/* 背景图 + 模糊 + 透明效果 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background-image: url("../images/wallhaven-o35exm.webp"); /* 替换为你的图片路径 */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: blur(8px) brightness(0.8); /* 模糊 + 调暗一点更清晰 */
  z-index: -2;
}

/* 主体半透明，让背景透出来 */
.md-main {
  background-color: rgba(255, 255, 255, 0.6); /* light mode 半透明白 */
  backdrop-filter: blur(2px);
}

[data-md-color-scheme="slate"] .md-main {
  background-color: rgba(0, 0, 0, 0.3); /* dark mode 半透明黑 */
  backdrop-filter: blur(2px);
}