/* Maroval · corriente al hacer scroll (cable lateral + nodos por sección + bombilla) */
.chispa{position:fixed;z-index:60;pointer-events:none;left:max(14px,env(safe-area-inset-left,0px));top:calc(var(--cab-h,68px) + 18px);bottom:calc(74px + env(safe-area-inset-bottom,0px));width:2px}
.chispa-via{position:absolute;inset:0;border-radius:2px;background:var(--oro);opacity:.16}
.chispa-luz{position:absolute;left:0;right:0;top:0;height:100%;border-radius:2px;transform-origin:top;transform:scaleY(var(--p,0));
  background:linear-gradient(var(--oro3),var(--oro) 60%,var(--oro2));box-shadow:0 0 6px var(--oro),0 0 14px rgba(216,171,78,.35)}
.chispa-punta{position:absolute;left:50%;top:calc(var(--p,0) * 100%);width:8px;height:8px;margin:-4px 0 0 -4px;border-radius:50%;
  background:var(--oro2);box-shadow:0 0 6px 2px var(--oro2),0 0 16px 5px rgba(216,171,78,.45);animation:chispa-parpadeo 1.7s steps(1) infinite}
.chispa-punta::before,.chispa-punta::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:1.5px;margin:-.75px 0 0 -6px;border-radius:2px;background:var(--oro2);opacity:0;
  transform:rotate(35deg);animation:chispa-rayo 1.7s infinite}
.chispa-punta::after{transform:rotate(-50deg);animation-delay:.85s}
.chispa.quieta .chispa-punta,.chispa.quieta .chispa-punta::before,.chispa.quieta .chispa-punta::after{animation-play-state:paused}
.chispa-nodo{position:absolute;left:50%;width:9px;height:9px;margin:-4.5px 0 0 -4.5px;border-radius:50%;border:1.5px solid var(--oro);background:var(--bg);opacity:.5;transition:background .35s,opacity .35s,box-shadow .35s}
.chispa-nodo.on{background:var(--oro);opacity:1;box-shadow:0 0 8px var(--oro)}
.chispa-nodo.zas{animation:chispa-zas .6s ease-out}
.chispa-bombilla{position:fixed;z-index:60;left:calc(max(14px,env(safe-area-inset-left,0px)) - 13px);bottom:calc(30px + env(safe-area-inset-bottom,0px));width:28px;height:38px;
  display:block;color:var(--oro);text-decoration:none;--luz:0}
.chispa-bombilla svg{width:100%;height:100%;overflow:visible}
.chispa-bombilla .vidrio{fill:var(--oro2);fill-opacity:calc(var(--luz) * .9);stroke:currentColor;stroke-width:1.6;transition:fill-opacity .3s}
.chispa-bombilla .filamento{fill:none;stroke:var(--oro2);stroke-width:1.4;stroke-linecap:round;opacity:calc(.35 + var(--luz) * .65)}
.chispa-bombilla .rosca{fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
.chispa-bombilla svg{filter:drop-shadow(0 0 calc(var(--luz) * 10px) rgba(246,217,140,calc(var(--luz) * .85)))}
.chispa-bombilla.encendida::after{content:"";position:absolute;left:50%;top:38%;width:64px;height:64px;margin:-32px 0 0 -32px;border-radius:50%;
  background:radial-gradient(rgba(246,217,140,.45),rgba(246,217,140,0) 70%);animation:chispa-halo .9s ease-out;pointer-events:none;opacity:0}
.chispa-bombilla:focus-visible{outline:2px solid var(--oro2);outline-offset:4px;border-radius:8px}
@keyframes chispa-parpadeo{0%{opacity:1}7%{opacity:.45}9%{opacity:1}52%{opacity:.7}54%{opacity:1}}
@keyframes chispa-rayo{0%,62%,100%{opacity:0}64%{opacity:.95}70%{opacity:0}}
@keyframes chispa-zas{0%{box-shadow:0 0 0 0 rgba(246,217,140,.9)}100%{box-shadow:0 0 0 12px rgba(246,217,140,0)}}
@keyframes chispa-halo{0%{opacity:1;transform:scale(.4)}100%{opacity:0;transform:scale(1.6)}}
@media (max-width:760px){
  .chispa{left:max(5px,env(safe-area-inset-left,0px));width:1.5px;bottom:calc(24px + env(safe-area-inset-bottom,0px))}
  .chispa-nodo{width:7px;height:7px;margin:-3.5px 0 0 -3.5px}
  .chispa-bombilla{display:none}
}
@media (prefers-reduced-motion:reduce){
  .chispa-punta,.chispa-punta::before,.chispa-punta::after,.chispa-nodo.zas,.chispa-bombilla.encendida::after{animation:none}
  .chispa-nodo,.chispa-bombilla .vidrio{transition:none}
}
@media print{.chispa,.chispa-bombilla{display:none}}