.hsg { max-width: 820px; margin: 0 auto; }
.hsg-stage canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  background: #cfe8f7;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.hsg-controls { margin: 12px 0; text-align: center; }
.hsg-controls .btn { min-width: 200px; font-size: 1.1rem; padding: 12px 24px; }
.hsg-over { margin: 12px 0; padding: 16px; border: 1px solid #ddd; border-radius: 6px; background: #fafafa; text-align: center; }
.hsg-formrow { display: flex; gap: 8px; max-width: 420px; margin: 8px auto; }
.hsg-formrow input { flex: 1; }
.hsg-msg { min-height: 1.4em; margin: 8px 0; font-weight: 600; }
.hsg-msg.hsg-error { color: #b00020; }
.hsg-msg.hsg-ok { color: #1b7a2f; }
.hsg-lists { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 24px; }
.hsg-listbox { flex: 1 1 300px; min-width: 0; }
.hsg-list { padding-left: 28px; margin: 0; }
.hsg-list li { overflow: hidden; padding: 3px 0; border-bottom: 1px solid #eee; }
.hsg-list .hsg-pts { float: right; font-weight: 600; margin-left: 12px; }
.hsg-list .hsg-name { overflow-wrap: anywhere; }
.hsg-list .hsg-empty { list-style: none; color: #777; }