.bg-layout-1 {
	background: #0011ff !important;
}
.bg-layout-2 {
	background: #ac5300 !important;
}
.bg-layout-3 {
	background: #ff9100 !important;
}
.bg-layout-4 {
	background: #a4a3b1 !important;
}
.bg-page-1 {
	background: #0073e6 !important;
}
.bg-page-2 {
	background: #000000 !important;
}
.bg-page-3 {
	background: #ff6600 !important;
}
.bg-page-4 {
	background: #252525 !important;
}
.bg-video-1 {
	background: linear-gradient(120deg, #e8eaf6 60%, #cfd8dc 100%);
}
.bg-video-2 {
	background: linear-gradient(120deg, #ffe0e3 60%, #ffd6a7 100%);
}
.bg-video-3 {
	background: linear-gradient(120deg, #e0ffe3 60%, #a7ffd6 100%);
}
.bg-video-4 {
	background: linear-gradient(120deg, #e0f0ff 60%, #a7c7ff 100%);
}

body {
	background: #f7fafd;
	min-height: 100vh;
	margin: 0;
	padding: 0;
	overflow: hidden;
}
.video-app-layout {
	background: #fff;
	border-radius: 1.5rem;
	max-width: 1280px;
	min-height: 720px;
	box-shadow: 0 8px 32px rgba(0,0,0,0.10);
}
.sidebar {
	background: #768192;
	border-radius: 1.5rem 0 0 1.5rem;
	min-width: 70px;
	width: 70px;
	display: flex;
	align-items: flex-start;
	justify-content: flex-start;
	box-shadow: 2px 0 8px rgba(120,130,180,0.04);
}
.sidebar-title {
	font-size: 0.85rem;
	color: #8ca0b3;
	letter-spacing: 0.1em;
	font-weight: 700;
	margin-bottom: 1.5rem;
}
.sidebar-thumb {
	width: 38px;
	height: 38px;
	background: #e3eaf6;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	color: #b0b8be;
	font-size: 1.1rem;
	cursor: pointer;
	border: 2px solid transparent;
	font-weight: 600;
	transition: box-shadow 0.2s, border 0.2s, color 0.2s, background 0.2s;
	margin-bottom: 0.5rem;
}
.sidebar-thumb.selected, .sidebar-thumb:hover {
	border: 2px solid #4f8cff;
	box-shadow: 0 2px 8px rgba(79,140,255,0.10);
	color: #4f8cff;
	background: #f0f6ff;
}
.main-video-area {
	min-width: 560px;
	min-height: 260px;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}
.main-video-box {
	width: 780px;
	height: 400px;
	border-radius: 1rem;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	color: #6b7a8f;
	font-size: 1.18rem;
	font-weight: 500;
	position: relative;
	box-shadow: 0 2px 8px rgba(120,130,180,0.07);
}
.main-video-label {
	font-size: 1.18rem;
	font-weight: 600;
	color: #6b7a8f;
	margin-bottom: 0.2rem;
}
.main-video-box span {
	position: absolute;
	bottom: 10px;
	right: 16px;
	font-size: 0.95rem;
	color: #b0b8be;
}
.main-video-caption {
	margin-top: 0.5rem;
	color: #a0a8b8;
}
@media (max-width: 600px) {
	.video-app-layout {
		flex-direction: column !important;
		min-width: 90vw;
		max-width: 98vw;
		min-height: 320px;
	}
	.sidebar {
		flex-direction: row !important;
		min-width: 100%;
		width: 100%;
		border-radius: 1.5rem 1.5rem 0 0;
		box-shadow: none;
		padding-bottom: 0.5rem;
		padding-top: 0.5rem;
		justify-content: center;
	}
	.sidebar-title {
		margin-bottom: 0;
		margin-right: 1.5rem;
	}
	.sidebar-thumb {
		margin-bottom: 0;
		margin-right: 0.7rem;
	}
	.main-video-area {
		min-width: 100%;
		padding: 0.5rem 0;
	}
	.main-video-box {
		width: 95vw;
		max-width: 98vw;
		height: 54vw;
		min-height: 120px;
	}
}