@charset "utf-8";
/* CSS Document */

/* ===== 视域分析 ===== */
.analysis-section {
	width: 100%;
	margin: 0 auto;
	padding: 60px 10px;
	background: url("../images/syfenxi-bg.jpg") 0 0 / 100% 100% no-repeat;
	position: relative;
	overflow: hidden;
	flex-shrink: 0;
	z-index:11;
}

/* ===== 标题区域 ===== */
.analysis-wrap {
	text-align: center;
	color: #fff;
	margin-bottom: 32px;
}
.analysis-en {
	font-family: 'MiSansLight', sans-serif;
	font-size: 18px;
	font-weight: 300;
	margin-bottom: 12px;
	letter-spacing: 2px;
}
.analysis-cn {
	font-size: 30px;
	font-weight: 400;
	letter-spacing: 8px;
	font-family: sans-serif;
}

/* ===== 媒体容器（图片 & 视频） ===== */
.analysis-video-box {
	width: 91%;
	margin: 0 auto;
	background: #ffffff;
	overflow: hidden;
	border-radius: 6px;
	position: relative;
}
.analysis-video-box img,
.analysis-video-box video {
	width: 100%;
	display: none;
	vertical-align: bottom;
	background: #111;
	object-fit: contain;
}
.analysis-video-box img.active,
.analysis-video-box video.active {
	display: block;
}

/* ===== Tab 导航 ===== */
.analysis-tab-nav {
	display: flex;
	justify-content: center;
	gap: 120px;
	margin-top: 30px;
	flex-wrap: nowrap;
}
.analysis-tab-item {
	width: 10%;
	text-align: center;
	color: #bbbbbb;
	font-size: 16px;
	letter-spacing: 4px;
	cursor: pointer;
	position: relative;
	padding: 6px 0 8px 0;
	transition: color 0.3s ease;
	border-bottom: 1px solid rgba(238, 238, 238, 0.7);
	flex-shrink: 0;
	user-select: none;
	-webkit-tap-highlight-color: transparent;
}
.analysis-tab-item.active {
	color: #ffffff;
}

/* ===== 进度条（替代原来的 ::after 白条） ===== */
.tab-progress {
	position: absolute;
	left: 0;
	bottom: -1px;
	width: 0%;
	height: 2px;
	background: #ff0000;
	border-radius: 1px;
	transition: none; /* 由 JS 控制宽度变化，不使用 CSS 过渡 */
	will-change: width;
}

/* ===== 触摸反馈 ===== */
.analysis-tab-item:active {
	opacity: 0.7;
	transform: scale(0.97);
}

/* ========横屏 & 平板 ( 769px ~ 1024px )======================== */
@media screen and (min-width: 769px) and (max-width: 1024px) {
	.analysis-tab-nav {
		gap: 60px;
	}
	.analysis-tab-item {
		width: 12%;
		font-size: 15px;
		letter-spacing: 3px;
	}
	.analysis-video-box {
		width: 85%;
	}
	.analysis-cn {
		font-size: 24px;
	}
}

/* ==========移动端自适应 ( ≤ 768px )================== */
@media screen and (max-width: 768px) {
	.analysis-section {
		padding: 28px 16px 36px;
	}

	.analysis-en {
		font-size: 12px;
		letter-spacing: 0.5px;
	}
	.analysis-cn {
		font-size: 20px;
		letter-spacing: 1px;
	}
	.analysis-wrap {
		margin-bottom: 20px;
	}

	.analysis-video-box {
		width: 100%;
		border-radius: 4px;
	}

	.analysis-tab-nav {
		gap: 6px;
		flex-wrap: wrap;
		margin-top: 18px;
		justify-content: center;
	}
	.analysis-tab-item {
		width: auto;
		font-size: 13px;
		letter-spacing: 1px;
		padding: 6px 12px 8px 12px;
		border-bottom: 1px solid rgba(238, 238, 238, 0.35);
		flex-shrink: 0;
		flex: 0 0 auto;
		min-height: 40px;
		display: flex;
		align-items: center;
		justify-content: center;
		position: relative;
	}
	/* 进度条在移动端保持一致 */
	.tab-progress {
		bottom: -1px;
		height: 2px;
	}

	.analysis-tab-nav {
		gap: 4px 12px;
	}
	.analysis-tab-item {
		margin-bottom: 2px;
	}
}

/* ========小屏手机 ( ≤ 480px )=================== */
@media screen and (max-width: 480px) {
	.analysis-section {
		padding: 20px 12px 28px;
	}

	.analysis-cn {
		font-size: 18px;
		letter-spacing: 0.5px;
	}
	.analysis-en {
		font-size: 11px;
	}

	.analysis-video-box {
		border-radius: 3px;
	}

	.analysis-tab-nav {
		gap: 2px 8px;
		margin-top: 14px;
	}
	.analysis-tab-item {
		font-size: 11px;
		letter-spacing: 0.5px;
		padding: 5px 8px 6px 8px;
		min-height: 34px;
		border-bottom-width: 1px;
	}
	.tab-progress {
		height: 2px;
		bottom: -1px;
	}
}