.about {
  position: relative;
  margin-bottom: 80px;
}

.about .section-title .en {
  font-size: clamp(28px, 5vw, 42px);
}

.about .section-title .sub {
  display: block;
  font-size: clamp(20px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.2;
  margin-top: 4px;
}

.about .box {
  position: relative;
  margin-top: 32px;
}

.about .est {
  margin-bottom: 24px;
}

.about .est img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
}

.about .txt-area {
  position: relative;
  z-index: 2;
}

.about .txt-area .jp-txt {
  font-size: clamp(13px, 1.1vw, 16px);
}

.about .txt-area .en-txt {
  font-size: clamp(12px, 1vw, 14px);
  margin-top: 16px;
}

@media screen and (min-width: 768px) {
  .about {
    margin-bottom: 120px;
  }

  .about .box {
    display: flex;
    gap: 48px;
    align-items: flex-start;
  }

  .about .est {
    flex: 0 0 30%;
    margin-bottom: 0;
  }

  .about .txt-area {
    flex: 1;
  }
}