* {
  margin: 0;
  padding: 0;
  position: relative;
}
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
}

body {
  line-height: 1.75;
  letter-spacing: 0;
  font-feature-settings: "palt";
  font-family: YakuhanMP, "Noto Serif JP", serif;
  font-weight: 500;
  font-size: 1.2rem;
}
@media screen and (min-width: 581px) {
  body {
    font-size: 1.6rem;
  }
}

a {
  text-decoration: none;
  color: inherit;
}
a.uline:hover {
  text-decoration: underline;
}
@media (min-width: 481px) {
  a.tel {
    pointer-events: none;
  }
}
a.current {
  pointer-events: none;
}

span.uline {
  text-decoration: underline;
}

header {
  line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
  font-size: 1em;
  font-weight: normal;
  font-style: normal;
  line-height: 1.5;
}

li {
  list-style: none;
}

figure {
  display: block;
}

sup {
  font-size: 50%;
}

img, video {
  border: none;
  outline: none;
  height: auto;
  vertical-align: bottom;
  width: 100%;
}

button {
  outline: none;
  border: none;
  background: none;
  padding: 0;
  font-family: inherit;
  font-size: 1em;
  font-style: normal;
  appearance: none;
  border-radius: 0;
  cursor: pointer;
}

.ib {
  display: inline-block;
}

.main {
  background: #eaeaea;
}

.nikko_text {
  padding: 30px 0;
  text-align: center;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}
.nikko_text p {
  z-index: 10;
}
.nikko_text .large {
  font-size: 150%;
  margin: 20px 0;
}
.nikko_text_img {
  margin-top: max(-20vw, -250px);
}

.cm {
  padding: 0 20px;
}
.cm_top {
  margin: 0 auto;
  margin-top: max(-30vw, -300px);
  max-width: 1060px;
  border-bottom: 10px solid #003893;
}
.cm_in {
  display: block;
  position: absolute;
  width: 91.1320754717%;
  bottom: min(3.2vw, 38px);
  left: 0;
  right: 0;
  margin: 0 auto;
}

.content::before {
  content: "";
  width: calc(100% - 40px);
  max-width: 1060px;
  height: calc(100% - 100px);
  background: #003893;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  margin: 0 auto;
}
.content_img {
  background: #1e1e1e;
  display: grid;
  place-items: center;
}
.content_img_in {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
}
.content_img_in_div {
  width: 228px;
}
.content_img_a {
  display: grid;
  place-items: center;
  width: 180px;
  background: #f08600;
  height: 36px;
  margin: 16px auto 0;
}
.content_img_a img {
  width: 113px;
}
.content_img_a:hover {
  background: #003893;
}
.content_text {
  width: calc(100% - 80px);
  margin: 0 auto;
  padding: 30px;
  background: #FFF;
  border-top: 2px solid #f08600;
}
.content_text_in {
  margin-bottom: 20px;
}
.content_text_head {
  font-size: 125%;
  color: #003893;
  margin-bottom: 16px;
}
.content_text .blue {
  color: #003893;
  margin-bottom: 16px;
}
.content_li {
  margin-bottom: 40px;
}
@media screen and (min-width: 820px) {
  .content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
  }
  .content_li {
    width: calc(50% - 10px);
    display: flex;
    flex-direction: column;
  }
  .content_text {
    margin-top: -40px;
  }
  .content_text.pad {
    padding-bottom: 100px;
  }
  .content_text.pad2 {
    padding-bottom: 100px;
  }
}

.corp_head {
  width: 100%;
  padding: 0 20px;
  max-width: 1100px;
  margin: 0 auto;
}
.corp_img_sign {
  position: absolute;
  width: 26%;
  right: 20px;
  bottom: 20px;
}
.corp_tab {
  display: flex;
}
.corp_tab_btn {
  width: 50%;
  height: 70px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 2px solid #003893;
  background: #eaeaea;
}
.corp_tab_btn .S {
  color: #003893;
  font-size: 60%;
  display: inline-block;
  margin-right: 20px;
}
.corp_tab_btn.current {
  border-color: #f29600;
  background: #FFF;
}
.corp_tab_btn.current::after {
  content: "";
  width: 30px;
  height: 5px;
  background: #f29600;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  position: absolute;
  top: calc(100% + 7px);
  left: 0;
  right: 0;
  margin: 0 auto;
}
.corp_text {
  border: 20px solid #cecece;
  background: #FFF;
  max-width: 860px;
  margin: -20px auto 0;
}
.corp_text_head {
  text-align: center;
  margin: 30px 0;
  font-size: 150%;
  color: #003893;
}
.corp_text_in {
  padding: 30px 20px;
  max-width: 720px;
  margin: 0 auto;
  display: none;
}
.corp_text_in.show {
  display: block;
}
.corp_body {
  background: #003893;
  padding-bottom: 20px;
}
@media screen and (min-width: 581px) {
  .corp_img_sign {
    right: -20px;
    bottom: 50px;
  }
  .corp_body {
    padding: 50px 20px 20px;
  }
  .corp_body_in {
    margin: 0 auto;
    max-width: 1000px;
  }
}

.company {
  background: #003893;
}
.company_head {
  width: 60%;
  max-width: 370px;
  margin: 0 auto;
}
.company_dl {
  padding: 0 40px;
  margin: -9px auto 0;
}
.company_dt {
  background: #3b6bb2;
  padding: 1em;
  color: #FFF;
  margin-top: 6px;
}
.company_dd {
  background: #FFF;
  padding: 1em;
  margin-top: 6px;
}
@media screen and (min-width: 581px) {
  .company_item {
    display: flex;
    justify-content: space-between;
  }
  .company_dl {
    max-width: 940px;
    margin-top: -15px;
  }
  .company_dt {
    width: 160px;
    margin-top: 9px;
  }
  .company_dd {
    margin-top: 9px;
    width: calc(100% - 169px);
  }
}

.footer {
  padding: 50px 20px 100px;
  background: #003893;
}
.footer .copyright {
  text-align: center;
  color: #FFF;
  font-size: 12px;
}

.logo {
  width: 120px;
  position: absolute;
  top: 20px;
  left: 20px;
}
@media screen and (min-width: 581px) {
  .logo {
    width: 275px;
  }
}

.sc-up {
  opacity: 0;
  transform: translateY(100px);
}
.sc-up.fire {
  opacity: 1;
  transform: none;
  transition: 1s;
}

.op {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  z-index: 100;
}
.op.fire {
  opacity: 0;
  transition: opacity 1s linear;
}
.op-1 {
  background: #E7E7E7;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
}
.op-1_img {
  width: 90%;
  max-width: 743px;
}
.op-1_img_bar {
  width: 200px;
  height: 1px;
  margin: 30px auto 0;
  background: #a7bbd3;
}
.op-1_img_bar::after {
  content: "";
  width: 100%;
  height: 1px;
  background: #003893;
  position: absolute;
  top: 0;
  left: 0;
  transform: scaleX(0);
  transform-origin: 0 50%;
}
.op-1.fire {
  opacity: 0;
  transition: opacity 1s linear 1s;
}
.op-1.fire .op-1_img_bar::after {
  transform: scaleX(1);
  transition: 1s linear;
}
.op-2 {
  background: #E7E7E7;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
}
.op-2_vid {
  width: 80%;
  max-width: 668px;
  mix-blend-mode: darken;
}
.op-2_vid video {
  width: 100%;
}

.vid {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  place-items: center;
  z-index: 100;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.5s linear;
}
.vid.show {
  opacity: 1;
}
.vid_in {
  width: 100%;
  max-width: 1280px;
}
.vid_close {
  display: block;
  width: 60px;
  height: 60px;
  position: absolute;
  top: -65px;
  right: 0;
}
.vid_close::before, .vid_close::after {
  content: "";
  position: absolute;
  top: 50%;
  left: -5px;
  background: #FFF;
  width: 70px;
  height: 1px;
}
.vid_close::before {
  transform: rotate(-45deg);
}
.vid_close::after {
  transform: rotate(45deg);
}