/* Blue Dark endpoints requested by user; existing header art and text colors/fonts preserved. */
#app-shell header {
  position: relative;
  isolation: isolate;
  background: linear-gradient(90deg, #111927 0%, #003362 100%);
  border-bottom: 1px solid #647ccb66;
  overflow: hidden;
  box-shadow: inset 0 1px 0 #b5efff12, inset 0 -1px 0 #51cfff30, 0 3px 15px #0078b71c;
}
#app-shell header::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: url("assets/header-indigo-v3.svg") center / 100% 100% no-repeat;
  z-index: -1;
}
#app-shell header::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 1px;
  height: 2px;
  pointer-events: none;
  background: linear-gradient(90deg, #1185fb00, #4273ea55 15%, #7292f633 72%, #83afff55);
  box-shadow: 0 -2px 7px #3e71ed26;
}
#app-shell header .connection {
  font-family: "Chiron GoRound TC", "Microsoft YaHei", sans-serif;
  font-weight: 400;
  font-synthesis: none;
  font-size: 16px;
  letter-spacing: .35px;
  line-height: 1.3;
  color: #ffcf76;
}
#app-shell header .brand > strong,
#app-shell header .brand > span {
  text-shadow: 0 0 3px #e1f7ff99, 0 0 8px #72d2ff80, 0 0 16px #40aaff4d;
}
#app-shell header .brand > span {
  border-left: 1px solid #8d9ae84d;
  padding-left: 18px;
  margin-left: 3px;
}
#app-shell .brand > .brand-emblem {
  flex: 0 0 76px;
  overflow: visible;
  filter: drop-shadow(0 0 3px #00cfff66);
}
#app-shell .brand-emblem .emblem-outline {stroke: #31d9ff; stroke-width: 1.05; fill: none;}
#app-shell .brand-emblem .emblem-facet {stroke: #45dfff66; stroke-width: .6;}
#app-shell .brand-emblem .emblem-drone {stroke: #d5fbff; stroke-width: 1.25; fill: none;}