:root{
  --bg:#f4f5f7;--card:#fff;--ink:#1d2129;--muted:#6b7280;--line:#e6e8ec;
  --brand:#f26722;--brand-dark:#d9530f;--brand-soft:#fff2ea;--sun:#ffc21a;
  --price:#e0281d;--ok:#16924f;--bad:#d42a2a;--blue:#1565d8;
  --dark:#16191f;--r:10px;--shadow:0 1px 3px rgba(17,24,39,.06);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 "Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
img,video{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3{line-height:1.3;margin:0 0 .5em}
.wrap{max-width:1240px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:99}
.ico{width:20px;height:20px;flex:none}

/* ===== top bar ===== */
.topbar{background:var(--dark);color:#c7ccd6;font-size:12.5px}
.topbar .wrap{display:flex;justify-content:space-between;gap:12px;padding-top:7px;padding-bottom:7px}
.topbar b{color:#fff}.topbar a{color:#fff}
.topbar .m{display:none}
@media (max-width:760px){.topbar .r,.topbar .l{display:none}.topbar .m{display:block;margin:0 auto}}

/* ===== header ===== */
.hdr{background:#fff;position:sticky;top:0;z-index:40;box-shadow:0 1px 0 var(--line)}
.hdr .main{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo .mk{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--brand),#ff9a3d);display:grid;place-items:center;color:#fff;font-weight:800;font-size:17px;letter-spacing:-.5px}
.logo .tx{font-weight:800;font-size:21px;letter-spacing:-.4px;line-height:1.1}
.logo .tx span{color:var(--brand)}
.logo small{display:block;font-weight:500;font-size:11.5px;color:var(--muted);letter-spacing:0}
.search{flex:1;display:flex;max-width:560px;border:2px solid var(--brand);border-radius:8px;overflow:hidden;background:#fff}
.search input{flex:1;border:0;padding:10px 14px;font:inherit;outline:0;min-width:0}
.search button{border:0;background:var(--brand);color:#fff;padding:0 18px;display:grid;place-items:center}
.hotline{display:flex;align-items:center;gap:10px;margin-left:auto;flex:none}
.hotline .ic{width:40px;height:40px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center}
.hotline small{display:block;color:var(--muted);font-size:12px}
.hotline b{font-size:16px;color:var(--price)}
.nav{background:var(--brand)}
.nav .wrap{display:flex;align-items:center;gap:6px;height:44px;overflow-x:auto;scrollbar-width:none}
.nav .wrap::-webkit-scrollbar{display:none}
.nav a{color:#fff;font-weight:600;font-size:14px;padding:6px 12px;border-radius:6px;white-space:nowrap}
.nav a:hover,.nav a[aria-current]{background:rgba(255,255,255,.18)}
.nav a.cat{background:var(--sun);color:var(--dark);font-weight:800;text-transform:uppercase;font-size:13px;display:flex;gap:8px;align-items:center}
.nav .usp{margin-left:auto;display:flex;gap:18px;color:#fff;font-size:13px;white-space:nowrap}
@media (max-width:1100px){.nav .usp{display:none}}
@media (max-width:860px){
  .hdr .main{height:auto;flex-wrap:wrap;gap:10px;padding-top:10px;padding-bottom:10px}
  .search{order:3;flex-basis:100%;max-width:none}
  .search input{padding:8px 12px}
  .hotline small{display:none}.hotline b{font-size:14px}.hotline .ic{width:34px;height:34px}
  .logo small{display:none}.logo .tx{font-size:18px}.logo .mk{width:36px;height:36px;font-size:15px}
}

/* ===== chung ===== */
.crumb{font-size:13px;color:var(--muted);padding:12px 0}
.crumb a:hover{color:var(--brand)}
.sec{padding:22px 0}
.sec-h{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.sec-h h2{font-size:21px;margin:0;display:flex;align-items:center;gap:10px}
.sec-h h2::before{content:"";width:5px;height:22px;border-radius:3px;background:var(--brand)}
.sec-h a{color:var(--brand);font-weight:600;font-size:14px}
.panel{background:#fff;border-radius:var(--r);box-shadow:var(--shadow)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:8px;padding:12px 18px;font-weight:700;background:var(--brand);color:#fff;text-align:center}
.btn:hover{background:var(--brand-dark)}
.btn.blue{background:var(--blue)}.btn.blue:hover{filter:brightness(1.1)}
.btn.ghost{background:#fff;color:var(--brand);border:1.5px solid var(--brand)}
.btn.lg{padding:14px 20px;font-size:16px}
.btn small{display:block;font-weight:500;font-size:12px;opacity:.9}
.price{color:var(--price);font-weight:800}

/* ===== hero ===== */
.hero{display:grid;grid-template-columns:2fr 1fr;gap:12px;padding-top:16px}
.hero .big{position:relative;border-radius:14px;overflow:hidden;background:radial-gradient(120% 140% at 85% 30%,#3a2412 0%,#1b1410 45%,#0f0d0c 100%);color:#fff;min-height:340px;display:flex;align-items:center}
.hero .big .t{position:relative;z-index:4;padding:36px;max-width:54%}
.hero .big .kick{display:inline-block;background:var(--sun);color:var(--dark);font-weight:800;font-size:12px;padding:5px 10px;border-radius:99px;letter-spacing:.3px;text-transform:uppercase}
.hero .big h1{font-size:clamp(24px,2.5vw,34px);margin:14px 0 10px;letter-spacing:-.5px}
.hero .big h1 span{color:#ffae6b}
.hero .big p{color:#d6d0ca;margin:0 0 20px}
.hero .big .pics{position:absolute;right:0;top:0;bottom:0;width:46%;display:flex;align-items:center;justify-content:center}
.hero .big .pics img{position:absolute;width:48%;border-radius:16px;box-shadow:0 18px 40px rgba(0,0,0,.45);background:#fff}
.hero .big .pics img:nth-child(1){left:4%;top:18%;transform:rotate(-6deg)}
.hero .big .pics img:nth-child(2){right:4%;top:8%;transform:rotate(5deg);z-index:2}
.hero .big .pics img:nth-child(3){left:28%;bottom:-6%;z-index:3}
.hero .side{display:grid;gap:12px}
.hero .side a{position:relative;border-radius:14px;overflow:hidden;display:block;background:#fff}
.hero .side img{width:100%;height:100%;object-fit:cover;aspect-ratio:2/1}
.hero .side span{position:absolute;left:12px;bottom:12px;background:rgba(0,0,0,.66);color:#fff;font-weight:700;font-size:13px;padding:6px 10px;border-radius:8px}
@media (max-width:900px){
  .hero{grid-template-columns:1fr}
  .hero .big{min-height:0;flex-direction:column;align-items:stretch}
  .hero .big .t{max-width:none;padding:24px 20px 8px}
  .hero .big .pics{position:relative;width:100%;height:240px}
  .hero .big .pics img{width:40%}
  .hero .side{grid-template-columns:1fr 1fr}
  .hero .side span{left:6px;right:6px;bottom:6px;font-size:11.5px;padding:5px 7px}
}

/* ===== USP ===== */
.usps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:12px}
.usps div{background:#fff;border-radius:var(--r);padding:14px;display:flex;gap:12px;align-items:center;box-shadow:var(--shadow)}
.usps i{font-style:normal;width:42px;height:42px;border-radius:50%;background:var(--brand-soft);display:grid;place-items:center;font-size:20px;flex:none}
.usps b{display:block;font-size:14px}.usps small{color:var(--muted);font-size:12.5px}
@media (max-width:900px){.usps{grid-template-columns:1fr 1fr}}

/* ===== danh muc ===== */
.cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.cat-tile{display:flex;align-items:center;gap:14px;background:#fff;border-radius:var(--r);padding:14px;box-shadow:var(--shadow);border:1.5px solid transparent}
.cat-tile:hover{border-color:var(--brand)}
.cat-tile img{width:72px;height:72px;border-radius:10px;object-fit:cover;background:#f6f6f6}
.cat-tile b{display:block}.cat-tile small{color:var(--muted);font-size:13px}

/* ===== luoi san pham ===== */
.grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
@media (max-width:1100px){.grid{grid-template-columns:repeat(4,1fr)}}
@media (max-width:860px){.grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:600px){.grid{grid-template-columns:repeat(2,1fr);gap:8px}}
.pc{background:#fff;border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);border:1px solid transparent;transition:border-color .15s,box-shadow .15s}
.pc:hover{border-color:var(--brand);box-shadow:0 6px 18px rgba(242,103,34,.15)}
.pc .im{position:relative;aspect-ratio:1;background:#fff}
.pc .im img{width:100%;height:100%;object-fit:contain}
.tag{position:absolute;left:8px;top:8px;background:var(--brand);color:#fff;font-size:11px;font-weight:700;padding:3px 7px;border-radius:5px;text-transform:uppercase}
.tag.green{background:var(--ok);left:auto;right:8px}
.pc .b{padding:10px 12px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.pc .brand{font-size:11px;font-weight:700;color:var(--blue);text-transform:uppercase;letter-spacing:.3px}
.pc h3{font-size:14px;font-weight:600;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.6em}
.pc .price{font-size:17px;margin-top:auto}
.pc .sub{font-size:12px;color:var(--ok);font-weight:600}
.pc .go{margin-top:4px;padding:9px;font-size:13.5px}

.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;background:#fff;border-radius:var(--r);padding:10px 14px;margin-bottom:12px;box-shadow:var(--shadow);flex-wrap:wrap}
.toolbar h1{font-size:20px;margin:0}
.toolbar small{color:var(--muted)}
.toolbar select{font:inherit;padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:#fff}
.empty{background:#fff;border-radius:var(--r);padding:30px;text-align:center;color:var(--muted)}

/* ===== trang san pham ===== */
.pd{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr) 290px;gap:16px;align-items:start}
@media (max-width:1100px){.pd{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.pd .policy{grid-column:1/-1}}
@media (max-width:760px){.pd{grid-template-columns:minmax(0,1fr)}}
.gal{padding:12px;position:sticky;top:132px}
@media (max-width:760px){.gal{position:static}}
.slides{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;border-radius:8px;position:relative}
.slides::-webkit-scrollbar{display:none}
.slides img{flex:0 0 100%;scroll-snap-align:start;aspect-ratio:1;object-fit:contain;background:#fff}
.gal .nav-b{position:absolute;top:50%;transform:translateY(-50%);width:36px;height:36px;border-radius:50%;border:0;background:rgba(255,255,255,.92);box-shadow:0 2px 8px rgba(0,0,0,.15);display:grid;place-items:center;z-index:2}
.gal .stage{position:relative}
.gal .prev{left:8px}.gal .next{right:8px}
.thumbs{display:flex;gap:8px;overflow-x:auto;padding-top:10px;scrollbar-width:thin}
.thumbs button{flex:0 0 64px;height:64px;padding:0;border:2px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}
.thumbs button[aria-current=true]{border-color:var(--brand)}
.thumbs img{width:100%;height:100%;object-fit:cover}
.info{padding:18px 20px}
.info h1{font-size:clamp(20px,2.2vw,24px);margin-bottom:8px}
.meta{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:13px;color:var(--muted);padding-bottom:12px;border-bottom:1px dashed var(--line)}
.meta b{color:var(--ink)}.meta .in{color:var(--ok)}
.pbox{background:#f7f7f8;border-radius:8px;padding:12px 14px;margin:14px 0;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.pbox .lb{color:var(--muted);font-size:14px}
.pbox .price{font-size:30px;line-height:1}
.pbox .shp{width:100%;font-size:13px;color:var(--ok);font-weight:600}
.lbl{font-weight:700;font-size:14px;margin:12px 0 8px}
.chips{display:grid;gap:8px}
.chip{display:flex;align-items:center;gap:10px;border:1.5px solid var(--line);border-radius:8px;padding:10px 12px;font-weight:600;font-size:14px;cursor:pointer;background:#fff;position:relative}
.chip:has(input:checked){border-color:var(--brand);background:var(--brand-soft)}
.chip:has(input:checked)::after{content:"✓";position:absolute;right:10px;color:var(--brand);font-weight:800}
.chip input{accent-color:var(--brand);width:17px;height:17px}
.cta{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.cta .btn{flex-direction:column;gap:2px;line-height:1.2;text-transform:uppercase}
.cta .btn small{text-transform:none}
.deal{margin-top:16px;border:1.5px dashed var(--brand);border-radius:10px;overflow:hidden}
.deal h3{margin:0;background:var(--brand-soft);color:var(--brand-dark);font-size:14px;padding:9px 12px;display:flex;gap:8px;align-items:center}
.deal ul{margin:0;padding:10px 12px 10px 30px;font-size:14px;display:grid;gap:4px}
.feat{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}
.feat div{border:1px solid var(--line);border-radius:8px;padding:9px 10px;display:flex;gap:9px}
.feat i{font-style:normal;font-size:18px}
.feat b{display:block;font-size:13.5px}
.feat small{color:var(--muted);font-size:12.5px;line-height:1.35;display:block}
@media (max-width:480px){.feat{grid-template-columns:1fr}}
.policy{padding:16px;position:sticky;top:132px}
@media (max-width:1100px){.policy{position:static}}
.policy h3{font-size:15px;margin:0 0 10px;text-transform:uppercase;color:var(--brand-dark)}
.policy ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.policy li{display:flex;gap:10px;font-size:13.5px;align-items:flex-start}
.policy li i{font-style:normal;width:32px;height:32px;border-radius:50%;background:var(--brand-soft);display:grid;place-items:center;flex:none}
.policy li a{color:var(--blue)}
.policy .call{margin-top:14px;width:100%}

.detail{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:16px;margin-top:16px;align-items:start}
@media (max-width:960px){.detail{grid-template-columns:minmax(0,1fr)}}
.detail .panel{padding:18px 20px}
.detail h2{font-size:17px;text-transform:uppercase;padding-bottom:10px;border-bottom:2px solid var(--line);margin-bottom:12px;position:relative}
.detail h2::after{content:"";position:absolute;left:0;bottom:-2px;width:80px;height:2px;background:var(--brand)}
.detail h3{font-size:16px;margin:16px 0 4px;color:var(--brand-dark)}
.detail p{margin:0 0 8px}
.more{position:relative;max-height:900px;overflow:hidden}
.more.open{max-height:none}
.more:not(.open)::after{content:"";position:absolute;left:0;right:0;bottom:0;height:120px;background:linear-gradient(transparent,#fff)}
.expand{display:flex;margin:12px auto 0}
table.spec{width:100%;border-collapse:collapse;font-size:14px}
table.spec th,table.spec td{text-align:left;padding:9px 10px;vertical-align:top;border-bottom:1px solid var(--line)}
table.spec tr:nth-child(odd){background:#fafafa}
table.spec th{width:40%;color:var(--muted);font-weight:600}
.warn{margin:0;padding-left:18px;font-size:14px;display:grid;gap:6px}
.banners{display:grid;gap:8px;margin-top:12px}
.banners img{border-radius:8px;width:100%;max-width:640px;margin:0 auto}
.vids{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;margin-top:8px}
.vids video{width:100%;aspect-ratio:9/16;object-fit:cover;background:#000;border-radius:8px}
ol.steps{padding-left:20px;margin:0}ol.steps li{margin-bottom:6px}

/* ===== dat hang (dialog) ===== */
dialog.order{border:0;border-radius:14px;padding:0;width:min(480px,calc(100vw - 24px));max-height:calc(100dvh - 24px);box-shadow:0 20px 60px rgba(0,0,0,.3)}
dialog.order::backdrop{background:rgba(15,15,20,.55)}
.order .hd{display:flex;gap:12px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2}
.order .hd img{width:56px;height:56px;border-radius:8px;object-fit:contain;border:1px solid var(--line)}
.order .hd b{display:block;font-size:14.5px;line-height:1.35}
.order .hd .x{margin-left:auto;border:0;background:#f2f2f4;width:34px;height:34px;border-radius:50%;font-size:20px;flex:none}
.order form{padding:14px 16px 18px}
form label.f{display:block;font-weight:600;font-size:14px;margin-bottom:10px}
form input[type=text],form input[type=tel],form textarea{display:block;width:100%;margin-top:5px;font:inherit;padding:11px 12px;border:1.5px solid var(--line);border-radius:8px;background:#fff}
form input:focus,form textarea:focus{outline:2px solid var(--brand);outline-offset:0;border-color:var(--brand)}
form [aria-invalid=true]{border-color:var(--bad)}
.err{display:none;color:var(--bad);font-size:12.5px;font-weight:500}.err.on{display:block}
.total{display:flex;justify-content:space-between;align-items:center;border-top:1px dashed var(--line);padding:12px 0;margin-top:4px;font-weight:600}
.total b{font-size:21px;color:var(--price)}
.msg{display:none;border-radius:8px;padding:12px;margin:10px 0;font-weight:600}
.msg.ok{display:block;background:#e7f6ee;color:var(--ok)}.msg.bad{display:block;background:#fdecec;color:var(--bad)}
.note{font-size:12.5px;color:var(--muted);margin:10px 0 0}
.note a{color:var(--blue)}

/* ===== trang chinh sach ===== */
.doc{background:#fff;border-radius:var(--r);box-shadow:var(--shadow);padding:clamp(18px,4vw,36px);max-width:880px;margin:0 auto 30px}
.doc h1{font-size:clamp(22px,3vw,28px)}
.doc h2{font-size:18px;margin-top:24px;color:var(--brand-dark)}
.doc a{color:var(--blue)}
.doc .upd{color:var(--muted);font-size:13.5px}

/* ===== footer ===== */
.ft-usp{background:#fff;border-top:3px solid var(--brand);margin-top:30px}
.ft-usp .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding-top:18px;padding-bottom:18px}
.ft-usp div{display:flex;gap:10px;align-items:center;font-size:13.5px}
.ft-usp i{font-style:normal;font-size:24px}
.ft-usp b{display:block}
@media (max-width:760px){.ft-usp .wrap{grid-template-columns:1fr 1fr}}
footer.site{background:var(--dark);color:#aab1bf;font-size:14px}
footer.site .wrap{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:28px;padding-top:32px;padding-bottom:20px}
@media (max-width:900px){footer.site .wrap{grid-template-columns:1fr 1fr}}
@media (max-width:560px){footer.site .wrap{grid-template-columns:1fr}}
footer.site h4{color:#fff;margin:0 0 12px;font-size:14px;text-transform:uppercase;letter-spacing:.4px}
footer.site p{margin:0 0 6px}
footer.site a{color:#fff}
footer.site a:hover{color:#ffae6b}
footer.site ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.copy{border-top:1px solid #272c36;text-align:center;padding:14px 16px;font-size:12.5px;color:#7d8596}

/* ===== thanh mua tren dien thoai + nut goi ===== */
.mbar{display:none}
@media (max-width:760px){
  .mbar{display:grid;grid-template-columns:auto 1fr;position:fixed;left:0;right:0;bottom:0;z-index:50;background:#fff;border-top:1px solid var(--line);padding:8px 10px calc(8px + env(safe-area-inset-bottom));gap:8px}
  .mbar .call{display:flex;align-items:center;gap:6px;border:1.5px solid var(--line);border-radius:8px;padding:0 14px;font-weight:700}
  body.has-mbar{padding-bottom:72px}
}
.fab{position:fixed;right:16px;bottom:20px;z-index:45;width:52px;height:52px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;box-shadow:0 6px 18px rgba(242,103,34,.45);animation:ring 2.4s infinite}
@keyframes ring{0%,100%{box-shadow:0 0 0 0 rgba(242,103,34,.45)}50%{box-shadow:0 0 0 12px rgba(242,103,34,0)}}
@media (prefers-reduced-motion:reduce){.fab{animation:none}}
@media (max-width:760px){body.has-mbar .fab{display:none}}