.iso-field{pointer-events:none;z-index:0;width:100%;height:100%;mask-image:radial-gradient(ellipse 62% 72% at 70% 44%, var(--mask-on) 28%, var(--mask-off) 78%);position:absolute;inset:0}.iso-field-line{fill:none;stroke:var(--iso-grid);stroke-width:1px;vector-effect:non-scaling-stroke}