/* roulang page: index */
:root {
      --primary: #6366F1;
      --primary-hover: #4F46E5;
      --accent: #EC4899;
      --accent-hover: #DB2777;
      --bg-dark: #0F172A;
      --bg-slate: #1E293B;
      --bg-light: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --text-soft: #94A3B8;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 32px;
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(99, 102, 241, 0.1);
      --shadow-lg: 0 20px 35px -8px rgba(15, 23, 42, 0.12);
      --font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: var(--font-family);
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

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

    button, input, select, textarea {
      font-family: inherit;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部导航系统 */
    .top-announcement-bar {
      background-color: var(--bg-dark);
      color: #CBD5E1;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-announcement-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }
    .status-pulse-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse-ring 1.8s infinite;
    }
    @keyframes pulse-ring {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }

    .main-navbar {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.03);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--bg-dark);
      letter-spacing: -0.5px;
    }
    .brand-logo-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn-capsule {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 24px;
      border-radius: 9999px;
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      border: none;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .btn-gradient-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      color: #FFFFFF;
      box-shadow: 0 6px 18px rgba(99, 102, 241, 0.35);
    }
    .btn-gradient-primary:hover {
      box-shadow: 0 8px 22px rgba(236, 72, 153, 0.45);
      transform: translateY(-2px);
      color: #FFFFFF;
    }
    .btn-ghost {
      background: rgba(99, 102, 241, 0.08);
      color: var(--primary);
      border: 1px solid rgba(99, 102, 241, 0.2);
    }
    .btn-ghost:hover {
      background: rgba(99, 102, 241, 0.15);
      color: var(--primary-hover);
    }

    /* 移动端菜单按钮 */
    .mobile-nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 8px;
    }

    /* 通用板块与排版系统 */
    .section-block {
      padding: 96px 0;
      position: relative;
    }
    .section-block-white {
      background-color: #FFFFFF;
    }
    .section-block-slate {
      background-color: #F1F5F9;
    }
    .section-block-dark {
      background-color: var(--bg-dark);
      color: #F8FAFC;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 56px;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: 9999px;
      background: rgba(99, 102, 241, 0.1);
      border: 1px solid rgba(99, 102, 241, 0.25);
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    .section-badge-dark {
      background: rgba(236, 72, 153, 0.15);
      border-color: rgba(236, 72, 153, 0.35);
      color: #F472B6;
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 16px;
    }
    .section-lead {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .section-lead-dark {
      color: #94A3B8;
    }

    /* 1. Hero 拼团转化与大厅 */
    .hero-section {
      background: linear-gradient(180deg, #F8FAFC 0%, #EEF2FF 100%), url('/assets/images/a74e89deaaf2d554.png') center/cover no-repeat;
      padding: 80px 0 96px;
      position: relative;
      overflow: hidden;
    }
    .hero-wrapper {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .hero-text-content {
      position: relative;
      z-index: 2;
    }
    .hero-h1 {
      font-size: 3.2rem;
      font-weight: 900;
      line-height: 1.18;
      margin-bottom: 24px;
      color: var(--bg-dark);
      letter-spacing: -1px;
    }
    .hero-h1 span.gradient-word {
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.1rem;
      line-height: 1.85;
      color: #475569;
      margin-bottom: 32px;
    }
    .group-status-banner {
      background: #FFFFFF;
      border: 1px solid rgba(99, 102, 241, 0.2);
      border-radius: var(--radius-md);
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 32px;
      box-shadow: 0 10px 20px rgba(99, 102, 241, 0.06);
    }
    .group-avatar-stack {
      display: flex;
      align-items: center;
    }
    .avatar-item {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      border: 2px solid #FFFFFF;
      margin-left: -10px;
      background-color: #6366F1;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 0.75rem;
      font-weight: bold;
    }
    .avatar-item:first-child { margin-left: 0; }
    .avatar-item:nth-child(2) { background-color: #EC4899; }
    .avatar-item:nth-child(3) { background-color: #10B981; }
    .avatar-item:nth-child(4) { background-color: #F59E0B; }
    .group-info-text {
      font-size: 0.95rem;
      font-weight: 700;
      color: #1E293B;
    }
    .group-info-text strong {
      color: var(--accent);
      font-size: 1.15rem;
    }
    .hero-cta-btns {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-interactive-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      padding: 32px;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(226, 232, 240, 0.8);
      position: relative;
    }
    .interactive-card-badge {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 8px;
      background: #FEF3C7;
      color: #D97706;
      font-size: 0.8rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .group-progress-wrap {
      margin: 20px 0;
    }
    .progress-bar-bg {
      height: 10px;
      background: #E2E8F0;
      border-radius: 9999px;
      overflow: hidden;
    }
    .progress-bar-fill {
      height: 100%;
      width: 78%;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      border-radius: 9999px;
    }
    .progress-labels {
      display: flex;
      justify-content: space-between;
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-top: 8px;
    }

    /* 2. 卖点三连 */
    .feature-three-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-three-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .feature-three-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(99, 102, 241, 0.3);
    }
    .f3-icon {
      width: 58px;
      height: 58px;
      border-radius: 16px;
      background: rgba(99, 102, 241, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 20px;
    }
    .f3-card-title {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--bg-dark);
    }
    .f3-card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 3. 入口矩阵 */
    .entry-matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .entry-matrix-item {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .entry-matrix-item:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .entry-head {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 12px;
    }
    .entry-tag {
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 6px;
      background: #F1F5F9;
      color: #475569;
    }
    .entry-count {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
    }
    .entry-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .entry-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 4. 最新发布 (图文列表) */
    .latest-posts-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .post-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .post-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }
    .post-thumbnail-wrap {
      position: relative;
      height: 200px;
      overflow: hidden;
      background: #E2E8F0;
    }
    .post-thumbnail {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .post-card:hover .post-thumbnail {
      transform: scale(1.05);
    }
    .post-category-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(15, 23, 42, 0.75);
      backdrop-filter: blur(4px);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 6px;
    }
    .post-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .post-title {
      font-size: 1.18rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--bg-dark);
      line-height: 1.45;
    }
    .post-summary {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .post-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid #F1F5F9;
      padding-top: 12px;
      font-size: 0.8rem;
      color: var(--text-soft);
    }

    /* 5. 热门专题 (两栏非对称展示) */
    .special-topic-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .topic-big-card {
      background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
      color: #FFFFFF;
      border-radius: var(--radius-xl);
      padding: 40px;
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .topic-card-light {
      background: #FFFFFF;
      color: var(--bg-dark);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 40px;
    }
    .topic-badge {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 9999px;
      font-size: 0.8rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .topic-badge-hot {
      background: rgba(236, 72, 153, 0.2);
      color: #F472B6;
    }
    .topic-badge-star {
      background: rgba(99, 102, 241, 0.1);
      color: var(--primary);
    }
    .topic-title {
      font-size: 1.65rem;
      font-weight: 800;
      margin-bottom: 14px;
      line-height: 1.35;
    }
    .topic-desc {
      font-size: 0.96rem;
      line-height: 1.7;
      margin-bottom: 24px;
      opacity: 0.85;
    }
    .topic-items-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .topic-item-bullet {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.92rem;
    }
    .bullet-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent);
    }

    /* 6. 资讯列表与深度讨论 */
    .news-discussion-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .news-item-strip {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 24px 28px;
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      transition: all 0.25s ease;
    }
    .news-item-strip:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
      transform: translateX(4px);
    }
    .news-left {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .news-order {
      font-size: 1.5rem;
      font-weight: 900;
      color: #CBD5E1;
      width: 36px;
    }
    .news-item-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--bg-dark);
      margin-bottom: 6px;
    }
    .news-item-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .news-right-meta {
      display: flex;
      align-items: center;
      gap: 20px;
      white-space: nowrap;
    }
    .meta-stat {
      font-size: 0.85rem;
      color: var(--text-soft);
      font-weight: 600;
    }

    /* 7. 指标看板区 */
    .metrics-grid-four {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-badge-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      text-align: center;
      border: 1px solid rgba(99, 102, 241, 0.15);
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.05);
      position: relative;
    }
    .metric-number {
      font-size: 2.75rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 8px;
      letter-spacing: -1px;
    }
    .metric-label {
      font-size: 1rem;
      font-weight: 700;
      color: var(--bg-dark);
      margin-bottom: 6px;
    }
    .metric-sub {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 8. 现代化与传统对比区 */
    .comparison-table-wrap {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comparison-table th {
      padding: 20px 24px;
      background: #F8FAFC;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--bg-dark);
      border-bottom: 1px solid var(--border-color);
    }
    .comparison-table td {
      padding: 20px 24px;
      font-size: 0.92rem;
      border-bottom: 1px solid #F1F5F9;
      color: #475569;
    }
    .comparison-table tr:last-child td {
      border-bottom: none;
    }
    .col-highlight {
      background: rgba(99, 102, 241, 0.03);
      font-weight: 600;
      color: var(--primary) !important;
    }
    .table-tag-yes {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #10B981;
      font-weight: 700;
    }
    .table-tag-no {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #94A3B8;
    }

    /* 9. 深色理念与发展里程碑 */
    .timeline-milestones {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
    }
    .timeline-milestones::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: rgba(255, 255, 255, 0.15);
      transform: translateX(-50%);
    }
    .timeline-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 48px;
      position: relative;
    }
    .timeline-item:nth-child(even) {
      flex-direction: row-reverse;
    }
    .timeline-card {
      width: 44%;
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 24px;
    }
    .timeline-dot {
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: var(--accent);
      border: 4px solid var(--bg-dark);
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      z-index: 2;
    }
    .timeline-date {
      font-size: 0.85rem;
      font-weight: 800;
      color: #F472B6;
      margin-bottom: 6px;
    }
    .timeline-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: #FFFFFF;
    }
    .timeline-desc {
      font-size: 0.88rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 10. 用户故事与创作者说 */
    .creator-stories-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .creator-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s ease;
    }
    .creator-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: rgba(99, 102, 241, 0.3);
    }
    .creator-profile {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 18px;
    }
    .creator-avatar {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: #EEF2FF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 800;
      border: 2px solid var(--primary);
    }
    .creator-name {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--bg-dark);
    }
    .creator-title-sub {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .creator-quote {
      font-size: 0.92rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: normal;
    }
    .creator-data-strip {
      background: #F8FAFC;
      border-radius: var(--radius-sm);
      padding: 10px 14px;
      display: flex;
      justify-content: space-between;
      font-size: 0.82rem;
      color: var(--text-muted);
    }
    .creator-data-strip strong {
      color: var(--bg-dark);
    }

    /* 11. 用户口碑评价墙 */
    .review-bubble-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-bubble-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .review-bubble-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .review-star-row {
      color: #F59E0B;
      font-size: 0.95rem;
      margin-bottom: 12px;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 0.92rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .review-author-info {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 12. 快速解答与常见问题 */
    .faq-accordion-wrap {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      transition: border-color 0.25s ease;
    }
    .faq-item-box:hover {
      border-color: var(--primary);
    }
    .faq-question-btn {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--bg-dark);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-question-btn::after {
      content: '+';
      font-size: 1.35rem;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }
    .faq-item-box.open .faq-question-btn::after {
      transform: rotate(45deg);
      color: var(--primary);
    }
    .faq-answer-pane {
      display: none;
      padding: 0 24px 22px;
      font-size: 0.93rem;
      color: #475569;
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
    }
    .faq-item-box.open .faq-answer-pane {
      display: block;
    }

    /* 13. 终极转化表单与底部入口 */
    .convert-banner-card {
      background: linear-gradient(135deg, #4338CA 0%, #6366F1 50%, #EC4899 100%);
      border-radius: var(--radius-xl);
      padding: 64px 48px;
      color: #FFFFFF;
      box-shadow: 0 25px 50px -12px rgba(99, 102, 241, 0.4);
      position: relative;
      overflow: hidden;
    }
    .convert-grid {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .convert-title {
      font-size: 2.3rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 16px;
    }
    .convert-subtext {
      font-size: 1.05rem;
      line-height: 1.8;
      opacity: 0.92;
      margin-bottom: 24px;
    }
    .convert-form-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 32px;
      color: var(--bg-dark);
      box-shadow: var(--shadow-lg);
    }
    .form-group-item {
      margin-bottom: 18px;
    }
    .form-group-item label {
      display: block;
      font-size: 0.85rem;
      font-weight: 700;
      color: #334155;
      margin-bottom: 6px;
    }
    .form-input-ctrl {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-input-ctrl:focus {
      border-color: var(--primary);
    }
    .form-submit-btn {
      width: 100%;
      padding: 14px;
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      border: none;
      border-radius: 9999px;
      cursor: pointer;
      box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
      transition: all 0.25s ease;
    }
    .form-submit-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(236, 72, 153, 0.4);
    }

    /* 14. 页脚系统 */
    .site-footer {
      background-color: #0B1120;
      color: #94A3B8;
      padding: 72px 0 32px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
    }
    .footer-brand-desc {
      line-height: 1.8;
      margin-bottom: 20px;
      font-size: 0.88rem;
    }
    .footer-heading {
      font-size: 0.98rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links-list a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }
    .footer-bottom-line {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.82rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-wrapper {
        grid-template-columns: 1fr;
      }
      .entry-matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid-four {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links, .nav-actions .btn-ghost {
        display: none;
      }
      .mobile-nav-toggle {
        display: block;
      }
      .nav-links.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        gap: 16px;
      }
      .hero-h1 {
        font-size: 2.3rem;
      }
      .feature-three-grid,
      .latest-posts-grid,
      .special-topic-row,
      .creator-stories-grid,
      .review-bubble-grid,
      .convert-grid {
        grid-template-columns: 1fr;
      }
      .timeline-milestones::before {
        left: 20px;
      }
      .timeline-item, .timeline-item:nth-child(even) {
        flex-direction: column;
        align-items: flex-start;
      }
      .timeline-card {
        width: calc(100% - 48px);
        margin-left: 48px;
      }
      .timeline-dot {
        left: 20px;
      }
      .news-item-strip {
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .section-block {
        padding: 64px 0;
      }
    }