.qc{text-align:center;display:block}.qc ins.adsbygoogle,.qc ins.adsbygoogle iframe{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;background:0 0!important}.qc-ngang{position:relative}.qc-ngang.qc-dang-tai{overflow:hidden}.qc-ngang.qc-dang-tai ins.adsbygoogle{position:absolute;top:1.2rem;left:0;right:0}.qc-dang-tai:after,.qc-dang-tai:before{content:"";pointer-events:none;position:absolute}.qc-ngang.qc-dang-tai:after{box-sizing:border-box;height:100px;display:block;position:static}.qc-dang-tai:after{background:linear-gradient(100deg,#0000 35%,#80808024 50%,#0000 65%) 0 0/250% 100% no-repeat;border:1px solid #80808038;border-radius:12px;animation:1.6s ease-in-out infinite qc-quet;top:1.2rem;bottom:0;left:0;right:0}.qc-dang-tai:before{background:#80808073;width:36px;height:36px;margin:-18px 0 0 -18px;animation:1.6s ease-in-out infinite qc-nhip;top:calc(50% + .6rem);left:50%;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='4' width='18' height='16' rx='2.5'/%3E%3Ccircle cx='9' cy='9.5' r='1.8'/%3E%3Cpath d='M21 16l-5-5-9 9'/%3E%3C/svg%3E") 50%/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='4' width='18' height='16' rx='2.5'/%3E%3Ccircle cx='9' cy='9.5' r='1.8'/%3E%3Cpath d='M21 16l-5-5-9 9'/%3E%3C/svg%3E") 50%/contain no-repeat}@keyframes qc-quet{0%{background-position:100% 0}to{background-position:0 0}}@keyframes qc-nhip{50%{opacity:.45}}@media (prefers-reduced-motion:reduce){.qc-dang-tai:after,.qc-dang-tai:before{animation:none}}.qc-nhan{letter-spacing:.04em;text-transform:uppercase;color:var(--phu);margin-bottom:.2rem;font-size:.7rem;display:block}.qc-ngang{min-height:100px;margin:2rem 0 1rem}.qc-doc{z-index:1;width:300px;display:none;position:fixed;top:8rem;left:calc(50% + 24.5rem)}@media (min-width:1400px) and (min-height:760px){.qc-doc{display:block}}.qc-nha{display:none}.qc:has(ins[data-ad-status=unfilled]) ins.adsbygoogle{display:none!important}.qc.qc-du-phong:not(:has(ins[data-ad-status=filled])) ins.adsbygoogle{display:none!important}.qc:has(ins[data-ad-status=unfilled]) .qc-nha{display:flex}.qc.qc-du-phong:not(:has(ins[data-ad-status=filled])) .qc-nha{display:flex}.qc-nha{--bg-nen:#0f172a;--bg-vien:#1e293b;--bg-chu:#f1f5f9;--bg-phu:#94a3b8;--bg-sky:#38bdf8;--bg-indigo:#6366f1;box-sizing:border-box;text-align:left;color:var(--bg-chu);border:1px solid var(--bg-vien);background:radial-gradient(circle at 1px 1px, #94a3b821 1px, transparent 0) 0 0 / 16px 16px, radial-gradient(120% 140% at 100% 0%, #6366f159, transparent 55%), radial-gradient(90% 120% at 0% 100%, #38bdf82e, transparent 60%), var(--bg-nen);border-radius:14px;text-decoration:none;transition:border-color .2s,transform .2s;position:relative;overflow:hidden}.qc-nha:hover{border-color:#38bdf88c}.qc-nha .bg-logo{color:var(--bg-chu);flex:none}.qc-nha .bg-chu{letter-spacing:-.01em;color:var(--bg-chu);font-weight:700}.qc-nha .bg-chu span{color:var(--bg-sky);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;font-weight:500}.qc-nha .bg-tieu-de{color:var(--bg-chu);line-height:1.25}.qc-nha .bg-mo-ta{color:var(--bg-phu);line-height:1.4}.qc-nha .bg-nut{white-space:nowrap;color:#0b1120;background:linear-gradient(135deg, var(--bg-sky), #818cf8);border-radius:999px;flex:none;padding:.55rem 1rem;font-size:.9rem;font-weight:600;display:inline-block;box-shadow:0 4px 18px #38bdf84d}.qc-nha:hover .bg-nut{filter:brightness(1.08)}.bg-ngang{align-items:center;gap:1rem;min-height:100px;padding:1rem 1.25rem}.bg-ngang .bg-logo{width:52px;height:52px}.bg-ngang .bg-giua{flex-direction:column;flex:1;gap:.2rem;min-width:0;display:flex}.bg-ngang .bg-tieu-de{font-size:1.1rem}.bg-ngang .bg-mo-ta{font-size:.88rem}.bg-ngang .bg-chu{opacity:.85;font-size:.8rem}@media (max-width:520px){.bg-ngang{flex-wrap:wrap;gap:.75rem}.bg-ngang .bg-logo{align-self:flex-start;width:40px;height:40px}.bg-ngang .bg-giua{flex-basis:calc(100% - 40px - .75rem)}.bg-ngang .bg-nut{margin-left:calc(40px + .75rem)}}.bg-doc{flex-direction:column;gap:1.1rem;width:300px;height:600px;padding:1.5rem 1.4rem}.bg-doc .bg-hieu{align-items:center;gap:.55rem;display:flex}.bg-doc .bg-logo{width:34px;height:34px}.bg-doc .bg-hieu .bg-chu{font-size:1.25rem}.bg-doc .bg-tieu-de{letter-spacing:-.02em;font-size:1.6rem}.bg-doc .bg-mo-ta{margin-top:-.4rem;font-size:.95rem}.bg-doc .bg-chat{margin:auto 0}.bg-doc .bg-nut{text-align:center;align-self:stretch;padding:.75rem 1rem;font-size:1rem}.bg-chat{border:1px solid var(--bg-vien);background:#02061799;border-radius:12px;flex-direction:column;gap:.5rem;padding:.75rem;display:flex;box-shadow:0 10px 30px #00000059}.bg-chat i{font-style:normal;display:block}.bg-chat-dau{border-bottom:1px solid var(--bg-vien);align-items:center;gap:.5rem;padding-bottom:.5rem;display:flex}.bg-mat{background:linear-gradient(135deg, var(--bg-sky), var(--bg-indigo));border-radius:50%;width:22px;height:22px}.bg-xanh{background:#34d399;border-radius:50%;width:8px;height:8px;margin-left:auto;box-shadow:0 0 0 3px #34d39933}.bg-thanh{opacity:.55;background:currentColor;border-radius:4px;max-width:100%;height:7px}.bg-tin{border-radius:12px;flex-direction:column;gap:.35rem;max-width:80%;padding:.55rem .7rem;display:flex}.bg-tin-khach{color:#e0f2fe;background:linear-gradient(135deg,#0284c7,#4f46e5);border-bottom-right-radius:4px;align-self:flex-end}.bg-tin-may{background:var(--bg-vien);color:var(--bg-phu);border-bottom-left-radius:4px;align-self:flex-start}.bg-dang-go{flex-direction:row;gap:.3rem;padding:.65rem .8rem}.bg-dang-go i{background:var(--bg-phu);border-radius:50%;width:6px;height:6px;animation:1.2s ease-in-out infinite bg-go}.bg-dang-go i:nth-child(2){animation-delay:.15s}.bg-dang-go i:nth-child(3){animation-delay:.3s}@keyframes bg-go{0%,60%,to{opacity:.4;transform:none}30%{opacity:1;transform:translateY(-4px)}}@media (prefers-reduced-motion:reduce){.bg-dang-go i{animation:none}}