/* 課題の解決策セクション */
.treatment-section {
  background-color: #202020;
  padding: 0;
  height: 900px;
  display: flex;
  overflow: hidden;
}

.treatment-section .container {
  width: 1440px;
  padding: 100px 0 0;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.treatment-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* タイトル「課題の解決策」 */
.treatment-section .section-title {
  width: 610px;
  color: #fff;
  margin: 0 0 30px;
}

.treatment-content {
  width: 1028px;
  z-index: 2;
  margin-bottom: 0;
}

.treatment-description {
  font-family: 'Hiragino Sans', sans-serif;
  font-weight: 700;
  font-size: 36px;
  line-height: 1.3;
  letter-spacing: 0.05em;
  color: #fff;
  margin: 0;
}

/* 背景画像 */
.treatment-bg-image-mask {
  width: 100%;
  height: 463px;
}

.treatment-bg-image {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 463px;
  z-index: 999;
}

.treatment-bg-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* レスポンシブ対応 */
@media (max-width: 1440px) {
  .treatment-section {
    height: auto;
    min-height: 600px;
  }

  .treatment-section .container {
    width: 100%;
    padding: 80px 30px;
  }

  .treatment-section .section-title {
    width: 100%;
    margin-bottom: 40px;
  }

  .treatment-content {
    width: 100%;
    max-width: 1028px;
    margin-bottom: 50px;
  }

  .treatment-description {
    font-size: 28px;
  }

  .treatment-bg-image-mask {
    display: none;
  }

  .treatment-bg-image {
    position: relative;
    bottom: auto;
    height: 300px;
  }
}

@media (max-width: 768px) {
  .treatment-section {
    min-height: 300px;
  }

  .treatment-section .container {
    padding: 60px 20px;
  }

  .treatment-section .section-title {
    font-size: 20px;
    margin-bottom: 30px;
  }

  .treatment-content {
    margin-bottom: 40px;
  }

  .treatment-description {
    font-size: 20px;
  }

  .treatment-bg-image-mask {
    display: none;
  }

  .treatment-bg-image {
    height: 250px;
  }
}