:root {
--primary-color: #53FF53;
--dark-color: #1a1a1a;
--light-color: #f5f5f5;
--text-color: #333;
--border-radius: 8px;
--transition: all 0.3s ease;
}

* {
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: inherit;
}

/* 导航栏样式 */
.header {
background-color: var(--primary-color);
position: sticky;
top: 0;
z-index: 1000;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
max-width: 1200px;
margin: 0 auto;
display: flex;
justify-content: space-between;
align-items: center;
height: 60px;
padding: 0 20px;
}

.logo {
font-size: 1.5rem;
font-weight: bold;
}

.nav-menu {
display: flex;
list-style: none;
}

.nav-item {
margin-left: 30px;
}

.nav-link {
padding: 8px 0;
position: relative;
transition: var(--transition);
}

.nav-link:hover {
color: var(--dark-color);
}

.nav-link::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
width: 0;
height: 2px;
background-color: var(--dark-color);
transition: var(--transition);
}

.nav-link:hover::after {
width: 100%;
}

.hamburger {
display: none;
cursor: pointer;
font-size: 1.5rem;
}

/* 主要内容区域 */
.container {
max-width: 1200px;
margin: 0 auto;
padding: 0 20px;
}

.section {
margin: 40px 0;
}

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

/* 最新文章列表 */
.latest-articles {
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 30px;
}

.article-card {
background: white;
border-radius: var(--border-radius);
padding: 20px;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
transition: var(--transition);
height: 100%;
}

.article-card:hover {
transform: translateY(-5px);
box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.article-title {
font-size: 1.3rem;
margin-bottom: 10px;
line-height: 1.4;
}

.article-meta {
color: #666;
font-size: 0.9rem;
margin-bottom: 15px;
display: flex;
align-items: center;
}

.article-meta::before {
content: "📅";
margin-right: 5px;
}

.article-excerpt {
color: #555;
line-height: 1.6;
}

/* 推荐文章图片列表 */
.featured-articles {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 20px;
}

.featured-card {
height: 250px;
border-radius: var(--border-radius);
overflow: hidden;
position: relative;
background-size: cover;
background-position: center;
transition: var(--transition);
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.featured-card:hover {
transform: scale(1.03);
box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.featured-card::after {
content: '';
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
}

.featured-content {
position: absolute;
bottom: 0;
left: 0;
width: 100%;
padding: 20px;
z-index: 2;
color: white;
}

.featured-title {
font-size: 1.1rem;
margin-bottom: 10px;
line-height: 1.3;
}

.featured-excerpt {
display: none;
}

/* 热门文章列表 */
.popular-articles {
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 30px;
}

.popular-card {
background: white;
border-radius: var(--border-radius);
padding: 20px;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
transition: var(--transition);
}

.popular-card:hover {
transform: translateY(-3px);
box-shadow: 0 8px 12px rgba(0, 0, 0, 0.1);
}

.popular-title {
font-size: 1.2rem;
margin-bottom: 10px;
line-height: 1.4;
}

.popular-meta {
display: flex;
justify-content: space-between;
color: #666;
font-size: 0.9rem;
margin-bottom: 15px;
}

.popular-date::before {
content: "📅";
margin-right: 5px;
}

.popular-views::before {
content: "👁️";
margin-right: 5px;
}

.popular-excerpt {
color: #555;
line-height: 1.5;
}

/* 文字介绍 */
.intro-section {
background: white;
border-radius: var(--border-radius);
padding: 30px;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.intro-content {
line-height: 1.7;
font-size: 1.1rem;
}

/* 友情链接 */
.links-section {
background: white;
border-radius: var(--border-radius);
padding: 30px;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.links-list {
display: flex;
flex-wrap: wrap;
gap: 15px;
}

.link-item {
padding: 8px 15px;
background-color: var(--primary-color);
border-radius: 20px;
font-size: 0.9rem;
transition: var(--transition);
}

.link-item:hover {
background-color: var(--dark-color);
color: white;
}

/* 底部 */
.footer {
background-color: var(--dark-color);
color: white;
text-align: center;
padding: 20px;
margin-top: 40px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
.hamburger {
display: block;
}

.nav-menu {
position: fixed;
top: 60px;
left: -100%;
width: 100%;
height: calc(100vh - 60px);
background-color: var(--primary-color);
flex-direction: column;
align-items: center;
justify-content: flex-start;
padding-top: 40px;
transition: var(--transition);
}

.nav-menu.active {
left: 0;
}

.nav-item {
margin: 15px 0;
}

.latest-articles,
.popular-articles {
grid-template-columns: 1fr;
}

.featured-articles {
grid-template-columns: repeat(2, 1fr);
}

.intro-section,
.links-section,
.copyright {
display: none;
}
}

@media (max-width: 768px) {
.featured-articles {
grid-template-columns: 1fr;
}

.popular-meta {
flex-direction: column;
gap: 5px;
}
}

@media (max-width: 500px) {
.featured-articles {
grid-template-columns: 1fr;
}
}