/* 主な特徴や機能セクション */
.features-section {
  background-color: #fff;
  padding: 0;
  height: 900px;
  display: flex;
  justify-content: center;
  overflow: hidden;
}

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

/* タイトル「主な特徴や機能」 */
.features-section .section-title {
  width: 610px;
  font-family: 'Hiragino Sans', sans-serif;
  font-weight: 800;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: #2c2c2c;
  text-align: center;
  margin: 40px auto 30px;
}

/* グリッドレイアウト */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 400px);
  gap: 20px;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
}

/* カード */
.feature-card {
  width: 400px;
  height: 649px;
  background-color: #f9f9f9;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  overflow: hidden;
}

/* 画像 */
.feature-image {
  width: 100%;
  height: 300px;
  overflow: hidden;
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* タイトル */
.feature-title {
  font-family: 'Hiragino Sans', sans-serif;
  font-weight: 800;
  font-size: 40px;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: #2c2c2c;
  width: 100%;
  margin: 50px 0;
  text-align: center;
}

/* 説明文 */
.feature-description {
  font-family: 'Hiragino Sans', sans-serif;
  font-weight: 700;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: #8c8c8c;
  margin: 0;
  padding: 0 40px 30px;
  width: 100%;
}

/* レスポンシブ対応 */
@media (max-width: 1440px) {
  .features-section {
    height: auto;
    padding: 80px 0;
    overflow: visible;
  }

  .features-section .container {
    width: 100%;
    padding: 0 30px;
  }

  .features-section .section-title {
    width: 100%;
    margin-top: 0;
    margin-bottom: 40px;
  }

  .features-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 100%;
  }

  .feature-card {
    width: 100%;
    height: auto;
    padding: 0;
  }

  .feature-card h3,
  .feature-card p {
    padding: 0 20px;
  }

  .feature-card h3 {
    padding-top: 25px;
  }

  .feature-image {
    width: 100%;
    height: auto;
    aspect-ratio: 398 / 300;
  }
}

@media (max-width: 768px) {
  .features-section {
    padding: 60px 0;
  }

  .features-section .container {
    padding: 0 20px;
  }

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

  .features-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .feature-card {
    padding: 0;
  }

  .feature-card h3,
  .feature-card p {
    padding: 0 20px;
  }

  .feature-card h3 {
    padding-top: 20px;
  }

  .feature-image {
    margin-bottom: 0;
  }

  .feature-title {
    font-size: 28px;
    margin-bottom: 20px;
  }

  .feature-description {
    font-size: 14px;
  }
}