/* ===== 外层框架 ===== */
.slider-main {
  position: absolute;
  top: 8%;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 38%;
  display: flex;
}
.left-slider,
.right-slider {
  height: 100%;
  aspect-ratio: 1.18;
  overflow: hidden;
  position: relative;
}
.right-slider {
  margin-left: auto;
}

/* ===== 通用图片层 ===== */
.slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  animation: fade 12s infinite; /* 3×4s = 12s 循环 */
}

/* ===== 左滑块：3 张图 ===== */
.left-slider .slide:nth-child(1) {
  background-image: url("./relics/1.png");
  animation-delay: 0s;
}
.left-slider .slide:nth-child(2) {
  background-image: url("./relics/2.png");
  animation-delay: 4s;
}
.left-slider .slide:nth-child(3) {
  background-image: url("./relics/3.png");
  animation-delay: 8s;
}

/* ===== 右滑块：3 张图 ===== */
.right-slider .slide:nth-child(1) {
  background-image: url("./relics/4.png");
  animation-delay: 0s;
}
.right-slider .slide:nth-child(2) {
  background-image: url("./relics/5.png");
  animation-delay: 4s;
}
.right-slider .slide:nth-child(3) {
  background-image: url("./relics/6.png");
  animation-delay: 8s;
}

/* ===== 关键帧：4 s 淡入淡出 ===== */
@keyframes fade {
  0% {
    opacity: 0;
  }
  8.33% {
    opacity: 1;
  } /* 0.5 s 淡入 */
  33.33% {
    opacity: 1;
  } /* 保持 3 s */
  41.66% {
    opacity: 0;
  } /* 0.5 s 淡出 */
  100% {
    opacity: 0;
  }
}
/* 轮播-左右切换 */
/* .slider-main {
  position: absolute;
  top: 8%;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 38%;
  display: flex;
}
.left-slider,
.right-slider {
  height: 100%;
  aspect-ratio: 1.18;
  overflow: hidden;
  position: relative;
}
.right-slider {
  margin-left: auto;
}

.layer {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  will-change: transform;
}
.now {
  transform: translateX(0);
  z-index: 1;
}
.next {
  transform: translateX(100%);
  z-index: 2;
}
.prev {
  transform: translateX(-100%);
}
.slide-out {
  transform: translateX(-100%);
  transition: transform 0.8s;
}
.slide-in {
  transform: translateX(0);
  transition: transform 0.8s;
} */