/* F90 signature atmosphere v2: visible on both themes, without covering controls */
:root{
 --f90-scene-base:#090c14;
 --f90-scene-hot:rgba(224,29,65,.23);
 --f90-scene-edge:rgba(159,24,55,.17);
 --f90-scene-grid:rgba(245,83,112,.052);
 --f90-scene-border:rgba(255,77,109,.29);
}
:root[data-theme="cream"]{
 --f90-scene-base:#f6f0eb;
 --f90-scene-hot:rgba(182,28,68,.095);
 --f90-scene-edge:rgba(213,103,137,.11);
 --f90-scene-grid:rgba(135,32,63,.042);
 --f90-scene-border:rgba(154,43,77,.22);
}
html{background:var(--f90-scene-base)}
body{
 background-color:var(--bg)!important;
 background-image:
  radial-gradient(ellipse 55vw 50vh at 12% 8%,var(--f90-scene-hot),transparent 78%),
  radial-gradient(ellipse 52vw 48vh at 96% 63%,var(--f90-scene-edge),transparent 80%),
  radial-gradient(ellipse 45vw 42vh at 23% 112%,var(--f90-scene-hot),transparent 80%),
  linear-gradient(115deg,transparent 0 48%,var(--f90-scene-grid) 49.7%,transparent 51% 100%)!important;
 background-size:120% 120%,125% 125%,120% 120%,160px 160px!important;
 background-attachment:fixed!important;
 animation:f90-scene-shift 38s ease-in-out infinite alternate;
}
@keyframes f90-scene-shift{
 0%{background-position:0% 0%,100% 30%,25% 100%,0 0}
 100%{background-position:14% 8%,86% 65%,12% 85%,80px -80px}
}
/* More deliberate chrome-red accents, while keeping text and product imagery clear */
main .panel,main .record,main .method-tile,main .f90-recipient-item{
 border-color:color-mix(in srgb,var(--f90-scene-border) 50%,var(--line))!important;
}
main .panel{
 box-shadow:0 10px 30px rgba(0,0,0,.075),inset 0 1px 0 rgba(255,255,255,.025);
}
main .panel:hover,main .method-tile:hover{
 border-color:color-mix(in srgb,var(--accent) 44%,var(--line))!important;
}
main .section-head h2,main .page-head h1{position:relative}
main .section-head h2::after{
 content:"";display:block;width:42px;height:3px;margin-top:9px;border-radius:99px;
 background:linear-gradient(90deg,var(--accent),transparent);
 box-shadow:0 0 14px color-mix(in srgb,var(--accent) 38%,transparent);
}
:root[data-theme="cream"] main .panel{box-shadow:0 8px 24px rgba(85,38,52,.07)}
:root[data-theme="cream"] body{background-color:var(--bg)!important}
body.f90-in-maintenance{animation:none!important}
@media(max-width:760px){
 body{background-attachment:scroll!important;background-size:150% 130%,140% 120%,150% 130%,180px 180px!important;animation-duration:55s}
 main .panel{box-shadow:0 5px 18px rgba(0,0,0,.055)}
}
@media(prefers-reduced-motion:reduce){
 body{animation:none!important}
}
@media(prefers-reduced-data:reduce){
 body{animation:none!important;background-image:radial-gradient(ellipse at 15% 5%,var(--f90-scene-hot),transparent 70%)!important}
}

/* v3 performance correction: animate composite layers instead of repainting background-position */
body{animation:none!important;background-attachment:scroll!important;background-size:cover!important;background-position:center!important}
body::before,body::after{z-index:0!important;opacity:.5;transform:translate3d(0,0,0);will-change:transform;backface-visibility:hidden}
body::before{background:radial-gradient(ellipse 45% 34% at 12% 18%,var(--f90-scene-hot),transparent 75%),radial-gradient(ellipse 40% 35% at 88% 75%,var(--f90-scene-edge),transparent 78%)!important;animation:f90-scene-layer 35s ease-in-out infinite alternate!important}
body::after{background-image:linear-gradient(125deg,transparent 48%,var(--f90-scene-grid) 49.5%,transparent 51%),radial-gradient(circle at 22% 35%,var(--f90-scene-border) 0 1px,transparent 2px)!important;background-size:190px 190px,240px 240px!important;opacity:.24;animation:f90-scene-lines 50s linear infinite!important}
@keyframes f90-scene-layer{from{transform:translate3d(-2%,2%,0) scale(1)}to{transform:translate3d(3%,-3%,0) scale(1.06)}}
@keyframes f90-scene-lines{from{transform:translate3d(0,0,0)}to{transform:translate3d(60px,-48px,0)}}
#mainContent,.site-footer{z-index:1}
#mainContent{position:relative;isolation:isolate}
#mainContent::before{content:"";position:absolute;z-index:-1;pointer-events:none;top:30px;inset-inline-end:0;width:min(44vw,430px);height:min(44vw,430px);border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--accent) 11%,transparent),transparent 72%);opacity:.75}
:root[data-theme="cream"] body::before{opacity:.35}
:root[data-theme="cream"] body::after{opacity:.14}
@media(max-width:760px){body::before{opacity:.32}body::after{opacity:.1}#mainContent::before{width:220px;height:220px;opacity:.45}}
@media(prefers-reduced-motion:reduce){body::before,body::after{animation:none!important;will-change:auto!important}}
@media(prefers-reduced-data:reduce){body::after{display:none!important}}


/* Low-power mobile mode: keep the brand colors and watermark, but do not
   continuously animate oversized full-screen pseudo-elements. */
@media(max-width:760px){
  body::before,body::after{
    animation:none!important;
    will-change:auto!important;
  }
  #mainContent::before{
    display:none!important;
  }
}