/* roulang page: index */
:root {
      --primary: #1d4ed8;
      --primary-hover: #1e40af;
      --primary-light: #eff6ff;
      --accent-coral: #fb7185;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #94a3b8;
      --bg-page: #f8fafc;
      --bg-white: #ffffff;
      --bg-slate: #f1f5f9;
      --border-color: #e2e8f0;
      --border-focus: #93c5fd;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --transition: all 0.25s ease-in-out;
    }

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

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

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

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

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    .brand-logo .logo-badge {
      background: linear-gradient(135deg, #fb7185, #f43f5e);
      color: #fff;
      font-size: 13px;
      padding: 2px 8px;
      border-radius: var(--radius-full);
      font-weight: 600;
    }

    .nav-list {
      display: flex;
      list-style: none;
      align-items: center;
      gap: 28px;
    }

    .nav-link {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }

    .header-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: var(--primary);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      padding: 9px 20px;
      border-radius: var(--radius-full);
      box-shadow: 0 2px 4px rgba(29, 78, 216, 0.2);
    }

    .header-cta:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 4px 10px rgba(29, 78, 216, 0.3);
    }

    /* 斜切 Hero 品牌旗舰店 */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #2563eb 100%);
      color: #fff;
      padding: 90px 0 130px;
      clip-path: polygon(0 0, 100% 0, 100% calc(100% - 50px), 0 100%);
      overflow: hidden;
    }

    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-image: url('/assets/images/backpic/back-1.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.18;
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 860px;
      margin: 0 auto;
      text-align: center;
    }

    .hero-tagline {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.3);
      padding: 6px 18px;
      border-radius: var(--radius-full);
      font-size: 14px;
      margin-bottom: 24px;
      backdrop-filter: blur(4px);
    }

    .hero-title {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 16px;
      line-height: 1.8;
      color: #dbeafe;
      margin-bottom: 32px;
      text-align: left;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 13px 28px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: none;
      transition: var(--transition);
    }

    .btn-primary {
      background-color: var(--accent-coral);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(251, 113, 133, 0.4);
    }

    .btn-primary:hover {
      background-color: #f43f5e;
      transform: translateY(-2px);
    }

    .btn-secondary {
      background-color: rgba(255, 255, 255, 0.15);
      color: #ffffff;
      border: 1px solid rgba(255, 255, 255, 0.4);
    }

    .btn-secondary:hover {
      background-color: rgba(255, 255, 255, 0.25);
    }

    /* Hero 系列导航条叠加 */
    .hero-category-bar {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 18px 24px;
      box-shadow: var(--shadow-lg);
      display: flex;
      justify-content: space-around;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
      color: var(--text-main);
    }

    .cat-bar-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      font-weight: 600;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .cat-bar-item:hover {
      background-color: var(--primary-light);
      color: var(--primary);
    }

    .cat-bar-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--accent-coral);
    }

    /* 全局板块基础 */
    .section-block {
      padding: 72px 0;
    }

    .section-alt {
      background-color: var(--bg-slate);
    }

    .section-head {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 48px;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
      background: var(--primary-light);
      padding: 3px 12px;
      border-radius: var(--radius-full);
    }

    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 网格与卡片通用 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      border-color: var(--border-focus);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    /* 板块 1: 学习目标 (选品标准体系) */
    .target-card {
      position: relative;
      border-left: 4px solid var(--primary);
    }

    .target-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      opacity: 0.25;
      position: absolute;
      top: 16px;
      right: 20px;
    }

    .target-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .target-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 2: 课程路径 (测评进阶分层) */
    .path-step-card {
      text-align: center;
      padding: 30px 20px;
    }

    .path-badge {
      display: inline-block;
      width: 44px;
      height: 44px;
      line-height: 44px;
      background: var(--primary);
      color: #fff;
      border-radius: 50%;
      font-weight: 700;
      font-size: 18px;
      margin-bottom: 16px;
    }

    .path-step-card h3 {
      font-size: 17px;
      margin-bottom: 10px;
    }

    .path-step-card p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 板块 3: 进度模块 (质检节点推进) */
    .progress-bar-wrap {
      background: #e2e8f0;
      height: 8px;
      border-radius: var(--radius-full);
      overflow: hidden;
      margin: 12px 0 16px;
    }

    .progress-bar-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--primary), var(--accent-coral));
      border-radius: var(--radius-full);
    }

    /* 板块 4: 成果墙 (热榜实测数据验证) */
    .result-stat-card {
      text-align: center;
      padding: 32px 20px;
      background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    }

    .stat-number {
      font-size: 38px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .stat-label {
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .stat-sub {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块 5: 竖屏种草 (移动端卡片流) */
    .vertical-card {
      border-radius: var(--radius-md);
      overflow: hidden;
      padding: 0;
    }

    .vertical-img-wrap {
      position: relative;
      height: 220px;
      overflow: hidden;
    }

    .vertical-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .vertical-card:hover .vertical-img-wrap img {
      transform: scale(1.05);
    }

    .vertical-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(15, 23, 42, 0.75);
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      padding: 3px 10px;
      border-radius: var(--radius-full);
      backdrop-filter: blur(4px);
    }

    .vertical-info {
      padding: 18px;
    }

    .vertical-info h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .vertical-info p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 14px;
    }

    .vertical-action {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid var(--border-color);
      padding-top: 12px;
    }

    .score-badge {
      color: #f59e0b;
      font-weight: 700;
      font-size: 14px;
    }

    /* 板块 6: 价格与参数对比表 */
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .compare-table th {
      background-color: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .highlight-col {
      background-color: var(--primary-light);
      font-weight: 600;
      color: var(--primary);
    }

    /* 板块 7: 行业生活场景卡 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .scene-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #fff;
    }

    .scene-media {
      height: 160px;
      overflow: hidden;
    }

    .scene-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .scene-body {
      padding: 20px;
    }

    .scene-body h3 {
      font-size: 17px;
      margin-bottom: 8px;
    }

    .scene-body p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 板块 8: 观点解读卡片 */
    .opinion-card {
      background: #fff;
      border-left: 4px solid var(--accent-coral);
      padding: 24px;
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      box-shadow: var(--shadow-sm);
    }

    .opinion-quote {
      font-size: 15px;
      font-style: italic;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.7;
    }

    .opinion-author {
      font-size: 13px;
      color: var(--text-light);
      font-weight: 600;
    }

    /* 板块 9: 资讯列表 */
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .news-item {
      display: flex;
      gap: 20px;
      align-items: center;
      background: #fff;
      padding: 16px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .news-item:hover {
      border-color: var(--border-focus);
      box-shadow: var(--shadow-sm);
    }

    .news-thumb {
      width: 120px;
      height: 80px;
      border-radius: var(--radius-sm);
      object-fit: cover;
      flex-shrink: 0;
    }

    .news-content {
      flex: 1;
    }

    .news-meta {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 6px;
    }

    .news-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .news-title:hover {
      color: var(--primary);
    }

    .news-summary {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块 10: 会员权益卡片 */
    .member-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .member-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      border: 1px solid var(--border-color);
    }

    .member-icon {
      font-size: 28px;
      margin-bottom: 12px;
      color: var(--primary);
    }

    /* 板块 11: 更新订阅日历 */
    .calendar-band {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
    }

    .calendar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .calendar-node {
      background: var(--bg-slate);
      padding: 16px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--primary);
    }

    .node-date {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .node-title {
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .node-desc {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 12: 唯一强收口行动 CTA */
    .final-cta-section {
      background: linear-gradient(135deg, #1e3a8a, #0f172a);
      color: #fff;
      padding: 80px 0;
      text-align: center;
    }

    .final-cta-content {
      max-width: 680px;
      margin: 0 auto;
    }

    .final-cta-title {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .final-cta-desc {
      font-size: 16px;
      color: #cbd5e1;
      margin-bottom: 32px;
      line-height: 1.7;
    }

    /* 页脚 */
    .site-footer {
      background-color: #0b1120;
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 14px;
      border-top: 1px solid #1e293b;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-logo {
      font-size: 22px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 14px;
    }

    .footer-desc {
      line-height: 1.7;
      margin-bottom: 16px;
      font-size: 13px;
    }

    .footer-heading {
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a:hover {
      color: #fff;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* 移动端与平板响应式适配 */
    @media (max-width: 1024px) {
      .grid-4, .member-grid, .calendar-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .scene-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 30px;
      }
      .section-title {
        font-size: 24px;
      }
      .grid-3, .grid-4, .scene-grid, .member-grid, .calendar-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .news-item {
        flex-direction: column;
        align-items: flex-start;
      }
      .news-thumb {
        width: 100%;
        height: 140px;
      }
      .compare-table {
        display: block;
        overflow-x: auto;
      }
      .hero-category-bar {
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-list {
        display: none;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }