:root{--bg:#0b1220;--panel:#121a2b;--text:#e8eefc;--muted:#9aa8c7;--accent:#3b82f6;--bad:#ef4444}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}main{max-width:960px;margin:0 auto;padding:32px 20px}input{background:#0f172a;border:1px solid #334155;color:var(--text);border-radius:8px;padding:10px 12px}button{background:var(--accent);border:none;color:white;padding:10px 14px;border-radius:8px;font-weight:600;cursor:pointer}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:12px;gap:12px;margin-top:20px}.card{background:var(--panel);border:1px solid #1f2a44;border-radius:12px;padding:14px}.card .label{color:var(--muted);font-size:.85rem}.card .value{font-size:1.5rem;font-weight:700}.muted{color:var(--muted)}.error{color:var(--bad)}.tabs{display:flex;gap:8px;margin:16px 0}button.secondary{background:transparent;border:1px solid #334155;color:var(--text)}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:8px 6px;border-bottom:1px solid #1f2a44;font-size:.92rem}