@charset "UTF-8";
/*==========================
    - 〜479px      ：SP portrait
    - 480px〜599px ：SP landscape
    - 600px〜959px ：tablet
    - 960px〜1279px：small PC
    - 1280px〜     ：large PC
    - 1400px〜     ：largest PC
==========================*/
/* 〜479px：SP portrait
------------------------------ */
/***************************
    container
***************************/
#title-bar {
  background-image: url(../img/h1_bg_sp.png); }

#block-intro > .bg {
  background: url("../img/intro_bg_sp.png") top center no-repeat;
  background-size: 100%; }
#block-intro > .inner {
  padding: 30px 0 40px; }
#block-intro .pd-b01 {
  padding-bottom: 30px;
}
#block-intro .img-box {
  position: relative;
  max-width: 750px;
  margin: 0 auto; }
#block-intro .logo-10th {
  width: 20.147058823529413%;
  margin: 24px auto 38px; }
#block-intro .photo {
  margin: 0 auto 38px; }
#block-intro .history {
  width: 100%;
  line-height: 22px;
  font-size: 12px; }
  #block-intro .history tr + tr {
    border-top: 1px solid #999; }
    #block-intro .history tr + tr th, #block-intro .history tr + tr td {
      padding: 15px 0; }
  #block-intro .history tr th {
    width: 23.52941176470588%;
    padding: 0 0 15px; }
  #block-intro .history tr td {
    width: 76.47058823529412%;
    padding: 0 0 15px; }

#block-influence > .bg {
  background: url("/mathematics/about/assets/img/influence_bg.jpg") top no-repeat;
  background-size: cover; }
#block-influence > .inner {
  padding: 38px 0 60px; }

#block-power > .bg {
  background: url("/mathematics/assets/img/concept_bg_sp.png") top center no-repeat;
  background-size: 100%; }
#block-power > .inner {
  padding: 30px 0 40px; }
#block-power h2.title {
  font-size: 24px;
  line-height: 1.3em;
  margin: 0 auto 45px; }
  #block-power h2.title > span {
    display: block;
    font-size: 14px;
    font-weight: bold;
    line-height: 1.6em;
    letter-spacing: 0em;
    margin-top: 0.6em;
    color: #6bc8f2; }
#block-power .block-concept-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  box-sizing: border-box;
  margin: 0 auto; }
  #block-power .block-concept-list li {
    width: 48.529411764705884%;
    margin: 10px 0 0;
    line-height: 22px;
    font-size: 10px;
    text-align: center;
    background: #fff;
    box-sizing: border-box;
    border: 2px solid #f8b62b; }
    #block-power .block-concept-list li:nth-child(1), #block-power .block-concept-list li:nth-child(2) {
      margin: 0; }
    #block-power .block-concept-list li h4 {
      background: #f8b62b;
      color: #fff;
      padding: 13px 0;
      line-height: 13px;
      font-size: 13px;
      font-weight: bold; }
    #block-power .block-concept-list li .text {
      color: #333;
      padding: 15px 10px;
      text-align: left; }

#block-number {
  margin-bottom: 30px;
  padding: 0 0 40px;
}

#block-number .bg {
  background: url("/mathematics/assets/img/bg_appeal_top.jpg") repeat-x top, 
  url(/mathematics/assets/img/bg_appeal_bottom.jpg) repeat-x bottom,
  url(/mathematics/assets/img/bg_appeal.jpg) repeat-y top center / 100%; }
#block-number > .inner {
  padding: 0 0 30px; }
#block-number .blk-head .inner {
  padding: 55px 0 0px;
  width: 90.66666666666666%;
  margin: 0 auto; }
#block-number h2.title {
  color: #fff; }
  #block-number h2.title span {
    font-size: 18px;
    display: inline-block;
    color: #fff; }
  #block-number h2.title .color1 {
    background: #fff;
    padding: 20px;
    color: #f8b62b;
    border: 1px solid #70d1f5; }
#block-number .border_txt {
  font-size: 14px;
  text-align: left;
  color: #fff;
  border: 2px solid #fff;
  padding: 20px 15px;
  width: 100%;
  margin: 0 auto 40px;
  box-sizing: border-box; }
  #block-number .border_txt img {
   display: block;
    width: 20px;
    margin: 15px auto;}
  #block-number .box-img {
    margin: 20px 0px;
  }

#block-number .inner {
   margin-bottom: 30px;
}
#block-number .society-box h3 {
  margin: 0 auto 10px;
  color: #fff;
  font-size: 20px;
}
#block-number .box-txt p {
  color: #fff;
}

#block-cooperator > .bg {
  background: url("../img/intro_bg_sp.png") top center no-repeat;
  background-size: 100%; }
#block-cooperator > .inner {
  padding: 30px 0 40px; }

/* 480px〜599px：SP landscape
------------------------------ */
@media screen and (min-width: 414px) {
  /***************************
      container
  ***************************/ }
/* 600px〜959px：tablet
------------------------------ */
@media screen and (min-width: 600px) {
  /***************************
      container
  ***************************/
}
	/* 960px〜1279px：small PC
------------------------------ */
@media screen and (min-width: 960px) {
  /***************************
      container
  ***************************/
  #title-bar {
  background-image: url(../img/h1_bg_pc.png); }

  #block-intro .bg {
    background: url("../img/intro_bg_pc.png") no-repeat 0 26em;
    background-size: 100%; }
  #block-intro > .inner {
    padding: 40px 0 0; }
  #block-intro .pd-b01 {
  padding-bottom: 55px; }
  #block-intro .logo-10th {
    width: 170px;
    margin: 50px auto 80px; }
  #block-intro .photo {
    width: 950px;
    margin: 0 auto 80px; }
  #block-intro .history {
    width: 950px;
    margin: 0 auto;
    line-height: 30px;
    font-size: 16px; }
    #block-intro .history tr + tr th, #block-intro .history tr + tr td {
      padding: 22px 0; }
    #block-intro .history tr th {
      width: 130px;
      padding: 0 0 22px; }
    #block-intro .history tr td {
      width: 820px;
      padding: 0 0 22px; }

  #block-influence > .inner {
    padding: 70px 0 70px; }
    #block-influence > .inner .blk-body .inner {
      max-width: 950px;
      margin: 0 auto; }

  #block-supervision > .bg:before {
    top: -130px;
    height: calc(100% + 130px);
    background: url("../img/supervision_bg_pc.png") left top no-repeat;
    background-size: 100%; }
  #block-supervision > .inner {
    padding: 100px 0 120px; }
  #block-supervision .photo {
    margin: 70px 0; }

  #block-power > .bg {
    background: url("/mathematics/assets/img/concept_bg_pc.png") top center repeat-y;
    background-size: 100%; }
  #block-power > .inner {
    padding: 40px 0 50px;
    box-sizing: border-box; }
  #block-power h2.title {
    font-size: 48px; }
    #block-power h2.title > span {
      font-size: 17px; }
  #block-power .block-concept-list {
    width: 950px;
    margin: 56px auto 50px; }
    #block-power .block-concept-list li {
      width: 303px;
      margin: 20px 0 0;
      line-height: 30px;
      font-size: 16px; }
      #block-power .block-concept-list li:nth-child(3) {
        margin: 0; }
      #block-power .block-concept-list li h4 {
        line-height: 40px;
        font-size: 22px;
        padding: 2px 0; }
      #block-power .block-concept-list li .text {
        padding: 13px 20px;
        font-size: 14px; }
  #block-power .accr {
    width: 240px; }

  #block-number {
    margin-bottom: 60px;
  }

  #block-number .inner {
    margin-bottom: 75px;
  }

  #block-number > .inner {
   width: 90.66666666666666%;
    margin: 0 auto; }
  #block-number .blk-head .inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 80px 0 0; }
  #block-number h2.title {
    margin: 0 0 35px; }
    #block-number h2.title span {
      font-size: 38px; }
    #block-number h2.title .color1 {
      padding: 30px; }
  #block-number .border_txt {
    font-size: 26px;
    text-align: center;
    border: 3px solid #fff;
    padding: 20px;
    max-width: 1030px;
    margin: 0 auto 0; }
  #block-number .rel_box {
    max-width: 750px; }
  #block-number .number_txt {
    width: 200px; }

  #block-number .society-box h3 {
    font-size: 28px;
  }
  #block-number .box:nth-child(1) {
    margin: auto;
  }
  #block-number .box:nth-child(2) {
    margin: auto;
  }
  #block-number .box-img {
    width: 100%;
  }
  #block-number .border_txt img{
    width: 36px;
    margin: 30px auto;
  }

}

/* 1280px〜：large PC
------------------------------ */
@media screen and (min-width: 1280px) {
  /***************************
      container
  ***************************/ 

  #block-number > .inner{
    max-width: 1030px;
    margin: 0 auto;
    padding: 0 0 80px;
  }

  #block-number .society-box {
    display: flex;
    flex-wrap: wrap;
  }
   #block-number .box:nth-child(1) {
    width: 50%;
    max-width: 343px;
  }
  #block-number .box:nth-child(2) {
    width: 63%;
    min-width: 656px;
    margin-left: 0 0 0 25px;
    box-sizing: border-box;
  }

}
/* 1400px〜：largest PC
------------------------------ */
@media screen and (min-width: 1400px) {
  /***************************
      container
  ***************************/ }
/*# sourceMappingURL=index.css.map */