/* =========================================================
   Thế Giới Máy Lạnh — giao diện "Showroom băng giá"
   Hoành tráng kiểu siêu thị điện máy: xanh băng – xanh đêm,
   điểm nhấn đỏ cam cho giá sốc, vàng cho ưu đãi.
   ========================================================= */
:root{
  --navy:#061C42;--navy2:#0A2E66;--blue:#0B63E5;--blue2:#1E88FF;--cyan:#22B8F0;--ice:#EAF5FF;--ice2:#F5FAFF;
  --hot:#FF4D1C;--hot2:#E8320A;--sun:#FFC700;--ok:#12A15A;
  --ink:#0E1E38;--ink2:#3E5272;--mute:#6C7E99;--line:#DDE7F3;--bg:#EEF4FB;--white:#fff;
  --r:16px;--sh:0 4px 18px rgba(6,28,66,.08);--sh2:0 18px 44px rgba(6,28,66,.18);
  --font:"Lexend",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --red:var(--hot);--green:var(--ok);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--ink);background:var(--bg);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:3px solid var(--cyan);outline-offset:2px;border-radius:6px}
.wrap{max-width:1280px;margin:0 auto;padding:0 20px}
.muted{color:var(--mute)}.center{text-align:center}.mt{margin-top:14px}.hide{display:none!important}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* ---------- topbar ---------- */
.topbar{background:var(--navy);color:#A9C3E8;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:36px;gap:16px;white-space:nowrap;overflow:hidden}
.topbar b{color:var(--sun);font-weight:600}
.topbar .tb-r{display:flex;gap:22px}
@media(max-width:760px){.topbar .tb-r{display:none}}

/* ---------- header ---------- */
.hd{background:linear-gradient(105deg,#0A2E66 0%,#0B4FC2 55%,#1E88FF 100%);position:sticky;top:0;z-index:50;box-shadow:0 6px 24px rgba(6,28,66,.28)}
.hd .wrap{display:flex;align-items:center;gap:22px;height:78px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0;color:#fff}
.logo .lg-ic{width:48px;height:48px;border-radius:14px;background:linear-gradient(145deg,#fff,#D8ECFF);display:grid;place-items:center;box-shadow:0 6px 16px rgba(0,0,0,.2)}
.logo .lg-ic svg{stroke:var(--blue)}
.logo .lg-t{line-height:1.05}
.logo .lg-t b{display:block;font-size:22px;font-weight:800;letter-spacing:-.3px}
.logo .lg-t b span{color:var(--sun)}
.logo .lg-t small{font-size:12px;color:#CFE4FF;font-weight:400}
.search{flex:1;position:relative;max-width:560px}
.search input{width:100%;height:48px;border-radius:24px;border:0;background:#fff;padding:0 56px 0 22px;font:inherit;font-size:15px;color:var(--ink);outline:none;box-shadow:inset 0 0 0 2px transparent}
.search input:focus{box-shadow:inset 0 0 0 2px var(--sun)}
.search button{position:absolute;right:5px;top:5px;width:38px;height:38px;border-radius:50%;background:var(--sun);display:grid;place-items:center}
.search button svg{stroke:var(--navy)}
.sugg{position:absolute;left:0;right:0;top:56px;background:#fff;border-radius:14px;box-shadow:var(--sh2);display:none;max-height:440px;overflow:auto;z-index:60}
.sugg a{display:flex;gap:12px;align-items:center;padding:9px 14px;border-bottom:1px solid var(--ice);font-size:14px}
.sugg a:hover{background:var(--ice2)}
.sugg img{width:48px;height:48px;object-fit:contain}
.sugg .sp{color:var(--hot);font-weight:700;font-size:13px}
.hd-act{display:flex;gap:6px;margin-left:auto;align-items:center;color:#fff}
.hd-act a{display:flex;align-items:center;gap:10px;padding:7px 14px;border-radius:14px;font-size:12.5px;line-height:1.25}
.hd-act a:hover{background:rgba(255,255,255,.12)}
.hd-act .hot{background:var(--hot);box-shadow:0 6px 16px rgba(255,77,28,.4)}
.hd-act .hot:hover{background:var(--hot2)}
.hd-act a b{display:block;font-size:17px;font-weight:700}
.cart-n{background:var(--sun);color:var(--navy);border-radius:10px;font-size:11px;font-weight:800;padding:0 6px;margin-left:-12px;margin-top:-18px}
@media(max-width:900px){.hd-act .hot{display:none}}
@media(max-width:640px){
  .hd .wrap{flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:12px;gap:10px}
  .logo{flex:1}.logo .lg-t small{display:none}.logo .lg-t b{font-size:19px}
  .search{order:3;flex-basis:100%;max-width:none}.search input{height:44px}
  .hd-act a span:last-child{display:none}
}

/* ---------- nav ---------- */
.nav{background:#fff;box-shadow:0 2px 10px rgba(6,28,66,.05)}
.nav .wrap{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;height:50px;align-items:center}
.nav .wrap::-webkit-scrollbar{display:none}
.nav a{white-space:nowrap;padding:8px 14px;border-radius:12px;font-size:14px;font-weight:500;color:var(--ink2)}
.nav a:hover{background:var(--ice);color:var(--blue)}
.nav a.on{background:var(--blue);color:#fff}

.bc{font-size:13px;color:var(--mute);padding:14px 0;display:flex;flex-wrap:wrap;gap:6px}
.bc a{color:var(--blue)}.bc span{opacity:.5}.bc b{font-weight:500;color:var(--ink2)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 24px;border-radius:24px;font-weight:600;font-size:15px;transition:transform .15s,box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-1px)}
.btn-y{background:var(--sun);color:var(--navy);box-shadow:0 8px 20px rgba(255,199,0,.35)}
.btn-b{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(11,99,229,.3)}
.btn-r{background:linear-gradient(180deg,#FF6A3D,var(--hot2));color:#fff;box-shadow:0 8px 20px rgba(255,77,28,.35)}
.btn-o{background:#fff;color:var(--blue);box-shadow:inset 0 0 0 2px var(--blue)}
.btn-g{background:rgba(255,255,255,.12);color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.45)}
.btn-g:hover{background:rgba(255,255,255,.2)}

/* =========================================================
   HERO "SHOWROOM BĂNG GIÁ"
   ========================================================= */
.hero{position:relative;background:radial-gradient(1200px 520px at 75% 30%,#1E88FF 0%,#0B4FC2 35%,#0A2E66 70%,#061C42 100%);color:#fff;overflow:hidden;padding:46px 0 120px}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(2px 2px at 12% 22%,rgba(255,255,255,.7) 50%,transparent 51%),radial-gradient(2px 2px at 32% 68%,rgba(255,255,255,.5) 50%,transparent 51%),
  radial-gradient(3px 3px at 52% 18%,rgba(255,255,255,.6) 50%,transparent 51%),radial-gradient(2px 2px at 68% 82%,rgba(255,255,255,.5) 50%,transparent 51%),
  radial-gradient(2px 2px at 86% 40%,rgba(255,255,255,.7) 50%,transparent 51%),radial-gradient(3px 3px at 94% 12%,rgba(255,255,255,.5) 50%,transparent 51%),
  radial-gradient(2px 2px at 6% 80%,rgba(255,255,255,.5) 50%,transparent 51%),radial-gradient(2px 2px at 44% 44%,rgba(255,255,255,.4) 50%,transparent 51%);
  animation:snow 14s linear infinite;opacity:.8}
@keyframes snow{from{background-position:0 0}to{background-position:0 400px}}
.hero .wind{position:absolute;left:0;right:0;bottom:60px;height:220px;pointer-events:none;opacity:.55}
.hero .wind path{fill:none;stroke:url(#wg);stroke-width:2;stroke-linecap:round;stroke-dasharray:14 22;animation:wind 6s linear infinite}
.hero .wind path:nth-child(2){animation-duration:8s;opacity:.7}.hero .wind path:nth-child(3){animation-duration:10s;opacity:.5}
@keyframes wind{to{stroke-dashoffset:-360}}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.05fr 1fr;gap:30px;align-items:center}
.hero h1{font-size:50px;line-height:1.08;font-weight:800;letter-spacing:-1px;text-shadow:0 6px 30px rgba(0,0,0,.25)}
.hero h1 span{display:block;background:linear-gradient(90deg,#FFE27A,var(--sun));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{font-size:17px;color:#D2E6FF;margin:16px 0 26px;max-width:520px;font-weight:300}
.hero .acts{display:flex;gap:12px;flex-wrap:wrap}
.stats{display:flex;gap:30px;margin-top:34px;flex-wrap:wrap}
.stats div{line-height:1.2}
.stats b{display:block;font-size:30px;font-weight:800;color:#fff}
.stats span{font-size:13px;color:#A9C9F2}
.show{position:relative;height:380px;display:grid;place-items:center}
.show::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(34,184,240,.55),rgba(34,184,240,0) 65%);filter:blur(6px)}
.show .ring{position:absolute;width:360px;height:360px;border-radius:50%;border:1.5px solid rgba(255,255,255,.18)}
.show .ring.r2{width:440px;height:440px;border-color:rgba(255,255,255,.08)}
.slide{position:absolute;inset:0;display:grid;place-items:center;opacity:0;transform:translateY(16px) scale(.97);transition:opacity .7s,transform .7s}
.slide.on{opacity:1;transform:none}
.slide img{max-width:90%;max-height:230px;object-fit:contain;filter:drop-shadow(0 30px 40px rgba(0,0,0,.45));animation:float 5s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-10px)}}
.slide .tagp{position:absolute;right:4%;bottom:6%;background:#fff;color:var(--ink);border-radius:18px;padding:12px 16px;box-shadow:var(--sh2);max-width:260px}
.slide .tagp small{display:block;font-size:12.5px;color:var(--ink2);line-height:1.35}
.slide .tagp b{display:block;font-size:24px;color:var(--hot);font-weight:800;line-height:1.2}
.slide .tagp s{font-size:12.5px;color:var(--mute)}
.slide .stk{position:absolute;left:6%;top:8%;width:92px;height:92px;border-radius:50%;background:linear-gradient(145deg,#FF7A45,var(--hot2));color:#fff;display:grid;place-items:center;text-align:center;font-weight:800;font-size:26px;line-height:1;box-shadow:0 12px 30px rgba(232,50,10,.5);transform:rotate(-12deg)}
.slide .stk small{display:block;font-size:11px;font-weight:600}
.dots{position:absolute;bottom:-6px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:3}
.dots button{width:9px;height:9px;border-radius:9px;background:rgba(255,255,255,.4);transition:.3s}
.dots button.on{width:28px;background:var(--sun)}
@media(max-width:980px){.hero .wrap{grid-template-columns:1fr}.hero h1{font-size:36px}.show{height:300px}.hero{padding:30px 0 110px}.show::before{width:300px;height:300px}.show .ring{width:260px;height:260px}.show .ring.r2{width:320px;height:320px}}
@media(max-width:520px){.hero h1{font-size:30px}.stats{gap:20px}.stats b{font-size:24px}.slide .tagp{max-width:200px;padding:9px 12px}.slide .tagp b{font-size:19px}.slide .stk{width:72px;height:72px;font-size:20px}}

/* ---------- công cụ chọn công suất (nổi trên hero) ---------- */
.roomtool{position:relative;z-index:5;margin-top:-84px;background:#fff;border-radius:22px;box-shadow:var(--sh2);padding:22px 26px;display:grid;grid-template-columns:1.1fr 1.4fr;gap:26px;align-items:center}
.rt-l h2{font-size:21px;font-weight:700;letter-spacing:-.3px}
.rt-l p{color:var(--ink2);font-size:14px;margin-top:2px}
.lcd{display:flex;align-items:center;gap:18px;background:linear-gradient(135deg,#041633,#0A2E66);color:#8FD8FF;border-radius:14px;padding:12px 18px;margin-top:14px;font-variant-numeric:tabular-nums;box-shadow:inset 0 0 24px rgba(34,184,240,.25)}
.lcd .big{font-size:44px;font-weight:300;line-height:1;text-shadow:0 0 18px rgba(143,216,255,.6)}
.lcd .big small{font-size:17px;margin-left:2px}
.lcd .sub{font-size:12.5px;color:#5FB2E6;line-height:1.35}
.lcd .sub b{display:block;color:#DDF3FF;font-size:19px;font-weight:600;white-space:nowrap}
input[type=range].area{-webkit-appearance:none;appearance:none;width:100%;height:30px;background:transparent;margin:12px 0 2px;cursor:pointer}
input[type=range].area::-webkit-slider-runnable-track{height:10px;border-radius:10px;background:linear-gradient(90deg,#9FE0FF,#1E88FF 45%,#0A2E66)}
input[type=range].area::-moz-range-track{height:10px;border-radius:10px;background:linear-gradient(90deg,#9FE0FF,#1E88FF 45%,#0A2E66)}
input[type=range].area::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;border-radius:50%;background:#fff;border:4px solid var(--blue);margin-top:-9px;box-shadow:0 4px 10px rgba(6,28,66,.35)}
input[type=range].area::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:#fff;border:4px solid var(--blue)}
.scale{position:relative;height:18px;font-size:12px;color:var(--mute);margin:0 14px}
.scale span{position:absolute;top:0;transform:translateX(-50%);white-space:nowrap}
.rt-r{display:grid;grid-template-columns:1.3fr 1fr;gap:14px;align-items:stretch}
.pick{display:grid;grid-template-columns:130px 1fr;gap:14px;align-items:center;background:var(--ice2);border:1px solid var(--line);border-radius:16px;padding:14px;transition:opacity .25s,box-shadow .2s}
.pick:hover{box-shadow:var(--sh)}
.pick.fade{opacity:.35}
.pick img{width:130px;height:100px;object-fit:contain}
.pick h3{font-size:14.5px;font-weight:600;line-height:1.35;margin-bottom:4px}
.pick .p{color:var(--hot);font-weight:800;font-size:20px}
.pick .o{font-size:12.5px;color:var(--mute)}.pick .o s{margin-right:6px}
.rt-side{display:flex;flex-direction:column;justify-content:center;gap:10px}
.rt-side .k{font-size:13px;color:var(--mute)}
.rt-side .btn{width:100%}
.alts{display:none}
@media(max-width:1020px){.roomtool{grid-template-columns:1fr}.rt-r{grid-template-columns:1fr}}
@media(max-width:520px){.roomtool{padding:18px 16px;margin-top:-90px}.pick{grid-template-columns:96px 1fr}.pick img{width:96px;height:80px}.lcd .big{font-size:36px}.lcd{gap:14px;padding:10px 12px}.lcd .sub b{font-size:16px}.scale span:nth-child(2),.scale span:nth-child(4){display:none}}

/* ---------- banner khuyến mãi ---------- */
.promos{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:22px 0}
.promo-b{position:relative;border-radius:20px;padding:22px 22px;color:#fff;min-height:170px;overflow:hidden;display:flex;flex-direction:column;justify-content:center;transition:transform .2s,box-shadow .2s}
.promo-b:hover{transform:translateY(-3px);box-shadow:var(--sh2)}
.promo-b b{font-size:22px;font-weight:800;line-height:1.15;max-width:58%;position:relative;z-index:1}
.promo-b small{font-size:13.5px;opacity:.92;max-width:55%;margin-top:6px;position:relative;z-index:1}
.promo-b em{font-style:normal;display:inline-block;margin-top:12px;background:#fff;color:var(--ink);font-weight:700;font-size:13px;padding:6px 14px;border-radius:16px;width:max-content;position:relative;z-index:1}
.promo-b img{position:absolute;right:3%;bottom:10%;width:44%;max-height:120px;object-fit:contain;filter:drop-shadow(0 16px 20px rgba(0,0,0,.35))}
.promo-b::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.14)}
.pb1{background:linear-gradient(130deg,#FF4D1C,#FF8A00)}
.pb2{background:linear-gradient(130deg,#0B4FC2,#22B8F0)}
.pb3{background:linear-gradient(130deg,#0B7A6E,#2BD1A8)}
@media(max-width:900px){.promos{grid-template-columns:1fr}.promo-b{min-height:140px}}

/* ---------- section ---------- */
.sec{background:#fff;border-radius:22px;padding:24px;margin:22px 0;box-shadow:var(--sh)}
.sec-h{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px;flex-wrap:wrap}
.sec-h h2{font-size:24px;font-weight:800;letter-spacing:-.4px;color:var(--navy);display:flex;align-items:center;gap:12px}
.sec-h h2::before{content:"";width:8px;height:28px;border-radius:6px;background:linear-gradient(180deg,var(--cyan),var(--blue))}
.sec-h a.more{color:var(--blue);font-size:14px;font-weight:600;background:var(--ice);padding:7px 14px;border-radius:14px}
.sec-h a.more:hover{background:var(--blue);color:#fff}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{padding:7px 14px;border-radius:16px;background:var(--ice2);border:1px solid var(--line);font-size:13px;font-weight:500;color:var(--ink2);white-space:nowrap}
.chip:hover,.chip.on{background:var(--blue);border-color:var(--blue);color:#fff}

/* ---------- giá sốc ---------- */
.flash{position:relative;border-radius:24px;padding:22px;margin:22px 0;background:linear-gradient(110deg,#E8320A,#FF4D1C 45%,#FF8A00);box-shadow:0 18px 40px rgba(232,50,10,.25);overflow:hidden}
.flash::before{content:"";position:absolute;right:-80px;top:-120px;width:380px;height:380px;border-radius:50%;background:rgba(255,255,255,.1)}
.flash .sec-h h2{color:#fff;font-size:28px}
.flash .sec-h h2::before{background:var(--sun)}
.flash .sec-h h2 svg{color:var(--sun)}
.flash .sec-h a.more{background:#fff;color:var(--hot2)}
.flash .sub{color:#FFE7D9;font-size:14px;margin:-10px 0 16px;position:relative}
.flash .pc{border:0}

/* ---------- product grid / card ---------- */
.grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.rail{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 56px)/5);gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 10px;scrollbar-width:thin;position:relative}
.rail>*{scroll-snap-align:start}
@media(max-width:1100px){.grid{grid-template-columns:repeat(4,minmax(0,1fr))}.rail{grid-auto-columns:calc((100% - 42px)/4)}}
@media(max-width:820px){.grid{grid-template-columns:repeat(3,minmax(0,1fr))}.rail{grid-auto-columns:calc((100% - 28px)/3)}}
@media(max-width:560px){.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.rail{grid-auto-columns:47%;gap:10px}}
.pc{min-width:0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;display:flex;flex-direction:column;position:relative;transition:transform .2s,box-shadow .2s,border-color .2s}
.pc:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:transparent}
.pc .pimg{aspect-ratio:1/1;display:grid;place-items:center;margin-bottom:10px;position:relative;border-radius:14px;background:radial-gradient(circle at 50% 45%,#fff 0%,#EAF5FF 75%)}
.pc .pimg img{max-height:84%;max-width:92%;object-fit:contain;transition:transform .3s}
.pc:hover .pimg img{transform:scale(1.06)}
.badges{position:absolute;left:8px;top:8px;display:flex;gap:4px;flex-wrap:wrap;z-index:2}
.bdg{font-size:11px;font-weight:700;padding:2px 8px;border-radius:8px;background:var(--blue);color:#fff}
.bdg.inv{background:linear-gradient(90deg,#12A15A,#2BC77A)}
.bdg.c2{background:#FF8A00}
.pc h3{font-size:14px;font-weight:600;line-height:1.4;min-height:39px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px;overflow-wrap:anywhere}
.pc .spec{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:8px}
.pc .spec span{font-size:11.5px;color:var(--ink2);background:var(--ice);border-radius:6px;padding:1px 7px}
.pr{margin-top:auto}
.pr .p{color:var(--hot);font-weight:800;font-size:19px;font-variant-numeric:tabular-nums;letter-spacing:-.2px}
.pr .o{display:flex;gap:6px;align-items:center;font-size:12.5px}
.pr .o s{color:var(--mute)}
.pr .o b{color:#fff;background:var(--hot);font-size:11px;border-radius:6px;padding:0 6px;font-weight:700}
.pc::after{content:"Mua ngay";display:block;margin-top:10px;text-align:center;background:var(--ice);color:var(--blue);font-weight:700;font-size:13.5px;border-radius:12px;padding:8px 0;transition:background .2s,color .2s}
.pc:hover::after{background:linear-gradient(180deg,#FF6A3D,var(--hot2));color:#fff}

/* ---------- công suất ---------- */
.hp-pick{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.hp-pick a{position:relative;border-radius:18px;padding:20px 18px;color:#fff;overflow:hidden;transition:transform .2s,box-shadow .2s;min-height:150px;display:flex;flex-direction:column;justify-content:flex-end}
.hp-pick a:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.hp-pick a:nth-child(1){background:linear-gradient(150deg,#7FD3FF,#22B8F0)}
.hp-pick a:nth-child(2){background:linear-gradient(150deg,#38A9FF,#1E88FF)}
.hp-pick a:nth-child(3){background:linear-gradient(150deg,#1E88FF,#0B63E5)}
.hp-pick a:nth-child(4){background:linear-gradient(150deg,#0B63E5,#0A3F9E)}
.hp-pick a:nth-child(5){background:linear-gradient(150deg,#0A3F9E,#061C42)}
.hp-pick a::before{content:"";position:absolute;right:-30px;top:-30px;width:120px;height:120px;border-radius:50%;background:rgba(255,255,255,.15)}
.hp-pick b{display:block;font-size:34px;font-weight:800;letter-spacing:-1px;line-height:1}
.hp-pick small{display:block;font-size:14px;margin-top:6px;opacity:.95}
.hp-pick span{display:block;font-size:12.5px;margin-top:8px;opacity:.85}
.hp-pick span b{display:inline!important;font-size:13px!important;color:var(--sun)!important;letter-spacing:0!important}
@media(max-width:900px){.hp-pick{grid-template-columns:repeat(2,1fr)}.hp-pick a{min-height:120px}}

/* ---------- thương hiệu ---------- */
.brands{display:grid;grid-template-columns:repeat(7,1fr);gap:12px}
.brands a{height:78px;border-radius:16px;background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:800;font-size:19px;letter-spacing:.3px;color:var(--bc,var(--navy));transition:transform .2s,box-shadow .2s}
.brands a small{font-size:11.5px;color:var(--mute);font-weight:400;letter-spacing:0}
.brands a:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:transparent}
@media(max-width:900px){.brands{grid-template-columns:repeat(4,1fr)}}
@media(max-width:520px){.brands{grid-template-columns:repeat(3,1fr)}.brands a{font-size:16px;height:68px}}

/* ---------- kiểu dáng ---------- */
.types{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.types a{border-radius:18px;padding:18px 12px 16px;background:linear-gradient(180deg,#EAF5FF,#fff);border:1px solid var(--line);text-align:center;transition:transform .2s,box-shadow .2s}
.types a:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.types img{height:100px;margin:0 auto 10px;object-fit:contain;filter:drop-shadow(0 10px 12px rgba(6,28,66,.18))}
.types b{display:block;font-weight:700;color:var(--navy)}
.types small{color:var(--mute)}
@media(max-width:820px){.types{grid-template-columns:repeat(2,1fr)}}

/* ---------- cam kết ---------- */
.why{background:linear-gradient(110deg,#061C42,#0A2E66 60%,#0B4FC2);border-radius:24px;color:#fff;padding:30px;margin:22px 0;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.why div{display:flex;gap:14px;align-items:flex-start}
.why .ic{width:54px;height:54px;border-radius:16px;background:rgba(255,255,255,.1);display:grid;place-items:center;flex-shrink:0;color:var(--sun)}
.why b{display:block;font-size:16px;font-weight:700}
.why small{color:#A9C9F2;font-size:13.5px}
@media(max-width:900px){.why{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.why{grid-template-columns:1fr;padding:22px}}
.trust{display:none}

/* ---------- category page ---------- */
.cat-hd{position:relative;background:radial-gradient(800px 300px at 85% 20%,#1E88FF,#0A2E66 60%,#061C42);color:#fff;border-radius:22px;padding:30px 32px;margin:2px 0 18px;overflow:hidden}
.cat-hd::after{content:"";position:absolute;inset:0;background:radial-gradient(2px 2px at 70% 30%,#fff 50%,transparent 51%),radial-gradient(2px 2px at 88% 70%,#fff 50%,transparent 51%),radial-gradient(3px 3px at 60% 80%,rgba(255,255,255,.7) 50%,transparent 51%),radial-gradient(2px 2px at 95% 25%,#fff 50%,transparent 51%);opacity:.6}
.cat-hd h1{font-size:32px;font-weight:800;letter-spacing:-.6px;line-height:1.15;position:relative;z-index:1}
.cat-hd p{color:#CFE4FF;margin-top:8px;max-width:760px;position:relative;z-index:1}
.lst{display:grid;grid-template-columns:250px 1fr;gap:18px;align-items:start}
.flt{background:#fff;border-radius:20px;padding:18px;box-shadow:var(--sh);position:sticky;top:140px;max-height:calc(100vh - 160px);overflow:auto}
.flt h4{font-size:14px;font-weight:700;margin:16px 0 8px;color:var(--navy)}
.flt h4:first-of-type{margin-top:0}
.flt label{display:flex;gap:9px;align-items:center;font-size:14px;padding:4px 0;cursor:pointer;color:var(--ink2)}
.flt input{accent-color:var(--blue);width:17px;height:17px}
.sortbar{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-bottom:14px;background:#fff;border-radius:16px;padding:10px 12px;box-shadow:var(--sh)}
.sortbar .cnt{margin-right:auto;font-weight:700}
.sortbar button{padding:7px 14px;border-radius:14px;background:var(--ice2);border:1px solid var(--line);font-size:13px;font-weight:500;color:var(--ink2)}
.sortbar button.on{background:var(--blue);color:#fff;border-color:var(--blue)}
.ftoggle{display:none}
.loadmore{display:flex;margin:22px auto 0}
@media(max-width:900px){
  .lst{grid-template-columns:1fr}
  .flt{position:fixed;inset:0 18% 0 0;z-index:90;max-height:none;border-radius:0;transform:translateX(-105%);transition:transform .3s}
  .flt.open{transform:none;box-shadow:20px 0 60px rgba(6,28,66,.3)}
  .ftoggle{display:inline-flex}
}

/* ---------- SEO content ---------- */
.seo{line-height:1.78;font-size:15.5px;color:#22344D}
.seo h2{font-size:23px;font-weight:800;color:var(--navy);margin:26px 0 10px;letter-spacing:-.3px}
.seo h2:first-child{margin-top:0}
.seo h3{font-size:18.5px;font-weight:700;color:var(--blue);margin:20px 0 8px}
.seo p{margin:0 0 12px}
.seo ul,.seo ol{margin:0 0 12px 22px}.seo li{margin:4px 0}
.seo table{width:100%;border-collapse:collapse;margin:10px 0 16px;font-size:14.5px;border-radius:12px;overflow:hidden}
.seo th{background:var(--blue);color:#fff;text-align:left;font-weight:600}
.seo th,.seo td{padding:10px 12px;border-bottom:1px solid var(--line)}
.seo tr:nth-child(even) td{background:var(--ice2)}
.seo a{color:var(--blue);font-weight:600}
.seo img{height:auto;border-radius:12px;margin:12px auto}
.seo strong{color:var(--navy)}
.clamp{max-height:500px;overflow:hidden;position:relative}
.clamp::after{content:"";position:absolute;left:0;right:0;bottom:0;height:130px;background:linear-gradient(rgba(255,255,255,0),#fff)}
.clamp.open{max-height:none}.clamp.open::after{display:none}
.tbl-wrap{overflow-x:auto}
.pl th[colspan]{background:var(--navy)!important}

/* ---------- FAQ ---------- */
.faq details{border:1px solid var(--line);border-radius:14px;margin:8px 0;background:#fff;transition:box-shadow .2s}
.faq details[open]{box-shadow:var(--sh);border-color:transparent}
.faq summary{padding:15px 18px;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";width:26px;height:26px;border-radius:50%;background:var(--ice);color:var(--blue);display:grid;place-items:center;flex-shrink:0;font-size:18px;line-height:1}
.faq details[open] summary::after{content:"–";background:var(--blue);color:#fff}
.faq details div{padding:0 18px 16px;color:var(--ink2)}

/* ---------- product page ---------- */
.pd{display:grid;grid-template-columns:1.05fr 1fr;gap:30px;background:#fff;border-radius:24px;padding:26px;box-shadow:var(--sh)}
.pd h1{font-size:28px;font-weight:800;line-height:1.2;letter-spacing:-.5px;color:var(--navy);overflow-wrap:anywhere}
.gal .main{aspect-ratio:1/1;border-radius:20px;display:grid;place-items:center;padding:28px;background:radial-gradient(circle at 50% 42%,#fff 0%,#E3F1FF 70%,#CFE6FF 100%);position:relative;overflow:hidden}
.gal .main::before{content:"";position:absolute;width:70%;height:70%;border-radius:50%;border:1.5px dashed rgba(11,99,229,.15)}
.gal .main img{max-height:100%;object-fit:contain;position:relative;filter:drop-shadow(0 24px 28px rgba(6,28,66,.22))}
.gal .thumbs{display:flex;gap:8px;margin-top:12px;overflow-x:auto}
.gal .thumbs button{width:76px;height:76px;border:2px solid var(--line);border-radius:14px;padding:5px;flex-shrink:0;background:#fff}
.gal .thumbs button.on{border-color:var(--blue)}
.gal .thumbs img{width:100%;height:100%;object-fit:contain}
.meta{display:flex;gap:6px 16px;flex-wrap:wrap;font-size:13.5px;color:var(--mute);margin:10px 0 14px}
.meta b{color:var(--ink);font-weight:600}
.pbox{background:linear-gradient(110deg,#FFF1EB,#FFF8F3);border:1px solid #FFD5C4;border-radius:18px;padding:16px 18px;margin:8px 0 14px;position:relative;overflow:hidden}
.pbox::after{content:"";position:absolute;right:-30px;top:-30px;width:120px;height:120px;border-radius:50%;background:rgba(255,77,28,.08)}
.pbox .p{font-size:36px;font-weight:800;color:var(--hot);line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.6px}
.pbox .o{margin-top:6px;font-size:14px;color:var(--mute)}
.pbox .o b{color:#fff;background:var(--hot);border-radius:8px;padding:2px 9px;margin-left:8px;font-weight:700}
.pbox .note{font-size:12.5px;color:var(--mute);margin-top:6px}
.keys{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:12px 0}
.keys div{background:var(--ice2);border:1px solid var(--line);border-radius:14px;padding:10px 14px;font-size:13px}
.keys small{display:block;color:var(--mute);font-size:12px}
.keys b{font-size:15px;font-weight:700;color:var(--navy)}
.promo{border:1.5px dashed #FFB38F;background:#FFFAF5;border-radius:16px;padding:14px 18px;margin:14px 0}
.promo h4{font-weight:700;margin-bottom:6px;font-size:15px;color:var(--hot2)}
.promo li{margin-left:18px;font-size:14px;margin-bottom:3px;color:var(--ink2)}
.cta{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.cta .btn{min-height:60px;flex-direction:column;gap:0;line-height:1.2;border-radius:16px;font-weight:800;font-size:16px}
.cta .btn small{font-weight:400;font-size:12.5px;opacity:.95}
.cta .full{grid-column:1/-1;font-size:18px}
.hotline{margin-top:10px;text-align:center;font-size:14px;color:var(--ink2)}
.hotline a{color:var(--hot);font-weight:800}
.pol{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:16px}
.pol div{display:flex;gap:8px;align-items:center;font-size:13.5px;background:var(--ice2);border-radius:12px;padding:9px 12px;color:var(--ink2)}
.pol svg{flex-shrink:0;color:var(--ok)}
@media(max-width:900px){.pd{grid-template-columns:1fr;padding:16px;gap:18px}.pd h1{font-size:22px}}
.pd2{display:grid;grid-template-columns:minmax(0,1fr) 370px;gap:20px;align-items:start;margin-top:22px}
.pd2>.sec{margin:0}
.spec-t{width:100%;border-collapse:collapse;font-size:14px;border-radius:12px;overflow:hidden}
.spec-t td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top;overflow-wrap:anywhere}
.spec-t td:first-child{color:var(--mute);width:46%;background:var(--ice2)}
@media(max-width:900px){.pd2{grid-template-columns:1fr}.pd2 aside{position:static!important}}

/* ---------- mobile buy bar ---------- */
.mbar{display:none}
@media(max-width:760px){
  .mbar{display:grid;grid-template-columns:auto 1fr 1fr;gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:80;background:#fff;padding:8px 10px;box-shadow:0 -6px 20px rgba(6,28,66,.12)}
  .mbar a,.mbar button{height:48px;border-radius:14px;display:grid;place-items:center;font-weight:700;font-size:14px}
  .mbar .z{background:#0068FF;color:#fff;padding:0 14px}
  .mbar .c{background:var(--ice);color:var(--blue)}
  .mbar .b{background:linear-gradient(180deg,#FF6A3D,var(--hot2));color:#fff}
  body.has-mbar{padding-bottom:68px}
}

/* ---------- modal & cart ---------- */
.modal{position:fixed;inset:0;background:rgba(6,28,66,.6);z-index:100;display:none;align-items:center;justify-content:center;padding:16px;backdrop-filter:blur(3px)}
.modal.open{display:flex}
.mbox{background:#fff;border-radius:22px;max-width:520px;width:100%;max-height:92vh;overflow:auto;padding:24px;position:relative}
.mbox h3{font-size:21px;font-weight:800;margin-bottom:10px;color:var(--navy)}
.mbox .x{position:absolute;right:14px;top:10px;font-size:28px;color:var(--mute)}
.fm label{display:block;font-size:13px;font-weight:600;margin:12px 0 5px;color:var(--ink2)}
.fm input,.fm textarea,.fm select{width:100%;border:1px solid var(--line);border-radius:12px;padding:11px 13px;font:inherit;outline:none;background:var(--ice2);color:var(--ink)}
.fm input:focus,.fm textarea:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(11,99,229,.12)}
.fm .row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.ci{display:flex;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.ci img{width:66px;height:66px;object-fit:contain;background:var(--ice);border-radius:12px}
.ci .n{font-size:14px;font-weight:600;flex:1;overflow-wrap:anywhere}
.ci .q{display:flex;align-items:center;border:1px solid var(--line);border-radius:10px}
.ci .q button{width:30px;height:30px;font-weight:700}
.ci .q span{min-width:24px;text-align:center}
.total{display:flex;justify-content:space-between;font-weight:800;font-size:19px;padding:14px 0}
.total b{color:var(--hot)}
.ok{text-align:center;padding:20px 0}
.ok .ic{width:68px;height:68px;border-radius:50%;background:#E3F7EC;color:var(--ok);display:grid;place-items:center;margin:0 auto 12px}
.ok h3{font-weight:800}

/* ---------- footer ---------- */
.ft{background:linear-gradient(180deg,#061C42,#04132E);color:#A9C3E8;margin-top:44px;font-size:14px}
.ft .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;padding-top:44px;padding-bottom:30px}
.ft h4{color:#fff;margin-bottom:14px;font-size:16px;font-weight:700}
.ft a{display:block;padding:3px 0}
.ft a:hover{color:var(--sun)}
.ft .hl{color:var(--sun);font-size:26px;font-weight:800}
.ft-b{border-top:1px solid rgba(255,255,255,.08);text-align:center;padding:16px 20px;font-size:13px;color:#7F98B5}
@media(max-width:820px){.ft .wrap{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.ft .wrap{grid-template-columns:1fr}}

/* ---------- floating contact ---------- */
.fab{position:fixed;right:16px;bottom:24px;z-index:70;display:flex;flex-direction:column;gap:10px}
.fab a{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:0 8px 20px rgba(6,28,66,.3);font-weight:700;font-size:13px}
.fab .zl{background:#0068FF}
.fab .ph{background:var(--hot);animation:ring 1.8s infinite}
@keyframes ring{0%,100%{box-shadow:0 0 0 0 rgba(255,77,28,.5)}70%{box-shadow:0 0 0 14px rgba(255,77,28,0)}}
@media(max-width:760px){.fab{bottom:84px;right:10px}.fab a{width:46px;height:46px}}

/* ---------- calculator ---------- */
.calc{display:grid;grid-template-columns:repeat(4,1fr) auto;gap:12px;align-items:end}
.calc label{font-size:13px;font-weight:600;display:block;margin-bottom:5px;color:var(--ink2)}
.calc input,.calc select{width:100%;height:46px;border:1px solid var(--line);border-radius:12px;padding:0 12px;font:inherit;background:var(--ice2)}
.calc-out{margin-top:14px;padding:16px;border-radius:14px;background:var(--ice);font-weight:600;display:none}
@media(max-width:820px){.calc{grid-template-columns:1fr 1fr}}

/* ---------- news ---------- */
.posts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.post{display:flex;flex-direction:column;border-radius:18px;background:#fff;border:1px solid var(--line);overflow:hidden;transition:transform .2s,box-shadow .2s}
.post:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.post .pimg2{aspect-ratio:16/10;background:radial-gradient(circle at 50% 45%,#fff,#DCEEFF);display:grid;place-items:center;padding:16px}
.post .pimg2 img{max-height:100%;object-fit:contain}
.post .pb{padding:14px 16px}
.post h3{font-size:15.5px;font-weight:700;line-height:1.4;margin-bottom:6px;color:var(--navy)}
.post p{font-size:13.5px;color:var(--ink2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post small{color:var(--mute);display:block;margin-top:6px;font-size:12.5px}
.pager{display:flex;gap:6px;justify-content:center;margin-top:20px}
.pager a{min-width:40px;height:40px;border-radius:12px;display:grid;place-items:center;border:1px solid var(--line);font-weight:600}
.pager a.on{background:var(--blue);color:#fff;border-color:var(--blue)}
@media(max-width:900px){.posts{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* =========================================================
   TRANG DANH MỤC – bản hoành tráng
   ========================================================= */
.cat-hero{position:relative;display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:20px;border-radius:26px;padding:38px 40px;margin:2px 0 18px;color:#fff;overflow:hidden;min-height:330px;
  background:radial-gradient(700px 360px at 82% 40%,var(--c2,#1E88FF) 0%,rgba(11,79,194,.9) 38%,#061C42 85%);box-shadow:0 22px 50px rgba(6,28,66,.28)}
.cat-hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(2px 2px at 10% 20%,rgba(255,255,255,.7) 50%,transparent 51%),radial-gradient(2px 2px at 40% 75%,rgba(255,255,255,.5) 50%,transparent 51%),
  radial-gradient(3px 3px at 60% 15%,rgba(255,255,255,.55) 50%,transparent 51%),radial-gradient(2px 2px at 92% 85%,rgba(255,255,255,.6) 50%,transparent 51%),
  radial-gradient(2px 2px at 75% 55%,rgba(255,255,255,.4) 50%,transparent 51%);animation:snow 16s linear infinite;pointer-events:none}
.cat-hero::after{content:"";position:absolute;left:-10%;right:-10%;bottom:-40px;height:120px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1200' height='120' viewBox='0 0 1200 120'%3E%3Cg fill='none' stroke='%239FE0FF' stroke-opacity='.25' stroke-width='2' stroke-dasharray='14 20'%3E%3Cpath d='M0 40 C200 0 400 80 600 40 S1000 0 1200 40'/%3E%3Cpath d='M0 70 C200 30 400 110 600 70 S1000 30 1200 70'/%3E%3C/g%3E%3C/svg%3E") center/100% 100% no-repeat;pointer-events:none}
.ch-l{position:relative;z-index:2}
.cat-hero h1{font-size:44px;font-weight:800;letter-spacing:-1px;line-height:1.08;text-shadow:0 6px 30px rgba(0,0,0,.25)}
.cat-hero p{color:#D2E6FF;margin:12px 0 22px;max-width:560px;font-weight:300;font-size:16px}
.ch-stats{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px}
.ch-stats div{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(6px);border-radius:16px;padding:10px 16px;line-height:1.2;min-width:110px}
.ch-stats b{display:block;font-size:24px;font-weight:800;color:var(--sun)}
.ch-stats span{font-size:12.5px;color:#CFE4FF}
.cat-hero .acts{display:flex;gap:10px;flex-wrap:wrap}
.ch-r{position:relative;height:260px;z-index:1}
.ch-r .glow{position:absolute;left:50%;top:50%;width:340px;height:340px;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(circle,rgba(159,224,255,.55),rgba(159,224,255,0) 65%)}
.ch-r img{position:absolute;object-fit:contain;filter:drop-shadow(0 22px 26px rgba(0,0,0,.45))}
.ch-r .i0{width:72%;max-height:170px;left:14%;top:22%;z-index:3;animation:float 5s ease-in-out infinite}
.ch-r .i1{width:44%;max-height:100px;left:0;top:0;opacity:.85;z-index:2}
.ch-r .i2{width:44%;max-height:100px;right:0;bottom:2%;opacity:.85;z-index:2}
.ch-tag{position:absolute;right:2%;top:2%;z-index:4;background:linear-gradient(145deg,#FF7A45,var(--hot2));color:#fff;border-radius:18px;padding:10px 14px;max-width:190px;line-height:1.2;box-shadow:0 14px 30px rgba(232,50,10,.45);transform:rotate(3deg)}
.ch-tag small{display:block;font-size:11.5px;opacity:.9}
.ch-tag b{display:block;font-size:28px;font-weight:800}
.ch-tag span{display:block;font-size:11.5px;opacity:.95;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media(max-width:900px){.cat-hero{grid-template-columns:1fr;padding:26px 22px}.cat-hero h1{font-size:32px}.ch-r{height:200px}}
@media(max-width:520px){.cat-hero h1{font-size:27px}.ch-stats div{min-width:0;padding:8px 12px}.ch-stats b{font-size:19px}.ch-r{height:170px}.ch-tag b{font-size:22px}}

/* lọc nhanh */
.quick{display:flex;align-items:center;gap:14px;background:#fff;border-radius:20px;padding:12px 16px;box-shadow:var(--sh);margin-bottom:18px}
.quick>span{font-weight:700;color:var(--navy);white-space:nowrap;font-size:14px}
.qs{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:2px}
.qs::-webkit-scrollbar{display:none}
.q-chip{white-space:nowrap;padding:8px 16px;border-radius:14px;border:1.5px solid var(--line);font-weight:700;font-size:14px;color:var(--bc,var(--blue));background:#fff;transition:.2s}
.q-chip.hp{color:var(--blue);background:var(--ice2)}
.q-chip:hover{border-color:var(--bc,var(--blue))}
.q-chip.on{background:var(--bc,var(--blue));border-color:var(--bc,var(--blue));color:#fff}
@media(max-width:520px){.quick>span{display:none}}

/* giảm sâu trong danh mục */
.fl-cat{padding:20px}
.fl-cat .sec-h{margin-bottom:12px}
.fl-cat .sec-h h2{font-size:24px}
.fl-cat .sub2{color:#FFE7D9;font-size:14px}

/* bộ lọc dạng nút */
.flt{padding:0;overflow:hidden auto}
.flt-h{display:flex;justify-content:space-between;align-items:center;padding:16px 18px;background:linear-gradient(110deg,#0A2E66,#0B63E5);color:#fff}
.flt-h b{font-size:16px;font-weight:700}
.flt-h .close{display:none;font-size:26px;line-height:1;color:#fff;background:none;box-shadow:none;padding:0;min-height:0}
.flt h4{padding:0 18px;margin:16px 0 8px!important}
.flt .fg{display:flex;flex-wrap:wrap;gap:6px;padding:0 18px}
.flt label{position:relative;display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:12px;border:1.5px solid var(--line);font-size:13.5px;font-weight:500;color:var(--ink2);background:#fff;cursor:pointer;transition:.15s}
.flt label span{font-size:11.5px;color:var(--mute);background:var(--ice);border-radius:8px;padding:0 6px}
.flt label input{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.flt label:hover{border-color:var(--bc,var(--blue))}
.flt label:has(input:checked){background:var(--bc,var(--blue));border-color:var(--bc,var(--blue));color:#fff}
.flt label:has(input:checked) span{background:rgba(255,255,255,.25);color:#fff}
.flt label:has(input:focus-visible){outline:3px solid var(--cyan);outline-offset:2px}
.freset{margin:18px;width:calc(100% - 36px);min-height:40px}
.sortbar .ftoggle{background:var(--blue);color:#fff;border-color:var(--blue)}
@media(max-width:900px){.flt-h .close{display:block}}
@media(max-width:520px){
  .ch-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
  .ch-stats div{padding:8px 10px}.ch-stats b{font-size:17px}.ch-stats span{font-size:11.5px}
  .cat-hero .acts .btn{flex:1;padding:0 14px;font-size:14px}
  .ch-r{height:150px}.ch-tag{max-width:150px;padding:8px 12px}
}

/* =========================================================
   DANH MỤC TRÊN ĐIỆN THOẠI – tràn lề, bo góc vừa phải
   ========================================================= */
@media(max-width:640px){
  .pg-cat main.wrap{padding:0}
  .pg-cat .bc{padding:10px 14px;font-size:12.5px}
  .pg-cat .cat-hero{border-radius:0;margin:0;padding:22px 16px 18px;min-height:0;box-shadow:none;gap:6px}
  .pg-cat .cat-hero h1{font-size:26px;letter-spacing:-.5px}
  .pg-cat .cat-hero p{font-size:14.5px;margin:8px 0 16px}
  .pg-cat .ch-stats{margin-bottom:16px}
  .pg-cat .ch-stats div{border-radius:10px}
  .pg-cat .cat-hero .acts .btn{border-radius:10px;min-height:44px}
  .pg-cat .ch-r{height:140px;margin-top:4px}
  .pg-cat .ch-tag{border-radius:10px}

  .pg-cat .quick{border-radius:0;margin:0;box-shadow:none;padding:10px 12px;border-bottom:1px solid var(--line)}
  .pg-cat .q-chip{border-radius:10px;padding:7px 13px;font-size:13.5px}

  .pg-cat .fl-cat{border-radius:0;margin:0;padding:16px 12px 12px;box-shadow:none}
  .pg-cat .fl-cat .sec-h{margin-bottom:10px}
  .pg-cat .fl-cat .sec-h h2{font-size:19px}
  .pg-cat .fl-cat .sub2{font-size:12.5px}
  .pg-cat .rail{grid-auto-columns:44%;gap:8px;padding:2px 0 8px}

  .pg-cat .lst{gap:0}
  .pg-cat .sortbar{border-radius:0;margin:0 0 8px;box-shadow:none;border-bottom:1px solid var(--line);padding:10px 12px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;gap:6px}
  .pg-cat .sortbar::-webkit-scrollbar{display:none}
  .pg-cat .sortbar .cnt{order:-2;margin-right:4px;white-space:nowrap;font-size:13.5px}
  .pg-cat .sortbar .ftoggle{order:-1;border-radius:10px}
  .pg-cat .sortbar button{border-radius:10px;white-space:nowrap;padding:7px 12px;flex-shrink:0}

  .pg-cat .grid{gap:6px;padding:0 6px}
  .pg-cat .pc{border-radius:12px;padding:8px}
  .pg-cat .pc:hover{transform:none}
  .pg-cat .pc .pimg{border-radius:8px;margin-bottom:8px}
  .pg-cat .badges{left:5px;top:5px}
  .pg-cat .bdg{border-radius:6px;font-size:10.5px;padding:1px 6px}
  .pg-cat .pc h3{font-size:13px;min-height:36px;margin-bottom:6px}
  .pg-cat .pc .spec span{font-size:10.5px;border-radius:5px}
  .pg-cat .pr .p{font-size:16px}
  .pg-cat .pr .o{font-size:11.5px}
  .pg-cat .pc::after{border-radius:8px;padding:7px 0;font-size:12.5px;margin-top:8px}
  .pg-cat .loadmore{width:calc(100% - 12px);border-radius:10px;margin:12px auto 0}

  .pg-cat .sec{border-radius:0;margin:10px 0 0;padding:20px 14px;box-shadow:none}
  .pg-cat .faq details{border-radius:10px}
  .pg-cat .flt{inset:0 12% 0 0}
  .pg-cat .flt label{border-radius:10px}
  .pg-cat .ft{margin-top:0}
}
@media(max-width:900px){.lst{grid-template-columns:minmax(0,1fr)}.lst>div{min-width:0}}
@media(max-width:640px){.pg-cat .pc .pimg{aspect-ratio:4/3}}

/* =========================================================
   NỘI DUNG BÀI VIẾT / SẢN PHẨM / TRANG TĨNH TRÊN ĐIỆN THOẠI
   tràn sát viền, bo góc nhỏ
   ========================================================= */
@media(max-width:640px){
  .pg-full main.wrap{padding:0}
  .pg-full .bc{padding:10px 14px;font-size:12.5px}
  .pg-full .sec{border-radius:0;margin:8px 0 0;padding:20px 14px;box-shadow:none}
  .pg-full .cat-hd{border-radius:0;margin:0;padding:22px 16px}
  .pg-full .cat-hd h1{font-size:25px}
  .pg-full .pd2{gap:0;margin-top:0}
  .pg-full .pd2>.sec{margin-top:8px}
  .pg-full .seo{font-size:15.5px;line-height:1.75}
  .pg-full .seo h2{font-size:20px;margin:22px 0 8px}
  .pg-full .seo h3{font-size:17px}
  .pg-full .seo img{border-radius:6px;margin:10px -14px;max-width:calc(100% + 28px);width:calc(100% + 28px)}
  .pg-full .seo table{border-radius:6px;font-size:13.5px}
  .pg-full .seo th,.pg-full .seo td{padding:8px 10px}
  .pg-full .tbl-wrap{margin:0 -14px;padding:0 14px}
  .pg-full .faq details{border-radius:8px}
  .pg-full .faq summary{padding:13px 12px}
  .pg-full .faq details div{padding:0 12px 14px}
  .pg-full .promo{border-radius:8px}
  .pg-full .btn{border-radius:10px}
  .pg-full .clamp::after{height:100px}
  .pg-full .calc input,.pg-full .calc select{border-radius:8px}
  .pg-full .calc-out{border-radius:8px}
  /* trang sản phẩm */
  .pg-prod .pd{border-radius:0;padding:0 0 16px;box-shadow:none;gap:0}
  .pg-prod .gal .main{border-radius:0;padding:18px}
  .pg-prod .gal .thumbs{padding:0 14px}
  .pg-prod .gal .thumbs button{border-radius:8px;width:64px;height:64px}
  .pg-prod .pd>div:last-child{padding:14px 14px 0}
  .pg-prod .pbox,.pg-prod .keys div,.pg-prod .pol div{border-radius:10px}
  .pg-prod .cta .btn{border-radius:10px}
  .pg-prod .spec-t{border-radius:6px}
  .pg-prod .rail{grid-auto-columns:44%;gap:8px}
  .pg-prod .pc{border-radius:12px;padding:8px}
  /* bài viết */
  .pg-post article.sec h1{font-size:24px!important;line-height:1.3}
  .pg-post aside .grid{gap:6px}
  .posts{gap:10px}
  .pg-full .post{border-radius:12px}
  .pg-full .pager a{border-radius:8px}
  .pg-full .ft{margin-top:0}
}

/* =========================================================
   MOBILE 2026 – dàn trang sát lề kiểu app mua sắm
   ========================================================= */
@media(max-width:640px){
  /* header gọn */
  .topbar{display:none}
  .hd .wrap{padding:8px 12px 10px;gap:8px}
  .logo{gap:9px}.logo .lg-ic{width:38px;height:38px;border-radius:11px}.logo .lg-ic svg{width:22px;height:22px}
  .logo .lg-t b{font-size:17px}
  .search input{height:40px;font-size:14px;padding-left:16px}
  .search button{width:32px;height:32px;top:4px;right:4px}
  .hd-act a{padding:4px 6px}
  .nav .wrap{height:44px;padding:0 8px}
  .nav a{padding:6px 11px;font-size:13.5px;border-radius:10px}

  /* thẻ sản phẩm chung trên điện thoại */
  .grid{gap:6px}
  .pc{border-radius:12px;padding:8px}
  .pc:hover{transform:none;box-shadow:none}
  .pc .pimg{aspect-ratio:4/3;border-radius:8px;margin-bottom:8px}
  .badges{left:5px;top:5px}
  .bdg{border-radius:6px;font-size:10.5px;padding:1px 6px}
  .pc h3{font-size:13px;min-height:36px;margin-bottom:6px}
  .pc .spec span{font-size:10.5px}
  .pr .p{font-size:16px}.pr .o{font-size:11.5px}
  .pc::after{border-radius:8px;padding:7px 0;font-size:12.5px;margin-top:8px}

  /* ---------- TRANG CHỦ ---------- */
  .pg-home main.wrap{padding:0}
  .pg-home .hero{padding:22px 0 54px}
  .pg-home .hero .wrap{padding:0 16px;gap:4px}
  .pg-home .hero h1{font-size:23px;letter-spacing:-.4px}
  .pg-home .hero h1 span{font-size:21px;margin-top:4px}
  .pg-home .hero .lead{font-size:14px;margin:10px 0 16px}
  .pg-home .hero .acts{display:grid;grid-template-columns:1.3fr 1fr;gap:8px}
  .pg-home .hero .acts .btn{border-radius:10px;min-height:44px;padding:0 10px;font-size:14px}
  .pg-home .stats{gap:0;margin-top:18px;display:grid;grid-template-columns:repeat(3,1fr);border:1px solid rgba(255,255,255,.18);border-radius:12px;overflow:hidden}
  .pg-home .stats div{padding:9px 10px;border-right:1px solid rgba(255,255,255,.18)}
  .pg-home .stats div:last-child{border-right:0}
  .pg-home .stats b{font-size:20px}.pg-home .stats span{font-size:11.5px}
  .pg-home .show{height:200px;margin-top:8px}
  .pg-home .show::before{width:240px;height:240px}
  .pg-home .show .ring{width:200px;height:200px}.pg-home .show .ring.r2{width:250px;height:250px}
  .pg-home .slide img{max-height:120px;max-width:72%}
  .pg-home .slide .stk{width:62px;height:62px;font-size:17px;left:2%;top:4%}
  .pg-home .slide .stk small{font-size:9px}
  .pg-home .slide .tagp{right:0;bottom:2%;border-radius:12px;padding:8px 10px;max-width:180px}
  .pg-home .slide .tagp b{font-size:17px}.pg-home .slide .tagp small{font-size:11px}
  .pg-home .dots{bottom:-14px}

  /* ô chọn diện tích: bảng trượt bo góc trên */
  .pg-home .roomtool{margin-top:-26px;border-radius:20px 20px 0 0;padding:18px 14px 16px;box-shadow:0 -8px 24px rgba(6,28,66,.12);gap:14px}
  .pg-home .rt-l h2{font-size:18px}.pg-home .rt-l p{font-size:13px}
  .pg-home .lcd{border-radius:12px;margin-top:10px}
  .pg-home .rt-r{gap:10px}
  .pg-home .pick{border-radius:12px;padding:10px;grid-template-columns:90px 1fr;gap:10px}
  .pg-home .pick img{width:90px;height:70px}
  .pg-home .pick h3{font-size:13px}.pg-home .pick .p{font-size:17px}
  .pg-home .rt-side{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .pg-home .rt-side .k{grid-column:1/-1}
  .pg-home .rt-side .btn{border-radius:10px;min-height:42px;font-size:13px;padding:0 8px}

  /* các dải vuốt ngang */
  .pg-home .promos,.pg-home .hp-pick,.pg-home .types,.pg-home .posts{display:grid;grid-auto-flow:column;grid-template-columns:none;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;gap:8px;padding:0 12px 2px;margin:0}
  .pg-home .promos::-webkit-scrollbar,.pg-home .hp-pick::-webkit-scrollbar,.pg-home .types::-webkit-scrollbar,.pg-home .posts::-webkit-scrollbar{display:none}
  .pg-home .promos>*,.pg-home .hp-pick>*,.pg-home .types>*,.pg-home .posts>*{scroll-snap-align:start}
  .pg-home .promos{grid-auto-columns:84%;padding:12px 12px 4px;background:#fff}
  .pg-home .promo-b{min-height:128px;border-radius:14px;padding:16px}
  .pg-home .promo-b b{font-size:18px}.pg-home .promo-b small{font-size:12.5px}
  .pg-home .promo-b em{margin-top:8px;font-size:12px;padding:5px 12px;border-radius:10px}
  .pg-home .promo-b img{max-height:90px}
  .pg-home .hp-pick{grid-auto-columns:128px}
  .pg-home .hp-pick a{min-height:112px;border-radius:12px;padding:14px 12px}
  .pg-home .hp-pick b{font-size:24px}.pg-home .hp-pick small{font-size:12px}.pg-home .hp-pick span{font-size:11px}
  .pg-home .types{grid-auto-columns:124px}
  .pg-home .types a{border-radius:12px;padding:12px 8px}
  .pg-home .types img{height:64px}
  .pg-home .posts{grid-auto-columns:76%}
  .pg-home .post{border-radius:12px}
  .pg-home .brands{grid-auto-flow:column;grid-template-columns:none;grid-template-rows:repeat(2,58px);grid-auto-columns:96px;overflow-x:auto;scrollbar-width:none;gap:6px;padding:0 12px 2px}
  .pg-home .brands::-webkit-scrollbar{display:none}
  .pg-home .brands a{height:auto;border-radius:10px;font-size:14.5px}
  .pg-home .brands a:hover{transform:none}

  /* khối nội dung sát lề */
  .pg-home .sec{border-radius:0;margin:8px 0 0;padding:16px 0;box-shadow:none}
  .pg-home .sec-h{padding:0 12px;margin-bottom:12px;gap:8px}
  .pg-home .sec-h h2{font-size:18px;gap:8px}
  .pg-home .sec-h h2::before{width:5px;height:20px}
  .pg-home .sec-h a.more{font-size:12.5px;padding:5px 10px;border-radius:8px}
  .pg-home .sec-h .chips{order:3;width:100%;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
  .pg-home .sec-h .chips::-webkit-scrollbar{display:none}
  .pg-home .chip{border-radius:8px;padding:5px 11px;font-size:12.5px}
  .pg-home .sec .grid{padding:0 6px}
  .pg-home .sec .grid .pc:nth-child(n+7){display:none}
  .pg-home .flash{border-radius:0;margin:8px 0 0;padding:16px 0 12px;box-shadow:none}
  .pg-home .flash .sec-h h2{font-size:20px}
  .pg-home .flash .sub{padding:0 12px;margin:-6px 0 10px;font-size:12.5px}
  .pg-home .flash .rail{padding:2px 12px 6px;grid-auto-columns:44%;gap:8px}
  .pg-home .why{border-radius:0;margin:8px 0 0;padding:18px 14px;grid-template-columns:1fr 1fr;gap:14px}
  .pg-home .why div{flex-direction:column;gap:8px}
  .pg-home .why .ic{width:42px;height:42px;border-radius:12px}
  .pg-home .why b{font-size:14px}.pg-home .why small{font-size:12px}
  .pg-home .seo{padding:0 14px}
  .pg-home .sec .center{padding:0 14px}
  .pg-home .faq{padding:0 12px}
  .pg-home .faq details{border-radius:8px}
  .pg-home .ft{margin-top:0}

  /* ---------- DANH MỤC: tinh chỉnh thêm ---------- */
  .pg-cat .cat-hero{padding:20px 16px 16px}
  .pg-cat .cat-hero h1{font-size:24px}
  .pg-cat .cat-hero p{font-size:13.5px}
  .pg-cat .fl-cat .rail{padding:2px 0 6px}
  .pg-cat .sec-h h2{font-size:18px}
}
@media(max-width:640px){
  .pc .pimg{min-height:0;overflow:hidden}
  .pc .pimg img{height:auto;max-height:86%;width:auto;max-width:90%}
}
@media(max-width:640px){.pc .spec{flex-wrap:nowrap;overflow:hidden}.pc .spec span:nth-child(3){display:none}}

/* =========================================================
   ẢNH ĐẠI DIỆN SẢN PHẨM
   Ảnh gốc là ảnh vuông nền trắng đặc → dùng ô vuông,
   hòa nền trắng (multiply) trên nền sáng, và khung trắng trên nền tối.
   ========================================================= */
.pc .pimg{aspect-ratio:1/1!important;background:#F3F7FC;padding:6px;overflow:hidden;min-height:0}
.pc .pimg img{width:100%!important;height:100%!important;max-width:none!important;max-height:none!important;object-fit:contain;mix-blend-mode:multiply;filter:none}
.pc:hover .pimg img{transform:scale(1.04)}
.pick img,.sugg img,.ci img,.gal .thumbs img,.alts img,.post .pimg2 img,.types img,.gal .main img{mix-blend-mode:multiply;filter:none!important}
.gal .main{background:#F3F7FC}
.gal .main::before{display:none}
.gal .main img{width:100%;height:100%;object-fit:contain}
.types a{background:#F3F7FC}
.types img{width:100%;height:110px;object-fit:contain}
.post .pimg2{background:#F3F7FC}

/* banner trang chủ: ảnh trong khung trắng nổi */
.slide img{width:min(320px,74%);height:auto;max-width:none;max-height:none;aspect-ratio:1/1;object-fit:contain;background:#fff;border-radius:28px;padding:18px;filter:none;box-shadow:0 28px 60px rgba(0,0,0,.38),0 0 0 6px rgba(255,255,255,.12)}
.slide .tagp{right:0;bottom:4%}
.slide .stk{left:4%;top:2%;z-index:2}
.show{height:400px}

/* banner danh mục */
.ch-r img{background:#fff;object-fit:contain;filter:none;box-shadow:0 20px 44px rgba(0,0,0,.35);aspect-ratio:1/1}
.ch-r .i0{width:auto;height:210px;max-height:none;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:24px;padding:14px;animation:none}
.ch-r .i1,.ch-r .i2{width:auto;height:120px;max-height:none;border-radius:18px;padding:8px;opacity:1}
.ch-r .i1{left:2%;top:4%;transform:rotate(-6deg)}
.ch-r .i2{right:2%;left:auto;bottom:2%;transform:rotate(5deg)}
.ch-r{height:280px}

/* banner khuyến mãi */
.promo-b img{width:118px;height:118px;max-height:none;right:16px;bottom:50%;transform:translateY(50%);object-fit:contain;background:#fff;border-radius:20px;padding:8px;filter:none;box-shadow:0 12px 26px rgba(0,0,0,.25)}

@media(max-width:980px){.show{height:300px}.slide img{width:min(240px,60%)}}
@media(max-width:640px){
  .pc .pimg{padding:4px}
  .pg-home .show{height:230px}
  .pg-home .slide img{width:170px;max-width:none;max-height:none;border-radius:20px;padding:10px}
  .pg-home .slide .tagp{max-width:170px}
  .pg-cat .ch-r{height:170px}
  .ch-r .i0{height:140px;border-radius:18px;padding:8px}
  .ch-r .i1,.ch-r .i2{height:80px;border-radius:14px;padding:5px}
  .pg-home .promo-b img{width:88px;height:88px;border-radius:14px;padding:5px;right:12px}
  .pg-home .promo-b b,.pg-home .promo-b small{max-width:62%}
  .pg-home .types img{height:70px}
}