body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f6f7fb;
  color: #222;
}

header {
  padding: 12px 16px;
  background: #ffffff;
  border-bottom: 1px solid #dcdfe6;
}

h1 {
  margin: 0;
  font-size: 1.2rem;
}

p {
  margin: 4px 0 0 0;
  font-size: 0.85rem;
  color: #555;
}

main {
  height: calc(100vh - 70px);
}

#network {
  width: 100%;
  height: 100%;
  background: #ffffff;
  border-top: 1px solid #e0e0e0;
}