@font-face { font-family: 'LXGW WenKai Screen a1'; src: url('fonts/LXGWWenKaiGBScreen-a1.woff2') format('woff2'); font-display: swap;}
@font-face { font-family: 'LXGW WenKai Screen a2'; src: url('fonts/LXGWWenKaiGBScreen-a2.woff2') format('woff2'); font-display: swap;}
@font-face { font-family: 'LXGW WenKai Screen a3'; src: url('fonts/LXGWWenKaiGBScreen-a3.woff2') format('woff2'); font-display: swap;}

:root {
  --transition-height: height 0.3s ease;
  --box-shadow:0 2px 6px 0 rgb(136 148 171 / 20%), 0 24px 20px -24px rgb(71 82 107 / 10%);
}

html,
body {
    scrollbar-width: thin;
    scrollbar-arrow-color: transparent;
    scrollbar-base-color: transparent;
    scrollbar-color: transparent transparent;
    background-color: #f4f1ec;
}

::selection {
  color: #fffcf0;
  background: #393022;
}

/* App 加载启动动画 */
#app-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: #f4f1ec;
  color: #f43900;
  font-family: sans-serif;
  transition:
    opacity 0.4s ease,
    transform 0.4s ease;
  transform: translateZ(0);
  will-change: opacity, transform;
}

#app-loader.fade-out {
  opacity: 0;
  transform: scale(0.98); /* 微缩平滑消失 */
}

.loader {
  width: 40px;
  height: 40px;
  position: relative;
  transform: translateZ(0);
  will-change: transform;
}

.loader::before {
  content: '';
  box-sizing: border-box;
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 4px solid transparent;
  border-top-color: #f43900;
  animation: spin 1s linear infinite;
  transform-origin: center;
  will-change: transform;
}

#app-loader.fade-out .loader::before {
  animation: spin 0.6s ease-out forwards;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}