.rtr-dc { max-width: 520px; padding: 12px; border: 1px solid #e5e5e5; border-radius: 8px; }
.rtr-dc-form { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; }
.rtr-dc-domain { flex: 1; padding: 8px; }
.rtr-dc-check { padding: 8px 12px; cursor: pointer; }
.rtr-dc-result { padding: 8px; border-radius: 6px; }
.rtr-dc-result.ok { background: #e6ffea; }
.rtr-dc-result.err { background: #ffecec; }
.rtr-dc-result.unknown { background: #f4f6f8; }