@charset "UTF-8";
/* PC用設定 ーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーー */
:root {
  --font-mincho: "Yu Mincho", "Hiragino Mincho ProN", "serif";
  --font-gothic: "hiragino-kaku-gothic-pron", sans-serif;
  --main-color: ;
  --point-color: ;
  --brand-color: 157, 21, 61;
}
* {
  box-sizing: border-box;
  font-feature-settings: "palt";
  padding: 0;
}

main {
  width: 100%;
  font-family: var(--font-mincho);
}

  /*
  input[type="checkbox"] {display: none;}
  */

.annotation {
  font-family: var(--font-gothic);
}


/* ↓ Top ↓ --------------------------------------------------- */
#top {
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
  margin-bottom: -5em;
}




/* ↓ movie ↓ --------------------------------------------------- */
#movie {padding: 4.6em 0 5em;}
.movie-box {
  width: 45%;
  margin: 0 auto;
  border: solid 3px rgba(var(--brand-color), 1);
  position: relative;
  line-height: 0;
}
video {width: 100%;}

#st-movie {
  position: absolute;
  width: 47%;
  top: 100%;
  left: 100%;
  transform: translate(-50%, -21%);
}





/* ↓ approach ↓ --------------------------------------------------- */
#approach {
  width: 62%;
  display: inline-block;
  vertical-align: middle;
}

/* ↓ howto ↓ --------------------------------------------------- */
#howto {
  width: 26%;
  display: inline-block;
  vertical-align: middle;
  margin: 2em 0 0 1em;
  border-radius: 1em;
}

#howto > .content {position: relative;}

#howto-movie-label {
  position: absolute;
  width: 74%;
  top: 35%;
  left: 50%;
  transform: translateX(-50%);
}

.youtube {
  display: none;
  position: fixed;
  z-index: 200;
  line-height: 0;
  top: 50%;
  left: 10vw;
  transform: translateY(-50%);
}
.youtube .content {
  position: relative;
  background-color: rgba(var(--brand-color), 1);
  border-radius: 10px;
  width: 80vw;
  height: 0;
  padding-top: calc(56.25% + 26px);
}
.youtube .content iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: calc(100% - 14px);
  height: calc(100% - 34px);
  margin: 27px 7px;
}

.youtube .close-button {
  position: absolute;
  width: 17px;
  height: 17px;
  color: white;
  font-size: 17px;
  line-height: 1em;
  text-align: center;
  top: 6px;
  right: 9px;
  border: solid 0.5px white;
}

#movie-button:checked ~ .youtube {
  display: block;
}


/* ↓ return ↓ --------------------------------------------------- */
#return {
  position: fixed;
  bottom: 30px;
  right: 30px;
  display: grid;
  z-index: 100;
}
#return div {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background-color: rgba(var(--brand-color), 1);
  border: solid 0.5px white; 
  display: grid;
  align-items: center;
}
#return p {
  text-align: center;
  color: white;
  font-size: 15px;
  line-height: 1.3em;
  letter-spacing: 0.05em;
  margin-top: 3px;
}
#return p span {display: block;}