@charset "UTF-8";
@-webkit-keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@-webkit-keyframes flash {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}
@keyframes flash {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}
/*============================================================
	Base
============================================================*/
html,
body {
  width: 100%;
  overflow-x: hidden;
}
@media only screen and (max-width: 767px) {
  html,
body {
    min-height: 100vh;
  }
}

html {
  font-family: "游ゴシック体", YuGothic, "游ゴシック", "Yu Gothic", sans-serif;
  font-size: 25px;
  font-weight: 700;
  font-style: normal;
  line-height: 1;
  letter-spacing: 0.1em;
  -webkit-font-feature-settings: "palt";
     -moz-font-feature-settings: "palt";
          font-feature-settings: "palt";
  color: #0081cc;
  word-wrap: break-word;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
@media only screen and (max-width: 767px) {
  html {
    font-size: 4.2666666667vw;
    -webkit-text-size-adjust: 100%;
  }
}
@media print, screen and (min-width: 768px) and (max-width: 1280px) {
  html {
    font-size: 1.953125vw;
  }
}
html * {
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
}

body {
  position: relative;
  -webkit-animation: fadeIn 1.5s ease 0s 1 normal;
          animation: fadeIn 1.5s ease 0s 1 normal;
}
body.fixed {
  position: fixed;
  width: 100%;
  height: 100%;
  left: 0;
}
@media only screen and (max-width: 767px) {
  body.fixed {
    height: -webkit-fill-available;
    height: 100vh;
    height: 100dvh;
    height: calc(var(--vh, 1vh) * 100);
  }
}

img {
  width: 100%;
  height: auto;
}
img[src$=".svg"] {
  max-width: 100%;
}

a,
a * {
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  color: #000;
  text-decoration: none;
  outline: none;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}

a:hover,
a:hover img {
  opacity: 0.75;
}

header,
main,
article,
section,
footer {
  width: 100%;
}

/*============================================================
	Commmon
============================================================*/
@media only screen and (max-width: 767px) {
  .pc {
    display: none !important;
  }
}

@media print, screen and (min-width: 768px) {
  .sp {
    display: none !important;
  }
}

.inner {
  position: relative;
  width: 83.4375vw;
  max-width: 1068px;
  margin: auto;
}
@media only screen and (max-width: 767px) {
  .inner {
    width: 95.4%;
    max-width: 190.9333333333vw;
  }
}
.inner::before, .inner::after {
  position: absolute;
  content: "";
  background-repeat: no-repeat;
  background-size: contain;
}

/* Slide Animation
-------------------------------------------------*/
.slide,
.slide_list_item {
  -webkit-transition: 0.5s;
  transition: 0.5s;
  opacity: 0;
}
.slide.show,
.slide_list_item.show {
  -webkit-transform: translateX(0) !important;
          transform: translateX(0) !important;
  opacity: 1;
}

/* Scroll Animation
-------------------------------------------------*/
.scroll_item {
  opacity: 0;
  -webkit-transition: all ease-in-out 0.6s;
  transition: all ease-in-out 0.6s;
}
.scroll_item.scrollActive {
  opacity: 1;
  -webkit-transform: translate(0) scale(1);
          transform: translate(0) scale(1);
}

.fadeTop {
  -webkit-transform: translate(0, 50px);
          transform: translate(0, 50px);
}
.fadeTop.scrollActive {
  -webkit-transform: translate(0, 0);
          transform: translate(0, 0);
}

/*============================================================
	Layout
============================================================*/
/*  header
-------------------------------------------------*/
header {
  position: fixed;
  top: -10.8rem;
  left: 0;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
@media only screen and (max-width: 767px) {
  header {
    top: -7.5rem;
  }
}
header.is-show {
  top: 0;
  opacity: 1;
  visibility: visible;
}
header .inner a {
  display: block;
  width: 20.4119850187%;
  margin-left: auto;
}
@media only screen and (max-width: 767px) {
  header .inner a {
    width: 39.3854748603%;
    margin-right: 2.7932960894%;
  }
}

/*  mv
-------------------------------------------------*/
#mv {
  width: 96%;
  margin: 2% auto 0;
  background-color: #fff000;
}
@media print, screen and (min-width: 768px) {
  #mv {
    border-radius: 0.56rem;
    padding: 2.4rem 0 3.6rem;
  }
}
@media only screen and (max-width: 767px) {
  #mv {
    border-radius: 0.25rem;
    padding: 1.875rem 0;
  }
}
#mv .inner {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -webkit-flex-direction: column;
     -moz-box-orient: vertical;
     -moz-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
#mv .inner h1 {
  -webkit-animation: flash 1s linear infinite;
          animation: flash 1s linear infinite;
  position: relative;
  line-height: 1.2;
  color: #000;
  text-align: left;
}
@media print, screen and (min-width: 768px) {
  #mv .inner h1 {
    font-size: 2.8rem;
    margin: 0 auto 2rem;
    padding-left: 4.4rem;
  }
}
@media only screen and (max-width: 767px) {
  #mv .inner h1 {
    font-size: 2.5rem;
    margin: 0 auto 1.875rem;
    padding-top: 3.5rem;
  }
}
#mv .inner h1::before {
  position: absolute;
  content: "";
  background: url(../img/icon-warning.svg) no-repeat;
  background-size: 100%;
}
@media print, screen and (min-width: 768px) {
  #mv .inner h1::before {
    width: 3.1rem;
    height: 2.8rem;
    left: 0.6rem;
    top: 0.3rem;
  }
}
@media only screen and (max-width: 767px) {
  #mv .inner h1::before {
    width: 2.5rem;
    height: 2.25rem;
    left: 50%;
    -webkit-transform: translateX(-50%);
            transform: translateX(-50%);
    top: 0;
  }
}
#mv .inner p {
  width: 82.0224719101%;
  font-size: 1.2rem;
  text-align: left;
  line-height: 1.8;
  margin: auto;
}
@media only screen and (max-width: 767px) {
  #mv .inner p {
    width: 81.3333333333vw;
    font-size: 1rem;
  }
}
#mv .inner figure {
  display: block;
  width: 73.6891385768%;
  -webkit-transform: translateX(-31.48rem);
          transform: translateX(-31.48rem);
}
@media only screen and (max-width: 767px) {
  #mv .inner figure {
    width: 81.3333333333vw;
  }
}
#mv .inner figure.mv_img {
  width: 39.606741573%;
  margin: 3rem auto 0.6rem;
  -webkit-transform: translateX(16.92rem);
          transform: translateX(16.92rem);
}
@media only screen and (max-width: 767px) {
  #mv .inner figure.mv_img {
    width: 49.8666666667vw;
    margin: 3rem auto 3.4375rem;
  }
}

/*  links
-------------------------------------------------*/
#links {
  padding-top: 2rem;
}
@media only screen and (max-width: 767px) {
  #links {
    padding-top: 1.875rem;
  }
}
#links ul {
  width: 40.625vw;
  margin: auto;
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-wrap: wrap;
      -ms-flex-wrap: wrap;
          flex-wrap: wrap;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
     -moz-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
@media only screen and (max-width: 767px) {
  #links ul {
    width: 54.4vw;
  }
}
#links ul li {
  display: block;
  background: #fff000;
  text-align: center;
  font-size: 1.32rem;
  width: 48.0769230769%;
  height: 3.68rem;
  line-height: 3.68rem;
  border-radius: 0.64rem;
}
@media only screen and (max-width: 767px) {
  #links ul li {
    width: 100%;
    height: 4.375rem;
    line-height: 4.375rem;
    font-size: 1.5625rem;
    border-radius: 0.5rem;
  }
  #links ul li:first-child {
    margin-bottom: 1.25rem;
  }
}
#links ul li a {
  display: block;
  color: #000;
}
#links ul li.free {
  margin-bottom: 1rem;
  background: #fff000;
  color: #000;
  width: 100%;
  font-size: 1.68rem;
}
@media only screen and (max-width: 767px) {
  #links ul li.free {
    font-size: 1.3125rem;
    margin-bottom: 0.8125rem;
  }
}
#links ul li.free a {
  color: #000;
}

/*  これってYDK？
-------------------------------------------------*/
#ydk {
  padding: 7.2rem 0;
}
@media only screen and (max-width: 767px) {
  #ydk {
    padding: 6.25rem 0;
  }
}
@media only screen and (max-width: 767px) {
  #ydk .inner {
    width: 69.3333333333vw;
    max-width: 520px;
  }
}
#ydk .inner h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 3.2rem;
}
@media only screen and (max-width: 767px) {
  #ydk .inner h2 {
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
  }
}
#ydk .inner h2 strong {
  font-size: 2.72rem;
  position: relative;
}
@media only screen and (max-width: 767px) {
  #ydk .inner h2 strong {
    font-size: 2.125rem;
  }
}
#ydk .inner h2 strong small {
  position: absolute;
  font-size: 0.64rem;
  left: 0;
  top: -1em;
}
@media only screen and (max-width: 767px) {
  #ydk .inner h2 strong small {
    font-size: 0.5rem;
  }
}
#ydk .inner > figure {
  width: 24.3445692884%;
  margin: auto;
}
@media only screen and (max-width: 767px) {
  #ydk .inner > figure {
    width: 50%;
  }
}
@media print, screen and (min-width: 768px) {
  #ydk .inner ul {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
       -moz-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
    margin-top: 2.8rem;
  }
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul {
    margin-top: 4.375rem;
  }
}
@media print, screen and (min-width: 768px) {
  #ydk .inner ul li {
    width: 30.5243445693%;
  }
}
@media print, screen and (min-width: 768px) {
  #ydk .inner ul li.slide_list_item {
    -webkit-transform: translateX(-30.5243445693%);
            transform: translateX(-30.5243445693%);
  }
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li.slide_list_item {
    -webkit-transform: translateX(-100%);
            transform: translateX(-100%);
  }
}
#ydk .inner ul li > figure {
  width: 100%;
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -webkit-flex-direction: column;
     -moz-box-orient: vertical;
     -moz-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  position: relative;
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li > figure {
    margin-bottom: 2.1875rem;
    padding-bottom: 5.625rem;
  }
}
#ydk .inner ul li > figure figcaption {
  font-size: 0.92rem;
  line-height: 1.6;
  text-align: left;
  margin-bottom: 2rem;
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li > figure figcaption {
    font-size: 1.125rem;
    margin-bottom: 1.875rem;
  }
}
#ydk .inner ul li > figure img {
  width: 59.8159509202%;
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li > figure img {
    width: 60%;
  }
}
#ydk .inner ul li a {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
     -moz-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  width: 100%;
  height: 7rem;
  background: #fff000;
  padding: 0 0.8rem;
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li a {
    height: 8.75rem;
    padding: 0 0.9375rem;
    margin-top: 2.8125rem;
  }
}
#ydk .inner ul li a p {
  font-size: 1.6rem;
  line-height: 1.25;
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li a p {
    font-size: 1.9375rem;
  }
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li:first-child {
    margin-bottom: 2.9375rem;
  }
}
#ydk .inner ul li:first-child a figure {
  width: 3.8rem;
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li:first-child a figure {
    width: 4.75rem;
  }
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li:nth-child(2) {
    margin-bottom: 2.9375rem;
  }
}
#ydk .inner ul li:nth-child(2) a figure {
  width: 3.12rem;
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li:nth-child(2) a figure {
    width: 3.875rem;
    margin-left: 0.3125rem;
  }
}
/*#ydk .inner ul li:last-child > figure img {
  width: 68.7116564417%;
}:*/
#ydk .inner ul li:first-child > figure img {
  width: 68.7116564417%;
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li:first-child > figure img {
    width: 60%;
  }
  #ydk .inner ul li:last-child > figure img {
    width: 69.2307692308%;
  }
}
#ydk .inner ul li:last-child a figure {
  width: 4.32rem;
}
@media only screen and (max-width: 767px) {
  #ydk .inner ul li:last-child a figure {
    width: 5.375rem;
  }
}
#ydk .inner > p {
  font-size: 1.64rem;
  text-align: center;
  line-height: 1.46;
  margin-top: 2.4rem;
}
@media only screen and (max-width: 767px) {
  #ydk .inner > p {
    font-size: 1.25rem;
    margin-top: 3.75rem;
    white-space: nowrap;
  }
}

/*  YDK学習アプリ
-------------------------------------------------*/
#app {
  width: 96%;
  margin: 2% auto 0;
  background-color: #fefbb5;
  text-align: center;
}
@media print, screen and (min-width: 768px) {
  #app {
    border-radius: 0.56rem;
    padding: 3.2rem 0;
  }
}
@media only screen and (max-width: 767px) {
  #app {
    border-radius: 0.25rem;
    padding: 3.125rem 0;
  }
}
#app h2 {
  font-size: 2.6rem;
  margin-bottom: 2rem;
}
@media only screen and (max-width: 767px) {
  #app h2 {
    font-size: 2rem;
    margin-bottom: 2.5rem;
  }
}
#app p {
  color: #000;
  font-size: 1.04rem;
  line-height: 1.8;
}
@media only screen and (max-width: 767px) {
  #app p {
    font-size: 0.9375rem;
  }
}
@media print, screen and (min-width: 768px) {
  #app ul {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
       -moz-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    margin-top: 3.6rem;
  }
}
@media only screen and (max-width: 767px) {
  #app ul {
    margin-top: 3.125rem;
  }
}
#app ul li {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -webkit-flex-direction: column;
     -moz-box-orient: vertical;
     -moz-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
@media print, screen and (min-width: 768px) {
  #app ul li:not(:last-child) {
    margin-right: 14.0449438202%;
  }
}
@media only screen and (max-width: 767px) {
  #app ul li:not(:last-child) {
    margin-bottom: 3.75rem;
  }
}
#app ul li h3 {
  font-size: 1.52rem;
  margin-bottom: 1.8rem;
}
@media only screen and (max-width: 767px) {
  #app ul li h3 {
    font-size: 1.4375rem;
  }
}
#app ul li figure {
  width: 7rem;
  margin-bottom: 1.8rem;
}
@media only screen and (max-width: 767px) {
  #app ul li figure {
    width: 6.5625rem;
  }
}
#app ul li a {
  display: block;
  width: 4.8rem;
}
@media only screen and (max-width: 767px) {
  #app ul li a {
    width: 7.5rem;
  }
}
#app ul li a:last-child {
  width: 5.12rem;
  margin-top: 0.88rem;
}
@media only screen and (max-width: 767px) {
  #app ul li a:last-child {
    width: 8rem;
    margin-top: 1.375rem;
  }
}

/*  footer
-------------------------------------------------*/
footer {
  padding: 4.8rem 0;
}
@media only screen and (max-width: 767px) {
  footer {
    padding: 5rem 0;
  }
}
footer a {
  display: block;
  width: 29.140625%;
  margin: 0 auto 3.2rem;
}
@media only screen and (max-width: 767px) {
  footer a {
    width: 64.8vw;
    margin: 0 auto 3.125rem;
  }
}
footer figure {
  width: 22.1875%;
  margin: auto;
}
@media only screen and (max-width: 767px) {
  footer figure {
    width: 49.3333333333vw;
  }
}