.data-demo {
    max-width: 980px;
}

.data-demo .card {
    padding: 18px;
}

.data-demo .lead {
    margin-top: 0;
    color: var(--muted);
}

.data-demo .panel {
    margin-top: 14px;
}

.data-demo textarea,
.data-demo pre {
    width: 100%;
    min-height: 220px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    font-family: Consolas, "Courier New", monospace;
    font-size: 0.92rem;
    line-height: 1.45;
}

.data-demo pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
}