* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  padding: 0;
}
.show {
  position: relative;
  width: auto;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  margin-left: 300px;
  border-bottom: 1px solid #000;
}
.show > video {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  min-width: 100%;
  min-height: 100%;
}
.show > div {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  width: 80%;
  height: 80%;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 3px;
  border: 1px solid #333;
  padding: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: #fff;
}
.show > div > div > strong {
  font-size: 50px;
}
.show > div > div > span {
  position: absolute;
  bottom: 15%;
  left: 50%;
  right: 50%;
  display: flex;
  justify-content: center;
  color: #aaff00;
}
@keyframes scrollAnime {
  0% {
    translate: scaleY(0);
  }
  50% {
    transform: rotate(360deg);
    color: #0080ff;
  }
  100% {
    transform: scaleY(1.5);
  }
}
.show > div > div > span::before {
  content: "↓";
  position: absolute;
  bottom: -30px;
  color: #00FF00;
  display: block;
  animation: scrollAnime 1s infinite;
}
header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  background-color: rgba(255,255,255,0.8);
  z-index: 900;
  width: 300px;
  border-right: 0.5px solid #000;
  display: flex;
  justify-content: center;
  align-items: center;
}
header::before {
  content: "";
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  position: absolute;
  inset: 0;
  z-index: -1;
}
main {
  padding: 15px;
  margin-left: 300px;
  /* ↓お飾り余白　メインタグがあふれてしまった場合は100vhからautoに変更してください。 */
  min-height: 100vh;
  background-color: rgb(250,255,255);
}
main section {
  min-height: 80vh;
}
main a {
  color: #aaff00;
}
main a:hover {
  color: #00ff00;
}
main h2 {
  color: #00aaff;
  position: relative;
  padding-left: 10px;
}
main h2::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 1px;
  width: 100%;
  background: #00ffff;
}
footer {
  margin-left: 300px;
  background-color: #111;
  color: #fff;
  display: flex;
  text-align: center;
  justify-content: center;
  padding: 10px;
}
ul {
  display: block;
  justify-content: center;
  padding: 10px;
}
li {
  list-style: none;
  padding: 5px;
}
header a {
  text-decoration: none;
  color: #111;
  transition: all 0.5s;
  font-size: 20px;
}
header a:hover {
  color: rgb(0,255,0);
  border-bottom: 1px solid #00ff00;
}
.banner {
  font-size: 20px;
  margin: 10px 0 10px;
}

.work_order {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
}
.work_order > article {
  margin: 10px;
  width: 30vw;
  height: 300px;
  border-radius: 10px;
  overflow: hidden;
}
.work_order > article > a {
  display: block;
  width: 100%;
  height: 100%;
  background: #0077ff;
  transition: all 0.3s;
  color: #FFF;
  text-decoration: none;
}
.work_order > article > a:hover {
  background: #00aaff;
}
.work_order > article > a > div {
  padding: 15px;
  overflow-y: auto;
  height: 100%;
}
.work_order > article > a > div > h3 {
  color: #00ffff;
}

.zisseki {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  align-items: center;
}
.zisseki > article {
  width: 30vw;
  height: 400px;
  border-radius: 15px;
  overflow: hidden;
  transition: all 0.3s;
  margin: 10px;
}
.zisseki > article:hover {
  transform: translateY(-5px);
}
.zisseki > article > a {
  display: block;
  width: 100%;
  height: 100%;
  position: relative;
  text-decoration: none;
  background: #0077ff;
}
.zisseki > article > a > img {
  position: absolute;
  display: block;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 45%;
  object-fit: cover;
}
.zisseki > article > a > div {
  padding: 20px;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 55%;
  overflow-y: auto;
  color: #FFF;
}
.zisseki > article > a > div > h3 {
  color: #00ffff;
}

#menu-btn-check {
  display: none;
}
@media only screen and (max-width: 1000px){
  .show {
    margin-left: 0;
  }
  .show > div {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-40%);
    height: 60%;
  }
  .show > div > div > strong {
    font-size: 25px;
  }
  header {
    right: 0;
    width: auto;
    height: 75px;
    border-right: 0px solid;
    border-bottom: 1px solid #000;
  }
  header > div {
    display: flex;
    justify-content: space-between;
    padding: 3px;
    width: 90%;
  }
  main {
    padding: 15px;
    margin-left: 0px;
  }
  main section {
    padding-top: 80px;
  }
  footer {
    margin-left: 0px;
  }
  .menu-btn {
    position: fixed;
    top: 15px;
    right: 15px;
    display: flex;
    height: 45px;
    width: 45px;
    justify-content: center;
    align-items: center;
    z-index: 90;
    background-color: #111111;
    border-radius: 5px;
    overflow: hidden;
  }
  .menu-btn span,
  .menu-btn span:before,
  .menu-btn span:after {
    content: '';
    display: block;
    height: 3px;
    width: 20px;
    border-radius: 3px;
    background-color: #0080ff;
    position: absolute;
    transition: all 0.45s;
  }
  .menu-btn span:before {
    bottom: 8px;
  }
  .menu-btn span:after {
    top: 8px;
  }
  #menu-btn-check:checked ~ .menu-btn span {
    background-color: rgba(255, 255, 255, 0);
  }
  #menu-btn-check:checked ~ .menu-btn span::before {
    bottom: 0;
    transform: rotate(45deg);
  }
  #menu-btn-check:checked ~ .menu-btn span::after {
    top: 0;
    transform: rotate(-45deg);
  }
  #menu-btn-check:checked ~ .menu-content {
    left: 0;
  }
  .menu-content {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 100%;
    z-index: 80;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    background-color: rgba(0,0,0,0.5);
    transition: all 0.45s;
  }
  .menu-content ul {
    padding: 100px 10px 0;
    display: block;
  }
  .menu-content ul li {
    border-bottom: solid 1px #2b00ff;
    list-style: square;
    display: flex;
  }
  .menu-content ul li a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    font-size: 15px;
    box-sizing: border-box;
    color: #ffffff;
    text-decoration: none;
    padding: 9px 15px 10px 0;
    position: relative;
  }
  .menu-content ul li a::before {
    content: "";
    width: 7px;
    height: 7px;
    border-top: solid 2px #ffffff;
    border-right: solid 2px #ffffff;
    transform: rotate(45deg);
    position: absolute;
    right: 11px;
    top: 16px;
  }
}
@media only screen and (max-width: 600px) {
  .zisseki > article,
  .work_order > article {
    width: 100%;
  }
}