/* roulang page: index */
:root {
      --c-primary: #1C1E21;
      --c-accent: #C26D43;
      --c-accent-hover: #A85A35;
      --c-bg: #FAF9F6;
      --c-surface: #FFFFFF;
      --c-surface-soft: #F3EFEA;
      --c-text: #2D3139;
      --c-text-muted: #6B707B;
      --c-border: rgba(28, 30, 33, 0.08);
      --c-border-hover: rgba(194, 109, 67, 0.4);
      --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.03);
      --shadow-md: 0 12px 28px -6px rgba(0, 0, 0, 0.06);
      --radius: 8px;
      --transition: all 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      background-color: var(--c-bg);
      color: var(--c-text);
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--c-accent);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    /* 顶部导航 */
    .site-header {
      background: rgba(250, 249, 246, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--c-border);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .header-top {
      padding: 1rem 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(28, 30, 33, 0.04);
    }
    .brand-logo {
      font-size: 1.5rem;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: var(--c-primary);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .brand-logo::before {
      content: "";
      display: inline-block;
      width: 10px;
      height: 10px;
      background: var(--c-accent);
      border-radius: 50%;
    }
    .header-cta-btn {
      display: inline-block;
      padding: 0.55rem 1.4rem;
      background: var(--c-primary);
      color: #fff;
      font-size: 0.88rem;
      font-weight: 500;
      border-radius: 40px;
      border: 1px solid var(--c-primary);
    }
    .header-cta-btn:hover {
      background: var(--c-accent);
      border-color: var(--c-accent);
      color: #fff;
    }
    .header-nav-strip {
      padding: 0.6rem 0;
      overflow-x: auto;
      white-space: nowrap;
    }
    .nav-tabs {
      display: flex;
      gap: 0.5rem;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-tabs li a {
      display: inline-block;
      padding: 0.4rem 1.1rem;
      font-size: 0.88rem;
      color: var(--c-text-muted);
      border-radius: 30px;
      background: transparent;
      border: 1px solid transparent;
    }
    .nav-tabs li a:hover {
      background: var(--c-surface-soft);
      color: var(--c-primary);
    }
    .nav-tabs li a.active {
      background: var(--c-primary);
      color: #FFFFFF;
      font-weight: 500;
    }

    /* 基础通用组件与版块 */
    .sec-wrap {
      padding: 5rem 0;
      position: relative;
    }
    .sec-alt {
      background-color: var(--c-surface);
      border-top: 1px solid var(--c-border);
      border-bottom: 1px solid var(--c-border);
    }
    .sec-soft {
      background-color: var(--c-surface-soft);
      border-top: 1px solid var(--c-border);
      border-bottom: 1px solid var(--c-border);
    }
    .sec-header {
      margin-bottom: 3.2rem;
    }
    .sec-eyebrow {
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--c-accent);
      margin-bottom: 0.6rem;
    }
    .sec-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--c-primary);
      line-height: 1.35;
      margin-bottom: 0.8rem;
    }
    .sec-desc {
      font-size: 0.98rem;
      color: var(--c-text-muted);
      max-width: 680px;
      line-height: 1.7;
    }

    .btn-main {
      display: inline-block;
      background: var(--c-accent);
      color: #fff;
      padding: 0.75rem 1.8rem;
      font-size: 0.92rem;
      font-weight: 500;
      border-radius: 4px;
      border: 1px solid var(--c-accent);
    }
    .btn-main:hover {
      background: var(--c-accent-hover);
      color: #fff;
    }
    .btn-outline {
      display: inline-block;
      background: transparent;
      color: var(--c-primary);
      padding: 0.75rem 1.8rem;
      font-size: 0.92rem;
      font-weight: 500;
      border-radius: 4px;
      border: 1px solid var(--c-border);
    }
    .btn-outline:hover {
      border-color: var(--c-primary);
      background: rgba(28, 30, 33, 0.03);
    }

    /* 板块一：Hero 价值主张 */
    .hero-sec {
      padding: 4.5rem 0 5.5rem;
      background: #FAF9F6;
      border-bottom: 1px solid var(--c-border);
    }
    .hero-h1 {
      font-size: 2.7rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--c-primary);
      margin-bottom: 1.5rem;
      letter-spacing: -0.5px;
    }
    .hero-lead {
      font-size: 1.05rem;
      color: var(--c-text-muted);
      line-height: 1.8;
      margin-bottom: 2rem;
    }
    .hero-quiz-card {
      background: #fff;
      border: 1px solid var(--c-border);
      padding: 2rem;
      border-radius: var(--radius);
      box-shadow: var(--shadow-md);
    }
    .quiz-title {
      font-size: 1.15rem;
      font-weight: 600;
      color: var(--c-primary);
      margin-bottom: 1.2rem;
    }
    .quiz-options {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
      margin-bottom: 1.5rem;
    }
    .quiz-opt {
      display: flex;
      align-items: center;
      padding: 0.75rem 1rem;
      border: 1px solid var(--c-border);
      border-radius: 4px;
      cursor: pointer;
      font-size: 0.88rem;
      transition: var(--transition);
      background: #FAF9F6;
    }
    .quiz-opt:hover {
      border-color: var(--c-accent);
      background: #fff;
    }
    .quiz-opt input {
      margin-right: 0.75rem;
    }

    /* 板块二：功能亮点 */
    .feature-card {
      background: #fff;
      border: 1px solid var(--c-border);
      padding: 2rem 1.5rem;
      border-radius: var(--radius);
      height: 100%;
      transition: var(--transition);
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
      border-color: var(--c-border-hover);
    }
    .feat-num {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--c-accent);
      margin-bottom: 0.8rem;
      font-family: monospace;
    }
    .feat-name {
      font-size: 1.15rem;
      font-weight: 600;
      margin-bottom: 0.6rem;
      color: var(--c-primary);
    }
    .feat-text {
      font-size: 0.88rem;
      color: var(--c-text-muted);
      line-height: 1.65;
    }

    /* 板块三：场景矩阵 */
    .scene-card {
      background: #fff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .scene-img {
      height: 220px;
      overflow: hidden;
      background: var(--c-surface-soft);
    }
    .scene-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .scene-card:hover .scene-img img {
      transform: scale(1.04);
    }
    .scene-content {
      padding: 1.8rem;
      flex: 1;
    }
    .scene-tag {
      font-size: 0.75rem;
      color: var(--c-accent);
      font-weight: 600;
      margin-bottom: 0.4rem;
      display: inline-block;
    }
    .scene-title {
      font-size: 1.18rem;
      font-weight: 600;
      margin-bottom: 0.6rem;
      color: var(--c-primary);
    }
    .scene-desc {
      font-size: 0.88rem;
      color: var(--c-text-muted);
      line-height: 1.65;
    }

    /* 板块四：流程步骤 */
    .step-item {
      position: relative;
      padding: 1.5rem;
      border-left: 2px solid var(--c-accent);
      background: #fff;
      border-radius: 0 var(--radius) var(--radius) 0;
      box-shadow: var(--shadow-sm);
      height: 100%;
    }
    .step-badge {
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--c-accent);
      text-transform: uppercase;
      margin-bottom: 0.4rem;
    }
    .step-head {
      font-size: 1.05rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
      color: var(--c-primary);
    }
    .step-text {
      font-size: 0.85rem;
      color: var(--c-text-muted);
      line-height: 1.6;
    }

    /* 板块五：截图演示 */
    .demo-frame {
      background: #fff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      padding: 1.5rem;
      box-shadow: var(--shadow-md);
    }
    .mock-topbar {
      display: flex;
      gap: 6px;
      margin-bottom: 1rem;
      padding-bottom: 0.75rem;
      border-bottom: 1px solid var(--c-border);
    }
    .mock-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #ddd;
    }
    .mock-screen {
      border-radius: 4px;
      overflow: hidden;
      max-height: 480px;
    }
    .mock-screen img {
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    /* 板块六：客户证言 / 评价墙 */
    .testi-card {
      background: #FAF9F6;
      border: 1px solid var(--c-border);
      padding: 1.8rem;
      border-radius: var(--radius);
      height: 100%;
    }
    .testi-quote {
      font-size: 0.92rem;
      line-height: 1.7;
      color: var(--c-text);
      margin-bottom: 1.2rem;
      font-style: italic;
    }
    .testi-user {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .user-avatar-circle {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--c-surface-soft);
      border: 1px solid var(--c-border);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--c-accent);
    }
    .user-info-name {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--c-primary);
    }
    .user-info-sub {
      font-size: 0.75rem;
      color: var(--c-text-muted);
    }

    /* 板块七：套餐与模式对比 */
    .compare-table-wrap {
      background: #fff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.9rem;
    }
    .compare-table th, .compare-table td {
      padding: 1.1rem 1.4rem;
      border-bottom: 1px solid var(--c-border);
    }
    .compare-table th {
      background: #FAF9F6;
      color: var(--c-primary);
      font-weight: 600;
    }
    .badge-check {
      color: #2e7d32;
      font-weight: 700;
    }
    .badge-none {
      color: #9e9e9e;
    }

    /* 板块八：数据指标分析 */
    .metric-card {
      text-align: center;
      padding: 2.2rem 1rem;
      background: #fff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
    }
    .metric-val {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--c-accent);
      margin-bottom: 0.4rem;
      letter-spacing: -1px;
    }
    .metric-lbl {
      font-size: 0.85rem;
      color: var(--c-text-muted);
    }

    /* 板块九：专门的分类入口板块 */
    .channel-card {
      background: #fff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      padding: 1.8rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: var(--transition);
    }
    .channel-card:hover {
      border-color: var(--c-accent);
      transform: translateX(4px);
      box-shadow: var(--shadow-sm);
    }
    .channel-title {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--c-primary);
      margin-bottom: 0.3rem;
    }
    .channel-desc {
      font-size: 0.85rem;
      color: var(--c-text-muted);
    }
    .channel-arrow {
      color: var(--c-accent);
      font-size: 1.2rem;
      font-weight: 700;
    }

    /* 板块十：CMS 资讯动态列表 */
    .post-card {
      background: #fff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      padding: 1.5rem;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .post-card:hover {
      border-color: var(--c-accent);
      box-shadow: var(--shadow-sm);
    }
    .post-meta-strip {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 0.8rem;
      font-size: 0.78rem;
      color: var(--c-text-muted);
    }
    .post-cat-pill {
      background: var(--c-surface-soft);
      padding: 0.2rem 0.6rem;
      border-radius: 4px;
      color: var(--c-accent);
      font-weight: 500;
    }
    .post-card-title {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--c-primary);
      line-height: 1.4;
      margin-bottom: 0.6rem;
    }
    .post-card-snippet {
      font-size: 0.85rem;
      color: var(--c-text-muted);
      line-height: 1.6;
      margin-bottom: 1.2rem;
      flex: 1;
    }
    .post-read-link {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--c-primary);
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
    }
    .post-read-link:hover {
      color: var(--c-accent);
    }

    /* 板块十一：常见异议与解答 */
    .faq-block {
      background: #fff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      padding: 1.6rem 2rem;
      margin-bottom: 1rem;
    }
    .faq-question {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--c-primary);
      margin-bottom: 0.5rem;
    }
    .faq-answer {
      font-size: 0.9rem;
      color: var(--c-text-muted);
      line-height: 1.7;
    }

    /* 板块十二：下载与开通引导 CTA */
    .cta-sec {
      padding: 5rem 0;
      background-color: var(--c-primary);
      color: #fff;
      text-align: center;
    }
    .cta-h2 {
      font-size: 2.2rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 1rem;
    }
    .cta-p {
      font-size: 1.05rem;
      color: rgba(255, 255, 255, 0.7);
      max-width: 650px;
      margin: 0 auto 2.2rem;
    }

    /* 页脚 */
    .site-footer {
      background: #151618;
      color: #8C909A;
      padding: 4.5rem 0 2rem;
      font-size: 0.88rem;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }
    .footer-col-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 1.2rem;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.6rem;
    }
    .footer-links a:hover {
      color: #fff;
    }
    .footer-bottom {
      margin-top: 3.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8rem;
    }

    @media (max-width: 768px) {
      .hero-h1 {
        font-size: 2rem;
      }
      .sec-title {
        font-size: 1.6rem;
      }
      .sec-wrap {
        padding: 3.5rem 0;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

/* roulang page: article */
:root {
      --c-primary: #1C1E21;
      --c-accent: #C26D43;
      --c-accent-hover: #A85A35;
      --c-bg: #FAF9F6;
      --c-surface: #FFFFFF;
      --c-surface-soft: #F3EFEA;
      --c-text: #2D3139;
      --c-text-muted: #6B707B;
      --c-border: rgba(28, 30, 33, 0.08);
      --c-border-hover: rgba(194, 109, 67, 0.4);
      --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.03);
      --shadow-md: 0 12px 28px -6px rgba(0, 0, 0, 0.06);
      --radius: 8px;
      --transition: all 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    body {
      background-color: var(--c-bg);
      color: var(--c-text);
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, sans-serif;
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--c-accent);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .site-header {
      background: rgba(250, 249, 246, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--c-border);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .header-top {
      padding: 1rem 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(28, 30, 33, 0.04);
    }
    .brand-logo {
      font-size: 1.5rem;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: var(--c-primary);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .brand-logo::before {
      content: "";
      display: inline-block;
      width: 10px;
      height: 10px;
      background: var(--c-accent);
      border-radius: 50%;
    }
    .header-cta-btn {
      display: inline-block;
      padding: 0.55rem 1.4rem;
      background: var(--c-primary);
      color: #fff;
      font-size: 0.88rem;
      font-weight: 500;
      border-radius: 40px;
      border: 1px solid var(--c-primary);
    }
    .header-cta-btn:hover {
      background: var(--c-accent);
      border-color: var(--c-accent);
      color: #fff;
    }
    .header-nav-strip {
      padding: 0.6rem 0;
      overflow-x: auto;
      white-space: nowrap;
    }
    .nav-tabs {
      display: flex;
      gap: 0.5rem;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-tabs li a {
      display: inline-block;
      padding: 0.4rem 1.1rem;
      font-size: 0.88rem;
      color: var(--c-text-muted);
      border-radius: 30px;
      background: transparent;
      border: 1px solid transparent;
    }
    .nav-tabs li a:hover {
      background: var(--c-surface-soft);
      color: var(--c-primary);
    }
    .nav-tabs li a.active {
      background: var(--c-primary);
      color: #FFFFFF;
      font-weight: 500;
    }
    .article-wrap {
      padding: 3.5rem 0 5rem;
    }
    .article-crumb {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      font-size: 0.85rem;
      color: var(--c-text-muted);
      margin-bottom: 1.5rem;
    }
    .article-crumb a:hover {
      color: var(--c-accent);
    }
    .article-badge {
      display: inline-block;
      padding: 0.2rem 0.75rem;
      background: var(--c-surface-soft);
      color: var(--c-accent);
      border-radius: 20px;
      font-size: 0.78rem;
      font-weight: 600;
    }
    .article-header-panel {
      margin-bottom: 2.5rem;
      border-bottom: 1px solid var(--c-border);
      padding-bottom: 2rem;
    }
    .article-title-main {
      font-size: 2.35rem;
      font-weight: 800;
      color: var(--c-primary);
      line-height: 1.35;
      margin-bottom: 1.2rem;
      letter-spacing: -0.5px;
    }
    .article-meta-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 1.5rem;
      font-size: 0.86rem;
      color: var(--c-text-muted);
    }
    .article-meta-item {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }
    .article-lead-box {
      background: var(--c-surface);
      border-left: 3px solid var(--c-accent);
      padding: 1.5rem 1.8rem;
      border-radius: 0 var(--radius) var(--radius) 0;
      box-shadow: var(--shadow-sm);
      margin-bottom: 2.5rem;
      font-size: 1.05rem;
      color: var(--c-text);
      line-height: 1.8;
    }
    .article-content-body {
      font-size: 1.05rem;
      line-height: 1.9;
      color: var(--c-text);
      word-break: break-word;
    }
    .article-content-body p {
      margin-bottom: 1.6rem;
    }
    .article-content-body h2 {
      font-size: 1.65rem;
      font-weight: 700;
      color: var(--c-primary);
      margin-top: 2.4rem;
      margin-bottom: 1rem;
      border-left: 4px solid var(--c-accent);
      padding-left: 0.8rem;
    }
    .article-content-body h3 {
      font-size: 1.35rem;
      font-weight: 600;
      color: var(--c-primary);
      margin-top: 2rem;
      margin-bottom: 0.8rem;
    }
    .article-content-body blockquote {
      margin: 2rem 0;
      padding: 1.2rem 1.8rem;
      background: var(--c-surface-soft);
      border-left: 4px solid var(--c-primary);
      color: var(--c-text-muted);
      font-style: normal;
      border-radius: 0 var(--radius) var(--radius) 0;
    }
    .article-content-body ul, .article-content-body ol {
      margin-bottom: 1.6rem;
      padding-left: 1.5rem;
    }
    .article-content-body li {
      margin-bottom: 0.5rem;
    }
    .article-content-body img {
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      margin: 2rem 0;
    }
    .article-not-found {
      padding: 4rem 2rem;
      text-align: center;
      background: var(--c-surface);
      border-radius: var(--radius);
      border: 1px solid var(--c-border);
      box-shadow: var(--shadow-sm);
    }
    .article-not-found p {
      font-size: 1.15rem;
      color: var(--c-text-muted);
      margin-bottom: 1.5rem;
    }
    .article-notice-card {
      background: var(--c-surface);
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      padding: 1.8rem;
      margin: 3rem 0;
      box-shadow: var(--shadow-sm);
    }
    .notice-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--c-primary);
      margin-bottom: 0.6rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .notice-text {
      font-size: 0.88rem;
      color: var(--c-text-muted);
      line-height: 1.7;
      margin: 0;
    }
    .article-switch-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.2rem;
      margin-top: 3.5rem;
      padding-top: 2rem;
      border-top: 1px solid var(--c-border);
    }
    .switch-card {
      background: var(--c-surface);
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      padding: 1.2rem 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
      transition: var(--transition);
    }
    .switch-card:hover {
      border-color: var(--c-border-hover);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }
    .switch-label {
      font-size: 0.76rem;
      color: var(--c-accent);
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .switch-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--c-primary);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .recommend-section {
      padding: 4.5rem 0 5rem;
      background: var(--c-surface-soft);
      border-top: 1px solid var(--c-border);
    }
    .rec-card {
      background: var(--c-surface);
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .rec-card:hover {
      border-color: var(--c-border-hover);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .rec-img-wrap {
      height: 175px;
      overflow: hidden;
      background: #EBE7DF;
    }
    .rec-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .rec-card:hover .rec-img-wrap img {
      transform: scale(1.05);
    }
    .rec-content {
      padding: 1.3rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .rec-tag {
      font-size: 0.74rem;
      color: var(--c-accent);
      font-weight: 600;
      margin-bottom: 0.4rem;
    }
    .rec-title {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--c-primary);
      line-height: 1.45;
      margin-bottom: 0.6rem;
    }
    .rec-desc {
      font-size: 0.84rem;
      color: var(--c-text-muted);
      line-height: 1.6;
      margin: 0;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .article-cta-box {
      margin-top: 4rem;
      padding: 3rem 2rem;
      background: var(--c-surface);
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .cta-heading {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--c-primary);
      margin-bottom: 0.8rem;
    }
    .cta-subtext {
      font-size: 0.95rem;
      color: var(--c-text-muted);
      max-width: 580px;
      margin: 0 auto 1.8rem;
      line-height: 1.7;
    }
    .btn-main {
      display: inline-block;
      background: var(--c-accent);
      color: #fff;
      padding: 0.75rem 2rem;
      font-size: 0.92rem;
      font-weight: 500;
      border-radius: 4px;
      border: 1px solid var(--c-accent);
      transition: var(--transition);
    }
    .btn-main:hover {
      background: var(--c-accent-hover);
      color: #fff;
    }
    .site-footer {
      background: #151719;
      color: #A0A4AD;
      padding: 4.5rem 0 2.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer-col-title {
      color: #fff;
      font-size: 0.96rem;
      font-weight: 600;
      margin-bottom: 1.2rem;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.6rem;
    }
    .footer-links li a {
      color: #8C909A;
      font-size: 0.85rem;
    }
    .footer-links li a:hover {
      color: #fff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 3.5rem;
      padding-top: 1.8rem;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      font-size: 0.8rem;
      color: #6C7079;
    }
    @media (max-width: 768px) {
      .article-title-main {
        font-size: 1.75rem;
      }
      .article-switch-row {
        grid-template-columns: 1fr;
      }
      .article-wrap {
        padding: 2.2rem 0 3.5rem;
      }
      .article-cta-box {
        padding: 2.2rem 1.2rem;
      }
    }

/* roulang page: category1 */
:root {
      --c-primary: #1C1E21;
      --c-accent: #C26D43;
      --c-accent-hover: #A85A35;
      --c-bg: #FAF9F6;
      --c-surface: #FFFFFF;
      --c-surface-soft: #F3EFEA;
      --c-text: #2D3139;
      --c-text-muted: #6B707B;
      --c-border: rgba(28, 30, 33, 0.08);
      --c-border-hover: rgba(194, 109, 67, 0.4);
      --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.03);
      --shadow-md: 0 12px 28px -6px rgba(0, 0, 0, 0.06);
      --radius: 8px;
      --transition: all 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    * {
      box-sizing: border-box;
    }
    body {
      background-color: var(--c-bg);
      color: var(--c-text);
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      margin: 0;
      padding: 0;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--c-accent);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    /* 顶部导航 */
    .site-header {
      background: rgba(250, 249, 246, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--c-border);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .header-top {
      padding: 1rem 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(28, 30, 33, 0.04);
    }
    .brand-logo {
      font-size: 1.5rem;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: var(--c-primary);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .brand-logo::before {
      content: "";
      display: inline-block;
      width: 10px;
      height: 10px;
      background: var(--c-accent);
      border-radius: 50%;
    }
    .header-cta-btn {
      display: inline-block;
      padding: 0.55rem 1.4rem;
      background: var(--c-primary);
      color: #fff;
      font-size: 0.88rem;
      font-weight: 500;
      border-radius: 40px;
      border: 1px solid var(--c-primary);
    }
    .header-cta-btn:hover {
      background: var(--c-accent);
      border-color: var(--c-accent);
      color: #fff;
    }
    .header-nav-strip {
      padding: 0.6rem 0;
      overflow-x: auto;
      white-space: nowrap;
    }
    .nav-tabs {
      display: flex;
      gap: 0.5rem;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-tabs li a {
      display: inline-block;
      padding: 0.4rem 1.1rem;
      font-size: 0.88rem;
      color: var(--c-text-muted);
      border-radius: 30px;
      background: transparent;
      border: 1px solid transparent;
    }
    .nav-tabs li a:hover {
      background: var(--c-surface-soft);
      color: var(--c-primary);
    }
    .nav-tabs li a.active {
      background: var(--c-primary);
      color: #FFFFFF;
      font-weight: 500;
    }

    /* 页面基础块组件 */
    .sec-block {
      padding: 4.5rem 0;
      border-bottom: 1px solid var(--c-border);
    }
    .sec-block-alt {
      background: var(--c-surface);
    }
    .sec-header {
      margin-bottom: 2.5rem;
    }
    .sec-eyebrow {
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--c-accent);
      margin-bottom: 0.4rem;
    }
    .sec-title {
      font-size: 1.85rem;
      font-weight: 700;
      color: var(--c-primary);
      line-height: 1.35;
      margin-bottom: 0.6rem;
    }
    .sec-sub {
      font-size: 0.95rem;
      color: var(--c-text-muted);
      max-width: 650px;
      margin: 0;
    }
    .btn-main {
      display: inline-block;
      background: var(--c-accent);
      color: #fff;
      padding: 0.75rem 1.8rem;
      font-size: 0.92rem;
      font-weight: 500;
      border-radius: 4px;
      border: 1px solid var(--c-accent);
    }
    .btn-main:hover {
      background: var(--c-accent-hover);
      color: #fff;
    }
    .btn-outline {
      display: inline-block;
      background: transparent;
      color: var(--c-primary);
      padding: 0.75rem 1.8rem;
      font-size: 0.92rem;
      font-weight: 500;
      border-radius: 4px;
      border: 1px solid var(--c-border);
    }
    .btn-outline:hover {
      border-color: var(--c-primary);
      background: rgba(28, 30, 33, 0.03);
    }

    /* 分类专属头部 */
    .cat-hero {
      padding: 3.5rem 0 3rem;
      background: #FAF9F6;
      border-bottom: 1px solid var(--c-border);
    }
    .cat-breadcrumb {
      font-size: 0.85rem;
      color: var(--c-text-muted);
      margin-bottom: 1rem;
    }
    .cat-breadcrumb a {
      color: var(--c-text-muted);
    }
    .cat-breadcrumb a:hover {
      color: var(--c-accent);
    }
    .cat-h1 {
      font-size: 2.3rem;
      font-weight: 800;
      color: var(--c-primary);
      letter-spacing: -0.5px;
      line-height: 1.3;
      margin-bottom: 1rem;
    }
    .cat-desc {
      font-size: 1.02rem;
      color: var(--c-text-muted);
      line-height: 1.8;
      max-width: 820px;
      margin-bottom: 1.8rem;
    }
    .cat-stat-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 1.5rem;
      align-items: center;
      padding-top: 1.2rem;
      border-top: 1px dashed rgba(28,30,33,0.12);
    }
    .cat-stat-item {
      display: flex;
      align-items: baseline;
      gap: 0.4rem;
    }
    .cat-stat-val {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--c-accent);
    }
    .cat-stat-lbl {
      font-size: 0.82rem;
      color: var(--c-text-muted);
    }

    /* 筛选标签条 */
    .filter-strip {
      padding: 1rem 0;
      background: #FFFFFF;
      border-bottom: 1px solid var(--c-border);
    }
    .filter-pills {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      overflow-x: auto;
      white-space: nowrap;
      margin: 0;
      padding: 0.2rem 0;
      list-style: none;
    }
    .filter-pills li span {
      display: inline-block;
      padding: 0.35rem 0.95rem;
      font-size: 0.82rem;
      border-radius: 20px;
      background: var(--c-surface-soft);
      color: var(--c-text);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .filter-pills li.active span,
    .filter-pills li span:hover {
      background: var(--c-primary);
      color: #FFFFFF;
    }

    /* 媒体与动态卡片 */
    .media-card {
      background: var(--c-surface);
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--c-border-hover);
    }
    .media-thumb {
      height: 200px;
      overflow: hidden;
      position: relative;
      background: var(--c-surface-soft);
    }
    .media-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .media-card:hover .media-thumb img {
      transform: scale(1.04);
    }
    .media-badge {
      position: absolute;
      bottom: 10px;
      right: 10px;
      background: rgba(28, 30, 33, 0.8);
      color: #fff;
      font-size: 0.72rem;
      padding: 2px 8px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .media-body {
      padding: 1.4rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .media-meta {
      font-size: 0.78rem;
      color: var(--c-accent);
      font-weight: 600;
      margin-bottom: 0.4rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .media-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--c-primary);
      margin-bottom: 0.6rem;
      line-height: 1.4;
    }
    .media-desc {
      font-size: 0.86rem;
      color: var(--c-text-muted);
      line-height: 1.65;
      margin-bottom: 1.2rem;
      flex-grow: 1;
    }
    .media-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid rgba(28,30,33,0.06);
      padding-top: 0.8rem;
      font-size: 0.8rem;
      color: var(--c-text-muted);
    }

    /* 精选题卡 */
    .spotlight-card {
      background: #FFFFFF;
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .spotlight-inner {
      display: flex;
      flex-wrap: wrap;
    }
    .spotlight-cover {
      flex: 1 1 45%;
      min-height: 320px;
      overflow: hidden;
      background: var(--c-surface-soft);
    }
    .spotlight-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .spotlight-text {
      flex: 1 1 55%;
      padding: 2.8rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .spotlight-tag {
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--c-accent);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 0.6rem;
    }
    .spotlight-h2 {
      font-size: 1.7rem;
      font-weight: 700;
      color: var(--c-primary);
      line-height: 1.35;
      margin-bottom: 1rem;
    }
    .spotlight-para {
      font-size: 0.94rem;
      color: var(--c-text-muted);
      line-height: 1.8;
      margin-bottom: 1.8rem;
    }

    /* 指引栏目 */
    .guide-card {
      background: #FFFFFF;
      border: 1px solid var(--c-border);
      padding: 1.8rem;
      border-radius: var(--radius);
      height: 100%;
    }
    .guide-num {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--c-accent);
      margin-bottom: 0.6rem;
    }
    .guide-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--c-primary);
      margin-bottom: 0.6rem;
    }
    .guide-desc {
      font-size: 0.88rem;
      color: var(--c-text-muted);
      line-height: 1.7;
      margin: 0;
    }

    /* 问答列表 */
    .cat-faq-item {
      background: #FFFFFF;
      border: 1px solid var(--c-border);
      padding: 1.5rem 1.8rem;
      border-radius: var(--radius);
      margin-bottom: 1rem;
    }
    .cat-faq-q {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--c-primary);
      margin-bottom: 0.5rem;
    }
    .cat-faq-a {
      font-size: 0.88rem;
      color: var(--c-text-muted);
      line-height: 1.7;
      margin: 0;
    }

    /* 列表为空友好占位 */
    .empty-placeholder {
      padding: 3rem 1.5rem;
      text-align: center;
      background: var(--c-surface-soft);
      border-radius: var(--radius);
      border: 1px dashed var(--c-border);
      color: var(--c-text-muted);
      font-size: 0.95rem;
    }

    /* 页脚 */
    .site-footer {
      background: #141618;
      color: #C0C3CB;
      padding: 4.5rem 0 2.5rem;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-col-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 1rem;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.55rem;
    }
    .footer-links li a {
      color: #8C909A;
      font-size: 0.86rem;
    }
    .footer-links li a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      margin-top: 3.5rem;
      padding-top: 1.8rem;
      border-top: 1px solid rgba(255,255,255,0.08);
      font-size: 0.8rem;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1rem;
      color: #6C707A;
    }

    @media (max-width: 768px) {
      .spotlight-inner {
        flex-direction: column;
      }
      .spotlight-cover {
        min-height: 220px;
      }
      .spotlight-text {
        padding: 1.8rem;
      }
      .cat-h1 {
        font-size: 1.8rem;
      }
    }