@charset "UTF-8";

/*　全ページ共通部分のcssです　*/

html {
  margin: 0;
  padding: 0;
  border: none;
  width: 100%;
  font-size: 62.5%;
  font-family:
    "Noto Sans JP",
    "Avenir Next",
    "Helvetica Neue",
    "Hiragino Kaku Gothic ProN",
    "Hiragino Sans",
    "Meiryo",
    sans-serif;
}

body {
  font-size: 1.4rem;
  width: 100%;
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

.clearfix::after {
  content: "";
  display: block;
  clear: both;
}

a {
  color:#003F8E;
  text-decoration: none;
  word-wrap: break-word;
}

/* a:hover {
  opacity: 0.7;
  transition:0.5s;
} */

a:hover {
  text-decoration:underline; 
  opacity:1;
  transition:0;
}

.display-none {
  display: none;
}

h2 {
  width: 100%;
  margin:0;
  padding: 50px 0;
  padding-left: 0;
  border:none;
  font-size: 25px;
  font-weight:normal;
}

h4 {
  margin-block-start: 0.5em;
  margin-block-end: 0.5em;
}

li{
  list-style:none;
}

.page-top {
  margin-top: 1em;
  text-align: right;
}

.sub{
  /* padding-left:3em; */
  line-height:1.7em;
  font-size:15px;
}
.sub ul{
  padding-left:1.5em;
}
.sub ul li{
  position:relative;
}
.sub ul li::before {
  content: '';
  display: block;
  position: absolute;
  top: .5em;
  left: -1.5em;
  width: 10px;
  height: 5px;
  border-left: 2px solid #003F8E;
  border-bottom: 2px solid #003F8E;
  transform: rotate(-45deg);
}
.sub ul li::marker {
  display:none;
}
.sub ol li{
  padding-bottom:23px;
}

/*スクロールバーの幅*/
::-webkit-scrollbar {
  width: 6px;
}
/*スクロールバーのレール*/
::-webkit-scrollbar-track {
border-radius: 30px;
background: #eee;
}
/*スクロールバーのつまみ*/
::-webkit-scrollbar-thumb {
border-radius: 30px;
background: #ccc;
}

@media (min-width: 992px) {
  main {
    max-width:1200px;
    width: 992px;
    margin: 0 auto;
  }

  .topic-path {
    padding: 15px 0;
  }
}

@media (max-width: 991px) {
  main {
    width: 100%;
    margin: 0 auto 0 auto;
  }

  .contents {
    margin: 0.5em;
  }

  .topic-path {
    display: none;
  }

  h2 {
    font-size: 1.2em;
    margin: 1em auto;
    padding: 0.5em;
    border-left: none;
    border-top: 1px dotted #999;
    border-bottom: 1px dotted #999;
  }
}



/*　ヘッダー（PC）　*/

@media (min-width: 992px) {
  .hamburgerIcon {
    display: none;
  }

  .closeIcon {
    display: none;
  }

  .header-container {
    width: 100%;
    margin: 0 auto;
  }

  .header-1 {
    width: 100%;
    margin-bottom: 1em;
    text-align: left;
    justify-content: center;
    background-color: #fafafa;
  }

  .header-1 img {
    width: 173px;
  }

  .header-2 {
    width: 992px;
    margin: 0 auto;
    display: flex;
  }

  .header-2-logo {
    width: 23%;
    text-align: center;
  }

  .header-2-logo img {
    max-width: 100%;
  }

  .header-2-text {
    width: 75%;
    padding: 0 0 15px 30px;
  }

  .header-2-text p {
    line-height: 0.3em;
  }

  p.header3-text1 {
    font-size: 2em;
  }

  p.header3-text2 {
    font-size: 2em;
  }

  p.header3-text3 {
    font-size: 1.5em;
  }
}
/*　ヘッダー（mobile）　*/

@media (max-width: 991px) {
  .header-1 {
    width: 100%;
    padding: 0.5em 0;
    background-color: #fafafa;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  img.aistLogo {
    width: 140px;
    margin-right: auto;
  }

  img.hamburgerIcon:not(.mobileNavActive) {
    width: 40px;
    margin-right: 10px;
    margin-left: auto;
  }

  img.hamburgerIcon.mobileNavActive {
    display: none;
  }

  img.closeIcon:not(.mobileNavActive) {
    display: none;
  }

  img.closeIcon.mobileNavActive {
    width: 40px;
    padding-top: 5px;
    margin-right: 10px;
    margin-left: auto;
  }

  .header-2 {
    width: 100%;    
    margin: 0 auto;
    padding:10px;
    display: flex;
  }

  .header-2.mobileNavActive {
    display: none;
  }

  .header-2-logo {
    width: 30vw;
  }

  .header-2-logo img {
    max-width: 100%;
  }

  .header-2-text {
    margin: 0 auto;
  }

  .header-2-text p {
    line-height: 0.5vw;
  }

  p.header3-text1 {
    font-size: 3vw;
  }

  p.header3-text2 {
    font-size: 3vw;
  }

  p.header3-text3 {
    font-size: 2.5vw;
  }
}

/*　ナビ（pc）　*/

@media (min-width: 992px) {
  .nav-container {
    width: 100%;
    background: #13375e;
  }

  .nav {
    width: 992px;
    margin: 0 auto;
  }

  .nav ul {
    background-color: #13375e;
    display: table;
    table-layout: fixed;
    justify-content: center;
    width: 100%;
    padding: 0;
    margin: 0;
  }

  .nav ul li {
    border-right: 1px solid #fff;
    display: table-cell;
  }

  .nav ul li:first-child {
    border-left: 1px solid #fff;
  }

  .nav ul li a {
    color: #fff;
    display: block;
    font-size: 13px;
    text-align: center;
    text-decoration: none;
    padding: 20px 1px;
  }

  /* .nav li a:hover {
    background-color: #a9bce2;
  } */

  .nav li:hover {
    background-color:#2266af;
    opacity: 1;
    transition:0s;
  }

  .nav li a:hover{
    color:white;
    opacity: 1;
    transition:0s;
  }
}

/*　ナビ（mobile）　*/

@media (max-width: 991px) {
  .nav-container:not(.mobileNavActive) {
    display: none;
  }

  .nav {
    width: 100%;
    margin: 0 auto;
  }

  .nav ul {
    background-color: #1f394d;
    display: table;
    table-layout: fixed;
    justify-content: center;
    width: 100%;
    padding: 0;
    margin: 0;
  }

  .nav ul li {
    border-bottom: 1px #fff solid;
  }

  .nav ul li a {
    color: #fff;
    display: block;
    font-size: 13px;
    text-align: center;
    text-decoration: none;
    padding: 20px 1px;
  }

  /* .nav li a:hover {
    background-color: #a9bce2;
  } */

  .nav li a:hover{
    color:black;
  }
}

/*　フッター　*/

.footer {
  margin: 180px 0 20px 0;
  text-align: center;
  color:#999;
}

.copyright {
  padding: 10px;
}