#menu-button {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 2000;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  width: 50px;
  height: 50px;
}

#menu-button img {
  position: absolute;
  width: 100%;
  height: auto;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

#menu-button img.show {
  opacity: 1;
  pointer-events: auto;
}

.menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 1090;
}

.menu-panel {
  position: fixed;
  top: 0;
  left: 100%;
  width: 60%;
  height: 100%;
  background: #1b314a;
  z-index: 1100;
  transition: left 0.4s ease;
  padding: 4rem 2rem;
}

.menu-panel ul.menu-items {
  list-style: none;
  padding: 0;
  margin: 0;
}

.menu-panel ul.menu-items li {
  margin-bottom: 1.2rem;
}

.menu-panel ul.menu-items li a {
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  font-family: "Shippori Mincho", serif;
  font-weight: 500;
}

.menu-container {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 1100;
  transition: transform 0.4s ease;
}

.menu-open .menu-container {
  transform: translateX(-60vw);
}

.menu-open .menu-panel {
  left: 40%;
}

.menu-open .menu-overlay {
  display: block;
}

.sns {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  flex-wrap: wrap;
  padding: 1rem 0 0;
}

.sns p {
  width: 100%;
  color: #fff;
  font-size: 70%;
  margin: 0 0 1em;
}

.sns-item {
  width: 1.8rem;
  margin: 0 1rem 0 0;
}

.sns-item img {
  transition: transform 0.3s ease;
}

.sns-item img:hover {
  transform: scale(1.2);
}

@media screen and (min-width: 744px) and (max-width: 1024px) and (orientation:portrait) {
  .menu-panel {
    width: 70%;
    padding: 4rem 2rem;
  }
  
  .menu-panel ul.menu-items li {
    margin-bottom: 1rem;
  }
  
  .menu-panel ul.menu-items li a {
    font-size: 14px;
  }
  
  .menu-open .menu-container {
    transform: translateX(-30vw);
  }
  
  .menu-open .menu-panel {
    left: 70%;
  }
}

@media screen and (min-width: 1025px) {
  #menu-button {
    width: 50px;
    height: 50px;
  }
  
  .menu-panel {
    width: 80%;
    padding: 4rem 2rem;
  }
  
  .menu-panel ul.menu-items li {
    margin-bottom: 1rem;
  }
  
  .menu-panel ul.menu-items li a {
    font-size: 14px;
  }
  
  .menu-open .menu-container {
    transform: translateX(-20vw);
  }
  
  .menu-open .menu-panel {
    left: 80%;
  }
}