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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    margin-bottom: 60px;
    padding-bottom: 30px;
    border-bottom: 1px solid #eee;
}

h1 {
    font-size: 2.2em;
    font-weight: 400;
    margin-bottom: 10px;
    color: #2c3e50;
}

.tagline {
    font-size: 1.1em;
    color: #666;
    margin-bottom: 20px;
}

nav {
    margin-top: 20px;
}

nav a {
    color: #3498db;
    text-decoration: none;
    margin-right: 30px;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #2980b9;
    text-decoration: underline;
}

nav a.active {
    color: #2c3e50;
    font-weight: 600;
}

.content-section {
    margin-bottom: 50px;
}

h2 {
    font-size: 1.5em;
    font-weight: 600;
    margin-bottom: 20px;
    color: #2c3e50;
}

h3 {
    font-size: 1.3em;
    font-weight: 600;
    margin-bottom: 15px;
    color: #2c3e50;
}

.post-list {
    list-style: none;
}

.post-item {
    margin-bottom: 25px;
    padding: 20px 0;
    border-bottom: 1px solid #f5f5f5;
}

.post-item:last-child {
    border-bottom: none;
}

.post-title {
    font-size: 1.2em;
    font-weight: 600;
    margin-bottom: 8px;
}

.post-title a {
    color: #2c3e50;
    text-decoration: none;
    transition: color 0.3s ease;
}

.post-title a:hover {
    color: #3498db;
}

.post-meta {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 10px;
}

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

.about-section {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 40px;
}

.about-section p {
    margin-bottom: 15px;
    line-height: 1.7;
}

.book-review {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 30px;
    border-left: 4px solid #3498db;
}

.book-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 0.9em;
    color: #666;
}

.rating {
    color: #f39c12;
    font-weight: 600;
}

.back-link {
    margin-bottom: 30px;
}

.back-link a {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
}

.back-link a:hover {
    text-decoration: underline;
}

.article-content {
    line-height: 1.7;
}

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

.article-content h2 {
    margin-top: 40px;
    margin-bottom: 20px;
}

.article-content h3 {
    margin-top: 30px;
    margin-bottom: 15px;
}

.article-content ul, .article-content ol {
    margin-bottom: 20px;
    padding-left: 30px;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content blockquote {
    border-left: 4px solid #3498db;
    padding-left: 20px;
    margin: 30px 0;
    font-style: italic;
    color: #555;
}

.article-content code {
    background-color: #f4f4f4;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.article-content pre {
    background-color: #f4f4f4;
    padding: 20px;
    border-radius: 5px;
    overflow-x: auto;
    margin: 20px 0;
}

.article-content pre code {
    background: none;
    padding: 0;
}

footer {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid #eee;
    text-align: center;
    color: #666;
    font-size: 0.9em;
}

.social-links {
    margin-top: 15px;
}

.social-links a {
    color: #3498db;
    text-decoration: none;
    margin: 0 15px;
}

.social-links a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    body {
        padding: 15px;
    }

    h1 {
        font-size: 1.8em;
    }

    nav a {
        display: block;
        margin-bottom: 10px;
        margin-right: 0;
    }

    .about-section, .book-review {
        padding: 20px;
    }

    .book-meta {
        flex-direction: column;
        gap: 8px;
    }
}