:root{
/* Grain de papier : bruit SVG à très faible opacité, posé sur le blanc cassé. */
--grain-opacity:.035; /* @kind other */
--grain-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E"); /* @kind other */
}
body::before{content:"";position:fixed;inset:0;z-index:9999;pointer-events:none;background-image:var(--grain-image);background-size:180px 180px;opacity:var(--grain-opacity);mix-blend-mode:multiply}
@media print{body::before{display:none}}
.idmon-grain{position:relative}
.idmon-grain::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:var(--grain-image);background-size:180px 180px;opacity:var(--grain-opacity);mix-blend-mode:multiply;border-radius:inherit}