body {
    font-family: Arial, sans-serif;
    line-height: 1.4;
    margin: 0;
}

.page {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px;
}

#svgContainer {
    width: 100%;
    height: 600px;
    border: 1px solid #ccc;
    overflow: hidden;
    position: relative;
}

#svgRoot {
    width: 100%;
    height: 100%;
    cursor: grab;
    touch-action: none;
}

#svgRoot.dragging {
    cursor: grabbing;
}

.svgHelp {
    position: absolute;
    top: 8px;
    left: 8px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #ccc;
    padding: 6px 8px;
    font-size: 12px;
}

.viewer {
    width: 100%;
    height: 600px;
    border: 1px solid #ccc;
}

.videos iframe {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    border: 1px solid #ccc;
}

pre {
    background: #f6f6f6;
    border: 1px solid #ccc;
    padding: 12px;
    overflow: auto;
}

code {
    font-family: Consolas, "Courier New", monospace;
    font-size: 13px;
}