@charset "UTF-8";

body,
p {
  margin: 0;
}

body {
  -webkit-text-size-adjust: 100%; /* for iphone */
  background-color: #ffffff;
  position: relative;
}
div,
h1,
h2,
h3,
h4,
h5,
h6,
p,
dl,
dt,
dd,
ul,
ol,
li,
table,
caption,
th,
td {
  /*color: #333333;*/
  margin: 0;
  padding: 0;
}

* {
  box-sizing: border-box;
}

img {
  margin: 0px;
  padding: 0px;
  border: none;
  vertical-align: bottom;
}

figure {
  margin: 0;
  padding: 0;
}

.clear {
  clear: both;
}
/* clearfix */
.clearfix {
  display: inline-block;
  zoom: 1;
}
.clearfix:after {
  content: ".";
  display: block;
  clear: both;
  height: 0;
  visibility: hidden;
}

/*------------------------------------------------*/
a:link {
  color: #1a75d2;
  text-decoration: none;
  font-weight: nomal;
}
a:visited {
  color: #1a75d2;
}
a:hover {
  color: #5faaff;
}
/*------------------------------------------------*/
#na_partner {
  width: 100%;
  height: 30px;
  position: relative;
  border-bottom: 1px solid #c7c7c7;
  background-color: #fff;
}
#na_partner .partner_inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 1fr;
  grid-column-gap: 0px;
  grid-row-gap: 0px;
}

.sap {
  font-weight: 400 !important;
  text-align: center;
  grid-area: 1 / 1 / 2 / 2;
}

.partner {
  grid-area: 1 / 2 / 2 / 3;
}

#na_partner .partner_ti {
  text-align: center;
  height: 30px;
  font-family: "Arial", Gadget, "sans-serif";
  font-weight: 700;
  font-size: 18px;
  line-height: 100%;
  color: #999999;
  padding-top: 7px;
}
#na_partner .client_name {
  position: absolute;
  font-family: "Arial", Gadget, "sans-serif";
  font-size: 16px;
  line-height: 100%;
  color: #686868;
  top: 7px;
}
#na_partner .client_logo {
  height: 26px;
  position: absolute;
  font-family: "Arial", Gadget, "sans-serif";
  font-size: 16px;
  line-height: 100%;
  color: #686868;
  top: 2px;
}

#nikkei-footer,
#nikkei-copyright {
  font-family: Arial, Helvetica, Verdana, sans-serif;
}

@media screen and (max-width: 995px) {
  /* sp */
  #na_partner .client_name {
    margin-left: 14px;
  }
}
@media screen and (max-width: 780px) {
  /* sp */
  #na_partner {
    width: 100%;
    height: auto;
    padding-bottom: 8px;
  }
  #na_partner .client_name {
    position: static;
    font-family: "Arial", Gadget, "sans-serif";
    color: #686868;
    top: 0px;
  }
  #na_partner .client_logo {
    position: static;
    font-family: "Arial", Gadget, "sans-serif";
    font-size: 16px;
    line-height: 100%;
    color: #686868;
    top: 0px;
  }
  #na_partner .partner_inner {
    display: block;
  }
}
/*------------------------------------------------*/
#pageTop {
  border-radius: 5px;
  color: #ffffff;
  font-family: "Arial", Gadget, "sans-serif";
  padding: 14px;
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #333333;
  z-index: 9999;
}
#pageTop:hover {
  background-color: #0099cc;
  cursor: pointer;
}
/*------------------------------------------------*/

.container {
  font-family: "Inter", serif;
  margin: auto;
}

main {
  color: #fff;
}

#main-visual {
  position: relative;
  background-color: #111111;
  z-index: 10;
}

#main-visual::before {
  content: "";
  z-index: -1;
  background-image: url(../images/B_top-bg-left.png);
  background-size: contain;
  background-repeat: repeat-y;
  background-position: left;
  position: absolute;
  top: 0;
  left: 0;
  width: 300px;
  height: 100%;
}

#main-visual::after {
  content: "";
  z-index: -1;
  background-image: url(../images/B_top-bg-right.png);
  background-size: contain;
  background-repeat: repeat-y;
  background-position: right;
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 100%;
}

#main-visual > .main-visual-wrapper {
  margin: auto;
  padding-bottom: 15px;
  max-width: 900px;
}

.main-visual-wrapper > div {
  display: flex;
  flex-direction: column;
  gap: 60px;
  margin: auto;
  padding: 30px 120px;
}

.main-visual-wrapper > div > h1 {
  font-size: 48px;
  font-weight: bold;
  text-align: center;
  position: relative;
  margin: auto;
}

.main-visual-wrapper > div > h1::after {
  content: "";
  position: absolute;
  transform: translateX(-50%);
  bottom: -25px;
  left: 50%;
  border-bottom: 8px solid #cc0011;
  width: 70px;
}

.main-visual-wrapper > div > .red-box {
  font-size: 20px;
  line-height: 30px;
}

#contents {
  background-color: #222222;
  position: relative;
  z-index: 10;
}

#contents::before {
  content: "";
  z-index: -1;
  background-image: url(../images/B_honbun-bg-left.png);
  background-size: contain;
  background-repeat: repeat-y;
  background-position: left;
  position: absolute;
  top: 0;
  left: 0;
  width: 300px;
  height: 100%;
}

#contents::after {
  content: "";
  z-index: -1;
  background-image: url(../images/B_honbun-bg-right.png);
  background-size: contain;
  background-repeat: repeat-y;
  background-position: right;
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 100%;
}

#contents > .contents-wrapper {
  margin: auto;
  padding: 50px 0;
  max-width: 900px;
}

#contents > .contents-wrapper > .content {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin: auto;
  padding: 0 120px;
}

#contents > .contents-wrapper > .content:not(:first-child) {
  margin-top: 60px;
}

#contents > .contents-wrapper > .content > p {
  font-weight: 200;
  font-size: 16px;
  line-height: 28px;
}

#contents > .contents-wrapper > .content > h2 {
  font-size: 40px;
  line-height: 50px;
  font-weight: bold;
  position: relative;
  margin-bottom: 20px;
}

#contents > .contents-wrapper > .content > h2::after {
  content: "";
  position: absolute;
  bottom: -20px;
  left: 0;
  border-bottom: 8px solid #cc0011;
  width: 70px;
}

#contents > .contents-wrapper > .content > .img-box > .red-box {
  font-size: 16px;
  line-height: 28px;
}

#contents > .contents-wrapper > .content > .img-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#contents > .contents-wrapper > .content > .img-box > img:not(:first-child) {
  margin-top: 15px;
}

#contents > .contents-wrapper > .gray {
  background-color: #353232;
  padding-top: 80px;
  padding-bottom: 80px;
}

.info-box {
  color: #fff;
  background-color: #cc0011;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 25px 50px;
}

.info-box > h3 {
  font-size: 32px;
  line-height: 50px;
  margin: 10px;
}

.info-box > .details {
  display: flex;
  justify-content: space-evenly;
  gap: 30px;
  width: 100%;
  margin-top: 20px;
}

.info-box > .more {
  background-color: #000;
  margin-top: 30px;
  width: 250px;
}

.info-box > .more > a {
  color: #fff;
  text-align: center;
  display: block;
  padding: 10px;
  width: 100%;
}

.info-box > .details > .detail {
  text-align: center;
}

.info-box > .details > .detail > .subject {
  font-weight: 200;
  font-size: 32px;
  line-height: 56px;
}

.info-box > .details > .detail > .main {
  font-size: 24px;
  font-weight: bold;
  line-height: 46px;
}

.info-box > .details > .detail > .sub {
  font-size: 16px;
  line-height: 24px;
}

.red-box {
  color: #fff;
  background-color: #cc0011;
  padding: 1rem;
  width: 100%;
}

.bold {
  font-weight: bold;
}

.underline {
  text-decoration: underline;
}

.underline > a {
  color: #fff;
}

.logo {
  text-align: center;
  background-color: #fff;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  padding: 4rem 0;
  width: 500px;
}

@media screen and (max-width: 768px) {
  .main-visual-wrapper > div {
    padding: 30px 20px 15px;
  }

  .main-visual-wrapper > div > h1 {
    font-size: 40px;
    line-height: 50px;
  }

  .main-visual-wrapper > div > h1::after {
    bottom: -30px;
  }

  #main-visual::before {
    width: 150px;
  }

  #main-visual::after {
    width: 150px;
  }

  .main-visual-wrapper > div > .red-box {
    font-size: 18px;
    line-height: 28px;
    padding: 20px 25px;
  }

  #contents::before {
    width: 150px;
  }

  #contents::after {
    width: 150px;
  }

  #contents > .contents-wrapper {
    padding: 30px 0;
  }

  #contents > .contents-wrapper > .content {
    padding: 0 20px;
  }

  #contents > .contents-wrapper > .content > h2 {
    font-size: 28px;
    line-height: 35px;
    margin-bottom: 20px;
  }

  #contents > .contents-wrapper > .content > h2::after {
    bottom: -20px;
    border-bottom: 4px solid #cc0011;
    width: 36px;
  }

  #contents > .contents-wrapper > .content > .img-box > .red-box {
    font-size: 14px;
    line-height: 21px;
  }

  #contents > .contents-wrapper > .gray {
    padding-top: 60px;
    padding-bottom: 60px;
  }

  .info-box {
    padding: 30px 20px;
  }

  .info-box > img {
    width: 100%;
  }

  .info-box > h3 {
    font-size: 24px;
    line-height: 30px;
    margin: 10px 0 30px;
  }

  .info-box > .details {
    flex-direction: column;
  }

  .info-box > .details > .detail > .subject {
    font-size: 24px;
    line-height: 44px;
  }

  .logo {
    padding: 40px 0;
    width: 100%;
  }
}