* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

button {
    margin: 10px 5px 10px 0;
    padding: 8px 16px;
}

select {
    padding: 4px 8px;
    font-size: 14px;
}

.test-section {
    margin: 20px 0;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.test-section h3 {
    margin-top: 0;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.test-result {
    margin: 10px 0;
}

.test-result h4 {
    margin: 5px 0;
    font-size: 14px;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin: 10px 0;
}

.result-table th,
.result-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
    vertical-align: top;
}

.result-table th {
    background: #f5f5f5;
    width: 200px;
}

.result-table td {
    font-family: monospace;
    word-break: break-all;
    white-space: pre-wrap;
}

.result-table td.empty {
    color: #999;
    font-style: italic;
}

.result-table td.error-value {
    color: #c0392b;
    font-weight: 500;
}

pre {
    background: #f8f8f8;
    padding: 10px;
    overflow-x: auto;
    font-size: 12px;
    border-radius: 4px;
}

.description {
    color: #666;
    font-size: 13px;
    margin-bottom: 10px;
}