.th-contact{position:fixed;left:14px;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:90;display:flex;flex-direction:column;gap:10px}.th-contact a{position:relative;display:grid;place-items:center;width:50px;height:50px;border:2px solid white;border-radius:50%;background:#fff;box-shadow:0 3px 14px #182b4933;text-decoration:none}.th-contact img{width:100%;height:100%;border-radius:50%;object-fit:cover}.th-contact .th-zalo{background:#0068ff;color:white;font:700 12px Arial,sans-serif;animation:th-contact-pulse 2.5s ease-out infinite}.th-contact span{position:absolute;left:62px;white-space:nowrap;padding:8px 12px;border-radius:9px;background:#172438;color:white;font:500 13px Arial,sans-serif;opacity:0;visibility:hidden;transition:opacity .2s;pointer-events:none}.th-contact a:hover span,.th-contact a:focus-visible span{opacity:1;visibility:visible}.th-contact a:focus-visible{outline:3px solid #ff991f;outline-offset:4px}@keyframes th-contact-pulse{0%{box-shadow:0 0 0 0 #0068ff55}100%{box-shadow:0 0 0 13px #0068ff00}}@media(max-width:760px){.th-contact{left:8px;bottom:calc(12px + env(safe-area-inset-bottom,0px));gap:8px}.th-contact a{width:42px;height:42px}.th-contact span{left:50px}}@media(prefers-reduced-motion:reduce){.th-contact .th-zalo{animation:none}}