#menu-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: #fff;
  font-size: 28px;
  z-index: 1001;
  cursor: pointer;
}

#menu {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 1000;
}

#menu.open {
  opacity: 1;
  pointer-events: auto;
}

#menu nav {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 32px;
}

#menu nav a {
  font-size: 28px;
}

.global-sns {
  position: fixed;
  top: 20px;
  left: 20px;
  display: flex;
  gap: 10px;
  z-index: 1002;
}

.global-sns a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  overflow: hidden;
  background: rgba(0,0,0,0.6);
}

.global-sns img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.menu-lang-switch {
  display: flex;
  gap: 6px;
  margin-bottom: 32px;
  font-size: 12px;
  user-select: none;
}

.menu-lang-switch span {
  display: inline-block;
  padding: 4px 12px;
  color: #ffffff;
  border: 1px solid #ffffff;
  border-radius: 4px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.menu-lang-switch span.active {
  background: #9e6767;
  border-color: #9e6767;
  cursor: default;
}

.menu-lang-switch span:not(.active):hover {
  background: rgba(255,255,255,0.12);
}