@charset "Shift-JIS";
@import url("https://use.fontawesome.com/releases/v5.14.0/css/all.css");

/* ページ全体のスタイル
------------------------------------------ */
html {
  font-size: 62.5%;
}

@media screen and (max-width: 767px) {
  html {
    font-size: calc(10 / 375 * 100vw);
  }
}

@media screen and (min-width: 768px) {
  html {
    font-size: calc(10 / 1536 * 100vw);
  }
}

body {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1.75;
  color: #000;
  overflow-wrap: anywhere;
  word-break: normal;
  line-break: strict;
}

@media (min-width: 768px) {
  body {
    font-size: 1.6rem;
  }
}

a {
  color: #000;
  text-decoration: none;
  cursor: pointer;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: bottom;
}

li {
  list-style: none;
}

main {
  overflow: hidden;
}

/* 部品
------------------------------*/
@media (max-width: 767px) {
  .no-sp {
    display: none;
  }
}

@media (min-width: 768px) {
  .no-pc {
    display: none;
  }
}

.container {
  padding: 12rem 0.5rem 0;
  max-width: 90rem;
  margin: 0 auto;
  position: relative;
  background: #fff;
}

@media (max-width: 767px) {
  .container {
    padding: 5rem 1rem 0;
  }
}

/* セクションタイトル */
.section-title {
  font-size: 2.4rem;
  color: #fff;
  padding: 1rem 0.5rem;
  position: relative;
  z-index: 1;
}

.section-title::before {
  content: "";
  height: 0.1rem;
  width: 15%;
  background: #fff;
  position: absolute;
  top: 50%;
  left: -15%;
}

.section-title::after {
  content: "";
  height: 100%;
  width: 220%;
  background: #050829;
  display: block;
  position: absolute;
  top: 0;
  right: 74%;
  z-index: -1;
}

@media (max-width: 767px) {
  .section-title {
    font-size: 1.8rem;
    padding: 1rem 2rem;
  }

  .section-title::before {
    display: none;
  }

  .section-title::after {
    width: 100%;
    right: 0;
  }
}

/* 外部リンクアイコン */
.ex-link::after {
  font-family: "bootstrap-icons";
  content: "\F1C5";
  font-weight: 900;
  font-size: 1.4rem;
  margin-left: 1rem;
}

/* PDFアイコン */
.a-pdf::after {
  font-family: "bootstrap-icons";
  content: "\F756";
  color: #004898;
  font-size: 1.6rem;
  padding-left: 1.6rem;
}

/* 前に戻る */
.return {
  display: block;
  margin: 3rem 0 0;
}

@media (max-width: 767px) {
  .return {
    margin: 2rem 0 0;
  }
}

.return::before {
  font-family: "bootstrap-icons";
  content: "\F12F";

}

/* ヘッダー
------------------------------*/
.header {
  position: fixed;
  top: 0;
  margin: 0 auto;
  width: 100%;
  z-index: 100;
  background-color: #fff;
  opacity: 0.9;
}

@media (max-width: 767px) {
  .header {
    position: fixed;
  }
}

.header-text {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  width: 120rem;
  height: 8rem;
  margin: 0 auto;
  padding: 1rem 3rem;
}

@media (max-width: 767px) {
  .header-text {
    height: 5rem;
    padding: 0.5rem 1rem;
  }
}

.header-logo a {
  display: flex;
  flex-direction: row;
  column-gap: 2rem;
  align-items: center;
}

.header-logo a:hover {
  text-decoration: none;
}

@media (max-width: 767px) {
  .header-logo a {
    column-gap: 1.5rem;
  }
}

.header-logo img {
  width: 13rem;
}

@media (max-width: 767px) {
  .header-logo img {
    width: 8rem;
  }
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: calc(24/18);
  text-align: center;
}

.logo-text .logo-text-en {
  font-size: 1.4rem;
  font-weight: 400;
}

@media (max-width: 767px) {
  .logo-text .logo-text-en {
    display: none;
  }
}

.logo-text .logo-text-jp {
  font-size: 1.8rem;
  font-weight: 500;
}

@media (max-width: 767px) {
  .logo-text .logo-text-jp {
    font-size: 1.4rem;
  }
}

.header-text p {
  font-size: 1.2rem;
}

/* ハンバーガーボタン */
@media (min-width: 768px) {
  .hamburger-button {
    display: none;
  }
}

@media (max-width: 767px) {
  .hamburger-button {
    color: #606060;
    position: fixed;
    top: 2.5rem;
    right: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

.hamburger-button i {
  line-height: 0;
  font-size: 2rem;
}

/* ハンバーガーメニュー
------------------------------------------ */
@media (max-width: 767px) {
  .hamburger-nav {
    position: fixed;
    z-index: 100;
    top: 5rem;
    left: 0;
    padding: 0 1.8rem 0.4rem;
    width: 100%;
    background-color: rgba(255, 255, 255, 1);
    text-align: left;
    opacity: 1;
  }

  .hamburger-nav-list li {
    font-size: 1.6rem;
    line-height: calc(28 / 16);
    border-top: 0.1rem solid #777;
    padding: 0.2rem 0.5rem 0.3rem;
  }
}

/* 開いている状態 */
@media (max-width: 767px) {
  .hamburger-nav-active {
    opacity: 1;
    visibility: visible;
  }
}

/* ナビ */
.nav-menu {
  height: 4rem;
  border-top: 0.1rem solid #333;
  border-bottom: 0.1rem solid #333;
}

.nav-menu ul {
  font-size: 1.5rem;
  font-weight: 400;
  max-width: 90rem;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  padding: 0.5rem;
  margin: 0 auto;
}

.nav-menu ul li {
  position: relative;
}

.nav-item a {
  text-decoration: none; /* デフォルトの下線を非表示にする */
  color: #000; /* 文字色 */
  background-image: linear-gradient(90deg, #000, #000); /* 線の色 */
  background-repeat: no-repeat;
  background-position: left bottom; /* 線の起点を左・下に設定 */
  background-size: 0 0.1rem; /* 線の横幅を0、縦幅を1pxに */
  transition: background-size 0.3s; /* 線を伸ばすアニメーション実行時間を指定 */
}

.nav-item a:hover {
  text-decoration: none;
  background-size: 100% 0.1rem; /* 線の横幅を100%にする */
}


/* フッター
------------------------------*/
.footer {
  color: #fff;
  background-color: #050829;
  padding: 1.6rem 0;
}

@media (max-width: 767px) {
  .footer {
    padding: 1.6rem 0.5rem;
  }
}

.footer a {
  color: #fff;
}

.footer-up {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
}

@media (max-width: 767px) {
  .footer-up {
    flex-direction: column;
    row-gap: 1.6rem;
    text-align: center;
  }
}

.footer-logo {
  width: 30rem;
}

@media (max-width: 767px) {
  .footer-logo {
    width: auto;
  }
}

.footer-logo-en {
  font-size: 1.2rem;
}

@media (max-width: 767px) {
  .footer-logo-en {
    font-size: 1rem;
  }
}

.footer-logo-jp {
  font-size: 2rem;
  font-weight: 500;
}

@media (max-width: 767px) {
  .footer-logo-jp {
    font-size: 1.6rem;
  }
}

.footer-add {
  font-size: 1.4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  row-gap: 0.8rem;
}

@media (max-width: 767px) {
  .footer-add {
    font-size: 1.2rem;
  }
}

.copyright {
  display: block;
  font-size: 1.2rem;
  text-align: center;
  padding-top: 1rem;
}

@media (max-width: 767px) {
  .copyright {
    font-size: 0.8rem;
  }
}