body {
    font-family: Arial, Helvetica, sans-serif;
    max-width: 900px;
    margin: auto;
    padding: 20px;
    line-height: 1.6;
    color: #222;
}

h1, h2 {
    border-bottom: 2px solid #eee;
    padding-bottom: 5px;
}

img {
    max-width: 100%;
    border-radius: 6px;
    margin: 10px 0;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 15px;
}

ul {
    margin-left: 20px;
}

.caption {
    font-size: 0.9em;
    color: #555;
    text-align: center;
}

.code-placeholder {
    background: #f4f4f4;
    border: 1px dashed #aaa;
    padding: 20px;
    text-align: center;
    color: #666;
    margin-top: 10px;
}

footer {
    margin-top: 40px;
    font-size: 0.85em;
    color: #666;
    text-align: center;
}