/* ============================================================
   news_cardwave — 彩色卡片瀑布流风 (Colorful Card Masonry)
   Pure CSS, system fonts, no JS, no frameworks.
   ============================================================ */

:root {
	--bg: #f0f2f5;
	--card-bg: #ffffff;
	--text-main: #2b2d3a;
	--text-sub: #6b7280;
	--text-faint: #9ca3af;
	--radius-lg: 18px;
	--radius-md: 12px;
	--radius-sm: 8px;
	--shadow-card: 0 4px 14px rgba(31, 41, 55, 0.08);
	--shadow-card-hover: 0 14px 28px rgba(31, 41, 55, 0.16);
	--shadow-soft: 0 2px 8px rgba(31, 41, 55, 0.06);

	/* rotating accent palette: blue / purple / pink / orange / teal */
	--accent-1: #4361ee;
	--accent-1-soft: #eef1ff;
	--accent-2: #7209b7;
	--accent-2-soft: #f5e9fb;
	--accent-3: #f72585;
	--accent-3-soft: #fdeaf3;
	--accent-4: #fb8500;
	--accent-4-soft: #fff2e0;
	--accent-5: #0d9488;
	--accent-5-soft: #e3f5f3;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
	margin: 0;
	background: var(--bg);
	color: var(--text-main);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, p { margin: 0; }

.page-wrap {
	max-width: 1200px;
	margin: 0 auto;
	padding: 28px 20px 60px;
	display: flex;
	align-items: flex-start;
	gap: 28px;
}

/* ---------------- Header / Nav ---------------- */
.site-header {
	background: var(--card-bg);
	box-shadow: var(--shadow-soft);
	position: sticky;
	top: 0;
	z-index: 100;
}
.header-inner {
	max-width: 1200px;
	margin: 0 auto;
	padding: 14px 20px;
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 18px;
}
.site-logo { display: inline-flex; align-items: center; flex-shrink: 0; }
.site-logo img { border-radius: var(--radius-sm); }
.site-nav {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-left: auto;
}
.site-nav a {
	padding: 8px 16px;
	border-radius: 999px;
	font-size: 14.5px;
	font-weight: 600;
	color: var(--text-sub);
	background: transparent;
	transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.site-nav a.nav-home {
	color: #fff;
	background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
}
.site-nav a:hover {
	background: var(--accent-1-soft);
	color: var(--accent-1);
	transform: translateY(-1px);
}
.site-nav a.nav-home:hover { color: #fff; opacity: 0.92; }

/* ---------------- Homepage: category blocks ---------------- */
.home-main {
	max-width: 1200px;
	margin: 0 auto;
	padding: 32px 20px 60px;
}
.cate-block {
	margin-bottom: 44px;
	--accent: var(--accent-1);
	--accent-soft: var(--accent-1-soft);
}
.cate-block:nth-child(5n+1) { --accent: var(--accent-1); --accent-soft: var(--accent-1-soft); }
.cate-block:nth-child(5n+2) { --accent: var(--accent-2); --accent-soft: var(--accent-2-soft); }
.cate-block:nth-child(5n+3) { --accent: var(--accent-3); --accent-soft: var(--accent-3-soft); }
.cate-block:nth-child(5n+4) { --accent: var(--accent-4); --accent-soft: var(--accent-4-soft); }
.cate-block:nth-child(5n+5) { --accent: var(--accent-5); --accent-soft: var(--accent-5-soft); }

.cate-block-head {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	margin-bottom: 18px;
	padding-bottom: 10px;
	border-bottom: 3px solid var(--accent-soft);
}
.cate-block-title {
	font-size: 22px;
	position: relative;
	padding-left: 14px;
}
.cate-block-title::before {
	content: "";
	position: absolute;
	left: 0;
	top: 3px;
	bottom: 3px;
	width: 6px;
	border-radius: 4px;
	background: var(--accent);
}
.cate-block-title a { color: var(--text-main); }
.cate-block-title a:hover { color: var(--accent); }
.cate-more {
	font-size: 13.5px;
	font-weight: 600;
	color: var(--accent);
	white-space: nowrap;
	padding: 4px 10px;
	border-radius: 999px;
	background: var(--accent-soft);
}
.cate-more:hover { opacity: 0.8; }

/* ---------------- Card masonry (CSS multi-column) ---------------- */
.card-masonry {
	column-count: 3;
	column-gap: 20px;
}
.card {
	display: inline-block;
	width: 100%;
	break-inside: avoid;
	-webkit-column-break-inside: avoid;
	margin: 0 0 20px;
	background: var(--card-bg);
	border-radius: var(--radius-lg);
	box-shadow: var(--shadow-card);
	border-top: 5px solid var(--accent, var(--accent-1));
	overflow: hidden;
	transition: transform 0.22s ease, box-shadow 0.22s ease;
}
.card:hover {
	transform: translateY(-5px);
	box-shadow: var(--shadow-card-hover);
}
.card-link { display: block; padding: 18px 20px 16px; }
.card-title {
	font-size: 16.5px;
	font-weight: 700;
	color: var(--text-main);
	line-height: 1.45;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}
.card:hover .card-title { color: var(--accent, var(--accent-1)); }
.card-summary {
	margin-top: 10px;
	font-size: 13.5px;
	color: var(--text-sub);
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
}
.card-meta {
	margin-top: 14px;
	display: flex;
	gap: 14px;
	font-size: 12px;
	color: var(--text-faint);
}
.card-meta span::before { content: "· "; }
.card-meta span:first-child::before { content: ""; }

/* variety on list page (no category context) */
.card-masonry-list .card:nth-child(5n+1) { --accent: var(--accent-1); }
.card-masonry-list .card:nth-child(5n+2) { --accent: var(--accent-2); }
.card-masonry-list .card:nth-child(5n+3) { --accent: var(--accent-3); }
.card-masonry-list .card:nth-child(5n+4) { --accent: var(--accent-4); }
.card-masonry-list .card:nth-child(5n+5) { --accent: var(--accent-5); }
.card-list .card-meta { flex-wrap: wrap; row-gap: 4px; }

/* ---------------- List page ---------------- */
.list-main { flex: 1; min-width: 0; }
.list-title {
	font-size: 24px;
	margin-bottom: 22px;
	padding-left: 14px;
	border-left: 6px solid var(--accent-1);
}
.pagination {
	margin-top: 30px;
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 8px;
}
.pagination a {
	padding: 8px 14px;
	border-radius: var(--radius-sm);
	background: var(--card-bg);
	box-shadow: var(--shadow-soft);
	font-size: 13.5px;
	font-weight: 600;
	color: var(--text-sub);
	transition: background 0.2s ease, color 0.2s ease;
}
.pagination a:hover { background: var(--accent-1); color: #fff; }

/* ---------------- Sidebar ---------------- */
.sidebar {
	width: 300px;
	flex-shrink: 0;
	display: flex;
	flex-direction: column;
	gap: 22px;
}
.side-block {
	background: var(--card-bg);
	border-radius: var(--radius-lg);
	box-shadow: var(--shadow-card);
	padding: 20px;
}
.side-block-title {
	font-size: 16px;
	font-weight: 700;
	margin-bottom: 14px;
	padding-left: 12px;
	border-left: 5px solid var(--accent-2);
}
.side-block-hot .side-block-title { border-left-color: var(--accent-4); }
.side-list li {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	gap: 10px;
	padding: 9px 0;
	border-bottom: 1px dashed #e9eaee;
	counter-increment: side-item;
}
.side-list li:last-child { border-bottom: none; }
.side-list a {
	font-size: 13.5px;
	color: var(--text-main);
	flex: 1;
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}
.side-list a:hover { color: var(--accent-2); }
.side-list-hot a:hover { color: var(--accent-4); }
.side-date {
	font-size: 11.5px;
	color: var(--text-faint);
	flex-shrink: 0;
}
.side-list { counter-reset: side-item; }
.side-list li::before {
	content: counter(side-item);
	flex-shrink: 0;
	width: 18px;
	height: 18px;
	border-radius: 5px;
	background: var(--accent-1-soft);
	color: var(--accent-1);
	font-size: 11px;
	font-weight: 700;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	order: -1;
}
.side-list-hot li::before { background: var(--accent-4-soft); color: var(--accent-4); }

/* ---------------- Article detail page ---------------- */
.show-main { flex: 1; min-width: 0; }
.show-card {
	background: var(--card-bg);
	border-radius: var(--radius-lg);
	box-shadow: var(--shadow-card);
	padding: 30px 32px 34px;
}
.show-title {
	font-size: 25px;
	line-height: 1.4;
	margin-bottom: 12px;
}
.show-info {
	display: flex;
	gap: 16px;
	flex-wrap: wrap;
	font-size: 13px;
	color: var(--text-faint);
	padding-bottom: 16px;
	border-bottom: 1px solid #edeef2;
}
.summary {
	margin: 20px 0;
	padding: 14px 18px;
	background: var(--accent-1-soft);
	border-left: 4px solid var(--accent-1);
	border-radius: var(--radius-sm);
	font-size: 14px;
	color: var(--text-sub);
}
.show-body {
	margin-top: 22px;
	font-size: 15.5px;
	color: var(--text-main);
	line-height: 1.9;
}
.show-body p { margin: 0 0 16px; }
.show-body img {
	margin: 14px auto;
	border-radius: var(--radius-md);
	box-shadow: var(--shadow-soft);
}
.show-nav {
	margin-top: 32px;
	padding-top: 20px;
	border-top: 1px solid #edeef2;
	display: flex;
	flex-direction: column;
	gap: 10px;
}
.show-nav-item {
	font-size: 13.5px;
	padding: 10px 14px;
	border-radius: var(--radius-sm);
	background: #f7f8fa;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}
.show-nav-item a { color: var(--accent-2); font-weight: 600; }
.show-nav-item a:hover { text-decoration: underline; }
.show-nav-label { color: var(--text-faint); }

/* ---------------- Footer ---------------- */
.site-footer { margin-top: 20px; }
.friend-links { background: var(--card-bg); border-top: 1px solid #eceef1; }
.friend-links-inner {
	max-width: 1200px;
	margin: 0 auto;
	padding: 20px 20px;
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 12px;
}
.friend-links-label {
	font-weight: 700;
	font-size: 13.5px;
	color: var(--text-sub);
	flex-shrink: 0;
}
.friend-links-list {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}
.friend-links-list a {
	font-size: 12.5px;
	color: var(--text-sub);
	padding: 5px 12px;
	border-radius: 999px;
	background: #f2f3f6;
}
.friend-links-list a:hover { background: var(--accent-1-soft); color: var(--accent-1); }
.copyright-bar {
	background: #23252f;
	color: #b7b9c4;
	text-align: center;
	font-size: 12.5px;
	padding: 16px 20px;
}
.copyright-bar a { color: #d7d9e2; }
.copyright-bar a:hover { color: #fff; }

/* ---------------- Responsive ---------------- */
@media (max-width: 992px) {
	.card-masonry { column-count: 2; }
}
@media (max-width: 768px) {
	.header-inner { padding: 12px 16px; }
	.site-nav { gap: 6px; }
	.site-nav a { padding: 6px 12px; font-size: 13px; }
	.home-main { padding: 22px 14px 40px; }
	.card-masonry { column-count: 1; }
	.page-wrap { flex-direction: column; padding: 20px 14px 40px; gap: 20px; }
	.sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; }
	.side-block { flex: 1 1 260px; }
	.show-card { padding: 22px 18px 26px; }
	.show-title { font-size: 21px; }
	.friend-links-inner { padding: 16px; }
}
@media (max-width: 480px) {
	.sidebar { flex-direction: column; }
	.cate-block-title { font-size: 19px; }
}

/* ---------------- Print ---------------- */
@media print {
	.site-header, .sidebar, .site-nav, .site-footer,
	.pagination, .show-nav, .cate-more { display: none !important; }
	body { background: #fff; }
	.card, .show-card { box-shadow: none; border: 1px solid #ddd; }
	.page-wrap { display: block; }
}