/* Khung trang: đầu trang, mega menu, menu di động, chân trang, nút liên hệ nhanh. Màu theo biến CSS để đổi khi chốt nhận diện thương hiệu. */
:root{--qh-accent:#0b4ea2;--qh-ink:#0f2d52;--qh-muted:#5b6b7f;--qh-line:#e3e8ef;--qh-bg-soft:#f4f7fb;--qh-radius:10px;--qh-sale:#c0141c;--qh-head:#0b4ea2}
.sr-only{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-main{min-height:50vh}
/* Thanh trên cùng */
.topbar{background:var(--qh-ink);color:#d6e2f2;font-size:13px}.topbar a{color:#fff;text-decoration:none}.topbar a:hover{text-decoration:underline}
.topbar__in{display:flex;justify-content:space-between;gap:12px;padding-top:6px;padding-bottom:6px}.topbar__links{display:flex;gap:16px}
/* Hàng chính */
.site-header{position:relative;z-index:50;background:#fff}
.hmain{background:var(--qh-head)}
.hmain__in{display:flex;align-items:center;gap:16px;min-height:68px}
.logo{display:flex;align-items:center;flex:none;color:#fff;font-weight:700;font-size:20px;text-decoration:none}.logo img{height:40px;width:auto;display:block}
.search{position:relative;flex:1;display:flex;max-width:640px}
.search input{flex:1;min-width:0;border:0;border-radius:8px 0 0 8px;padding:11px 14px;font:inherit;font-size:15px}.search input:focus{outline:2px solid #ffd54a;outline-offset:-2px}
.search button{border:0;background:#ffd54a;color:var(--qh-ink);padding:0 16px;border-radius:0 8px 8px 0;cursor:pointer;display:flex;align-items:center}
.suggest{position:absolute;left:0;right:0;top:100%;margin-top:4px;background:#fff;border-radius:10px;box-shadow:0 10px 30px rgba(15,45,82,.25);z-index:60;overflow:hidden;color:var(--qh-ink)}
.suggest[hidden]{display:none}.suggest a{display:flex;gap:10px;align-items:center;padding:8px 12px;color:inherit;text-decoration:none;border-bottom:1px solid var(--qh-line)}.suggest a:hover,.suggest a.is-on{background:var(--qh-bg-soft)}
.suggest img{width:42px;height:42px;object-fit:contain;flex:none}.suggest .t{flex:1;font-size:14px;line-height:1.3}.suggest .p{font-weight:700;color:var(--qh-sale);font-size:14px;white-space:nowrap}
.suggest .h{padding:6px 12px;font-size:12px;text-transform:uppercase;color:var(--qh-muted);background:var(--qh-bg-soft)}.suggest .all{justify-content:center;font-weight:600;color:var(--qh-accent)}
.hline{display:flex;flex-direction:column;color:#fff;text-decoration:none;line-height:1.2;flex:none}.hline small{opacity:.8;font-size:12px}.hline b{font-size:16px}
.hcart{position:relative;color:#fff;display:flex;align-items:center;padding:6px;flex:none}.hcart__n{position:absolute;right:-2px;top:-4px;min-width:18px;height:18px;border-radius:9px;background:#ffd54a;color:var(--qh-ink);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 4px}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer}.burger span{display:block;width:22px;height:2px;background:#fff;margin:5px 0;border-radius:2px}
/* Menu danh mục + mega */
.mainnav{background:#fff;border-bottom:1px solid var(--qh-line)}
.mainnav__in{display:flex;align-items:center;gap:20px;min-height:44px}
.catmenu{position:relative}
.catmenu__btn{display:flex;align-items:center;gap:8px;border:0;background:var(--qh-bg-soft);color:var(--qh-ink);font:inherit;font-weight:700;padding:10px 16px;border-radius:8px;cursor:pointer}.catmenu__btn:hover{background:#e6edf7}
.catmenu__ico{width:18px;height:2px;background:currentColor;position:relative;display:inline-block}.catmenu__ico::before,.catmenu__ico::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}.catmenu__ico::before{top:-5px}.catmenu__ico::after{top:5px}
.catmenu__panel{display:none;position:absolute;left:0;top:100%;z-index:70;width:270px;background:#fff;border:1px solid var(--qh-line);border-radius:0 0 12px 12px;box-shadow:0 14px 34px rgba(15,45,82,.18)}
.catmenu.is-open .catmenu__panel{display:block}
.catmenu__list{list-style:none;margin:0;padding:6px 0}.catmenu__item{position:static}
.catmenu__top{display:flex;align-items:center;gap:10px;padding:9px 16px;color:var(--qh-ink);text-decoration:none;font-size:14px}
.catmenu__top img,.catmenu__noicon{width:24px;height:24px;flex:none;object-fit:contain}.catmenu__top:hover,.catmenu__item:hover>.catmenu__top,.catmenu__item:focus-within>.catmenu__top{background:var(--qh-bg-soft);color:var(--qh-accent)}
.has-mega>.catmenu__top::after{content:"›";margin-left:auto;color:var(--qh-muted)}
.mega{display:none;position:absolute;left:100%;top:0;min-height:100%;width:760px;max-width:calc(100vw - 340px);background:#fff;border:1px solid var(--qh-line);border-left:0;border-radius:0 12px 12px 0;box-shadow:14px 14px 34px rgba(15,45,82,.14);padding:18px 22px;column-count:3;column-gap:26px}
.catmenu__item:hover>.mega,.catmenu__item:focus-within>.mega{display:block}
.mega__col{break-inside:avoid;margin:0 0 16px}.mega__h{display:block;font-weight:700;color:var(--qh-ink);text-decoration:none;margin-bottom:6px;font-size:14px}a.mega__h:hover{color:var(--qh-accent)}
.mega ul{list-style:none;margin:0;padding:0}.mega li a{display:block;padding:3px 0;color:var(--qh-muted);text-decoration:none;font-size:13.5px}.mega li a:hover{color:var(--qh-accent);text-decoration:underline}
.quick{display:flex;gap:6px;list-style:none;margin:0;padding:0;flex-wrap:wrap}.quick a{display:block;padding:10px 12px;color:var(--qh-ink);text-decoration:none;font-size:14px;font-weight:600;border-radius:8px}.quick a:hover{background:var(--qh-bg-soft);color:var(--qh-accent)}
/* Menu di động */
.drawer{position:fixed;left:0;top:0;bottom:0;width:min(86vw,360px);background:#fff;z-index:100;overflow:auto;transform:translateX(-100%);transition:transform .2s}
.drawer.is-open{transform:none}.drawer[hidden]{display:block;visibility:hidden}.drawer.is-open[hidden]{visibility:visible}
.drawer__bar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--qh-head);color:#fff;position:sticky;top:0}.drawer__close{background:none;border:0;color:#fff;font-size:28px;line-height:1;cursor:pointer}
.scrim{position:fixed;inset:0;background:rgba(10,20,40,.5);z-index:90}.scrim[hidden]{display:none}
.dnav{list-style:none;margin:0;padding:0}.dnav>li{border-bottom:1px solid var(--qh-line)}
.dnav__row{display:flex;align-items:center;gap:10px;padding:12px 16px;color:var(--qh-ink);text-decoration:none;cursor:pointer;list-style:none;font-weight:600}.dnav__row::-webkit-details-marker{display:none}
summary.dnav__row::after{content:"+";margin-left:auto;color:var(--qh-muted);font-size:20px}details[open]>summary.dnav__row::after{content:"−"}
.dnav__row img{width:24px;height:24px;object-fit:contain}
.dnav__sub{padding:0 16px 12px 50px;display:flex;flex-direction:column}.dnav__h{font-weight:700;color:var(--qh-ink);text-decoration:none;margin-top:10px;font-size:14px}.dnav__l{padding:5px 0;color:var(--qh-muted);text-decoration:none;font-size:14px}
body.drawer-open{overflow:hidden}
/* Dịch vụ */
.services{background:var(--qh-bg-soft);border-top:1px solid var(--qh-line);margin-top:30px}
.services__in{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;padding-top:18px;padding-bottom:18px}
.service{display:flex;align-items:center;gap:12px;color:var(--qh-ink);text-decoration:none;font-weight:600;font-size:14px}.service img{width:40px;height:40px;object-fit:contain;flex:none}.service:hover{color:var(--qh-accent)}
/* Chân trang */
.site-footer{background:#0f2d52;color:#c9d6e8;margin:0;padding:0;border-top:0;font-size:14px}
.site-footer a{color:#fff;text-decoration:none}.site-footer a:hover{text-decoration:underline}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;padding-top:34px;padding-bottom:26px}
.footer__h{font-size:15px;color:#fff;margin:0 0 10px;text-transform:uppercase;letter-spacing:.02em}
.footer__col p{margin:6px 0}.footer__links{list-style:none;margin:0;padding:0}.footer__links li{margin:7px 0}
.footer__social{display:flex;gap:10px;flex-wrap:wrap}.footer__social a{background:rgba(255,255,255,.1);border-radius:999px;padding:4px 12px;font-size:13px}
.footer__support div{margin:4px 0}.footer__pay{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.footer__pay p{margin:0}.footer__pay img{height:23px;width:auto;background:#fff;border-radius:4px;padding:2px}
.footer__bct{display:flex;gap:10px;margin-top:12px}.footer__bct p{margin:0}.footer__bct img{height:30px;width:auto}
.footer__bottom{border-top:1px solid rgba(255,255,255,.12);padding:14px 0;font-size:13px;color:#9fb2cd}.footer__bottom p{margin:4px 0}
/* Nút liên hệ nhanh */
.fab{position:fixed;right:14px;bottom:18px;z-index:40;display:flex;flex-direction:column;gap:10px}
.fab__a{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff!important;font-size:12px;font-weight:700;text-decoration:none!important;box-shadow:0 4px 14px rgba(0,0,0,.25)}
.fab__tel{background:#16a34a}.fab__zalo{background:#0068ff}.fab__msg{background:#a334fa}
/* 404 */
.notfound{padding:60px 0;text-align:center}.notfound__form{display:flex;gap:8px;justify-content:center;margin:18px 0}.notfound__form input{padding:11px 14px;border:1px solid var(--qh-line);border-radius:8px;min-width:260px;font:inherit}
@media (max-width:1000px){.footer__grid{grid-template-columns:1fr 1fr}.mainnav{display:none}.hline{display:none}}
@media (max-width:860px){.burger{display:block}.hmain__in{flex-wrap:wrap;gap:8px 10px;padding-top:8px;padding-bottom:8px}.logo{order:1}.hcart{order:2;margin-left:auto}.burger{order:0}.search{order:3;flex:1 0 100%;max-width:none}.topbar__links{display:none}.topbar__in{justify-content:center}}
@media (max-width:560px){.footer__grid{grid-template-columns:1fr;gap:18px}.topbar{font-size:12px}.topbar__hot a:nth-of-type(n+2){display:none}.topbar__hot span:nth-of-type(n){display:none}}
@media (prefers-reduced-motion:reduce){.drawer{transition:none}}