/* Scientific marginalia: edge-biased, static, and kept below every content layer. */
body { isolation: isolate; }
.science-backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  user-select: none;
  color: var(--accent, #87d4c2);
  --science-opacity: .14;
  --science-secondary-opacity: .075;
}
.science-wash {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 100% 12%, color-mix(in srgb, var(--accent, #87d4c2) 7%, transparent), transparent 56%),
    radial-gradient(ellipse at 0% 91%, color-mix(in srgb, var(--rust, #d9a17c) 5%, transparent), transparent 47%),
    radial-gradient(ellipse at 38% 45%, color-mix(in srgb, var(--paper-deep, #14232e) 35%, transparent), transparent 65%);
}
.science-diagram {
  position: absolute;
  width: clamp(470px, 55vw, 800px);
  max-width: none;
  height: auto;
  overflow: visible;
  stroke: currentColor;
  stroke-width: .8;
  stroke-linecap: round;
  stroke-linejoin: round;
  shape-rendering: geometricPrecision;
}
.science-diagram--primary {
  right: clamp(-280px, -12vw, -110px);
  top: 66px;
  opacity: var(--science-opacity);
  mask-image: linear-gradient(90deg, transparent 1%, #000 56%, #000 93%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent 1%, #000 56%, #000 93%, transparent);
}
.science-diagram--secondary {
  left: clamp(-335px, -24vw, -220px);
  bottom: -180px;
  width: clamp(430px, 45vw, 650px);
  opacity: var(--science-secondary-opacity);
  transform: rotate(-12deg);
  mask-image: linear-gradient(90deg, #000 30%, transparent 92%);
  -webkit-mask-image: linear-gradient(90deg, #000 30%, transparent 92%);
}
.science-grid { stroke-width: .8; }
.science-strong { stroke-width: 1.35; }
.science-accent { stroke: var(--rust, #d9a17c); stroke-width: 1.7; }
.science-dashed { stroke-width: .8; stroke-dasharray: 3 9; }
.science-node { fill: currentColor; stroke-width: 0; }
.science-backdrop--torus .science-diagram--primary { top: 105px; }
.science-backdrop--orbits .science-diagram--primary { transform: rotate(9deg); }
.science-backdrop--waves .science-diagram--primary { top: 110px; transform: rotate(-7deg); }
.science-backdrop--lattice .science-diagram--primary { transform: rotate(8deg); }
:root[data-theme="paper"] .science-backdrop {
  --science-opacity: .12;
  --science-secondary-opacity: .065;
}
:root[data-theme="graphite"] .science-backdrop {
  --science-opacity: .13;
  --science-secondary-opacity: .07;
}
@media (max-width: 700px) {
  .science-diagram--primary {
    width: 480px;
    right: -272px;
    top: 100px;
    opacity: calc(var(--science-opacity) * .75);
  }
  .science-diagram--secondary { width: 430px; left: -300px; bottom: -120px; }
  .science-wash {
    background:
      radial-gradient(ellipse at 100% 9%, color-mix(in srgb, var(--accent, #87d4c2) 5%, transparent), transparent 65%),
      radial-gradient(ellipse at 0% 95%, color-mix(in srgb, var(--rust, #d9a17c) 4%, transparent), transparent 48%);
  }
}
@media (prefers-contrast: more), (forced-colors: active) {
  .science-backdrop { display: none; }
}
@media print {
  .science-backdrop { display: none !important; }
}