:root {
    --primary-color: #333;
    --accent-color: #007bff;
    --bg-color: #f9f9f9;
    --text-color: #444;
    --header-bg: #fff;
    --footer-bg: #222;
    --footer-text: #aaa;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

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

/* Header */
.site-header {
    background-color: var(--header-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.main-nav a {
    font-weight: 500;
    color: var(--primary-color);
}

.main-nav a.active {
    color: var(--accent-color);
}

/* Main Content */
.site-main {
    flex: 1;
}

.hero {
    background-color: #fff;
    padding: 60px 0;
    text-align: center;
    margin-bottom: 40px;
    border-bottom: 1px solid #eee;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    color: #666;
}

/* Posts */
.posts {
    display: grid;
    gap: 30px;
    margin-bottom: 60px;
}

.post-card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    border: 1px solid #eee;
    transition: transform 0.3s ease;
}

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

.post-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.post-card h3 a {
    color: var(--primary-color);
}

.post-card h3 a:hover {
    color: var(--accent-color);
}

.post-meta {
    font-size: 0.9rem;
    color: #888;
    margin-bottom: 15px;
}

.post-excerpt {
    color: #555;
}

/* Footer */
.site-footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 40px 0;
    text-align: center;
    margin-top: auto;
}

.site-footer p {
    margin-bottom: 10px;
}

.beian-info {
    font-size: 0.9rem;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #333;
}

.beian-info p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.beian-info img {
    width: 16px;
    height: 16px;
    vertical-align: middle;
}

.beian-info a {
    color: #888;
}

.beian-info a:hover {
    color: #fff;
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 600px) {
    .site-header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
}