/* =============================================================================
   NSR Audio 产品模块样式（redesign C · 产品体验与性能部分）
   -----------------------------------------------------------------------------
   加载：仅产品列表(productlist)/产品详情(product)/搜索(search)模板引用，
         置于 style.css、responsive.css 之后（模板内 head.html 之后输出，覆盖生效）。
   约定：复用 responsive.css 公共类 .nsr-grid--4 / .img-ratio*（断点 991/767/479）；
         品牌色：红 #DD1015 / #D7181F，黑 #202020，金 #C9A063 极少量点缀。
   ============================================================================= */

/* ---------- 1. 产品列表卡片栅格 ---------- */
/* 列表容器：PC 4 列，<=991 3 列，<=767 2 列（继承 .nsr-grid--4），<=479 1 列 */
.plist-grid { gap: 22px; }

/* 卡片外壳：白底细边，悬停上移+阴影（品牌红描边点缀） */
.pcard {
	display: flex;
	flex-direction: column;
	box-sizing: border-box;
	background: #FFF;
	border: 1px solid #E8E8E8;
	transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.pcard:hover {
	transform: translateY(-4px);
	border-color: #DD1015;
	box-shadow: 0 12px 28px rgba(32, 32, 32, .14);
}

/* 卡片图区：统一 4:3，contain 完整显示产品图（白底产品照不裁切） */
.pcard__media {
	display: block;
	overflow: hidden;
	background: #FFF;
	border-bottom: 1px solid #F0F0F0;
}
.pcard__media img { transition: transform .45s ease; }
.pcard:hover .pcard__media img { transform: scale(1.045); }

/* 卡片文字区 */
.pcard__body {
	flex: 1;
	padding: 14px 14px 6px;
}
.pcard__title {
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
	font-size: 16px;
	line-height: 1.45;
	font-weight: bold;
	color: #202020;
	text-decoration: none;
}
.pcard__title:hover { color: #DD1015; }
.pcard__desc {
	margin: 8px 0 0;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
	font-size: 13px;
	line-height: 1.6;
	color: #8A8A8A;
}
.pcard__desc:empty { display: none; }

/* 卡片底部：价格（红）+ 查看详情 */
.pcard__foot {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	padding: 8px 14px 14px;
}
.pcard__price {
	margin: 0;
	font-size: 15px;
	font-weight: bold;
	color: #DD1015;
}
.pcard__price:empty { display: none; }
.pcard__more {
	font-size: 13px;
	color: #999;
	text-decoration: none;
	white-space: nowrap;
	transition: color .2s ease;
}
.pcard:hover .pcard__more { color: #DD1015; }

/* 平板档：4 列略挤降为 3 列（限 768~991；767 以下交给 .nsr-grid--4 公共类 2/1 列） */
@media (min-width: 768px) and (max-width: 991px) {
	.plist-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 479px) {
	.plist-grid { gap: 14px; }
	.pcard__body { padding: 12px 12px 4px; }
	.pcard__foot { padding: 6px 12px 12px; }
	.pcard__title { font-size: 15px; }
}

/* ---------- 2. 详情页相关产品（复用 .pcard 紧凑变体） ---------- */
.xgcp h2 { margin-bottom: 16px; }
.xgcp .nsr-grid { gap: 18px; }
.xgcp dl { margin: 0; }
.xgcp dl dt { float: none; width: auto; height: auto; margin: 0; }
.pcard--mini .pcard__body { padding: 10px 12px 8px; }
.pcard--mini .pcard__title {
	font-size: 14px;
	font-weight: normal;
	white-space: nowrap;
	text-overflow: ellipsis;
	display: block;
}
/* 覆盖老规则：dt p 固定高/行高与图片固定高 */
.xgcp dl dt img { height: auto; border: 0; }
.xgcp dl dt p { width: auto; height: auto; line-height: 1.45; }

/* ---------- 3. 详情页正文图（lightbox 光标提示） ---------- */
.nsr-pgal__main,
.slideTxtBox .bd img { cursor: zoom-in; }
/* 图片外层带超链接时优先跳转，不显示放大光标 */
.slideTxtBox .bd a img { cursor: pointer; }

/* ---------- 4. Lightbox 图集查看器 ---------- */
.nsr-lb {
	position: fixed;
	inset: 0;
	z-index: 20000; /* 高于吸顶头部 z-index:9000 */
	display: flex;
	align-items: center;
	justify-content: center;
	background: rgba(15, 15, 15, .92);
	opacity: 0;
	visibility: hidden;
	transition: opacity .25s ease, visibility 0s linear .25s;
}
.nsr-lb.is-open {
	opacity: 1;
	visibility: visible;
	transition: opacity .25s ease;
}
.nsr-lb__stage {
	margin: 0;
	max-width: 92vw;
	max-height: 82vh;
	display: flex;
	align-items: center;
	justify-content: center;
}
.nsr-lb__img {
	max-width: 92vw;
	max-height: 82vh;
	width: auto;
	height: auto;
	object-fit: contain;
	background: #FFF;
	box-shadow: 0 0 0 1px rgba(201, 160, 99, .35); /* 金色细描边点缀 */
	transition: opacity .2s ease;
}
.nsr-lb__img.is-switching { opacity: 0; }
.nsr-lb__btn {
	position: absolute;
	width: 44px;
	height: 44px;
	margin: 0;
	padding: 0;
	border: 0;
	border-radius: 50%;
	background: rgba(255, 255, 255, .12);
	color: #FFF;
	font-size: 26px;
	line-height: 44px;
	text-align: center;
	cursor: pointer;
	transition: background .2s ease, color .2s ease;
}
.nsr-lb__btn:hover,
.nsr-lb__btn:focus-visible {
	background: #DD1015;
	color: #FFF;
	outline: none;
}
.nsr-lb__close { top: 18px; right: 18px; font-size: 30px; }
.nsr-lb__prev { left: 18px; top: 50%; margin-top: -22px; }
.nsr-lb__next { right: 18px; top: 50%; margin-top: -22px; }
.nsr-lb__count {
	position: absolute;
	left: 0;
	right: 0;
	bottom: 16px;
	margin: 0;
	text-align: center;
	color: #C9A063;
	font-size: 13px;
	letter-spacing: 1px;
	pointer-events: none;
}
/* 键盘焦点可达：按钮天然可聚焦；隐藏时整个容器 display:none 移出 Tab 序列 */
.nsr-lb[hidden] { display: none; }
@media (max-width: 767px) {
	.nsr-lb__prev { left: 6px; }
	.nsr-lb__next { right: 6px; }
	.nsr-lb__stage, .nsr-lb__img { max-width: 86vw; }
}

/* body 滚动锁（product.js 开启 lightbox 时加 .nsr-lb-open） */
body.nsr-lb-open { overflow: hidden; }

/* ---------- 5. 产品中心左侧分类：二级分类展开 ---------- */
/* 三角改为按钮（可键盘聚焦），末级分类保留占位但隐藏 */
ul.expmenu li p.header button.arrow {
	padding: 0;
	border: 0;
	background-color: transparent;
	cursor: pointer;
	outline-offset: -4px;
}
ul.expmenu > li[data-soncount="0"] > p.header button.arrow { visibility: hidden; cursor: default; }
ul.expmenu li p.header .label { text-decoration: none; }
ul.expmenu > li.cur > p.header .label,
ul.expmenu li p.header .label.cur { color: #DD1015; }
/* 二级分类行：沿用 style.css 的缩进/分隔线，链接铺满整行 */
ul.expmenu li ul.menu li { background-image: none; text-indent: 0; }
ul.expmenu li ul.menu li a {
	display: block;
	width: 235px;
	height: 46px;
	line-height: 46px;
	padding-left: 45px;
	box-sizing: border-box;
	color: #727272;
	text-decoration: none;
}
ul.expmenu li ul.menu li.cur a,
ul.expmenu li ul.menu li a:hover { color: #DD1015; }

/* ---------- 6. 详情页产品图集（轮播多图） ---------- */
.nsr-pgal {
	max-width: 1260px;
	margin: 0 auto 12px;
	text-align: center;
}
.nsr-pgal__stage {
	position: relative;
	display: inline-block;
	max-width: 100%;
	line-height: 0;
}
.nsr-pgal__main {
	display: block;
	max-width: 100%;
	max-height: 560px;
	width: auto;
	height: auto;
	margin: 0 auto;
	background: #FFF;
}
.nsr-pgal__nav {
	position: absolute;
	top: 50%;
	width: 42px;
	height: 42px;
	margin-top: -21px;
	padding: 0;
	border: 0;
	border-radius: 50%;
	background: rgba(32, 32, 32, .38);
	color: #FFF;
	font-size: 26px;
	line-height: 42px;
	text-align: center;
	cursor: pointer;
	transition: background .2s ease;
}
.nsr-pgal__nav:hover,
.nsr-pgal__nav:focus-visible { background: #DD1015; outline: none; }
.nsr-pgal__prev { left: 12px; }
.nsr-pgal__next { right: 12px; }
.nsr-pgal__thumbs {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 10px;
	margin-top: 16px;
}
.nsr-pgal__thumb {
	width: 86px;
	height: 66px;
	padding: 4px;
	border: 1px solid #E4E4E4;
	background: #FFF;
	cursor: pointer;
	transition: border-color .2s ease;
}
.nsr-pgal__thumb.is-active { border-color: #DD1015; }
.nsr-pgal__thumb:hover,
.nsr-pgal__thumb:focus-visible { border-color: #DD1015; outline: none; }
.nsr-pgal__thumb img { display: block; width: 100%; height: 100%; object-fit: contain; }
@media (max-width: 767px) {
	.nsr-pgal__main { max-height: 380px; }
	.nsr-pgal__nav { width: 36px; height: 36px; margin-top: -18px; line-height: 36px; font-size: 22px; }
	.nsr-pgal__prev { left: 4px; }
	.nsr-pgal__next { right: 4px; }
	.nsr-pgal__thumb { width: 64px; height: 50px; }
}