#loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  /* background: linear-gradient(to bottom right, #f9f6f2, #d7ccc8);; */
  background: linear-gradient(to bottom right, #9fa4a3,#65aca6, #4c7869);  /* グリーンブルーのグラデーション */
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

#loading.loaded {
  opacity: 0;
  visibility: hidden;
}

.loader {
  position: relative;
  width: 100px;
  height: 100px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.loader.active {
  opacity: 1;
  animation: spin 2.5s linear infinite; /* 遅く */
}

.loader span {
  position: absolute;
  width: 12px;
  height: 12px;
  background: #fff;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  margin: -6px;
  transform-origin: 30px 0px; /* 半径を小さく */
}

/* 各spanを円周上に配置 */
.loader span:nth-child(1) { transform: rotate(0deg) translate(30px) rotate(0deg); }
.loader span:nth-child(2) { transform: rotate(45deg) translate(30px) rotate(-45deg); }
.loader span:nth-child(3) { transform: rotate(90deg) translate(30px) rotate(-90deg); }
.loader span:nth-child(4) { transform: rotate(135deg) translate(30px) rotate(-135deg); }
.loader span:nth-child(5) { transform: rotate(180deg) translate(30px) rotate(-180deg); }
.loader span:nth-child(6) { transform: rotate(225deg) translate(30px) rotate(-225deg); }
.loader span:nth-child(7) { transform: rotate(270deg) translate(30px) rotate(-270deg); }
.loader span:nth-child(8) { transform: rotate(315deg) translate(30px) rotate(-315deg); }

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}