: var(--brand-blue);
      border: 1px solid var(--border-dark);
      font-size: 14px;
      font-weight: 600;
      padding: 12px 36px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-sm);
      cursor: pointer;
      transition: all 0.2s;
    }
    .btn-more-tv:hover {
      border-color: var(--brand-sky);
      background-color: var(--brand-sky-light);
      color: var(--brand-sky);
      transform: translateY(-2px);
    }

    /* 板块4：本类热门高分排行榜 */
    .ranking-grid-dual {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .ranking-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      padding: 24px;
    }
    .ranking-header-bar {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      padding-bottom: 14px;
      margin-bottom: 14px;
      border-bottom: 1px solid var(--border-light);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .ranking-header-tag {
      font-size: 12px;
      color: var(--brand-sky);
      font-weight: 500;
    }
    .ranking-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .ranking-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 8px 10px;
      border-radius: var(--radius-sm);
      transition: background-color 0.15s;
    }
    .ranking-item:hover {
      background-color: var(--bg-subtle);
    }
    .rank-num {
      width: 26px;
      height: 26px;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      font-weight: 800;
      color: var(--text-muted);
      background-color: var(--bg-subtle);
      flex-shrink: 0;
    }
    .rank-num.top-1 { background-color: #EF4444; color: #FFFFFF; }
    .rank-num.top-2 { background-color: #F97316; color: #FFFFFF; }
    .rank-num.top-3 { background-color: #F59E0B; color: #FFFFFF; }
    .rank-name-box {
      flex: 1;
      min-width: 0;
    }
    .rank-title {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      margin-bottom: 2px;
    }
    .rank-subtext {
      font-size: 12px;
      color: var(--text-muted);
    }
    .rank-metric {
      font-size: 13px;
      font-weight: 700;
      color: var(--accent-amber);
      flex-shrink: 0;
    }

    /* 板块5：分类专题精选推荐 */
    .topics-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .topic-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      display: flex;
      flex-direction: column;
    }
    .topic-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .topic-cover-wrap {
      position: relative;
      height: 180px;
      overflow: hidden;
      background-color: #0F172A;
    }
    .topic-cover-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .topic-card:hover .topic-cover-wrap img {
      transform: scale(1.05);
    }
    .topic-overlay-tag {
      position: absolute;
      bottom: 12px;
      left: 12px;
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid rgba(56, 189, 248, 0.4);
      color: #38BDF8;
      font-size: 11px;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .topic-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .topic-heading {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin: 0 0 8px 0;
    }
    .topic-text {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0 0 16px 0;
      flex: 1;
    }
    .topic-meta-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-body);
      border-top: 1px solid var(--border-light);
      padding-top: 12px;
    }
    .topic-link-action {
      color: var(--brand-sky);
      font-weight: 600;
    }

    /* 板块6：分类观影技术与码率说明 */
    .tech-specs-card-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .spec-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      padding: 24px 20px;
      transition: all 0.2s;
    }
    .spec-card:hover {
      border-color: var(--brand-sky);
      box-shadow: var(--shadow-md);
    }
    .spec-icon-badge {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background-color: var(--brand-sky-light);
      color: var(--brand-sky);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 18px;
      margin-bottom: 16px;
    }
    .spec-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin: 0 0 8px 0;
    }
    .spec-parameter {
      font-size: 20px;
      font-weight: 800;
      color: var(--brand-blue);
      margin-bottom: 8px;
    }
    .spec-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }

    /* 板块7：该分类常见播放疑问 FAQ */
    .faq-container-styled {
      background-color: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      padding: 24px;
    }
    .faq-item {
      border-bottom: 1px solid var(--border-light);
      padding: 16px 0;
    }
    .faq-item:first-child { padding-top: 0; }
    .faq-item:last-child { border-bottom: none; padding-bottom: 0; }
    .faq-question {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin: 0 0 8px 0;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .faq-q-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      border-radius: 4px;
      background-color: var(--brand-sky);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 800;
      flex-shrink: 0;
    }
    .faq-answer {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      margin: 0;
      padding-left: 32px;
    }

    /* 页脚公共样式 */
    .site-footer {
      background-color: #0F172A;
      color: #CBD5E1;
      padding-top: 64px;
      padding-bottom: 32px;
      border-top: 1px solid #1E293B;
      margin-top: 60px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 20px;
      font-weight: 700;
      margin: 0 0 14px 0;
    }
    .footer-brand p {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.8;
      margin: 0;
      max-width: 380px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 600;
      margin: 0 0 16px 0;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 13px;
      transition: color 0.2s;
    }
    .footer-links a:hover {
      color: #38BDF8;
    }
    .footer-bottom-bar {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      color: #64748B;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .tv-grid-matrix { grid-template-columns: repeat(3, 1fr); }
      .tech-specs-card-grid { grid-template-columns: repeat(2, 1fr); }
      .topics-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-top-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
      .main-navigation { display: none; }
    }
    @media (max-width: 768px) {
      .cat-hero-main { grid-template-columns: 1fr; gap: 24px; }
      .ranking-grid-dual { grid-template-columns: 1fr; }
      .tv-grid-matrix { grid-template-columns: repeat(2, 1fr); gap: 16px; }
      .topics-grid { grid-template-columns: 1fr; }
      .footer-bottom-bar { flex-direction: column; gap: 8px; text-align: center; }
      .cat-stats-card-group { grid-template-columns: 1fr 1fr 1fr; }
      .cat-h1 { font-size: 24px; }
    }
    @media (max-width: 520px) {
      .tv-grid-matrix { grid-template-columns: 1fr; }
      .tech-specs-card-grid { grid-template-columns: 1fr; }
      .cat-stats-card-group { grid-template-columns: 1fr; gap: 12px; }
      .cat-stat-item { border-right: none; border-bottom: 1px solid rgba(255, 255, 255, 0.1); padding-bottom: 10px; }
      .cat-stat-item:last-child { border-bottom: none; }
      .filter-label { width: 100%; margin-bottom: 6px; }
      .filter-row { flex-direction: column; }
    }

/* roulang page: category1 */
:root {
      --bg-base: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-subtle: #F1F5F9;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --brand-blue: #1E3A8A;
      --brand-sky: #0284C7;
      --brand-sky-light: #E0F2FE;
      --accent-amber: #F59E0B;
      --border-light: #E2E8F0;
      --border-dark: #CBD5E1;
      --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      background-color: var(--bg-base);
      color: var(--text-body);
      font-family: var(--font-stack);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶栏规范导航（政务规范导航风格） */
    .site-header {
      background-color: #1E293B;
      border-bottom: 1px solid #334155;
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-symbol {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, #0284C7, #1E3A8A);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-weight: 800;
      font-size: 20px;
      letter-spacing: -1px;
    }
    .brand-text-block {
      display: flex;
      flex-direction: column;
    }
    .brand-name {
      color: #FFFFFF;
      font-size: 19px;
      font-weight: 700;
      letter-spacing: 0.5px;
      line-height: 1.2;
    }
    .brand-sub {
      color: #94A3B8;
      font-size: 11px;
      letter-spacing: 1px;
    }
    .main-navigation {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-link {
      color: #E2E8F0;
      font-size: 14px;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
      transition: background-color 0.2s, color 0.2s;
    }
    .nav-link:hover {
      background-color: rgba(255, 255, 255, 0.08);
      color: #38BDF8;
    }
    .nav-link.active {
      background-color: #0284C7;
      color: #FFFFFF;
      font-weight: 600;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .nav-search-bar {
      display: flex;
      align-items: center;
      background-color: #0F172A;
      border: 1px solid #334155;
      border-radius: var(--radius-sm);
      padding: 4px 8px;
    }
    .nav-search-bar input {
      background: transparent;
      border: none;
      color: #FFFFFF;
      font-size: 13px;
      padding: 4px 6px;
      width: 140px;
      outline: none;
    }
    .nav-search-bar button {
      background: transparent;
      border: none;
      color: #94A3B8;
      cursor: pointer;
      font-size: 12px;
      padding: 2px 4px;
    }
    .nav-search-bar button:hover { color: #38BDF8; }
    .action-btn-status {
      background: transparent;
      border: 1px solid #475569;
      color: #E2E8F0;
      font-size: 13px;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.2s;
    }
    .action-btn-status:hover {
      border-color: #38BDF8;
      color: #38BDF8;
    }

    /* 板块通用间距与标题 */
    .cat-section {
      padding-top: 56px;
      padding-bottom: 56px;
    }
    .cat-section-alt {
      background-color: #FFFFFF;
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .section-head-wrap {
      margin-bottom: 32px;
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
    }
    .section-head-title {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      position: relative;
      padding-left: 14px;
    }
    .section-head-title::before {
      content: '';
      position: absolute;
      left: 0;
      top: 4px;
      bottom: 4px;
      width: 4px;
      background-color: var(--brand-sky);
      border-radius: 2px;
    }
    .section-head-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-top: 6px;
    }

    /* 板块1：分类专属头部与检索统计 */
    .cat-header-panel {
      background: linear-gradient(180deg, #EDF5FF 0%, var(--bg-base) 100%);
      border-bottom: 1px solid var(--border-light);
      padding: 42px 0 36px 0;
    }
    .breadcrumb-nav {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .breadcrumb-nav a:hover {
      color: var(--brand-sky);
    }
    .cat-h1 {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.3px;
    }
    .cat-meta-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 16px 24px;
      box-shadow: var(--shadow-sm);
      margin-top: 20px;
    }
    .cat-stats-group {
      display: flex;
      align-items: center;
      gap: 32px;
      flex-wrap: wrap;
    }
    .cat-stat-item {
      display: flex;
      flex-direction: column;
    }
    .cat-stat-label {
      font-size: 12px;
      color: var(--text-muted);
    }
    .cat-stat-val {
      font-size: 20px;
      font-weight: 700;
      color: var(--brand-blue);
    }
    .cat-stat-val span {
      font-size: 12px;
      font-weight: normal;
      color: var(--text-muted);
      margin-left: 2px;
    }
    .cat-rule-badge {
      font-size: 13px;
      color: var(--text-body);
      background-color: var(--bg-subtle);
      border-left: 3px solid var(--brand-sky);
      padding: 8px 14px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    }

    /* 板块2：多维度片源筛选矩阵 */
    .filter-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .filter-row {
      display: flex;
      align-items: flex-start;
      padding: 10px 0;
      border-bottom: 1px dashed var(--border-light);
    }
    .filter-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .filter-label {
      width: 76px;
      flex-shrink: 0;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      padding-top: 4px;
    }
    .filter-options {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .filter-opt {
      font-size: 13px;
      color: var(--text-body);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.15s;
    }
    .filter-opt:hover {
      color: var(--brand-sky);
      background-color: var(--bg-subtle);
    }
    .filter-opt.active {
      background-color: var(--brand-blue);
      color: #FFFFFF;
      font-weight: 500;
    }

    /* 板块3：分类影片卡片主体列表 (4列) */
    .movie-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .movie-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
      display: flex;
      flex-direction: column;
    }
    .movie-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #93C5FD;
    }
    .poster-wrap {
      position: relative;
      aspect-ratio: 16 / 10;
      background-color: #E2E8F0;
      overflow: hidden;
    }
    .poster-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s;
    }
    .movie-card:hover .poster-img {
      transform: scale(1.04);
    }
    .badge-resolution {
      position: absolute;
      top: 10px;
      left: 10px;
      background: rgba(15, 23, 42, 0.85);
      color: #38BDF8;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .badge-score {
      position: absolute;
      top: 10px;
      right: 10px;
      background: rgba(245, 158, 11, 0.9);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 800;
      padding: 2px 7px;
      border-radius: 4px;
    }
    .movie-info {
      padding: 16px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .movie-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
      line-height: 1.4;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .movie-meta-sub {
      font-size: 12px;
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
      margin-bottom: 10px;
    }
    .movie-tags {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
      margin-top: auto;
      padding-top: 8px;
      border-top: 1px solid var(--bg-subtle);
    }
    .tag-item {
      font-size: 11px;
      background-color: var(--bg-subtle);
      color: var(--text-body);
      padding: 2px 6px;
      border-radius: 4px;
    }
    .view-more-container {
      text-align: center;
      margin-top: 40px;
    }
    .btn-more-movies {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background-color: var(--bg-surface);
      color: var(--brand-blue);
      border: 1px solid var(--border-dark);
      font-size: 14px;
      font-weight: 600;
      padding: 12px 36px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }
    .btn-more-movies:hover {
      background-color: var(--brand-blue);
      color: #FFFFFF;
      border-color: var(--brand-blue);
      box-shadow: var(--shadow-md);
    }

    /* 板块4：本类热门高分排行榜 (双列网格) */
    .ranking-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .ranking-col {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .ranking-list-item {
      display: flex;
      align-items: center;
      padding: 14px 20px;
      border-bottom: 1px solid var(--border-light);
      transition: background-color 0.15s;
    }
    .ranking-list-item:last-child {
      border-bottom: none;
    }
    .ranking-list-item:hover {
      background-color: #F8FAFC;
    }
    .rank-num {
      width: 28px;
      height: 28px;
      border-radius: 4px;
      background-color: var(--bg-subtle);
      color: var(--text-muted);
      font-weight: 800;
      font-size: 13px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: 14px;
      flex-shrink: 0;
    }
    .rank-top1 { background-color: #EF4444; color: #FFFFFF; }
    .rank-top2 { background-color: #F59E0B; color: #FFFFFF; }
    .rank-top3 { background-color: #0284C7; color: #FFFFFF; }
    .rank-details {
      flex-grow: 1;
      min-width: 0;
    }
    .rank-name {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .rank-subtext {
      font-size: 12px;
      color: var(--text-muted);
    }
    .rank-score-pill {
      font-size: 13px;
      font-weight: 700;
      color: var(--accent-amber);
      margin-left: 12px;
    }

    /* 板块5：分类专题精选推荐 (横向卡片) */
    .special-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .special-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .special-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .special-banner {
      height: 140px;
      position: relative;
      background-color: #1E293B;
      overflow: hidden;
    }
    .special-banner img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.85;
    }
    .special-tag {
      position: absolute;
      bottom: 10px;
      left: 12px;
      background: rgba(15, 23, 42, 0.8);
      color: #38BDF8;
      font-size: 11px;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 4px;
    }
    .special-body {
      padding: 18px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .special-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .special-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }
    .special-footer {
      margin-top: auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: var(--brand-sky);
      font-weight: 600;
      border-top: 1px solid var(--bg-subtle);
      padding-top: 10px;
    }

    /* 板块6：分类观影技术与码率说明 */
    .specs-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .spec-box {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 22px 18px;
      text-align: left;
      box-shadow: var(--shadow-sm);
    }
    .spec-header-sub {
      font-size: 12px;
      font-weight: 700;
      color: var(--brand-sky);
      letter-spacing: 0.5px;
      margin-bottom: 6px;
      text-transform: uppercase;
    }
    .spec-value {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .spec-text {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块7：该分类常见播放疑问 FAQ */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      background-color: #FFFFFF;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid transparent;
      transition: all 0.2s;
    }
    .faq-question:hover {
      color: var(--brand-sky);
    }
    .faq-item.active .faq-question {
      border-bottom-color: var(--border-light);
      background-color: var(--bg-subtle);
    }
    .faq-answer {
      padding: 20px 24px;
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.8;
      background-color: #FFFFFF;
    }

    /* 页脚统一样式 */
    .site-footer {
      background-color: #0F172A;
      color: #94A3B8;
      padding-top: 64px;
      padding-bottom: 32px;
      border-top: 1px solid #1E293B;
      margin-top: 64px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.8;
      color: #94A3B8;
      max-width: 360px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      font-size: 13px;
      color: #94A3B8;
      transition: color 0.2s;
    }
    .footer-links a:hover {
      color: #38BDF8;
    }
    .footer-bottom-bar {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .movie-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .special-card-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .specs-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .header-inner {
        height: auto;
        padding-top: 12px;
        padding-bottom: 12px;
        flex-direction: column;
        gap: 12px;
      }
      .main-navigation {
        flex-wrap: wrap;
        justify-content: center;
      }
      .header-actions {
        width: 100%;
        justify-content: center;
      }
      .cat-h1 {
        font-size: 24px;
      }
      .movie-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
      .ranking-grid {
        grid-template-columns: 1fr;
      }
      .special-card-grid {
        grid-template-columns: 1fr;
      }
      .specs-grid {
        grid-template-columns: 1fr;
      }
      .cat-stats-group {
        gap: 16px;
      }
      .cat-meta-bar {
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom-bar {
        flex-direction: column;
        text-align: center;
      }
    }
    @media (max-width: 520px) {
      .movie-grid {
        grid-template-columns: 1fr;
      }
      .filter-row {
        flex-direction: column;
        gap: 6px;
      }
      .filter-label {
        width: 100%;
      }
    }

/* roulang page: category3 */
:root {
    --bg-base: #F8FAFC;
    --bg-surface: #FFFFFF;
    --bg-subtle: #F1F5F9;
    --text-main: #0F172A;
    --text-body: #334155;
    --text-muted: #64748B;
    --brand-blue: #1E3A8A;
    --brand-sky: #0284C7;
    --brand-sky-light: #E0F2FE;
    --accent-amber: #F59E0B;
    --border-light: #E2E8F0;
    --border-dark: #CBD5E1;
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; font-size: 16px; }
  body {
    background-color: var(--bg-base);
    color: var(--text-body);
    font-family: var(--font-stack);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
  img { max-width: 100%; height: auto; display: block; }
  button, input, select, textarea { font-family: inherit; font-size: inherit; }
  .container {
    width: 100%;
    max-width: 1240px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  /* 顶栏规范导航（政务规范导航风格） */
  .site-header {
    background-color: #1E293B;
    border-bottom: 1px solid #334155;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
  }
  .brand-logo-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .brand-symbol {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #0284C7, #1E3A8A);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    font-weight: 800;
    font-size: 20px;
    letter-spacing: -1px;
  }
  .brand-text-block {
    display: flex;
    flex-direction: column;
  }
  .brand-name {
    color: #FFFFFF;
    font-size: 19px;
    font-weight: 700;
    letter-spacing: 0.5px;
    line-height: 1.2;
  }
  .brand-sub {
    color: #94A3B8;
    font-size: 11px;
    letter-spacing: 1px;
  }
  .main-navigation {
    display: flex;
    align-items: center;
    gap: 4px;
  }
  .nav-link {
    color: #E2E8F0;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    display: inline-block;
    transition: background-color 0.2s, color 0.2s;
  }
  .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: #38BDF8;
  }
  .nav-link.active {
    background-color: #0284C7;
    color: #FFFFFF;
    font-weight: 600;
  }
  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .nav-search-bar {
    display: flex;
    align-items: center;
    background-color: #0F172A;
    border: 1px solid #334155;
    border-radius: var(--radius-sm);
    padding: 4px 8px;
  }
  .nav-search-bar input {
    background: transparent;
    border: none;
    color: #FFFFFF;
    font-size: 13px;
    padding: 4px 6px;
    width: 140px;
    outline: none;
  }
  .nav-search-bar button {
    background: transparent;
    border: none;
    color: #94A3B8;
    cursor: pointer;
    font-size: 12px;
    padding: 2px 4px;
  }
  .nav-search-bar button:hover { color: #38BDF8; }
  .action-btn-status {
    background: transparent;
    border: 1px solid #475569;
    color: #E2E8F0;
    font-size: 13px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
  }
  .action-btn-status:hover {
    border-color: #38BDF8;
    color: #38BDF8;
  }

  /* 板块基础间距 */
  .section-block {
    padding-top: 54px;
    padding-bottom: 54px;
  }
  .section-block-alt {
    background-color: #F1F5F9;
    padding-top: 60px;
    padding-bottom: 60px;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
  }
  .block-header {
    margin-bottom: 32px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
  }
  .block-header-left {
    max-width: 720px;
  }
  .block-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
  }
  .block-title::before {
    content: "";
    display: inline-block;
    width: 4px;
    height: 20px;
    background-color: var(--brand-sky);
    border-radius: 2px;
  }
  .block-sub {
    font-size: 14px;
    color: var(--text-muted);
  }

  /* 板块1：分类专属头部与检索统计 */
  .cat-hero-panel {
    background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
    color: #FFFFFF;
    padding: 44px 0 36px;
    border-bottom: 1px solid #334155;
  }
  .cat-hero-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 40px;
    align-items: center;
  }
  .cat-badge-line {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
  }
  .cat-pill {
    background-color: rgba(2, 132, 199, 0.2);
    border: 1px solid rgba(56, 189, 248, 0.4);
    color: #38BDF8;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 12px;
  }
  .cat-status-text {
    font-size: 12px;
    color: #94A3B8;
  }
  .cat-h1 {
    font-size: 32px;
    font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
  }
  .cat-desc {
    font-size: 14px;
    color: #CBD5E1;
    line-height: 1.7;
    margin-bottom: 18px;
  }
  .cat-rules {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
  }
  .cat-rule-item {
    font-size: 13px;
    color: #94A3B8;
    background-color: rgba(255, 255, 255, 0.05);
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }
  .cat-rule-item strong {
    color: #E2E8F0;
  }
  .cat-stat-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .cat-stat-box {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 18px 20px;
  }
  .cat-stat-val {
    font-size: 28px;
    font-weight: 700;
    color: #38BDF8;
    line-height: 1.2;
    margin-bottom: 4px;
  }
  .cat-stat-lbl {
    font-size: 13px;
    color: #94A3B8;
  }

  /* 板块2：多维度片源筛选矩阵 */
  .filter-matrix-wrap {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    box-shadow: var(--shadow-sm);
    margin-top: 24px;
  }
  .filter-row {
    display: flex;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border-light);
  }
  .filter-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .filter-row:first-child {
    padding-top: 0;
  }
  .filter-label {
    width: 80px;
    flex-shrink: 0;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
  }
  .filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    flex-grow: 1;
  }
  .filter-tag {
    font-size: 13px;
    color: var(--text-body);
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
    background-color: transparent;
    border: 1px solid transparent;
    transition: all 0.2s ease;
  }
  .filter-tag:hover {
    color: var(--brand-sky);
    background-color: var(--brand-sky-light);
  }
  .filter-tag.active {
    background-color: var(--brand-sky);
    color: #FFFFFF;
    font-weight: 600;
  }

  /* 板块3：分类影片卡片主体列表 (4列影视海报) */
  .movie-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
  }
  .movie-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  }
  .movie-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: #BAE6FD;
  }
  .movie-cover-wrap {
    position: relative;
    aspect-ratio: 16/9;
    background-color: #0F172A;
    overflow: hidden;
  }
  .movie-cover-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
  }
  .movie-card:hover .movie-cover-wrap img {
    transform: scale(1.04);
  }
  .movie-badge-4k {
    position: absolute;
    top: 8px;
    left: 8px;
    background: rgba(15, 23, 42, 0.85);
    color: #38BDF8;
    border: 1px solid #0284C7;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    letter-spacing: 0.5px;
  }
  .movie-badge-rate {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background-color: rgba(245, 158, 11, 0.95);
    color: #FFFFFF;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
  }
  .movie-info {
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: space-between;
  }
  .movie-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.4;
    margin-bottom: 6px;
  }
  .movie-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
  }
  .movie-tech-specs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    font-size: 11px;
    color: #0369A1;
  }
  .tech-spec-tag {
    background-color: #F0F9FF;
    border: 1px solid #BAE6FD;
    padding: 2px 6px;
    border-radius: 4px;
  }
  .more-btn-row {
    text-align: center;
    margin-top: 36px;
  }
  .btn-load-more {
    background-color: var(--brand-blue);
    color: #FFFFFF;
    border: none;
    padding: 12px 36px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: background-color 0.2s, box-shadow 0.2s;
  }
  .btn-load-more:hover {
    background-color: #172554;
    box-shadow: var(--shadow-md);
  }

  /* 板块4：本类热门高分排行榜 (双列双翼榜单) */
  .rank-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .rank-col-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
  }
  .rank-col-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .rank-col-title span {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 400;
  }
  .rank-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  .rank-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    background-color: #FAFAFA;
    transition: background-color 0.2s ease;
  }
  .rank-item:hover {
    background-color: var(--brand-sky-light);
  }
  .rank-item-left {
    display: flex;
    align-items: center;
    gap: 12px;
    overflow: hidden;
  }
  .rank-index {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    border-radius: 4px;
    background-color: var(--bg-subtle);
    color: var(--text-muted);
    flex-shrink: 0;
  }
  .rank-index.top1 {
    background-color: #EF4444;
    color: #FFFFFF;
  }
  .rank-index.top2 {
    background-color: #F59E0B;
    color: #FFFFFF;
  }
  .rank-index.top3 {
    background-color: #0284C7;
    color: #FFFFFF;
  }
  .rank-title-text {
    font-size: 14px;
    color: var(--text-main);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .rank-item-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
  }
  .rank-tag-code {
    font-size: 11px;
    color: #64748B;
    background-color: #FFFFFF;
    border: 1px solid var(--border-light);
    padding: 2px 6px;
    border-radius: 4px;
  }
  .rank-score {
    font-size: 13px;
    font-weight: 700;
    color: var(--accent-amber);
    min-width: 32px;
    text-align: right;
  }

  /* 板块5：分类专题精选推荐 (横向卡片) */
  .topic-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .topic-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .topic-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
  }
  .topic-thumb {
    height: 150px;
    overflow: hidden;
    background-color: #1E293B;
    position: relative;
  }
  .topic-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .topic-tag {
    position: absolute;
    bottom: 8px;
    left: 10px;
    background-color: rgba(15, 23, 42, 0.85);
    color: #38BDF8;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid rgba(56, 189, 248, 0.3);
  }
  .topic-body {
    padding: 18px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
  .topic-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
  }
  .topic-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 12px;
  }
  .topic-meta-line {
    font-size: 12px;
    color: #0284C7;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border-light);
    padding-top: 10px;
  }

  /* 板块6：分类观影技术与码率说明 (数据指标卡) */
  .tech-spec-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .spec-box {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 22px;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
  }
  .spec-box::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--brand-sky);
  }
  .spec-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 6px;
  }
  .spec-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
  }
  .spec-text {
    font-size: 12px;
    color: var(--text-body);
    line-height: 1.6;
  }

  /* 板块7：该分类常见播放疑问 FAQ */
  .faq-accordion-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 960px;
    margin: 0 auto;
  }
  .faq-item-panel {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
  }
  .faq-summary {
    padding: 16px 20px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    background-color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background-color 0.2s ease;
  }
  .faq-summary:hover {
    background-color: #F8FAFC;
    color: var(--brand-sky);
  }
  .faq-answer {
    padding: 14px 20px 18px;
    font-size: 13px;
    color: var(--text-body);
    line-height: 1.7;
    border-top: 1px solid var(--border-light);
    background-color: #FAFAFA;
  }

  /* 页脚规范样式 */
  .site-footer {
    background-color: #0F172A;
    color: #94A3B8;
    padding-top: 56px;
    padding-bottom: 32px;
    border-top: 1px solid #1E293B;
  }
  .footer-top-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
  }
  .footer-brand h3 {
    color: #FFFFFF;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
  }
  .footer-brand p {
    font-size: 13px;
    line-height: 1.8;
    color: #94A3B8;
    max-width: 380px;
  }
  .footer-col h4 {
    color: #E2E8F0;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 14px;
    position: relative;
    padding-bottom: 6px;
  }
  .footer-col h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background-color: var(--brand-sky);
  }
  .footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .footer-links li a {
    font-size: 13px;
    color: #94A3B8;
    transition: color 0.2s ease;
  }
  .footer-links li a:hover {
    color: #38BDF8;
  }
  .footer-bottom-bar {
    border-top: 1px solid #1E293B;
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: #64748B;
    flex-wrap: wrap;
    gap: 12px;
  }

  /* 响应式断点控制 */
  @media (max-width: 1024px) {
    .movie-grid-4 { grid-template-columns: repeat(3, 1fr); }
    .tech-spec-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-top-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  }
  @media (max-width: 768px) {
    .cat-hero-grid { grid-template-columns: 1fr; gap: 24px; }
    .movie-grid-4 { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .rank-grid-2 { grid-template-columns: 1fr; }
    .topic-grid-3 { grid-template-columns: 1fr; }
    .header-inner { height: auto; padding: 12px 0; flex-wrap: wrap; gap: 12px; }
    .main-navigation { overflow-x: auto; width: 100%; padding-bottom: 6px; }
    .header-actions { width: 100%; justify-content: space-between; }
    .nav-search-bar input { width: 100%; }
    .footer-top-grid { grid-template-columns: 1fr; }
    .footer-bottom-bar { flex-direction: column; align-items: flex-start; }
  }
  @media (max-width: 520px) {
    .movie-grid-4 { grid-template-columns: 1fr; }
    .cat-stat-cards { grid-template-columns: 1fr; }
    .tech-spec-grid { grid-template-columns: 1fr; }
  }

/* roulang page: category4 */
:root {
  --bg-base: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-subtle: #F1F5F9;
  --text-main: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --brand-blue: #1E3A8A;
  --brand-sky: #0284C7;
  --brand-sky-light: #E0F2FE;
  --accent-amber: #F59E0B;
  --border-light: #E2E8F0;
  --border-dark: #CBD5E1;
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background-color: var(--bg-base);
  color: var(--text-body);
  font-family: var(--font-stack);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}
/* 顶栏规范导航（政务规范导航风格） */
.site-header {
  background-color: #1E293B;
  border-bottom: 1px solid #334155;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-symbol {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #0284C7, #1E3A8A);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -1px;
}
.brand-text-block {
  display: flex;
  flex-direction: column;
}
.brand-name {
  color: #FFFFFF;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.2;
}
.brand-sub {
  color: #94A3B8;
  font-size: 11px;
  letter-spacing: 1px;
}
.main-navigation {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  color: #E2E8F0;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  display: inline-block;
  transition: background-color 0.2s, color 0.2s;
}
.nav-link:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: #38BDF8;
}
.nav-link.active {
  background-color: #0284C7;
  color: #FFFFFF;
  font-weight: 600;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-search-bar {
  display: flex;
  align-items: center;
  background-color: #0F172A;
  border: 1px solid #334155;
  border-radius: var(--radius-sm);
  padding: 4px 8px;
}
.nav-search-bar input {
  background: transparent;
  border: none;
  color: #FFFFFF;
  font-size: 13px;
  padding: 4px 6px;
  width: 140px;
  outline: none;
}
.nav-search-bar button {
  background: transparent;
  border: none;
  color: #94A3B8;
  cursor: pointer;
  font-size: 12px;
  padding: 2px 4px;
}
.nav-search-bar button:hover { color: #38BDF8; }
.action-btn-status {
  background: transparent;
  border: 1px solid #475569;
  color: #E2E8F0;
  font-size: 13px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}
.action-btn-status:hover {
  border-color: #38BDF8;
  color: #38BDF8;
}

/* 分类页专属版式样式 */
.category-header-panel {
  background-color: #FFFFFF;
  border-bottom: 1px solid var(--border-light);
  padding: 40px 0 36px;
}
.cat-top-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
}
.cat-title-wrap h1 {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 10px;
}
.cat-title-wrap p {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.6;
}
.cat-stats-group {
  display: flex;
  gap: 24px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  padding: 16px 24px;
  border-radius: var(--radius-md);
}
.cat-stat-item {
  display: flex;
  flex-direction: column;
}
.cat-stat-val {
  font-size: 24px;
  font-weight: 700;
  color: var(--brand-blue);
  line-height: 1.1;
}
.cat-stat-lbl {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* 筛选矩阵 */
.filter-section {
  padding: 32px 0 10px;
}
.filter-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
}
.filter-row {
  display: flex;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border-light);
}
.filter-row:last-child {
  border-bottom: none;
}
.filter-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  width: 72px;
  flex-shrink: 0;
}
.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-tag {
  font-size: 13px;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-body);
  background-color: transparent;
  cursor: pointer;
  transition: all 0.15s;
}
.filter-tag:hover {
  color: var(--brand-sky);
  background-color: var(--brand-sky-light);
}
.filter-tag.active {
  background-color: var(--brand-sky);
  color: #FFFFFF;
  font-weight: 600;
}

/* 影片栅格 */
.video-grid-section {
  padding: 36px 0 60px;
}
.section-headline {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 24px;
}
.section-headline h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}
.section-headline .count-note {
  font-size: 13px;
  color: var(--text-muted);
}
.poster-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.poster-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}
.poster-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #BAE6FD;
}
.poster-thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background-color: #0F172A;
  overflow: hidden;
}
.poster-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.poster-card:hover .poster-thumb-wrap img {
  transform: scale(1.05);
}
.badge-quality {
  position: absolute;
  top: 10px;
  left: 10px;
  background-color: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(4px);
  color: #38BDF8;
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}
.badge-score {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background-color: rgba(245, 158, 11, 0.95);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
}
.poster-info {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.poster-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.poster-meta {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
}
.poster-desc {
  font-size: 12px;
  color: var(--text-body);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: auto;
}
.load-more-wrap {
  text-align: center;
  margin-top: 40px;
}
.btn-more-load {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 36px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-dark);
  color: var(--brand-blue);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
  cursor: pointer;
}
.btn-more-load:hover {
  background-color: var(--brand-blue);
  color: #FFFFFF;
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-md);
}

/* 高分榜板块 */
.ranking-section {
  padding: 40px 0 60px;
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.ranking-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.rank-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
}
.rank-card-head {
  font-size: 16px;
  font-weight: 700;
  color: var(--brand-blue);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
}
.rank-list-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.rank-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  padding: 4px 0;
}
.rank-item-left {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow: hidden;
}
.rank-num {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  background-color: #E2E8F0;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}
.rank-num.top1 { background-color: #EF4444; color: #FFFFFF; }
.rank-num.top2 { background-color: #F97316; color: #FFFFFF; }
.rank-num.top3 { background-color: #F59E0B; color: #FFFFFF; }
.rank-name {
  color: var(--text-main);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rank-score {
  color: var(--accent-amber);
  font-weight: 700;
  margin-left: 12px;
  flex-shrink: 0;
}

/* 专题推荐 */
.topic-section {
  padding: 60px 0;
}
.topic-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.topic-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.topic-tag {
  font-size: 11px;
  font-weight: 700;
  color: var(--brand-sky);
  background-color: var(--brand-sky-light);
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  width: fit-content;
  margin-bottom: 12px;
}
.topic-box h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.topic-box p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}
.topic-meta {
  font-size: 12px;
  color: var(--brand-blue);
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  border-top: 1px dashed var(--border-light);
  padding-top: 12px;
}

/* 播放技术与码率说明 */
.tech-spec-section {
  padding: 60px 0;
  background-color: #FFFFFF;
  border-top: 1px solid var(--border-light);
}
.spec-cards-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 24px;
}
.spec-card {
  border: 1px solid var(--border-light);
  background-color: var(--bg-base);
  border-radius: var(--radius-md);
  padding: 20px;
}
.spec-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.spec-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}
.spec-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--brand-blue);
  margin-top: 12px;
}

/* 分类常见疑问 */
.cat-faq-section {
  padding: 60px 0 80px;
}
.faq-wrap-compact {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 960px;
  margin: 24px auto 0;
}
.faq-box-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
}
.faq-q {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.faq-q::before {
  content: 'Q';
  background-color: var(--brand-sky-light);
  color: var(--brand-sky);
  font-size: 12px;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
}
.faq-a {
  font-size: 13px;
  color: var(--text-body);
  line-height: 1.7;
  padding-left: 24px;
}

/* 页脚样式 */
.site-footer {
  background-color: #0F172A;
  color: #94A3B8;
  padding: 64px 0 24px;
  border-top: 1px solid #1E293B;
  font-size: 13px;
}
.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand h3 {
  color: #FFFFFF;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.footer-brand p {
  line-height: 1.7;
  max-width: 380px;
}
.footer-col h4 {
  color: #F8FAFC;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-links a:hover {
  color: #38BDF8;
}
.footer-bottom-bar {
  border-top: 1px solid #1E293B;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
}

/* 响应式断点 */
@media (max-width: 1024px) {
  .poster-grid-4 { grid-template-columns: repeat(3, 1fr); }
  .spec-cards-4 { grid-template-columns: repeat(2, 1fr); }
  .topic-grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-top-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .header-inner { flex-direction: column; height: auto; padding: 12px 0; gap: 12px; }
  .main-navigation { flex-wrap: wrap; justify-content: center; }
  .header-actions { width: 100%; justify-content: center; }
  .poster-grid-4 { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .ranking-grid { grid-template-columns: 1fr; }
  .topic-grid-3 { grid-template-columns: 1fr; }
  .cat-top-row { flex-direction: column; }
  .cat-stats-group { width: 100%; justify-content: space-around; }
}
@media (max-width: 520px) {
  .poster-grid-4 { grid-template-columns: 1fr; }
  .spec-cards-4 { grid-template-columns: 1fr; }
  .filter-row { flex-direction: column; align-items: flex-start; gap: 8px; }
  .footer-top-grid { grid-template-columns: 1fr; }
  .footer-bottom-bar { flex-direction: column; text-align: center; }
}

/* roulang page: category5 */
:root {
      --bg-base: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-subtle: #F1F5F9;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --brand-blue: #1E3A8A;
      --brand-sky: #0284C7;
      --brand-sky-light: #E0F2FE;
      --accent-amber: #F59E0B;
      --border-light: #E2E8F0;
      --border-dark: #CBD5E1;
      --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-body);
      font-family: var(--font-stack);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select {
      font-family: inherit;
      font-size: inherit;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶栏规范导航（政务规范导航风格） */
    .site-header {
      background-color: #1E293B;
      border-bottom: 1px solid #334155;
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-symbol {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, #0284C7, #1E3A8A);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-weight: 800;
      font-size: 20px;
      letter-spacing: -1px;
    }
    .brand-text-block {
      display: flex;
      flex-direction: column;
    }
    .brand-name {
      color: #FFFFFF;
      font-size: 19px;
      font-weight: 700;
      letter-spacing: 0.5px;
      line-height: 1.2;
    }
    .brand-sub {
      color: #94A3B8;
      font-size: 11px;
      letter-spacing: 1px;
    }
    .main-navigation {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-link {
      color: #E2E8F0;
      font-size: 14px;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
      transition: background-color 0.2s, color 0.2s;
    }
    .nav-link:hover {
      background-color: rgba(255, 255, 255, 0.08);
      color: #38BDF8;
    }
    .nav-link.active {
      background-color: #0284C7;
      color: #FFFFFF;
      font-weight: 600;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .nav-search-bar {
      display: flex;
      align-items: center;
      background-color: #0F172A;
      border: 1px solid #334155;
      border-radius: var(--radius-sm);
      padding: 4px 8px;
    }
    .nav-search-bar input {
      background: transparent;
      border: none;
      color: #FFFFFF;
      font-size: 13px;
      padding: 4px 6px;
      width: 140px;
      outline: none;
    }
    .nav-search-bar button {
      background: transparent;
      border: none;
      color: #94A3B8;
      cursor: pointer;
      font-size: 12px;
      padding: 2px 4px;
    }
    .nav-search-bar button:hover {
      color: #38BDF8;
    }
    .action-btn-status {
      background: transparent;
      border: 1px solid #475569;
      color: #E2E8F0;
      font-size: 13px;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.2s;
    }
    .action-btn-status:hover {
      border-color: #38BDF8;
      color: #38BDF8;
    }

    /* 板块通用间距与标题 */
    .category-section {
      padding-top: 54px;
      padding-bottom: 54px;
    }
    .category-section-alt {
      background-color: #FFFFFF;
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .block-header {
      margin-bottom: 30px;
    }
    .block-title {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      display: inline-block;
      position: relative;
      margin-bottom: 8px;
    }
    .block-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -4px;
      width: 36px;
      height: 3px;
      background-color: var(--brand-sky);
      border-radius: 2px;
    }
    .block-subtitle {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 板块1：分类专属头部与检索统计 */
    .cat-head-panel {
      background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
      border-bottom: 1px solid #E2E8F0;
      padding: 40px 0 32px 0;
    }
    .cat-head-wrap {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      flex-wrap: wrap;
      gap: 24px;
    }
    .cat-head-info {
      max-width: 680px;
    }
    .cat-badge {
      display: inline-flex;
      align-items: center;
      padding: 4px 10px;
      background-color: var(--brand-sky-light);
      color: var(--brand-sky);
      font-size: 12px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }
    .cat-head-h1 {
      font-size: 32px;
      font-weight: 800;
      color: var(--brand-blue);
      line-height: 1.25;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .cat-head-desc {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
    }
    .cat-stats-row {
      display: flex;
      gap: 16px;
    }
    .cat-stat-box {
      background-color: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 14px 20px;
      box-shadow: var(--shadow-sm);
      min-width: 140px;
      text-align: center;
    }
    .cat-stat-num {
      font-size: 26px;
      font-weight: 800;
      color: var(--brand-sky);
      line-height: 1.1;
      margin-bottom: 4px;
    }
    .cat-stat-label {
      font-size: 12px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 板块2：多维度片源筛选矩阵 */
    .filter-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 28px;
      box-shadow: var(--shadow-sm);
      margin-top: -20px;
      position: relative;
      z-index: 10;
    }
    .filter-row {
      display: flex;
      align-items: flex-start;
      padding: 10px 0;
      border-bottom: 1px dashed var(--border-light);
    }
    .filter-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .filter-label {
      width: 72px;
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
      padding-top: 5px;
      flex-shrink: 0;
    }
    .filter-items {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      flex-grow: 1;
    }
    .filter-item {
      font-size: 13px;
      padding: 4px 12px;
      border-radius: 4px;
      color: var(--text-body);
      background-color: transparent;
      transition: all 0.2s ease;
      cursor: pointer;
    }
    .filter-item:hover {
      color: var(--brand-sky);
      background-color: var(--bg-subtle);
    }
    .filter-item.active {
      background-color: var(--brand-blue);
      color: #FFFFFF;
      font-weight: 600;
    }

    /* 板块3：分类影片卡片主体列表 (4列海报卡片) */
    .movie-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-bottom: 36px;
    }
    .movie-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .movie-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: #BAE6FD;
    }
    .movie-poster-wrap {
      position: relative;
      width: 100%;
      height: 220px;
      overflow: hidden;
      background-color: #0F172A;
    }
    .movie-poster-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .movie-card:hover .movie-poster-wrap img {
      transform: scale(1.04);
    }
    .badge-res {
      position: absolute;
      top: 10px;
      left: 10px;
      background-color: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(4px);
      color: #38BDF8;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 7px;
      border-radius: 4px;
      border: 1px solid rgba(56, 189, 248, 0.4);
    }
    .badge-score {
      position: absolute;
      bottom: 10px;
      right: 10px;
      background-color: rgba(245, 158, 11, 0.9);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 800;
      padding: 2px 8px;
      border-radius: 4px;
      box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    }
    .movie-info {
      padding: 16px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .movie-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .movie-meta-tags {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .movie-desc-excerpt {
      font-size: 12px;
      color: var(--text-body);
      line-height: 1.5;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-bottom: 14px;
    }
    .movie-card-btn {
      display: block;
      text-align: center;
      background-color: var(--bg-subtle);
      color: var(--brand-blue);
      font-size: 13px;
      font-weight: 600;
      padding: 7px 0;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
      transition: all 0.2s ease;
    }
    .movie-card-btn:hover {
      background-color: var(--brand-sky);
      color: #FFFFFF;
      border-color: var(--brand-sky);
    }
    .load-more-wrap {
      text-align: center;
      margin-top: 12px;
    }
    .btn-load-more {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background-color: #FFFFFF;
      color: var(--brand-blue);
      border: 1px solid #CBD5E1;
      font-size: 14px;
      font-weight: 600;
      padding: 12px 36px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .btn-load-more:hover {
      background-color: var(--brand-blue);
      color: #FFFFFF;
      border-color: var(--brand-blue);
      box-shadow: var(--shadow-md);
    }

    /* 板块4：本类热门高分排行榜 (双列榜单设计) */
    .ranking-grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .rank-column {
      background-color: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
    }
    .rank-col-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--brand-blue);
      margin-bottom: 16px;
      padding-bottom: 10px;
      border-bottom: 1px solid var(--border-light);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .rank-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .rank-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 12px;
      border-radius: var(--radius-sm);
      transition: background-color 0.2s ease;
    }
    .rank-item:hover {
      background-color: var(--bg-subtle);
    }
    .rank-left {
      display: flex;
      align-items: center;
      gap: 14px;
      overflow: hidden;
    }
    .rank-idx {
      width: 26px;
      height: 26px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 4px;
      font-size: 13px;
      font-weight: 700;
      color: var(--text-muted);
      background-color: var(--bg-subtle);
      flex-shrink: 0;
    }
    .rank-idx.top-1 {
      background-color: #EF4444;
      color: #FFFFFF;
    }
    .rank-idx.top-2 {
      background-color: #F97316;
      color: #FFFFFF;
    }
    .rank-idx.top-3 {
      background-color: #F59E0B;
      color: #FFFFFF;
    }
    .rank-name {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .rank-meta {
      font-size: 12px;
      color: var(--text-muted);
      margin-left: 8px;
    }
    .rank-score {
      font-size: 13px;
      font-weight: 700;
      color: var(--accent-amber);
      flex-shrink: 0;
      margin-left: 12px;
    }

    /* 板块5：分类专题精选推荐 (横向卡片) */
    .topic-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .topic-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .topic-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .topic-banner {
      height: 160px;
      position: relative;
      overflow: hidden;
      background-color: #0F172A;
    }
    .topic-banner img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }
    .topic-card:hover .topic-banner img {
      transform: scale(1.05);
    }
    .topic-tag {
      position: absolute;
      bottom: 10px;
      left: 12px;
      background-color: rgba(30, 58, 138, 0.85);
      color: #FFFFFF;
      font-size: 11px;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 4px;
    }
    .topic-body {
      padding: 18px 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
      justify-content: space-between;
    }
    .topic-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .topic-desc {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 14px;
    }
    .topic-status {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      color: var(--brand-sky);
      font-weight: 600;
      border-top: 1px solid var(--border-light);
      padding-top: 12px;
    }

    /* 板块6：分类观影技术与码率说明 (数据指标卡) */
    .tech-spec-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .spec-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
    }
    .spec-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background-color: var(--brand-sky);
    }
    .spec-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .spec-val {
      font-size: 20px;
      font-weight: 800;
      color: var(--brand-blue);
      margin-bottom: 8px;
    }
    .spec-note {
      font-size: 12px;
      color: var(--text-body);
      line-height: 1.5;
    }

    /* 板块7：该分类常见播放疑问 FAQ (手风琴) */
    .faq-container {
      display: flex;
      flex-direction: column;
      gap: 16px;
      max-width: 980px;
      margin: 0 auto;
    }
    .faq-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 8px;
    }
    .faq-icon {
      color: var(--brand-sky);
      font-size: 18px;
      font-weight: 800;
    }
    .faq-answer {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 页脚设计 */
    .site-footer {
      background-color: #0F172A;
      color: #94A3B8;
      padding-top: 64px;
      padding-bottom: 36px;
      border-top: 1px solid #1E293B;
      font-size: 13px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h3 {
      font-size: 22px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
    }
    .footer-brand p {
      line-height: 1.8;
      max-width: 440px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #F1F5F9;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      color: #94A3B8;
      transition: color 0.2s ease;
    }
    .footer-links a:hover {
      color: #38BDF8;
    }
    .footer-bottom-bar {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12px;
      color: #64748B;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .movie-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .ranking-grid-2 {
        grid-template-columns: 1fr;
      }
      .tech-spec-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .header-inner {
        flex-direction: column;
        height: auto;
        padding: 14px 0;
        gap: 12px;
      }
      .main-navigation {
        flex-wrap: wrap;
        justify-content: center;
      }
      .header-actions {
        width: 100%;
        justify-content: center;
      }
      .topic-grid-3 {
        grid-template-columns: 1fr;
      }
      .cat-head-wrap {
        flex-direction: column;
        align-items: flex-start;
      }
      .cat-stats-row {
        width: 100%;
      }
      .cat-stat-box {
        flex: 1;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 520px) {
      .movie-grid-4 {
        grid-template-columns: 1fr;
      }
      .tech-spec-grid {
        grid-template-columns: 1fr;
      }
      .cat-stats-row {
        flex-direction: column;
      }
    }