/* roulang page: index */
:root {
      --primary: #1967d2;
      --primary-hover: #1557b0;
      --primary-light: #e8f0fe;
      --accent: #ff6f61;
      --accent-hover: #fa5243;
      --text-main: #1f2937;
      --text-sub: #4b5563;
      --text-muted: #6b7280;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --border-color: #e2e8f0;
      --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 12px rgba(25, 103, 210, 0.08);
      --shadow-lg: 0 10px 25px rgba(25, 103, 210, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --max-width: 1200px;
    }

    * {
      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;
      line-height: 1.6;
      color: var(--text-main);
      background-color: var(--bg-page);
      -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-sm);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 8px;
      letter-spacing: -0.5px;
    }
    .brand-badge {
      background: var(--primary-light);
      color: var(--primary);
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 20px;
      font-weight: 600;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-sub);
      padding: 6px 12px;
      border-radius: var(--radius-sm);
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .header-btn {
      background: var(--primary);
      color: #fff;
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      border: 1px solid var(--primary);
      cursor: pointer;
    }
    .header-btn:hover {
      background: var(--primary-hover);
      color: #fff;
    }

    /* 通用板块样式 */
    .section-block {
      padding: 70px 0;
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 45px auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 30px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* Hero裂变首屏 */
    .hero-section {
      background: linear-gradient(135deg, rgba(232, 240, 254, 0.75) 0%, rgba(255, 255, 255, 0.95) 100%), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
      padding: 80px 0 90px;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-wrapper {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 40px;
      font-weight: 800;
      line-height: 1.25;
      color: #0f172a;
      margin-bottom: 18px;
    }
    .hero-sub {
      font-size: 16px;
      color: var(--text-sub);
      margin-bottom: 28px;
      line-height: 1.75;
    }
    .hero-action-box {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 30px;
    }
    .btn-main {
      background: var(--accent);
      color: #fff;
      font-size: 16px;
      font-weight: 600;
      padding: 13px 28px;
      border-radius: var(--radius-md);
      box-shadow: 0 4px 14px rgba(255, 111, 97, 0.35);
      border: none;
      cursor: pointer;
    }
    .btn-main:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: #fff;
      color: var(--primary);
      font-size: 16px;
      font-weight: 600;
      padding: 13px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--primary);
      cursor: pointer;
    }
    .btn-outline:hover {
      background: var(--primary-light);
    }

    /* 裂变卡片 */
    .fission-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(25, 103, 210, 0.15);
      position: relative;
    }
    .fission-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .fission-tip {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .progress-box {
      margin-bottom: 20px;
    }
    .progress-labels {
      display: flex;
      justify-content: space-between;
      font-size: 13px;
      color: var(--text-sub);
      margin-bottom: 6px;
    }
    .progress-bar-bg {
      width: 100%;
      height: 12px;
      background: var(--bg-alt);
      border-radius: 6px;
      overflow: hidden;
    }
    .progress-bar-fill {
      width: 72%;
      height: 100%;
      background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
      border-radius: 6px;
    }
    .reward-steps {
      display: flex;
      justify-content: space-between;
      margin-top: 15px;
      text-align: center;
    }
    .step-item {
      flex: 1;
      font-size: 12px;
      color: var(--text-muted);
    }
    .step-item.active {
      color: var(--primary);
      font-weight: 600;
    }
    .reward-desc-box {
      background: var(--primary-light);
      padding: 12px 14px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: #1a56db;
      margin-top: 18px;
      line-height: 1.5;
    }

    /* 优惠券墙 */
    .coupon-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px;
    }
    .coupon-card {
      background: #ffffff;
      border: 1px dashed var(--accent);
      border-radius: var(--radius-md);
      padding: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: relative;
      background: linear-gradient(145deg, #ffffff 0%, #fff9f8 100%);
      box-shadow: var(--shadow-sm);
    }
    .coupon-value {
      font-size: 32px;
      font-weight: 800;
      color: var(--accent);
      line-height: 1;
    }
    .coupon-unit {
      font-size: 16px;
      font-weight: 600;
      margin-left: 2px;
    }
    .coupon-info h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .coupon-info p {
      font-size: 12px;
      color: var(--text-muted);
    }
    .btn-coupon {
      background: var(--accent);
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 20px;
      border: none;
      cursor: pointer;
    }
    .btn-coupon:hover {
      background: var(--accent-hover);
    }

    /* 卡片网格通用 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .base-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }
    .base-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: #cbd5e1;
    }
    .card-icon {
      width: 48px;
      height: 48px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .card-text {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.65;
    }

    /* 图文并茂行 */
    .media-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .media-card img {
      width: 100%;
      height: 190px;
      object-fit: cover;
    }
    .media-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .media-tag {
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .media-heading {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .media-text {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 14px;
    }
    .media-foot {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: var(--text-muted);
      border-top: 1px solid #f1f5f9;
      padding-top: 10px;
    }

    /* 阶梯规则/对比 */
    .ladder-table-box {
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .ladder-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .ladder-table th, .ladder-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .ladder-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .ladder-table tr:last-child td {
      border-bottom: none;
    }

    /* 成功路径步骤卡 */
    .step-path-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .path-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 22px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .path-idx {
      font-size: 32px;
      font-weight: 900;
      color: #e2e8f0;
      line-height: 1;
      margin-bottom: 10px;
    }
    .path-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .path-desc {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 常见卡住点对比 */
    .pain-vs-solution {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 25px;
    }
    .pvs-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 26px;
      border: 1px solid var(--border-color);
    }
    .pvs-card.pain {
      border-left: 4px solid #ef4444;
    }
    .pvs-card.solution {
      border-left: 4px solid #10b981;
    }
    .pvs-head {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .pvs-list {
      list-style: none;
    }
    .pvs-list li {
      position: relative;
      padding-left: 20px;
      margin-bottom: 12px;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
    }
    .pvs-list li::before {
      content: "•";
      position: absolute;
      left: 0;
      font-size: 18px;
      color: var(--primary);
    }

    /* 场景标签与生态保障 */
    .tags-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 25px;
    }
    .bubble-tag {
      background: #fff;
      border: 1px solid var(--border-color);
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 14px;
      color: var(--text-sub);
      box-shadow: var(--shadow-sm);
    }
    .bubble-tag:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    /* 资讯列表网格 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 22px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-brief {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 14px;
    }
    .news-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
    }

    /* 落地行动区 (CTA) */
    .cta-banner {
      background: linear-gradient(135deg, #1967d2 0%, #0d47a1 100%);
      color: #fff;
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      text-align: center;
      box-shadow: var(--shadow-lg);
    }
    .cta-title {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .cta-subtitle {
      font-size: 15px;
      color: #e0e7ff;
      max-width: 650px;
      margin: 0 auto 28px auto;
      line-height: 1.7;
    }
    .cta-btns {
      display: flex;
      justify-content: center;
      gap: 16px;
    }
    .cta-btn-white {
      background: #fff;
      color: var(--primary);
      padding: 12px 28px;
      border-radius: var(--radius-md);
      font-size: 15px;
      font-weight: 700;
    }
    .cta-btn-white:hover {
      background: #f1f5f9;
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-logo {
      font-size: 22px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 12px;
    }
    .footer-about {
      line-height: 1.7;
      font-size: 13px;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 25px;
      text-align: center;
      font-size: 13px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-wrapper {
        grid-template-columns: 1fr;
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-path-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-h1 {
        font-size: 30px;
      }
      .grid-3, .news-grid {
        grid-template-columns: 1fr;
      }
      .pain-vs-solution {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
      }
      .section-block {
        padding: 50px 0;
      }
      .section-title {
        font-size: 24px;
      }
    }

    @media (max-width: 520px) {
      .grid-4, .step-path-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-action-box {
        flex-direction: column;
      }
      .btn-main, .btn-outline {
        width: 100%;
        text-align: center;
      }
      .cta-btns {
        flex-direction: column;
      }
    }