.ribbon{clip-path:polygon(0 0,100% 0,100% 100%,50% 82%,0 100%);box-shadow:0 6px 14px -6px var(--shadow-tint);transform-origin:top}@media (prefers-reduced-motion:no-preference){.ribbon{animation:ribbon-drop .9s var(--ease-out-quart) .25s both}}@keyframes ribbon-drop{0%{opacity:0;transform:scaleY(.25)}to{opacity:1;transform:scaleY(1)}}.spine{box-shadow:inset -10px 0 18px -14px #00000059}summary::-webkit-details-marker{display:none}