/* Lectura vertical, sin visor ni controles de presentación. */
#hmp-share {position:fixed;z-index:1000;top:calc(12px + env(safe-area-inset-top,0px));right:12px;width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:transparent;text-decoration:none;filter:drop-shadow(0 1px 3px #0008);}
.hmp-whatsapp {display:block;width:26px;height:26px;background:#fff;-webkit-mask:url('whatsapp.png') center/contain no-repeat;mask:url('whatsapp.png') center/contain no-repeat;}
#hmp-share:focus-visible {outline:3px solid #8f8aff;outline-offset:3px;}
/* Columna de lectura: proporción original, centrada en pantallas amplias. */
.ZRRuDw {background:#f5f3f7;}
.KYQZFA {max-width:528px;margin-inline:auto;}
#hmp-share {right:max(12px,calc((100vw - 528px)/2 + 12px));}