/* roulang page: index */
:root {
      --primary-start: #6366F1;
      --primary-mid: #8B5CF6;
      --primary-end: #EC4899;
      --gradient-main: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
      --gradient-soft: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(236, 72, 153, 0.08) 100%);
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-sub: #64748B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: rgba(226, 232, 240, 0.9);
      --border-focus: #6366F1;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(99, 102, 241, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 20px 35px -8px rgba(99, 102, 241, 0.15);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-pill: 9999px;
      --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-fast);
    }

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition-fast);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--gradient-main);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 20px;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
      position: relative;
      padding: 8px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary-start);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 3px;
      border-radius: 3px;
      background: var(--gradient-main);
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn-outline {
      padding: 9px 18px;
      font-size: 14px;
      font-weight: 600;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-pill);
      background: #fff;
      color: var(--text-muted);
    }
    .btn-outline:hover {
      border-color: var(--primary-start);
      color: var(--primary-start);
    }
    .btn-primary {
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-pill);
      background: var(--gradient-main);
      color: #fff;
      box-shadow: 0 6px 16px rgba(99, 102, 241, 0.28);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(236, 72, 153, 0.32);
    }

    /* 移动端菜单切换按钮 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 通用组件 */
    .pill-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 14px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 600;
      background: var(--gradient-soft);
      color: var(--primary-start);
      border: 1px solid rgba(99, 102, 241, 0.18);
    }
    .pill-badge-green {
      background: rgba(16, 185, 129, 0.1);
      color: #059669;
      border-color: rgba(16, 185, 129, 0.2);
    }
    .pill-badge-amber {
      background: rgba(245, 158, 11, 0.1);
      color: #D97706;
      border-color: rgba(245, 158, 11, 0.2);
    }
    .section-head {
      margin-bottom: 40px;
    }
    .section-head.center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-top: 12px;
      margin-bottom: 14px;
      color: var(--text-main);
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .base-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      transition: var(--transition-fast);
      overflow: hidden;
    }
    .base-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(99, 102, 241, 0.25);
    }

    /* 板块 1: Hero API/开发者风格（蓝图：一句话能力 + 交互代码块 + 控制台 CTA） */
    .hero-section {
      position: relative;
      padding: 70px 0 80px;
      background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      margin-top: 18px;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
      background: var(--gradient-main);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 30px;
      max-width: 620px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 36px;
    }
    .hero-stats-row {
      display: flex;
      gap: 28px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }
    .hero-stat-item strong {
      display: block;
      font-size: 24px;
      font-weight: 800;
      color: var(--text-main);
    }
    .hero-stat-item span {
      font-size: 13px;
      color: var(--text-sub);
    }
    /* 代码/终端模拟块 */
    .console-mockup {
      background: #0F172A;
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: #E2E8F0;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 13px;
    }
    .console-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
      padding-bottom: 14px;
      margin-bottom: 16px;
    }
    .console-dots {
      display: flex;
      gap: 6px;
    }
    .console-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .dot-red { background: #EF4444; }
    .dot-yellow { background: #F59E0B; }
    .dot-green { background: #10B981; }
    .console-status {
      font-size: 12px;
      color: #94A3B8;
    }
    .console-body pre {
      overflow-x: auto;
      line-height: 1.7;
    }
    .code-comment { color: #64748B; }
    .code-keyword { color: #EC4899; }
    .code-string { color: #34D399; }
    .code-func { color: #60A5FA; }

    /* 板块 2: 活动倒计时条与实时数据徽章 */
    .countdown-band {
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 30px 0;
    }
    .countdown-flex {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }
    .countdown-title-wrap {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .countdown-timer {
      display: flex;
      gap: 12px;
    }
    .timer-box {
      background: #0F172A;
      color: #FFFFFF;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      text-align: center;
      min-width: 58px;
    }
    .timer-num {
      font-size: 20px;
      font-weight: 800;
      line-height: 1;
    }
    .timer-label {
      font-size: 11px;
      color: #94A3B8;
      margin-top: 2px;
    }
    .badges-strip {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* 板块 3: 核心功能阵列 */
    .section-spacing {
      padding: 70px 0;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-card {
      padding: 32px;
      position: relative;
    }
    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 16px;
      background: var(--gradient-soft);
      color: var(--primary-start);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
      border: 1px solid rgba(99, 102, 241, 0.2);
    }
    .feature-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .feature-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 4: 多元使用场景 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .scenario-card {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition-fast);
    }
    .scenario-card:hover {
      border-color: var(--primary-mid);
      transform: translateY(-4px);
    }
    .scenario-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary-start);
      text-transform: uppercase;
      margin-bottom: 10px;
    }
    .scenario-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .scenario-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 5: 交互界面与截图演示 */
    .stage-container {
      background: linear-gradient(135deg, #1E1B4B 0%, #0F172A 100%);
      border-radius: var(--radius-lg);
      padding: 48px;
      color: #fff;
      box-shadow: var(--shadow-lg);
    }
    .stage-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .stage-content h3 {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .stage-content p {
      font-size: 15px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .stage-list {
      list-style: none;
      margin-bottom: 30px;
    }
    .stage-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      margin-bottom: 10px;
      color: #E2E8F0;
    }
    .check-dot {
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: #10B981;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
      color: #fff;
    }
    .stage-media img {
      border-radius: var(--radius-md);
      box-shadow: 0 20px 35px rgba(0, 0, 0, 0.4);
      border: 2px solid rgba(255, 255, 255, 0.15);
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    /* 板块 6: 社区玩法步骤与参与流程 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      background: #fff;
      padding: 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--gradient-main);
      color: #fff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      margin-bottom: 16px;
    }

    /* 板块 7: 权益与会员服务方案 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: center;
    }
    .price-card {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: left;
      position: relative;
    }
    .price-card.featured {
      border: 2px solid var(--primary-start);
      box-shadow: var(--shadow-lg);
      transform: scale(1.03);
      z-index: 2;
    }
    .price-badge {
      position: absolute;
      top: -14px;
      right: 24px;
      background: var(--gradient-main);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: var(--radius-pill);
    }
    .price-name {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 6px;
    }
    .price-amount {
      font-size: 36px;
      font-weight: 900;
      color: var(--text-main);
      margin: 16px 0;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }
    .price-amount span {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-sub);
    }
    .price-features {
      list-style: none;
      margin: 24px 0 32px;
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
    }
    .price-features li {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    /* 板块 8: 热门同好分类入口 */
    .channel-matrix {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .channel-card {
      display: flex;
      gap: 18px;
      align-items: center;
      padding: 20px;
      border-radius: var(--radius-md);
      background: #fff;
      border: 1px solid var(--border-color);
    }
    .channel-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--gradient-soft);
      color: var(--primary-start);
      font-size: 22px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    /* 板块 9: 评价墙与用户口碑 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      padding: 26px;
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .avatar-mock {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--gradient-main);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }
    .review-content {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 10: 动态与资讯精选区（CMS 核心） */
    .cms-feed-layout {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 32px;
    }
    .feed-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .feed-card {
      display: grid;
      grid-template-columns: 220px 1fr;
      gap: 20px;
      padding: 18px;
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      transition: var(--transition-fast);
    }
    .feed-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: rgba(99, 102, 241, 0.3);
    }
    .feed-cover {
      width: 100%;
      height: 150px;
      border-radius: var(--radius-md);
      object-fit: cover;
    }
    .feed-detail {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feed-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 12px;
      color: var(--text-sub);
      margin-bottom: 8px;
    }
    .feed-title {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .feed-title:hover {
      color: var(--primary-start);
    }
    .feed-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .side-rank-card {
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 24px;
    }
    .rank-list {
      list-style: none;
      margin-top: 16px;
    }
    .rank-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 12px 0;
      border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    }
    .rank-item:last-child {
      border-bottom: none;
    }
    .rank-index {
      font-size: 14px;
      font-weight: 800;
      color: var(--primary-start);
      min-width: 20px;
    }

    /* 板块 11: 隐私合规与安全审计 */
    .security-banner {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .security-check-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .security-check-item {
      display: flex;
      align-items: center;
      gap:10px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

    /* 板块 12: 底部收口行动转化区 */
    .cta-glow-card {
      position: relative;
      background: var(--gradient-main);
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      color: #FFFFFF;
      text-align: center;
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }
    .cta-glow-card::before {
      content: "";
      position: absolute;
      top: -50%;
      left: -20%;
      width: 140%;
      height: 200%;
      background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 60%);
      pointer-events: none;
    }
    .cta-h2 {
      font-size: 36px;
      font-weight: 900;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .cta-desc {
      font-size: 16px;
      color: rgba(255, 255, 255, 0.9);
      max-width: 600px;
      margin: 0 auto 32px;
      line-height: 1.8;
    }
    .cta-form {
      display: flex;
      justify-content: center;
      gap: 12px;
      max-width: 520px;
      margin: 0 auto;
      flex-wrap: wrap;
    }
    .cta-input {
      flex: 1;
      min-width: 240px;
      padding: 14px 20px;
      border-radius: var(--radius-pill);
      border: 1px solid rgba(255, 255, 255, 0.3);
      background: rgba(255, 255, 255, 0.95);
      color: var(--text-main);
      font-size: 14px;
      outline: none;
    }
    .cta-input:focus {
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.4);
    }
    .btn-cta-submit {
      padding: 14px 28px;
      border-radius: var(--radius-pill);
      background: #0F172A;
      color: #FFFFFF;
      font-size: 14px;
      font-weight: 700;
      border: none;
      cursor: pointer;
      transition: var(--transition-fast);
    }
    .btn-cta-submit:hover {
      background: #1E293B;
      transform: translateY(-2px);
    }

    /* 全局页脚 */
    .site-footer {
      background: #0F172A;
      color: #94A3B8;
      padding: 70px 0 30px;
      margin-top: 80px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand .brand-logo {
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.8;
      max-width: 320px;
      color: #64748B;
    }
    .footer-title {
      font-size: 15px;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 26px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: #64748B;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stage-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
      }
      .price-card.featured {
        transform: none;
      }
      .channel-matrix {
        grid-template-columns: repeat(2, 1fr);
      }
      .review-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cms-feed-layout {
        grid-template-columns: 1fr;
      }
      .security-banner {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .grid-3 {
        grid-template-columns: 1fr;
      }
      .scenario-grid {
        grid-template-columns: 1fr;
      }
      .channel-matrix {
        grid-template-columns: 1fr;
      }
      .review-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .feed-card {
        grid-template-columns: 1fr;
      }
      .feed-cover {
        height: 180px;
      }
      .security-check-grid {
        grid-template-columns: 1fr;
      }
      .countdown-flex {
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .cta-h2 {
        font-size: 26px;
      }
    }

/* roulang page: article */
:root {
      --primary-start: #6366F1;
      --primary-mid: #8B5CF6;
      --primary-end: #EC4899;
      --gradient-main: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
      --gradient-soft: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(236, 72, 153, 0.08) 100%);
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-sub: #64748B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: rgba(226, 232, 240, 0.9);
      --border-focus: #6366F1;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(99, 102, 241, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 20px 35px -8px rgba(99, 102, 241, 0.15);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-pill: 9999px;
      --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-fast);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition-fast);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--gradient-main);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 20px;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
      position: relative;
      padding: 8px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary-start);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 3px;
      border-radius: 3px;
      background: var(--gradient-main);
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn-outline {
      padding: 9px 18px;
      font-size: 14px;
      font-weight: 600;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-pill);
      background: #fff;
      color: var(--text-muted);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-outline:hover {
      border-color: var(--primary-start);
      color: var(--primary-start);
    }
    .btn-primary {
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-pill);
      background: var(--gradient-main);
      color: #fff;
      box-shadow: 0 6px 16px rgba(99, 102, 241, 0.28);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(236, 72, 153, 0.32);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
    }
    .pill-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 14px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 600;
      background: var(--gradient-soft);
      color: var(--primary-start);
      border: 1px solid rgba(99, 102, 241, 0.18);
    }
    .pill-badge-green {
      background: rgba(16, 185, 129, 0.1);
      color: #059669;
      border-color: rgba(16, 185, 129, 0.2);
    }
    .pill-badge-amber {
      background: rgba(245, 158, 11, 0.1);
      color: #D97706;
      border-color: rgba(245, 158, 11, 0.2);
    }
    .base-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      transition: var(--transition-fast);
      overflow: hidden;
    }
    .base-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(99, 102, 241, 0.25);
    }
    .article-wrap {
      padding: 40px 0 80px;
    }
    .breadcrumb-nav {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--text-sub);
      margin-bottom: 24px;
      flex-wrap: wrap;
    }
    .breadcrumb-nav a:hover {
      color: var(--primary-start);
    }
    .breadcrumb-separator {
      color: #CBD5E1;
    }
    .article-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 340px;
      gap: 40px;
      align-items: start;
    }
    .article-main-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 44px;
    }
    .article-header {
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 28px;
      margin-bottom: 36px;
    }
    .article-meta-tags {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 18px;
      flex-wrap: wrap;
    }
    .article-h1 {
      font-size: 34px;
      font-weight: 900;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .article-meta-info {
      display: flex;
      align-items: center;
      gap: 20px;
      font-size: 14px;
      color: var(--text-sub);
      flex-wrap: wrap;
    }
    .article-meta-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .prose-content {
      font-size: 16px;
      color: #334155;
      line-height: 1.9;
    }
    .prose-content h2 {
      font-size: 24px;
      font-weight: 800;
      color: var(--text-main);
      margin-top: 36px;
      margin-bottom: 18px;
      padding-bottom: 8px;
      border-bottom: 2px solid #F1F5F9;
      position: relative;
    }
    .prose-content h2::before {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 48px;
      height: 2px;
      background: var(--gradient-main);
    }
    .prose-content h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-top: 28px;
      margin-bottom: 14px;
    }
    .prose-content p {
      margin-bottom: 22px;
      text-align: justify;
    }
    .prose-content ul, .prose-content ol {
      margin-bottom: 22px;
      padding-left: 24px;
    }
    .prose-content li {
      margin-bottom: 8px;
    }
    .prose-content img {
      border-radius: var(--radius-md);
      margin: 28px 0;
      box-shadow: var(--shadow-sm);
    }
    .prose-content blockquote {
      margin: 28px 0;
      padding: 20px 24px;
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
      border-left: 4px solid var(--primary-start);
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      font-size: 16px;
      color: var(--text-muted);
      font-style: italic;
    }
    .pull-quote-card {
      margin-top: 40px;
      padding: 24px 28px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.04) 0%, rgba(236, 72, 153, 0.04) 100%);
      border: 1px solid rgba(99, 102, 241, 0.16);
      display: flex;
      gap: 18px;
      align-items: flex-start;
    }
    .quote-icon {
      font-size: 32px;
      line-height: 1;
      color: var(--primary-start);
      flex-shrink: 0;
    }
    .quote-body h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .quote-body p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 0;
      line-height: 1.7;
    }
    .article-disclaimer {
      margin-top: 36px;
      padding: 20px 24px;
      background: #F8FAFC;
      border-radius: var(--radius-md);
      border: 1px dashed var(--border-color);
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.8;
    }
    .article-nav-pager {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 36px;
      padding-top: 28px;
      border-top: 1px solid var(--border-color);
    }
    .pager-box {
      padding: 18px 20px;
      border-radius: var(--radius-md);
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      transition: var(--transition-fast);
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .pager-box:hover {
      border-color: var(--primary-start);
      background: #FFFFFF;
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }
    .pager-box .pager-label {
      font-size: 12px;
      font-weight: 600;
      color: var(--text-sub);
    }
    .pager-box .pager-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .sidebar-block {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 28px;
      margin-bottom: 30px;
    }
    .sidebar-heading {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 18px;
      padding-bottom: 12px;
      border-bottom: 2px solid #F1F5F9;
      position: relative;
    }
    .sidebar-heading::before {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 36px;
      height: 2px;
      background: var(--gradient-main);
    }
    .platform-mini-card {
      text-align: center;
      padding: 16px 0 10px;
    }
    .platform-mini-card .brand-icon {
      margin: 0 auto 16px;
      width: 54px;
      height: 54px;
      font-size: 24px;
    }
    .sidebar-post-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .sidebar-post-item a {
      display: flex;
      gap: 14px;
      align-items: center;
    }
    .sidebar-post-thumb {
      width: 72px;
      height: 72px;
      border-radius: var(--radius-sm);
      object-fit: cover;
      flex-shrink: 0;
    }
    .sidebar-post-info {
      flex: 1;
      min-width: 0;
    }
    .sidebar-post-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.45;
      margin-bottom: 6px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .sidebar-post-title:hover {
      color: var(--primary-start);
    }
    .sidebar-post-date {
      font-size: 12px;
      color: var(--text-sub);
    }
    .channel-tag-group {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .channel-tag {
      padding: 6px 14px;
      background: #F1F5F9;
      border-radius: var(--radius-pill);
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
      transition: var(--transition-fast);
    }
    .channel-tag:hover {
      background: var(--gradient-main);
      color: #FFFFFF;
    }
    .empty-state-box {
      text-align: center;
      padding: 60px 20px;
    }
    .empty-state-icon {
      width: 64px;
      height: 64px;
      border-radius: 50%;
      background: #F1F5F9;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
      font-size: 28px;
      color: var(--text-sub);
    }
    .site-footer {
      background: #0B0F19;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      margin-top: 18px;
      max-width: 320px;
      color: #94A3B8;
    }
    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links a {
      font-size: 14px;
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #64748B;
      flex-wrap: wrap;
      gap: 16px;
    }
    @media (max-width: 1024px) {
      .article-layout {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
      }
    }
    @media (max-width: 768px) {
      .nav-menu, .nav-cta {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .article-main-card {
        padding: 24px 18px;
      }
      .article-h1 {
        font-size: 26px;
      }
      .article-nav-pager {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

/* roulang page: category1 */
:root {
      --primary-start: #6366F1;
      --primary-mid: #8B5CF6;
      --primary-end: #EC4899;
      --gradient-main: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
      --gradient-soft: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(236, 72, 153, 0.08) 100%);
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-sub: #64748B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: rgba(226, 232, 240, 0.9);
      --border-focus: #6366F1;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(99, 102, 241, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 20px 35px -8px rgba(99, 102, 241, 0.15);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-pill: 9999px;
      --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-fast);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition-fast);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--gradient-main);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 20px;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
      position: relative;
      padding: 8px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary-start);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 3px;
      border-radius: 3px;
      background: var(--gradient-main);
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn-outline {
      padding: 9px 18px;
      font-size: 14px;
      font-weight: 600;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-pill);
      background: #fff;
      color: var(--text-muted);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-outline:hover {
      border-color: var(--primary-start);
      color: var(--primary-start);
    }
    .btn-primary {
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-pill);
      background: var(--gradient-main);
      color: #fff;
      box-shadow: 0 6px 16px rgba(99, 102, 241, 0.28);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(236, 72, 153, 0.32);
      color: #fff;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
    }
    /* 通用基础组件 */
    .pill-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 14px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 600;
      background: var(--gradient-soft);
      color: var(--primary-start);
      border: 1px solid rgba(99, 102, 241, 0.18);
    }
    .pill-badge-green {
      background: rgba(16, 185, 129, 0.1);
      color: #059669;
      border-color: rgba(16, 185, 129, 0.2);
    }
    .pill-badge-amber {
      background: rgba(245, 158, 11, 0.1);
      color: #D97706;
      border-color: rgba(245, 158, 11, 0.2);
    }
    .section-head {
      margin-bottom: 36px;
    }
    .section-head.center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.35;
      margin-top: 10px;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .base-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      transition: var(--transition-fast);
      overflow: hidden;
    }
    .base-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(99, 102, 241, 0.25);
    }

    /* 板块 1: 分类专属头部对比选型 Hero */
    .cat-hero {
      position: relative;
      padding: 56px 0 64px;
      background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
      border-bottom: 1px solid var(--border-color);
    }
    .cat-breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-sub);
      margin-bottom: 20px;
    }
    .cat-breadcrumb a:hover {
      color: var(--primary-start);
    }
    .cat-hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 36px;
      align-items: center;
    }
    .cat-hero-h1 {
      font-size: 38px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin: 14px 0 16px;
    }
    .cat-hero-h1 span {
      background: var(--gradient-main);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-meta-strip {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 24px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .hero-meta-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-weight: 600;
    }
    .hero-compare-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 2px solid var(--primary-start);
      box-shadow: 0 16px 36px -10px rgba(99, 102, 241, 0.25);
      padding: 32px;
      position: relative;
    }
    .recommend-tag {
      position: absolute;
      top: -14px;
      right: 28px;
      background: var(--gradient-main);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      box-shadow: 0 4px 10px rgba(236, 72, 153, 0.35);
    }
    .compare-price-val {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin: 12px 0 16px;
    }
    .compare-feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-bottom: 24px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .compare-feature-list li {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .compare-feature-list li::before {
      content: "✓";
      color: #10B981;
      font-weight: 900;
    }

    /* 板块 2: 多维度即时筛选与状态栏 */
    .filter-section {
      padding: 24px 0;
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
    }
    .filter-wrapper {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .filter-group {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
    }
    .filter-btn {
      padding: 8px 18px;
      border-radius: var(--radius-pill);
      border: 1px solid var(--border-color);
      background: var(--bg-light);
      font-size: 14px;
      font-weight: 600;
      color: var(--text-muted);
      cursor: pointer;
      transition: var(--transition-fast);
    }
    .filter-btn:hover, .filter-btn.active {
      background: var(--gradient-main);
      color: #FFFFFF;
      border-color: transparent;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
    }
    .filter-status-text {
      font-size: 13px;
      color: var(--text-sub);
    }

    /* 板块 3: 主体网格卡片与资讯精选区 */
    .posts-section {
      padding: 64px 0 80px;
    }
    .posts-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .post-card {
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .post-thumb {
      height: 200px;
      overflow: hidden;
      position: relative;
      background: #E2E8F0;
    }
    .post-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .post-card:hover .post-thumb img {
      transform: scale(1.05);
    }
    .post-badge-pos {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 23, 42, 0.7);
      backdrop-filter: blur(4px);
      color: #fff;
      font-size: 11px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: var(--radius-pill);
    }
    .post-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .post-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 12px;
      color: var(--text-sub);
      margin-bottom: 10px;
    }
    .post-title {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.4;
      color: var(--text-main);
      margin-bottom: 10px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .post-title:hover {
      color: var(--primary-start);
    }
    .post-excerpt {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex-grow: 1;
    }
    .post-footer {
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .read-more-link {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-start);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .read-more-link:hover {
      color: var(--primary-end);
    }
    .empty-state {
      grid-column: 1 / -1;
      text-align: center;
      padding: 80px 20px;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px dashed var(--border-color);
    }

    /* 板块 4: 本周热门话题与社群讨论榜 */
    .topics-section {
      padding: 64px 0;
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .topics-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .topic-card {
      padding: 24px;
      border-radius: var(--radius-md);
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: flex-start;
      gap: 20px;
      transition: var(--transition-fast);
    }
    .topic-card:hover {
      background: #FFFFFF;
      border-color: rgba(99, 102, 241, 0.4);
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }
    .topic-rank {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: var(--gradient-soft);
      color: var(--primary-start);
      font-size: 20px;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .topic-content h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .topic-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 12px;
    }
    .topic-stats {
      display: flex;
      gap: 16px;
      font-size: 12px;
      color: var(--text-sub);
    }

    /* 板块 5: 社区安全互动公约指南 */
    .guideline-section {
      padding: 64px 0;
    }
    .guideline-box {
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
      border: 1px solid rgba(99, 102, 241, 0.2);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .guideline-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 20px;
    }
    .guideline-item:last-child {
      margin-bottom: 0;
    }
    .guideline-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #10B981;
      font-weight: 800;
      flex-shrink: 0;
      box-shadow: var(--shadow-sm);
    }
    .guideline-item h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .guideline-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 6: 社交破冰与常识答疑问答 (FAQ) */
    .faq-section {
      padding: 64px 0 80px;
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
    }
    .faq-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .faq-card {
      padding: 28px;
      background: var(--bg-light);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
    }
    .faq-card h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .faq-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 7: 分类专属轻量引导区 (CTA) */
    .cat-cta-section {
      padding: 60px 0 80px;
    }
    .cta-banner {
      background: var(--gradient-main);
      border-radius: var(--radius-lg);
      padding: 48px;
      color: #FFFFFF;
      text-align: center;
      box-shadow: 0 20px 40px -10px rgba(99, 102, 241, 0.4);
      position: relative;
      overflow: hidden;
    }
    .cta-banner h2 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .cta-banner p {
      font-size: 16px;
      opacity: 0.95;
      max-width: 640px;
      margin: 0 auto 28px;
      line-height: 1.7;
    }
    .cta-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
    }
    .btn-light {
      background: #FFFFFF;
      color: var(--text-main);
      padding: 12px 28px;
      font-size: 15px;
      font-weight: 700;
      border-radius: var(--radius-pill);
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
      border: none;
      cursor: pointer;
    }
    .btn-light:hover {
      background: #F8FAFC;
      transform: translateY(-2px);
    }
    .btn-trans {
      background: rgba(255, 255, 255, 0.18);
      border: 1px solid rgba(255, 255, 255, 0.4);
      color: #FFFFFF;
      padding: 12px 28px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-pill);
      backdrop-filter: blur(8px);
    }
    .btn-trans:hover {
      background: rgba(255, 255, 255, 0.28);
    }

    /* 页脚 */
    .site-footer {
      background: #0F172A;
      color: #CBD5E1;
      padding: 70px 0 30px;
      border-top: 1px solid #1E293B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      color: #94A3B8;
      margin-top: 16px;
      max-width: 320px;
    }
    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 14px;
    }
    .footer-links a {
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: #64748B;
      flex-wrap: wrap;
      gap: 16px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .cat-hero-grid {
        grid-template-columns: 1fr;
      }
      .posts-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .guideline-box {
        grid-template-columns: 1fr;
      }
      .faq-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .nav-menu, .nav-cta {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .cat-hero-h1 {
        font-size: 28px;
      }
      .posts-grid {
        grid-template-columns: 1fr;
      }
      .topics-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-actions {
        flex-direction: column;
      }
    }