#stars-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.7}
#hex-bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  display:none;
  background-image:
    radial-gradient(circle at 0% 50%, transparent 24px, rgba(29,78,216,.13) 25px, rgba(29,78,216,.13) 26px, transparent 27px),
    radial-gradient(circle at 100% 50%, transparent 24px, rgba(29,78,216,.13) 25px, rgba(29,78,216,.13) 26px, transparent 27px);
  background-size: 54px 94px;
  background-position: 0 0, 27px 47px;
}
[data-theme="light"] #hex-bg { display:block; z-index:-1; }
[data-theme="light"] #stars-canvas { display:none; }
/* body прозрачный — hex виден в пустых зонах, карточки с фоном перекрывают его */
[data-theme="light"] body { background: transparent; }