body {
	font-family: Arial, sans-serif;
	background: #f4f4f4;
	margin: 0;
	padding: 0;
	min-height: 100vh;
	overflow-x: hidden; /* 防止横向滚动条 */
	background-image: url('background.jpg');
	background-position: center top;
	background-size: cover;
	background-repeat: no-repeat;
}

/* 通用隐藏滚动条（仍可滚动） */
body {
  overflow-y: scroll;      /* 允许滚动 */
  scrollbar-width: none;   /* Firefox */
}

body::-webkit-scrollbar {
  display: none;           /* Chrome / Safari / Edge */
}

img {
	display: block;
	max-width: 100%;
	height: auto;
}

.header-banner {
	width: auto;
	max-height: 120px;
	margin: 0 auto; /* 关键：让块级元素水平居中 */
	display: block; /* 保证 img 元素是 block 元素 */
	margin-top: 10px; /* 👈 顶部留白 */
	border: 2px solid #B0BEC5; /* 默认边框 */
	border-radius: 6px;
	box-shadow: 0 6px 16px rgba(0,0,0,0.12);
	overflow: hidden;
	transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.header-banner:hover {
	transform: scale(1.05);
	border-color: #00bcd4; /* 发亮的边框颜色，例如蓝绿色 */
	box-shadow: 0 12px 24px rgba(0, 188, 212, 0.4); /* ✅ 悬停放大阴影 */
	z-index: 1;
}

a {
  display: inline-block; /* 👈 避免变成 block 把父级撑开 */
}

.panduan-banner img {
	width: auto;
	max-height: 120px ;
	display: block;
	margin: 0 auto; /* 关键：让块级元素水平居中 */
	display: block; /* 保证 img 元素是 block 元素 */
	margin-top: 0px; /* 👈 顶部留白 */
	/*border: 2px solid #B0BEC5; /* 默认边框 */
	border-radius: 6px;
	box-shadow: 0 6px 16px rgba(0,0,0,0.12);
	overflow: hidden;
	transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.panduan-banner img:hover {
	transform: scale(1.05);
	border-color: #00bcd4; /* 发亮的边框颜色，例如蓝绿色 */
	box-shadow: 0 12px 24px rgba(0, 188, 212, 0.4); /* ✅ 悬停放大阴影 */
	z-index: 1;
}

.footer-banner {
	width: auto;
	max-height: 120px;
	margin: 0 auto; /* 关键：让块级元素水平居中 */
	display: block; /* 保证 img 元素是 block 元素 */
	margin-top: 10px; /* 👈 顶部留白 */
}

@media (max-width: 767px) {
	.header-banner {
		width: 90%;
		margin: 0 auto;
		margin-top: 10px; /* 👈 顶部留白 */
	}
	.footer-banner {
		width: 90%;
		margin: 0 auto;
	}
}

.container {
	width: 100%;
	max-width: 1080px;
	margin: 0 auto;
}

.main-content {
	display: block;
}

.cards-container {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 1rem;
	padding: 1rem;
}

.card {
	background: #fff;
	border: 2px solid #B0BEC5; /* 默认边框 */
	border-radius: 6px;
	box-shadow: 0 6px 16px rgba(0,0,0,0.12);
	overflow: hidden;
	transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.card:hover {
	transform: scale(1.05);
	border-color: #00bcd4; /* 发亮的边框颜色，例如蓝绿色 */
	box-shadow: 0 12px 24px rgba(0, 188, 212, 0.4); /* ✅ 悬停放大阴影 */
	z-index: 1;
}

.card img {
	width: 100%;
	display: block;
}

.live-container {
	padding: 1rem;
}

.live-container iframe {
	width: 100%;
	/*aspect-ratio: 16 / 9;*/
	border: none;
}

.live-container iframe {
  pointer-events: none; /* ✅ 禁用所有交互 */
}

@media (max-width: 991px) {
	.live-container {
		display: none;
	}
}

@media (min-width: 992px) {
	.main-content {
		display: flex;
		flex-direction: row;
		/*align-items: flex-start;*/
		align-items: stretch; /* 👈 关键！子元素拉满高度 */
	}

	.cards-container {
		flex: 3;
		grid-template-columns: repeat(4, 1fr);
	}

	.live-container {
		flex: 1;
		max-width: 400px;
		aspect-ratio: unset; /* 取消宽高比限制 */
	}
}

@media (max-width: 767px) {
	.panduan-banner img {
		width: 90%;
		margin: 0 auto;
	}
}

footer {
  margin-top: 2rem;
}