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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica', 'Arial', sans-serif;
    line-height: 1.7;
    color: #1a1a1a;
    background: #fafafa;
    padding: 2rem 1rem;
}

.container {
    max-width: 680px;
    margin: 0 auto;
}

header {
    margin-bottom: 3rem;
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.back {
    display: inline-block;
    color: #666;
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    transition: color 0.2s;
}

.back:hover {
    color: #0366d6;
}

.meta {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.links-row {
    display: flex;
    gap: 1.5rem;
}

.links-row a {
    color: #0366d6;
    text-decoration: none;
    font-size: 0.9rem;
}

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

article {
    margin-bottom: 3rem;
}

article p {
    margin-bottom: 1.25rem;
    font-size: 1rem;
}

article h2 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
    color: #333;
}

article code {
    background: #f0f0f0;
    padding: 0.15em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
}

article ul, article ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

article li {
    margin-bottom: 0.4rem;
}

article blockquote {
    border-left: 3px solid #ddd;
    padding-left: 1rem;
    color: #555;
    margin-bottom: 1.25rem;
    font-style: italic;
}

article figure {
    margin: 2rem 0;
}

article figure img {
    width: 100%;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
}

article figure.small img {
    width: 60%;
    display: block;
    margin: 0 auto;
}

article figcaption {
    font-size: 0.82rem;
    color: #888;
    margin-top: 0.5rem;
    line-height: 1.4;
}

article figcaption a {
    color: #888;
    text-decoration: underline;
}

footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
}

footer a {
    color: #333;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

footer a:hover {
    color: #0366d6;
}

/* Blog index styles */
.blog-list {
    list-style: none;
}

.blog-list li {
    padding: 1rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.blog-list a {
    color: #1a1a1a;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.05rem;
    transition: color 0.2s;
}

.blog-list a:hover {
    color: #0366d6;
}

.blog-list .desc {
    color: #666;
    font-size: 0.9rem;
    margin-top: 0.2rem;
}

.section-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #999;
    margin-top: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.index-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e0e0e0;
    text-align: center;
}

.index-footer a {
    color: #333;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.index-footer a:hover {
    color: #0366d6;
}

@media (max-width: 600px) {
    body {
        padding: 1.5rem 1rem;
    }

    header h1 {
        font-size: 1.6rem;
    }

    article p {
        font-size: 0.95rem;
    }
}