/* NTT catalog — premium, mobile-first, sáng/tối qua CSS var */
:root{
  --p:#2F6BFF; --p-dark:#1B4FD6; --p-soft:#E8EFFF;
  --cam:#0AA5E8; --wifi:#7657FF; --robot:#F28A00;
  --ok:#159A5B; --warn:#E07B00; --danger:#D83A3A;
  --bg:#F4F6FA; --bg2:#EBEFF6; --card:#FFFFFF; --card2:#F8FAFD; --line:#E3E8F0; --line2:#D3DAE6;
  --txt:#0E1624; --txt2:#4F5B6E; --txt3:#8792A4;
  --ink:#070B14; --ink2:#0E1524; --ink-line:rgba(255,255,255,.09);
  --r:18px; --r-sm:12px; --sh:0 1px 2px rgba(14,22,36,.05),0 8px 28px -12px rgba(14,22,36,.18);
  --sh-lg:0 30px 80px -30px rgba(10,20,50,.45);
  --f:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',sans-serif; --mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
  --nav-h:64px; --safe:env(safe-area-inset-bottom,0px);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
  --p-soft:#15224A; --bg:#080C15; --bg2:#0C1220; --card:#101726; --card2:#131C2E; --line:#1E2839; --line2:#2A3549;
  --txt:#EAF0FA; --txt2:#A5B0C2; --txt3:#6D798D; --sh:0 1px 2px rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.7); color-scheme:dark}}
:root[data-theme=dark]{
  --p-soft:#15224A; --bg:#080C15; --bg2:#0C1220; --card:#101726; --card2:#131C2E; --line:#1E2839; --line2:#2A3549;
  --txt:#EAF0FA; --txt2:#A5B0C2; --txt3:#6D798D; --sh:0 1px 2px rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.7); color-scheme:dark}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:var(--f);background:var(--bg);color:var(--txt);font-size:15px;line-height:1.55;min-height:100vh;
  padding-bottom:calc(var(--nav-h) + var(--safe) + 8px);overflow-x:hidden;-webkit-font-smoothing:antialiased}
@media(min-width:900px){body{padding-bottom:0}}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
.ic{width:20px;height:20px;flex:none;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.wrap{max-width:1240px;margin:0 auto;padding:0 16px}
@media(min-width:900px){.wrap{padding:0 28px}}
.mono{font-family:var(--mono);letter-spacing:-.01em}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
:focus-visible{outline:2px solid var(--p);outline-offset:2px;border-radius:8px}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 78%,transparent);backdrop-filter:saturate(1.6) blur(16px);
  -webkit-backdrop-filter:saturate(1.6) blur(16px);border-bottom:1px solid var(--line)}
.hdr.on-dark{background:rgba(7,11,20,.55);border-color:var(--ink-line);color:#fff}
.hdr .wrap{display:flex;align-items:center;gap:14px;height:62px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;font-size:19px}
.logo svg{width:34px;height:34px}
.logo small{display:block;white-space:nowrap;font-size:10.5px;font-weight:600;letter-spacing:.14em;color:var(--txt3);text-transform:uppercase;margin-top:-3px}
.hdr.on-dark .logo small{color:rgba(255,255,255,.55)}
.topnav{display:none;gap:4px;margin-left:18px}
.topnav a{white-space:nowrap;padding:8px 13px;border-radius:999px;font-weight:600;font-size:14px;color:var(--txt2);display:flex;gap:7px;align-items:center;transition:.2s}
.hdr.on-dark .topnav a{color:rgba(255,255,255,.72)}
.topnav a:hover,.topnav a.on{background:var(--card);color:var(--txt);box-shadow:var(--sh)}
.hdr.on-dark .topnav a:hover,.hdr.on-dark .topnav a.on{background:rgba(255,255,255,.1);color:#fff;box-shadow:none}
.topnav .ic{width:17px;height:17px}
.hdr-act{margin-left:auto;display:flex;gap:6px;align-items:center}
.iconbtn{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;position:relative;color:var(--txt2);transition:.2s}
.iconbtn:hover{background:var(--card);color:var(--txt)}
.hdr.on-dark .iconbtn{color:rgba(255,255,255,.8)}.hdr.on-dark .iconbtn:hover{background:rgba(255,255,255,.1)}
.badge{position:absolute;top:4px;right:4px;min-width:17px;height:17px;padding:0 4px;border-radius:9px;background:var(--p);color:#fff;font-size:10.5px;font-weight:700;display:grid;place-items:center}
.badge:empty,.badge[data-n="0"]{display:none}
.searchpill{display:none;align-items:center;gap:10px;height:42px;padding:0 14px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--txt3);min-width:250px;font-size:14px}
.hdr.on-dark .searchpill{background:rgba(255,255,255,.07);border-color:var(--ink-line);color:rgba(255,255,255,.55)}
.searchpill kbd{margin-left:auto;font-family:var(--mono);font-size:11px;border:1px solid var(--line2);border-radius:6px;padding:1px 6px}
@media(min-width:900px){.topnav,.searchpill{display:flex}.hdr-act .only-m{display:none}}

/* ---------- thanh nổi (mobile) — NGOÀI header ---------- */
.mnav{position:fixed;left:8px;right:8px;bottom:calc(8px + var(--safe));z-index:60;height:var(--nav-h);border-radius:22px;
  background:color-mix(in srgb,var(--card) 88%,transparent);backdrop-filter:blur(18px) saturate(1.5);-webkit-backdrop-filter:blur(18px) saturate(1.5);
  border:1px solid var(--line);box-shadow:0 12px 40px -12px rgba(0,0,0,.35);display:grid;grid-template-columns:repeat(5,1fr);align-items:center;animation:mnavUp .5s cubic-bezier(.2,.9,.3,1.2)}
.mnav a{display:flex;flex-direction:column;align-items:center;gap:3px;font-size:10.5px;font-weight:600;color:var(--txt3);min-height:48px;justify-content:center;position:relative}
.mnav a.on{color:var(--p)}
.mnav a.on::after{content:"";position:absolute;bottom:2px;width:16px;height:3px;border-radius:3px;background:var(--p)}
.mnav .mid{margin-top:-30px}
.mnav .mid span{width:56px;height:56px;border-radius:18px;display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,var(--p),#7C5CFF);box-shadow:0 10px 24px -6px color-mix(in srgb,var(--p) 70%,transparent)}
.mnav .mid span .ic{width:24px;height:24px}
.mnav .mid.on::after{display:none}
@keyframes mnavUp{from{transform:translateY(120%)}to{transform:none}}
@media(min-width:900px){.mnav{display:none}}

/* ---------- nút ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 20px;border-radius:14px;font-weight:700;font-size:14.5px;
  border:1px solid var(--line2);background:var(--card);transition:transform .15s,box-shadow .2s,background .2s;white-space:nowrap}
.btn:hover{transform:translateY(-1px);box-shadow:var(--sh)}
.btn:active{transform:none}
.btn.pri{background:var(--p);border-color:var(--p);color:#fff;box-shadow:0 8px 22px -8px color-mix(in srgb,var(--p) 80%,transparent)}
.btn.pri:hover{background:var(--p-dark)}
.btn.ghost{background:transparent}
.btn.glass{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18);color:#fff}
.btn.zalo{background:#0068FF;border-color:#0068FF;color:#fff}
.btn.sm{height:36px;padding:0 13px;border-radius:10px;font-size:13px}
.btn .ic{width:18px;height:18px}
.chip{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 11px;border-radius:999px;background:var(--card2);border:1px solid var(--line);font-size:12.5px;font-weight:600;color:var(--txt2);white-space:nowrap}
.chip b{color:var(--txt);font-weight:700}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;margin-top:-63px;padding:120px 0 64px;isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;z-index:-2;
  background:radial-gradient(900px 500px at 78% 30%,rgba(47,107,255,.35),transparent 60%),radial-gradient(700px 420px at 10% 90%,rgba(118,87,255,.28),transparent 60%),radial-gradient(500px 300px at 95% 95%,rgba(242,138,0,.18),transparent 60%)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px;
  mask-image:radial-gradient(ellipse at 60% 40%,#000 20%,transparent 75%)}
.hero .wrap{display:grid;gap:36px}
.eyebrow{display:inline-flex;gap:8px;align-items:center;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.7);
  padding:6px 12px;border:1px solid var(--ink-line);border-radius:999px;background:rgba(255,255,255,.04)}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:#35E08C;box-shadow:0 0 12px #35E08C}
.hero h1{font-size:clamp(34px,7.4vw,64px);line-height:1.04;letter-spacing:-.035em;font-weight:800;margin:18px 0 16px;max-width:14ch}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#7FB0FF,#B49BFF 50%,#FFC37A);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:clamp(15px,2.2vw,18px);color:rgba(255,255,255,.72);max-width:52ch}
.hero-search{margin-top:26px;display:flex;align-items:center;gap:10px;height:58px;padding:0 8px 0 18px;border-radius:18px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);max-width:560px;color:rgba(255,255,255,.6);font-size:15px;backdrop-filter:blur(10px);transition:.2s;width:100%;text-align:left}
.hero-search:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3)}
.hero-search .btn{margin-left:auto;height:44px}
.hero-search .hs-t{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hero-cta{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.hero-stats{display:flex;gap:28px;margin-top:30px;flex-wrap:wrap}
.hero-stats b{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em}
.hero-stats span{font-size:12.5px;color:rgba(255,255,255,.55)}
.hero-stage{position:relative;min-height:300px;display:grid;place-items:center}
.hero-stage .orb{position:absolute;width:78%;aspect-ratio:1;border-radius:50%;border:1px solid rgba(255,255,255,.1);
  background:radial-gradient(circle at 50% 40%,rgba(255,255,255,.1),transparent 62%)}
.hero-stage .orb::after{content:"";position:absolute;inset:12%;border-radius:50%;border:1px dashed rgba(255,255,255,.1);animation:spin 60s linear infinite}
.hero-stage img{position:relative;width:min(78%,420px);aspect-ratio:1;object-fit:contain;filter:drop-shadow(0 40px 50px rgba(0,0,0,.55));transition:opacity .5s,transform .7s cubic-bezier(.2,.8,.2,1)}
.hero-stage img.swap{opacity:0;transform:translateY(14px) scale(.96)}
.hero-float{position:absolute;padding:10px 14px;border-radius:14px;background:rgba(14,21,36,.72);border:1px solid var(--ink-line);backdrop-filter:blur(12px);font-size:12.5px;
  box-shadow:0 20px 40px -20px #000;animation:float 6s ease-in-out infinite}
.hero-float b{display:block;font-family:var(--mono);font-size:14px}
.hero-float.f1{left:0;top:18%}.hero-float.f2{right:0;bottom:16%;animation-delay:-3s}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes float{50%{transform:translateY(-10px)}}
@media(min-width:900px){.hero{padding:150px 0 90px}.hero .wrap{grid-template-columns:1.1fr .9fr;align-items:center}.hero-stage{min-height:460px}}

/* ---------- section ---------- */
.sec{padding:54px 0}
.sec-h{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}
.sec-h h2{font-size:clamp(24px,4vw,34px);letter-spacing:-.03em;line-height:1.1;font-weight:800}
.sec-h p{color:var(--txt2);margin-top:6px}
.kicker{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--p);margin-bottom:8px}

/* 3 mảng */
.sectors{display:grid;gap:14px}
@media(min-width:760px){.sectors{grid-template-columns:repeat(3,1fr)}}
.sector{position:relative;overflow:hidden;border-radius:24px;padding:24px;min-height:250px;background:var(--card);border:1px solid var(--line);box-shadow:var(--sh);
  display:flex;flex-direction:column;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s;isolation:isolate}
.sector:hover{transform:translateY(-4px);box-shadow:var(--sh-lg)}
.sector::before{content:"";position:absolute;inset:auto -30% -45% 20%;height:80%;border-radius:50%;background:var(--c);opacity:.14;filter:blur(40px);z-index:-1}
.sector .sic{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:color-mix(in srgb,var(--c) 14%,transparent);color:var(--c)}
.sector h3{font-size:24px;letter-spacing:-.02em;margin-top:16px}
.sector p{color:var(--txt2);font-size:14px;margin-top:4px;max-width:24ch}
.sector .cnt{margin-top:auto;padding-top:18px;font-weight:700;font-size:13.5px;display:flex;gap:6px;align-items:center;color:var(--c)}
.sector img{position:absolute;right:-12px;bottom:-6px;width:52%;aspect-ratio:1;object-fit:contain;transition:transform .5s cubic-bezier(.2,.8,.2,1);filter:drop-shadow(0 20px 20px rgba(0,0,0,.18))}
.sector:hover img{transform:scale(1.06) rotate(-2deg)}

/* ---------- lưới sản phẩm ---------- */
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media(min-width:700px){.grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}}
@media(min-width:1100px){.grid.g4{grid-template-columns:repeat(4,minmax(0,1fr))}}
.pc{position:relative;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  transition:transform .3s cubic-bezier(.2,.8,.2,1),box-shadow .3s,border-color .3s;animation:pcIn .45s both}
.pc:hover{transform:translateY(-3px);box-shadow:var(--sh-lg);border-color:var(--line2)}
@keyframes pcIn{from{opacity:0;transform:translateY(10px)}}
.pc .ph{position:relative;aspect-ratio:1/0.86;display:grid;place-items:center;background:radial-gradient(circle at 50% 42%,var(--card),var(--card2) 70%);border-bottom:1px solid var(--line)}
.pc .ph img{position:absolute;inset:10% 11%;width:78%;height:80%;object-fit:contain;transition:transform .5s cubic-bezier(.2,.8,.2,1);filter:drop-shadow(0 10px 14px rgba(10,20,40,.14))}
.pc:hover .ph img{transform:scale(1.06)}
.pc .sec-dot{position:absolute;left:10px;top:10px;font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 8px;border-radius:8px;
  color:var(--c);background:color-mix(in srgb,var(--c) 12%,var(--card))}
.pc .tools{position:absolute;right:8px;top:8px;display:flex;flex-direction:column;gap:6px}
.pc .tools button{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;background:color-mix(in srgb,var(--card) 90%,transparent);border:1px solid var(--line);color:var(--txt2);transition:.2s}
.pc .tools button:hover{color:var(--txt)}
.pc .tools button.on{color:#fff;background:var(--p);border-color:var(--p)}
.pc .tools button.fav.on{background:#FF3D6E;border-color:#FF3D6E}
.pc .tools .ic{width:17px;height:17px}
.pc .bd{padding:12px 13px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.pc .brand{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--txt3)}
.pc h3{font-family:var(--mono);font-size:14.5px;font-weight:700;line-height:1.3;word-break:break-word}
.pc .sub{font-size:12.5px;color:var(--txt2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pc .keys{display:flex;flex-wrap:wrap;gap:5px;margin-top:2px}
.pc .keys span{font-size:11.5px;font-weight:600;padding:3px 7px;border-radius:7px;background:var(--bg);color:var(--txt2);border:1px solid var(--line)}
.pc .price{margin-top:auto;padding-top:6px;font-weight:800;font-size:14px;color:var(--p)}
.pc .price.contact{color:var(--txt2);font-weight:600;font-size:12.5px}
@media(min-width:700px){.pc .bd{padding:14px 16px 16px}.pc h3{font-size:15.5px}}

/* ---------- trang danh mục ---------- */
.pagehead{padding:26px 0 14px}
.crumbs{display:flex;gap:6px;font-size:13px;color:var(--txt3);flex-wrap:wrap}
.crumbs a:hover{color:var(--p)}
.pagehead h1{font-size:clamp(28px,5vw,42px);letter-spacing:-.035em;margin-top:8px;line-height:1.1}
.pagehead p{color:var(--txt2);margin-top:6px}
.cat-layout{display:grid;gap:20px;padding-bottom:40px}
@media(min-width:1000px){.cat-layout{grid-template-columns:270px 1fr;align-items:start}}
.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:14px;position:sticky;top:62px;z-index:20;padding:10px 0;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px)}
.field{display:flex;align-items:center;gap:8px;height:44px;padding:0 13px;border-radius:13px;border:1px solid var(--line2);background:var(--card);transition:.2s}
.field:focus-within{border-color:var(--p);box-shadow:0 0 0 4px color-mix(in srgb,var(--p) 18%,transparent)}
.field input,.field select{border:0;background:none;outline:0;min-width:0;flex:1;font-size:16px;height:100%}
@media(min-width:900px){.field input,.field select{font-size:14.5px}}
.toolbar .field.q{flex:1;min-width:180px}
.toolbar .count{font-size:13px;color:var(--txt3);margin-left:auto}
.qfilters{display:flex;gap:7px;overflow-x:auto;padding:2px 0 12px;scrollbar-width:none}
.qfilters::-webkit-scrollbar{display:none}
.qf{flex:none;height:36px;padding:0 13px;border-radius:999px;border:1px solid var(--line2);background:var(--card);font-size:13px;font-weight:600;color:var(--txt2);transition:.2s}
.qf.on{background:var(--txt);color:var(--bg);border-color:var(--txt)}
.filters{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:6px 16px 16px}
.fg{border-bottom:1px solid var(--line);padding:12px 0}
.fg:last-child{border:0}
.fg h4{font-size:13px;font-weight:700;display:flex;justify-content:space-between;align-items:center;cursor:pointer;min-height:30px}
.fg h4 .ic{width:16px;height:16px;transition:.2s}
.fg.closed h4 .ic{transform:rotate(-90deg)}
.fg.closed .opts{display:none}
.opts{display:flex;flex-direction:column;gap:2px;margin-top:6px;max-height:230px;overflow:auto}
.opt{display:flex;align-items:center;gap:10px;min-height:36px;padding:0 6px;border-radius:9px;font-size:13.5px;cursor:pointer}
.opt:hover{background:var(--bg)}
.opt input{width:18px;height:18px;flex:none;accent-color:var(--p)}
.opt em{margin-left:auto;font-style:normal;font-size:11.5px;color:var(--txt3)}
.filters-head{display:flex;justify-content:space-between;align-items:center;padding:12px 0 4px;font-weight:800}
.filters-head button{font-size:12.5px;color:var(--p);font-weight:700}
.filter-btn{display:inline-flex}
@media(min-width:1000px){.filter-btn{display:none}}
@media(max-width:999px){
  .filters{position:fixed;left:0;right:0;bottom:0;z-index:90;max-height:82vh;overflow:auto;border-radius:24px 24px 0 0;padding-bottom:calc(90px + var(--safe));
    transform:translateY(105%);transition:transform .35s cubic-bezier(.2,.8,.2,1);box-shadow:0 -20px 60px rgba(0,0,0,.3)}
  .filters.open{transform:none}
  .filters .apply{position:fixed;left:16px;right:16px;bottom:calc(16px + var(--safe))}
}
@media(min-width:1000px){.filters{position:sticky;top:80px;max-height:calc(100vh - 100px);overflow:auto}.filters .apply,.filters .grab{display:none}}
.grab{width:42px;height:5px;border-radius:5px;background:var(--line2);margin:10px auto 0}
.scrim{position:fixed;inset:0;background:rgba(5,8,15,.5);backdrop-filter:blur(2px);z-index:85;opacity:0;pointer-events:none;transition:.3s}
.scrim.on{opacity:1;pointer-events:auto}
.empty{text-align:center;padding:60px 20px;color:var(--txt2)}
.empty .ic{width:44px;height:44px;margin:0 auto 10px;color:var(--txt3)}

/* ---------- trang sản phẩm ---------- */
.pd{display:grid;gap:22px;padding:6px 0 30px}
@media(min-width:960px){.pd{grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}.pd-gal{position:sticky;top:80px}}
.gal-main{position:relative;border-radius:24px;overflow:hidden;background:radial-gradient(circle at 50% 40%,var(--card),var(--card2) 75%);border:1px solid var(--line)}
.embla{overflow:hidden}
.embla__c{display:flex;touch-action:pan-y pinch-zoom}
.embla__s{flex:0 0 100%;min-width:0;aspect-ratio:1/0.9;display:grid;place-items:center;cursor:zoom-in}
.embla__s{position:relative}.embla__s img{position:absolute;inset:7% 8%;width:84%;height:86%;object-fit:contain;filter:drop-shadow(0 24px 30px rgba(10,20,40,.18))}
.gal-nav{position:absolute;inset:auto 12px 12px auto;display:flex;gap:6px}
.gal-nav button{width:40px;height:40px;border-radius:12px;background:color-mix(in srgb,var(--card) 85%,transparent);border:1px solid var(--line);display:grid;place-items:center}
.gal-count{position:absolute;left:14px;bottom:14px;font-family:var(--mono);font-size:12px;padding:4px 9px;border-radius:8px;background:color-mix(in srgb,var(--card) 85%,transparent);border:1px solid var(--line)}
.thumbs{display:flex;gap:8px;margin-top:10px;overflow-x:auto;scrollbar-width:none}
.thumbs button{flex:none;width:68px;height:68px;border-radius:14px;border:2px solid var(--line);background:var(--card);padding:6px;transition:.2s}
.thumbs button.on{border-color:var(--p)}
.thumbs img{width:100%;height:100%;object-fit:contain}
.pd-info .brandline{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.pd-info h1{font-family:var(--mono);font-size:clamp(26px,4.4vw,38px);letter-spacing:-.03em;line-height:1.12;margin:10px 0 6px;word-break:break-word}
.pd-info .subt{color:var(--txt2);font-size:16px}
.pd-price{margin:18px 0;padding:16px 18px;border-radius:16px;background:var(--card);border:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.pd-price b{font-size:24px;letter-spacing:-.02em;color:var(--p)}
.pd-price b.contact{font-size:17px;color:var(--txt)}
.pd-price small{display:block;font-size:12px;color:var(--txt3)}
.keyspecs{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:14px 0}
@media(min-width:600px){.keyspecs{grid-template-columns:repeat(3,1fr)}}
.ks{padding:12px 13px;border-radius:14px;background:var(--card);border:1px solid var(--line)}
.ks span{display:block;font-size:11.5px;color:var(--txt3);font-weight:600}
.ks b{font-family:var(--mono);font-size:14.5px;display:block;margin-top:2px;word-break:break-word}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0 4px}
.tag{font-size:12px;font-weight:600;padding:5px 10px;border-radius:999px;background:color-mix(in srgb,var(--c,var(--p)) 12%,transparent);color:var(--c,var(--p))}
.pd-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}
.pd-actions .btn{width:100%}
.pd-actions .btn.wide{grid-column:1/-1}
@media(min-width:600px){.pd-actions{grid-template-columns:repeat(4,1fr)}.pd-actions .btn.wide{grid-column:span 2}}
.pd-actions .btn.on{background:var(--p-soft);border-color:var(--p);color:var(--p)}
.pd-actions .btn.fav.on{color:#FF3D6E;border-color:#FF3D6E;background:color-mix(in srgb,#FF3D6E 10%,transparent)}

.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin:28px 0 0;overflow-x:auto;scrollbar-width:none;position:sticky;top:62px;background:var(--bg);z-index:15}
.tabs button{flex:none;height:48px;padding:0 16px;font-weight:700;font-size:14px;color:var(--txt3);border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs button.on{color:var(--txt);border-color:var(--p)}
.panel{padding:18px 0}
.panel[hidden]{display:none}
.spec-tools{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.spec-tools .field{flex:1;min-width:200px}
.spec{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.spec th,.spec td{padding:12px 16px;text-align:left;vertical-align:top;font-size:14px;border-bottom:1px solid var(--line)}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}
.spec th{width:38%;font-weight:600;color:var(--txt2);background:var(--card2)}
.spec td{font-family:var(--mono);font-size:13.5px}
.spec tr.hide{display:none}
.spec mark{background:color-mix(in srgb,var(--warn) 30%,transparent);color:inherit;border-radius:3px}
@media(max-width:600px){.spec,.spec tbody,.spec tr,.spec th,.spec td{display:block;width:auto}.spec th{border-bottom:0;padding-bottom:2px;background:none;font-size:12.5px;color:var(--txt3)}.spec td{padding-top:0}.spec tr{border-bottom:1px solid var(--line)}.spec tr th,.spec tr td{border:0}}
.term{border-bottom:1.5px dotted var(--p);cursor:help;color:inherit;font:inherit;padding:0}
.feats{display:grid;gap:10px}
.feats li{list-style:none;display:flex;gap:12px;padding:14px 16px;border-radius:14px;background:var(--card);border:1px solid var(--line);font-size:14.5px}
.feats li .ic{color:var(--ok);margin-top:2px}
.video{border-radius:18px;overflow:hidden;background:#000;aspect-ratio:16/9}
.video video{width:100%;height:100%}

/* popover thuật ngữ */
.pop{position:fixed;z-index:120;max-width:320px;padding:14px 16px;border-radius:14px;background:var(--ink2);color:#E9EEF7;font-size:13.5px;line-height:1.5;
  box-shadow:0 20px 50px -10px rgba(0,0,0,.5);border:1px solid var(--ink-line);animation:popIn .18s ease}
.pop b{display:block;color:#fff;margin-bottom:4px;font-size:14px}
.pop a{color:#8FB5FF;font-size:12.5px;display:inline-block;margin-top:6px}
@keyframes popIn{from{opacity:0;transform:translateY(4px)}}

/* ---------- khay so sánh ---------- */
.ctray{position:fixed;left:50%;transform:translate(-50%,160%);bottom:calc(var(--nav-h) + var(--safe) + 18px);z-index:70;width:min(640px,calc(100% - 24px));
  background:var(--ink2);color:#fff;border-radius:18px;padding:10px 10px 10px 14px;display:flex;align-items:center;gap:10px;box-shadow:0 20px 50px -10px rgba(0,0,0,.55);
  transition:transform .4s cubic-bezier(.2,.9,.3,1.2),visibility .4s;border:1px solid var(--ink-line);visibility:hidden}
.ctray.on{transform:translate(-50%,0);visibility:visible}
@media(min-width:900px){.ctray{bottom:24px}}
.ctray .ims{display:flex;gap:6px;flex:1;min-width:0}
.ctray .ims span{width:44px;height:44px;border-radius:11px;background:#fff;padding:4px;flex:none;position:relative}
.ctray .ims span img{width:100%;height:100%;object-fit:contain}
.ctray .ims span.slot{background:rgba(255,255,255,.06);border:1px dashed rgba(255,255,255,.2)}
.ctray .lbl{font-size:12.5px;color:rgba(255,255,255,.7);white-space:nowrap}
.ctray .x{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:rgba(255,255,255,.6)}

/* ---------- so sánh ---------- */
.cmp-wrap{overflow-x:auto;border-radius:18px;border:1px solid var(--line);background:var(--card);-webkit-overflow-scrolling:touch}
.cmp{border-collapse:separate;border-spacing:0;min-width:100%}
.cmp th,.cmp td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;font-size:13.5px;min-width:170px;max-width:260px}
.cmp thead th{position:sticky;top:0;background:var(--card);z-index:2;text-align:left}
.cmp th:first-child,.cmp td:first-child{position:sticky;left:0;background:var(--card2);z-index:1;min-width:128px;max-width:150px;font-weight:600;color:var(--txt2);font-size:12.5px}
.cmp thead th:first-child{z-index:3}
.cmp td{font-family:var(--mono);font-size:12.8px}
.cmp tr.diff td{background:color-mix(in srgb,var(--p) 6%,transparent)}
.cmp tr.diff td:first-child{box-shadow:inset 3px 0 var(--p)}
.cmp td.best{color:var(--ok);font-weight:700}
.cmp tr.grp td{background:var(--bg2);font-family:var(--f);font-weight:800;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--txt3)}
.cmp .hp{display:flex;flex-direction:column;gap:8px}
.cmp .hp img{width:100%;height:110px;object-fit:contain}
.cmp .hp b{font-family:var(--mono);font-size:13.5px}
.cmp .hp .rm{align-self:flex-start;font-size:12px;color:var(--danger);font-weight:600}
.cmp.only-diff tr.same{display:none}
.switch{display:inline-flex;align-items:center;gap:10px;font-size:14px;font-weight:600;cursor:pointer;min-height:44px}
.switch input{appearance:none;width:44px;height:26px;border-radius:26px;background:var(--line2);position:relative;transition:.2s;cursor:pointer}
.switch input::after{content:"";position:absolute;left:3px;top:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.3)}
.switch input:checked{background:var(--p)}
.switch input:checked::after{transform:translateX(18px)}

/* ---------- tư vấn ---------- */
.wiz{max-width:760px;margin:0 auto;padding-bottom:40px}
.wiz-prog{height:6px;border-radius:6px;background:var(--line);overflow:hidden;margin:10px 0 24px}
.wiz-prog i{display:block;height:100%;background:linear-gradient(90deg,var(--p),#7C5CFF);transition:width .4s}
.wiz h2{font-size:clamp(22px,4vw,30px);letter-spacing:-.03em;margin-bottom:6px}
.wiz .hint{color:var(--txt2);margin-bottom:18px}
.choices{display:grid;gap:10px}
@media(min-width:600px){.choices{grid-template-columns:1fr 1fr}}
.choice{display:flex;gap:14px;align-items:center;text-align:left;padding:16px;border-radius:16px;border:1.5px solid var(--line);background:var(--card);transition:.2s;min-height:72px}
.choice:hover{border-color:var(--line2);transform:translateY(-2px);box-shadow:var(--sh)}
.choice.on{border-color:var(--p);background:var(--p-soft)}
.choice .em{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--bg);font-size:22px;flex:none}
.choice b{display:block;font-size:15px}
.choice small{color:var(--txt2);font-size:12.5px}
.wiz-nav{display:flex;justify-content:space-between;margin-top:22px;gap:10px}
.why{font-size:12px;color:var(--ok);font-weight:600;display:flex;flex-direction:column;gap:2px}

/* ---------- thuật ngữ ---------- */
.gl{display:grid;gap:10px}
@media(min-width:760px){.gl{grid-template-columns:1fr 1fr}}
.gi{padding:16px 18px;border-radius:16px;background:var(--card);border:1px solid var(--line)}
.gi h3{font-size:16px;display:flex;gap:8px;align-items:center;justify-content:space-between}
.gi p{color:var(--txt2);font-size:14px;margin-top:6px}

/* ---------- overlay tìm kiếm / chia sẻ / lightbox ---------- */
.ov{position:fixed;inset:0;z-index:110;display:none;background:rgba(5,8,15,.55);backdrop-filter:blur(6px)}
.ov.on{display:block;animation:fade .2s}
@keyframes fade{from{opacity:0}}
.sbox{max-width:680px;margin:0 auto;background:var(--card);min-height:100%;display:flex;flex-direction:column}
@media(min-width:760px){.sbox{margin:9vh auto 0;min-height:0;max-height:78vh;border-radius:22px;overflow:hidden;box-shadow:var(--sh-lg);border:1px solid var(--line)}}
.sbox .field{border:0;border-bottom:1px solid var(--line);border-radius:0;height:62px;padding:0 18px;box-shadow:none!important}
.sbox .field input{font-size:17px}
.sres{overflow:auto;padding:8px;flex:1}
.sres a{display:flex;gap:12px;align-items:center;padding:10px;border-radius:12px}
.sres a:hover,.sres a.hl{background:var(--bg)}
.sres img{width:52px;height:52px;object-fit:contain;border-radius:10px;background:var(--card2);border:1px solid var(--line);padding:3px;flex:none}
.sres b{font-family:var(--mono);font-size:14px;display:block}
.sres small{color:var(--txt2);font-size:12.5px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.sres .grp{font-size:11.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--txt3);padding:12px 10px 4px}
.sheet{position:fixed;left:0;right:0;bottom:0;background:var(--card);border-radius:24px 24px 0 0;padding:8px 18px calc(22px + var(--safe));animation:up .3s cubic-bezier(.2,.8,.2,1)}
@media(min-width:760px){.sheet{left:50%;right:auto;bottom:auto;top:50%;transform:translate(-50%,-50%);width:440px;border-radius:24px;animation:fade .2s}}
@keyframes up{from{transform:translateY(100%)}}
.sheet h3{font-size:18px;margin:10px 0 4px}
.sheet .sp{display:flex;gap:12px;align-items:center;padding:12px;border-radius:14px;background:var(--bg);margin:12px 0}
.sheet .sp img{width:54px;height:54px;object-fit:contain}
.share-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:6px}
.share-grid button,.share-grid a{display:flex;flex-direction:column;align-items:center;gap:7px;font-size:12px;font-weight:600;color:var(--txt2);padding:8px 0;border-radius:14px}
.share-grid button:hover,.share-grid a:hover{background:var(--bg)}
.share-grid i{width:50px;height:50px;border-radius:16px;display:grid;place-items:center;color:#fff;font-style:normal;font-weight:800;font-size:15px}
.qr{display:none;text-align:center;margin-top:12px}
.qr.on{display:block}
.qr canvas,.qr img{margin:0 auto;border-radius:12px;background:#fff;padding:10px}
.lb{background:rgba(3,5,10,.94)}
.lb img{position:absolute;inset:0;margin:auto;max-width:94vw;max-height:88vh;object-fit:contain;touch-action:pinch-zoom}
.lb .close{position:absolute;top:calc(12px + env(safe-area-inset-top,0px));right:12px;color:#fff;background:rgba(255,255,255,.1)}
.lb .lnav{position:absolute;top:50%;transform:translateY(-50%);color:#fff;background:rgba(255,255,255,.1)}
.lb .lnav.l{left:12px}.lb .lnav.r{right:12px}

/* toast (mẫu premium) */
.toasts{position:fixed;left:50%;transform:translateX(-50%);top:calc(12px + env(safe-area-inset-top,0px));z-index:200;display:flex;flex-direction:column;gap:8px;width:min(360px,calc(100% - 24px))}
.toast{display:flex;align-items:center;gap:12px;padding:12px;border-radius:14px;color:#fff;overflow:hidden;position:relative;
  background:linear-gradient(135deg,#1c2a4a,#23366b);box-shadow:0 12px 35px rgba(20,40,120,.35);animation:tIn .45s cubic-bezier(.2,.9,.3,1.2)}
.toast.ok{background:linear-gradient(135deg,#166534,#15803d 50%,#16a34a);box-shadow:0 12px 35px rgb(34 197 94/.35)}
.toast .ti{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.15);flex:none}
.toast p{font-size:13.5px;font-weight:600}
.toast::after{content:"";position:absolute;left:0;bottom:0;height:3px;background:rgba(255,255,255,.5);animation:tBar 2.6s linear forwards}
@keyframes tIn{from{opacity:0;transform:translateY(-16px) scale(.96)}}
@keyframes tBar{from{width:100%}to{width:0}}

/* footer */
.ftr{background:var(--ink);color:rgba(255,255,255,.7);padding:44px 0 30px;margin-top:40px;font-size:14px}
.ftr .wrap{display:grid;gap:26px}
@media(min-width:800px){.ftr .wrap{grid-template-columns:1.4fr 1fr 1fr}}
.ftr h4{color:#fff;font-size:14px;margin-bottom:10px}
.ftr a{display:block;padding:4px 0}
.ftr a:hover{color:#fff}
.ftr .logo{color:#fff}
.ftr .copy{border-top:1px solid var(--ink-line);padding-top:18px;font-size:12.5px;grid-column:1/-1;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}

/* nút liên hệ nổi */
.fab{position:fixed;right:14px;bottom:calc(var(--nav-h) + var(--safe) + 22px);z-index:55;display:flex;flex-direction:column;gap:10px}
.fab a{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:0 10px 26px -8px rgba(0,0,0,.45);font-weight:800;font-size:13px}
@media(min-width:900px){.fab{bottom:26px;right:24px}}
body.has-tray .fab{display:none}

/* reveal */
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s,transform .7s cubic-bezier(.2,.8,.2,1)}
.rv.in{opacity:1;transform:none}
.brands{display:flex;gap:10px;flex-wrap:wrap}
.brands span{padding:10px 18px;border-radius:14px;border:1px solid var(--line);background:var(--card);font-weight:800;letter-spacing:.02em;color:var(--txt2)}
.why-grid{display:grid;gap:12px}
@media(min-width:760px){.why-grid{grid-template-columns:repeat(4,1fr)}}
.why-grid div{padding:20px;border-radius:18px;background:var(--card);border:1px solid var(--line)}
.why-grid .ic{width:28px;height:28px;color:var(--p)}
.why-grid b{display:block;margin:10px 0 4px}
.why-grid p{font-size:13.5px;color:var(--txt2)}
.hscroll{display:grid;grid-auto-flow:column;grid-auto-columns:min(260px,72%);gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:6px;scrollbar-width:thin}
.hscroll>*{scroll-snap-align:start}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.rv{opacity:1;transform:none}}
@media print{.hdr,.mnav,.fab,.ctray,.tabs,.pd-actions,.spec-tools,.ftr,.thumbs,.gal-nav{display:none!important}.panel[hidden]{display:block!important}body{background:#fff;padding:0}.pd{grid-template-columns:1fr 1.4fr}}

/* ---------- xem thử theo thiết bị (desktop) ---------- */
.dv-btn{display:none;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:12px;font-weight:700;font-size:13.5px;
  background:color-mix(in srgb,#C8A24A 22%,var(--card));color:#8A6A1F;border:1px solid color-mix(in srgb,#C8A24A 35%,transparent);white-space:nowrap}
.dv-btn:hover{background:color-mix(in srgb,#C8A24A 32%,var(--card))}
.hdr.on-dark .dv-btn{background:rgba(200,162,74,.18);color:#F1D38A;border-color:rgba(241,211,138,.25)}
@media(min-width:900px){.dv-btn{display:inline-flex}}
.in-frame .dv-btn,.in-frame [data-install]{display:none!important}
.dv{position:fixed;inset:0;z-index:300;display:none;flex-direction:column;background:#DCD8D0;background:radial-gradient(1200px 700px at 50% 0%,#E9E6DF,#D6D2C9)}
:root[data-theme=dark] .dv{background:radial-gradient(1200px 700px at 50% 0%,#1d2230,#0d1018)}
.dv.on{display:flex;animation:fade .25s}
.dv-bar{align-self:center;margin:12px 0 4px;display:flex;gap:4px;padding:6px;border-radius:16px;background:#fff;box-shadow:0 10px 30px -12px rgba(0,0,0,.35);border:1px solid rgba(0,0,0,.06)}
.dv-bar button{display:flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:11px;font-weight:600;font-size:14.5px;color:#3a3f4a;font-family:var(--f);transition:.18s}
.dv-bar button .ic{width:19px;height:19px}
.dv-bar button:hover{background:#F2F1EE}
.dv-bar button.on{background:#1B1916;color:#fff}
.dv-bar .dv-exit{color:#C0392B}
.dv-bar .dv-exit:hover{background:#FCEDEB}
.dv-stage{flex:1;min-height:0;position:relative;overflow:hidden}
.dv-dev{position:absolute;left:50%;top:50%;transform-origin:center center;background:#0B0B0C;border-radius:44px;padding:12px;box-shadow:0 40px 80px -30px rgba(0,0,0,.55),inset 0 0 0 2px #2a2a2c;transition:width .35s,height .35s,transform .35s cubic-bezier(.2,.8,.2,1)}
.dv-dev iframe{width:100%;height:100%;border:0;border-radius:32px;background:var(--bg);display:block}
.dv[data-dev=phone] .dv-dev{border-radius:56px;padding:12px}
.dv[data-dev=phone] .dv-dev iframe{border-radius:44px}
.dv[data-dev=web] .dv-dev{border-radius:14px;padding:0;box-shadow:0 30px 70px -30px rgba(0,0,0,.5);border:1px solid rgba(0,0,0,.12)}
.dv[data-dev=web] .dv-dev iframe{border-radius:14px}
.dv-size{position:absolute;right:16px;bottom:12px;font-family:var(--mono);font-size:12px;color:#7a7568}
@media(max-width:899px){.dv{display:none!important}}

/* nút cài ứng dụng (PWA) */
.install{display:none}
.install.on{display:inline-flex}
.ios-tip{position:fixed;left:12px;right:12px;bottom:calc(var(--nav-h) + var(--safe) + 18px);z-index:95;background:var(--ink2);color:#fff;border-radius:18px;padding:14px 16px;
  font-size:13.5px;box-shadow:0 20px 50px -10px rgba(0,0,0,.5);display:flex;gap:12px;align-items:flex-start;animation:up .35s cubic-bezier(.2,.8,.2,1)}
.ios-tip b{display:block;margin-bottom:2px}
.ios-tip button{margin-left:auto;color:rgba(255,255,255,.7);flex:none}

@media(min-width:900px) and (max-width:1279px){.searchpill{display:none!important}.hdr-act .only-m{display:grid!important}.topnav{margin-left:8px}.topnav a{padding:8px 10px}}
@media(max-width:1439px){.dv-btn .lbl{display:none}.dv-btn{padding:0 11px}}