:root{--floating-action-size:46px;--floating-action-edge:24px;--floating-action-gap:8px}a.floating-contact__zalo{position:fixed;right:var(--floating-action-edge);bottom:calc(var(--floating-action-edge) + var(--floating-action-size) + var(--floating-action-gap));z-index:9999;display:inline-flex;align-items:center;justify-content:center;width:var(--floating-action-size);height:var(--floating-action-size);border:1px solid rgba(255,255,255,.24);border-radius:50%!important;background:#07154e;color:#ffffff;font-family:interTight,Inter Tight,Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Arial,sans-serif;font-size:11.5px;font-weight:700;letter-spacing:.02em;text-decoration:none;box-shadow:0 8px 22px rgba(7,21,78,.28);transition:transform .15s ease,box-shadow .15s ease,background-color .15s ease}a.floating-contact__zalo:hover{background:#0b53d4;color:#ffffff;transform:scale(1.04);box-shadow:0 12px 28px rgba(7,21,78,.34)}button.footer__backtotop{right:var(--floating-action-edge)!important;bottom:var(--floating-action-edge)!important;width:var(--floating-action-size)!important;height:var(--floating-action-size)!important}@media (max-width:560px){:root{--floating-action-size:44px;--floating-action-edge:16px}a.floating-contact__zalo{font-size:11px}}@media print{a.floating-contact__zalo{display:none}}