:root{color-scheme:light dark;--maxw: 900px;--pad: 18px;--border: rgba(127, 127, 127, .35)}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";line-height:1.4}.wrap{max-width:var(--maxw);margin:0 auto;padding:28px var(--pad)}.header h1{margin:0 0 6px;font-size:28px}.sub{margin:0;opacity:.8}.controls{display:flex;align-items:center;gap:14px;margin:18px 0;flex-wrap:wrap}.label{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--border);border-radius:10px;padding:6px 10px}.label>span{opacity:.85;font-size:14px}.select{border:1px solid var(--border);border-radius:8px;background:transparent;padding:6px 8px;cursor:pointer}.btn{padding:8px 12px;border:1px solid var(--border);border-radius:10px;background:transparent;cursor:pointer}.btn:disabled{opacity:.6;cursor:not-allowed}.meta{opacity:.75;font-size:14px}.error{border:1px solid rgba(255,0,0,.35);border-radius:12px;padding:12px 14px;margin:10px 0 16px}.panel{border:1px solid var(--border);border-radius:14px;overflow:hidden;padding:10px}.pre{margin:0;padding:14px;overflow:auto;min-height:220px;font-size:13px}