body {
    font-family: 'Open Sans', sans-serif;
    margin: 0;
    padding: 0;
    background: white;
    line-height: 1.6;
    color: #2c3e50;
    scroll-behavior: smooth;
}
.container {
    padding: 2rem 5rem;
}
h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
}
.intro {
    margin-bottom: 3rem;
    font-size: 1.1rem;
    color: #34495e;
}
.category {
    margin-bottom: 2.5rem;
}
.category h2 {
    color: #2c3e50;
    margin-top: 0;
    font-size: 1.8rem;
    margin-bottom: 1rem;
}
ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}
li {
    margin-bottom: 0.8rem;
}
a {
    color: #007acc;
    text-decoration: underline;
    font-size: 1.1rem;
}
a:hover {
    color: #005c99;
}
@media (max-width: 600px) {
    .container {
        padding: 1rem;
    }
    h1 {
        font-size: 2rem;
    }
}

/* Article specific styles */
#content {
    color: #333;
}
#content h1, #content h2, #content h3 {
    color: #2c3e50;
    margin-top: 2rem;
}
#content code {
    background: #f8f9fa;
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}
#content pre {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
}
#content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 2rem auto;
}
#content blockquote {
    border-left: 4px solid #e9ecef;
    margin: 0;
    padding-left: 1rem;
    color: #6c757d;
}
.error {
    color: #dc3545;
    text-align: center;
    padding: 2rem;
}
.loading {
    text-align: center;
    color: #6c757d;
    padding: 2rem;
    font-family: 'Open Sans', sans-serif;
}