body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    max-width: 900px;
    margin: 0 auto;
    padding: 16px;
    color: #222;
    background: #fafafa;
    line-height: 1.5;
}

nav { margin-bottom: 8px; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.1rem; margin-top: 0; }

.block {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 16px;
    margin: 16px 0;
}

table.kv { border-collapse: collapse; width: 100%; }
table.kv th, table.kv td {
    text-align: left;
    padding: 6px 10px;
    border-bottom: 1px solid #eee;
    vertical-align: top;
    word-break: break-all;
}
table.kv th { width: 180px; color: #666; font-weight: 600; white-space: nowrap; }

pre {
    background: #f4f4f4;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 12px;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

code { background: #f0f0f0; padding: 1px 4px; border-radius: 4px; }

.ok { color: #1a7f37; font-weight: 600; }
.err { color: #c0392b; font-weight: 600; }
.hint { color: #666; font-size: 0.9rem; }

.btn {
    display: inline-block;
    background: #2563eb;
    color: #fff;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    font-size: 1rem;
    cursor: pointer;
}
.btn:hover { background: #1d4ed8; }