fieldset:has(.emoji-item) {
  margin: 1.125rem 0 !important;
  padding: 1.25rem !important;
  border: 1px solid #cacaca !important;
  box-sizing: border-box !important;
  font-family: inherit !important;
  font-size: unset !important;
}

fieldset:has(.emoji-item) > legend {
  font-size: 18px !important;
  border: none !important;
  padding: 0 0.5rem !important;
  margin-bottom: 0 !important;
  float: none !important;
  width: auto !important;
}

fieldset:has(.emoji-item) > ul {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
  display: grid !important;
  grid-template-columns: repeat(auto-fill, minmax(5rem, 1fr));
  gap: 0.6rem !important;
}

/* 展开详情模式：格子加宽，仍铺满整行 */
fieldset:has(.emoji-item.expanded) > ul {
  grid-template-columns: repeat(auto-fill, minmax(7.2rem, 1fr));
}

fieldset .emoji-item {
  --emoji-icon-size: 2.5rem;
  --item-width: 5rem;
  --item-height: 5rem;
  
  border: solid 1px #eaeaea !important;
  display: block !important;
  margin: 0 !important;
  width: 100% !important;
  height: var(--item-height) !important;
  text-align: center !important;
  cursor: pointer !important;
  overflow: hidden !important;
  font-size: 1.2rem !important;
  white-space: nowrap !important;
  text-overflow: ellipsis !important;
  padding: 0 !important;
  box-sizing: border-box !important;
  line-height: normal !important;
  float: none !important;
}

fieldset .emoji-item > span {
  display: block !important;
  font-size: var(--emoji-icon-size) !important;
  height: var(--item-height) !important;
  line-height: var(--item-height) !important;
  margin: 0 !important;
  width: 100% !important;
}

fieldset .emoji-item > span.active {
  background-color: #e6f7ff !important;
  border-radius: 4px !important;
}

fieldset .emoji-item.expanded {
  --item-height: auto !important;
  white-space: normal !important;
  text-overflow: unset !important;
  padding: 0.5rem 0 !important;
  font-size: 1rem !important;
}

fieldset .emoji-item.expanded > span {
  height: var(--emoji-icon-size) !important;
  line-height: var(--emoji-icon-size) !important;
  margin-bottom: 0.3rem !important;
}

@media (max-width: 768px) {
  fieldset:has(.emoji-item) > ul {
    grid-template-columns: repeat(auto-fill, minmax(4rem, 1fr));
    gap: 0.4rem !important;
  }
  
  fieldset:has(.emoji-item.expanded) > ul {
    grid-template-columns: repeat(auto-fill, minmax(6rem, 1fr));
  }
  
  fieldset .emoji-item {
    --emoji-icon-size: 2rem;
    --item-width: 4rem;
    --item-height: 4rem;
  }
  
  fieldset .emoji-item.expanded {
    font-size: 0.9rem !important;
  }
}
/* 暗黑模式适配 */
.night fieldset:has(.emoji-item) { border-color: #555; background: #2a2a2a; }
.night .alert-info { background: #1e3a5f; color: #ddd; border-color: #3a5a7f; }
.night .emoji-item { background: #333; color: #ddd; }
.night .card-preview { background: #2a2a2a; }
/* 返回顶部组件：修复三角号/百分比受本页字体行高影响移位（作用域仅 #backtoTop，不影响主体） */
#backtoTop { line-height: 48px; }
#backtoTop .per {
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 48px !important;
}
#backtoTop .per:before {
    display: block;
    line-height: 48px;
    text-align: center;
}
#backtoTop .per:hover:before {
    content: "▲";
    font-size: 20px;
    line-height: 48px;
    display: block;
    text-align: center;
}