*{
	margin: 0px;
	padding: 0px;
}

/* Start */
:root{
	--slider-h: 500px;          /* 轮播高度 */
	--slider-radius: 12px;
	--accent: #6366f1;
	--text-light: #fff;
	--text-dark: #111;
	--transition: .5s ease-in-out;
  }
  
  /* 容器 */
  .slider{
	position: relative;
	width: 100%;
	max-width: 1200px;
	height: var(--slider-h);
	margin: 5px auto;
	overflow: hidden;
	border-radius: var(--slider-radius);
  }
  
  /* 轨道 */
  .slider__track{
	list-style: none;
	margin: 0;
	padding: 0;
	position: relative;
	width: 100%;
	height: 100%;
  }
  
  /* 单张幻灯片 */
  .slider__item{
	position: absolute;
	inset: 0;
	opacity: 0;
	transition: opacity var(--transition);
  }
  .slider__item.active{ opacity: 1; }
  
  /* 图片撑满 */
  .slider__item img{
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
  }
  
  /* 文字层（水平+垂直居中） */
  .slider__caption{
	position: absolute;
	inset: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	color: var(--text-light);
	text-align: center;
	padding: 2rem;
	background: rgba(0,0,0,.35); /* 半透明底，可读性更好 */
	border-radius: var(--slider-radius);
  }
  .slider__caption h2{ font-size: 2.5rem; margin: 0 0 .5rem; }
  .slider__caption p{ font-size: 1.4rem; margin: 0; }
  
  /* 左右按钮 */
  .slider__btn{
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
	z-index: 2;
	background: rgba(255,255,255,.85);
	border: none;
	width: 48px;
	height: 48px;
	border-radius: 50%;
	font-size: 28px;
	line-height: 1;
	cursor: pointer;
	transition: background .25s;
  }
  .slider__btn:hover{ background: #fff; }
  .slider__btn--prev{ left: 20px; }
  .slider__btn--next{ right: 20px; }
  
  /* 小圆点 */
  .slider__dots{
	position: absolute;
	bottom: 20px;
	left: 50%;
	transform: translateX(-50%);
	display: flex;
	gap: 8px;
  }
  .slider__dot{
	width: 10px;
	height: 10px;
	border-radius: 50%;
	background: rgba(255,255,255,.5);
	cursor: pointer;
	transition: background .25s;
  }
  .slider__dot.active{ background: var(--accent); }
  
  /* 暗色模式自动反色文字底 */
  @media (prefers-color-scheme: dark){
	.slider__caption{background: rgba(0,0,0,.4);}
  }
  /* End */
  h1{
	font-size: 24px !important;
	color: black;
	text-align: center;
	padding-bottom: 10px;
  }