body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #374151;
    background-color: #f9fafb;
    margin: 0;
    padding: 0;
    font-size: 16px;
}

.container {
    max-width: 768px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.header {
    text-align: center;
    margin-bottom: 3rem;
}

.title {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.4;
    color: #1f2937;
    margin-bottom: 1rem;
}

.meta {
    color: #6b7280;
    font-size: 0.875rem;
}

.content {
    background-color: white;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.content h2 {
    color: #1f2937;
    font-size: 1.3rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.content p {
    margin-bottom: 1.5rem;
}
.article-footer {
    padding-top: 20px;
}
.article-footer p {
    padding-top: 20px;
    margin-bottom: 0;
    font-weight: 600;
    border-top: 1px solid #eee;
}
article .code {
    border: 1px solid #eee;
    padding: 1rem;
    border-radius: 4px;
    font-size: .8rem;
}
article table {
    border: 1px solid #eee;
    border-collapse: collapse;
}
article table th {
    border: 0;
    padding: .5rem 1rem;
    font-weight: 600;
    font-size: 90%;
}
article table td {
    border-top: 1px solid #eee;
    padding: 1rem;
}
.back-link {
    display: inline-block;
    margin-top: 2rem;
    color: #2563eb;
    text-decoration: none;
}

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

.footer {
    text-align: center;
    padding: 2rem 0;
    color: #6b7280;
    font-size: 0.875rem;
}

.site-header {
    background-color: #000;
    padding-inline: 1rem;
}

.site-header-content {
    max-width: 768px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.site-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: #000;
    font-size: 1.5rem;
    font-weight: 600;
}

.site-title svg {
    color: #2563eb; /* blue-600 */
}

.site-title span {
    font-size: 1.5rem;
    font-weight: 600;
} 
.site-title img {
    height: 1.5rem;
} 
.site-header .cta-button {
    font-size: .8rem;
    padding: 6px 8px;

}
@media screen and (min-width: 992px) {
    .site-title img {
        height: 2rem;
    } 
    .site-header .cta-button {
        background: #007bff;
        color: white;
        padding: 10px 15px;
        font-size: 1rem;
    }
}
/* Progress Bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: #007bff;
    transition: width 0.2s;
    z-index: 100;
}
/* CTA Button */
.cta-button {
    display: inline-block;
    background: #007bff;
    color: white;
    padding: 10px 15px;
    margin: 20px 0;
    font-size: 1rem;
    transition: 0.3s;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
}
.cta-button:hover { background: #0056b3; }
/* Key Takeaway */
.key-takeaway {
    background: #eef6ff;
    padding: 15px;
    border-left: 5px solid #007bff;
    margin: 20px 0;
    font-weight: bold;
}
/* Related Posts */
.related-posts {
    margin-top: 30px;
    padding: 20px;
}
.related-posts h3 { margin-top: 10px;display: flex;align-items: center;gap: 4px; }
.related-posts .related-posts-icon { width:20px; }
.related-posts ul { list-style: none; padding: 0; }
.related-posts ul li { margin: 8px 0; }
.related-posts ul li a { text-decoration: none; color: #007bff; }
.related-posts ul li a:hover { text-decoration: underline; }