:root {
  --brand: #009be2;
  --bg: #f5f5f7;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --danger: #c0392b;
  --radius: 12px;
  --font: "SF Pro Text", "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 13px/1.45 var(--font);
  color: var(--text);
  background: linear-gradient(180deg, #eef3f8 0%, var(--bg) 40%, #ebebef 100%);
  min-height: 100vh;
}
.shell { max-width: 420px; margin: 0 auto; padding: 48px 20px 64px; }
.brand { margin-bottom: 28px; }
.brand .mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: #fff url("logo-mark.png") center/contain no-repeat; margin-bottom: 16px;
}
.brand h1 { margin: 0 0 8px; font-size: 22px; font-weight: 650; letter-spacing: -0.02em; }
.lede { margin: 0; color: var(--muted); font-size: 13px; }
.panel {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
  margin-bottom: 16px;
}
.panel h2 { margin: 0 0 14px; font-size: 17px; font-weight: 600; }
label { display: block; margin-bottom: 12px; color: var(--muted); font-size: 12px; }
input {
  display: block; width: 100%; margin-top: 6px;
  border: 1px solid #d2d2d7; border-radius: 8px;
  padding: 10px 12px; font: inherit; color: var(--text); background: #fff;
}
input:focus { outline: 2px solid color-mix(in srgb, var(--brand) 45%, transparent); border-color: var(--brand); }
.actions { display: flex; gap: 8px; margin-top: 8px; }
button {
  appearance: none; border: 0; border-radius: 8px;
  background: var(--brand); color: #fff;
  padding: 10px 14px; font: inherit; font-weight: 600; cursor: pointer;
}
button.secondary { background: #e8e8ed; color: var(--text); }
button:disabled { opacity: .5; cursor: default; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.muted { color: var(--muted); }
.error { color: var(--danger); margin: 10px 0 0; }
.list { display: grid; gap: 8px; }
.node {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px; border-radius: 10px; background: #f5f5f7;
}
.node strong { display: block; font-size: 13px; }
.node-actions { display: flex; gap: 8px; flex-shrink: 0; }
.node-actions button { padding: 8px 12px; font-size: 12px; }
.probe {
  margin-top: 12px; padding: 12px; border-radius: 8px;
  background: #111; color: #d7ffd7; font-size: 11px; overflow: auto;
}
[hidden] { display: none !important; }