/* 20261012-submotion01. Every selector targets a NEW .s3-sub-* node.
   Never assign grouping properties to an existing preserve-3d chain.
   Geometry uses CSS/DOM; photographic assets belong to the parent skin. */
.s3-sub-motion {
  --s3-sub-copper: var(--s3-accent, #efad7f);
  --s3-sub-paper: var(--s3-paper, #fff0db);
  --s3-sub-line: var(--s3-line, rgba(239, 173, 127, .25));
  position: absolute;
  display: block;
  pointer-events: none !important;
  user-select: none;
  -webkit-user-select: none;
  color: var(--s3-sub-copper);
  margin: 0;
  padding: 0;
  border: 0;
  box-sizing: border-box;
}
.s3-sub-motion *, .s3-sub-motion *::before, .s3-sub-motion *::after {
  box-sizing: border-box;
  pointer-events: none !important;
}
.s3-sub-motion[hidden] { display: none !important; }
.s3-sub-motion span { display: block; }

/* LEASE: two copper timeline rails at the scene boundary, never on the leaves. */
.s3-sub-motion--lease { inset: 2px 5px 2px; z-index: 12; overflow: clip; }
.s3-sub-timeline { position: absolute; top: 9%; bottom: 12%; width: 2px; background: linear-gradient(transparent, var(--s3-sub-line) 20%, var(--s3-sub-line) 80%, transparent); }
.s3-sub-timeline--start { left: 2px; }
.s3-sub-timeline--end { right: 2px; }
.s3-sub-timeline-light { position: absolute; top: 0; left: 0; width: 2px; height: 19%; border-radius: 2px; background: linear-gradient(transparent, var(--s3-sub-copper) 35%, var(--s3-sub-paper) 52%, transparent); box-shadow: 0 0 9px #efad7f55; }
.s3-sub-timeline-mark { position: absolute; left: -2px; width: 6px; height: 6px; border: 1px solid var(--s3-sub-copper); border-radius: 50%; background: var(--s3-deep, #150e12); }
.s3-sub-timeline-horizon { position: absolute; bottom: 1px; left: 12%; right: 12%; height: 1px; background: linear-gradient(90deg, transparent, var(--s3-sub-copper), transparent); transform-origin: center; }

/* HOMES: a separate perspective stage, sibling of the existing gallery stage. */
.s3-sub-motion--homes { left: 0; top: 0; width: 100%; height: 100%; z-index: 0; overflow: clip; }
.s3-sub-orbit-space { position: absolute; inset: 0; perspective: 900px; transform-style: preserve-3d; }
.s3-sub-orbit-plane { position: absolute; left: 1%; top: 7%; width: 98%; height: 84%; transform-style: preserve-3d; }
.s3-sub-orbit-plane--1 { left: 8%; top: 0; width: 84%; height: 98%; }
.s3-sub-orbit-line, .s3-sub-orbit-sweep { position: absolute; inset: 0; border: 1px solid var(--s3-sub-line); border-radius: 50%; }
.s3-sub-orbit-sweep { border-color: var(--s3-sub-copper) transparent transparent; }
.s3-sub-orbit-pearl { position: absolute; width: 9px; height: 9px; border-radius: 50%; left: calc(50% - 4px); top: -4px; background: var(--s3-sub-paper); box-shadow: 0 0 12px #efad7f99; transform: translateZ(4px); }
.s3-sub-orbit-plane--1 .s3-sub-orbit-pearl { width: 5px; height: 5px; top: -2px; background: var(--s3-sub-copper); }

/* EXAMPLES: a quiet, shallow floor underneath the REAL calculator boundary.
   No selectors address the input, receipt, output, presets or landscape preview. */
.s3-sub-motion--examples { inset: 0; z-index: 2; }
.s3-sub-calc-edge { position: absolute; top: 7%; bottom: 8%; width: 1px; background: linear-gradient(transparent, var(--s3-sub-copper), transparent); }
.s3-sub-calc-edge--start { left: 3px; }
.s3-sub-calc-edge--end { right: 3px; }
.s3-sub-calc-floor { position: absolute; left: 0; right: 0; top: calc(100% - 8px); height: 46px; overflow: clip; background: radial-gradient(ellipse at 50% 15%, #efad7f18, transparent 66%); }
.s3-sub-calc-ring { position: absolute; left: 4%; width: 92%; height: 27px; top: 1px; border: 1px solid var(--s3-sub-line); border-radius: 50%; }
.s3-sub-calc-ring--1 { left: 13%; width: 74%; top: 5px; height: 30px; }
.s3-sub-calc-ring--2 { left: 23%; width: 54%; top: 10px; height: 29px; }
.s3-sub-calc-sweep { position: absolute; inset: -1px; padding: 1px; border-radius: 50%; background: conic-gradient(from var(--s3-sub-angle, 0deg), transparent 60%, var(--s3-sub-copper) 83%, var(--s3-sub-paper) 87%, transparent 93%); mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask-composite: exclude; }

/* FAQ: a fixed, pointer-transparent portal. It cannot change details layout. */
.s3-sub-motion--faq { position: fixed; z-index: 4; overflow: clip; border-radius: 20px; }
.s3-sub-answer-rail { position: absolute; left: 2px; top: 16px; bottom: 16px; width: 2px; overflow: clip; background: var(--s3-sub-line); border-radius: 2px; }
.s3-sub-answer-light { position: absolute; left: 0; top: 0; width: 2px; height: 25%; background: linear-gradient(transparent, var(--s3-sub-copper) 30%, var(--s3-sub-paper) 60%, transparent); }
.s3-sub-answer-corner { position: absolute; left: 2px; top: 2px; width: min(86px, 25%); height: 22px; border-left: 1px solid var(--s3-sub-copper); border-top: 1px solid var(--s3-sub-copper); border-radius: 18px 0 0 0; }

/* WECHAT: behind contact ART, inside that art's isolated stacking context.
   QR and copy controls live in the other column and are never descendants. */
.s3-sub-motion--wechat { inset: 0; z-index: -1; overflow: clip; }
.s3-sub-halo-space { position: absolute; inset: 0; perspective: 850px; transform-style: preserve-3d; }
.s3-sub-halo-tilt { position: absolute; inset: 1% 1% 0; transform-style: preserve-3d; }
.s3-sub-halo-ring, .s3-sub-halo-echo { position: absolute; inset: 0; border: 1px solid var(--s3-sub-line); border-radius: 50%; }
.s3-sub-halo-ring { box-shadow: 0 0 25px #efad7f12, inset 0 0 20px #efad7f12; }
.s3-sub-halo-sweep { position: absolute; inset: -1px; border: 2px solid transparent; border-top-color: var(--s3-sub-copper); border-left-color: var(--s3-sub-line); border-radius: 50%; }
.s3-sub-halo-star { position: absolute; top: -3px; left: calc(50% - 3px); width: 7px; height: 7px; border-radius: 50%; background: var(--s3-sub-paper); box-shadow: 0 0 12px #efad7f99; }
.s3-sub-halo-echo { border-style: dashed; border-color: var(--s3-sub-copper); }

@media (max-width: 760px), (any-pointer: coarse) {
  .s3-sub-orbit-pearl { width: 6px; height: 6px; top: -3px; box-shadow: 0 0 7px #efad7f77; }
  .s3-sub-orbit-plane { left: 1%; width: 98%; top: 1%; height: 98%; }
  .s3-sub-calc-floor { height: 36px; }
  .s3-sub-calc-ring--2 { display: none; }
  .s3-sub-halo-ring { box-shadow: 0 0 14px #efad7f12; }
}
@media (prefers-reduced-motion: reduce), (forced-colors: active), print {
  .s3-sub-motion { display: none !important; }
}