@charset "UTF-8";
@import url("https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;700&display=swap");
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font: inherit;
  font-size: 100%;
  vertical-align: baseline;
}

html {
  line-height: 1;
}

ol, ul {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

caption, th, td {
  text-align: left;
  font-weight: normal;
  vertical-align: middle;
}

q, blockquote {
  quotes: none;
}

q:before, q:after, blockquote:before, blockquote:after {
  content: "";
  content: none;
}

a img {
  border: none;
}

article, aside, details, figcaption, figure, footer, header, hgroup, main, menu, nav, section, summary {
  display: block;
}

:root {
  --basecolor: #000000;
  --navcolor: #111111;
  --secondcolor: #0c0c0c;
  --fontcolor: #FFFFFF;
  --accentcolor: #840000;
  --accentcolor-light: #e20000;
  --subcolor: #faac32;
  --basemargin: 20px;
  --marginTop: 20px;
  --marginTop-middle: 30px;
  --marginTop-wide: 60px;
  --marginTop-extra: 120px;
  --innerwidth: 1064px;
  --mobilewidth: 750px;
  --mobilewidthNum: 750;
  --oneVw: ( 100 / var(--mobilewidthNum) );
}
@media screen and (max-width: 750px) {
  :root {
    --marginTop: calc( 100 / var(--mobilewidthNum) * 20 * 1vw );
    --marginTop-middle: calc( 100 / var(--mobilewidthNum) * 30 * 1vw );
    --marginTop-wide: calc( 100 / var(--mobilewidthNum) * 60 * 1vw );
    --marginTop-extra: calc( 100 / var(--mobilewidthNum) * 120 * 1vw );
  }
}

html {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  width: 100%;
  min-width: var(--innerwidth);
  height: 100%;
  margin: 0;
  padding: 0;
  color: var(--fontcolor);
  background-color: var(--basecolor);
  font-family: "Noto Serif JP", serif;
  font-size: 16px;
}
@media screen and (max-width: 750px) {
  body {
    min-width: 100%;
  }
}
@media screen and (max-width: 750px) {
  body {
    font-size: 3.7333333333vw;
  }
}
body * {
  box-sizing: border-box;
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "palt";
  -webkit-overflow-scrolling: touch;
  overflow-scrolling: touch;
}
body *::-moz-selection {
  background-color: var(--accentcolor);
  color: var(--fontcolor);
}
body *::selection {
  background-color: var(--accentcolor);
  color: var(--fontcolor);
}

.stop-scrolling {
  overflow-y: hidden !important;
}

a {
  display: inline-block;
  color: var(--fontcolor);
  text-decoration: none;
}
a.hover {
  transition: 0.2s;
}
a.hover:hover {
  opacity: 0.7;
}

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

video {
  display: inline-block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

svg {
  display: block;
  width: 100%;
  vertical-align: bottom;
}

input,
button,
textarea,
select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  border-radius: 0;
  outline: none;
  font-size: inherit;
  font-family: inherit;
}

.is-pc {
  display: inherit;
}

.is-sp {
  display: none;
}

@media screen and (max-width: 750px) {
  .is-pc {
    display: none;
  }
  .is-sp {
    display: inherit;
  }
}
.mt0 {
  margin-top: 0 !important;
}

.pt0 {
  padding-top: 0 !important;
}

.mt60 {
  margin-top: var(--marginTop-wide);
}

.humberger__box {
  pointer-events: none;
  width: 40px;
  height: 40px;
  padding: 7px;
}
.humberger__box span {
  display: block;
  background-color: #FFF;
  height: 1px;
  transition: 0.2s;
}
.humberger__box span:nth-child(1) {
  width: 30px;
}
.humberger__box span:nth-child(2) {
  width: 20px;
  margin: 10px 0;
}
.humberger__box span:nth-child(3) {
  width: 25px;
}
.humberger.is-open .humberger__box span:nth-child(1) {
  width: 0;
}
.humberger.is-open .humberger__box span:nth-child(2) {
  width: 30px;
}
.humberger.is-open .humberger__box span:nth-child(3) {
  width: 0;
}

.btn {
  background-color: var(--accentcolor);
  padding: 8px;
  min-width: 136px;
  text-align: center;
  border-radius: 4px;
  font-weight: bold;
}

.btncircle {
  display: inline-block;
  padding: 15px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

.logo {
  border-right: 1px solid rgba(255, 255, 255, 0.25);
  margin-right: var(--basemargin);
  padding-right: var(--basemargin);
}

.header {
  height: 68px;
}
.header__fix {
  position: fixed;
  z-index: 111;
  top: 0;
  width: 100%;
  height: 68px;
  background-color: var(--basecolor);
}
.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--innerwidth);
  width: 100%;
  padding: 14px var(--basemargin);
  margin: auto;
}
@media screen and (max-width: 750px) {
  .header__inner {
    width: 100%;
    max-width: 100%;
  }
}
.header__left {
  display: flex;
  align-items: center;
}
.header__left ul {
  display: flex;
}
.header__left ul li {
  margin-right: var(--basemargin);
}
.header__left ul li a {
  transition: 0.2s;
}
.header__left ul li a:hover {
  color: var(--accentcolor-light);
}
.header__right {
  display: flex;
  align-items: center;
}
.header__right a {
  margin-left: 14px;
}

@keyframes animation {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
    /*アニメーションを終了するときのCSSを記述*/
  }
}
.nav {
  display: none;
  opacity: 0;
  position: absolute;
  top: 68px;
  left: 0;
  right: 0;
  transition: 0.2s;
  overflow: hidden;
  background-color: var(--navcolor);
  padding: var(--marginTop-wide) 0;
}
.nav.is-open {
  display: block;
  animation: animation forwards 0.3s ease-in alternate;
}
.nav__inner {
  margin: auto;
  padding: 0 var(--basemargin);
  width: 100%;
}
.nav__item a {
  display: block;
  padding: var(--marginTop-middle) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}
.nav__link {
  margin-top: var(--marginTop-middle);
  display: flex;
  align-items: center;
}
.nav__link a {
  margin-right: var(--marginTop);
}

.book {
  position: fixed;
  z-index: 110;
  bottom: var(--basemargin);
  right: var(--basemargin);
}
@media screen and (max-width: 750px) {
  .book {
    bottom: 0;
    left: 0;
    width: 100%;
  }
  .book img {
    width: 100%;
  }
}

.footer {
  margin-top: var(--marginTop-wide);
  background-color: var(--secondcolor);
}
.footer__inner {
  max-width: var(--innerwidth);
  width: 100%;
  padding: 30px var(--basemargin);
  margin: auto;
  text-align: center;
}
@media screen and (max-width: 750px) {
  .footer__inner {
    max-width: 100%;
    width: 100%;
    padding: 4vw var(--basemargin) 16vw;
  }
}

.copywrite {
  margin-top: 30px;
}
@media screen and (max-width: 750px) {
  .copywrite {
    margin-top: 4vw;
  }
}