/* ── FULL HEIGHT BACKGROUND ──────────────────────────────────── */
html, body {
  min-height: 100% !important;
  background-color: #000000 !important;
}

.off-canvas-content,
.stacks_top,
#stacks_in_1 {
  min-height: 100vh !important;
  background-color: #000000 !important;
}