.ad-rail{display:none}.back-to-top{position:fixed;right:22px;bottom:22px;z-index:20;display:flex;align-items:center;gap:7px;padding:10px 13px;border-radius:999px;background:var(--navy);color:#fff;font:700 13px Arial,sans-serif;box-shadow:0 7px 18px rgba(4,25,42,.24);opacity:0;transform:translateY(12px);pointer-events:none;transition:.2s}.back-to-top.visible{opacity:1;transform:none;pointer-events:auto}.back-to-top:hover{background:var(--green-dark)}@media(min-width:768px) and (max-width:1199px){.ad-rail{display:block;position:fixed;top:112px;width:82px;z-index:5}.ad-rail-left{left:4px}.ad-rail-right{right:4px}.ad-rail span{display:block;text-align:center;font:700 7px Arial,sans-serif;letter-spacing:.06em;color:#71808b;margin:0 0 4px}.ad-rail img{display:block;width:82px;height:246px;object-fit:cover;border-radius:7px;box-shadow:0 8px 18px rgba(5,26,42,.18);border:1px solid rgba(255,255,255,.7)}}@media(min-width:1200px){.ad-rail{display:block;position:fixed;top:132px;width:120px;z-index:5}.ad-rail-left{left:max(12px,calc((100vw - 1290px)/2))}.ad-rail-right{right:max(12px,calc((100vw - 1290px)/2))}.ad-rail span{display:block;text-align:center;font:700 9px Arial,sans-serif;letter-spacing:.11em;color:#71808b;margin:0 0 6px}.ad-rail img{display:block;width:120px;height:360px;object-fit:cover;border-radius:9px;box-shadow:0 10px 24px rgba(5,26,42,.18);border:1px solid rgba(255,255,255,.7)}.header-inner,.page-shell{max-width:1020px}}@media(min-width:1650px){.ad-rail{width:156px}.ad-rail-left{left:max(16px,calc((100vw - 1640px)/2))}.ad-rail-right{right:max(16px,calc((100vw - 1640px)/2))}.ad-rail img{width:156px;height:468px}.header-inner,.page-shell{max-width:1320px}}