.bookmark_nav{background:#f5f5f5;padding-top:20px;position:relative;width:100%;z-index:10}.bookmark_nav.is-sticky{border-bottom:1px solid #e6e6e6;left:0;position:fixed;right:0;top:0;z-index:10}.bookmark_nav_wrapper{height:auto;width:100%}.bookmark_wrapper{align-items:stretch;display:flex;flex-wrap:wrap;justify-content:space-between}.bookmark_item{color:#666;flex:1;overflow:hidden;padding:clamp(15px,1.5vw,25px) clamp(6px,1vw,14px);position:relative;text-align:center;text-decoration:none;transition:color .35s ease}.bookmark_item span{display:block;font-size:clamp(14px,1vw,18px);line-height:1;transition:transform .35s ease,color .35s ease}.bookmark_item:before{background:#d5d5d5;z-index:1}.bookmark_item:after,.bookmark_item:before{content:"";height:3px;left:clamp(10px,1.3vw,20px);position:absolute;right:clamp(10px,1.3vw,20px);top:0}.bookmark_item:after{background:#ff9f1a;transform:scaleX(0);transform-origin:left;transition:transform .5s linear;z-index:2}.bookmark_item.active:after,.bookmark_item:hover:after{transform:scaleX(1)}.bookmark_item.active{color:#ff9800}.bookmark_item.active span{font-weight:600;transform:translateY(-2px)}.bookmark_item:hover{color:#ff9800}.bookmark_item:hover span{transform:translateY(-2px)}@media (max-width:991px){.bookmark_wrapper{justify-content:center}.bookmark_wrapper::-webkit-scrollbar{display:none}.bookmark_nav{padding:20px 0}.bookmark_item:after,.bookmark_item:before{display:none}.bookmark_item{flex:none;padding:6px 8px}.bookmark_item span{font-size:16px}}@media screen and (767px<= width <=951px){.bookmark_nav .page-center{max-width:780px}}@media (max-width:767px){.bookmark_item span{font-size:15px}}