@charset "utf-8";

/** ***************************************************************************
 * 共用
 * ************************************************************************* */

#main {
  padding-bottom: 60px;
}

#main :where(.section) ~ :where(.section) {
  margin-top: 60px;
}

#main :where(.column) ~ :where(.column) {
  margin-top: 30px;
}

@media screen and (min-width:768px) {

  #main {
    padding-bottom: 120px;
  }

  #main :where(.section) ~ :where(.section) {
    margin-top: 120px;
  }

  #main :where(.column) ~ :where(.column) {
    margin-top: 60px;
  }

}

/** ***************************************************************************
 * 紹介文
 * ************************************************************************* */

#lead {
  padding-top: 40px;
}

@media screen and (min-width:768px) {

  #lead {
    padding-top: 80px;
  }

}

/**
 * タイトル
 */

#lead .section-title {
  margin-bottom: 40px;
  line-height: 3;
  font-size: 0.75em;
  text-align: center;
}

@media screen and (min-width:768px) {

  #lead .section-title {
    margin-bottom: 80px;
  }

}

/**
 * 内容
 */

#lead div.content .catchcopy {
  width: 100%;
  margin-bottom: 3em;
  letter-spacing: 2px;
  line-height: 2.5;
  font-size: 1.25em;
  text-orientation: upright;
  writing-mode: vertical-rl;
  display: flex;
  align-items: center;
  justify-content: center;
}

#lead div.content .text {
  line-height: 2.5;
  font-weight: 300;
  text-align: center;
}

#lead div.content .text em {
  line-height: 1.3;
  font-size: 1.375em;
}

#lead div.content .text small {
  margin-top: 1.5em;
  line-height: 1.6;
  font-size: 0.75em;
  display: block;
}

@media screen and (min-width:768px) {

  #lead div.content {
    line-height: 3;
  }

}

/** ***************************************************************************
 * ウルトラファインバブルとは
 * ************************************************************************* */

#about {
  padding: 40px 0 60px;
  color: #fff;
  overflow: hidden;
  position: relative;
  z-index: 0;
}

#about::after {
  content: '';
  width: 100vw;
  height: 100%;
  background: url("../_image/ultrafinebubble/about-bg.jpg") right top / cover no-repeat;
  position: absolute;
  z-index: -1;
  top: 0;
  left: calc(50% - 50vw);
}

#about div.body {
  max-width: 1360px;
}

@media screen and (min-width:768px) {

  #about {
    padding: 80px 0 100px;
  }

}

/**
 * タイトル
 */

#about .section-title {
  margin-bottom: 1em;
  line-height: 2;
  font-size: 1.375em;
  text-align: center;
}

@media screen and (min-width:768px) {

  #about .section-title {
    font-size: 1.5em;
  }

}

/**
 * 内容
 */

#about div.content {
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  line-height: 2;
  text-align: justify;
  text-justify: inter-character;
}

#about div.content small {
  margin-top: 1.5em;
  line-height: 1.6;
  font-size: 0.75em;
  display: block;
}

@media screen and (min-width:768px) {

  #about div.content {
    font-size: 1.25em;
    text-align: center;
  }

}

/**
 * 比較例
 */

#about div.example div.item {
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

#about div.example div.item ~ div.item {
  margin-top: 40px;
}

@media screen and (min-width:768px) {

  #about div.example {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
  }

  #about div.example div.item {
    width: calc(100% / 3 - 5%);
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
  }

  #about div.example div.item ~ div.item {
    margin-top: 0;
  }

}

/* 画像 */

#about div.example div.item img {
  margin-bottom: 10px;
}

@media screen and (min-width:768px) {

  #about div.example div.item img {
    margin-bottom: 20px;
  }

}

/* タイトル */

#about div.example div.title {
  margin-bottom: 10px;
  line-height: 1.3;
  font-size: 1.125em;
}

@media screen and (min-width:768px) {

  #about div.example div.title {
    margin-bottom: 20px;
  }

}

/* 特徴 */

#about div.example div.feature {
  margin-bottom: 5px;
  padding: 0.25em 1em;
  color: #333;
  letter-spacing: 0;
  background-color: #fff;
}

@media screen and (min-width:768px) {

  #about div.example div.feature {
    margin-bottom: 10px;
  }

}

/* テキスト */

#about div.example div.text {
  letter-spacing: 0;
  text-align: justify;
  text-justify: inter-character;
}

/** ***************************************************************************
 * ウルトラファインバブルの特徴
 * ************************************************************************* */

#feature div.body {
  max-width: 1360px;
}

/**
 * タイトル
 */

#feature .section-title {
  margin-bottom: 20px;
  line-height: 3;
  font-size: 0.75em;
  text-align: center;
}

@media screen and (min-width:768px) {

  #feature .section-title {
    margin-bottom: 40px;
  }

}

/**
 * 紹介文
 */

#feature div.lead .catchcopy {
  letter-spacing: 2px;
  line-height: 2;
  font-size: 1.25em;
  text-align: center;
}

#feature div.lead .text {
  line-height: 2.5;
  text-align: center;
}

@media screen and (min-width:768px) {

  #feature div.lead .catchcopy {
    font-size: 1.5em;
  }

}

/**
 * 特徴 共用
 */

@media screen and (min-width:768px) {

  #feature .feature-contents div.contents {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

}

/* タイトル */

#feature .column-title {
  margin-bottom: 25px;
  padding: 0.375em 1em 0.5em;
  color: #fff;
  font-size: 1.25em;
  font-weight: 500;
  text-align: center;
  background: url("../_image/ultrafinebubble/title-bg.jpg") center center / cover no-repeat;
}

@media screen and (min-width:768px) {

  #feature .column-title {
    margin-bottom: 50px;
    font-size: 1.625em;
  }

}

/* 画像 */

#feature .feature-contents div.image {
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 20px;
}

#feature .feature-contents div.image div.caption {
  font-size: 0.625em;
  text-align: right;
}

@media screen and (min-width:768px) {

  #feature .feature-contents div.image {
    margin-bottom: 30px;
  }

  /* 横2カラム */

  #feature .feature-contents div.contents div.image {
    width: 44%;
    margin: 0;
    align-self: flex-start;
  }

  #feature .feature-contents div.contents div.image img {
    width: 100%;
  }

}

/* 内容 */

#feature .feature-contents div.content {
  line-height: 2;
  text-align: justify;
  text-justify: inter-character;
}

#feature .feature-contents div.content .catchcopy {
  font-size: 1.25em;
  font-weight: 500;
}

@media screen and (min-width:768px) {

  #feature .feature-contents div.content {
    text-align: center;
  }

  #feature .feature-contents div.content .catchcopy {
    line-height: 2;
    font-size: 1.625em;
  }

  /* 横2カラム */

  #feature .feature-contents div.contents div.content {
    width: 50%;
    text-align: left;
  }

}