:root{
    --bg:#f7f9fc; --card:#ffffff; --primary:#1e90ff; --muted:#6b7280;
    --radius:12px; --shadow: 0 6px 18px rgba(15,23,42,0.06);
    font-family: Inter, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  }
  html,body{height:100%;margin:0;background:linear-gradient(180deg,#f3f6fb 0%,var(--bg) 100%);}
  .app{max-width:1200px;margin:28px auto;padding:20px;display:grid;grid-template-columns:1fr 360px;gap:20px;align-items:start}
  header{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
  .logo{display:flex;align-items:center;gap:12px}
  .logo .mark{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,var(--primary),#4fb3ff);box-shadow:var(--shadow)}
  .title{font-weight:600;font-size:18px;color:#0f172a}
  .status{font-size:13px;color:var(--muted);background:#fff;padding:8px 12px;border-radius:10px;box-shadow:var(--shadow);display:flex;gap:10px;align-items:center}
  .card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
  .form{padding:6px 0}
  label{display:block;font-weight:600;margin-bottom:8px;color:#0f172a;font-size:13px}
  textarea,input{width:100%;box-sizing:border-box;border:1px solid #e6e9ef;padding:12px;border-radius:10px;background:#fff;font-size:14px;color:#0f172a}
  textarea{min-height:160px;resize:vertical}
  .small{font-size:12px;color:var(--muted);margin-top:6px}
  .row{display:flex;gap:12px}
  .btn{background:var(--primary);color:#fff;padding:12px 16px;border-radius:10px;border:0;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;gap:8px}
  .btn:active{transform:translateY(1px)}
  .toolbar{display:flex;gap:8px;margin-bottom:8px}
  .tool{background:#f1f5f9;border-radius:8px;padding:8px 10px;font-weight:600;color:#0f172a;cursor:pointer;border:1px solid #eef2f7}
  .sidebar{display:flex;flex-direction:column;gap:12px}
  .metric{display:flex;justify-content:space-between;align-items:center;padding:10px;border-radius:10px;background:linear-gradient(180deg,#fff,#fbfdff);border:1px solid #eef2f7}
  .metric .label{font-size:13px;color:var(--muted)}
  .metric .value{font-weight:700;color:#0f172a}
  .chart{height:120px;background:linear-gradient(90deg,#f8fafc,#fff);border-radius:8px;padding:12px;display:flex;align-items:end;gap:6px}
  .bar{width:18px;border-radius:6px;background:linear-gradient(180deg,var(--primary),#4fb3ff);display:inline-block}
  .logs{height:160px;overflow:auto;background:#0b1220;color:#dbeafe;padding:12px;border-radius:8px;font-family:monospace;font-size:13px}
  .help{font-size:12px;color:var(--muted);margin-top:6px}
  footer{grid-column:1/-1;margin-top:8px;font-size:12px;color:var(--muted);text-align:center}
  @media(max-width:980px){.app{grid-template-columns:1fr;max-width:920px;padding:12px}.sidebar{order:2}}