/* RNG styles */
.rng-wrap{max-width:900px;margin:20px auto;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;color:#222}
.rng-title{font-size:28px;margin:0 0 6px}
.rng-note{color:#555;font-size:14px;margin:0 0 14px}
.rng-card{border:1px solid #e6e6e6;border-radius:12px;padding:16px;margin:16px 0;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.rng-sub{margin:4px 0 12px;color:#666}
.rng-row{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:8px}
.rng-field{display:flex;flex-direction:column;gap:6px;min-width:180px;flex:1 1 180px}
.rng-input{height:38px;line-height:38px;border:1px solid #cfd4dc;border-radius:8px;padding:0 10px;background:#fafafa;outline:none}
.rng-input:focus{border-color:#3d85c6;background:#fff;box-shadow:0 0 0 2px rgba(61,133,198,.15)}
.rng-radio label{margin-right:16px;font-weight:600}
.rng-btn{border:0;border-radius:8px;padding:10px 14px;background:#3d85c6;color:#fff;font-weight:700;cursor:pointer}
.rng-btn:hover{filter:brightness(.95)}
.rng-clear{background:#999}
.rng-actions{display:flex;gap:8px;margin-top:8px}
.rng-output{margin-top:12px}
.rng-result{width:100%;border:1px solid #cfd4dc;border-radius:8px;padding:10px;background:#fcfcfc;font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace}
.rng-label{margin-left:6px;color:#444}
.rng-footer{font-size:12px;color:#666;margin-top:8px}
@media (max-width:480px){.rng-field{min-width:140px}}