.spot {
    position: absolute;
    left: 0; top: 0;                 /* 位置全部由 transform 决定，避免每帧改布局属性 */
    will-change: transform, opacity;
    transform-origin: 50% 50%;
    display: flex; flex-direction: column; align-items: center; gap: 1px;
    min-width: 44px; min-height: 44px;   /* 触摸目标 ≥ 44px */
    border: 0; background: none;
    color: rgba(88,52,32,.86);
    font-size: 10px; line-height: 1.2;
    white-space: nowrap;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }
  .spot:not(.art-spot){ padding: 3px 2px; }
  .spot-art {
    position: relative;
    display: block;
    transform-origin: 50% 100%;      /* 底边不动：抖动 / 缩放都从脚底往上长 */
    transition: transform .12s ease-out;
  }
  .spot:not(.art-spot) .spot-art{ width: 38px; height: 38px; }
  .spot:active .spot-art { transform: scale(.92); }
  .deco {
    position: absolute;
    left: 0; top: 0;
    width: 14px; height: 8px;
    border-radius: 50%;
    background: #E6D2B6;
    pointer-events: none;
    will-change: transform, opacity;
  }
  .deco.d1 { width: 6px; height: 15px; border-radius: 3px; background: #D9BE9C; }
  .deco.d2 { width: 8px; height: 8px; background: #ECDCC4; }
  .spot svg {
    position: relative; z-index: 1;   /* 压在压痕与光斑之上 */
    display: block;
    width: 38px; height: 38px;
    filter: drop-shadow(0 0 1px #FFFCF4) drop-shadow(0 0 3px rgba(255,252,244,.9))
            drop-shadow(0 2px 3px rgba(110,72,40,.35));
    transform-origin: 50% 100%;
    animation: spotIdle 3.2s ease-in-out infinite;
    animation-delay: var(--spot-phase, 0s);   /* 每件景物错峰，避免同拍 */
    transition: opacity .18s, filter .18s;
    will-change: transform;
  }
  .spot .fg {
    fill: #CE9760;
    stroke: #6B4326;
    stroke-width: 1.4;
    stroke-linejoin: round;
  }
  .spot .ln {
    fill: none;
    stroke: #6B4326;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
  }
  .spot-art::before {
    content: "";
    position: absolute; left: 50%; bottom: -4px;
    width: 34px; height: 9px; margin-left: -17px;
    border-radius: 50%;
    background: rgba(134,88,50,.24);
    box-shadow: inset 0 1.5px 2px rgba(110,72,40,.3);
    pointer-events: none;
  }
  .spot-art::after {
    content: "";
    position: absolute; left: 50%; bottom: -9px;
    width: 52px; height: 18px; margin-left: -26px;
    border-radius: 50%;
    background: radial-gradient(ellipse at center, rgba(255,255,255,.9), rgba(255,255,255,0) 70%);
    animation: spotGlow 2.6s ease-in-out infinite;
    pointer-events: none;
  }
  .spot .name {
    transform: rotate(calc(var(--rel, 0deg) * -1));
    text-shadow: 0 1px 0 rgba(255,248,236,.9);
    pointer-events: none;
  }
  @keyframes spotIdle {
    0%, 100% {
      transform: rotate(var(--spot-radial, 0deg)) scaleY(1)
                 rotate(calc(-1 * var(--spot-radial, 0deg)));
    }
    50% {
      transform: rotate(var(--spot-radial, 0deg)) scaleY(var(--spot-idle, .8))
                 rotate(calc(-1 * var(--spot-radial, 0deg)));
    }
  }
  @keyframes spotGlow {
    0%, 100% { opacity: .5; }
    50% { opacity: 1; }
  }
  .spot.worn svg { filter: brightness(.9); }
  .spot.worn .spot-art::after { filter: opacity(.45); }
  .spot.barren .spot-art::after { display: none; }
  .spot.rare svg {
    filter: drop-shadow(0 0 2px rgba(255,214,102,.95)) drop-shadow(0 0 9px rgba(255,186,58,.8))
            drop-shadow(0 2px 3px rgba(110,72,40,.35));
    animation-duration: 2.4s;
  }
  .spot.rare .spot-art::after {
    width: 58px; height: 20px; margin-left: -29px; bottom: -10px;
    background: radial-gradient(ellipse at center, rgba(255,214,102,.95), rgba(255,186,58,0) 72%);
    animation-duration: 1.9s;
  }
  /* 点过的景物：只做半透明，不再变深色 / 去饱和 */
  .spot.dug { opacity: .5; }
  .spot.dug .spot-art::after { display: none; }
  .spot.dug .spot-art::before { display: none; }

  .spot.art-spot { padding: 0; gap: 0; color: transparent; }
  .spot.art-spot .name { display: none; }
  .spot.art-spot .spot-art {
    width: calc(var(--disc-d, 428px) * var(--spot-w, .2));
    aspect-ratio: var(--spot-ar, 1);
    height: auto;
    transform-origin: var(--spot-origin, 50% 100%);
  }
  .spot.art-spot img {
    position: relative; z-index: 1;
    display: block; width: 100%; height: 100%;
    object-fit: contain;
    filter: none;
    transform-origin: var(--spot-origin, 50% 100%);
    animation: spotIdle 3.2s ease-in-out infinite;
    animation-delay: var(--spot-phase, 0s);   /* 每件景物错峰 */
    transition: opacity .18s, filter .18s;
    will-change: transform;
  }
  .spot.art-spot:active .spot-art {
    transform-origin: var(--spot-origin, 50% 100%);
    transform: rotate(var(--spot-radial, 0deg)) scaleY(.94) rotate(calc(-1 * var(--spot-radial, 0deg)));
  }
  .spot.art-spot .spot-art::before,
  .spot.art-spot .spot-art::after { display: none; }
  .spot.art-spot.dug img {
    filter: none;
  }
  .spot.tapped .spot-art img,
  .spot.tapped .spot-art svg {
    filter: brightness(1.22) saturate(1.12);
  }
  @media (prefers-reduced-motion: reduce) {
    .spot svg,
    .spot.art-spot img { animation: none; }
    .spot.art-spot:active .spot-art { animation: none; transform: none; }
    .spot-art::after { animation: none; opacity: .8; }
  }