/* ============================================================
   MacZone — thiết kế lại 2026
   Hệ màu: xanh MacZone (#0a6cff) + nền sáng, card bo tròn, shadow mềm
   ============================================================ */
:root{
  --blue:#0a6cff;
  --blue-dark:#0047c2;
  --cyan:#00c2ff;
  --ink:#0d1b2e;
  --muted:#5b6b80;
  --line:#e5eaf2;
  --bg:#f4f7fc;
  --card:#ffffff;
  --red:#e8402c;
  --green:#0fa958;
  --amber:#f59e0b;
  --radius:18px;
  --shadow:0 6px 24px rgba(13,27,46,.07);
  --shadow-lg:0 18px 50px rgba(13,27,46,.14);
  --grad:linear-gradient(135deg,var(--blue) 0%,var(--cyan) 100%);
  --maxw:1280px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Be Vietnam Pro",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:15.5px;line-height:1.6;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;border:none;background:none;cursor:pointer;color:inherit}
input,select,textarea{font:inherit;color:inherit}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- nút ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-weight:600;font-size:15px;
  transition:.2s;white-space:nowrap;border:1.5px solid transparent}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(10,108,255,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(10,108,255,.42)}
.btn-ghost{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#1d3050}
.btn-sm{padding:9px 16px;font-size:13.5px}
.btn-block{width:100%}

/* ---------- thanh trên cùng ---------- */
.topbar{background:var(--ink);color:#c9d6ea;font-size:12.5px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;min-height:34px;gap:12px}
.topbar a{color:#fff;font-weight:600}
.topbar .tb-left,.topbar .tb-right{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
@media(max-width:768px){.topbar .tb-left span.tb-addr{display:none}}

/* ---------- header ---------- */
.site-header{background:#fff;position:sticky;top:0;z-index:900;box-shadow:0 1px 0 var(--line)}
.header-main{display:flex;align-items:center;gap:22px;padding:14px 0}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-badge{width:44px;height:44px;border-radius:13px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;
  font-size:24px;font-style:italic;box-shadow:0 6px 16px rgba(10,108,255,.35)}
.logo-text{line-height:1.05}
.logo-text b{font-size:22px;letter-spacing:.5px;font-weight:800;font-style:italic;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.logo-text small{display:block;font-size:10.5px;color:var(--muted);letter-spacing:1.6px;text-transform:uppercase}
.search-wrap{flex:1;max-width:520px;position:relative}
.search-box{display:flex;align-items:center;background:var(--bg);border:1.5px solid var(--line);
  border-radius:999px;padding:0 6px 0 18px;height:46px;transition:.2s}
.search-box:focus-within{border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(10,108,255,.1)}
.search-box input{flex:1;border:none;outline:none;background:transparent;font-size:14.5px}
.search-box .search-btn{width:36px;height:36px;border-radius:50%;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;flex-shrink:0}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.h-action{display:flex;align-items:center;gap:10px;padding:8px 14px;border-radius:14px;transition:.2s;position:relative}
.h-action:hover{background:var(--bg)}
.h-action .ic{width:38px;height:38px;border-radius:12px;background:#eaf2ff;color:var(--blue);
  display:flex;align-items:center;justify-content:center;flex-shrink:0}
.h-action .tx{line-height:1.2;font-size:12px;color:var(--muted)}
.h-action .tx b{display:block;font-size:13.5px;color:var(--ink)}
.cart-count{position:absolute;top:2px;left:38px;background:var(--red);color:#fff;font-size:10.5px;
  font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;
  justify-content:center;padding:0 4px;border:2px solid #fff}
.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;background:var(--bg);
  align-items:center;justify-content:center}

/* ---------- nav ---------- */
.main-nav{border-top:1px solid var(--line);background:#fff}
.main-nav ul.nav-list{display:flex;flex-wrap:wrap;gap:2px}
.main-nav .nav-item{position:relative}
.main-nav .nav-item>a{display:flex;align-items:center;gap:6px;padding:12px 14px;font-weight:600;
  font-size:13.5px;letter-spacing:.2px;border-radius:10px 10px 0 0;transition:.15s;text-transform:uppercase}
.main-nav .nav-item>a:hover,.main-nav .nav-item>a.active{color:var(--blue)}
.main-nav .nav-item>a .car{font-size:9px;opacity:.5}
.dropdown{position:absolute;top:100%;left:0;background:#fff;min-width:230px;border-radius:0 0 16px 16px;
  box-shadow:var(--shadow-lg);padding:10px;display:none;z-index:600;border-top:3px solid var(--blue)}
.nav-item:hover .dropdown{display:block}
.dropdown a{display:block;padding:9px 14px;border-radius:10px;font-size:14px;color:#334760}
.dropdown a:hover{background:#eaf2ff;color:var(--blue);font-weight:600}

/* drawer mobile */
.drawer-overlay{position:fixed;inset:0;background:rgba(13,27,46,.5);z-index:1000;opacity:0;
  pointer-events:none;transition:.25s;backdrop-filter:blur(2px)}
.drawer-overlay.open{opacity:1;pointer-events:auto}
.mobile-drawer{position:fixed;top:0;left:0;bottom:0;width:min(320px,85vw);background:#fff;z-index:1001;
  transform:translateX(-105%);transition:.28s cubic-bezier(.4,0,.2,1);overflow-y:auto;padding:20px}
.mobile-drawer.open{transform:none}
.mobile-drawer .m-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.mobile-drawer .m-cat>a{display:flex;justify-content:space-between;align-items:center;padding:12px 10px;
  font-weight:600;border-bottom:1px solid var(--line)}
.mobile-drawer .m-sub{padding:4px 10px 10px 22px;display:none}
.mobile-drawer .m-sub a{display:block;padding:7px 0;color:var(--muted);font-size:14px}
.mobile-drawer .m-cat.open .m-sub{display:block}
.mobile-drawer .m-hot{margin-top:16px;background:#eaf2ff;border-radius:14px;padding:14px;font-size:14px}

/* ---------- hero ---------- */
.hero{margin:22px auto 0}
.hero-slider{position:relative;border-radius:24px;overflow:hidden;box-shadow:var(--shadow-lg)}
.slides{display:flex;transition:transform .55s cubic-bezier(.4,0,.2,1)}
.slide{min-width:100%;min-height:400px;display:flex;align-items:center;position:relative;overflow:hidden;padding:40px 56px}
.slide .s-body{position:relative;z-index:2;max-width:520px}
.slide .s-kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.35);color:#fff;padding:6px 14px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.6px;text-transform:uppercase;backdrop-filter:blur(4px)}
.slide h2{color:#fff;font-size:clamp(26px,4vw,44px);line-height:1.15;margin:16px 0 12px;font-weight:800}
.slide p{color:rgba(255,255,255,.88);font-size:16px;margin-bottom:24px}
.slide .s-img{position:absolute;right:4%;bottom:0;top:0;width:44%;display:flex;align-items:center;justify-content:center;z-index:1}
.slide .s-img img{max-height:82%;object-fit:contain;border-radius:20px;filter:drop-shadow(0 24px 44px rgba(0,0,0,.35))}
.slide-1{background:linear-gradient(120deg,#0a6cff 0%,#00c2ff 60%,#7ee0ff 100%)}
.slide-2{background:linear-gradient(120deg,#0b1220 0%,#14263f 55%,#0a6cff 130%)}
.slide-3{background:linear-gradient(120deg,#046d54 0%,#0fa958 60%,#7bd88f 100%)}
.slide .bubble{position:absolute;border-radius:50%;background:rgba(255,255,255,.12)}
.hero-dots{position:absolute;bottom:16px;left:56px;display:flex;gap:8px;z-index:5}
.hero-dots button{width:26px;height:6px;border-radius:3px;background:rgba(255,255,255,.4);transition:.25s}
.hero-dots button.on{background:#fff;width:40px}
.hero-arr{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;
  background:rgba(255,255,255,.85);color:var(--ink);display:flex;align-items:center;justify-content:center;
  z-index:5;font-size:18px;box-shadow:var(--shadow);transition:.2s}
.hero-arr:hover{background:#fff;transform:translateY(-50%) scale(1.08)}
.hero-arr.prev{left:14px}.hero-arr.next{right:14px}
@media(max-width:860px){
  .slide{padding:32px 26px;min-height:420px;align-items:flex-start}
  .slide .s-body{max-width:100%}
  .slide .s-img{opacity:.6;right:-10%;width:75%;top:auto;height:55%;bottom:-6%}
  .hero-dots{left:26px}
}

/* ---------- USP ---------- */
.usp{margin:26px auto}
.usp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.usp-item{background:#fff;border-radius:16px;padding:16px 18px;display:flex;gap:14px;align-items:center;box-shadow:var(--shadow)}
.usp-item .u-ic{width:46px;height:46px;border-radius:14px;background:#eaf2ff;color:var(--blue);font-size:22px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0}
.usp-item b{display:block;font-size:13.5px;text-transform:uppercase;letter-spacing:.3px}
.usp-item span{font-size:12.5px;color:var(--muted)}
@media(max-width:1024px){.usp-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.usp-grid{grid-template-columns:1fr 1fr;gap:10px}
  .usp-item{flex-direction:column;text-align:center;padding:14px 10px;gap:8px}}

/* ---------- danh mục tiles ---------- */
.cat-tiles{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.cat-tile{background:#fff;border-radius:16px;padding:18px 8px 14px;text-align:center;box-shadow:var(--shadow);
  transition:.2s;border:1.5px solid transparent}
.cat-tile:hover{transform:translateY(-4px);border-color:var(--blue);box-shadow:var(--shadow-lg)}
.cat-tile .c-ic{font-size:28px;margin-bottom:8px}
.cat-tile b{font-size:12.5px;font-weight:600;display:block;line-height:1.3}
@media(max-width:1024px){.cat-tiles{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){.cat-tiles{grid-template-columns:repeat(2,1fr)}}

/* ---------- section ---------- */
.section{margin:44px auto}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:20px}
.section-head h2{font-size:clamp(20px,2.6vw,27px);font-weight:800;display:flex;align-items:center;gap:12px}
.section-head h2::before{content:"";width:5px;height:26px;border-radius:3px;background:var(--grad);display:inline-block}
.section-head .see-all{color:var(--blue);font-weight:600;font-size:14px;white-space:nowrap}
.section-head .see-all:hover{text-decoration:underline}

/* ---------- product grid/card ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.prod-grid.cols-6{grid-template-columns:repeat(6,1fr)}
@media(max-width:1100px){.prod-grid,.prod-grid.cols-6{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.prod-grid,.prod-grid.cols-6{grid-template-columns:repeat(2,1fr);gap:12px}}
.prod-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;
  display:flex;flex-direction:column;transition:.22s;cursor:pointer;position:relative;border:1.5px solid transparent}
.prod-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#cfe0ff}
.prod-thumb{position:relative;background:#fff;aspect-ratio:1/0.82;display:flex;align-items:center;justify-content:center;padding:16px}
.prod-thumb img{max-height:100%;object-fit:contain;transition:.3s}
.prod-card:hover .prod-thumb img{transform:scale(1.05)}
.prod-thumb .no-img{width:70%;aspect-ratio:1;border-radius:18px;background:linear-gradient(135deg,#eaf2ff,#f6faff);
  display:flex;align-items:center;justify-content:center;font-size:38px}
.p-badges{position:absolute;top:10px;left:10px;display:flex;flex-direction:column;gap:5px;z-index:2}
.chip{font-size:10.5px;font-weight:700;letter-spacing:.4px;padding:4px 9px;border-radius:999px;color:#fff;text-transform:uppercase}
.chip-hot{background:var(--blue)}
.chip-new{background:var(--green)}
.chip-sale{background:var(--red)}
.chip-stock{background:var(--amber)}
.p-cond{position:absolute;top:10px;right:10px;z-index:2;font-size:10.5px;font-weight:600;
  padding:4px 9px;border-radius:999px;background:rgba(13,27,46,.78);color:#fff;backdrop-filter:blur(3px)}
.p-cond.cond-new{background:rgba(15,169,88,.9)}
.p-cond.cond-open{background:rgba(245,158,11,.92)}
.p-cond.cond-like{background:rgba(10,108,255,.9)}
.prod-info{padding:4px 16px 16px;display:flex;flex-direction:column;gap:5px;flex:1}
.prod-title{font-weight:700;font-size:14.5px;line-height:1.35}
.prod-sub{font-size:12.5px;color:var(--muted);line-height:1.4;flex:1}
.prod-price{font-size:16.5px;font-weight:800;color:var(--blue);margin-top:4px}
.prod-price.lienhe{color:var(--red);font-size:14.5px}
.prod-actions{display:flex;gap:8px;margin-top:10px}
.prod-actions .btn{flex:1;padding:9px 8px;font-size:12.5px}
.prod-actions .add-cart{flex:0 0 40px;width:40px;height:38px;border-radius:12px;background:#eaf2ff;
  color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:17px;transition:.2s}
.prod-actions .add-cart:hover{background:var(--blue);color:#fff}

/* hàng cuộn ngang (bán chạy) */
.scroll-row{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 64px)/5);gap:16px;
  overflow-x:auto;padding:4px 4px 14px;scroll-snap-type:x mandatory;scrollbar-width:thin}
.scroll-row>.prod-card{scroll-snap-align:start}
@media(max-width:1100px){.scroll-row{grid-auto-columns:calc((100% - 32px)/3)}}
@media(max-width:760px){.scroll-row{grid-auto-columns:calc((100% - 16px)/2)}}

/* ---------- banner strip ---------- */
.strip{border-radius:22px;overflow:hidden;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.strip-card{border-radius:22px;padding:30px 34px;color:#fff;position:relative;overflow:hidden;min-height:170px;
  display:flex;flex-direction:column;justify-content:center;gap:8px}
.strip-card h3{font-size:22px;font-weight:800}
.strip-card p{font-size:14px;opacity:.92;max-width:420px}
.strip-card .btn{align-self:flex-start;margin-top:10px}
.strip-a{background:linear-gradient(120deg,#0a6cff,#00c2ff)}
.strip-b{background:linear-gradient(120deg,#101c30,#2a3d5e)}
.strip-card .big-emoji{position:absolute;right:18px;bottom:6px;font-size:88px;opacity:.25;transform:rotate(-8deg)}
@media(max-width:860px){.strip{grid-template-columns:1fr}}

/* ---------- vì sao chọn ---------- */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.why-card{background:#fff;border-radius:20px;padding:26px;box-shadow:var(--shadow);border-top:4px solid var(--blue)}
.why-card.wc-open{border-top-color:var(--amber)}
.why-card.wc-like{border-top-color:var(--green)}
.why-card .w-tag{display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;
  padding:5px 12px;border-radius:999px;background:#eaf2ff;color:var(--blue);margin-bottom:12px}
.why-card.wc-open .w-tag{background:#fef3e2;color:#b45309}
.why-card.wc-like .w-tag{background:#e5f8ee;color:#0b7a41}
.why-card h3{font-size:18px;margin-bottom:8px}
.why-card p{font-size:14px;color:var(--muted)}
@media(max-width:860px){.why-grid{grid-template-columns:1fr}}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:16px}
.service-item{background:#fff;border-radius:16px;padding:18px;display:flex;gap:14px;box-shadow:var(--shadow)}
.service-item .s-ic{width:44px;height:44px;border-radius:13px;background:var(--grad);color:#fff;font-size:20px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0}
.service-item b{font-size:14.5px;display:block;margin-bottom:2px}
.service-item span{font-size:13px;color:var(--muted)}
@media(max-width:860px){.service-grid{grid-template-columns:1fr}}

/* ---------- hotline band ---------- */
.hotline-band{background:var(--ink);border-radius:22px;padding:30px;display:grid;
  grid-template-columns:repeat(3,1fr);gap:18px;color:#fff}
.hl-item{display:flex;gap:14px;align-items:center;padding:6px 10px}
.hl-item .hl-ic{width:50px;height:50px;border-radius:50%;background:rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.hl-item span{display:block;font-size:12.5px;color:#9fb3cf}
.hl-item a{font-size:19px;font-weight:800;letter-spacing:.4px}
.hl-item a:hover{color:var(--cyan)}
@media(max-width:860px){.hotline-band{grid-template-columns:1fr;padding:22px}}

/* ---------- footer ---------- */
.site-footer{background:#0b1220;color:#b9c7dd;margin-top:60px;font-size:14px}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:30px;padding:44px 0 30px}
.site-footer h4{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:1px;margin-bottom:16px}
.site-footer li{margin-bottom:9px}
.site-footer a:hover{color:var(--cyan)}
.f-about p{margin:10px 0;font-size:13.5px;line-height:1.7}
.f-hotlines div{margin-bottom:10px;font-size:13.5px}
.f-hotlines b{color:#fff;font-size:15px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:16px 0;font-size:13px;
  display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;color:#7e91ad}
@media(max-width:900px){.footer-top{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.footer-top{grid-template-columns:1fr}}

/* ---------- nút liên hệ nổi ---------- */
.float-contact{position:fixed;right:16px;bottom:20px;display:flex;flex-direction:column;gap:12px;z-index:950}
.fc-btn{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:22px;box-shadow:0 10px 26px rgba(13,27,46,.3);transition:.2s;position:relative}
.fc-btn:hover{transform:scale(1.1)}
.fc-phone{background:var(--red);animation:ring 1.6s infinite}
.fc-zalo{background:#0068ff;font-size:13px;font-weight:800;letter-spacing:-.5px}
.fc-mess{background:linear-gradient(45deg,#a02cf8,#ff5c87,#ff8a3c)}
.fc-top{background:#fff;color:var(--ink);font-size:18px;display:none}
.fc-top.show{display:flex}
@keyframes ring{0%,100%{box-shadow:0 10px 26px rgba(232,64,44,.35),0 0 0 0 rgba(232,64,44,.45)}
  60%{box-shadow:0 10px 26px rgba(232,64,44,.35),0 0 0 14px rgba(232,64,44,0)}}

/* ---------- trang danh mục ---------- */
.page-head{margin:24px auto 6px}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:8px}
.breadcrumb a:hover{color:var(--blue)}
.page-head h1{font-size:clamp(22px,3vw,30px);font-weight:800}
.page-head .count{color:var(--muted);font-size:14px;font-weight:400}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;background:#fff;border-radius:16px;
  padding:12px 14px;box-shadow:var(--shadow);margin:16px 0 22px}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px;flex:1}
.f-chip{padding:8px 16px;border-radius:999px;background:var(--bg);font-size:13.5px;font-weight:600;
  border:1.5px solid transparent;transition:.15s}
.f-chip:hover{border-color:var(--blue);color:var(--blue)}
.f-chip.on{background:var(--grad);color:#fff;box-shadow:0 4px 12px rgba(10,108,255,.3)}
.filter-bar select{border:1.5px solid var(--line);border-radius:12px;padding:9px 12px;background:#fff;
  font-size:13.5px;outline:none;cursor:pointer}
.filter-bar select:focus{border-color:var(--blue)}
.empty-state{text-align:center;padding:70px 20px;color:var(--muted)}
.empty-state .e-ic{font-size:52px;margin-bottom:12px}

/* ---------- trang nội dung ---------- */
.content-page{background:#fff;border-radius:22px;box-shadow:var(--shadow);padding:clamp(24px,4vw,48px);margin:24px auto 40px}
.content-page h1{font-size:clamp(24px,3.2vw,32px);margin-bottom:6px}
.content-page .lead{color:var(--muted);font-size:16px;margin-bottom:26px}
.content-page h2{font-size:20px;margin:30px 0 12px;padding-top:6px}
.content-page h3{font-size:16.5px;margin:20px 0 8px}
.content-page p{margin-bottom:12px}
.content-page ul.disc{list-style:disc;padding-left:22px;margin-bottom:14px}
.content-page ul.disc li{margin-bottom:7px}
.content-page .note{background:#fff8e6;border:1px solid #f3dfa4;border-radius:14px;padding:14px 18px;
  font-size:14px;margin:14px 0}
.tbl{width:100%;border-collapse:collapse;margin:14px 0;font-size:14px}
.tbl th{background:#eaf2ff;color:var(--blue-dark);text-align:left;padding:11px 14px;font-size:13px;
  text-transform:uppercase;letter-spacing:.4px}
.tbl td{padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl tr:last-child td{border-bottom:none}
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px}

/* tabs chính sách */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.tab-btn{padding:10px 18px;border-radius:999px;background:var(--bg);font-weight:600;font-size:14px;
  border:1.5px solid transparent}
.tab-btn.on{background:var(--grad);color:#fff}
.tab-pane{display:none}
.tab-pane.on{display:block;animation:fadeUp .3s}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- liên hệ ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:22px;margin:24px auto 40px}
.contact-info,.contact-form{background:#fff;border-radius:22px;box-shadow:var(--shadow);padding:30px}
.ci-item{display:flex;gap:14px;margin-bottom:18px}
.ci-item .ci-ic{width:44px;height:44px;border-radius:13px;background:#eaf2ff;color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:19px;flex-shrink:0}
.ci-item b{display:block;font-size:14.5px}
.ci-item span,.ci-item a{font-size:14px;color:var(--muted)}
.ci-item a:hover{color:var(--blue)}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-weight:600;font-size:13.5px;margin-bottom:6px}
.form-group input,.form-group textarea,.form-group select{width:100%;border:1.5px solid var(--line);
  border-radius:13px;padding:12px 15px;font-size:14.5px;outline:none;transition:.2s;background:#fff}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--blue);
  box-shadow:0 0 0 4px rgba(10,108,255,.1)}
.map-wrap{border-radius:22px;overflow:hidden;box-shadow:var(--shadow);margin-bottom:40px}
.map-wrap iframe{width:100%;height:380px;border:0;display:block}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr}}

/* ---------- trả góp ---------- */
.calc-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:22px;margin:24px auto 40px}
.calc-form,.calc-result{background:#fff;border-radius:22px;box-shadow:var(--shadow);padding:30px}
.calc-result .cr-total{background:var(--grad);border-radius:18px;color:#fff;padding:22px;margin-bottom:18px}
.calc-result .cr-total span{font-size:13px;opacity:.85}
.calc-result .cr-total b{display:block;font-size:32px;letter-spacing:.5px}
.cr-row{display:flex;justify-content:space-between;padding:11px 4px;border-bottom:1px dashed var(--line);font-size:14.5px}
.cr-row b{font-size:15px}
.range-val{font-weight:800;color:var(--blue)}
input[type=range]{width:100%;accent-color:var(--blue);height:34px}
@media(max-width:860px){.calc-grid{grid-template-columns:1fr}}

/* ---------- modal / drawer / overlay chung ---------- */
.overlay{position:fixed;inset:0;background:rgba(13,27,46,.55);z-index:1100;display:none;
  align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(3px)}
.overlay.open{display:flex}
.modal{background:#fff;border-radius:24px;max-width:820px;width:100%;max-height:90vh;overflow-y:auto;
  position:relative;animation:fadeUp .25s}
.modal-close{position:absolute;top:14px;right:14px;width:38px;height:38px;border-radius:50%;
  background:var(--bg);font-size:16px;display:flex;align-items:center;justify-content:center;z-index:5}
.modal-close:hover{background:var(--red);color:#fff}
.qv-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:10px}
.qv-img{padding:34px;display:flex;align-items:center;justify-content:center;background:#f8fafd;border-radius:24px 0 0 24px}
.qv-img img{max-height:320px;object-fit:contain}
.qv-body{padding:34px 30px}
.qv-body h3{font-size:21px;line-height:1.3;margin-bottom:4px}
.qv-body .qv-sub{color:var(--muted);margin-bottom:12px}
.qv-price{font-size:28px;font-weight:800;color:var(--blue);margin:10px 0 4px}
.qv-note{font-size:12.5px;color:var(--muted);margin-bottom:14px}
.qv-perks{background:var(--bg);border-radius:14px;padding:14px 16px;font-size:13.5px;margin:14px 0}
.qv-perks li{display:flex;gap:8px;margin-bottom:7px}
.qv-perks li::before{content:"✓";color:var(--green);font-weight:800}
.qv-ctas{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
@media(max-width:720px){.qv-grid{grid-template-columns:1fr}.qv-img{border-radius:24px 24px 0 0;padding:22px}}

/* giỏ hàng */
.cart-drawer{position:fixed;top:0;right:0;bottom:0;width:min(400px,92vw);background:#fff;z-index:1200;
  transform:translateX(105%);transition:.28s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;
  box-shadow:-10px 0 40px rgba(13,27,46,.18)}
.cart-drawer.open{transform:none}
.cart-head{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.cart-head h3{font-size:17px}
.cart-items{flex:1;overflow-y:auto;padding:14px 22px}
.cart-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line)}
.cart-item img{width:64px;height:64px;object-fit:contain;background:#f8fafd;border-radius:12px;padding:6px;flex-shrink:0}
.cart-item .ci-t{font-size:13.5px;font-weight:600;line-height:1.35}
.cart-item .ci-s{font-size:12px;color:var(--muted)}
.cart-item .ci-p{font-size:14px;font-weight:700;color:var(--blue);margin-top:3px}
.qty-ctrl{display:inline-flex;align-items:center;gap:10px;margin-top:6px}
.qty-ctrl button{width:24px;height:24px;border-radius:8px;background:var(--bg);font-weight:700}
.qty-ctrl button:hover{background:var(--blue);color:#fff}
.ci-remove{margin-left:auto;color:var(--muted);font-size:15px;align-self:flex-start}
.ci-remove:hover{color:var(--red)}
.cart-foot{padding:18px 22px;border-top:1px solid var(--line);background:#fbfcfe}
.cart-total{display:flex;justify-content:space-between;font-size:15px;margin-bottom:12px}
.cart-total b{font-size:20px;color:var(--blue)}
.cart-empty{text-align:center;color:var(--muted);padding:60px 20px}
.cart-empty .e-ic{font-size:46px;margin-bottom:10px}

/* tìm kiếm overlay */
.search-overlay{position:fixed;inset:0;background:rgba(13,27,46,.6);z-index:1150;display:none;
  padding:8vh 20px 20px;backdrop-filter:blur(4px)}
.search-overlay.open{display:block}
.search-panel{max-width:640px;margin:0 auto;background:#fff;border-radius:22px;overflow:hidden;
  display:flex;flex-direction:column;max-height:74vh;animation:fadeUp .22s}
.search-panel .sp-input{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line)}
.search-panel input{flex:1;border:none;outline:none;font-size:17px}
.sp-results{overflow-y:auto;padding:8px}
.sp-item{display:flex;gap:12px;padding:10px 14px;border-radius:14px;align-items:center;cursor:pointer}
.sp-item:hover{background:var(--bg)}
.sp-item img{width:52px;height:52px;object-fit:contain;background:#f8fafd;border-radius:10px;padding:4px}
.sp-item .r-t{font-size:14px;font-weight:600}
.sp-item .r-s{font-size:12px;color:var(--muted)}
.sp-item .r-p{margin-left:auto;font-weight:700;color:var(--blue);font-size:14px;white-space:nowrap}
.sp-hint{padding:20px;text-align:center;color:var(--muted);font-size:14px}

/* toast */
.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,80px);background:var(--ink);color:#fff;
  padding:13px 22px;border-radius:999px;font-size:14px;font-weight:600;z-index:1300;opacity:0;
  transition:.3s;box-shadow:var(--shadow-lg);display:flex;gap:8px;align-items:center;max-width:92vw}
.toast.show{transform:translate(-50%,0);opacity:1}
.toast .t-ic{color:#4ade80}

/* responsive header */
@media(max-width:1024px){
  .h-action .tx{display:none}
  .h-action{padding:8px}
}
@media(max-width:860px){
  .main-nav{display:none}
  .menu-toggle{display:flex}
  .search-wrap{display:none}
  .header-main{gap:12px}
}
.mobile-search{display:none;padding:0 0 12px}
@media(max-width:860px){.mobile-search{display:block}}
.mobile-search .search-box{height:42px}

/* tiện ích */
.text-center{text-align:center}
.mt-20{margin-top:20px}
.hidden{display:none!important}