/* ===========================================================
   江苏大松机械有限公司 · 视频中心页样式
   =========================================================== */

/* ===== 主推视频 ===== */
.vd-feature {
	padding-bottom: 10px;
}
.vd-feature__box {
	display: grid;
	grid-template-columns: 1.35fr 1fr;
	background: var(--bg-dark);
	color: var(--text-light);
	position: relative;
}
.vd-feature__media {
	position: relative;
	min-height: 400px;
	background-size: cover;
	background-position: center;
	overflow: hidden;
}
.vd-feature__shade {
	position: absolute;
	inset: 0;
	background: linear-gradient(180deg, rgba(10,10,14,.1), rgba(10,10,14,.55));
	transition: background .6s var(--ease);
}
.vd-feature__play {
	position: absolute;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%);
	width: 92px;
	height: 92px;
	color: #fff;
	transition: transform .5s var(--ease);
	z-index: 2;
}
.vd-feature__pulse {
	position: absolute;
	left: 50%;
	top: 50%;
	width: 92px;
	height: 92px;
	transform: translate(-50%, -50%);
	border: 1px solid rgba(255,255,255,.4);
	border-radius: 50%;
	animation: vdPulse 2.6s var(--ease) infinite;
	pointer-events: none;
}
@keyframes vdPulse {
 0% {
transform: translate(-50%, -50%) scale(1);
opacity: .8;
}
 100% {
transform: translate(-50%, -50%) scale(1.55);
opacity: 0;
}
}
.vd-feature__play:hover {
	transform: translate(-50%, -50%) scale(1.08);
}
.vd-feature__tag {
	position: absolute;
	left: 0;
	top: 28px;
	background: var(--accent);
	color: #fff;
	font-size: 12px;
	letter-spacing: .18em;
	padding: 9px 18px 9px 22px;
	z-index: 2;
}
.vd-feature__info {
	padding: 60px 56px;
	display: flex;
	flex-direction: column;
	justify-content: center;
	position: relative;
}
.vd-feature__info::before {
	content: '';
	position: absolute;
	left: 0;
	top: 60px;
	bottom: 60px;
	width: 1px;
	background: linear-gradient(180deg, transparent, var(--line-dark) 30%, var(--line-dark) 70%, transparent);
}
.vd-feature__label {
	font-size: 12.5px;
	letter-spacing: .22em;
	color: var(--accent-2);
	margin-bottom: 16px;
}
.vd-feature__title {
	font-size: 28px;
	font-weight: 600;
	letter-spacing: .03em;
	line-height: 1.45;
	margin-bottom: 18px;
}
.vd-feature__desc {
	font-size: 14px;
	color: var(--text-light-mut);
	line-height: 2;
}
.vd-feature__meta {
	list-style: none;
	display: flex;
	gap: 34px;
	margin-top: 30px;
	padding-top: 24px;
	border-top: 1px solid var(--line-dark);
}
.vd-feature__meta li {
	display: flex;
	flex-direction: column;
	gap: 4px;
}
.vd-feature__meta span {
	font-size: 12px;
	color: var(--text-light-mut);
	letter-spacing: .1em;
}
.vd-feature__meta b {
	font-family: var(--serif);
	font-size: 15px;
	font-weight: 500;
	color: #fff;
}
/* ===== 视频列表 ===== */
.vd-list {
	padding: 90px 0 20px;
}
.vd-tabs {
	display: flex;
	justify-content: center;
	flex-wrap: wrap;
	gap: 12px;
	margin-bottom: 46px;
}
.vd-tab {
	padding: 12px 30px;
	border: 1px solid var(--line);
	background: #fff;
	font-size: 14px;
	letter-spacing: .05em;
	color: var(--text-mut);
	transition: all .5s var(--ease);
}
.vd-tab:hover {
	color: var(--accent);
	border-color: var(--accent);
}
.vd-tab.active {
	background: var(--accent);
	border-color: var(--accent);
	color: #fff;
}
.vd-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 28px;
}
.vd-card {
	background: #fff;
	border: 1px solid var(--line);
	transition: all .5s var(--ease);
	display: block;
}
.vd-card:hover {
	transform: translateY(-6px);
	box-shadow: 0 24px 48px rgba(0,0,0,.1);
	border-color: transparent;
}
.vd-card__media {
	position: relative;
	height: 210px;
	background-size: cover;
	background-position: center;
	overflow: hidden;
}
.vd-card__media::after {
	content: '';
	position: absolute;
	inset: 0;
	background: rgba(10,10,14,.28);
	transition: background .5s var(--ease);
}
.vd-card:hover .vd-card__media::after {
	background: rgba(10,10,14,.14);
}
.vd-card__play {
	position: absolute;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%) scale(.85);
	width: 56px;
	height: 56px;
	color: #fff;
	background: rgba(184,0,0,.85);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 16px;
	opacity: 0;
	transition: all .5s var(--ease);
	z-index: 2;
}
.vd-card:hover .vd-card__play {
	opacity: 1;
	transform: translate(-50%, -50%) scale(1);
}
.vd-card__time {
	position: absolute;
	right: 14px;
	bottom: 12px;
	z-index: 2;
	font-family: var(--serif);
	font-size: 12px;
	color: #fff;
	background: rgba(10,10,14,.66);
	padding: 3px 10px;
	letter-spacing: .06em;
}
.vd-card__body {
	padding: 22px 24px 24px;
}
.vd-card__cat {
	display: inline-block;
	font-size: 11.5px;
	color: var(--accent);
	border: 1px solid rgba(184,0,0,.35);
	padding: 2px 10px;
	letter-spacing: .08em;
	margin-bottom: 12px;
}
.vd-card__title {
	font-size: 16.5px;
	font-weight: 600;
	letter-spacing: .02em;
	line-height: 1.5;
	margin-bottom: 8px;
	transition: color .4s var(--ease);
}
.vd-card:hover .vd-card__title {
	color: var(--accent);
}
.vd-card__desc {
	font-size: 13px;
	color: var(--text-mut-2);
	line-height: 1.7;
}
.vd-empty {
	text-align: center;
	color: var(--text-mut-2);
	padding: 70px 0;
	font-size: 14.5px;
	letter-spacing: .05em;
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
.vd-feature__box {
	grid-template-columns: 1fr;
}
.vd-feature__media {
	min-height: 300px;
}
.vd-feature__info {
	padding: 40px 32px;
}
.vd-feature__info::before {
	display: none;
}
.vd-feature__title {
	font-size: 22px;
}
.vd-grid {
	grid-template-columns: repeat(2, 1fr);
	gap: 20px;
}
}
@media (max-width: 600px) {
.vd-grid {
	grid-template-columns: 1fr;
}
.vd-feature__meta {
	gap: 20px;
	flex-wrap: wrap;
}
.vd-feature__play {
	width: 68px;
	height: 68px;
}
.vd-feature__pulse {
	width: 68px;
	height: 68px;
}
}