/* 移动端适配 */
@media screen and (max-width: 768px) {
  .content {
    padding: 10px 15px;
  }

  .search-container {
    padding: 0;
    margin: 15px auto;
  }

  .sheets-container {
    padding: 0;
    margin: 15px auto;
  }

  #keyword {
    font-size: 15px;
  }

  .search-btn {
    padding: 10px 16px;
  }

  .sheet-item {
    padding: 12px;
  }

  .badge {
    padding: 1px 6px;
    font-size: 11px;
  }

  .float-back-btn {
    width: 40px;
    height: 40px;
    right: 15px;
    bottom: 15px;
  }

  .float-back-btn i {
    font-size: 20px;
  }
}

/* 超小屏幕适配 */
@media screen and (max-width: 320px) {
  .content {
    padding: 5px;
  }

  .sheet-item {
    padding: 10px;
  }

  .badge {
    padding: 1px 4px;
    font-size: 10px;
  }
}