/* 极简科技风CSS */
:root {
    --primary: #2563eb;  /* 科技蓝 */
    --secondary: #1e40af;
    --dark: #1f2937;
    --light: #f9fafb;
    --gray: #6b7280;
    --border: 1px solid #e5e7eb;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: all 0.2s ease;
}

a:hover {
    color: var(--secondary);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 极简导航 */
header {
    background-color: white;
    border-bottom: var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 20px 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.5px;
}

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

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav ul li a {
    font-weight: 500;
    color: var(--dark);
    padding: 8px 0;
    border-bottom: 2px solid transparent;
}

nav ul li a:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* 主要内容区 */
.main-content {
    background-color: white;
    border-radius: 8px;
    margin: 40px 0;
    border: var(--border);
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark);
    padding-bottom: 15px;
    border-bottom: var(--border);
}

/* 极简卡片 */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.article-card {
    border: var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.2s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: var(--border);
}

.card-body {
    padding: 20px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark);
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--gray);
    margin-top: 15px;
}

/* 文章详情 */
.article-detail {
    max-width: 800px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 40px;
}

.article-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 15px;
    line-height: 1.3;
}

.article-meta {
    display: flex;
    gap: 20px;
    color: var(--gray);
    margin-bottom: 30px;
    font-size: 14px;
}

.article-image {
    width: 100%;
    max-height: 450px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 30px;
    border: var(--border);
}

.article-content {
    line-height: 1.8;
    font-size: 16px;
}

.article-content p {
    margin-bottom: 20px;
}

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

.pagination a {
    padding: 10px 18px;
    border: var(--border);
    border-radius: 6px;
    font-weight: 500;
}

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

/* 页脚 */
footer {
    background-color: var(--dark);
    color: white;
    padding: 40px 0;
    margin-top: 60px;
}

.copyright {
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

/* 响应式 */
@media (max-width: 768px) {
    nav ul {
        gap: 15px;
    }
    
    .article-grid {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 26px;
    }
}