.carousel {
  width: 60%;
  height: 100%;

  border-radius: 0.4rem;
  overflow: hidden;
  position: relative;

  /* 居中 */
  margin-left: auto;
  margin-right: auto;

  border: 0.075rem solid #7b7b7b7a;
  box-shadow: var(--md-shadow-z1);
}

.carousel-container {
  width: 100%;
  height: 100%;

  position: relative;
  left: 0;

  display: flex;

  /* 过渡动画 1s */
  transition: all 1s;
}

.carousel-hover {
  height: 100%;
  width: 10%;
  position: absolute;
  top: 0;

  /* 子元素垂直居中 */
  display: flex;
  flex-flow: column nowrap;
  align-items: center;
  justify-content: center;
}
.carousel-hover.left {
  left: 0;
}
.carousel-hover.right {
  right: 0;
}

.carousel-hover button {
  background-color: var(--md-accent-fg-color);
  border-radius: 50%;

  cursor: pointer;

  opacity: 0;
  transition: opacity 0.3s;
}
.carousel-hover button::after {
  display: block;
  height: 1.5rem;
  width: 1.5rem;

  background-color: white;
  content: "";
  mask-position: center;
  -webkit-mask-position: center;
}
.carousel-hover.left button::after {
  mask-image: var(--md-tabbed-icon--prev);
  -webkit-mask-image: var(--md-tabbed-icon--prev);
}
.carousel-hover.right button::after {
  mask-image: var(--md-tabbed-icon--next);
  -webkit-mask-image: var(--md-tabbed-icon--next);
}

/* hover 外层 */
.carousel-hover:hover button {
  opacity: 0.5;
  transition: opacity 0.3s;
}
/* hover 内层 */
.carousel-hover button:hover {
  opacity: 0.8;
  transition: opacity 0.3s;
}

.carousel-container a {
  width: 100%;
  height: 100%;

  flex-shrink: 0;
}

.carousel-container img {
  width: 100%;
  height: 100%;

  object-fit: cover;
  display: block;
}

.carousel-bottom {
  position: absolute;
  /* 宽度等同于内容宽度 */
  width: 100%;
  padding: 20px;

  bottom: 0;

  display: flex;
  justify-content: center;
  /* 指示器间距 */
  gap: 10px;

  opacity: 0;
  transition: opacity 0.3s;
}
.carousel-bottom:hover {
  opacity: 0.8;
  transition: opacity 0.3s;
}

.carousel-bottom .indicator {
  height: 5px;
  width: 20px;

  background-color: var(--md-accent-fg-color);

  opacity: 0.5;
  cursor: pointer;
}

.carousel:hover .bottom .indicator {
  opacity: 1;
}
.carousel:hover .shift .btn {
  opacity: 1;
}

@media screen and (max-width: 600px) {
  .carousel {
      width: 100%;
  }

  .carousel-hover button {
      opacity: 1;
  }
}