/* ============================================================
   内容站样式：文章卡片 / 精选区 / 两栏区 / 文章详情
   依赖 style.css 的设计令牌
   ============================================================ */

.sa-container--narrow {
	max-width: 760px;
	margin-left: auto;
	margin-right: auto;
	padding-left: 24px;
	padding-right: 24px;
}

/* ============================================================
   文章卡片网格
   ============================================================ */
.sa-posts {
	display: grid;
	gap: var(--sa-gap);
}

.sa-posts--cols2 { grid-template-columns: repeat(2, 1fr); }
.sa-posts--cols3 { grid-template-columns: repeat(3, 1fr); }
.sa-posts--cols4 { grid-template-columns: repeat(4, 1fr); }

.sa-post-card {
	background: var(--sa-surface);
	border: 1px solid var(--sa-border);
	border-radius: var(--sa-r);
	overflow: hidden;
	display: flex;
	flex-direction: column;
	transition: border-color var(--sa-t), box-shadow var(--sa-t), transform var(--sa-t);
}

.sa-post-card:hover {
	border-color: var(--sa-primary-soft-2);
	box-shadow: var(--sa-shadow-lg);
	transform: translateY(-3px);
}

.sa-post-card__thumb {
	position: relative;
	display: block;
	aspect-ratio: 16 / 9;
	overflow: hidden;
	background: var(--sa-bg-sunken);
}

.sa-post-card__thumb img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
	transition: transform .35s ease;
}

.sa-post-card:hover .sa-post-card__thumb img {
	transform: scale(1.04);
}

.sa-post-card__ph {
	display: block;
	width: 100%;
	height: 100%;
	background: linear-gradient(135deg, var(--sa-primary-soft-2), var(--sa-primary-soft));
}

.sa-post-card__tag {
	position: absolute;
	left: 12px;
	top: 12px;
	background: rgba(255, 255, 255, .94);
	color: var(--sa-primary-dark);
	font-size: 12px;
	font-weight: 600;
	padding: 5px 12px;
	border-radius: var(--sa-r-pill);
	box-shadow: 0 2px 8px rgba(15, 23, 42, .12);
}

.sa-post-card__tag--inline {
	position: static;
	display: inline-block;
	margin-bottom: 10px;
	box-shadow: none;
	background: var(--sa-primary-soft);
}

.sa-post-card__body {
	padding: 16px 18px 18px;
	flex: 1;
	display: flex;
	flex-direction: column;
}

.sa-post-card__title {
	margin: 0 0 8px;
	font-size: 16px;
	font-weight: 600;
	line-height: 1.5;
	color: var(--sa-text);
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.sa-post-card__title a {
	color: inherit;
	text-decoration: none;
}

.sa-post-card:hover .sa-post-card__title a {
	color: var(--sa-primary);
}

.sa-post-card__excerpt {
	margin: 0 0 12px;
	font-size: 13px;
	line-height: 1.7;
	color: var(--sa-text-3);
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.sa-post-card__meta {
	margin-top: auto;
	font-size: 12px;
	color: var(--sa-text-3);
	display: flex;
	align-items: center;
}

/* ============================================================
   首页精选区：头条 + 次条
   ============================================================ */
.sa-featured {
	display: grid;
	grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
	gap: var(--sa-gap);
	align-items: stretch;
}

.sa-featured__lead,
.sa-featured__side {
	min-width: 0;
}

.sa-featured__lead {
	background: var(--sa-surface);
	border: 1px solid var(--sa-border);
	border-radius: var(--sa-r);
	overflow: hidden;
	display: flex;
	flex-direction: column;
	transition: box-shadow var(--sa-t), border-color var(--sa-t);
}

.sa-featured__lead:hover {
	border-color: var(--sa-primary-soft-2);
	box-shadow: var(--sa-shadow-lg);
}

.sa-featured__lead-thumb {
	display: block;
	aspect-ratio: 16 / 9;
	overflow: hidden;
	background: var(--sa-bg-sunken);
}

.sa-featured__lead-thumb img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
	transition: transform .35s ease;
}

.sa-featured__lead:hover .sa-featured__lead-thumb img {
	transform: scale(1.03);
}

.sa-featured__lead-body {
	padding: 22px 24px 24px;
	flex: 1;
	display: flex;
	flex-direction: column;
}

.sa-featured__lead-title {
	margin: 0 0 10px;
	font-size: 22px;
	font-weight: 700;
	line-height: 1.45;
}

.sa-featured__lead-title a {
	color: var(--sa-text);
	text-decoration: none;
}

.sa-featured__lead:hover .sa-featured__lead-title a {
	color: var(--sa-primary);
}

.sa-featured__lead-excerpt {
	margin: 0 0 14px;
	font-size: 14px;
	line-height: 1.8;
	color: var(--sa-text-2);
}

.sa-featured__side {
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.sa-featured__item {
	display: flex;
	gap: 14px;
	align-items: center;
	background: var(--sa-surface);
	border: 1px solid var(--sa-border);
	border-radius: var(--sa-r);
	padding: 12px;
	flex: 1;
	transition: border-color var(--sa-t), box-shadow var(--sa-t), transform var(--sa-t);
}

.sa-featured__item:hover {
	border-color: var(--sa-primary-soft-2);
	box-shadow: var(--sa-shadow);
	transform: translateY(-2px);
}

.sa-featured__item-thumb {
	flex: 0 0 116px;
	width: 116px;
	aspect-ratio: 16 / 10;
	border-radius: var(--sa-r-sm);
	overflow: hidden;
	background: var(--sa-bg-sunken);
}

.sa-featured__item-thumb img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.sa-featured__item-body {
	min-width: 0;
}

.sa-featured__item-tag {
	display: inline-block;
	font-size: 11px;
	font-weight: 600;
	color: var(--sa-primary);
	background: var(--sa-primary-soft);
	padding: 3px 9px;
	border-radius: var(--sa-r-xs);
	margin-bottom: 6px;
}

.sa-featured__item-title {
	margin: 0 0 6px;
	font-size: 14px;
	font-weight: 600;
	line-height: 1.5;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.sa-featured__item-title a {
	color: var(--sa-text);
	text-decoration: none;
}

.sa-featured__item:hover .sa-featured__item-title a {
	color: var(--sa-primary);
}

/* ============================================================
   两栏区：话题 + 侧栏
   ============================================================ */
.sa-board {
	display: grid;
	/* minmax(0,1fr)：不给列设最小内容宽度，否则 nowrap 的长标题会把整页撑宽 */
	grid-template-columns: minmax(0, 1fr) 320px;
	gap: var(--sa-gap);
	align-items: start;
}

.sa-board__main,
.sa-board__aside {
	min-width: 0;
}

.sa-board__head {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 16px;
	margin-bottom: 14px;
}

.sa-board__title {
	margin: 0;
	font-size: 20px;
	font-weight: 700;
	color: var(--sa-text);
}

.sa-board__aside {
	display: flex;
	flex-direction: column;
	gap: 16px;
}

/* ---------- 侧栏小组件 ---------- */
.sa-widget {
	background: var(--sa-surface);
	border: 1px solid var(--sa-border);
	border-radius: var(--sa-r);
	padding: 18px;
}

.sa-widget__title {
	margin: 0 0 14px;
	font-size: 15px;
	font-weight: 600;
	color: var(--sa-text);
	padding-bottom: 10px;
	border-bottom: 1px solid var(--sa-bg-sunken);
}

.sa-widget--accent {
	background: linear-gradient(135deg, var(--sa-primary-soft), var(--sa-surface));
	border-color: var(--sa-primary-soft-2);
}

.sa-widget__text {
	margin: 0 0 14px;
	font-size: 13px;
	line-height: 1.7;
	color: var(--sa-text-2);
}

.sa-empty__mini {
	margin: 0;
	font-size: 13px;
	color: var(--sa-text-3);
}

/* ---------- 排行榜列表 ---------- */
.sa-rank {
	list-style: none;
	margin: 0;
	padding: 0;
	counter-reset: rank;
}

.sa-rank__item {
	display: flex;
	gap: 12px;
	align-items: flex-start;
	padding: 9px 0;
	border-bottom: 1px solid var(--sa-bg-sunken);
}

.sa-rank__item:last-child {
	border-bottom: 0;
	padding-bottom: 0;
}

.sa-rank__num {
	flex: 0 0 20px;
	width: 20px;
	height: 20px;
	border-radius: var(--sa-r-xs);
	background: var(--sa-bg-sunken);
	color: var(--sa-text-3);
	font-size: 12px;
	font-weight: 600;
	display: flex;
	align-items: center;
	justify-content: center;
	margin-top: 2px;
}

.sa-rank__num--top {
	background: var(--sa-primary);
	color: #fff;
}

.sa-rank__title {
	font-size: 14px;
	line-height: 1.6;
	color: var(--sa-text-2);
	text-decoration: none;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.sa-rank__title:hover {
	color: var(--sa-primary);
}

/* ---------- 标签 / 胶囊 ---------- */
.sa-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

.sa-tag {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	font-size: 13px;
	color: var(--sa-text-2);
	background: var(--sa-bg);
	border: 1px solid var(--sa-border);
	border-radius: var(--sa-r-pill);
	padding: 6px 14px;
	text-decoration: none;
	transition: all var(--sa-t);
}

.sa-tag span {
	font-size: 11px;
	color: var(--sa-text-3);
}

.sa-tag:hover {
	color: var(--sa-primary);
	border-color: var(--sa-primary-soft-2);
	background: var(--sa-primary-soft);
}

/* ---------- 分类筛选条 ---------- */
.sa-cats {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-bottom: 22px;
	padding-bottom: 18px;
	border-bottom: 1px solid var(--sa-border);
}

.sa-cats__item {
	font-size: 14px;
	color: var(--sa-text-2);
	text-decoration: none;
	padding: 8px 18px;
	border-radius: var(--sa-r-pill);
	background: var(--sa-surface);
	border: 1px solid var(--sa-border);
	transition: all var(--sa-t);
}

.sa-cats__item:hover {
	color: var(--sa-primary);
	border-color: var(--sa-primary-soft-2);
}

.sa-cats__item.is-active {
	background: var(--sa-primary);
	border-color: var(--sa-primary);
	color: #fff;
	font-weight: 500;
}

/* ============================================================
   文章详情页
   ============================================================ */
.sa-article {
	padding-bottom: 0;
}

.sa-article__head {
	background: var(--sa-surface);
	border-bottom: 1px solid var(--sa-border);
	padding: 40px 0 32px;
}

.sa-crumbs {
	font-size: 13px;
	color: var(--sa-text-3);
	margin-bottom: 16px;
}

.sa-crumbs a {
	color: var(--sa-text-2);
	text-decoration: none;
}

.sa-crumbs a:hover {
	color: var(--sa-primary);
}

.sa-crumbs span {
	margin: 0 8px;
	color: var(--sa-border-strong);
}

.sa-article__title {
	margin: 0 0 20px;
	font-size: 34px;
	font-weight: 700;
	line-height: 1.4;
	color: var(--sa-text);
	text-wrap: balance;
}

.sa-article__meta {
	display: flex;
	align-items: center;
	gap: 12px;
}

.sa-article__author-av {
	flex: 0 0 40px;
	width: 40px;
	height: 40px;
	border-radius: 50%;
	background: var(--sa-primary-soft-2);
	color: var(--sa-primary-dark);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 16px;
	font-weight: 600;
}

.sa-article__author {
	display: block;
	font-size: 14px;
	font-weight: 600;
	color: var(--sa-text);
}

.sa-article__sub {
	display: block;
	margin-top: 2px;
	font-size: 13px;
	color: var(--sa-text-3);
}

.sa-article__cover {
	padding: 28px 0 0;
}

.sa-article__cover img {
	width: 100%;
	border-radius: var(--sa-r);
	display: block;
}

/* ---------- 正文排版 ---------- */
.sa-article__body {
	padding: 30px 0 8px;
	font-size: 16.5px;
	line-height: 1.9;
	color: var(--sa-text-2);
}

.sa-article__body p {
	margin: 0 0 20px;
}

.sa-article__body h2 {
	margin: 38px 0 16px;
	font-size: 22px;
	font-weight: 700;
	line-height: 1.5;
	color: var(--sa-text);
	padding-left: 14px;
	border-left: 4px solid var(--sa-primary);
}

.sa-article__body h3 {
	margin: 30px 0 12px;
	font-size: 18px;
	font-weight: 600;
	color: var(--sa-text);
}

.sa-article__body strong {
	color: var(--sa-text);
	font-weight: 600;
}

.sa-article__body ul,
.sa-article__body ol {
	margin: 0 0 20px;
	padding-left: 24px;
}

.sa-article__body li {
	margin-bottom: 8px;
}

.sa-article__body ul li {
	list-style: disc;
}

.sa-article__body ol li {
	list-style: decimal;
}

.sa-article__body blockquote {
	margin: 24px 0;
	padding: 16px 20px;
	background: var(--sa-bg);
	border-left: 3px solid var(--sa-primary);
	border-radius: 0 var(--sa-r-sm) var(--sa-r-sm) 0;
	color: var(--sa-text-2);
}

.sa-article__body img {
	max-width: 100%;
	height: auto;
	border-radius: var(--sa-r-sm);
}

.sa-article__body a {
	color: var(--sa-primary);
	text-decoration: none;
	border-bottom: 1px solid var(--sa-primary-soft-2);
}

.sa-article__body a:hover {
	border-bottom-color: var(--sa-primary);
}

.sa-article__body code {
	background: var(--sa-bg);
	padding: 2px 7px;
	border-radius: var(--sa-r-xs);
	font-size: 14px;
}

/* ---------- 标签 ---------- */
.sa-article__tags {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px;
	padding: 24px 0;
	border-top: 1px solid var(--sa-border);
	margin-top: 12px;
}

.sa-article__tags-label {
	font-size: 13px;
	font-weight: 600;
	color: var(--sa-text-2);
	margin-right: 4px;
}

/* ---------- 作者卡 ---------- */
.sa-author-card {
	display: flex;
	align-items: center;
	gap: 16px;
	background: var(--sa-bg);
	border: 1px solid var(--sa-border);
	border-radius: var(--sa-r);
	padding: 20px;
	margin-bottom: 28px;
}

.sa-author-card__av {
	flex: 0 0 48px;
	width: 48px;
	height: 48px;
	border-radius: 50%;
	background: var(--sa-primary);
	color: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 20px;
	font-weight: 600;
}

.sa-author-card__body {
	flex: 1;
	min-width: 0;
}

.sa-author-card__body strong {
	display: block;
	font-size: 15px;
	color: var(--sa-text);
	margin-bottom: 3px;
}

.sa-author-card__body p {
	margin: 0;
	font-size: 13px;
	line-height: 1.6;
	color: var(--sa-text-3);
}

/* ---------- 上下篇 ---------- */
.sa-postnav {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 14px;
	padding-bottom: 40px;
}

.sa-postnav__item {
	background: var(--sa-surface);
	border: 1px solid var(--sa-border);
	border-radius: var(--sa-r);
	padding: 16px 18px;
	min-height: 72px;
}

.sa-postnav__item--next {
	text-align: right;
}

.sa-postnav__label {
	display: block;
	font-size: 12px;
	color: var(--sa-text-3);
	margin-bottom: 5px;
}

.sa-postnav__item a {
	font-size: 14px;
	line-height: 1.5;
	color: var(--sa-text);
	text-decoration: none;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.sa-postnav__item a:hover {
	color: var(--sa-primary);
}

/* ---------- 分页 ---------- */
.sa-pager {
	margin-top: 32px;
	display: flex;
	justify-content: center;
}

.sa-pager .nav-links {
	display: flex;
	gap: 6px;
	align-items: center;
}

.sa-pager .page-numbers {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 38px;
	height: 38px;
	padding: 0 12px;
	border: 1px solid var(--sa-border);
	border-radius: var(--sa-r-sm);
	background: var(--sa-surface);
	color: var(--sa-text-2);
	font-size: 14px;
	text-decoration: none;
	transition: all var(--sa-t);
}

.sa-pager .page-numbers.current,
.sa-pager .page-numbers:hover {
	background: var(--sa-primary);
	border-color: var(--sa-primary);
	color: #fff;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
	.sa-board {
		grid-template-columns: minmax(0, 1fr);
	}

	.sa-featured {
		grid-template-columns: minmax(0, 1fr);
	}

	.sa-posts--cols3,
	.sa-posts--cols4 {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 768px) {
	.sa-container--narrow {
		padding-left: 18px;
		padding-right: 18px;
	}

	.sa-posts--cols2,
	.sa-posts--cols3,
	.sa-posts--cols4 {
		grid-template-columns: 1fr;
	}

	.sa-article__head {
		padding: 24px 0 22px;
	}

	.sa-article__title {
		font-size: 24px;
	}

	.sa-article__body {
		font-size: 16px;
		line-height: 1.85;
	}

	.sa-article__body h2 {
		font-size: 19px;
		margin-top: 30px;
	}

	.sa-postnav {
		grid-template-columns: 1fr;
	}

	.sa-postnav__item--next {
		text-align: left;
	}

	.sa-featured__item-thumb {
		flex: 0 0 92px;
		width: 92px;
	}

	.sa-author-card {
		flex-wrap: wrap;
	}

	.sa-author-card .sa-btn {
		width: 100%;
	}
}