/* ================== BIẾN MÀU ================== */
:root{
  --primary:#00acED; --primary-d:#0090c8; --primary-dd:#005e82;
  --btn:#4aa8e8; --btn-d:#2f8fd6;
  --red:#ef4444; --orange:#f97316; --star:#f59e0b;
  --text:#111827; --muted:#6b7280; --line:#e5e7eb;
  --bg:#f5f7f4; --card:#fff; --radius:16px;
  --shadow:0 6px 24px rgba(15,60,100,.08);
  --container:1400px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--text);background:var(--bg);font-size:14px;line-height:1.5}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:12px;top:-48px;z-index:9999;background:#0f172a;color:#fff;padding:10px 16px;border-radius:8px;font-weight:700;transition:top .2s}
.skip-link:focus{top:12px;outline:2px solid #fff;outline-offset:2px}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,select{font-family:inherit;font-size:14px}
.container{max-width:var(--container);margin:0 auto;padding:0 16px}
svg.i{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ===== Ô ẢNH (thay bằng ảnh thật trong thư mục images/) ===== */
.ph{position:relative;overflow:hidden;background:
   repeating-linear-gradient(45deg,#eef4f9 0 12px,#e6eef6 12px 24px);}
.ph::before{content:attr(data-label);position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
   text-align:center;padding:6px;font-size:11px;color:#8aa0b5;font-weight:600}
.ph>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ph>img.contain{object-fit:contain;padding:8px}

/* ================== TOP PROMO ================== */
.promo{background:var(--primary-dd) linear-gradient(90deg,rgba(0,0,0,.35),transparent 25%,transparent 75%,rgba(0,0,0,.35));color:#fff;height:44px;display:flex;align-items:center;justify-content:center;gap:14px;font-weight:600;position:relative}
.promo .chip{background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:4px 14px;font-size:12px;letter-spacing:.3px}
.promo .x{position:absolute;right:16px;color:#fff;font-size:18px}

/* ================== TRUST BAR ================== */
.trustbar{background:var(--primary);color:#fff;font-size:12.5px;height:36px;border-bottom:1px solid rgba(255,255,255,.2)}
.trustbar .container{display:flex;justify-content:space-between;align-items:center;height:100%;gap:16px}
.trustbar .marquee{flex:1;overflow:hidden;white-space:nowrap;mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent)}
.trustbar .marquee-inner{display:inline-flex;gap:28px;animation:mq 28s linear infinite}
.trustbar .marquee span,.trustbar .links a{display:inline-flex;align-items:center;gap:6px}
.trustbar .links{display:flex;gap:20px;white-space:nowrap}
.trustbar svg.i{width:14px;height:14px}
@keyframes mq{to{transform:translateX(-50%)}}

/* ================== HEADER ================== */
.header{background:var(--primary);position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(0,0,0,.08)}
.header .container{display:flex;align-items:center;gap:18px;height:76px}
.logo{display:flex;align-items:center;gap:8px;color:#fff;font-weight:800;font-size:26px;letter-spacing:1px}
.logo .ph{width:130px;height:40px;background:transparent;border:1.5px dashed rgba(255,255,255,.6);border-radius:8px}
.logo .ph::before{color:#fff}
.btn-cat{display:flex;align-items:center;gap:8px;color:#fff;font-weight:600;font-size:15px;padding:8px 10px;border-radius:10px}
.btn-cat:hover{background:rgba(255,255,255,.15)}
.search{flex:1;max-width:420px;position:relative}
.search input{width:100%;height:44px;border-radius:999px;border:0;padding:0 46px 0 42px;outline:none}
.search .s1{position:absolute;left:14px;top:13px;color:#374151}
.search .s2{position:absolute;right:14px;top:13px;color:var(--primary)}
.hl{display:flex;align-items:center;gap:10px;color:#fff}
.hl .ic{width:38px;height:38px;border-radius:12px;background:rgba(255,255,255,.18);display:grid;place-items:center}
.hl small{display:block;font-size:11px;opacity:.9;line-height:1.1}
.hl b{font-size:16px;font-weight:700;letter-spacing:.3px}
.cart{color:#fff;position:relative;padding:6px}
.cart .badge{position:absolute;top:-2px;right:-4px;background:var(--red);font-size:10px;border-radius:999px;padding:0 5px;font-weight:700}
.region{display:flex;align-items:center;gap:6px;color:#fff;border:1px solid rgba(255,255,255,.55);border-radius:999px;padding:8px 14px;font-weight:600;white-space:nowrap}

/* ================== NAV ================== */
.nav{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:40}
.nav .container{display:flex;align-items:center;gap:6px;height:46px}
.nav-item{position:relative}
.nav-item>a{display:flex;align-items:center;gap:6px;padding:10px 12px;font-weight:600;font-size:13.5px;border-radius:8px;white-space:nowrap}
.nav-item>a:hover{color:var(--primary)}
.nav-item .dd{display:none;position:absolute;top:100%;left:0;background:#fff;border-radius:12px;box-shadow:var(--shadow);border:1px solid var(--line);min-width:230px;padding:8px}
.nav-item:hover .dd{display:block}
.dd a{display:block;padding:8px 12px;border-radius:8px;font-size:13.5px}
.dd a:hover{background:#eef8fd;color:var(--primary)}
.nav .act{margin-left:auto;background:var(--btn);color:#fff;border-radius:10px;padding:8px 14px;font-weight:600;display:flex;gap:6px;align-items:center;white-space:nowrap}

/* ================== MEGA MENU ================== */
.mega{position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:100;display:none}
.mega.open{display:block}
.mega-panel{position:absolute;top:0;left:0;bottom:0;width:340px;background:#fff;padding:20px;overflow:auto;animation:sl .25s}
@keyframes sl{from{transform:translateX(-100%)}}
.mega-panel h4{display:flex;justify-content:space-between;margin-bottom:12px;font-size:16px}
.mega-panel details{border-bottom:1px solid var(--line);padding:10px 0}
.mega-panel summary{font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between}
.mega-panel details a{display:block;padding:6px 10px;color:var(--muted)}

/* ================== HEADING STRIP ================== */
.home-heading{background:#fff;border-bottom:1px solid var(--line)}
.home-heading .container{display:flex;justify-content:space-between;align-items:center;height:46px}
.home-heading h1{font-size:16px;font-weight:700;border-left:3px solid var(--primary);padding-left:10px}
.home-heading a{color:var(--primary);font-weight:600;font-size:13px}

/* ================== MAIN (ảnh nền toàn trang) ================== */
main.home{position:relative;padding-bottom:30px;
  background:#9fd3f2 url("../images/bg-page.jpg") center top/cover fixed;}
main.home::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#bfe3f8 0%,#7cc3ee 40%,#4ea8e0 100%);z-index:0;opacity:var(--bg-fallback,1)}
main.home>*{position:relative;z-index:1}

/* ================== HERO + ADVISOR ================== */
.hero{position:relative;height:420px;margin-bottom:-200px;overflow:hidden}
.hero .ph{position:absolute;inset:0;background:transparent}
.hero .ph::before{align-items:flex-start;justify-content:flex-end;padding:30px 40px;color:rgba(255,255,255,.8)}
.hero .txt{position:relative;padding-top:56px;color:#fff;text-shadow:0 2px 10px rgba(0,60,100,.25)}
.hero .kicker{font-size:12px;letter-spacing:2.5px;font-weight:600;text-transform:uppercase;opacity:.95}
.hero h2{font-size:38px;font-weight:700;margin:10px 0 12px;line-height:1.2}
.hero p{max-width:440px;font-size:15px;opacity:.95}
.advisor{display:grid;grid-template-columns:1.05fr 1fr;background:#fff;border-radius:20px;box-shadow:0 20px 50px rgba(0,60,120,.15);overflow:hidden}
.adv-left{padding:28px;border-right:1px solid var(--line)}
.adv-left h3,.adv-right h3{font-size:20px;font-weight:700;line-height:1.3}
.adv-left>p,.adv-right>p{color:var(--muted);font-size:13px;margin:4px 0 16px}
.need{display:flex;align-items:center;gap:16px;border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:12px;transition:.2s}
.need:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.need .ic{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;flex:none}
.need .ic svg{width:24px;height:24px}
.need b{font-size:15px}
.need .cnt{display:inline-flex;gap:4px;align-items:center;background:#f1f5f9;border-radius:999px;padding:2px 10px;font-size:11.5px;font-weight:600;margin-left:8px;vertical-align:middle}
.need small{display:block;color:var(--muted);font-size:12.5px;margin-top:2px}
.need .go{margin-left:auto;background:#e8f5fd;color:var(--primary-d);font-weight:600;border-radius:999px;padding:7px 14px;font-size:12.5px;white-space:nowrap}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;background:#f8fafc;border-radius:14px;padding:16px}
.steps div{font-size:12px;color:var(--muted)}
.steps i{width:28px;height:28px;border-radius:50%;background:var(--btn);color:#fff;display:grid;place-items:center;font-style:normal;font-weight:700;margin-bottom:6px}
.steps b{display:block;color:var(--text);font-size:13px}
.adv-right{padding:28px;background:#fbfdff}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field label{display:block;font-size:12.5px;font-weight:600;margin-bottom:6px}
.field input,.field select{width:100%;height:44px;border:1px solid #d6dde6;border-radius:10px;padding:0 12px;background:#fff;outline:none}
.field input:focus,.field select:focus{border-color:var(--primary)}
.field.full{grid-column:1/-1}
.agree{display:flex;gap:8px;font-size:12.5px;color:var(--muted);margin:14px 0 22px;grid-column:1/-1}
.btn-main{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;height:46px;border-radius:999px;background:var(--btn);color:#fff;font-weight:600;font-size:14.5px;transition:.2s}
.btn-main:hover{background:var(--btn-d)}
.note{font-size:12px;color:var(--muted);margin-top:10px}

/* ================== QUICK CATEGORIES ================== */
.quick{margin:26px auto 22px;background:rgba(255,255,255,.92);border-radius:18px;padding:14px;display:grid;grid-template-columns:repeat(6,1fr);gap:10px;box-shadow:var(--shadow)}
.quick a{display:flex;align-items:center;gap:10px;padding:10px;border-radius:12px;font-weight:600;font-size:13.5px;line-height:1.25}
.quick a:hover{background:#eef8fd;color:var(--primary-d)}
.quick .ph{width:46px;height:46px;border-radius:12px;flex:none}

/* ================== SECTION BOX ================== */
.box{background:#fff;border-radius:20px;padding:26px;box-shadow:var(--shadow);margin-bottom:22px}
.sec-head{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.sec-head .ic{width:46px;height:46px;border-radius:12px;background:#eef8fd;color:var(--primary);display:grid;place-items:center;flex:none}
.sec-head .ic svg{width:24px;height:24px}
.sec-head h2{font-size:28px;font-weight:700;line-height:1.15}
.sec-head p{color:var(--muted);font-size:13px}
.sec-head .right{margin-left:auto}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.tab{border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-weight:600;font-size:13px;background:#fff}
.tab.active{background:var(--btn);color:#fff;border-color:var(--btn)}

/* Flash sale */
.flash{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:14px;padding:8px 14px}
.flash .lbl{font-size:12px;line-height:1.3}
.flash .lbl b{color:var(--primary);display:block;font-size:13px}
.cd{display:flex;align-items:center;gap:6px}
.cd div{text-align:center;font-size:10px;color:var(--muted)}
.cd span{display:block;background:var(--btn);color:#fff;font-weight:700;font-size:18px;width:38px;height:38px;border-radius:8px;display:grid;place-items:center;margin-bottom:2px}

/* ================== PRODUCT CARD ================== */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
#exGrid{grid-template-columns:repeat(4,1fr)}
.card{border:1px solid var(--line);border-radius:14px;padding:12px;display:flex;flex-direction:column;background:#fff;transition:.2s}
.card:hover{box-shadow:0 10px 30px rgba(0,80,140,.12);transform:translateY(-2px)}
.card .top{display:flex;justify-content:space-between;font-size:11px;font-weight:600}
.badge-new{background:#e8f5fd;color:var(--primary-d);padding:2px 8px;border-radius:6px}
.badge-off{background:#fee2e2;color:var(--red);padding:2px 8px;border-radius:6px}
.badge-stock{color:var(--primary-d);background:#e8f5fd;padding:2px 8px;border-radius:6px}
.card .ph{height:150px;border-radius:10px;margin:10px 0;background:#f8fafc}
.card .name{font-weight:700;font-size:13.5px;line-height:1.35;min-height:37px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .rate{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);margin:8px 0}
.card .rate b{color:var(--text)}
.card .rate .st{color:var(--star)}
.card .cmp{margin-left:auto;border:1px solid var(--line);border-radius:999px;padding:1px 8px;font-size:11px;color:var(--text)}
.price{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.price b{color:var(--red);font-size:19px;font-weight:800}
.price s{color:var(--muted);font-size:12.5px}
.save{color:var(--primary-d);font-size:12px;font-weight:600;margin-top:2px}
.tags{display:flex;gap:4px;flex-wrap:wrap;margin:10px 0}
.tags span{background:#f1f5f9;border-radius:6px;padding:2px 7px;font-size:11px}
.genuine{font-size:12px;font-weight:600;display:flex;gap:6px;align-items:center;color:#0f766e}
.stock{font-size:12px;color:var(--muted);margin-top:6px;display:flex;gap:6px;align-items:center}
.stock b{color:var(--orange)}
.bar{height:6px;border-radius:9px;background:#e5e7eb;margin:6px 0 10px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,#60a5fa,var(--btn))}
.card .acts{display:flex;gap:8px;margin-top:auto;padding-top:8px}
.buy{flex:1;background:var(--btn);color:#fff;border-radius:10px;padding:6px 8px;text-align:center;font-weight:700;font-size:13px;line-height:1.2}
.buy small{display:block;font-weight:500;font-size:10.5px;opacity:.9}
.buy:hover{background:var(--btn-d)}
.addcart{width:42px;border:1px solid var(--line);border-radius:10px;display:grid;place-items:center;color:var(--btn)}
.slider-wrap{position:relative}
.arrow{position:absolute;top:50%;transform:translateY(-50%);width:34px;height:34px;border-radius:50%;background:#fff;box-shadow:var(--shadow);display:grid;place-items:center;z-index:2;font-size:18px;color:#334155}
.arrow.l{left:-16px}.arrow.r{right:-16px}

/* ================== PROMO BANNER SLIDER ================== */
.banner{position:relative;border-radius:20px;overflow:hidden;height:320px;margin-bottom:22px;box-shadow:var(--shadow)}
.banner .slides{display:flex;height:100%;transition:transform .5s}
.banner .slide{min-width:100%;height:100%;border-radius:0}
.banner .arrow{background:rgba(255,255,255,.8)}
.banner .arrow.l{left:14px}.banner .arrow.r{right:14px}
.dots{display:flex;gap:6px;justify-content:center;margin-top:10px}
.dots i{width:7px;height:7px;border-radius:9px;background:#cbd5e1;cursor:pointer;transition:.2s}
.dots i.on{width:22px;background:var(--btn)}
.banner .dots{position:absolute;bottom:12px;left:0;right:0}

/* ================== EXCLUSIVE ================== */
.excl{display:grid;grid-template-columns:340px 1fr;gap:18px}
.excl .poster{border-radius:16px;min-height:640px}

/* ================== PROJECTS ================== */
.proj-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:18px}
.cta-box{margin-left:auto;background:var(--btn);color:#fff;border-radius:12px;padding:12px 18px;display:flex;gap:10px;align-items:center;max-width:360px}
.cta-box b{display:block}.cta-box small{opacity:.9;font-size:12px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}
.stat{border:1px solid var(--line);border-radius:14px;padding:14px;display:flex;gap:12px;align-items:center}
.stat .ic{width:42px;height:42px;border-radius:12px;background:#f1f5f9;display:grid;place-items:center}
.stat strong{font-size:26px;color:var(--primary);font-weight:800;line-height:1}
.stat b{display:block;font-size:13px}.stat small{color:var(--muted);font-size:11.5px}
.proj{border:1px solid var(--line);border-radius:14px;padding:10px;display:flex;gap:12px}
.proj .ph{width:130px;height:110px;border-radius:10px;flex:none}
.proj .tag{background:#e8f5fd;color:var(--primary-d);font-size:10.5px;font-weight:700;padding:2px 8px;border-radius:6px;text-transform:uppercase}
.proj h4{font-size:14px;margin:6px 0;line-height:1.3}
.proj p{font-size:12px;color:var(--muted);display:flex;gap:4px}
.consult-banner{margin-top:18px;border-radius:16px;height:150px}

/* ================== TRUST / AUTHORIZED ================== */
.center-head{text-align:center;margin-bottom:20px}
.center-head h2{font-size:32px;font-weight:800;text-transform:uppercase}
.center-head p{color:var(--muted)}
.inner-card{border:1px solid var(--line);border-radius:16px;padding:22px;margin-bottom:16px}
.inner-card h3{display:flex;gap:10px;align-items:center;color:var(--primary-d);font-size:15px;text-transform:uppercase;margin-bottom:12px}
.checks{list-style:none;margin:14px 0 18px}
.checks li{display:flex;gap:8px;align-items:center;margin-bottom:8px;font-size:13.5px}
.checks li svg{color:var(--primary)}
.two-btn{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.btn-out{display:flex;align-items:center;justify-content:center;gap:8px;height:44px;border:1px solid var(--btn);color:var(--btn-d);border-radius:10px;font-weight:600}
.btn-fill{display:flex;align-items:center;justify-content:center;gap:8px;height:44px;background:var(--btn);color:#fff;border-radius:10px;font-weight:600}
.cert{display:grid;grid-template-columns:1fr 230px;gap:16px}
.cert .ph{border-radius:12px;min-height:420px}
.cert-side{border:1px solid var(--line);border-radius:12px;padding:18px;display:flex;flex-direction:column;justify-content:center;gap:18px}
.cert-side .row{display:flex;gap:10px;align-items:center}
.cert-side .row .ic{width:38px;height:38px;border-radius:50%;background:#eef8fd;color:var(--primary);display:grid;place-items:center}
.cert-side small{color:var(--muted);font-size:12px;display:block}
.cert-side b{color:var(--primary-d)}
.feat4{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.feat4 div{border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;gap:12px}
.feat4 .ic{width:42px;height:42px;border-radius:12px;background:#eef8fd;color:var(--primary);display:grid;place-items:center;flex:none}
.feat4 b{display:block}.feat4 small{color:var(--muted);font-size:12px}

/* ================== NEWS & VIDEO ================== */
.sub-head{display:flex;justify-content:space-between;align-items:center;margin:8px 0 12px}
.sub-head b{font-size:15px}
.sub-head a{color:var(--primary-d);font-weight:600;font-size:13px}
.news{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.post{border:1px solid var(--line);border-radius:14px;overflow:hidden}
.post .ph{height:200px}
.post .tg{position:absolute;top:12px;left:12px;background:var(--btn);color:#fff;font-size:11px;padding:3px 10px;border-radius:6px;z-index:2;font-weight:600}
.post .bd{padding:14px}
.post .dt{font-size:12px;color:var(--muted);display:flex;gap:6px;align-items:center}
.post h4{font-size:16px;margin:6px 0;line-height:1.35}
.post p{font-size:12.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post .more{color:var(--primary-d);font-weight:600;font-size:13px;display:inline-block;margin-top:10px}
.video{border:1px solid var(--line);border-radius:14px;overflow:hidden}
.video .ph{height:320px}
.play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:66px;height:66px;border-radius:50%;background:rgba(255,255,255,.95);display:grid;place-items:center;z-index:2;box-shadow:0 6px 20px rgba(0,0,0,.2);color:var(--btn)}
.video .bd{padding:16px}
.video h4{font-size:18px;margin-bottom:6px}
.video p{font-size:13px;color:var(--muted)}

/* ================== SEO BLOCK ================== */
.seo{background:#fff;border-radius:20px;padding:26px;display:grid;grid-template-columns:1.4fr 1fr;gap:24px;box-shadow:var(--shadow)}
.seo .k{color:var(--primary-d);font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase}
.seo h3{font-size:19px;margin:4px 0 10px}
.seo p{font-size:13px;color:#374151}
.seo .links{display:grid;grid-template-columns:1fr 1fr;gap:8px;align-content:start}
.seo .links a{border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:12.5px;color:var(--primary-d);font-weight:500}
.faq{margin-top:18px;grid-column:1/-1}
.faq details{border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:8px}
.faq summary{font-weight:600;cursor:pointer}
.faq p{margin-top:8px;color:var(--muted)}

/* ================== FOOTER ================== */
footer{background:linear-gradient(rgba(255,255,255,.96),rgba(248,250,247,.96));padding-top:26px}
.f-feat{display:grid;grid-template-columns:repeat(2,1fr);gap:0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:8px;margin-bottom:20px}
.f-feat div{display:flex;gap:14px;align-items:center;padding:18px}
.f-feat div:nth-child(odd){border-right:1px solid var(--line)}
.f-feat div:nth-child(-n+2){border-bottom:1px solid var(--line)}
.f-feat .ic{width:44px;height:44px;border-radius:12px;background:#eef8fd;color:var(--primary);display:grid;place-items:center;flex:none}
.f-feat b{display:block}.f-feat small{color:var(--muted);font-size:12px}
.showroom{border:1px solid var(--line);border-radius:18px;padding:22px;background:#fff;margin-bottom:20px}
.sr-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.sr{border:1px solid var(--line);border-radius:12px;padding:14px;font-size:13px}
.sr .hd{display:flex;justify-content:space-between;font-weight:700;font-size:12.5px;margin-bottom:8px}
.sr .main-tag{color:var(--red);border:1px solid #fecaca;border-radius:6px;padding:0 6px;font-size:10.5px;font-weight:600}
.sr p{display:flex;gap:8px;align-items:center;margin-bottom:6px}
.sr p.lk{color:var(--primary-d);font-weight:600}
.sr svg.i{width:14px;height:14px;color:var(--muted)}
.btn-ghost{display:flex;margin:14px auto 0;width:max-content;border:1px solid var(--btn);color:var(--btn-d);border-radius:10px;padding:9px 20px;font-weight:600;gap:6px;align-items:center}
.f-main{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;display:grid;grid-template-columns:1fr 1fr;gap:24px 30px;margin-bottom:24px}
.f-main h4{font-size:14px;padding-bottom:8px;border-bottom:1px solid var(--line);margin-bottom:12px;position:relative}
.f-main h4::after{content:"";position:absolute;left:0;bottom:-1px;width:40px;height:2px;background:var(--primary)}
.hot{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:8px}
.hot .ic{width:34px;height:34px;border-radius:8px;background:#eef8fd;color:var(--primary);display:grid;place-items:center}
.hot small{display:block;font-size:11.5px;color:var(--muted)}
.hot b{color:var(--primary-d)}
.hot em{margin-left:auto;font-style:normal;font-size:11.5px;color:var(--muted)}
.auth{border:1px solid var(--line);border-radius:12px;padding:16px;background:#f8fbff}
.auth b{color:var(--primary-d);display:flex;gap:8px;align-items:center;margin-bottom:8px}
.auth p{font-size:12.5px;color:var(--muted);margin-bottom:12px}
.f-main ul{list-style:none}
.f-main li{padding:5px 0;font-size:13px}
.f-main li::before{content:"•";color:var(--primary);margin-right:8px}
.f-main li a:hover{color:var(--primary)}
.copy{border-top:1px solid var(--line);padding:20px 0;font-size:12px;color:var(--muted)}
.copy .ph{width:150px;height:44px;border-radius:8px;margin-bottom:10px}
.copy .row{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:12px}
.copy .row span{display:flex;gap:6px;align-items:center}
.copy svg.i{width:13px;height:13px}

/* ================== FLOATING ================== */
.float-contact{position:fixed;right:16px;bottom:24px;z-index:60;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.fc-call{background:#fff;border-radius:14px;padding:6px 14px;text-align:center;box-shadow:var(--shadow)}
.fc-call small{display:block;font-size:10.5px;color:var(--primary-d);font-weight:700;letter-spacing:1px}
.fc-call b{font-size:15px}
.fc-btn{width:50px;height:50px;border-radius:50%;background:var(--btn);color:#fff;display:grid;place-items:center;box-shadow:0 6px 16px rgba(47,143,214,.45);animation:pulse 2s infinite;margin-right:4px}
.fc-chat{background:#fff;border-radius:14px;padding:6px 14px;font-size:10.5px;color:var(--primary-d);font-weight:700;letter-spacing:1px;box-shadow:var(--shadow)}
.fc-zalo{width:50px;height:50px;border-radius:50%;background:#0068ff;color:#fff;display:grid;place-items:center;font-weight:700;font-size:13px;margin-right:4px}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(74,168,232,.6)}70%{box-shadow:0 0 0 14px rgba(74,168,232,0)}100%{box-shadow:0 0 0 0 rgba(74,168,232,0)}}
.survey-fab{position:fixed;left:16px;bottom:24px;z-index:60;background:var(--btn);color:#fff;border-radius:999px;padding:10px 18px;font-weight:600;display:flex;gap:8px;align-items:center;box-shadow:0 6px 16px rgba(47,143,214,.4)}

/* ================== RESPONSIVE ================== */
@media(max-width:1100px){
  #exGrid{grid-template-columns:repeat(3,1fr)}
  .hl.warranty,.region{display:none}
  .grid{grid-template-columns:repeat(3,1fr)}
  .quick{grid-template-columns:repeat(3,1fr)}
  .excl{grid-template-columns:1fr}.excl .poster{min-height:300px}
}
@media(max-width:820px){
  .trustbar .links,.nav,.hl{display:none}
  .header .container{height:64px;gap:10px}
  .search{max-width:none}
  .btn-cat span{display:none}
  .hero{height:360px}.hero h2{font-size:26px}
  .advisor,.form-grid,.cert,.seo,.f-main,.news,.sr-grid{grid-template-columns:1fr}
  .adv-left{border-right:0;border-bottom:1px solid var(--line)}
  .grid,.grid.c3,#exGrid,.stats,.feat4{grid-template-columns:repeat(2,1fr)}
  .sec-head h2,.center-head h2{font-size:22px}
  .sec-head{flex-wrap:wrap}.sec-head .right{margin-left:0}
  .proj-head{flex-direction:column}.cta-box{margin-left:0}
  .f-feat{grid-template-columns:1fr}.f-feat div{border-right:0!important}
  .promo{font-size:12px}.promo .chip{display:none}
  .banner{height:180px}
}
@media(max-width:480px){
  .grid,.grid.c3,#exGrid{grid-template-columns:1fr 1fr;gap:8px}
  .card{padding:8px}.card .ph{height:110px}.price b{font-size:15px}
  .quick{grid-template-columns:repeat(2,1fr)}
  .logo .ph{width:90px}
}

/* =====================================================================
   PHẦN BỔ SUNG CHO WEBSITE NHIỀU TRANG
   ===================================================================== */
body.lock{overflow:hidden}
.nav-item>a .nimg{width:18px;height:22px;object-fit:contain;flex:none}
.nav-item>a .nimg-fb{width:16px;height:16px;color:#94a3b8}
.btn-cat.on{background:rgba(255,255,255,.22)}

/* ----- Mega menu (thả xuống dưới header) ----- */
.mega{position:fixed;inset:0;top:var(--mega-top,120px);background:rgba(15,23,42,.35);z-index:45;display:none}
.mega.open{display:block}
.mega-box{max-width:var(--container);margin:0 auto;background:#fff;border-radius:0 0 18px 18px;display:grid;grid-template-columns:300px 1fr;height:min(620px,calc(100vh - var(--mega-top,120px) - 20px));overflow:hidden;box-shadow:0 20px 40px rgba(0,0,0,.15);animation:dn .2s}
@keyframes dn{from{opacity:0;transform:translateY(-8px)}}
.mega-left{background:#f5f7fb;border-right:1px solid var(--line);overflow:auto}
.mega-left a{display:flex;justify-content:space-between;align-items:center;padding:16px 22px;border-bottom:1px solid #e8ecf2;font-size:15px;font-weight:500}
.mega-left a.on{background:#fff;color:var(--btn-d);font-weight:700}
.mega-left a .ar{opacity:0}.mega-left a.on .ar{opacity:1}
.mega-right{padding:22px 26px;overflow:auto}
.mega-right h4{color:var(--btn-d);font-size:18px;margin-bottom:16px}
.mega-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px 14px}
.mega-grid a{text-align:center;font-size:14px;font-weight:500;line-height:1.3}
.mega-grid a .ph{width:110px;height:110px;margin:0 auto 10px;border-radius:14px;background:#f5f7fb}
.mega-grid a:hover{color:var(--btn-d)}
.mega-grid a:hover .ph{box-shadow:0 0 0 2px var(--btn)}
.mega-panel{display:none}
@media(max-width:820px){
  .mega{top:0;background:rgba(0,0,0,.4)}
  .mega-box{grid-template-columns:1fr;height:100%;border-radius:0;max-width:none;width:88%;}
  .mega-left{display:block}.mega-right{display:none}
  .mega-left .msub{display:none;padding:8px 16px 14px;background:#fff}
  .mega-left a.on+.msub{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .mega-left .msub a{border:0;padding:8px;font-size:13px;background:#f5f7fb;border-radius:8px}
}
@media(min-width:821px){.mega-left .msub{display:none!important}}

/* ----- Modal chung ----- */
.modal-bg{position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:200;display:none;align-items:center;justify-content:center;padding:20px}
.modal-bg.open{display:flex}
.modal{background:#fff;border-radius:22px;width:100%;max-width:760px;max-height:92vh;display:flex;flex-direction:column;overflow:hidden;animation:pop .2s;box-shadow:0 30px 60px rgba(0,0,0,.25)}
@keyframes pop{from{opacity:0;transform:scale(.96)}}
.modal-hd{padding:18px 24px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:center;position:relative}
.modal-hd h3{font-size:20px}
.modal-x{position:absolute;right:16px;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:50%;background:#f1f5f9;font-size:18px;display:grid;place-items:center}
.modal-x.plain{position:static;transform:none;background:#fff;border:1px solid var(--line)}
.modal-bd{padding:20px 24px;overflow:auto;flex:1}
.modal-ft{padding:16px 24px;border-top:1px solid var(--line);display:flex;gap:12px;justify-content:flex-end}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:12px;font-weight:600;font-size:15px;transition:.2s;white-space:nowrap}
.btn-p{background:var(--btn);color:#fff}.btn-p:hover{background:var(--btn-d)}
.btn-p:disabled{background:#cbd5e1;cursor:not-allowed}
.btn-o{border:1px solid var(--line);background:#fff;color:var(--text)}.btn-o:hover{border-color:var(--btn)}
.btn-ob{border:1px solid var(--btn);background:#fff;color:var(--btn-d)}
.btn.block{width:100%}

/* region modal */
.rg-sel{background:#f8fafc;border:1px solid var(--line);border-radius:16px;padding:16px 20px;margin-bottom:18px}
.rg-sel .hd{display:flex;justify-content:space-between;font-weight:700;color:#334155;margin-bottom:10px}
.rg-sel .hd a{color:var(--btn-d)}
.rg-step{display:flex;gap:14px;position:relative;padding:6px 0}
.rg-step i{width:16px;height:16px;border-radius:50%;border:3px solid #cbd5e1;background:#fff;margin-top:4px;flex:none;z-index:1}
.rg-step.done i{border-color:var(--btn);background:var(--btn)}
.rg-step b{display:block}.rg-step small{color:var(--muted)}
.rg-step:first-of-type::after{content:"";position:absolute;left:7px;top:22px;bottom:-14px;width:2px;background:#cbd5e1}
.inp{width:100%;height:48px;border:1px solid #d6dde6;border-radius:12px;padding:0 16px;font-size:14.5px;outline:none;background:#fff}
.inp:focus{border-color:var(--btn);box-shadow:0 0 0 3px rgba(74,168,232,.15)}
textarea.inp{height:auto;padding:12px 16px;resize:vertical;min-height:100px}
.lbl{display:block;font-weight:600;margin:0 0 8px;font-size:13.5px}
.inp-ic{position:relative}.inp-ic svg{position:absolute;right:14px;top:15px;color:var(--muted)}
.rg-list{display:flex;flex-direction:column;gap:8px;max-height:300px;overflow:auto;padding-right:4px;margin-top:8px}
.rg-list button{display:flex;justify-content:space-between;align-items:center;border:1px solid var(--line);border-radius:12px;padding:14px 16px;font-size:15px;font-weight:600;text-align:left;background:#fff}
.rg-list button small{color:var(--muted);font-weight:500;font-size:13px}
.rg-list button:hover,.rg-list button.on{border-color:var(--btn);background:#f0f8fe}

/* variant modal */
.vm-head{border:1px solid var(--line);border-radius:18px;padding:16px;display:flex;gap:18px;align-items:center;margin-bottom:18px;background:#fafcff}
.vm-head .ph{width:90px;height:90px;border-radius:12px;flex:none}
.vm-head b{font-size:18px;display:block;line-height:1.3}
.vm-head small{color:var(--muted)}
.vm-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.vopt{border:1.5px solid var(--line);border-radius:16px;padding:14px;display:flex;gap:14px;align-items:center;text-align:left;background:#fff;position:relative}
.vopt .ph{width:62px;height:62px;border-radius:12px;flex:none;background:#f8fafc}
.vopt b{display:block;font-size:14px;line-height:1.35}
.vopt .pr{color:var(--btn-d);font-weight:700;margin:4px 0 2px}
.vopt small{color:var(--muted)}
.vopt .dot{position:absolute;right:16px;top:50%;transform:translateY(-50%);width:24px;height:24px;border-radius:50%;border:2px solid #cbd5e1}
.vopt.on{border-color:var(--btn);background:#f6fbf6}
.vopt.on .dot{border:0;background:var(--btn)}
.vm-hdl{display:flex;justify-content:space-between;align-items:flex-start;padding:22px 24px 6px}
.vm-hdl h3{font-size:24px}.vm-hdl p{color:var(--muted)}

/* toast */
.toast{position:fixed;left:50%;top:90px;transform:translateX(-50%) translateY(-20px);background:#0f172a;color:#fff;padding:12px 20px;border-radius:12px;z-index:300;opacity:0;transition:.3s;pointer-events:none;font-weight:500;display:flex;gap:8px;align-items:center}
.toast.show{opacity:1;transform:translateX(-50%)}

/* compare bar */
.cmp-bar{position:fixed;left:50%;bottom:16px;transform:translateX(-50%);z-index:70;background:#fff;border-radius:18px;box-shadow:0 10px 40px rgba(0,0,0,.18);padding:12px 16px;display:none;align-items:center;gap:14px;max-width:calc(100% - 200px)}
.cmp-bar.show{display:flex}
.cmp-bar .t b{display:block}.cmp-bar .t small{color:var(--muted);font-size:12px}
.cmp-items{display:flex;gap:10px}
.cmp-it{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:12px;padding:6px 10px;width:200px}
.cmp-it .ph{width:34px;height:34px;border-radius:8px;flex:none}
.cmp-it span{font-size:12px;font-weight:600;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.3}
.cmp-it button{margin-left:auto;color:var(--muted)}
.cmp.on{background:#e8f5fd;border-color:var(--btn);color:var(--btn-d)}
@media(max-width:820px){.cmp-bar{max-width:calc(100% - 24px);left:12px;transform:none;right:12px;flex-wrap:wrap}.cmp-items{display:none}}

/* showroom 4 cột + carousel */
.sr-head{display:flex;align-items:center;gap:14px;margin-bottom:18px;flex-wrap:wrap}
.sr-head .tabs{margin:0 0 0 auto}
.sr-wrap{position:relative}
.sr-grid{grid-template-columns:repeat(4,1fr)!important}
.sr{padding:0;overflow:hidden}
.sr .hd{padding:14px 16px;border-bottom:1px solid var(--line);margin:0;align-items:center}
.sr .bd{padding:12px 16px}
.sr.main{border-color:#9fd2f3;box-shadow:0 0 0 1px #c7e6fa}
.sr-wrap .arrow.l{left:-22px}.sr-wrap .arrow.r{right:-22px}
@media(max-width:1100px){.sr-grid{grid-template-columns:repeat(2,1fr)!important}}
@media(max-width:600px){.sr-grid{grid-template-columns:1fr!important}}

/* footer 4 cột */
.f-main{grid-template-columns:1.15fr 1fr .9fr 1fr!important}
.f-main>div+div{border-left:1px solid var(--line);padding-left:26px}
@media(max-width:1100px){.f-main{grid-template-columns:1fr 1fr!important}.f-main>div:nth-child(3){border-left:0;padding-left:0}}
@media(max-width:820px){.f-main{grid-template-columns:1fr!important}.f-main>div+div{border-left:0;padding-left:0}}

/* ----- Trang con ----- */
.page-bg{background:#9fd3f2 url("../images/bg-page.jpg") center top/cover fixed;padding:16px 0 40px;min-height:60vh}
.page-bg.nobg{background:linear-gradient(180deg,#bfe3f8 0%,#7cc3ee 40%,#4ea8e0 100%) fixed}
.crumb{background:#fff;border-radius:12px;padding:10px 16px;font-size:13px;color:var(--muted);margin-bottom:16px;display:flex;gap:8px;flex-wrap:wrap;box-shadow:var(--shadow)}
.crumb a:hover{color:var(--btn-d)}.crumb b{color:var(--text);background:#f1f5f9;padding:0 8px;border-radius:6px}
.wbox{background:#fff;border-radius:20px;box-shadow:var(--shadow);padding:22px;margin-bottom:16px}
.wbox>h3{font-size:18px;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.wbox>h3 .sub{font-weight:500;color:var(--muted);font-size:13px;margin-left:auto}

/* ----- Trang chi tiết sản phẩm ----- */
.pd{display:grid;grid-template-columns:minmax(0,1fr) 430px;gap:16px;align-items:start}
.pd-right{position:sticky;top:132px}
.gal-main{position:relative;height:440px;border-radius:16px;background:#fff}
.gal-main .ph{position:absolute;inset:0;border-radius:16px;background:#f8fafc}
.gal-main .arrow.l{left:12px}.gal-main .arrow.r{right:12px}
.gal-count{position:absolute;right:14px;bottom:12px;background:rgba(255,255,255,.9);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600;z-index:2}
.gal-thumbs{display:flex;gap:10px;margin-top:12px}
.gal-thumbs .ph{width:84px;height:84px;border-radius:12px;cursor:pointer;border:2px solid transparent;background:#f8fafc}
.gal-thumbs .ph.on{border-color:var(--btn)}
.docs{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.doc{display:flex;gap:10px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:10px 14px}
.doc b{font-size:13px;display:block}.doc small{color:var(--muted);font-size:11.5px}
.doc em{margin-left:auto;font-style:normal;font-size:11px;font-weight:700;color:var(--muted);background:#f1f5f9;border-radius:6px;padding:2px 6px}
.commit{display:grid;grid-template-columns:1fr 1fr;gap:16px 24px}
.commit div{display:flex;gap:10px}
.commit svg{color:var(--btn-d);margin-top:2px}
.commit b{display:block;font-size:13.5px}.commit small{color:var(--muted);font-size:12.5px}
.pd-tabs{position:sticky;top:126px;z-index:20;background:#fff;border-radius:14px;box-shadow:var(--shadow);display:flex;gap:4px;padding:6px 10px;margin-bottom:16px;overflow:auto}
.pd-tabs a{padding:8px 12px;font-weight:600;font-size:13.5px;border-bottom:2px solid transparent;white-space:nowrap}
.pd-tabs a.on{border-color:var(--btn);color:var(--btn-d)}
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 28px}
.spec h4{font-size:14px;margin-bottom:6px;color:#334155}
.spec table{width:100%;border-collapse:collapse;font-size:13px}
.spec td{padding:9px 10px;border-bottom:1px solid #eef1f5;vertical-align:top}
.spec tr:nth-child(odd) td{background:#f8fafc}
.spec td:first-child{color:var(--muted);width:42%}
.spec.full{grid-column:1/-1}
.desc{position:relative;max-height:520px;overflow:hidden}
.desc.open{max-height:none}
.desc:not(.open)::after{content:"";position:absolute;left:0;right:0;bottom:0;height:120px;background:linear-gradient(transparent,#fff)}
.desc p{margin-bottom:12px;font-size:14px}
.desc .ph{height:340px;border-radius:14px;margin:12px 0}
.cores .row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid #eef1f5}
.cores .ph{width:40px;height:40px;border-radius:8px;flex:none}
.cores b{font-size:13.5px;display:block}.cores small{color:var(--muted);font-size:12px}
.cores .pr{margin-left:auto;font-weight:700}
.cores .tot{display:flex;justify-content:space-between;font-weight:700;padding:12px 0 6px}
.faq-list details{border-bottom:1px solid #eef1f5;padding:12px 0}
.faq-list summary{font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;font-size:14px}
.faq-list summary::after{content:"⌄";color:var(--muted)}
.faq-list p{color:var(--muted);margin-top:8px;font-size:13.5px}
.qa{border-bottom:1px solid #eef1f5;padding:14px 0}
.qa b{display:block;font-size:14px}.qa small{color:var(--muted);font-size:12px}
.qa .ans,.rv .ans{background:#f8fafc;border-left:3px solid var(--btn);border-radius:8px;padding:10px 14px;margin-top:10px;font-size:13px}
.qa .ans b,.rv .ans b{font-size:12.5px}
.rv-sum{display:grid;grid-template-columns:200px 1fr;gap:20px;align-items:center;margin-bottom:16px}
.rv-sum .big{font-size:42px;font-weight:800;line-height:1}
.stars{color:var(--star);letter-spacing:2px}
.rv-bar{display:flex;align-items:center;gap:10px;font-size:12px;margin:4px 0}
.rv-bar .bar{flex:1;margin:0}
.rv-bar .bar i{background:var(--star)}
.rv{border-bottom:1px solid #eef1f5;padding:14px 0;font-size:13.5px}
.rv .who{display:flex;gap:8px;align-items:center;margin-bottom:6px}
.rv .who small{color:var(--muted)}
.rel{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.rel .card .name{min-height:0}
.rel .gb{font-size:13px;margin:6px 0 10px}.rel .gb b{color:var(--red)}
/* right panel */
.pr-box h1{font-size:22px;line-height:1.3;margin-bottom:10px}
.pr-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;align-items:center;margin-bottom:14px}
.pr-meta span{background:#f1f5f9;border-radius:6px;padding:2px 8px}
.pr-price{border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:12px}
.pr-price .row1{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}
.pr-price .instock{color:#16a34a;font-weight:600}
.pr-price .big{font-size:30px;font-weight:800;margin:4px 0}
.pr-price .old{font-size:12.5px;color:var(--muted)}.pr-price .old s{margin-right:8px}.pr-price .old b{color:var(--red)}
.pr-sec{margin-top:12px}
.pr-sec>small{display:block;color:#475569;font-weight:600;font-size:12.5px;margin-bottom:6px}
.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.seg button{border:1px solid var(--line);border-radius:10px;padding:8px;font-size:13px;font-weight:500;background:#fff}
.seg button.on{border-color:var(--text);font-weight:700;box-shadow:inset 0 0 0 1px var(--text)}
.note-box{background:#eef7fe;border-radius:12px;padding:10px 12px;font-size:12.5px;margin-top:10px;display:flex;gap:8px;color:#0c4a6e}
.note-box a{color:var(--btn-d);font-weight:700;text-decoration:underline}
.opt2{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.opt2 button{border:1px solid var(--line);border-radius:12px;padding:8px 10px;display:flex;gap:8px;align-items:center;text-align:left;background:#fff}
.opt2 button .ph{width:34px;height:34px;border-radius:8px;flex:none}
.opt2 button b{display:block;font-size:12.5px;line-height:1.3}.opt2 button small{color:var(--muted);font-size:11px}
.opt2 button.on{border-color:var(--text);box-shadow:inset 0 0 0 1px var(--text)}
.opt2 button.dis{opacity:.45}
.promo-box{border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-top:12px}
.promo-box .hd{background:#eef7fe;padding:10px 14px;display:flex;justify-content:space-between;font-size:13px}
.promo-box .hd b{color:var(--btn-d)}
.promo-box .it{display:flex;gap:10px;align-items:center;padding:8px 14px;font-size:12.5px;border-top:1px solid #f1f5f9}
.promo-box .it .ph{width:30px;height:30px;border-radius:6px;flex:none}
.promo-box .it small{display:block;color:var(--muted);font-size:11px}
.qty-row{display:flex;justify-content:space-between;align-items:center;margin:14px 0}
.qty{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;height:38px}
.qty button{width:36px;font-size:16px}
.qty input{width:44px;border:0;border-left:1px solid var(--line);border-right:1px solid var(--line);text-align:center;font-weight:600;outline:none}
.pr-links{font-size:12.5px;margin-top:12px;display:flex;flex-direction:column;gap:8px}
.pr-links a,.pr-links span{display:flex;gap:8px;align-items:center}
.pr-links svg{width:15px;height:15px;color:var(--muted)}
.proj-quote{background:#f1f5f9;border-radius:12px;padding:12px;margin-top:12px;font-size:12.5px}
.proj-quote b{display:block}.proj-quote .btn{height:38px;margin-top:8px;font-size:13px;width:100%}
.sticky-info{position:fixed;left:0;right:0;bottom:0;z-index:55;background:#fff;box-shadow:0 -6px 24px rgba(0,0,0,.08);transform:translateY(100%);transition:.3s}
.sticky-info.show{transform:none}
.sticky-info .container{display:flex;align-items:center;gap:16px;height:64px}
.sticky-info .ph{width:44px;height:44px;border-radius:8px}
.sticky-info b{font-size:14px}.sticky-info .pr{color:var(--red);font-weight:800;margin-left:auto;font-size:18px}
@media(max-width:1100px){.pd{grid-template-columns:1fr}.pd-right{position:static}.rel{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.docs,.commit,.spec-grid,.rv-sum{grid-template-columns:1fr}.gal-main{height:300px}.pd-tabs{top:64px}.sticky-info{display:none}}

/* ----- Giỏ hàng / thanh toán ----- */
.co{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:20px;align-items:start}
.co-right{position:sticky;top:132px}
.back{color:var(--btn-d);font-weight:600;display:inline-flex;gap:6px;align-items:center;margin-bottom:14px}
.cbox{border:1px solid var(--line);border-radius:18px;padding:20px;margin-bottom:16px;background:#fff}
.cbox>h3{display:flex;gap:10px;align-items:center;font-size:17px;margin-bottom:14px}
.cbox>h3 svg{color:#cbd5e1;width:22px;height:22px}
.chk{width:20px;height:20px;accent-color:var(--btn);cursor:pointer;flex:none}
.ci-head{display:flex;align-items:center;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line);font-weight:600}
.ci-head .ib{margin-left:auto}
.ib{width:38px;height:38px;border-radius:10px;background:#f8fafc;display:grid;place-items:center;color:var(--muted)}
.ib:hover{color:var(--red)}
.ci{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid #f1f5f9}
.ci:last-child{border-bottom:0;padding-bottom:0}
.ci .ph{width:76px;height:76px;border-radius:12px;flex:none;background:#f8fafc}
.ci .info{flex:1;min-width:0}
.ci .info b{display:block;font-size:14.5px;margin-bottom:6px}
.ci .info .row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.ci select{height:36px;border:1px solid var(--line);border-radius:999px;padding:0 12px;font-weight:600;max-width:280px;background:#fff}
.pill{background:#f1f5f9;border-radius:999px;padding:6px 12px;font-size:12.5px;font-weight:600}
.ci .pr{color:var(--red);font-weight:700;font-size:16px;white-space:nowrap}
.empty{text-align:center;padding:40px 10px;color:var(--muted)}
.empty svg{width:56px;height:56px;color:#cbd5e1;margin-bottom:8px}
.fg{display:grid;gap:12px}
.fg3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.fg2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.chips{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.chip-b{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;padding:10px 18px;font-weight:600;background:#fff}
.chip-b.on{border-color:var(--btn);color:var(--btn-d);background:#f0f8fe}
.addr-prev{background:#f8fafc;border:1px solid var(--line);border-radius:12px;padding:12px 16px;display:flex;gap:8px;align-items:center;font-weight:600;font-size:14px}
.addr-prev svg{color:var(--btn)}
.cnt-txt{font-size:12px;color:var(--muted);margin-top:4px}
.switch{position:relative;width:52px;height:30px;flex:none}
.switch input{opacity:0;width:0;height:0}
.switch span{position:absolute;inset:0;background:#e5e7eb;border-radius:999px;transition:.2s;cursor:pointer}
.switch span::before{content:"";position:absolute;width:24px;height:24px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch input:checked+span{background:var(--btn)}
.switch input:checked+span::before{transform:translateX(22px)}
.pay{display:flex;gap:14px;align-items:center;border:1px solid var(--line);border-radius:14px;padding:14px 18px;margin-bottom:10px;cursor:pointer}
.pay input{width:22px;height:22px;accent-color:var(--btn);flex:none}
.pay .ic{width:46px;height:46px;border-radius:12px;background:#eef7fe;color:var(--btn-d);display:grid;place-items:center;flex:none}
.pay b{display:block}.pay small{color:var(--muted);font-size:13px}
.pay.on{border-color:var(--btn);background:#f3f9fe}
.sum .r{display:flex;justify-content:space-between;padding:6px 0;font-size:14px}
.sum .r span{color:#475569}
.sum .r b{font-weight:600}
.sum .tt{border-top:1px solid var(--line);margin-top:8px;padding-top:12px}
.sum .tt b{color:var(--red);font-size:20px}
.sum .cp{display:flex;gap:8px;margin:8px 0 14px}
.sum .cp .btn{height:48px;padding:0 18px}
.sum .agree2{display:flex;gap:10px;font-size:12.5px;margin-top:12px;color:#475569}
.sum .agree2 a{color:var(--btn-d);font-weight:700}
.btn-big{height:54px;font-size:16px;border-radius:999px;background:linear-gradient(90deg,#4aa8e8,#2f8fd6);box-shadow:0 8px 20px rgba(47,143,214,.35)}
.ok-ic{width:72px;height:72px;border-radius:50%;background:#dcfce7;color:#16a34a;display:grid;place-items:center;margin:0 auto 12px}
.ok-ic svg{width:36px;height:36px}
.qr{width:200px;height:200px;margin:12px auto;border-radius:12px}
@media(max-width:1100px){.co{grid-template-columns:1fr}.co-right{position:static}}
@media(max-width:820px){.fg3,.fg2{grid-template-columns:1fr}.ci{flex-wrap:wrap}}

/* ----- Bảo hành ----- */
.wh{background:linear-gradient(135deg,#f7fbff 0%,#e6f3fd 60%,#d6ecfb 100%);border-radius:20px;padding:34px;box-shadow:var(--shadow);margin-bottom:16px;position:relative;overflow:hidden}
.wh .ph{position:absolute;right:0;top:0;bottom:0;width:40%;background:transparent}
.wh .k{display:inline-block;background:#dbeefc;color:var(--btn-d);font-size:12px;font-weight:600;border-radius:999px;padding:4px 12px}
.wh h1{font-size:34px;margin:12px 0 8px;position:relative}
.wh p{max-width:460px;color:#475569;position:relative}
.wh .hots{display:flex;gap:12px;margin:18px 0;flex-wrap:wrap;position:relative}
.wh .hot{background:#fff;margin:0}
.wh .acts{display:flex;gap:10px;flex-wrap:wrap;position:relative}
.wh .acts .btn{height:40px;font-size:13.5px;padding:0 16px}
.wfeat{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.wfeat div{background:#fff;border-radius:14px;padding:16px 18px;display:flex;gap:14px;align-items:center;box-shadow:var(--shadow)}
.wfeat .ic{width:42px;height:42px;border-radius:12px;background:#eef7fe;color:var(--btn-d);display:grid;place-items:center;flex:none}
.wfeat b{display:block}.wfeat small{color:var(--muted);font-size:12.5px}
.wtabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin:-22px -22px 22px;padding:8px 14px 0;overflow:auto}
.wtabs button{display:flex;gap:8px;align-items:center;padding:12px 14px;font-weight:600;font-size:13.5px;border-bottom:2px solid transparent;color:#475569;white-space:nowrap}
.wtabs button.on{color:var(--btn-d);border-color:var(--btn)}
.wpane{display:none}.wpane.on{display:block}
.w2{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start}
.whd{display:flex;gap:14px;align-items:flex-start;margin-bottom:20px}
.whd .ic{width:46px;height:46px;border-radius:12px;background:#eef7fe;color:var(--btn-d);display:grid;place-items:center;flex:none}
.whd h2{font-size:20px}.whd p{color:var(--muted);font-size:13px}
.whd .meta{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap}
.whd .meta span{border:1px solid var(--line);border-radius:999px;padding:4px 10px;font-size:12px;white-space:nowrap}
.wstep{display:grid;grid-template-columns:34px 1fr;gap:14px;margin-bottom:22px}
.wstep>i{width:30px;height:30px;border-radius:50%;border:1px solid #bcdcf4;color:var(--btn-d);font-style:normal;font-weight:700;display:grid;place-items:center;font-size:13px}
.wstep h4{font-size:15px}.wstep>div>p{color:var(--muted);font-size:12.5px;margin-bottom:12px}
.hint{font-size:12px;color:var(--muted);margin-top:4px}
.req{color:var(--red)}
.opt-tag{font-size:11px;background:#f1f5f9;border-radius:6px;padding:1px 6px;font-weight:500;margin-left:6px;color:var(--muted)}
.captcha{display:flex;gap:10px;align-items:center}
.captcha .code{font-family:monospace;font-size:24px;font-weight:700;letter-spacing:6px;background:repeating-linear-gradient(45deg,#e0f2fe 0 6px,#f0f9ff 6px 12px);border-radius:10px;padding:6px 16px;color:#0c4a6e;font-style:italic;user-select:none}
.side-card{border:1px solid var(--line);border-radius:16px;padding:18px;margin-bottom:14px;font-size:13px}
.side-card h4{margin-bottom:10px;font-size:14.5px}
.side-card ul{list-style:none}.side-card li{display:flex;gap:8px;margin-bottom:8px}
.side-card li svg{color:var(--btn);width:16px;height:16px;margin-top:2px}
.side-card.blue{background:#eef7fe;border-color:#cfe7fa}
.side-card .big{font-size:26px;font-weight:800;color:var(--btn-d)}
.result{border:1px dashed var(--btn);background:#f3f9fe;border-radius:14px;padding:16px;margin-top:16px;display:none}
.result.show{display:block}
.result table{width:100%;font-size:13.5px;border-collapse:collapse}
.result td{padding:6px 0}.result td:first-child{color:var(--muted);width:40%}
.guide{counter-reset:g;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.guide div{border:1px solid var(--line);border-radius:14px;padding:16px;position:relative}
.guide div::before{counter-increment:g;content:counter(g);width:30px;height:30px;border-radius:50%;background:var(--btn);color:#fff;display:grid;place-items:center;font-weight:700;margin-bottom:8px}
.guide b{display:block}.guide small{color:var(--muted)}
@media(max-width:1100px){.w2{grid-template-columns:1fr}.guide{grid-template-columns:1fr 1fr}}
@media(max-width:820px){.wfeat{grid-template-columns:1fr}.wh{padding:22px}.wh h1{font-size:26px}.whd{flex-wrap:wrap}.whd .meta{margin-left:0}}

/* ----- So sánh ----- */
.cmp-top{display:flex;justify-content:space-between;align-items:center;gap:16px}
.cmp-top h1{font-size:30px}.cmp-top p{color:var(--muted)}
.btn-pill{border-radius:999px;background:var(--btn);color:#fff;padding:12px 22px;font-weight:600}
.sug{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.sug-it{border:1px solid var(--line);border-radius:14px;padding:12px;display:flex;gap:12px;align-items:center}
.sug-it .ph{width:64px;height:64px;border-radius:10px;flex:none}
.sug-it .tg{font-size:11px;background:#e8f5fd;color:var(--btn-d);border-radius:6px;padding:1px 8px;font-weight:600}
.sug-it b{display:block;font-size:13px;line-height:1.3;margin:4px 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sug-it .pr{color:var(--red);font-weight:700;font-size:13px}
.sug-it button{margin-left:auto;width:34px;height:34px;border-radius:50%;background:#e8f5fd;color:var(--btn-d);font-size:20px;flex:none}
.search-drop{position:relative}
.search-res{position:absolute;left:0;right:0;top:100%;background:#fff;border:1px solid var(--line);border-radius:12px;margin-top:6px;box-shadow:var(--shadow);z-index:5;max-height:320px;overflow:auto;display:none}
.search-res.show{display:block}
.search-res button{display:flex;gap:10px;align-items:center;width:100%;padding:10px 14px;text-align:left;border-bottom:1px solid #f1f5f9}
.search-res button:hover{background:#f8fafc}
.search-res .ph{width:36px;height:36px;border-radius:8px;flex:none}
.ctable-wrap{overflow:auto;border-radius:16px;border:1px solid var(--line)}
.ctable{border-collapse:collapse;width:100%;min-width:760px;font-size:13.5px;table-layout:fixed}
.ctable th,.ctable td{padding:12px 14px;border-bottom:1px solid #eef1f5;text-align:left;vertical-align:top}
.ctable th:first-child,.ctable td:first-child{width:200px;position:sticky;left:0;background:#fff;font-weight:600;z-index:1}
.ctable .grp td{background:#f1f5f9!important;font-weight:700;font-size:14px}
.ctable .hlr td{background:#fffbeb}
.ctable .hlr td:first-child{background:#fffbeb}
.ctable .pcol{position:relative}
.ctable .pcol .ph{height:130px;border-radius:12px;margin-bottom:10px;background:#f8fafc}
.ctable .pcol b{display:block;margin-bottom:6px;line-height:1.35}
.ctable .pcol .x{position:absolute;right:10px;top:10px;width:28px;height:28px;border-radius:50%;background:#fff;box-shadow:var(--shadow);z-index:2}
.ctable .pr{color:var(--btn-d);font-weight:700}
.ctable .add-col{border:2px dashed #cbd5e1;border-radius:12px;height:200px;display:grid;place-items:center;color:var(--muted);font-weight:600;text-align:center}
.st-ok{display:inline-block;background:#dcfce7;color:#15803d;font-size:11.5px;border-radius:6px;padding:1px 8px;font-weight:600}
@media(max-width:1100px){.sug{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.sug{grid-template-columns:1fr}.cmp-top{flex-direction:column;align-items:flex-start}}

/* ----- Danh mục ----- */
.cat-bar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.cat-bar h1{font-size:24px;margin-right:auto}
.cat-bar select{height:40px;border:1px solid var(--line);border-radius:10px;padding:0 12px;background:#fff}
.cat-chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
textarea{font-family:inherit;font-size:14px}
.sr p.lk a{display:flex;gap:8px;align-items:center}
/* --- tinh chỉnh responsive --- */
.cmp-bar{width:max-content}
.cmp-bar .t{white-space:nowrap}
@media(max-width:1100px){.pd{grid-template-columns:minmax(0,1fr)}.co{grid-template-columns:minmax(0,1fr)}.w2{grid-template-columns:minmax(0,1fr)}}
@media(max-width:820px){
  .hero{height:auto;margin-bottom:0;padding-bottom:24px}
  .hero .txt{padding-top:30px}
  .gal-thumbs .ph{width:60px;height:60px}
  .fc-call,.fc-chat{display:none}
  .survey-fab{padding:10px 14px;font-size:13px}
  .cmp-bar{width:auto;flex-wrap:nowrap;padding:10px 12px;gap:8px}
  .cmp-bar .t small{display:none}
  .cmp-bar .btn{height:38px!important;padding:0 12px;font-size:13px}
  .wbox{padding:16px}
  .pr-box h1{font-size:19px}
  .ci .qty{order:5}
  .whd .meta{display:none}
}
.mega-grid a .ph>img{object-fit:cover}
.quick .ph>img{object-fit:cover}