#scroll-style2-wrap {position: fixed;right: 10px;top: 60%;transform: translateY(-50%);z-index: 9999;opacity: 0; pointer-events: none;transition: opacity 0.3s ease;visibility: hidden;}
.scroll2-btn {width: 30px;height: 30px;line-height: 30px;text-align: center;border-radius: 50%;border: none;font-weight: bold;font-size: 14px;color: #fff;background-color: #f44;cursor: pointer;opacity: 0.4;transition: all 0.3s ease;position: relative;z-index: 2;}
.scroll2-btn.active {opacity: 0.8;}
.top2-btn {width: 30px;height: 30px;text-align: center;border-radius: 50%;border: none;font-weight: bold;font-size: 14px;color: #fff;background-color: #a9a9a9;cursor: pointer;opacity: 0.4;transition: all 0.3s ease;position: absolute;top: 80px; /* 固定在“慢”按钮正下方 */left: 0;z-index: 1;}
.top2-btn.hidden {display: none;}

/*滚动图标大于1024时,文章页外置*/
@media screen and (min-width: 1025px) {
  .article-content {position: relative;}
}