@charset "utf-8";
/**********This sheet contains styles of**************************************************/
/**********header, footer, web fonts, color and elemetnts of body, a, headings**************************************************/
@import url('https://fonts.googleapis.com/css2?family=M+PLUS+1p:wght@800&display=swap');
@import url("https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200");
/*color*/
body {
  --c-bg-base: whitesmoke;
  --c-bg-neutral: gainsboro;
  --c-bg-highlight: #dbcce9;
  --c: #333;
  --c-heading: #440088;
  --c-border: silver;
  --c-hover: lightgray;
  --main-color: #440088;
  --text-link: #0069c2;
}
/*
@media (prefers-color-scheme: dark) {
  body {
    --c-bg-base: #333;
    --c-bg-neutral: #222;
    --c-bg-highlight: #604a8d;
    --c: #fff;
    --c-heading: #fff;
    --c-border: mediumpurple;
    --c-hover: #666;
  }
  a {
    color: #8cb4ff;
  }
}
*/
:root,
.darkmode body {
 --c-bg-base: #333;
 --c-bg-neutral: #222;
 --c-bg-highlight: #604a8d;
 --c: #fff;
 --c-heading: #fff;
 --c-border: dimgray;
 --c-hover: #666;
 --main-color: mediumpurple;
 --text-link: #8cb4ff;
}
a {
  color: var(--text-link);
  word-wrap: break-word;
}
/*style for all of page*/
body{
  margin: 0;
  font-family: sans-serif;
  background-color: var(--c-bg-base);
}
header ul, footer ul{
  list-style: none;
  padding: 0;
}
h1 ,h2 {
  text-align: center;
  font-family: 'M PLUS 1p', sans-serif;
  color: var(--c-heading);
}
main {
  color: var(--c);
  line-height: 1.6;
}
#header a {
  text-decoration: none;
  color: inherit;
}
svg {
  fill: var(--c);
  vertical-align: inherit;
}
@media screen and (max-width: 767px) {
  h1, h2 {
    font-size: 1.5rem
  }
  h3 {
    font-size: 1.2rem;
  }
  h1, h2, h3 {
    margin: .5em 0;
  }
  main {
    line-height: 1.5;
  }
}

/**********header**************************************************/
/*style for header on pc*/
@media screen and (min-width: 768px) {
  header {
    width: 100%;
    /*spacer for included header "height: 144px" had been deleted*/
    background: linear-gradient(to left, #c3dab8, 20%, #6a4390);
    color: #fff;
    box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.5);
    position: relative;
    z-index: 9999;
  }
  /*style of header logo*/
  .header__logo {
    width: 100%;
    padding: 10px 0;
  }
  .header__logo a {
    display: block;
  }
  .header__logo-ja {
    display: block;
    width: max-content;
    margin: 0 auto;
    text-align: center;
    font-family: 'Noto Serif JP', "游明朝", serif;
    font-size: 2em;
    letter-spacing: 0.2em;
  }
  .header__logo-ja img {
    height: 30px;
    vertical-align: baseline;
  }
  .header__logo-en {
    display: block;
    margin: 0;
    text-align: center;
    font-family: "Arial", sans-serif;
    font-size: 0.6em;
    letter-spacing: 0.2em;
  }
  /*hide nav button on pc*/
  #header__nav-button {
    display: none;
  }
  /*style of nav bar*/
  #header__nav {
    width: 100%;
    height: 4em;
    font-family: 'M PLUS 1p', sans-serif;
    color: #fff;
    border-bottom: 1px solid #fff;
  }
  .header__list {
    height: 100%;
    width: 80%;
    max-width: 1000px;
    display: flex;
    justify-content: flex-end;
    margin: 0 auto;
  }
  .selectedNav {
    border-bottom: 3px solid #fff;
  }
  .header__item {
    flex: 1 1;
    border-top: 1px solid rgb(255, 255, 255, 0.25);

    display: flex;
  }
  .header__item-link{
    flex: 1 1;
    padding: 0;
    border-bottom: 3px solid rgb(255, 255, 255, 0);
    transition: .2s;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .header__list small {
    color: #fff;
    font-size: 0.5em;
  }
  .header__item-link:hover {
    opacity: .5;
    border-bottom: 3px solid #fff;
    transition: .2s;
  }
/*darkmode
:root,
    .darkmode #header__nav {
      color: #fff;
      background-color: #555;
      border-bottom: 2px solid  #fff;
    }
    .darkmode .header__item {
      border-left: 1px solid mediumpurple;
    }
    .darkmode .header__item:last-child {
      border-right: 1px solid mediumpurple;
    }
    .darkmode .header__list small {
      color: #ccc;
    }
darkmode END*/
}
/*END of style for header on pc*/

/*style for header on phone*/
@media screen and (max-width: 767px) {
  header {
    width: 100%;
    /*spacer for included header "height: 56px;" had been deleted*/
    color: #440088;
    background-color: whitesmoke;
    box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.5);

    position: relative;
    z-index: 9999;
  }
  .header__container {
    display: flex;
    /*put it for centering button. container height depend on logo height*/
    align-items: center;
  }
  /*header logo*/
  .header__logo {
    box-sizing: border-box;
    width: 100%;
    height: 80px;
    padding: 0 .5em;
    border-bottom: 2px solid white;

    color: white;
    background: linear-gradient(to right, #c3dab8, 20%, #6a4390);

    display: flex;
    align-items: center;
  }
  .header__logo a {
    flex-grow: 1;
  }
  .header__logo-ja {
    display: block;
    margin: 0;
    text-align: center;
    /*
    font-family: 'Noto Serif JP', "游明朝", serif;
    font-size: 1.5em;
    letter-spacing: 0.2em;
    */
  }
  .header__logo-ja img {
    display: block;
    height: 24px;
    margin: 4px auto;
    padding-bottom: 4px;
  }
  .header__logo-en {
    display: block;
    margin: 0;
    text-align: center;
    font-family: "Arial", sans-serif;
    font-size: 10px;
    letter-spacing: 0.2em;
  }
  /*nav button*/
  #header__nav-button {
    width: 40px;
    height: 40px;
    background-color: transparent;
    /*cancel default button sytle*/
    border: none;
    padding: 0;
    /*avoid to be covered by nav*/
    z-index: 1;
  }
  .header__nav-button-line {
    display: block;
    position: relative;
    width: 60%;
    height: 2px;
    margin: 0 auto;
    background-color: white;
  }
  .header__nav-button-line::before , .header__nav-button-line::after {
    content: "";
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: white;
  }
  .header__nav-button-line::before {
    transform: translateY(-10px);
  }
  .header__nav-button-line::after {
    transform: translateY(10px);
  }
  #header__nav-button.active .header__nav-button-line {
    background-color: transparent;
  }
  #header__nav-button.active .header__nav-button-line::before {
    background-color: white;
    transform: rotate(45deg);
  }
  #header__nav-button.active .header__nav-button-line::after {
    background-color: white;
    transform: rotate(-45deg);
  }
  /*style of nav*/
  /*
  #header__nav {
    position: absolute;
    top: -350px; translateをここでマイナスにして下で0は？？
    right: 0;
    width: 50%;
    height: 300px;
    background-color: whitesmoke;
    box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.5);
    font-family: 'M PLUS 1p', sans-serif;
    color: #440088;
    transition: .5s;
    z-index: 10;
  }
  .header__nav-open {
    transform: translateY(450px);
  }
  */
  #header__nav {
    position: absolute;
    top: 5em;
    right: 0;
    width: 100%;
    height: 90vh;
    /*background-color: rgba(0, 0, 0, 0.1);*/
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0));
    font-family: 'M PLUS 1p', sans-serif;
    color: #440088;
    transition: .25s;
    transform: translateX(-100%);
    z-index: 2;
  }
  #header__nav.header__nav-open {
    transform: translateX(0);
  }
  .header__list {
    background-color: whitesmoke;
    box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.5);
    top: 100px;

    margin: 2em 1em;

    border-radius: 10px;
    padding: 2em;
    display: flex;
    flex-direction: column;

    z-index: 9999;
  }
  .selectedNav {
    border-left: 6px solid var(--c-bg-highlight);
    padding-left: 6px;
  }
  .header__item {
    flex: 1 1;
    display: flex;
    border-top: 1px solid silver;
  }
  .header__item:last-child {
    border-bottom: 1px solid silver;
  }
  .header__item-link {
    display: flex;
    flex: 1 1;
    flex-direction: column;
    justify-content: center;
    padding: 1em 0;
  }
  .header__list small {
    color: #333;
    font-size: 0.5em;
  }
  :root,
  .darkmode .header__list {
    color: #fff;
    background-color: #555;
  }
  .darkmode .header__list small {
    color: #ccc;
  }

}
/*END of style for header on phone*/
/**********footer**************************************************/
/*style for footer*/
#footer {
  background: linear-gradient(to top, #c3dab8, 5%, #6a4390);
  color: #fff;
  box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.5);
}
#footer a {
  text-decoration: none;
  color: inherit;
}
.footer__logo {
  padding-top: 2em;
}
.footer__logo img {
  display: block;
  box-sizing: border-box;
  margin: 0 auto;
  padding: 2em;
  height: 12rem;
}
.footer__wrapper {
  display: flex;
  justify-content: center;

  margin: 0 auto;
  padding: 2em 0;
  flex-wrap: wrap;
}
.footer__content {
  padding: 0 1em;
}
/*.footer__content:first-child {
  border-right: 1px solid silver;
}*/
.footer__content-index {
  font-weight: bold;
}
.footer__content-list
.footer__item svg {
  fill: white;
}
.footer__copyright {
  display: block;
  text-align: center;
  padding-bottom: 3rem;
  font-size: 0.7em;
}
/*onoffswitch original css*/
.onoffswitch-checkbox {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}
.onoffswitch-label {
    display: block;
    box-sizing: content-box;
    height: 1.5rem; width: 3rem;
    border-radius: 9999px;
    border: 2px solid silver;
    background-color: #9E9E9E;
    margin: 0.2em auto;
}
.onoffswitch-checkbox:checked + .onoffswitch-label {
    background-color: #FFF;
}
.onoffswitch-label:before {
    content: "";
    display: block;
    height: 1.5rem; width: 1.5rem;
    border-radius: 9999px;
    background: #FFFFFF;
    transition: .2s;
}
.onoffswitch-checkbox:checked + .onoffswitch-label:before {
    transform: translateX(1.5rem);
    background-color: mediumpurple;
    transition: .2s;
}
/*onoffswitch https://proto.io/freebies/onoff/
.onoffswitch {
    position: relative; width: 55px;
    margin: 0 auto;
    -webkit-user-select:none; -moz-user-select:none; -ms-user-select: none;
}
.onoffswitch-checkbox {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}
.onoffswitch-label {
    display: block; overflow: hidden; cursor: pointer;
    height: 20px; padding: 0; line-height: 20px;
    border: 0px solid #FFFFFF; border-radius: 30px;
    background-color: #9E9E9E;
}
.onoffswitch-label:before {
    content: "";
    display: block; width: 30px; height: 30px;
    background: #FFFFFF;
    position: absolute; bottom: -5px;
    right: 31px;
    border-radius: 30px;
    box-shadow: 0 6px 12px 0px #757575;
}
.onoffswitch-checkbox:checked + .onoffswitch-label {
    background-color: #42A5F5;
}
.onoffswitch-checkbox:checked + .onoffswitch-label, .onoffswitch-checkbox:checked + .onoffswitch-label:before {
   border-color: #42A5F5;
}
.onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-inner {
    margin-left: 0;
}
.onoffswitch-checkbox:checked + .onoffswitch-label:before {
    right: 0px;
    background-color: #2196F3;
    box-shadow: 3px 6px 18px 0px rgba(0, 0, 0, 0.2);
}
*/