.pcPreview {
    width: min(880px, 100%);
    display: flex;
    flex-direction: column;
    gap: 22px;
  }

  /* ================= 显示器 ================= */
  .stage {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .monitor {
    width: 100%;
    position: relative;
    border-radius: 20px 20px 12px 12px;
    background: linear-gradient(155deg, #fbfcfe 0%, #e2e8f0 20%, #cbd5e1 55%, #aeb9c7 100%);
    box-shadow:
      0 0 0 1px rgba(15, 23, 42, .08),
      0 30px 60px -18px rgba(15, 23, 42, .26),
      0 70px 130px -50px rgba(15, 23, 42, .22),
      inset 0 1px 0 rgba(255, 255, 255, .95);
  }

  /* 屏幕内边（显示器边框区域） */
  .bezel {
    position: relative;
    padding: 26px 16px 14px;
  }

  /* 摄像头 */
  .cam {
    position: absolute;
    top: 9px;
    left: 50%;
    transform: translateX(-50%);
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 32%, #64748b, #0f172a 72%);
    box-shadow: 0 0 0 1px rgba(15, 23, 42, .18), inset 0 0 3px #000;
  }

  /* ================= 屏幕 ================= */
  .screen {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 7px;
    overflow: hidden;
    background: #ffffff;
    display: grid;
    place-items: center;
  }

  .screen img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    transform-origin: center;
    opacity: 0;
    transition: opacity .28s ease;
    user-select: none;
    -webkit-user-drag: none;
  }

  /* 玻璃反光 */
  .glare {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: linear-gradient(115deg,
      rgba(255, 255, 255, .10) 0%,
      rgba(255, 255, 255, .035) 16%,
      transparent 36%,
      transparent 100%);
  }

  /* 屏幕内阴影 / 玻璃边 */
  .screen::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    border-radius: inherit;
    box-shadow:
      inset 0 0 0 1px rgba(255, 255, 255, .08),
      inset 0 0 70px rgba(0, 0, 0, .55);
  }

  /* HUD 信息 */
  .hud {
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 12px;
    z-index: 4;
    display: flex;
    justify-content: space-between;
    gap: 10px;
    pointer-events: none;
    opacity: .88;
    transition: opacity .3s;
  }

  .screen:hover .hud { opacity: 1; }

  .pill {
    background: rgba(255, 255, 255, .84);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(15, 23, 42, .10);
    padding: 4px 11px;
    border-radius: 999px;
    font-size: 11.5px;
    letter-spacing: .05em;
    font-variant-numeric: tabular-nums;
    color: #334155;
    box-shadow: 0 2px 10px -4px rgba(15, 23, 42, .35);
    max-width: 60%;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }

  /* 拖拽 / 空状态提示 */
  .drop-hint {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: grid;
    place-content: center;
    justify-items: center;
    gap: 14px;
    font-size: 13.5px;
    letter-spacing: .08em;
    color: #94a3b8;
    background: rgba(5, 7, 10, .62);
    backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s, color .25s;
  }

  .drop-hint .dh-icon {
    width: 58px;
    height: 58px;
    border-radius: 18px;
    display: grid;
    place-content: center;
    font-size: 26px;
    line-height: 1;
    color: #cbd5e1;
    background: rgba(255, 255, 255, .05);
    border: 1px dashed rgba(255, 255, 255, .28);
    transition: .25s;
  }

  .screen.empty .drop-hint,
  .screen.dragover .drop-hint { opacity: 1; }

  .screen.dragover .drop-hint { color: #7dd3fc; }

  .screen.dragover .drop-hint .dh-icon {
    color: #7dd3fc;
    border-color: rgba(125, 211, 252, .75);
    background: rgba(56, 189, 248, .12);
    box-shadow: 0 0 30px rgba(56, 189, 248, .25);
    transform: scale(1.06);
  }

  /* ================= 下巴 & 支架 ================= */
  .chin {
    position: relative;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .brand {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .42em;
    text-indent: .42em;
    color: rgba(15, 23, 42, .30);
  }

  .led {
    position: absolute;
    right: 26px;
    top: 50%;
    transform: translateY(-50%);
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 9px #22c55e, 0 0 22px rgba(34, 197, 94, .5);
  }

  .neck {
    width: 96px;
    height: 46px;
    margin-top: -1px;
    background: linear-gradient(90deg, #aab4c1, #eef2f7 32%, #c7d0db 68%, #9aa5b3);
    clip-path: polygon(24% 0, 76% 0, 100% 100%, 0 100%);
  }

  .base {
    width: 300px;
    height: 15px;
    margin-top: -3px;
    border-radius: 50% / 62%;
    background: linear-gradient(180deg, #e6ebf2, #c2ccd8 58%, #9dabb9);
    box-shadow:
      0 20px 32px -10px rgba(15, 23, 42, .30),
      inset 0 1px 0 rgba(255, 255, 255, .95);
  }