.c--first {
  height: 350px;
}
/* =========================================================
コンサルティング事業
========================================================= */
.con-first-top-box-right,
.con-first-btm {
  position: relative;
  z-index: 15;
}
.con-box-line-box {
  top: 0px;
  right: -200px;
  left: initial;
}
/* =========================================================
選ばれる理由
========================================================= */
.reason {
  width: 100%;
  height: 700px;
  background-color: #fdfdfd;
  position: relative;
}
.reason-mid {
  width: 100%;
  margin-bottom: 66px;
  display: flex;
  justify-content: space-between;
}
.reason-btn {
  margin: 0 auto;
  font-family: 'Noto Sans JP';
  font-weight: bold;
  font-size: 16px;
  letter-spacing: 0.06em;
  text-align: center;
  color: #fdfdfd;
  position: relative;
}
.reason-btm {
  width: 560px;
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
}
.download-icon {
  width: 15px;
  height: 15px;
  position: absolute;
  top: 20px;
  right: 55px;
}
/* =========================================================
flow
========================================================= */
.flow {
  width: 100%;
  height: 750px;
  background-color: #fdfdfd;
  position: relative;
}
.flow-cnt {
  margin-top: 50px;
  position: relative;
}
.flow-cnt-top,
.flow-cnt-btm {
  width: 1050px;
  display: flex;
  justify-content: space-between;
  position: relative;
}
.flow-cnt-btm {
  margin-top: 58px;
  margin-left: auto;
  margin-right: 0;
}
.flow-square {
  width: 100%;
  height: 76px;
  background-color: #3e81ba;
  display: block;
  position: absolute;
  top: 46px;
}
.flow-cnt-box {
  width: 330px;
  height: 216px;
  background-color: #edf1f7;
  border-radius: 11px;
  position: relative;
  z-index: 10;
}
.flow-cnt-ttl-box {
  padding-top: 20px;
  margin-bottom: 20px;
}
.flow-cnt-ttl-eng {
  font-family: 'Noto Sans JP';
  font-weight: 500;
  font-size: 14px;
  line-height: 29px;
  text-align: center;
  color: #3e81ba;
}
.flow-cnt-ttl-jp {
  font-family: 'Noto Sans JP';
  font-weight: bold;
  font-size: 20px;
  letter-spacing: 0.06em;
  line-height: 30px;
  text-align: center;
  color: #2a313c;
}
.flow-cnt-txt-box {
  padding: 0 25px;
}
.flow-cnt-txt {
  font-family: 'Noto Sans JP';
  font-weight: 500;
  font-size: 16px;
  letter-spacing: 0.06em;
  line-height: 25px;
  text-align: left;
  color: #2e3c53;
}
.flow-btn {
  margin: 30px auto 0;
  font-family: 'Noto Sans JP';
  font-weight: bold;
  font-size: 16px;
  letter-spacing: 0.06em;
  text-align: center;
  color: #fdfdfd;
}
/* =========================================================
case
========================================================= */
.case {
  width: 100%;
  height: 570px;
  background-image: url('../img/front-case-bg.png');
  position: relative;
}
.case-top {
  display: flex;
  padding-top: 107px;
  margin-bottom: 52px;
}
.case-top-ttl-box {
  margin-right: 90px;
}
.case-top-ttl {
  font-family: 'Noto Serif JP';
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.06em;
  line-height: 30px;
  text-align: left;
  color: #3e81ba;
}
.case-top-txt {
  font-family: 'Noto Sans JP';
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.06em;
  line-height: 25px;
  text-align: left;
  color: #2e3c53;
}
.case-btm {
  width: 100%;
  display: flex;
  justify-content: space-between;
  position: relative;
}
.case-btm-box {
  width: 580px;
  height: 270px;
  position: relative;
}
.case-btm-box-1 {
  background-image: url('../img/front-case-btm-bg-1.png');
}
.case-btm-box-2 {
  background-image: url('../img/front-case-btm-bg-2.png');
}
.case-btm-square {
  height: 56px;
  display: block;
  border: 5px solid #fdfdfd;
  position: absolute;
  top: 114px;
}
.case-btm-square-1 {
  width: 231px;
  left: 138px;
}
.case-btm-square-2 {
  width: 126px;
  left: 190px;
}
.case-btm-ttl-box {
  display: flex;
  justify-content: center;
  align-items: center;
}
.case-btm-ttl {
  font-family: 'Noto Serif JP';
  font-weight: 600;
  font-size: 32px;
  letter-spacing: 0.08em;
  line-height: 280px;
  text-align: left;
  color: #fdfdfd;
  text-shadow: 0px 0px 6px rgba(20, 28, 33, 0.31);
}
.case-btm-ttl-small {
  font-size: 20px;
  margin-left: 2px;
}
@media screen and (max-width: 640px) {
  .c--first {
    height: auto;
  }
  .con-box-line-box {
    top: 3px;
    right: -167px;
  }
  /* =========================================================
  選ばれる理由
  ========================================================= */
  .reason {
    height: auto;
    padding-bottom: 61px;
  }
  .reason-mid {
    flex-direction: column;
    margin-bottom: 0;
  }
  .reason-btm {
    width: auto;
    flex-direction: column;
  }
  .reason-btn {
    margin-bottom: 20px;
  }
  .download-icon {
    top: 15px;
    right: 43px;
  }
  /* =========================================================
  ご依頼の流れ
  ========================================================= */
  .flow {
    height: auto;
    padding-bottom: 40px;
  }
  .flow-cnt {
    margin: 0;
  }
  .flow-cnt-top,
  .flow-cnt-btm {
    width: 100%;
    flex-direction: column;
  }
  .flow-cnt-btm {
    margin: 0;
  }
  .flow-square {
    width: 118px;
    height: 90%;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    -webkit-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
  }
  .flow-cnt-box {
    width: 100%;
    height: auto;
    padding: 20px 24px 47px;
    margin-bottom: 20px;
  }
  .flow-cnt-ttl-box {
    padding-top: 0;
    margin-bottom: 0;
  }
  .flow-cnt-txt-box {
    padding: 0;
  }
}