@charset "UTF-8";
.introduction_cont {
  padding-top: 182px;
  padding-bottom: 50px;
}
@media only screen and (max-width: 1024px) {
  .introduction_cont {
    padding-top: 100px;
  }
}
@media only screen and (max-width: 850px) {
  .introduction_cont {
    padding-top: 70px;
  }
}
@media only screen and (max-width: 768px) {
  .introduction_cont {
    padding-top: 56px;
  }
}
@media only screen and (max-width: 500px) {
  .introduction_cont {
    padding-top: 30px;
  }
}
@media only screen and (max-width: 480px) {
  .introduction_cont {
    padding-top: 18px;
  }
}

.introduction_top {
  display: flex;
  justify-content: space-between;
}
@media only screen and (max-width: 900px) {
  .introduction_top {
    flex-direction: column;
    align-items: center;
    gap: 58px;
  }
}

.introduction_top_imgWrap {
  width: 800px;
  margin-top: 4px;
}
@media only screen and (max-width: 900px) {
  .introduction_top_imgWrap {
    width: 100%;
    margin-top: 0;
    display: flex;
    justify-content: center;
  }
}

.introduction_top_txtGroup {
  flex: 1;
}

.concept_block_word {
  display: flex;
  flex-direction: row-reverse;
}
@media only screen and (max-width: 900px) {
  .concept_block_word {
    flex-direction: column;
  }
}
.concept_block_word div {
  margin-right: 18px;
  margin-left: 40px;
}
@media only screen and (max-width: 1300px) {
  .concept_block_word div {
    margin-right: 20px;
    margin-left: 20px;
  }
}
@media only screen and (max-width: 1024px) {
  .concept_block_word div {
    margin-right: 15px;
    margin-left: 15px;
  }
}
@media only screen and (max-width: 900px) {
  .concept_block_word div {
    margin-right: 0;
    margin-left: 0;
  }
}
.concept_block_word div:nth-child(1) {
  display: flex;
  visibility: visible;
  transition-delay: 0.2s;
}
@media only screen and (max-width: 900px) {
  .concept_block_word div:nth-child(1) {
    flex-direction: column;
  }
}
.concept_block_word div:nth-child(1) h2 {
  order: 2;
}
@media only screen and (max-width: 900px) {
  .concept_block_word div:nth-child(1) h2 {
    order: 2;
  }
}
.concept_block_word div:nth-child(1) h3 {
  order: 1;
}
@media only screen and (max-width: 900px) {
  .concept_block_word div:nth-child(1) h3 {
    order: 2;
  }
}
.concept_block_word div:nth-child(2) {
  visibility: visible;
  transition-delay: 0.3s;
}
.concept_block_word div:nth-child(3) {
  visibility: visible;
  transition-delay: 0.4s;
}
.concept_block_word div:nth-child(4) {
  visibility: visible;
  transition-delay: 0.5s;
}
.concept_block_word div:nth-child(5) {
  visibility: visible;
  transition-delay: 0.6s;
}
.concept_block_word h2 {
  writing-mode: vertical-rl;
  text-orientation: upright;
  color: #db6a6e;
  font-size: 16px;
  margin-left: 32px;
  letter-spacing: 2px;
  transition-duration: 2s;
  transition-delay: 0.1s;
}
@media only screen and (max-width: 1024px) {
  .concept_block_word h2 {
    margin-left: 10px;
  }
}
@media only screen and (max-width: 900px) {
  .concept_block_word h2 {
    writing-mode: horizontal-tb;
    text-align: center;
    margin-left: 0px;
    font-size: 14px;
  }
}
.concept_block_word h3 {
  writing-mode: vertical-rl;
  font-size: 42px;
  font-weight: 600;
  line-height: 0.89;
  letter-spacing: 5px;
  visibility: visible;
  transition-delay: 0.2s;
}
@media only screen and (max-width: 1024px) {
  .concept_block_word h3 {
    line-height: 2;
  }
}
@media only screen and (max-width: 900px) {
  .concept_block_word h3 {
    writing-mode: horizontal-tb;
    text-align: center;
    line-height: 1.8;
    font-size: 26px;
    letter-spacing: 0.15em;
  }
  .concept_block_word h3 br {
    display: none;
  }
}
.concept_block_word p {
  writing-mode: vertical-rl;
  font-weight: 600;
  font-size: 16px;
  line-height: 2.6;
  letter-spacing: 4px;
}
@media only screen and (max-width: 1200px) {
  .concept_block_word p {
    line-height: 3;
  }
}
@media only screen and (max-width: 1200px) {
  .concept_block_word p {
    line-height: 2.5;
  }
}
@media only screen and (max-width: 900px) {
  .concept_block_word p {
    font-size: 14px;
    line-height: 2;
    writing-mode: horizontal-tb;
    margin-right: 0;
    font-weight: 400;
    margin-top: 10px;
    letter-spacing: 0.05em;
  }
  .concept_block_word p br {
    display: none;
  }
}
@media only screen and (max-width: 480px) {
  .concept_block_word p {
    font-weight: normal;
  }
}
.concept_block_word p span {
  margin-top: -0.6em;
}
@media only screen and (max-width: 768px) {
  .concept_block_word p span {
    margin-top: 0;
  }
}
@media only screen and (max-width: 1100px) {
  .concept_block_word .br_none {
    display: none;
  }
}

.introduction_main {
  margin-top: 140px;
  max-width: 1250px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 50px;
}
@media only screen and (max-width: 1200px) {
  .introduction_main {
    margin-top: 100px;
    padding: 0 40px;
  }
}
@media only screen and (max-width: 1024px) {
  .introduction_main {
    padding: 0 30px;
  }
}
@media only screen and (max-width: 900px) {
  .introduction_main {
    margin-top: 48px;
  }
}
@media only screen and (max-width: 768px) {
  .introduction_main {
    padding: 0 20px;
  }
}
@media only screen and (max-width: 640px) {
  .introduction_main {
    padding: 0 15px;
  }
}

.introduction_item:nth-child(n+2) {
  margin-top: 80px;
}
@media only screen and (max-width: 768px) {
  .introduction_item:nth-child(n+2) {
    margin-top: 58px;
  }
}

.introduction_txtTtl {
  font-size: 24px;
  line-height: 1.5;
}
@media only screen and (max-width: 900px) {
  .introduction_txtTtl {
    font-size: 18px;
  }
}
.introduction_txtTtl + .introduction_txt {
  margin-top: 12px;
}
@media only screen and (max-width: 768px) {
  .introduction_txtTtl + .introduction_txt {
    margin-top: 8px;
  }
}

@media only screen and (max-width: 900px) {
  .introduction_txtTtl_br {
    display: none;
  }
}

.introduction_ttlWrap {
  border-top: 1px solid #bfbfbf;
  border-bottom: 1px solid #bfbfbf;
  padding: 4px 0;
}

.introduction_ttl {
  font-size: 30px;
  padding: 22px 30px;
  border-top: 2px solid #bfbfbf;
  border-bottom: 2px solid #bfbfbf;
  line-height: 1.3;
  letter-spacing: 0.4em;
}
@media only screen and (max-width: 900px) {
  .introduction_ttl {
    text-align: center;
    font-size: 20px;
    padding: 18px;
    line-height: 1.25;
  }
}

.introduction_itemInr {
  padding: 56px 70px 0;
  display: flex;
  gap: 60px;
}
@media only screen and (max-width: 1200px) {
  .introduction_itemInr {
    padding: 40px 20px 0;
    gap: 40px;
  }
}
@media only screen and (max-width: 900px) {
  .introduction_itemInr {
    flex-direction: column;
    align-items: center;
    padding: 40px 0 0;
  }
}
@media only screen and (max-width: 768px) {
  .introduction_itemInr {
    padding: 30px 0 0;
    gap: 30px;
  }
}

.introduction_txtWrap {
  flex: 1;
}

.introduction_txt {
  font-size: 15px;
  line-height: 2;
}
@media only screen and (max-width: 900px) {
  .introduction_txt {
    font-size: 14px;
  }
}
.introduction_txt.dot_list {
  position: relative;
  padding-left: 24px;
}
.introduction_txt.dot_list::before {
  content: "・";
  position: absolute;
  top: 0;
  left: 2px;
}
.introduction_txt:nth-of-type(n + 2) {
  margin-top: 10px;
}

.introduction_txtItem {
  display: inline-block;
}

.introduction_item_imgWrap {
  width: 380px;
  margin-top: 8px;
}
@media only screen and (max-width: 1200px) {
  .introduction_item_imgWrap {
    width: 360px;
  }
}
@media only screen and (max-width: 900px) {
  .introduction_item_imgWrap {
    margin-top: 0;
  }
}
@media only screen and (max-width: 640px) {
  .introduction_item_imgWrap {
    width: 240px;
  }
}

.introduction_Numlist {
  margin-top: 12px;
}

.introduction_Numitem {
  position: relative;
  counter-increment: cnt;
  padding-left: 22px;
}
.introduction_Numitem::before {
  position: absolute;
  content: counter(cnt) ".";
  font-size: 16px;
  line-height: 1.625;
  top: 2px;
  left: 4px;
}
.introduction_Numitem:nth-of-type(n + 2) {
  margin-top: 10px;
}

#introduction .introduction_officialLinkCont,
#consulting .introduction_officialLinkCont,
#marketing .introduction_officialLinkCont,
#operating .introduction_officialLinkCont {
  margin-top: 80px;
  display: flex;
  justify-content: center;
  padding-bottom: 125px;
}
@media only screen and (max-width: 1200px) {
  #introduction .introduction_officialLinkCont,
  #consulting .introduction_officialLinkCont,
  #marketing .introduction_officialLinkCont,
  #operating .introduction_officialLinkCont {
    padding-bottom: 100px;
  }
}
@media only screen and (max-width: 900px) {
  #introduction .introduction_officialLinkCont,
  #consulting .introduction_officialLinkCont,
  #marketing .introduction_officialLinkCont,
  #operating .introduction_officialLinkCont {
    margin-top: 60px;
    padding-bottom: 60px;
  }
}
@media only screen and (max-width: 768px) {
  #introduction .introduction_officialLinkCont,
  #consulting .introduction_officialLinkCont,
  #marketing .introduction_officialLinkCont,
  #operating .introduction_officialLinkCont {
    padding-bottom: 50px;
  }
}
#introduction .introduction_officialLink,
#consulting .introduction_officialLink,
#marketing .introduction_officialLink,
#operating .introduction_officialLink {
  color: #db6a6e;
  border: 1px solid #db6a6e;
  padding: 15px;
  text-align: center;
  width: 200px;
  max-height: 50px;
  background-color: #fff;
  font-weight: 900;
  display: block;
  transition: 0.4s;
}
@media only screen and (min-width: 1025px) {
  #introduction .introduction_officialLink:hover,
  #consulting .introduction_officialLink:hover,
  #marketing .introduction_officialLink:hover,
  #operating .introduction_officialLink:hover {
    opacity: 0.8;
  }
}
#introduction .introduction_linkGroup,
#consulting .introduction_linkGroup,
#marketing .introduction_linkGroup,
#operating .introduction_linkGroup {
  display: flex;
  justify-content: center;
  gap: 24px 50px;
}
@media only screen and (max-width: 768px) {
  #introduction .introduction_linkGroup,
  #consulting .introduction_linkGroup,
  #marketing .introduction_linkGroup,
  #operating .introduction_linkGroup {
    gap: 10px;
    flex-direction: column;
    align-items: center;
  }
}
#introduction .introduction_linkGroup.marketing,
#consulting .introduction_linkGroup.marketing,
#marketing .introduction_linkGroup.marketing,
#operating .introduction_linkGroup.marketing {
  margin-top: 100px;
}
#introduction .introduction_linkItem,
#consulting .introduction_linkItem,
#marketing .introduction_linkItem,
#operating .introduction_linkItem {
  font-size: 14px;
}
#introduction .introduction_linkItem:nth-child(n+2),
#consulting .introduction_linkItem:nth-child(n+2),
#marketing .introduction_linkItem:nth-child(n+2),
#operating .introduction_linkItem:nth-child(n+2) {
  position: relative;
}
#introduction .introduction_linkItem:nth-child(n+2)::before,
#consulting .introduction_linkItem:nth-child(n+2)::before,
#marketing .introduction_linkItem:nth-child(n+2)::before,
#operating .introduction_linkItem:nth-child(n+2)::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -26px;
  transform: translateY(-50%);
  width: 1px;
  height: 12px;
  background-color: #000;
}
@media only screen and (max-width: 768px) {
  #introduction .introduction_linkItem:nth-child(n+2)::before,
  #consulting .introduction_linkItem:nth-child(n+2)::before,
  #marketing .introduction_linkItem:nth-child(n+2)::before,
  #operating .introduction_linkItem:nth-child(n+2)::before {
    display: none;
  }
}
#introduction .introduction_link,
#consulting .introduction_link,
#marketing .introduction_link,
#operating .introduction_link {
  transition: 0.4s;
}
@media only screen and (min-width: 1025px) {
  #introduction .introduction_link:hover,
  #consulting .introduction_link:hover,
  #marketing .introduction_link:hover,
  #operating .introduction_link:hover {
    opacity: 0.8;
  }
}

.op_contact {
  margin-top: 118px;
  text-align: center;
  margin-bottom: 30px;
}
@media only screen and (max-width: 768px) {
  .op_contact {
    margin-top: 50px;
  }
}
@media only screen and (max-width: 480px) {
  .op_contact {
    margin-left: 15px;
    margin-right: 15px;
  }
}
.op_contact p {
  margin-bottom: 35px;
}
.op_contact .op_contact_button a {
  color: #fff;
  background-color: #db6a6e;
  padding: 20px 90px;
  border-radius: 5px;
  display: inline;
  transition: all 0.4s;
  font-size: 16px;
  font-weight: 900;
}
@media only screen and (min-width: 1025px) {
  .op_contact .op_contact_button a:hover {
    opacity: 0.8;
  }
}