body {
  font-family: system-ui, sans-serif;
  max-width: 48rem;
  margin: 2rem auto;
  padding: 0 1rem;
  line-height: 1.5;
  color: #333;
}

ul {
  padding-left: 1.5rem;
}

/* ── Option 1: Connected Bullets (vertical line through centers) ── */

ul.connected-bullets {
  list-style: none;
  padding-left: 20px;
  position: relative;
}

ul.connected-bullets::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 24px;
  width: 2px;
  background-color: #007bff;
  z-index: 1;
}

ul.connected-bullets li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 15px;
}

ul.connected-bullets li::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 6px;
  width: 10px;
  height: 10px;
  background-color: #007bff;
  border-radius: 50%;
  z-index: 2;
}

/* ── Option 2: Architectural Tree Hook ── */

.list-tree-container {
  position: relative;
  padding-top: 20px;
}

.list-tree-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  width: 50px;
  height: 1px;
  background-color: #333;
}

ul.tree-list {
  list-style: none;
  padding-left: 20px;
  position: relative;
}

ul.tree-list::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 13px;
  left: 20px;
  width: 1px;
  background-color: #333;
}

ul.tree-list li {
  position: relative;
  padding-left: 15px;
  margin-bottom: 12px;
}

ul.tree-list li::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 12px;
  width: 10px;
  height: 1px;
  background-color: #333;
}

.tree li.module{
  border: 1px solid #888888;
  min-width: 300px;
  max-width: 600px;
}