:root{--red:#e2001a;--red2:#b80015;--ink:#1b1b1d;--ink2:#3a3a3e;--mut:#6b6b72;--line:#e7e7ea;--bg:#f6f6f7;--w:1240px;--r:14px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:#fff;font-size:15.5px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}a{color:var(--red);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.3;margin:0 0 .6em;font-weight:700}
.wrap{max-width:var(--w);margin:0 auto;padding:0 16px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 18px;border-radius:999px;font-weight:600;font-size:14.5px;border:2px solid transparent;transition:.2s;cursor:pointer;text-decoration:none!important;white-space:nowrap}
.btn-lg{padding:13px 24px;font-size:15.5px}
.btn-red{background:var(--red);color:#fff}.btn-red:hover{background:var(--red2)}
.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{background:#000}
.btn-ghost{border-color:currentColor;color:inherit;background:transparent}
/* header */
.topbar{background:var(--ink);color:#d8d8dc;font-size:13px}.topbar .wrap{display:flex;justify-content:space-between;gap:12px;padding-top:7px;padding-bottom:7px}
.topbar a{color:#fff;margin-left:18px}.topbar b{color:#fff}
.hd{background:#fff;position:sticky;top:0;z-index:50;box-shadow:0 1px 0 var(--line)}
.hd-in{display:flex;align-items:center;gap:22px;padding-top:12px;padding-bottom:12px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none!important;flex:none}
.lg-a{background:var(--red);color:#fff;font-weight:800;letter-spacing:.14em;padding:9px 14px;font-size:21px;border-radius:8px;line-height:1.2}
.lg-x{width:1px;height:38px;background:var(--line)}.lg-bx{height:46px;width:auto}
.lg-b{border:2px solid var(--red);border-left:0;color:var(--red);font-weight:700;padding:6px 10px;font-size:13px;letter-spacing:.08em;display:flex;align-items:center;border-radius:0 8px 8px 0}
.logo-w{background:#fff;border-radius:12px;padding:10px 14px;display:inline-flex}
.srch{flex:1;position:relative;display:flex;max-width:560px}
.srch input{flex:1;border:1.5px solid var(--line);background:var(--bg);border-radius:999px 0 0 999px;padding:11px 18px;font:inherit;font-size:14.5px;outline:0;min-width:0}
.srch input:focus{border-color:var(--red);background:#fff}
.srch button{border:0;background:var(--red);color:#fff;border-radius:0 999px 999px 0;padding:0 20px;font-size:20px;cursor:pointer}
.sg{position:absolute;left:0;right:0;top:calc(100% + 6px);background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.12);display:none;max-height:420px;overflow:auto;z-index:60}
.sg.on{display:block}.sg a{display:flex;gap:10px;align-items:center;padding:8px 12px;color:var(--ink);border-bottom:1px solid var(--line)}
.sg a:hover{background:var(--bg);text-decoration:none}.sg img{width:46px;height:46px;object-fit:contain;flex:none}.sg b{display:block;font-size:13.5px;font-weight:600}.sg small{color:var(--red);font-weight:600}
.hd-call{display:flex;flex-direction:column;color:var(--ink);line-height:1.2;text-decoration:none!important;border-left:1px solid var(--line);padding-left:18px}
.hd-call small{color:var(--mut);font-size:12px}.hd-call b{color:var(--red);font-size:19px}
.burger{display:none;background:0;border:0;padding:6px;cursor:pointer}.burger i{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0}
.nav{border-top:1px solid var(--line)}.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.nav a{display:block;padding:11px 14px;color:var(--ink2);font-weight:600;font-size:14.5px;white-space:nowrap;border-bottom:2px solid transparent}
.nav a:hover,.nav a.on{color:var(--red);border-bottom-color:var(--red);text-decoration:none}
/* breadcrumb */
.bc{font-size:13.5px;color:var(--mut);padding-top:14px;padding-bottom:6px}.bc a{color:var(--mut)}
/* hero */
.hero{position:relative;color:#fff;background:#111;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.55}
.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.82) 0%,rgba(0,0,0,.45) 60%,rgba(0,0,0,.1))}
.hero-in{position:relative;z-index:1;padding-top:90px;padding-bottom:90px;max-width:var(--w)}
.hero h1{font-size:clamp(30px,4.6vw,52px);max-width:720px;font-weight:800}
.eyebrow{display:inline-block;background:var(--red);padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;margin:0 0 18px}
.lead{font-size:18px;max-width:640px;color:#e9e9ec}.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.sec-t{font-size:clamp(22px,2.6vw,30px);text-align:center;margin:48px 0 24px}
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tile{background:var(--bg);border-radius:var(--r);padding:18px;text-align:center;color:var(--ink);transition:.2s;text-decoration:none!important}
.tile:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(0,0,0,.08)}
.tile img{aspect-ratio:1;object-fit:contain;margin:0 auto 10px;max-height:150px;mix-blend-mode:multiply}
.tile span{display:block;font-weight:700;font-size:16px}.tile small{color:var(--mut)}
.hsec{margin-top:52px}.hsec-h{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;border-bottom:2px solid var(--ink);padding-bottom:10px;margin-bottom:20px}
.hsec-h h2{margin:0;font-size:clamp(20px,2.3vw,26px)}.hsec-h a{font-weight:600;white-space:nowrap;font-size:14.5px}
/* grid & card */
.grid{display:grid;gap:18px}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.card:hover{box-shadow:0 12px 28px rgba(0,0,0,.09);border-color:#d6d6da}
.c-img{display:block;background:#fff;padding:14px}.c-img img{aspect-ratio:1;object-fit:contain;width:100%;transition:.3s}.card:hover .c-img img{transform:scale(1.04)}
.c-b{padding:4px 16px 16px;display:flex;flex-direction:column;flex:1}
.c-t{font-size:15px;margin:0 0 4px;font-weight:700;line-height:1.4}.c-t a{color:var(--ink)}
.c-s{font-size:13px;color:var(--mut);margin:0 0 10px;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.price{color:var(--red);font-weight:800;font-size:17px}.price.lh,.pp.lh{color:var(--ink2)}
.c-btn{margin-top:12px;display:block;text-align:center;border:1.5px solid var(--line);border-radius:999px;padding:7px;font-weight:600;font-size:13.5px;color:var(--ink)}
.c-btn:hover{border-color:var(--red);color:var(--red);text-decoration:none}
/* van gogh */
.vg{background:#16233b;color:#fff;margin-top:60px;padding:50px 0}.vg-h{text-align:center;max-width:680px;margin:0 auto 26px}.vg-h p{color:#cfd6e4}
/* category */
.cat-hd{padding-top:10px}.cat-hd h1{font-size:clamp(24px,3vw,34px)}
.cat-intro{color:var(--ink2);max-width:960px;margin-bottom:16px}
.tools{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin:6px 0 18px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;font:inherit;font-size:13.5px;font-weight:600;cursor:pointer;color:var(--ink2)}
.chip.on,.chip:hover{border-color:var(--red);color:var(--red)}
.sorter{border:1.5px solid var(--line);border-radius:999px;padding:8px 14px;font:inherit;font-size:13.5px;background:#fff}
.seo-art{margin-top:48px;max-width:980px}.seo-art h2{font-size:22px;margin-top:1.4em}.seo-art h3{font-size:18px;margin-top:1.1em}
.seo-art ul{padding-left:20px}.seo-art li{margin-bottom:6px}
.tbl-wrap{overflow-x:auto}.ptable{border-collapse:collapse;width:100%;min-width:460px}.ptable th,.ptable td{border:1px solid var(--line);padding:10px 12px;text-align:left}.ptable th{background:var(--ink);color:#fff}.ptable tr:nth-child(even) td{background:var(--bg)}
/* faq */
.faq{margin:44px auto 0;max-width:980px}.faq h2{font-size:22px}
.faqi{border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:#fff}
.faqi summary{cursor:pointer;padding:14px 18px;font-weight:600;list-style:none;position:relative;padding-right:44px}
.faqi summary::-webkit-details-marker{display:none}.faqi summary:after{content:"+";position:absolute;right:18px;top:10px;font-size:22px;color:var(--red)}
.faqi[open] summary:after{content:"–"}.faqi div{padding:0 18px 14px;color:var(--ink2)}
/* product */
.pd{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;padding-top:10px;padding-bottom:30px}
.pd-gal{min-width:0;position:sticky;top:130px;align-self:start}.pd-main{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px}
.pd-main img{aspect-ratio:1;object-fit:contain;width:100%}
.pd-th{display:flex;gap:8px;margin-top:12px;overflow-x:auto;padding-bottom:4px}
.th{flex:none;width:72px;height:72px;border:1.5px solid var(--line);border-radius:10px;padding:4px;background:#fff;cursor:pointer}
.th.on{border-color:var(--red)}.th img{width:100%;height:100%;object-fit:contain}
.pd-model{color:var(--mut);font-weight:600;letter-spacing:.04em;text-transform:uppercase;font-size:13px;margin:0 0 6px}
.pd-info h1{font-size:clamp(23px,2.6vw,31px);margin-bottom:6px}.pd-sub{color:var(--ink2);margin:0 0 16px}
.pd-price{background:var(--bg);border-radius:12px;padding:12px 18px;margin-bottom:16px}.pd-price small{display:block;color:var(--mut);font-size:13px}
.pp{color:var(--red);font-size:30px;font-weight:800}
.pd-pts{padding-left:20px;margin:0 0 14px}.pd-pts li{margin-bottom:4px}
.pd-col{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:16px;font-size:14px}
.pd-col a{border:1.5px solid var(--line);border-radius:999px;padding:5px 12px;color:var(--ink2);font-weight:600}.pd-col a:hover{border-color:var(--red);color:var(--red);text-decoration:none}
.pd-cta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}.pd-cta .btn{flex:1;min-width:200px}
.pd-com{list-style:none;padding:14px 18px;margin:0 0 16px;border:1px dashed #f2a3ad;border-radius:12px;background:#fff7f8;font-size:14.5px}.pd-com li{margin:3px 0}
.pd-tbl{width:100%;border-collapse:collapse;font-size:14px}.pd-tbl th,.pd-tbl td{padding:8px 0;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.pd-tbl th{color:var(--mut);font-weight:500;width:44%}
.pd-nav{position:sticky;top:118px;z-index:20;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pd-nav .wrap{display:flex;gap:6px;overflow-x:auto}.pd-nav a{padding:12px 14px;font-weight:600;color:var(--ink2);white-space:nowrap}
.pd-body{max-width:1100px}.blk{padding-top:40px;scroll-margin-top:170px}.blk h2{font-size:clamp(20px,2.3vw,26px);border-left:4px solid var(--red);padding-left:12px}
.bn{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center;margin:22px 0}
.bn-r .bn-m{order:2}.bn-t{grid-template-columns:1fr}
.bn-m img,.bn-m video{width:100%;border-radius:var(--r);aspect-ratio:16/10;object-fit:cover;background:var(--bg)}
.bn-x h3{font-size:19px}.bn-x p{color:var(--ink2);margin:0}
.sub{margin-top:24px}.ft-list{columns:2;column-gap:32px;padding-left:20px}.ft-list li{break-inside:avoid;margin-bottom:6px}
.sp-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 28px}
.sp-g h3{font-size:15.5px;background:var(--bg);padding:9px 12px;border-radius:8px;margin:0 0 4px}
.spt{width:100%;border-collapse:collapse;font-size:14px}.spt th,.spt td{padding:8px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.spt th{font-weight:500;color:var(--mut);width:58%}
.yt{position:relative;max-width:820px;aspect-ratio:16/9;border-radius:var(--r);overflow:hidden;cursor:pointer;margin-bottom:16px;background:#000}
.yt img{width:100%;height:100%;object-fit:cover;opacity:.85}.yt button{position:absolute;inset:0;margin:auto;width:76px;height:54px;border:0;border-radius:14px;background:var(--red);color:#fff;font-size:24px;cursor:pointer}
.yt iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.more{text-align:center;margin-top:18px;font-weight:600}
/* simple pages */
.simple{padding-top:16px;padding-bottom:40px;max-width:980px}.simple h1{font-size:clamp(24px,3vw,32px)}.simple h2{font-size:21px;margin-top:1.4em}
.ct-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:20px 0}.ct-box{background:var(--bg);border-radius:var(--r);padding:22px}
.ct-box h2{margin-top:0}.map iframe{width:100%;height:380px;border:0;border-radius:var(--r)}
/* trust & footer */
.trust{background:var(--bg);margin-top:60px;padding:26px 0}.tr-in{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tr-in div{border-left:3px solid var(--red);padding-left:12px}.tr-in b{display:block}.tr-in span{color:var(--mut);font-size:13.5px}
.ft{background:var(--ink);color:#c9c9cf;padding-top:44px;font-size:14.5px}
.ft-in{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.ft h3{color:#fff;font-size:16px}.ft ul{list-style:none;padding:0;margin:0}.ft li{margin-bottom:7px}.ft a{color:#e4e4e8}
.ft .btn{display:flex;margin-bottom:10px}.ft .btn-ghost{color:#fff}
.ft-b{border-top:1px solid #333;margin-top:30px;padding-top:16px;padding-bottom:20px;font-size:13px;color:#8d8d94}
.mbar{display:none}
/* responsive */
@media (max-width:1024px){.g4{grid-template-columns:repeat(3,1fr)}.hd-call{display:none}.ft-in{grid-template-columns:1fr 1fr}}
@media (max-width:820px){
.topbar span:first-child{display:none}.topbar .wrap{justify-content:center}
.hd-in{flex-wrap:wrap;gap:10px 14px}.burger{display:block}.srch{order:3;flex-basis:100%;max-width:none}
.nav{display:none}body.nav-open .nav{display:block}.nav ul{flex-direction:column}.nav a{border-bottom:1px solid var(--line)}
.g4,.tiles{grid-template-columns:repeat(2,1fr);gap:12px}
.pd{grid-template-columns:1fr;gap:20px}.pd-gal{position:static}
.pd-nav{top:104px}.sp-grid,.bn,.ct-grid,.tr-in{grid-template-columns:1fr}.bn-r .bn-m{order:0}.ft-list{columns:1}
.hero-in{padding-top:56px;padding-bottom:56px}
.mbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;box-shadow:0 -4px 14px rgba(0,0,0,.12)}
.mbar a{flex:1;text-align:center;padding:13px 6px;font-weight:700;color:#fff;text-decoration:none}.mb-call{background:var(--red)}.mb-zalo{background:#0068ff}
body{padding-bottom:50px}}
@media (max-width:480px){.c-b{padding:2px 10px 12px}.c-img{padding:8px}.c-t{font-size:13.5px}.price{font-size:15px}.c-btn{font-size:12.5px}.pp{font-size:25px}
.ft-in{grid-template-columns:1fr}.pd-cta .btn{min-width:0;flex-basis:100%}.hsec-h{flex-direction:column;align-items:flex-start}.lg-a{font-size:16px;padding:7px 10px;letter-spacing:.1em}.lg-x{height:28px}.lg-bx{height:34px}.logo{gap:8px}}
.note{font-size:13.5px;color:var(--mut);margin-top:14px}