/* Mobile navigation returns to the seven-column overview. */
.mobnav{display:none!important}
.pillars-return{display:none}
@media(max-width:900px){
 .pillars-return{position:fixed;left:20px;bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:600;display:flex;align-items:center;justify-content:center;gap:8px;width:48px;height:48px;min-height:48px;max-width:calc(100vw - 40px);padding:0;border:1px solid #6532ff;border-radius:99px;background:#6532ff;box-shadow:0 4px 18px rgba(101,50,255,.24);backdrop-filter:blur(14px);color:#fff;font:inherit;font-size:12px;font-weight:600;text-decoration:none;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s,transform .25s,visibility .25s}
 .pillars-return.is-visible{opacity:1;visibility:visible;transform:none}
 .pillars-return svg{width:22px;height:22px;flex-shrink:0}
 body:has(.nav-burger[aria-expanded="true"]) .pillars-return{opacity:0;visibility:hidden}
}
@media(prefers-reduced-motion:reduce){.pillars-return{transition:none}}