.back-top,.back-top a{transition:.3s;width:39px;height:39px;background-color:transparent}.back-top{position:fixed;right:10px;bottom:90px;border-radius:50%;z-index:9}.back-top a{display:flex;justify-content:center;font-size:0;background-image:url(../images/top-button.png);background-size:39px 39px;background-position:center;background-repeat:no-repeat;border:unset;margin:0;padding:0;border-radius:6px}.back-top a:hover{background-image:url(../images/top-button-hover.png)}.tooltip{display:none}.presentation{position:relative;background:#0e1426;padding:30px 0}.presentation__title{font-family:"Roboto",sans-serif;font-weight:700;font-size:2rem;line-height:2.875rem;text-align:center;margin-bottom:32px;color:#fff}.presentation__tabs{display:flex;justify-content:center;flex-wrap:wrap;gap:20px;margin-bottom:40px}.presentation__tab{background:0 0;border:0;color:#fff;cursor:pointer;transition:color .3s,border-color .3s;border-bottom:2px solid transparent;font-weight:700;font-size:1.125rem;line-height:1.5rem}.presentation__tab.active{color:#0071bb;border-color:#0071bb}.presentation__tab:hover{color:#0071bb}.presentation .presentation-slider__slide img{width:100%;border-radius:16px;height:100%;max-height:641px;object-fit:cover;min-height:320px}.presentation .tns-nav{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:40px}.presentation .tns-nav button{border:1px solid #0071bb;background:#fff;border-radius:50rem;width:14px;height:14px;transition:border .3s,background .3s}.presentation .tns-nav button:hover,.presentation .tns-nav-active{border:1px solid #fff!important;background:#0071bb!important;transition:border .3s,background .3s}.presentation-slider>.presentation-slider__slide:not(.tns-item){display:none}.presentation-slider>.presentation-slider__slide:first-child:not(.tns-item){display:block}@media all and (min-width:35.5rem){.presentation__tab{font-size:1.5rem;line-height:2rem}}@media all and (min-width:48rem){.back-top{bottom:100px;right:20px}.presentation{padding:60px 0}}@media all and (min-width:64rem){.presentation__title{font-size:3rem;line-height:3.5rem}.presentation__tabs{gap:60px}.presentation__tab{font-size:2rem;line-height:2.5rem}.presentation .presentation-slider__slide img{min-height:unset}}