/* ============================================================
   动作演示层 ANIM.open —— 全屏要点放大
   ============================================================ */
.anim-layer{
  position:fixed;inset:0;z-index:1400;display:flex;align-items:flex-end;justify-content:center;
  background:rgba(4,5,7,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  opacity:0;transition:opacity .22s ease;
}
.anim-layer.is-in{opacity:1}
body.anim-locked{overflow:hidden}
.anim-sheet{
  position:relative;width:100%;max-width:520px;max-height:94vh;overflow:auto;
  padding:22px 20px calc(22px + env(safe-area-inset-bottom));
  border-radius:26px 26px 0 0;
  background:linear-gradient(180deg,#16181D 0%,#0D0F12 58%,#0A0B0E 100%);
  border:1px solid rgba(255,255,255,.10);border-bottom:0;
  box-shadow:0 -24px 60px -20px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.06);
  transform:translateY(14px);transition:transform .26s cubic-bezier(.2,.9,.2,1);
}
.anim-layer.is-in .anim-sheet{transform:translateY(0)}
.anim-close{
  position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);
  color:#C9CED6;font-size:14px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.anim-top{font-size:9.5px;letter-spacing:.2em;color:var(--fire)}
.anim-title{font-size:23px;font-weight:900;letter-spacing:-.02em;margin-top:7px;line-height:1.2}
.anim-title small{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--dim);font-weight:500;margin-top:5px}
.anim-stage{
  position:relative;margin:14px -4px 0;height:min(38vh,300px);border-radius:18px;
  background:radial-gradient(circle at 50% 42%,rgba(255,74,36,.16),rgba(255,255,255,.02) 62%,transparent 78%);
  border:1px solid rgba(255,255,255,.06);overflow:hidden;cursor:pointer;
}
.anim-host{position:absolute;inset:0;display:flex;align-items:flex-end;justify-content:center}
.anim-host .anim-svg{width:100%;height:100%;display:block}
.anim-pause{
  position:absolute;right:11px;bottom:9px;font-size:9px;letter-spacing:.16em;color:rgba(255,255,255,.42);
  padding:3px 7px;border-radius:6px;border:1px solid rgba(255,255,255,.12);background:rgba(0,0,0,.35);
}
.anim-layer.is-paused .anim-host{opacity:.55}
.anim-bar{height:2px;border-radius:2px;background:rgba(255,255,255,.10);margin-top:12px;overflow:hidden}
.anim-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#FF8A3C,#FF4A24);transition:width .08s linear}
.anim-facts{margin-top:14px;display:flex;flex-direction:column;gap:9px}
.anim-fact{display:flex;gap:10px;font-size:13px;line-height:1.7}
.anim-fact b{
  flex:none;width:34px;padding-top:2px;font-size:10.5px;letter-spacing:.08em;color:var(--dim);font-weight:800;
}
.anim-fact span{color:#DDE1E6}
.anim-fact.fire b{color:var(--fire)}
.anim-fact.fire span{color:#FFD9CC}
.anim-tips{
  margin:14px 0 0;padding:12px 14px 12px 30px;list-style:disc;border-radius:13px;
  border:1px solid rgba(255,74,36,.20);background:linear-gradient(150deg,rgba(255,74,36,.10),rgba(255,255,255,.015) 70%);
  color:#C9CED6;font-size:12.5px;line-height:1.8;
}
.anim-tips li{margin:4px 0}
.anim-foot{margin-top:13px;font-size:10px;letter-spacing:.14em;color:var(--dim)}

/* 目标肌群高亮（与人体图同一套 primary 配色） */
.anim-svg .limb.lit{stroke:url(#animFire)}
.anim-svg .joint.lit{fill:#FF7A33}
/* 小标题与拖拽提示 */
.anim-tips-h{font-size:11px;font-weight:800;letter-spacing:.06em;color:var(--dim, #8C939C);margin:14px 0 2px}
.anim-hint{margin-top:10px;text-align:center;font-size:9.5px;letter-spacing:.14em;color:#6E747C}
/* 减少动态：静态定格 */
@media (prefers-reduced-motion: reduce){
  .anim-sheet{transition:none}
  .anim-pause{display:none}
}