.about .r p {
  font-size: 16px;
  line-height: 35px;
  text-indent: 2rem;
}

.about_box {
  padding: 100px 0 120px 0;
  background-image: url(../image/about/背景\ \(28\).png);
  background-position: center center;
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.about .l,
.about .r {
  width: 46%;
}

.about .l {
  flex-direction: column;
}

.about .l h4 {
  font-weight: bold;
}

.about .l .p_box img {
  display: block;
  max-width: 100%;
}

@media screen and (max-width: 1680px) {
  .about .l h4 {
    font-size: 28px;
  }

  .about .l p {
    font-size: 14px;
  }

  .about .r p {
    font-size: 14px;
    line-height: 30px;
  }

  .about_box {
    padding: 90px 0 110px 0;
  }
}

@media screen and (max-width: 1600px) {
  .about .l h4 {
    font-size: 26px;
  }

  /* 
  .about .r p {
    line-height: 25px;
  } */

  .about_box {
    padding: 80px 0 100px 0;
  }
}

@media screen and (max-width: 1440px) {
  .about .l h4 {
    font-size: 24px;
  }

  /* .about .r p {
    line-height: 20px;
  } */

  .about_box {
    padding: 70px 0 90px 0;
  }
}

@media screen and (max-width: 1366px) {
  .about .l h4 {
    font-size: 22px;
  }

  .about_box {
    padding: 60px 0 80px 0;
  }

  .about .r p {
    font-size: 14px;
    line-height: 25px;
  }
}

@media screen and (max-width: 1280px) {
  .about .l h4 {
    font-size: 20px;
  }

  .about_box {
    padding: 50px 0 70px 0;
  }
}

@media screen and (max-width: 1024px) {
  .about .l h4 {
    font-size: 18px;
  }

  .about_box {
    padding: 40px 0 60px 0;
  }
}

@media screen and (max-width: 980px) {
  .about .r p {
    line-height: 1.5;
  }

  .about .l h4 {
    font-size: 16px;
  }

  .about_box {
    padding: 30px 0 50px 0;
  }

  .about .l,
  .about .r {
    width: 100%;
  }

  .about {
    flex-wrap: wrap;
  }

  .about .l .p_box img {
    margin: 15px auto;
  }
}

@media screen and (max-width: 768px) {
  .about .r p {
    line-height: 1.3;
  }


  .about_box {
    padding: 20px 0 40px 0;
  }
}

@media screen and (max-width: 640px) {
  .about_box {
    padding: 15px 0 30px 0;
  }
}

@media screen and (max-width: 375px) {
  .about_box {
    padding: 15px 0 20px 0;
  }
}