/* ===============================
   自主研发 OEM / ODM 板块
   =============================== */
.blue-block {
  background: #005ea6;
  padding: 30px 0 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* 标题 */
.blue-title {
  text-align: center;
  color: #fff;
  margin-bottom: 0;
  padding-bottom: 20px;
  position: relative;
  z-index: 2;
}

.line-main {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 8px;
}

.line-sub {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: 30px;
}

/* 白色微椭圆容器（核心） */
.white-card {
  background: #fff;
  border-radius: 20px;

  box-shadow: 0 20px 10px rgba(0, 0, 0, 0.18);

  width: calc(80% + 80px);
  margin: 0 -30px -20px;
  padding: 20px;

  display: flex;
  justify-content: space-between;
  gap: 0;

  position: relative;
  z-index: 1;
}

/* 图片 */
.white-card img {
  width: 32%;
  height: auto;
  border-radius: 6px;
  object-fit: cover;
  display: block;
}

/* ===============================
   移动端适配（核心）
   =============================== */
@media (max-width: 768px) {

  .blue-block {
    padding: 40px 15px 60px;
  }

  .white-card {
    width: 100%;
    margin: 0 0 -30px;

    /* ✅ 改成竖排 */
    flex-direction: column;
    align-items: center;

    padding: 15px;
    gap: 12px;
  }

  .white-card img {
    width: 100%;
    max-width: 100%;
  }

  .line-main {
    font-size: 22px;
  }

  .line-sub {
    font-size: 14px;
  }
}