:root {
--primary: #2563eb;
--primary-dark: #1a56db;
--primary-light: #dbeafe;
--primary-bg: #e8f0fe;
--text-main: #1e293b;
--text-muted: #64748b;
--text-light: #94a3b8;
--border-color: #e2e8f0;
--bg-light: #f8fafc;
--bg-card: #ffffff;
--shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
--shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.08);
--radius: 8px;
--radius-lg: 12px;
--transition: all 0.3s ease;
--max-width: 1200px;
--header-height: 70px;
--topbar-height: 40px;
}

/* ===== Category Main ===== */
.category-main {
padding: 28px 0 48px;
}

/* ============================================================
   1. 面包屑
   ============================================================ */
.breadcrumb-wrap {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
    padding: 12px 0;
}
.breadcrumb {
    font-size: 14px;
    color: var(--text-light);
}
.breadcrumb a {
    color: var(--text-light);
    transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep {
    margin: 0 8px;
    font-size: 12px;
    color: var(--border-light);
}
.breadcrumb .current {
    color: var(--text-dark);
    font-weight: 500;
}

/* Level1 Nav */
.level1-nav {
display: flex;
flex-wrap: wrap;
gap: 6px;
margin-bottom: 20px;
background: #ffffff;
padding: 12px 16px;
border-radius: var(--radius);
border: 1px solid var(--border-color);
}
.level1-nav a {
padding: 6px 20px;
font-size: 14px;
font-weight: 500;
color: var(--text-muted);
border-radius: 20px;
transition: var(--transition);
}
.level1-nav a:hover {
color: var(--text-main);
background: var(--bg-light);
}
.level1-nav a.active {
color: #ffffff;
background: var(--primary);
}

/* Level Filter */
.level-filter {
background: #ffffff;
border-radius: var(--radius);
border: 1px solid var(--border-color);
padding: 8px 16px 16px;
margin-bottom: 24px;
}
.filter-row {
display: flex;
flex-wrap: wrap;
align-items: center;
gap: 6px;
padding-top: 8px;
}
.filter-row+.filter-row {
border-top: 1px solid var(--border-color);
padding-top: 12px;
margin-top: 4px;
}
.filter-label {
font-size: 12px;
font-weight: 600;
color: var(--text-muted);
display: flex;
align-items: center;
gap: 4px;
margin-right: 6px;
flex-shrink: 0;
background: var(--bg-light);
padding: 2px 10px;
border-radius: 12px;
}
.filter-label i {
font-size: 11px;
}
.filter-item {
display: inline-flex;
align-items: center;
gap: 4px;
padding: 4px 14px;
font-size: 13px;
color: var(--text-muted);
border-radius: 16px;
transition: var(--transition);
background: transparent;
border: 1px solid transparent;
}
.filter-item:hover {
color: var(--text-main);
background: var(--bg-light);
border-color: var(--border-color);
}
.filter-item.active {
color: var(--primary);
background: var(--primary-light);
border-color: var(--primary-light);
}
.filter-item .item-icon {
font-size: 12px;
}
.filter-item .item-count {
font-size: 10px;
background: var(--border-color);
padding: 0 6px;
border-radius: 8px;
color: var(--text-muted);
font-weight: 600;
margin-left: 2px;
}
.filter-item.active .item-count {
background: rgba(37, 99, 235, 0.15);
color: var(--primary);
}

/* ===== Category Layout ===== */
.category-layout {
display: grid;
grid-template-columns: 1fr 340px;
gap: 28px;
}

/* ===== Category Content ===== */
.category-content {
background: #ffffff;
border-radius: var(--radius);
border: 1px solid var(--border-color);
padding: 24px 28px;
}

.category-header {
margin-bottom: 30px;
}
.category-breadcrumb {
font-size: 12px;
color: var(--text-light);
display: flex;
align-items: center;
flex-wrap: wrap;
gap: 4px;
margin-bottom: 4px;
}
.category-breadcrumb .crumb-item {
color: var(--text-muted);
}
.category-breadcrumb .crumb-item.active {
color: var(--text-main);
font-weight: 500;
}
.category-breadcrumb .sep {
color: var(--text-light);
font-size: 10px;
}
.category-header h2 {
font-size: 24px;
font-weight: 700;
color: #0f172a;
}
.category-desc {
font-size: 14px;
color: var(--text-muted);
display: block;
margin-top: 2px;
}

/* Toolbar */
.list-toolbar {
display: flex;
justify-content: space-between;
align-items: center;
padding: 12px 0 16px;
border-bottom: 1px solid var(--border-color);
margin-bottom: 16px;
flex-wrap: wrap;
gap: 8px;
}
.list-toolbar .count {
font-size: 14px;
color: var(--text-muted);
}
.list-toolbar .count strong {
color: var(--text-main);
}
.sort {
display: flex;
gap: 4px;
}
.sort a {
padding: 4px 14px;
font-size: 13px;
color: var(--text-muted);
border-radius: 16px;
transition: var(--transition);
}
.sort a:hover {
color: var(--text-main);
background: var(--bg-light);
}
.sort a.active {
color: var(--primary);
background: var(--primary-light);
}

/* Article List */
.article-list {
display: flex;
flex-direction: column;
gap: 20px;
}
.list-item {
display: flex;
gap: 18px;
padding-bottom: 20px;
border-bottom: 1px solid var(--border-color);
transition: var(--transition);
}
.list-item:last-child {
border-bottom: none;
padding-bottom: 0;
}
.list-item .item-thumb {
flex: 0 0 200px;
height: 130px;
border-radius: var(--radius);
overflow: hidden;
position: relative;
background: var(--bg-light);
}
.list-item .item-thumb img {
width: 100%;
height: 100%;
object-fit: cover;
transition: var(--transition);
}
.list-item:hover .item-thumb img {
transform: scale(1.03);
}
.list-item .item-thumb .item-tag {
position: absolute;
top: 8px;
left: 8px;
background: rgba(15, 23, 42, 0.8);
color: #ffffff;
font-size: 11px;
font-weight: 600;
padding: 2px 10px;
border-radius: 4px;
backdrop-filter: blur(4px);
}
.list-item .item-info {
flex: 1;
display: flex;
flex-direction: column;
justify-content: space-between;
min-width: 0;
}
.list-item .item-info h4 {
font-size: 17px;
font-weight: 600;
line-height: 1.4;
margin-bottom: 6px;
}
.list-item .item-info h4 a {
color: #0f172a;
transition: var(--transition);
}
.list-item .item-info h4 a:hover {
color: var(--primary);
}
.list-item .item-desc {
font-size: 14px;
color: var(--text-muted);
line-height: 1.5;
display: -webkit-box;
-webkit-line-clamp: 2;
-webkit-box-orient: vertical;
overflow: hidden;
margin-bottom: 8px;
}
.list-item .item-meta {
display: flex;
flex-wrap: wrap;
gap: 16px;
font-size: 12px;
color: var(--text-light);
}
.list-item .item-meta i {
margin-right: 4px;
}

/* Pagination */
.pagination {
display: flex;
justify-content: center;
align-items: center;
gap: 6px;
padding-top: 20px;
margin-top: 20px;
border-top: 1px solid var(--border-color);
flex-wrap: wrap;
}
.pagination a {
padding: 6px 14px;
font-size: 14px;
color: var(--text-muted);
border-radius: 6px;
transition: var(--transition);
border: 1px solid transparent;
cursor: default;
}
.pagination a:hover {
background: var(--bg-light);
border-color: var(--border-color);
}
.pagination a.active {
color: #ffffff;
background: var(--primary);
border-color: var(--primary);
}
.pagination a.prev,
.pagination a.next {
padding: 6px 16px;
}
.pagination a.disabled {
opacity: 0.4;
pointer-events: none;
}

/* No articles */
.no-articles {
text-align: center;
padding: 48px 20px;
color: var(--text-muted);
display: none;
}
.no-articles i {
font-size: 48px;
color: var(--border-color);
margin-bottom: 16px;
}
.no-articles h3 {
font-size: 18px;
color: var(--text-main);
margin-bottom: 4px;
}

/* ===== Sidebar ===== */
.category-right {
display: flex;
flex-direction: column;
gap: 20px;
}
.side-card {
background: #ffffff;
border-radius: var(--radius);
border: 1px solid var(--border-color);
padding: 18px 20px 20px;
}
.card-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 14px;
}
.card-header h4 {
font-size: 15px;
font-weight: 600;
display: flex;
align-items: center;
gap: 6px;
color: #0f172a;
}
.card-header .more {
font-size: 12px;
color: var(--text-light);
transition: var(--transition);
}
.card-header .more:hover {
color: var(--primary);
}

/* Recommend list */
.recommend-list {
display: flex;
flex-direction: column;
gap: 14px;
}
.recommend-list p {
	display: flex;
	align-items: flex-start;
	gap: 10px;
	font-size: 14px;
	color: var(--text-muted);
	line-height: 1.5;
}
.recommend-list p em {
	color: var(--primary);
	font-size: 16px;
	margin-top: 2px;
	flex-shrink: 0;
}

.recommend-item {
display: flex;
gap: 12px;
align-items: flex-start;
}
.recommend-item .rec-thumb {
flex: 0 0 56px;
height: 56px;
border-radius: var(--radius);
display: flex;
align-items: center;
justify-content: center;
font-size: 22px;
color: var(--primary);
background: var(--primary-light);
overflow:hidden;
}
.recommend-item .rec-thumb img{
    display:block;
    width:100%;
    height:100%;
    object-fit: cover;
}
.recommend-item .rec-info {
flex: 1;
min-width: 0;
}
.recommend-item .rec-info h5 {
font-size: 14px;
font-weight: 500;
line-height: 1.4;
margin-bottom: 2px;
}
.recommend-item .rec-info h5 a {
color: #0f172a;
transition: var(--transition);
}
.recommend-item .rec-info h5 a:hover {
color: var(--primary);
}
.recommend-item .rec-info .rec-time {
font-size: 12px;
color: var(--text-light);
}

/* Latest list */
.latest-list {
list-style: none;
display: flex;
flex-direction: column;
gap: 10px;
}
.latest-list li {
display: flex;
justify-content: space-between;
align-items: center;
font-size: 14px;
padding: 4px 0;
border-bottom: 1px solid var(--border-color);
}
.latest-list li:last-child {
border-bottom: none;
}
.latest-list li a {
color: var(--text-main);
transition: var(--transition);
flex: 1;
margin-right: 10px;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.latest-list li a:hover {
color: var(--primary);
}
.latest-list li .latest-time {
font-size: 12px;
color: var(--text-light);
flex-shrink: 0;
}

/* 广告位 */
.ad-card {
    background: linear-gradient(135deg, #1a5cff, #6c4dff);
    border-radius: var(--radius);
    padding: 20px 24px;
    color: #fff;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s;
}
.ad-card:hover {
    transform: translateY(-2px);
}
.ad-card-secondary {
    background: linear-gradient(135deg, #f97316, #fb923c);
}
.ad-content {
    text-align: center;
}
.ad-content .ad-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 0 12px;
    border-radius: 30px;
    font-size: 11px;
    line-height: 22px;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}
.ad-content .ad-icon {
    font-size: 32px;
    margin-bottom: 8px;
    display: block;
}
.ad-content h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 4px;
}
.ad-content p {
    font-size: 13px;
    opacity: 0.9;
    margin-bottom: 14px;
    line-height: 1.6;
}
.ad-content .ad-btn {
    display: inline-block;
    background: #fff;
    color: var(--primary);
    padding: 5px 24px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    transition: transform 0.2s;
}
.ad-card-secondary .ad-content .ad-btn {
    color: #f97316;
}
.ad-content .ad-btn:hover {
    transform: scale(1.04);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
.category-layout {
	grid-template-columns: 1fr;
}
.category-right {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 20px;
}
}
@media (max-width: 768px) {
:root {
	--topbar-height: auto;
}
.topbar {
	height: auto;
	padding: 8px 0;
}
.topbar .container {
	flex-wrap: wrap;
	gap: 6px;
}
.topbar-left {
	flex-wrap: wrap;
	gap: 10px;
}
.topbar-right {
	flex-wrap: wrap;
	gap: 8px;
}
.main-header .container {
	flex-wrap: nowrap;
}
.main-nav {
	position: fixed;
	top: var(--header-height);
	left: 0;
	width: 100%;
	background: #ffffff;
	flex-direction: column;
	align-items: stretch;
	padding: 16px 20px;
	gap: 2px;
	box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
	transform: translateY(-120%);
	transition: transform 0.3s ease;
	z-index: 98;
	border-top: 1px solid var(--border-color);
	max-height: 70vh;
	overflow-y: auto;
}
.main-nav.open {
	transform: translateY(0);
}
.main-nav a {
	padding: 10px 14px;
	border-radius: 6px;
	font-size: 15px;
}
.header-right .hamburger {
	display: block;
}
.search-modal-box {
	padding: 28px 20px;
}
.search-input-wrap input {
	font-size: 16px;
}
.search-input-wrap button {
	padding: 6px 16px;
	font-size: 13px;
}
.category-content {
	padding: 16px;
}
.list-item {
	flex-direction: column;
	gap: 12px;
}
.list-item .item-thumb {
	flex: 0 0 auto;
	width: 100%;
	height: 160px;
}
.category-header h2 {
	font-size: 20px;
}
.category-right {
	grid-template-columns: 1fr;
}
.footer-top {
	flex-direction: column;
}
.footer-bottom {
	flex-direction: column;
	align-items: flex-start;
}
.breaking-arrow {
	display: none;
}
.level1-nav {
	overflow-x: auto;
	flex-wrap: nowrap;
	padding: 8px 12px;
	gap: 4px;
	-webkit-overflow-scrolling: touch;
}
.level1-nav a {
	padding: 4px 14px;
	font-size: 13px;
	white-space: nowrap;
}
.filter-row {
	gap: 4px;
}
.filter-item {
	padding: 3px 10px;
	font-size: 12px;
}
.filter-label {
	font-size: 11px;
	padding: 1px 8px;
}
}
@media (max-width: 480px) {
.container {
	padding: 0 12px;
}
.logo-area .logo-text {
	font-size: 18px;
}
.logo-area .logo-tag {
	font-size: 9px;
	padding: 1px 8px;
}
.logo-area .logo-icon {
	font-size: 22px;
}
.topbar-left a {
	font-size: 12px;
}
.topbar-right a {
	font-size: 12px;
}
.list-item .item-info h4 {
	font-size: 15px;
}
.list-toolbar {
	flex-direction: column;
	align-items: flex-start;
}
.category-header h2 {
	font-size: 18px;
}
.side-card {
	padding: 14px 16px;
}
}

/* ===== Helper ===== */
.text-ellipsis {
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}