*{box-sizing:border-box}html,body{color:#e2e8f0;background:#0f172a;margin:0;padding:0;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}main{max-width:960px;margin:0 auto;padding:24px}.card{background:#111827;border:1px solid #334155;border-radius:12px;margin-bottom:16px;padding:16px}.row{flex-wrap:wrap;gap:8px;display:flex}input,textarea,button{color:#e2e8f0;background:#0b1222;border:1px solid #475569;border-radius:8px;padding:10px 12px;font-size:14px}input,textarea{width:100%}button{cursor:pointer;background:#1d4ed8;border-color:#1d4ed8}button:disabled{opacity:.6;cursor:not-allowed}.muted{color:#94a3b8;font-size:13px}pre{background:#020617;border:1px solid #1e293b;border-radius:10px;padding:12px;font-size:12px;overflow:auto}