/* roulang page: index */
:root {
      --bg-base: #070b14;
      --bg-surface: #0d1527;
      --bg-card: rgba(19, 31, 56, 0.72);
      --border-card: rgba(255, 255, 255, 0.08);
      --glow-pink: #ff2a6d;
      --glow-cyan: #05d9e8;
      --gradient-accent: linear-gradient(135deg, #ff2a6d 0%, #ff5e3a 100%);
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --text-light: #cbd5e1;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-pink: 0 0 24px rgba(255, 42, 109, 0.4);
      --shadow-cyan: 0 0 20px rgba(5, 217, 232, 0.3);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 (双 CTA) */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(7, 11, 20, 0.82);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border-card);
      height: 74px;
      display: flex;
      align-items: center;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: #fff;
    }
    .brand-icon {
      width: 32px;
      height: 32px;
      background: var(--gradient-accent);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 14px rgba(255, 42, 109, 0.6);
    }
    .brand-icon svg {
      width: 18px;
      height: 18px;
      fill: #fff;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-item a {
      font-size: 15px;
      color: var(--text-light);
      font-weight: 500;
    }
    .nav-item a:hover, .nav-item.active a {
      color: var(--glow-cyan);
      text-shadow: 0 0 10px rgba(5, 217, 232, 0.5);
    }
    .header-cta-group {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-secondary {
      background: rgba(13, 21, 39, 0.8);
      border-color: rgba(5, 217, 232, 0.5);
      color: var(--glow-cyan);
    }
    .btn-secondary:hover {
      background: rgba(5, 217, 232, 0.15);
      box-shadow: var(--shadow-cyan);
      border-color: var(--glow-cyan);
    }
    .btn-primary {
      background: var(--gradient-accent);
      color: #fff;
      box-shadow: var(--shadow-pink);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 30px rgba(255, 42, 109, 0.7);
    }

    /* 板块通用 */
    .section-block {
      padding: 80px 0;
      position: relative;
    }
    .section-alt {
      background: linear-gradient(180deg, rgba(13, 21, 39, 0.4) 0%, rgba(7, 11, 20, 0.8) 100%);
    }
    .section-header {
      margin-bottom: 48px;
      max-width: 800px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--glow-pink);
      background: rgba(255, 42, 109, 0.12);
      border: 1px solid rgba(255, 42, 109, 0.3);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: #fff;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: var(--transition);
    }
    .glass-card:hover {
      border-color: rgba(5, 217, 232, 0.35);
      transform: translateY(-4px);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    }

    /* 板块 1: Hero 首屏与指标看板 */
    .hero-section {
      position: relative;
      min-height: 840px;
      display: flex;
      align-items: center;
      padding: 90px 0 70px;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      background-image: linear-gradient(180deg, rgba(7, 11, 20, 0.75) 0%, rgba(7, 11, 20, 0.94) 85%, #070b14 100%), url('/assets/images/ac47a3ba78c2f7ed.jpg');
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 46px;
      line-height: 1.25;
      font-weight: 800;
      color: #fff;
      margin-bottom: 22px;
    }
    .hero-content h1 span {
      background: var(--gradient-accent);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-light);
      margin-bottom: 32px;
    }
    .hero-action-row {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .metrics-board {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }
    .metric-item {
      background: rgba(13, 21, 39, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 22px;
      border-left: 3px solid var(--glow-cyan);
    }
    .metric-value {
      font-size: 34px;
      font-weight: 800;
      color: #fff;
      font-family: monospace;
      margin-bottom: 4px;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }
    .metric-value small {
      font-size: 15px;
      color: var(--glow-pink);
    }
    .metric-label {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块 2: 服务矩阵板块 (4列) */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(5, 217, 232, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      border: 1px solid rgba(5, 217, 232, 0.3);
    }
    .service-icon-box svg {
      width: 24px;
      height: 24px;
      fill: var(--glow-cyan);
    }
    .service-name {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 10px;
      color: #fff;
    }
    .service-detail {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 3: 结果对比板块 (参数化双栏表格) */
    .compare-wrapper {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-lg);
      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 rgba(255, 255, 255, 0.05);
      font-size: 15px;
    }
    .compare-table th {
      background: rgba(7, 11, 20, 0.7);
      color: var(--text-muted);
      font-weight: 600;
      font-size: 14px;
      text-transform: uppercase;
    }
    .compare-table th.highlight-col {
      color: var(--glow-pink);
      background: rgba(255, 42, 109, 0.08);
      font-size: 16px;
    }
    .compare-table td.highlight-col {
      background: rgba(255, 42, 109, 0.04);
      color: #fff;
      font-weight: 600;
    }
    .compare-tag-ok {
      color: var(--glow-cyan);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .compare-tag-bad {
      color: #64748b;
    }

    /* 板块 4: 里程碑架构历程 */
    .timeline-stream {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .timeline-node {
      position: relative;
      padding-top: 24px;
    }
    .timeline-node::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--glow-pink), var(--glow-cyan));
    }
    .timeline-date {
      font-size: 13px;
      font-weight: 700;
      color: var(--glow-cyan);
      margin-bottom: 8px;
    }
    .timeline-title {
      font-size: 17px;
      color: #fff;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .timeline-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 5: 核心片库分类专属入口 (5列徽章直达) */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 18px;
    }
    .category-badge-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 22px 18px;
      text-align: center;
      transition: var(--transition);
      display: block;
    }
    .category-badge-card:hover {
      border-color: var(--glow-pink);
      transform: translateY(-5px);
      box-shadow: 0 0 20px rgba(255, 42, 109, 0.35);
    }
    .category-icon {
      font-size: 24px;
      margin-bottom: 10px;
      display: inline-block;
    }
    .category-card-name {
      font-size: 17px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
    }
    .category-card-desc {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.4;
    }

    /* 板块 6: 专属放映专题流 (4列海报) */
    .poster-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .poster-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-card);
      transition: var(--transition);
      position: relative;
    }
    .poster-card:hover {
      transform: translateY(-6px);
      border-color: var(--glow-cyan);
    }
    .poster-thumb {
      position: relative;
      aspect-ratio: 16/9;
      overflow: hidden;
      background: #000;
    }
    .poster-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .poster-card:hover .poster-thumb img {
      transform: scale(1.06);
    }
    .poster-pill {
      position: absolute;
      top: 10px;
      right: 10px;
      background: rgba(7, 11, 20, 0.85);
      border: 1px solid rgba(5, 217, 232, 0.5);
      color: var(--glow-cyan);
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
    }
    .poster-info {
      padding: 18px;
    }
    .poster-title {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .poster-meta {
      font-size: 13px;
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
    }

    /* 板块 7: 平台保障与链路安全 (3列) */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .security-card {
      background: rgba(13, 21, 39, 0.6);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 30px;
    }
    .security-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .security-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 8: 影视技术资讯列表区 (左大图 + 右列表) */
    .news-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .news-featured {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-featured-img {
      aspect-ratio: 16/9;
      overflow: hidden;
    }
    .news-featured-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-featured-body {
      padding: 24px;
      flex: 1;
    }
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .news-item {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-sm);
      padding: 18px;
      transition: var(--transition);
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .news-item:hover {
      border-color: rgba(5, 217, 232, 0.4);
      transform: translateX(4px);
    }
    .news-item-time {
      font-size: 12px;
      color: var(--glow-cyan);
      font-family: monospace;
      white-space: nowrap;
    }
    .news-item-title {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      line-height: 1.4;
    }

    /* 板块 9: 场景化播放解决方案 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 28px;
      border-top: 3px solid var(--glow-pink);
    }
    .scenario-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }
    .scenario-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 10: 快速接入解答微矩阵 (4宫格) */
    .quick-faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .quick-faq-item {
      background: rgba(19, 31, 56, 0.5);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 24px;
    }
    .quick-faq-item h4 {
      font-size: 16px;
      color: var(--glow-cyan);
      margin-bottom: 8px;
      font-weight: 700;
    }
    .quick-faq-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 11: FAQ 折叠面板组件 */
    .accordion-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .accordion-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-sm);
      overflow: hidden;
    }
    .accordion-header {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      background: transparent;
      border: none;
      color: #fff;
      font-size: 16px;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .accordion-header span.icon-toggle {
      color: var(--glow-pink);
      font-size: 20px;
      line-height: 1;
    }
    .accordion-body {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 12: 转化驱动与自检测速表单 */
    .conversion-box {
      background: radial-gradient(circle at 50% 50%, rgba(255, 42, 109, 0.12) 0%, rgba(13, 21, 39, 0.95) 70%);
      border: 1px solid rgba(255, 42, 109, 0.3);
      border-radius: var(--radius-lg);
      padding: 48px;
      text-align: center;
      box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
    }
    .conversion-box h2 {
      font-size: 32px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 16px;
    }
    .conversion-box p {
      font-size: 16px;
      color: var(--text-light);
      max-width: 680px;
      margin: 0 auto 32px;
    }
    .speed-test-form {
      max-width: 640px;
      margin: 0 auto 28px;
      display: flex;
      gap: 12px;
    }
    .speed-input {
      flex: 1;
      background: rgba(7, 11, 20, 0.85);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      padding: 14px 18px;
      color: #fff;
      font-size: 14px;
      outline: none;
    }
    .speed-input:focus {
      border-color: var(--glow-cyan);
      box-shadow: 0 0 10px rgba(5, 217, 232, 0.4);
    }
    .download-direct-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* 统一页脚 */
    .site-footer {
      background: #04070d;
      border-top: 1px solid var(--border-card);
      padding: 60px 0 30px;
      color: var(--text-muted);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr repeat(3, 1fr);
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand-desc {
      margin-top: 14px;
      line-height: 1.7;
      font-size: 13px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--glow-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* 响应式样式 */
    @media (max-width: 1024px) {
      .service-grid, .poster-grid, .timeline-stream {
        grid-template-columns: repeat(2, 1fr);
      }
      .category-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .news-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .nav-menu {
        display: none;
      }
      .security-grid, .scenario-grid, .quick-faq-grid {
        grid-template-columns: 1fr;
      }
      .service-grid, .poster-grid, .timeline-stream {
        grid-template-columns: 1fr;
      }
      .category-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .speed-test-form {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }
    @media (max-width: 520px) {
      .category-grid {
        grid-template-columns: 1fr;
      }
      .metrics-board {
        grid-template-columns: 1fr;
      }
      .header-cta-group .btn-secondary {
        display: none;
      }
    }

/* roulang page: category2 */
:root {
  --bg-base: #070b14;
  --bg-surface: #0d1527;
  --bg-card: rgba(19, 31, 56, 0.72);
  --border-card: rgba(255, 255, 255, 0.08);
  --glow-pink: #ff2a6d;
  --glow-cyan: #05d9e8;
  --gradient-accent: linear-gradient(135deg, #ff2a6d 0%, #ff5e3a 100%);
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-light: #cbd5e1;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-pink: 0 0 24px rgba(255, 42, 109, 0.4);
  --shadow-cyan: 0 0 20px rgba(5, 217, 232, 0.3);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 顶部导航 (双 CTA) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 11, 20, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-card);
  height: 74px;
  display: flex;
  align-items: center;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #fff;
}
.brand-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 14px rgba(255, 42, 109, 0.6);
}
.brand-icon svg {
  width: 18px;
  height: 18px;
  fill: #fff;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-item a {
  font-size: 15px;
  color: var(--text-light);
  font-weight: 500;
}
.nav-item a:hover, .nav-item.active a {
  color: var(--glow-cyan);
  text-shadow: 0 0 10px rgba(5, 217, 232, 0.5);
}
.header-cta-group {
  display: flex;
  align-items: center;
  gap: 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-secondary {
  background: rgba(13, 21, 39, 0.8);
  border-color: rgba(5, 217, 232, 0.5);
  color: var(--glow-cyan);
}
.btn-secondary:hover {
  background: rgba(5, 217, 232, 0.15);
  box-shadow: var(--shadow-cyan);
  border-color: var(--glow-cyan);
}
.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: var(--shadow-pink);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(255, 42, 109, 0.7);
}

/* 分类页板块通用 */
.cat-section {
  padding: 56px 0;
  position: relative;
}
.cat-section-alt {
  background: linear-gradient(180deg, rgba(13, 21, 39, 0.5) 0%, rgba(7, 11, 20, 0.85) 100%);
}
.cat-heading {
  margin-bottom: 32px;
}
.cat-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--glow-pink);
  background: rgba(255, 42, 109, 0.12);
  border: 1px solid rgba(255, 42, 109, 0.3);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.cat-title {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 10px;
}
.cat-desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 820px;
  line-height: 1.7;
}

/* 玻璃拟态卡片 */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}
.glass-panel:hover {
  border-color: rgba(5, 217, 232, 0.35);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

/* 板块 1: 分类专属导视区 */
.filter-nav-hero {
  padding: 40px 0 28px;
  border-bottom: 1px solid var(--border-card);
  background: radial-gradient(circle at 15% 30%, rgba(255, 42, 109, 0.08) 0%, transparent 60%),
              radial-gradient(circle at 85% 70%, rgba(5, 217, 232, 0.06) 0%, transparent 50%);
}
.filter-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 20px;
}
.filter-h1 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}
.filter-h1 span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.filter-summary {
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  gap: 16px;
}
.filter-summary span b {
  color: var(--glow-cyan);
  font-weight: 700;
}
.filter-bar-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: rgba(13, 21, 39, 0.6);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}
.filter-row {
  display: flex;
  align-items: center;
  font-size: 14px;
}
.filter-label {
  width: 72px;
  color: var(--text-muted);
  flex-shrink: 0;
  font-weight: 600;
}
.filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-pill {
  padding: 5px 14px;
  border-radius: 6px;
  color: var(--text-light);
  cursor: pointer;
  transition: var(--transition);
  font-size: 13px;
}
.filter-pill:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.filter-pill.active {
  background: var(--gradient-accent);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 0 12px rgba(255, 42, 109, 0.4);
}

/* 板块 2: 分类影视卡片主体瀑布流 (5 列) */
.series-waterfall-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.series-card {
  position: relative;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  overflow: hidden;
  border: 1px solid var(--border-card);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.series-card:hover {
  transform: translateY(-6px) scale(1.01);
  border-color: rgba(5, 217, 232, 0.4);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.6);
}
.series-poster-box {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 3;
  overflow: hidden;
  background: #111a30;
}
.series-poster-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.series-card:hover .series-poster-box img {
  transform: scale(1.06);
}
.series-badge-res {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(7, 11, 20, 0.85);
  border: 1px solid var(--glow-cyan);
  color: var(--glow-cyan);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  backdrop-filter: blur(8px);
}
.series-badge-score {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--gradient-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
  box-shadow: 0 0 10px rgba(255, 42, 109, 0.5);
}
.series-overlay-status {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 18px 10px 6px;
  background: linear-gradient(180deg, transparent 0%, rgba(7, 11, 20, 0.95) 100%);
  font-size: 12px;
  color: #38bdf8;
  font-weight: 600;
}
.series-body {
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.series-name {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 6px;
}
.series-meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}
.series-tag-genre {
  color: var(--text-light);
}
.series-load-more {
  text-align: center;
  margin-top: 40px;
}

/* 板块 3: 分类热播热度榜单 (3 栏) */
.ranking-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.rank-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}
.rank-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: 14px;
}
.rank-card-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}
.rank-icon-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--glow-pink);
  box-shadow: 0 0 8px var(--glow-pink);
}
.rank-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.rank-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.04);
}
.rank-left {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow: hidden;
}
.rank-num {
  font-size: 14px;
  font-weight: 800;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  flex-shrink: 0;
}
.rank-num.top1 {
  background: #ff2a6d;
  color: #fff;
  box-shadow: 0 0 10px rgba(255, 42, 109, 0.5);
}
.rank-num.top2 {
  background: #ff5e3a;
  color: #fff;
}
.rank-num.top3 {
  background: #05d9e8;
  color: #070b14;
}
.rank-title {
  font-size: 14px;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rank-heat {
  font-size: 12px;
  color: var(--glow-cyan);
  font-family: monospace;
  font-weight: 600;
  flex-shrink: 0;
}

/* 板块 4: 音画解码与播放支持规范 (4 列卡片) */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.spec-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  border-top: 3px solid var(--glow-cyan);
  transition: var(--transition);
}
.spec-card:hover {
  transform: translateY(-4px);
  border-color: var(--glow-cyan);
  box-shadow: var(--shadow-cyan);
}
.spec-code {
  font-size: 12px;
  color: var(--glow-pink);
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.spec-name {
  font-size: 18px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 10px;
}
.spec-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 板块 5: 分类专属观影与选片指南 (左右图文分栏) */
.guide-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.guide-image-box {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-card);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
  position: relative;
}
.guide-image-box img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}
.guide-image-tag {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(7, 11, 20, 0.85);
  border: 1px solid rgba(5, 217, 232, 0.4);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--glow-cyan);
  backdrop-filter: blur(10px);
}
.guide-content-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.guide-point-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  display: flex;
  gap: 16px;
}
.guide-point-icon {
  width: 40px;
  height: 40px;
  background: rgba(5, 217, 232, 0.1);
  border: 1px solid rgba(5, 217, 232, 0.3);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--glow-cyan);
  flex-shrink: 0;
  font-weight: 800;
  font-size: 15px;
}
.guide-point-info h4 {
  font-size: 16px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 6px;
}
.guide-point-info p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 板块 6: 分类高频体验解答与求片建议 (3 列卡片) */
.qa-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.qa-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  border-left: 3px solid var(--glow-pink);
}
.qa-card h4 {
  font-size: 16px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.qa-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 板块 7: 跨端同步与下载引导条 (轻量通栏 Banner) */
.sync-banner {
  padding: 40px 0;
  background: radial-gradient(circle at 50% 50%, rgba(255, 42, 109, 0.12) 0%, rgba(7, 11, 20, 0.95) 80%);
  border-top: 1px solid var(--border-card);
  border-bottom: 1px solid var(--border-card);
}
.sync-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}
.sync-left {
  max-width: 680px;
}
.sync-left h3 {
  font-size: 22px;
  color: #fff;
  font-weight: 800;
  margin-bottom: 8px;
}
.sync-left p {
  font-size: 14px;
  color: var(--text-light);
}
.sync-buttons {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* 页脚 */
.site-footer {
  background: #04070d;
  border-top: 1px solid var(--border-card);
  padding: 60px 0 30px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 360px;
  margin-top: 12px;
}
.footer-col h5 {
  font-size: 16px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
}
.footer-links a:hover {
  color: var(--glow-cyan);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #64748b;
  flex-wrap: wrap;
  gap: 12px;
}

/* 响应式调整 */
@media (max-width: 1200px) {
  .series-waterfall-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .specs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 992px) {
  .nav-menu {
    gap: 14px;
  }
  .series-waterfall-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .ranking-grid {
    grid-template-columns: 1fr;
  }
  .guide-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .site-header {
    height: auto;
    padding: 14px 0;
  }
  .header-inner {
    flex-direction: column;
    gap: 14px;
  }
  .nav-menu {
    flex-wrap: wrap;
    justify-content: center;
  }
  .series-waterfall-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .specs-grid, .qa-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .sync-banner-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 480px) {
  .series-waterfall-grid {
    grid-template-columns: 1fr;
  }
}

/* roulang page: category1 */
:root {
            --bg-base: #070b14;
            --bg-surface: #0d1527;
            --bg-card: rgba(19, 31, 56, 0.72);
            --border-card: rgba(255, 255, 255, 0.08);
            --glow-pink: #ff2a6d;
            --glow-cyan: #05d9e8;
            --gradient-accent: linear-gradient(135deg, #ff2a6d 0%, #ff5e3a 100%);
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --text-light: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-pink: 0 0 24px rgba(255, 42, 109, 0.4);
            --shadow-cyan: 0 0 20px rgba(5, 217, 232, 0.3);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 11, 20, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-card);
            height: 74px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: #fff;
        }
        .brand-icon {
            width: 32px;
            height: 32px;
            background: var(--gradient-accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 14px rgba(255, 42, 109, 0.6);
        }
        .brand-icon svg {
            width: 18px;
            height: 18px;
            fill: #fff;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-item a {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
        }
        .nav-item a:hover, .nav-item.active a {
            color: var(--glow-cyan);
            text-shadow: 0 0 10px rgba(5, 217, 232, 0.5);
        }
        .header-cta-group {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            border: 1px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-secondary {
            background: rgba(13, 21, 39, 0.8);
            border-color: rgba(5, 217, 232, 0.5);
            color: var(--glow-cyan);
        }
        .btn-secondary:hover {
            background: rgba(5, 217, 232, 0.15);
            box-shadow: var(--shadow-cyan);
            border-color: var(--glow-cyan);
        }
        .btn-primary {
            background: var(--gradient-accent);
            color: #fff;
            box-shadow: var(--shadow-pink);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(255, 42, 109, 0.7);
        }
        .section-block {
            padding: 64px 0;
            position: relative;
        }
        .section-alt {
            background: linear-gradient(180deg, rgba(13, 21, 39, 0.45) 0%, rgba(7, 11, 20, 0.85) 100%);
        }
        .section-header {
            margin-bottom: 36px;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--glow-pink);
            background: rgba(255, 42, 109, 0.12);
            border: 1px solid rgba(255, 42, 109, 0.3);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }
        .glass-card:hover {
            border-color: rgba(5, 217, 232, 0.35);
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
        }

        /* 板块 1: 分类专属导视区 */
        .category-hero {
            padding: 40px 0 28px;
            border-bottom: 1px solid var(--border-card);
            background: radial-gradient(circle at 15% 30%, rgba(255, 42, 109, 0.08) 0%, transparent 60%);
        }
        .category-header-top {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 28px;
            flex-wrap: wrap;
            gap: 20px;
        }
        .category-h1 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            line-height: 1.25;
        }
        .category-h1 span {
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .category-meta-stat {
            display: flex;
            gap: 20px;
            background: rgba(13, 21, 39, 0.6);
            border: 1px solid var(--border-card);
            padding: 10px 18px;
            border-radius: var(--radius-sm);
        }
        .stat-item-badge {
            font-size: 13px;
            color: var(--text-muted);
        }
        .stat-item-badge strong {
            color: var(--glow-cyan);
            font-size: 15px;
            margin-left: 4px;
        }
        .filter-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .filter-row {
            display: flex;
            align-items: center;
            font-size: 14px;
            flex-wrap: wrap;
            gap: 10px;
        }
        .filter-label {
            color: var(--text-muted);
            min-width: 60px;
            font-weight: 600;
        }
        .filter-options {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .filter-tag {
            padding: 4px 14px;
            border-radius: 6px;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid transparent;
        }
        .filter-tag:hover, .filter-tag.active {
            background: rgba(5, 217, 232, 0.12);
            color: var(--glow-cyan);
            border-color: rgba(5, 217, 232, 0.4);
        }
        .filter-tag.primary {
            background: rgba(255, 42, 109, 0.15);
            color: var(--glow-pink);
            border-color: rgba(255, 42, 109, 0.5);
        }

        /* 板块 2: 分类影视卡片主体瀑布流 (5 列) */
        .movie-stream-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-top: 24px;
        }
        .movie-poster-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .movie-poster-card:hover {
            transform: translateY(-6px) scale(1.02);
            border-color: rgba(255, 42, 109, 0.4);
            box-shadow: 0 14px 30px rgba(0, 0, 0, 0.6);
        }
        .poster-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 2/3;
            overflow: hidden;
            background: #111a2e;
        }
        .poster-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .movie-poster-card:hover .poster-wrap img {
            transform: scale(1.08);
        }
        .badge-capsule {
            position: absolute;
            top: 10px;
            left: 10px;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 700;
            background: rgba(7, 11, 20, 0.85);
            color: var(--glow-cyan);
            border: 1px solid rgba(5, 217, 232, 0.4);
            backdrop-filter: blur(8px);
        }
        .rate-capsule {
            position: absolute;
            top: 10px;
            right: 10px;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 700;
            background: rgba(255, 42, 109, 0.88);
            color: #fff;
            box-shadow: 0 2px 8px rgba(255, 42, 109, 0.4);
        }
        .poster-gradient {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 45%;
            background: linear-gradient(180deg, transparent 0%, rgba(7, 11, 20, 0.95) 100%);
            display: flex;
            align-items: flex-end;
            padding: 10px 12px;
        }
        .poster-spec {
            font-size: 12px;
            color: var(--text-light);
            font-weight: 500;
        }
        .movie-details {
            padding: 14px 14px 16px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .movie-name {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .movie-name:hover {
            color: var(--glow-cyan);
        }
        .movie-meta-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: var(--text-muted);
        }
        .pagination-container {
            margin-top: 40px;
            text-align: center;
        }
        .load-more-btn {
            background: rgba(13, 21, 39, 0.9);
            border: 1px solid rgba(5, 217, 232, 0.4);
            color: var(--glow-cyan);
            padding: 12px 36px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }
        .load-more-btn:hover {
            background: rgba(5, 217, 232, 0.15);
            box-shadow: var(--shadow-cyan);
        }

        /* 板块 3: 分类热播热度榜单 (3 栏) */
        .rank-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .rank-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        .rank-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-card);
        }
        .rank-card-title {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .rank-card-title::before {
            content: '';
            width: 4px;
            height: 16px;
            background: var(--glow-pink);
            border-radius: 2px;
        }
        .rank-tag-period {
            font-size: 12px;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.05);
            padding: 2px 8px;
            border-radius: 4px;
        }
        .rank-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 6px 0;
            transition: var(--transition);
        }
        .rank-num {
            width: 24px;
            height: 24px;
            border-radius: 4px;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--text-muted);
        }
        .rank-item:nth-child(1) .rank-num {
            background: #ff2a6d;
            color: #fff;
            box-shadow: 0 0 10px rgba(255, 42, 109, 0.5);
        }
        .rank-item:nth-child(2) .rank-num {
            background: #ff5e3a;
            color: #fff;
        }
        .rank-item:nth-child(3) .rank-num {
            background: #05d9e8;
            color: #070b14;
            font-weight: 800;
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-sub {
            font-size: 12px;
            color: var(--text-muted);
        }
        .rank-heat {
            font-size: 12px;
            color: var(--glow-cyan);
            font-weight: 600;
        }

        /* 板块 4: 音画解码与播放支持规范 */
        .specs-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .spec-item-box {
            background: rgba(13, 21, 39, 0.7);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border-top: 3px solid var(--glow-cyan);
            transition: var(--transition);
        }
        .spec-item-box:hover {
            border-top-color: var(--glow-pink);
            transform: translateY(-4px);
        }
        .spec-icon-badge {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(5, 217, 232, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--glow-cyan);
        }
        .spec-icon-badge svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }
        .spec-title {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .spec-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 板块 5: 分类专属观影与选片指南 */
        .guide-section-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .guide-text-content {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .guide-feature-point {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .guide-point-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(255, 42, 109, 0.15);
            color: var(--glow-pink);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .guide-point-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .guide-point-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .guide-media-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-card);
            position: relative;
            background: var(--bg-surface);
        }
        .guide-media-card img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }
        .guide-media-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 11, 20, 0.2) 0%, rgba(7, 11, 20, 0.85) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 24px;
        }
        .guide-overlay-title {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .guide-overlay-sub {
            font-size: 13px;
            color: var(--glow-cyan);
        }

        /* 板块 6: 分类高频体验解答与求片建议 */
        .faq-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .faq-card-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 26px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-q-badge {
            display: inline-block;
            color: var(--glow-pink);
            font-weight: 800;
            font-size: 18px;
            margin-bottom: -4px;
        }
        .faq-q-title {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
        }
        .faq-a-body {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 板块 7: 跨端同步与下载引导条 */
        .sync-banner {
            background: linear-gradient(90deg, rgba(13, 21, 39, 0.95) 0%, rgba(25, 38, 70, 0.9) 100%);
            border: 1px solid rgba(5, 217, 232, 0.3);
            border-radius: var(--radius-lg);
            padding: 36px 44px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
            overflow: hidden;
        }
        .sync-banner::before {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(255, 42, 109, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }
        .sync-banner-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .sync-banner-content p {
            font-size: 14px;
            color: var(--text-light);
            max-width: 680px;
        }
        .sync-actions {
            display: flex;
            gap: 16px;
            flex-shrink: 0;
            z-index: 1;
        }

        /* 页脚规范对齐 */
        .site-footer {
            background: #05080e;
            border-top: 1px solid var(--border-card);
            padding: 60px 0 24px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand-desc {
            margin-top: 12px;
            line-height: 1.7;
            font-size: 13px;
            max-width: 320px;
            color: var(--text-muted);
        }
        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
        }
        .footer-links a:hover {
            color: var(--glow-cyan);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .movie-stream-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .rank-grid {
                grid-template-columns: 1fr;
            }
            .specs-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .sync-banner {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
                padding: 28px;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                height: auto;
                padding: 14px 0;
            }
            .header-inner {
                flex-direction: column;
                gap: 14px;
            }
            .nav-menu {
                gap: 16px;
                flex-wrap: wrap;
                justify-content: center;
            }
            .header-cta-group {
                width: 100%;
                justify-content: center;
            }
            .movie-stream-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .guide-section-grid {
                grid-template-columns: 1fr;
            }
            .faq-cards-grid {
                grid-template-columns: 1fr;
            }
            .category-h1 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
  --bg-base: #070b14;
  --bg-surface: #0d1527;
  --bg-card: rgba(19, 31, 56, 0.72);
  --border-card: rgba(255, 255, 255, 0.08);
  --glow-pink: #ff2a6d;
  --glow-cyan: #05d9e8;
  --gradient-accent: linear-gradient(135deg, #ff2a6d 0%, #ff5e3a 100%);
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-light: #cbd5e1;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-pink: 0 0 24px rgba(255, 42, 109, 0.4);
  --shadow-cyan: 0 0 20px rgba(5, 217, 232, 0.3);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-card);
  height: 74px;
  display: flex;
  align-items: center;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #fff;
}
.brand-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 14px rgba(255, 42, 109, 0.6);
}
.brand-icon svg {
  width: 18px;
  height: 18px;
  fill: #fff;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-item a {
  font-size: 15px;
  color: var(--text-light);
  font-weight: 500;
}
.nav-item a:hover, .nav-item.active a {
  color: var(--glow-cyan);
  text-shadow: 0 0 10px rgba(5, 217, 232, 0.5);
}
.header-cta-group {
  display: flex;
  align-items: center;
  gap: 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-secondary {
  background: rgba(13, 21, 39, 0.8);
  border-color: rgba(5, 217, 232, 0.5);
  color: var(--glow-cyan);
}
.btn-secondary:hover {
  background: rgba(5, 217, 232, 0.15);
  box-shadow: var(--shadow-cyan);
  border-color: var(--glow-cyan);
}
.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: var(--shadow-pink);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(255, 42, 109, 0.7);
}
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}
.glass-card:hover {
  border-color: rgba(5, 217, 232, 0.35);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}
.section-block {
  padding: 60px 0;
  position: relative;
}
.section-header {
  margin-bottom: 36px;
}
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--glow-pink);
  background: rgba(255, 42, 109, 0.12);
  border: 1px solid rgba(255, 42, 109, 0.3);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 分类导视区 */
.filter-header-panel {
  padding: 36px 0 28px;
  background: radial-gradient(circle at top right, rgba(255, 42, 109, 0.08), transparent 40%), var(--bg-surface);
  border-bottom: 1px solid var(--border-card);
}
.cat-heading-box {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 18px;
}
.cat-heading-box h1 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
}
.cat-heading-box h1 span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.cat-meta-stat {
  font-size: 14px;
  color: var(--text-muted);
}
.cat-meta-stat strong {
  color: var(--glow-cyan);
}
.filter-group-wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.filter-row {
  display: flex;
  align-items: center;
  font-size: 14px;
}
.filter-label {
  width: 72px;
  color: var(--text-muted);
  font-weight: 600;
  flex-shrink: 0;
}
.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-pill {
  padding: 4px 14px;
  border-radius: 6px;
  color: var(--text-light);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}
.filter-pill:hover {
  color: var(--glow-cyan);
  background: rgba(5, 217, 232, 0.08);
}
.filter-pill.active {
  background: rgba(255, 42, 109, 0.16);
  border-color: var(--glow-pink);
  color: #fff;
  font-weight: 600;
}

/* 5列海报网格 */
.media-stream-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.media-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.media-card:hover {
  transform: translateY(-5px);
  border-color: rgba(5, 217, 232, 0.4);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.6);
}
.media-poster-box {
  position: relative;
  width: 100%;
  aspect-ratio: 3/4;
  overflow: hidden;
  background: #0d1527;
}
.media-poster-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.media-card:hover .media-poster-box img {
  transform: scale(1.05);
}
.media-badge-top {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(6px);
  color: var(--glow-cyan);
  border: 1px solid rgba(5, 217, 232, 0.3);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
}
.media-status-strip {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 18px 10px 6px;
  background: linear-gradient(180deg, transparent 0%, rgba(7, 11, 20, 0.95) 100%);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}
.media-progress {
  color: var(--text-light);
}
.media-score {
  color: #ffb703;
  font-weight: 700;
}
.media-info {
  padding: 12px 14px;
}
.media-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 6px;
}
.media-desc-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}
.load-more-wrap {
  text-align: center;
  margin-top: 40px;
}

/* 排行榜单 3列 */
.rank-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.rank-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
}
.rank-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.rank-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}
.rank-tag {
  font-size: 12px;
  color: var(--glow-pink);
  background: rgba(255, 42, 109, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
}
.rank-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 12px;
}
.rank-num {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}
.rank-item:nth-child(1) .rank-num {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 0 10px rgba(255, 42, 109, 0.5);
}
.rank-item:nth-child(2) .rank-num {
  background: rgba(5, 217, 232, 0.2);
  color: var(--glow-cyan);
}
.rank-item:nth-child(3) .rank-num {
  background: rgba(255, 183, 3, 0.2);
  color: #ffb703;
}
.rank-name {
  flex: 1;
  font-size: 14px;
  color: var(--text-light);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rank-val {
  font-size: 12px;
  color: var(--text-muted);
}

/* 解码支持规范 4列 */
.codec-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.codec-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
}
.codec-card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.codec-icon-ring {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(5, 217, 232, 0.1);
  border: 1px solid rgba(5, 217, 232, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--glow-cyan);
}
.codec-icon-ring svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}
.codec-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}
.codec-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 观影指南分栏 */
.guide-split-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
.guide-content h3 {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.4;
}
.guide-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}
.guide-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.guide-spec-item {
  background: rgba(13, 21, 39, 0.6);
  border-left: 2px solid var(--glow-pink);
  padding: 10px 14px;
  border-radius: 4px;
}
.guide-spec-title {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
}
.guide-spec-sub {
  font-size: 12px;
  color: var(--text-muted);
}
.guide-media-cover {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(5, 217, 232, 0.2);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
}

/* 问答微矩阵 3列 */
.faq-compact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.faq-box {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
}
.faq-box h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.faq-box h4::before {
  content: "Q";
  display: inline-block;
  width: 22px;
  height: 22px;
  line-height: 22px;
  text-align: center;
  background: var(--gradient-accent);
  color: #fff;
  font-size: 12px;
  border-radius: 4px;
  font-weight: 800;
}
.faq-box p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 跨端同步引导条 */
.bottom-sync-banner {
  background: linear-gradient(135deg, rgba(13, 21, 39, 0.95) 0%, rgba(255, 42, 109, 0.15) 100%);
  border: 1px solid rgba(255, 42, 109, 0.3);
  border-radius: var(--radius-lg);
  padding: 36px 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 60px;
}
.sync-banner-text h3 {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.sync-banner-text p {
  font-size: 14px;
  color: var(--text-light);
}
.sync-banner-actions {
  display: flex;
  gap: 16px;
}

/* 页脚 */
.site-footer {
  background: #04070d;
  border-top: 1px solid var(--border-card);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-top: 14px;
  max-width: 320px;
}
.footer-col h5 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-links a:hover {
  color: var(--glow-cyan);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12px;
  color: #64748b;
  text-align: center;
}

/* 响应式断点 */
@media (max-width: 1024px) {
  .media-stream-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .rank-grid {
    grid-template-columns: 1fr;
  }
  .codec-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .guide-split-box {
    grid-template-columns: 1fr;
  }
  .faq-compact-grid {
    grid-template-columns: 1fr;
  }
  .bottom-sync-banner {
    flex-direction: column;
    text-align: center;
    gap: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  .media-stream-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .codec-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* roulang page: category4 */
:root {
      --bg-base: #070b14;
      --bg-surface: #0d1527;
      --bg-card: rgba(19, 31, 56, 0.72);
      --border-card: rgba(255, 255, 255, 0.08);
      --glow-pink: #ff2a6d;
      --glow-cyan: #05d9e8;
      --gradient-accent: linear-gradient(135deg, #ff2a6d 0%, #ff5e3a 100%);
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --text-light: #cbd5e1;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-pink: 0 0 24px rgba(255, 42, 109, 0.4);
      --shadow-cyan: 0 0 20px rgba(5, 217, 232, 0.3);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(7, 11, 20, 0.82);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border-card);
      height: 74px;
      display: flex;
      align-items: center;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: #fff;
    }
    .brand-icon {
      width: 32px;
      height: 32px;
      background: var(--gradient-accent);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 14px rgba(255, 42, 109, 0.6);
    }
    .brand-icon svg {
      width: 18px;
      height: 18px;
      fill: #fff;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-item a {
      font-size: 15px;
      color: var(--text-light);
      font-weight: 500;
    }
    .nav-item a:hover, .nav-item.active a {
      color: var(--glow-cyan);
      text-shadow: 0 0 10px rgba(5, 217, 232, 0.5);
    }
    .header-cta-group {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-secondary {
      background: rgba(13, 21, 39, 0.8);
      border-color: rgba(5, 217, 232, 0.5);
      color: var(--glow-cyan);
    }
    .btn-secondary:hover {
      background: rgba(5, 217, 232, 0.15);
      box-shadow: var(--shadow-cyan);
      border-color: var(--glow-cyan);
    }
    .btn-primary {
      background: var(--gradient-accent);
      color: #fff;
      box-shadow: var(--shadow-pink);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 30px rgba(255, 42, 109, 0.7);
    }
    .section-block {
      padding: 60px 0;
      position: relative;
    }
    .section-alt {
      background: linear-gradient(180deg, rgba(13, 21, 39, 0.4) 0%, rgba(7, 11, 20, 0.8) 100%);
    }
    .section-header {
      margin-bottom: 36px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--glow-pink);
      background: rgba(255, 42, 109, 0.12);
      border: 1px solid rgba(255, 42, 109, 0.3);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 700;
      color: #fff;
      line-height: 1.3;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 820px;
    }
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
    }
    .glass-card:hover {
      border-color: rgba(5, 217, 232, 0.35);
      transform: translateY(-4px);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    }

    /* 板块 1: 分类专属导视区 */
    .filter-dashboard {
      padding: 40px 0 24px;
      background: radial-gradient(circle at top right, rgba(5, 217, 232, 0.08), transparent 45%);
      border-bottom: 1px solid var(--border-card);
    }
    .filter-header-wrap {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      margin-bottom: 28px;
      flex-wrap: wrap;
      gap: 16px;
    }
    .filter-header-wrap h1 {
      font-size: 34px;
      font-weight: 800;
      color: #fff;
      line-height: 1.2;
    }
    .filter-header-wrap h1 span {
      background: var(--gradient-accent);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .filter-summary {
      font-size: 14px;
      color: var(--glow-cyan);
      background: rgba(5, 217, 232, 0.08);
      border: 1px solid rgba(5, 217, 232, 0.2);
      padding: 6px 16px;
      border-radius: 20px;
    }
    .filter-panel {
      background: var(--bg-surface);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .filter-row {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }
    .filter-label {
      font-size: 13px;
      color: var(--text-muted);
      min-width: 60px;
      font-weight: 600;
    }
    .filter-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .filter-pill {
      font-size: 13px;
      padding: 4px 12px;
      border-radius: 6px;
      color: var(--text-light);
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
    }
    .filter-pill:hover {
      color: #fff;
      border-color: rgba(255, 255, 255, 0.2);
    }
    .filter-pill.active {
      background: var(--glow-pink);
      color: #fff;
      font-weight: 600;
      box-shadow: 0 0 12px rgba(255, 42, 109, 0.4);
    }

    /* 板块 2: 分类影视卡片主体瀑布流 (5列) */
    .media-flow-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
    }
    .media-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      position: relative;
    }
    .media-card:hover {
      transform: translateY(-6px);
      border-color: var(--glow-cyan);
      box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
    }
    .media-poster-wrap {
      position: relative;
      width: 100%;
      aspect-ratio: 2 / 3;
      overflow: hidden;
      background: #0d1527;
    }
    .media-poster-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-poster-wrap img {
      transform: scale(1.06);
    }
    .media-badge-group {
      position: absolute;
      top: 10px;
      left: 10px;
      display: flex;
      flex-direction: column;
      gap: 6px;
      z-index: 2;
    }
    .badge-resolution {
      font-size: 11px;
      font-weight: 700;
      padding: 2px 6px;
      background: rgba(0, 0, 0, 0.75);
      border: 1px solid var(--glow-cyan);
      color: var(--glow-cyan);
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .badge-score {
      position: absolute;
      bottom: 10px;
      right: 10px;
      background: rgba(7, 11, 20, 0.85);
      border: 1px solid rgba(255, 42, 109, 0.5);
      color: var(--glow-pink);
      font-weight: 800;
      font-size: 13px;
      padding: 2px 8px;
      border-radius: 12px;
      z-index: 2;
    }
    .media-meta-wrap {
      padding: 14px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .media-title {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 6px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .media-desc-snippet {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 10px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .media-bottom-row {
      margin-top: auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-light);
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 8px;
    }
    .more-action-wrap {
      margin-top: 36px;
      text-align: center;
    }

    /* 板块 3: 榜单 */
    .rank-columns-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .rank-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 24px;
    }
    .rank-col-title {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: 12px;
    }
    .rank-col-title .rank-icon-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--glow-pink);
      box-shadow: 0 0 10px var(--glow-pink);
    }
    .rank-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .rank-item {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .rank-number {
      font-size: 16px;
      font-weight: 800;
      width: 24px;
      text-align: center;
      color: var(--text-muted);
    }
    .rank-item:nth-child(1) .rank-number { color: #ff2a6d; }
    .rank-item:nth-child(2) .rank-number { color: #ff8c00; }
    .rank-item:nth-child(3) .rank-number { color: #05d9e8; }
    .rank-info {
      flex-grow: 1;
      overflow: hidden;
    }
    .rank-item-name {
      font-size: 14px;
      color: #fff;
      font-weight: 500;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .rank-item-sub {
      font-size: 12px;
      color: var(--text-muted);
    }
    .rank-metric {
      font-size: 13px;
      font-weight: 600;
      color: var(--glow-cyan);
    }

    /* 板块 4: 音画解码与播放支持规范 */
    .specs-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .spec-item-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 24px;
      border-top: 3px solid var(--glow-cyan);
    }
    .spec-item-card h4 {
      font-size: 17px;
      color: #fff;
      margin-bottom: 10px;
      font-weight: 700;
    }
    .spec-item-card p {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.6;
    }

    /* 板块 5: 观影与选片指南 */
    .guide-split-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 36px;
      align-items: center;
    }
    .guide-content-box h3 {
      font-size: 24px;
      color: #fff;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .guide-content-box p {
      font-size: 15px;
      color: var(--text-light);
      line-height: 1.8;
      margin-bottom: 20px;
    }
    .guide-points-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .guide-points-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--text-light);
    }
    .guide-bullet {
      color: var(--glow-pink);
      font-size: 16px;
      line-height: 1.4;
    }
    .guide-visual-box {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(5, 217, 232, 0.3);
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
    }

    /* 板块 6: 常见体验与疑难解答 */
    .faq-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .faq-single-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 24px;
    }
    .faq-single-card h4 {
      font-size: 16px;
      color: #fff;
      margin-bottom: 12px;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .faq-single-card h4::before {
      content: "Q";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      border-radius: 4px;
      background: rgba(255, 42, 109, 0.2);
      color: var(--glow-pink);
      font-size: 12px;
      font-weight: 800;
    }
    .faq-single-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 7: 跨端同步与下载引导条 */
    .download-strip-banner {
      background: linear-gradient(135deg, rgba(13, 21, 39, 0.95) 0%, rgba(25, 41, 77, 0.95) 100%);
      border: 1px solid rgba(5, 217, 232, 0.3);
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    }
    .strip-text-group h3 {
      font-size: 24px;
      color: #fff;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .strip-text-group p {
      font-size: 14px;
      color: var(--text-light);
    }
    .strip-action-group {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-shrink: 0;
    }

    /* 页脚 */
    .site-footer {
      background: #04070d;
      border-top: 1px solid var(--border-card);
      padding: 60px 0 30px;
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-top: 12px;
      max-width: 340px;
    }
    .footer-col h5 {
      font-size: 15px;
      color: #fff;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      font-size: 13px;
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--glow-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: var(--text-muted);
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .media-flow-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .specs-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .rank-columns-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .site-header {
        height: auto;
        padding: 12px 0;
      }
      .header-inner {
        flex-direction: column;
        gap: 12px;
      }
      .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px;
      }
      .header-cta-group {
        width: 100%;
        justify-content: center;
      }
      .media-flow-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .guide-split-layout {
        grid-template-columns: 1fr;
      }
      .faq-cards-grid {
        grid-template-columns: 1fr;
      }
      .download-strip-banner {
        flex-direction: column;
        text-align: center;
        padding: 28px 20px;
      }
      .strip-action-group {
        width: 100%;
        justify-content: center;
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 520px) {
      .media-flow-grid {
        grid-template-columns: 1fr;
      }
      .filter-header-wrap h1 {
        font-size: 26px;
      }
      .section-title {
        font-size: 22px;
      }
    }

/* roulang page: category5 */
:root {
      --bg-base: #070b14;
      --bg-surface: #0d1527;
      --bg-card: rgba(19, 31, 56, 0.72);
      --border-card: rgba(255, 255, 255, 0.08);
      --glow-pink: #ff2a6d;
      --glow-cyan: #05d9e8;
      --gradient-accent: linear-gradient(135deg, #ff2a6d 0%, #ff5e3a 100%);
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --text-light: #cbd5e1;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-pink: 0 0 24px rgba(255, 42, 109, 0.4);
      --shadow-cyan: 0 0 20px rgba(5, 217, 232, 0.3);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(7, 11, 20, 0.82);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border-card);
      height: 74px;
      display: flex;
      align-items: center;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: #fff;
    }
    .brand-icon {
      width: 32px;
      height: 32px;
      background: var(--gradient-accent);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 14px rgba(255, 42, 109, 0.6);
      flex-shrink: 0;
    }
    .brand-icon svg {
      width: 18px;
      height: 18px;
      fill: #fff;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-item a {
      font-size: 15px;
      color: var(--text-light);
      font-weight: 500;
    }
    .nav-item a:hover, .nav-item.active a {
      color: var(--glow-cyan);
      text-shadow: 0 0 10px rgba(5, 217, 232, 0.5);
    }
    .header-cta-group {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-secondary {
      background: rgba(13, 21, 39, 0.8);
      border-color: rgba(5, 217, 232, 0.5);
      color: var(--glow-cyan);
    }
    .btn-secondary:hover {
      background: rgba(5, 217, 232, 0.15);
      box-shadow: var(--shadow-cyan);
      border-color: var(--glow-cyan);
    }
    .btn-primary {
      background: var(--gradient-accent);
      color: #fff;
      box-shadow: var(--shadow-pink);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 30px rgba(255, 42, 109, 0.7);
    }

    .section-block {
      padding: 64px 0;
      position: relative;
    }
    .section-alt {
      background: linear-gradient(180deg, rgba(13, 21, 39, 0.4) 0%, rgba(7, 11, 20, 0.8) 100%);
    }
    .section-header {
      margin-bottom: 36px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--glow-pink);
      background: rgba(255, 42, 109, 0.12);
      border: 1px solid rgba(255, 42, 109, 0.3);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 700;
      color: #fff;
      line-height: 1.3;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 820px;
    }

    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
    }
    .glass-card:hover {
      border-color: rgba(5, 217, 232, 0.35);
      transform: translateY(-4px);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    }

    /* 板块 1: 分类专属导视区 */
    .filter-guide-hero {
      padding: 44px 0 32px;
      background: radial-gradient(circle at 80% 20%, rgba(5, 217, 232, 0.08) 0%, transparent 60%),
                  radial-gradient(circle at 10% 80%, rgba(255, 42, 109, 0.07) 0%, transparent 50%),
                  var(--bg-surface);
      border-bottom: 1px solid var(--border-card);
    }
    .cat-head-row {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 28px;
    }
    .cat-h1 {
      font-size: 34px;
      font-weight: 800;
      color: #fff;
      line-height: 1.2;
    }
    .cat-h1 span {
      background: var(--gradient-accent);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .filter-wrapper {
      background: rgba(19, 31, 56, 0.6);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 16px 20px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .filter-line {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
      font-size: 13px;
    }
    .filter-label {
      color: var(--text-muted);
      font-weight: 600;
      min-width: 64px;
    }
    .filter-options {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .filter-chip {
      padding: 4px 12px;
      border-radius: 6px;
      background: rgba(255, 255, 255, 0.03);
      color: var(--text-light);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
    }
    .filter-chip:hover {
      border-color: rgba(5, 217, 232, 0.4);
      color: #fff;
    }
    .filter-chip.active {
      background: rgba(255, 42, 109, 0.15);
      border-color: var(--glow-pink);
      color: #fff;
      font-weight: 600;
    }

    /* 板块 2: 分类影视卡片主体瀑布流 (5 列海报网格) */
    .media-grid-5 {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
    }
    .media-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      position: relative;
    }
    .media-card:hover {
      border-color: rgba(5, 217, 232, 0.45);
      transform: translateY(-6px);
      box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
    }
    .poster-wrap {
      position: relative;
      aspect-ratio: 2 / 3;
      overflow: hidden;
      background: #0d1527;
    }
    .poster-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .media-card:hover .poster-wrap img {
      transform: scale(1.05);
    }
    .badge-top-left {
      position: absolute;
      top: 10px;
      left: 10px;
      background: rgba(7, 11, 20, 0.85);
      border: 1px solid rgba(5, 217, 232, 0.4);
      color: var(--glow-cyan);
      font-size: 11px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      backdrop-filter: blur(8px);
    }
    .badge-top-right {
      position: absolute;
      top: 10px;
      right: 10px;
      background: var(--gradient-accent);
      color: #fff;
      font-size: 11px;
      font-weight: 800;
      padding: 2px 7px;
      border-radius: 4px;
    }
    .poster-bottom-mask {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 50%;
      background: linear-gradient(180deg, transparent 0%, rgba(7, 11, 20, 0.95) 100%);
    }
    .card-meta-content {
      padding: 14px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
      justify-content: space-between;
    }
    .media-title {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .media-subinfo {
      font-size: 12px;
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .media-tag-pills {
      display: flex;
      gap: 6px;
      margin-top: 8px;
    }
    .tag-pill {
      font-size: 10px;
      padding: 2px 6px;
      border-radius: 3px;
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-light);
      border: 1px solid rgba(255, 255, 255, 0.05);
    }
    .btn-more-wrap {
      text-align: center;
      margin-top: 36px;
    }

    /* 板块 3: 分类热播热度榜单 (3 栏横向排行榜) */
    .rank-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .rank-col {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 24px;
    }
    .rank-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .rank-header h3 {
      font-size: 18px;
      color: #fff;
      font-weight: 700;
    }
    .rank-tag {
      font-size: 12px;
      color: var(--glow-cyan);
    }
    .rank-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .rank-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
    }
    .rank-num {
      width: 24px;
      height: 24px;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: 800;
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-muted);
      flex-shrink: 0;
    }
    .rank-item:nth-child(1) .rank-num {
      background: #ff2a6d;
      color: #fff;
      box-shadow: 0 0 10px rgba(255, 42, 109, 0.5);
    }
    .rank-item:nth-child(2) .rank-num {
      background: #ff5e3a;
      color: #fff;
    }
    .rank-item:nth-child(3) .rank-num {
      background: var(--glow-cyan);
      color: #070b14;
    }
    .rank-name {
      flex-grow: 1;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      color: var(--text-light);
    }
    .rank-score {
      font-weight: 700;
      color: var(--glow-pink);
      font-size: 13px;
    }

    /* 板块 4: 音画解码与播放支持规范 */
    .specs-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .spec-card {
      background: rgba(13, 21, 39, 0.8);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 24px;
      border-top: 3px solid var(--glow-cyan);
    }
    .spec-card h4 {
      font-size: 18px;
      color: #fff;
      margin-bottom: 10px;
    }
    .spec-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .spec-value {
      font-size: 22px;
      font-weight: 800;
      color: var(--glow-cyan);
      margin-top: 14px;
    }

    /* 板块 5: 分类专属观影与选片指南 (图文分栏) */
    .guide-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .guide-box {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 32px;
    }
    .guide-item {
      margin-bottom: 22px;
    }
    .guide-item:last-child {
      margin-bottom: 0;
    }
    .guide-item h4 {
      font-size: 17px;
      color: #fff;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .guide-item h4::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--glow-pink);
      display: inline-block;
    }
    .guide-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .guide-media {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-card);
      position: relative;
    }
    .guide-media img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    /* 板块 6: 分类高频体验解答与求片建议 (3 列卡片) */
    .faq-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .faq-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 24px;
    }
    .faq-card h4 {
      font-size: 16px;
      color: #fff;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .faq-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 7: 跨端同步与下载引导条 (轻量通栏 Banner) */
    .sync-banner {
      background: linear-gradient(135deg, rgba(13, 21, 39, 0.95) 0%, rgba(255, 42, 109, 0.15) 100%);
      border: 1px solid rgba(5, 217, 232, 0.3);
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      flex-wrap: wrap;
    }
    .banner-text h3 {
      font-size: 24px;
      color: #fff;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .banner-text p {
      font-size: 14px;
      color: var(--text-light);
      max-width: 680px;
    }
    .banner-actions {
      display: flex;
      gap: 14px;
      flex-shrink: 0;
    }

    /* 统一页脚 */
    .site-footer {
      background: #04070d;
      border-top: 1px solid var(--border-card);
      padding: 60px 0 30px;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand-desc {
      color: var(--text-muted);
      font-size: 13px;
      line-height: 1.7;
      margin-top: 14px;
      max-width: 360px;
    }
    .footer-col h5 {
      color: #fff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      color: var(--text-muted);
      font-size: 13px;
    }
    .footer-links a:hover {
      color: var(--glow-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      color: #64748b;
      font-size: 12px;
      text-align: center;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .media-grid-5 {
        grid-template-columns: repeat(3, 1fr);
      }
      .specs-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .rank-grid-3 {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .site-header {
        height: auto;
        padding: 12px 0;
      }
      .header-inner {
        flex-direction: column;
        gap: 14px;
      }
      .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
      }
      .media-grid-5 {
        grid-template-columns: repeat(2, 1fr);
      }
      .guide-split {
        grid-template-columns: 1fr;
      }
      .faq-grid-3 {
        grid-template-columns: 1fr;
      }
      .sync-banner {
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 520px) {
      .cat-h1 {
        font-size: 26px;
      }
      .media-grid-5 {
        grid-template-columns: 1fr;
      }
      .specs-grid {
        grid-template-columns: 1fr;
      }
      .header-cta-group {
        width: 100%;
        justify-content: center;
      }
    }