:root {
    --bg: #f4f5f7; --card: #fff; --text: #1d2330; --muted: #6b7280; --line: #e3e6eb;
    --ok: #16a34a; --warn: #d97706; --bad: #dc2626; --idle: #9ca3af; --accent: #2563eb;
  }
  @media (prefers-color-scheme: dark) {
    :root { --bg: #111418; --card: #1a1f26; --text: #e6e8eb; --muted: #9aa3ae; --line: #2a313b;
            --ok: #22c55e; --warn: #f59e0b; --bad: #ef4444; --idle: #6b7280; --accent: #60a5fa; }
  }
  * { box-sizing: border-box; }
  body { margin: 0; font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
         background: var(--bg); color: var(--text); }
  header { display: flex; align-items: center; justify-content: space-between; gap: 12px;
           max-width: 1100px; margin: 0 auto; padding: 20px 16px 8px; }
  h1 { font-size: 20px; margin: 0; }
  main { max-width: 1100px; margin: 0 auto; padding: 8px 16px 32px;
         display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; }
  .card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px;
          display: flex; flex-direction: column; gap: 12px; }
  .top { display: flex; align-items: center; gap: 10px; }
  .dot { width: 12px; height: 12px; border-radius: 50%; flex: none; background: var(--idle); }
  .dot.ok { background: var(--ok); } .dot.warn { background: var(--warn); }
  .dot.bad { background: var(--bad); } .dot.busy { background: var(--accent); animation: p 1s infinite; }
  @keyframes p { 50% { opacity: .35; } }
  .name { font-weight: 600; font-size: 17px; }
  .where { color: var(--muted); font-size: 13px; margin-left: auto; }
  dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; margin: 0; font-size: 14px; }
  dt { color: var(--muted); } dd { margin: 0; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
  .upd { color: var(--warn); font-weight: 600; }
  .err { color: var(--bad); font-size: 13px; }
  .ports { display: flex; flex-wrap: wrap; gap: 4px 6px; }
  .port { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; padding: 1px 7px;
          border: 1px solid var(--line); border-radius: 5px; font-variant-numeric: tabular-nums; }
  .port::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--idle); }
  .port.on::before { background: var(--ok); } .port.off::before { background: var(--bad); }
  .btns { display: flex; gap: 8px; flex-wrap: wrap; }
  button { font: inherit; font-size: 14px; padding: 7px 14px; border-radius: 7px; cursor: pointer;
           border: 1px solid var(--line); background: var(--card); color: var(--text); }
  button:hover:not(:disabled) { border-color: var(--accent); }
  button:disabled { opacity: .45; cursor: default; }
  button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
  details { font-size: 13px; }
  summary { cursor: pointer; color: var(--muted); }
  pre { margin: 6px 0 0; padding: 8px; background: var(--bg); border-radius: 6px; max-height: 220px;
        overflow: auto; white-space: pre-wrap; font-size: 12px; }
  .net { max-width: 1100px; margin: 0 auto; padding: 0 16px 8px; display: flex; flex-wrap: wrap;
         gap: 6px 16px; font-size: 14px; color: var(--muted); }
  .net b { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }
  .net .bad b { color: var(--bad); }
  .foot { max-width: 1100px; margin: 0 auto; padding: 0 16px 24px; color: var(--muted); font-size: 13px; }
  .user { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
  #who { color: var(--muted); font-size: 13px; }
  [hidden] { display: none !important; }
  .login { max-width: 340px; margin: 12vh auto 0; }
  .login h1 { margin-bottom: 4px; }
  .login label { display: flex; flex-direction: column; gap: 4px; font-size: 14px; color: var(--muted); }
  .login input { font: inherit; padding: 8px 10px; border-radius: 7px; border: 1px solid var(--line);
                 background: var(--bg); color: var(--text); }
  .login input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
  .pw { margin: 8px auto 16px; }
  .pw h2 { margin: 0; font-size: 17px; }
  .note { margin: 0; font-size: 14px; color: var(--warn); }
  .sess { max-width: 1100px; margin: 0 auto; padding: 0 16px 16px; }
  .sess h2 { font-size: 16px; margin: 8px 0; }
  .tablewrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
  .sess table { width: 100%; border-collapse: collapse; font-size: 14px; }
  .sess th, .sess td { text-align: left; padding: 7px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
  .sess th { color: var(--muted); font-weight: 500; font-size: 13px; }
  .sess tr:last-child td { border-bottom: 0; }
  .sess td { font-variant-numeric: tabular-nums; }
  .you { color: var(--accent); font-size: 12px; margin-left: 6px; }