/* 基础样式与安全配色 */
:root {
	--primary-color: #1a73e8;
	--secondary-color: #34a853;
	--accent-color: #fbbc05;
	--dark-color: #202124;
	--light-color: #f8f9fa;
	--text-color: #3c4043;
	--border-color: #dadce0;
}

* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: 'Helvetica Neue', Arial, sans-serif;
	line-height: 1.6;
	color: var(--text-color);
	background-color: var(--light-color);
}

a {
	text-decoration: none;
	color: var(--primary-color);
}

img {
	max-width: 100%;
	height: auto;
}

.container {
	width: 100%;
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 15px;
}

/* 头部样式 */
header {
	background-color: white;
	box-shadow: 0 2px 5px rgba(0,0,0,0.1);
	position: sticky;
	top: 0;
	z-index: 100;
}

.header-container {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 15px 0;
}

.logo {
	font-size: 24px;
	margin-left: 10px;
	font-weight: bold;
	color: var(--primary-color);
}

.logo span {
	color: var(--secondary-color);
}

nav ul {
	display: flex;
	list-style: none;
}

nav ul li {
	margin-left: 20px;
}

nav ul li a {
	color: var(--dark-color);
	font-weight: 500;
	padding: 5px 10px;
	border-radius: 4px;
	transition: all 0.3s ease;
}

nav ul li a:hover, 
nav ul li a.active {
	color: var(--primary-color);
	background-color: rgba(26, 115, 232, 0.1);
}

.mobile-menu-btn {
	display: none;
	background: none;
	border: none;
	font-size: 24px;
	cursor: pointer;
	color: var(--dark-color);
}

/* 主要内容区域 */
.main-content {
	padding: 30px 0;
	min-height: calc(100vh - 160px);
}

/* 页面内容 */
.page-content {
	display: none;
}

.page-content.active {
	display: block;
}

/* 首页特色样式 */
.hero {
	background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
	color: white;
	padding: 60px 0;
	text-align: center;
	border-radius: 8px;
	margin-bottom: 40px;
}

.hero h1 {
	font-size: 2.5rem;
	margin-bottom: 15px;
}

.hero p {
	font-size: 1.2rem;
	max-width: 700px;
	margin: 0 auto 25px;
}

.btn {
	display: inline-block;
	background-color: white;
	color: var(--primary-color);
	padding: 12px 25px;
	border-radius: 4px;
	font-weight: bold;
	transition: all 0.3s ease;
}

.btn:hover {
	transform: translateY(-3px);
	box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.section-title {
	font-size: 1.8rem;
	margin-bottom: 20px;
	padding-bottom: 10px;
	border-bottom: 2px solid var(--border-color);
	color: var(--dark-color);
}

/* 资讯卡片样式 */
.news-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
	gap: 25px;
	margin-bottom: 40px;
}

.news-card {
	background-color: white;
	border-radius: 8px;
	overflow: hidden;
	box-shadow: 0 3px 10px rgba(0,0,0,0.1);
	transition: transform 0.3s ease;
}

.news-card:hover {
	transform: translateY(-5px);
}

.news-card img {
	width: 100%;
	height: 180px;
	object-fit: cover;
}

.news-card-content {
	padding: 20px;
}

.news-card h3 {
	font-size: 1.2rem;
	margin-bottom: 10px;
	line-height: 1.4;
}

.news-card p {
	color: #5f6368;
	font-size: 0.9rem;
	margin-bottom: 15px;
}

.news-meta {
	display: flex;
	justify-content: space-between;
	font-size: 0.8rem;
	color: #80868b;
}

/* 资讯列表页样式 */
.breadcrumb {
	margin-bottom: 20px;
	font-size: 0.9rem;
}

.breadcrumb a {
	color: var(--text-color);
}

.breadcrumb span {
	color: var(--primary-color);
}

.list-filters {
	display: flex;
	margin-bottom: 25px;
	gap: 15px;
	flex-wrap: wrap;
}

.filter-btn {
	padding: 8px 15px;
	background-color: white;
	border: 1px solid var(--border-color);
	border-radius: 4px;
	cursor: pointer;
	transition: all 0.3s ease;
}

.filter-btn.active {
	background-color: var(--primary-color);
	color: white;
	border-color: var(--primary-color);
}

.pagination {
	display: flex;
	justify-content: center;
	margin-top: 40px;
	gap: 10px;
}

.pagination a {
	display: inline-block;
	padding: 8px 15px;
	background-color: white;
	border: 1px solid var(--border-color);
	border-radius: 4px;
}

.pagination a.active {
	background-color: var(--primary-color);
	color: white;
	border-color: var(--primary-color);
}

/* 资讯详情页样式 */
.article-header {
	margin-bottom: 30px;
}

.article-title {
	font-size: 2rem;
	line-height: 1.3;
	margin-bottom: 15px;
	color: var(--dark-color);
}

.article-meta {
	display: flex;
	gap: 20px;
	color: #5f6368;
	font-size: 0.9rem;
	margin-bottom: 20px;
}

.article-content {
	background-color: white;
	padding: 30px;
	border-radius: 8px;
	box-shadow: 0 3px 10px rgba(0,0,0,0.05);
	line-height: 1.8;
}

.article-content h2 {
	font-size: 1.5rem;
	margin: 25px 0 15px;
	color: var(--dark-color);
}

.article-content p {
	margin-bottom: 15px;
}

.article-content img {
	max-width: 100%;
	border-radius: 8px;
	margin: 20px 0;
}

.article-content blockquote {
	border-left: 4px solid var(--primary-color);
	padding-left: 20px;
	margin: 20px 0;
	font-style: italic;
	color: #5f6368;
}

.related-articles {
	margin-top: 50px;
}

/* 侧边栏样式 */
.sidebar {
	background-color: white;
	padding: 20px;
	border-radius: 8px;
	box-shadow: 0 3px 10px rgba(0,0,0,0.05);
	margin-bottom: 30px;
}

.sidebar h3 {
	font-size: 1.2rem;
	margin-bottom: 15px;
	padding-bottom: 10px;
	border-bottom: 1px solid var(--border-color);
}

.sidebar ul {
	list-style: none;
}

.sidebar ul li {
	margin-bottom: 10px;
	padding-bottom: 10px;
	border-bottom: 1px solid #f1f1f1;
}

.sidebar ul li:last-child {
	margin-bottom: 0;
	padding-bottom: 0;
	border-bottom: none;
}

/* 页脚样式 */
footer {
	background-color: var(--dark-color);
	color: white;
	padding: 40px 0 20px;
}

.footer-content {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 30px;
	margin-bottom: 30px;
}

.footer-column h3 {
	font-size: 1.2rem;
	margin-bottom: 20px;
	color: white;
}

.footer-column ul {
	list-style: none;
}

.footer-column ul li {
	margin-bottom: 10px;
}

.footer-column ul li a {
	color: #bdc1c6;
	transition: color 0.3s ease;
}

.footer-column ul li a:hover {
	color: white;
}

.copyright {
	text-align: center;
	padding-top: 20px;
	border-top: 1px solid #3c4043;
	color: #9aa0a6;
	font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
	.hero h1 {
		font-size: 2rem;
	}
	
	.article-title {
		font-size: 1.7rem;
	}
}

@media (max-width: 768px) {
	.header-container {
		flex-direction: column;
		align-items: flex-start;
	}
	
	nav {
		width: 100%;
		margin-top: 15px;
		display: none;
	}
	
	nav.active {
		display: block;
	}
	
	nav ul {
		flex-direction: column;
	}
	
	nav ul li {
		margin-left: 0;
		margin-bottom: 10px;
	}
	
	.mobile-menu-btn {
		display: block;
		position: absolute;
		top: 15px;
		right: 15px;
	}
	
	.hero {
		padding: 40px 0;
	}
	
	.hero h1 {
		font-size: 1.8rem;
	}
	
	.news-grid {
		grid-template-columns: 1fr;
	}
	
	.content-with-sidebar {
		flex-direction: column;
	}
}

@media (max-width: 576px) {
	.article-content {
		padding: 20px;
	}
	
	.article-title {
		font-size: 1.5rem;
	}
	
	.article-meta {
		flex-direction: column;
		gap: 5px;
	}
}

/* 内容布局 */
.content-with-sidebar {
	display: flex;
	gap: 30px;
}

.main-column {
	flex: 2;
}

.sidebar-column {
	flex: 1;
}