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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: #000;
    background: #fff;
    padding: 2rem;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 4rem;
}

h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.intro {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 3rem;
    line-height: 1.7;
}

.section-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    margin-top: 3rem;
    color: #999;
}

.posts {
    list-style: none;
}

.posts li {
    margin-bottom: 1.5rem;
}

.posts a {
    color: #000;
    text-decoration: none;
    display: block;
}

.posts a:hover {
    opacity: 0.5;
}

.post-title {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.post-date {
    font-size: 0.9rem;
    color: #999;
}

article {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 4rem;
}

article h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

article .post-meta {
    color: #999;
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

article .back-link {
    display: inline-block;
    color: #000;
    text-decoration: none;
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

article .back-link:hover {
    opacity: 0.5;
}

article h2 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

article p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

article code {
    background: #f5f5f5;
    padding: 0.2rem 0.4rem;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

article pre {
    background: #f5f5f5;
    padding: 1rem;
    overflow-x: auto;
    margin-bottom: 1rem;
}

article pre code {
    background: none;
    padding: 0;
}

@media (max-width: 768px) {
    body {
        padding: 1.5rem;
    }

    main, article {
        padding-top: 2rem;
    }

    h1 {
        font-size: 1.75rem;
    }

    .intro {
        font-size: 1rem;
    }

    article h1 {
        font-size: 2rem;
    }
}