/* 总：顶部三方案并列 */
    .overview {
      display: flex;
      justify-content: center;
      gap: 30px;
      padding: 80px 20px 60px;
      flex-wrap: wrap;
    }
    .ov-card {
      flex: 1 1 300px;
      max-width: 360px;
      background: #fff;
      border-radius: 12px;
      padding: 40px 30px;
      text-align: center;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
      transition: transform 0.3s;
      position: relative;
      overflow: hidden;
    }
    .ov-card::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      width: 100%;
      height: 4px;
      background: var(--theme);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.4s;
    }
    .ov-card:hover {
      transform: translateY(-6px);
    }
    .ov-card:hover::before {
      transform: scaleX(1);
    }
    .ov-icon {
      width: 60px;
      height: 60px;
      margin: 0 auto 20px;
    
      color: #fff;
      line-height: 60px;
      border-radius: 50%;
      font-size: 24px;
    }
    .ov-title {
      font-size: 22px;
      margin-bottom: 12px;
    }
    .ov-desc {
      font-size: 15px;
      color: #666;
    }

    /* 分：优势错行展示 */
    .detail {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px 60px;
    }
    .detail-block {
      display: flex;
      align-items: center;
      gap: 50px;
      margin-bottom: 80px;
      flex-wrap: wrap;
    }
    .detail-block:nth-child(even) {
      flex-direction: row-reverse;
    }
    .detail-img,
    .detail-txt {
      flex: 1 1 420px;
    }
    .detail-img img {
      border-radius: 10px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    }
    .detail-txt h3 {
      font-size: 26px;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .detail-txt h3::before {
      content: "";
      width: 5px;
      height: 22px;
      background: var(--theme);
      border-radius: 3px;
    }
    /* 新增：英文标题样式 */
    .detail-txt .sub-en {
      font-size: 15px;
      color: #999;
      letter-spacing: 1px;
      margin-bottom: 15px;
    }
    .detail-txt p {
      margin-bottom: 15px;
      color: #555;
    }
    .detail-plus {
      list-style: none;
      margin-top: 20px;
    }
    .detail-plus li {
      padding: 8px 0 8px 24px;
      position: relative;
      font-size: 15px;
    }
    .detail-plus li::before {
      content: "■";
      position: absolute;
      left: 0;
      color: var(--theme);
      font-size: 12px;
    }

    /* 总：底部CTA */
    .cta {
      background: #fff;
      padding: 70px 20px;
      text-align: center;
      box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.04);
    }
    .cta h3 {
      font-size: 28px;
      margin-bottom: 15px;
    }
    .cta p {
      color: #666;
      margin-bottom: 30px;
    }
    .cta-btn {
      display: inline-block;
      padding: 14px 42px;
      background: var(--theme);
      color: #fff;
      border-radius: 30px;
      font-size: 16px;
      transition: background 0.3s;
    }
    .cta-btn:hover {
      background: #880000;
    }

    /* 响应式 */
    @media (max-width: 768px) {
      .overview {
        padding: 50px 15px;
      }
      .detail-block {
        gap: 30px;
        margin-bottom: 50px;
      }
      .detail-block:nth-child(even) {
        flex-direction: column;
      }
      .detail-img,
      .detail-txt {
        flex: 1 1 100%;
      }
    }