/* ====== Nền tảng ====== */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-body);font-size:var(--fs);line-height:1.65;color:var(--text);background:var(--body-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--link);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
h1,h2,h3,h4{font-family:var(--font-heading);color:var(--heading);line-height:1.3;margin:0 0 .6em}
button,input,select,textarea{font:inherit}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 16px}
.container.narrow{max-width:900px}
.center{text-align:center}
.muted{color:#777}.small{font-size:.88em}
.ico{flex-shrink:0;vertical-align:middle}
.hp{position:absolute!important;left:-9999px;opacity:0;height:0;width:0}

/* ====== Nút ====== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--button);color:var(--button-text);border:2px solid var(--button);
  padding:10px 24px;border-radius:var(--radius);font-weight:700;text-transform:uppercase;font-size:.9em;letter-spacing:.3px;cursor:pointer;transition:.25s}
.btn:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-ghost{background:transparent;border-color:#fff;color:#fff}
.btn-ghost:hover{background:#fff;color:var(--primary);border-color:#fff}
.btn-block{width:100%}

/* ====== Thanh trên cùng ====== */
.topbar{background:var(--topbar-bg);color:var(--topbar-text);font-size:13px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:12px;min-height:36px;padding-top:4px;padding-bottom:4px}
.topbar a{color:var(--topbar-text)}.topbar a:hover{color:var(--accent)}
.tb-left,.tb-right{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.tb-left span,.tb-right a{display:inline-flex;align-items:center;gap:6px}

/* ====== Header ====== */
.header{background:var(--header-bg);box-shadow:0 1px 0 rgba(0,0,0,.06)}
.header-in{display:flex;align-items:center;gap:24px;min-height:92px}
.logo img{max-height:72px;width:auto}
.search{flex:1;max-width:480px;display:flex;border:2px solid var(--primary);border-radius:var(--radius);overflow:hidden;background:#fff}
.search input{flex:1;border:0;padding:10px 14px;outline:0;min-width:0;background:transparent}
.search button{border:0;background:var(--primary);color:#fff;padding:0 16px;cursor:pointer}
.search.big{max-width:640px;margin:0 0 30px}
.header-actions{display:flex;align-items:center;gap:18px;margin-left:auto}
.hotline{display:flex;align-items:center;gap:10px;color:var(--text)}
.hl-ico{width:44px;height:44px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;animation:ring 1.6s infinite}
.hl-txt small{display:block;font-size:12px;color:#777;line-height:1.2}
.hl-txt b{color:var(--price);font-size:19px;line-height:1.2}
.cart-btn{position:relative;width:46px;height:46px;border-radius:50%;background:var(--section-alt);color:var(--primary);display:grid;place-items:center}
.cart-count{position:absolute;top:-4px;right:-4px;background:var(--price);color:#fff;font-size:11px;font-weight:700;min-width:20px;height:20px;border-radius:10px;display:grid;place-items:center;padding:0 5px}
.nav-toggle{display:none;background:none;border:0;color:var(--primary);cursor:pointer;padding:4px}
@keyframes ring{0%,100%{transform:rotate(0)}10%,30%{transform:rotate(-14deg)}20%,40%{transform:rotate(14deg)}50%{transform:rotate(0)}}

/* ====== Menu ====== */
.mainnav{background:var(--menu-bg);position:sticky;top:0;z-index:50;box-shadow:0 3px 10px rgba(0,0,0,.12)}
.mainnav .container{display:flex;align-items:center;justify-content:space-between}
.nav-head,.sub-toggle{display:none}
.menu{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap}
.menu>li{position:relative}
.menu>li>a{display:flex;align-items:center;gap:4px;color:var(--menu-text);padding:15px 18px;font-weight:700;text-transform:uppercase;font-size:14px;font-family:var(--font-heading)}
.menu>li:hover>a,.menu>li.active>a{background:var(--menu-hover);color:#fff}
.menu .sub{list-style:none;margin:0;padding:6px 0;position:absolute;left:0;top:100%;min-width:270px;background:#fff;box-shadow:0 10px 30px rgba(0,0,0,.15);
  border-top:3px solid var(--menu-hover);opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s;z-index:10}
.menu li:hover>.sub{opacity:1;visibility:visible;transform:none}
.menu .sub a{display:block;padding:9px 18px;color:var(--text);font-size:14px;border-bottom:1px solid #f1f1f1}
.menu .sub a:hover{color:var(--primary);background:var(--section-alt);padding-left:24px}
.nav-call{color:#fff;font-weight:700;display:flex;align-items:center;gap:6px;background:var(--accent);padding:8px 16px;border-radius:var(--radius);white-space:nowrap}
.nav-call:hover{color:#fff;filter:brightness(1.1)}
.nav-overlay{display:none}

/* ====== Slider ====== */
.slider{position:relative;height:min(560px,62vw);min-height:340px;overflow:hidden;background:#111}
.slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity .9s;display:flex;align-items:center}
.slide::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.55),rgba(0,0,0,.15))}
.slide.on{opacity:1;z-index:1}
.slide .container{position:relative}
.slide-box{max-width:640px;color:#fff}
.al-center .slide-box{margin:0 auto;text-align:center}.al-center .slide-btns{justify-content:center}
.al-right .slide-box{margin-left:auto;text-align:right}.al-right .slide-btns{justify-content:flex-end}
.slide-title{color:#fff;font-size:clamp(26px,4.4vw,52px);font-weight:700;text-transform:uppercase;margin-bottom:12px;text-shadow:0 2px 12px rgba(0,0,0,.35)}
.slide-sub{font-size:clamp(15px,1.6vw,20px);margin:0 0 26px;opacity:.95}
.slide.on .slide-title,.slide.on .slide-sub,.slide.on .slide-btns{animation:fadeUp .8s both}
.slide.on .slide-sub{animation-delay:.15s}.slide.on .slide-btns{animation-delay:.3s}
.slide-btns{display:flex;gap:12px;flex-wrap:wrap}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
.sl-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:3;background:rgba(255,255,255,.18);border:0;color:#fff;width:46px;height:46px;border-radius:50%;cursor:pointer;display:grid;place-items:center}
.sl-nav:hover{background:var(--accent)}
.sl-nav.prev{left:16px}.sl-nav.next{right:16px}
.sl-dots{position:absolute;bottom:18px;left:0;right:0;z-index:3;display:flex;justify-content:center;gap:8px}
.sl-dots button{width:11px;height:11px;border-radius:6px;border:0;background:rgba(255,255,255,.5);cursor:pointer;transition:.3s;padding:0}
.sl-dots button.on{background:var(--accent);width:28px}

/* ====== Khối nội dung ====== */
.sec{padding:56px 0}
.sec.alt{background:var(--section-alt)}
.sec-title{text-align:center;text-transform:uppercase;font-size:clamp(22px,2.6vw,30px);font-weight:700;position:relative;padding-bottom:14px;margin-bottom:30px}
.sec-title::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:70px;height:3px;background:var(--accent);border-radius:2px}
.sec-title.left{text-align:left}.sec-title.left::after{left:0;transform:none}
.sec-title a{color:inherit}
.sec-title.light{color:#fff}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:6px}
.sec-head .sec-title{margin-bottom:24px}
.link-more{display:inline-flex;align-items:center;gap:4px;font-weight:700;margin-bottom:28px;white-space:nowrap}
.page-title{font-size:clamp(22px,2.4vw,30px);text-transform:uppercase}
.rich p{margin:0 0 1em}.rich ul,.rich ol{padding-left:1.3em}.rich img{border-radius:var(--radius);margin:1em auto}
.rich table{width:100%;border-collapse:collapse}.rich td,.rich th{border:1px solid #ddd;padding:8px}
.rich h2,.rich h3{margin-top:1.2em}
.empty{padding:40px;text-align:center;background:var(--section-alt);border-radius:var(--radius);color:#666}
.empty .btn{margin-top:14px}

/* Giới thiệu */
.intro-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:center}
.intro-img{position:relative}
.intro-img::before{content:"";position:absolute;inset:18px -18px -18px 18px;border:4px solid var(--accent);border-radius:var(--radius);z-index:0}
.intro-img img{position:relative;border-radius:var(--radius);box-shadow:0 14px 40px rgba(0,0,0,.15);width:100%}

/* Số liệu */
.stats{background:var(--primary);color:#fff;padding:44px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{text-align:center;padding:10px}
.stat-ico{width:74px;height:74px;margin:0 auto 14px;border-radius:50%;border:2px dashed rgba(255,255,255,.6);display:grid;place-items:center;color:var(--accent);background:rgba(255,255,255,.08);transition:.4s}
.stat:hover .stat-ico{transform:rotateY(180deg);background:var(--accent);color:#fff;border-color:var(--accent)}
.stat h4{color:#fff;font-size:18px;margin-bottom:6px}
.stat p{margin:0;opacity:.85;font-size:14px}

/* Lưới sản phẩm */
.grid-products{display:grid;grid-template-columns:repeat(var(--cols),1fr);gap:22px}
.grid-products.in-side{grid-template-columns:repeat(max(2,calc(var(--cols) - 1)),1fr)}
.card{position:relative;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.06);transition:.3s;display:flex;flex-direction:column;border:1px solid #eee}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(0,0,0,.12);border-color:var(--primary)}
.card .thumb{aspect-ratio:4/3;overflow:hidden;background:#f5f5f5}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .thumb img{transform:scale(1.07)}
.card-body{padding:12px 14px 14px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:15px;font-weight:500;margin:0 0 8px;font-family:var(--font-body);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card h3 a{color:var(--text)}.card h3 a:hover{color:var(--primary)}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px}
.price{color:var(--price);font-weight:700}
.price.contact{font-size:14px}
del{color:#999;font-size:.85em}
.add-cart button{width:36px;height:36px;border-radius:50%;border:1px solid var(--primary);background:#fff;color:var(--primary);cursor:pointer;display:grid;place-items:center;transition:.2s}
.add-cart button:hover{background:var(--primary);color:#fff}
.badge{position:absolute;top:10px;left:10px;z-index:2;background:var(--accent);color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:20px}
.badge.sale{background:var(--price)}
.center .btn{margin-top:32px}

/* Lý do */
.reasons{background-size:cover;background-position:center;background-attachment:fixed;padding:64px 0;position:relative}
.reasons::before{content:"";position:absolute;inset:0;background:var(--primary-dark);opacity:.82}
.reasons .container{position:relative}
.reasons-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.reason{display:flex;gap:16px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);padding:22px;color:#fff;transition:.3s}
.reason:hover{background:rgba(255,255,255,.15);transform:translateY(-3px)}
.r-ico{width:60px;height:60px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;flex-shrink:0}
.reason h4{color:#fff;font-size:16px;margin-bottom:6px}
.reason p{margin:0;font-size:14px;opacity:.88}

/* Phương châm + form */
.motto-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.motto-sub{color:var(--accent);font-size:24px;margin-bottom:12px}
.motto-list{list-style:none;padding:0;margin:0 0 22px}
.motto-list li{display:flex;gap:8px;align-items:center;margin-bottom:6px}
.motto-list .ico{color:var(--accent)}
.form-title{text-transform:uppercase;font-size:18px;margin-top:8px}
.lead-form{display:grid;gap:12px}
.lead-form .row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.lead-form input,.lead-form textarea,.inline-form input,.sort-form select,.cart-table input{width:100%;border:1px solid #d7dce3;border-radius:var(--radius);padding:11px 14px;background:#fff;outline:0;transition:.2s}
.lead-form input:focus,.lead-form textarea:focus,.inline-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 18%,transparent)}
.lead-form .btn{justify-self:start}
.video{position:relative;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;cursor:pointer;background:#000}
.video img{width:100%;height:100%;object-fit:cover;opacity:.85}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.play{position:absolute;left:50%;top:50%;width:72px;height:72px;transform:translate(-50%,-50%);border-radius:50%;background:var(--price);box-shadow:0 0 0 10px rgba(255,255,255,.25)}
.play::after{content:"";position:absolute;left:29px;top:22px;border-style:solid;border-width:14px 0 14px 22px;border-color:transparent transparent transparent #fff}
.contact-mini{margin-top:24px;background:var(--section-alt);padding:20px;border-radius:var(--radius)}
.contact-mini p{margin:0 0 12px;font-size:14px}
.inline-form{display:flex;gap:8px}.inline-form .btn{flex-shrink:0}

/* Tin tức */
.grid-posts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);display:flex;flex-direction:column;transition:.3s}
.post-card:hover{box-shadow:0 14px 30px rgba(0,0,0,.12)}
.post-card .thumb{aspect-ratio:16/10;overflow:hidden}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:.5s}
.post-card:hover .thumb img{transform:scale(1.06)}
.post-body{padding:16px 18px 20px}
.post-body h3{font-size:17px;margin-bottom:8px}.post-body h3 a{color:var(--heading)}
.post-body p{font-size:14px;color:#666;margin:0 0 10px}
.meta{font-size:13px;color:#888;display:flex;align-items:center;gap:5px;margin-bottom:6px}
.more{display:inline-flex;align-items:center;gap:4px;font-weight:700;font-size:14px}

/* Đối tác */
.partners{padding:34px 0;border-top:1px solid #eee}
.partner-row{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;align-items:center}
.partner img{filter:grayscale(1);opacity:.7;transition:.3s;margin:auto;max-height:70px}
.partner:hover img{filter:none;opacity:1}

/* Breadcrumb */
.breadcrumb{background:var(--section-alt);padding:12px 0;font-size:14px}
.breadcrumb a{color:var(--text);display:inline-flex;align-items:center;gap:4px}
.breadcrumb a:hover{color:var(--primary)}.breadcrumb span{color:#aaa;margin:0 4px}.breadcrumb b{color:var(--primary);font-weight:500}

/* Bố cục có cột bên */
.layout-side{display:grid;grid-template-columns:270px 1fr;gap:32px;align-items:start}
.layout-side.right{grid-template-columns:1fr 300px}
.layout-side.right .sidebar{order:2}
.widget{background:#fff;border:1px solid #e8ebf0;border-radius:var(--radius);margin-bottom:22px;overflow:hidden}
.w-title{background:var(--primary);color:#fff;margin:0;padding:12px 16px;font-size:15px;text-transform:uppercase}
.w-cats{list-style:none;margin:0;padding:6px 0}
.w-cats a{display:flex;align-items:center;gap:6px;padding:9px 16px;color:var(--text);font-size:14px;border-bottom:1px dashed #eee}
.w-cats a em{margin-left:auto;font-style:normal;font-size:12px;background:var(--section-alt);border-radius:10px;padding:0 8px;color:#777}
.w-cats li.on a,.w-cats a:hover{color:var(--primary);background:var(--section-alt)}
.w-support{padding-bottom:14px}
.w-phone{display:flex;align-items:center;gap:8px;padding:10px 16px 0;font-weight:700;font-size:18px;color:var(--price)}
.w-zalo{display:block;margin:12px 16px 0;text-align:center;background:#0068ff;color:#fff;border-radius:var(--radius);padding:9px;font-weight:700}
.w-zalo:hover{color:#fff;filter:brightness(1.1)}
.w-posts{list-style:none;margin:0;padding:8px 12px}
.w-posts a{display:flex;gap:10px;padding:8px 0;border-bottom:1px dashed #eee;color:var(--text);font-size:14px;line-height:1.4}
.w-posts img{width:76px;height:56px;object-fit:cover;border-radius:4px;flex-shrink:0}
.w-posts small{display:block;color:#999;font-size:12px;margin-top:3px}
.list-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.list-head .page-title{margin:0}
.sort-form label{display:flex;align-items:center;gap:8px;font-size:14px;white-space:nowrap}
.sort-form select{padding:7px 10px;width:auto}
.cat-desc{margin:14px 0;padding:14px 16px;background:var(--section-alt);border-left:4px solid var(--accent);border-radius:var(--radius)}

/* Phân trang */
.pagination{display:flex;gap:6px;justify-content:center;margin-top:36px;flex-wrap:wrap}
.pagination a,.pagination span{min-width:40px;height:40px;display:grid;place-items:center;border-radius:var(--radius);border:1px solid #dde2ea;color:var(--text);padding:0 10px}
.pagination .cur,.pagination a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Chi tiết sản phẩm */
.pd-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:40px}
.pd-main{border:1px solid #eee;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;background:#f6f6f6}
.pd-main img{width:100%;height:100%;object-fit:contain}
.pd-thumbs{display:flex;gap:10px;margin-top:12px;overflow-x:auto}
.pd-thumbs button{border:2px solid transparent;border-radius:6px;padding:0;width:84px;height:64px;flex-shrink:0;cursor:pointer;overflow:hidden;background:#fff}
.pd-thumbs button.on{border-color:var(--primary)}
.pd-thumbs img{width:100%;height:100%;object-fit:cover}
.pd-info h1{font-size:clamp(22px,2.4vw,30px)}
.pd-meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:14px;color:#777;padding-bottom:12px;border-bottom:1px dashed #ddd}
.pd-meta span{display:inline-flex;align-items:center;gap:4px}
.pd-price{font-size:26px;margin:14px 0}
.pd-short{color:#555;margin-bottom:14px}
.specs{width:100%;border-collapse:collapse;margin-bottom:18px;font-size:14px}
.specs th,.specs td{border:1px solid #e5e8ee;padding:8px 12px;text-align:left}
.specs th{background:var(--section-alt);width:38%;font-weight:500}
.pd-buy{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:18px}
.qty{display:flex;border:1px solid #d7dce3;border-radius:var(--radius);overflow:hidden}
.qty button{width:38px;border:0;background:var(--section-alt);cursor:pointer;font-size:18px}
.qty input{width:56px;border:0;text-align:center;padding:10px 0;-moz-appearance:textfield}
.qty input::-webkit-inner-spin-button{-webkit-appearance:none}
.pd-contact{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}
.pd-contact a{display:flex;align-items:center;justify-content:center;gap:10px;padding:10px;border-radius:var(--radius);color:#fff;text-align:center;line-height:1.25}
.pd-contact b{display:block;font-size:16px}
.pd-contact span{font-size:13px}
.pc-phone{background:var(--price)}.pc-zalo{background:#0068ff}
.pd-contact a:hover{color:#fff;filter:brightness(1.1)}
.pd-policy{list-style:none;padding:14px;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:8px;background:var(--section-alt);border-radius:var(--radius);font-size:14px}
.pd-policy li{display:flex;align-items:center;gap:6px}.pd-policy .ico{color:var(--primary)}
.pd-tabs{border:1px solid #e8ebf0;border-radius:var(--radius);padding:24px;margin-bottom:40px}
.tab-title{font-size:18px;text-transform:uppercase;border-bottom:2px solid var(--primary);display:inline-block;padding-bottom:6px}

/* Bài viết */
.article .lead{font-weight:500;font-size:1.05em;padding:14px 18px;background:var(--section-alt);border-left:4px solid var(--accent);border-radius:var(--radius)}
.share{margin-top:24px;padding-top:16px;border-top:1px solid #eee;display:flex;gap:12px;align-items:center}
.share a{display:inline-flex;gap:4px;align-items:center;background:#1877f2;color:#fff;padding:5px 12px;border-radius:4px;font-size:13px}
.page-banner{height:260px;background-size:cover;background-position:center}

/* Catalog */
.grid-catalog{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat-item{text-align:center;border:1px solid #e8ebf0;border-radius:var(--radius);padding:14px;background:#fff}
.cat-item .thumb{aspect-ratio:3/4;overflow:hidden;border-radius:var(--radius);margin-bottom:12px;background:#f5f5f5}
.cat-item .thumb img{width:100%;height:100%;object-fit:cover}
.cat-item h3{font-size:16px}

/* Liên hệ */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;margin-bottom:36px}
.ci-list{list-style:none;padding:0;margin:0;display:grid;gap:16px}
.ci-list li{display:flex;gap:14px;align-items:flex-start}
.ci-ico{width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;flex-shrink:0}
.ci-list small{display:block;color:#888;font-size:13px}
.big-map{width:100%;height:420px;border:0;border-radius:var(--radius)}
.alert{padding:10px 14px;border-radius:var(--radius);margin-bottom:12px}
.alert.error{background:#fdecec;color:#b42318;border:1px solid #f7c9c9}

/* Giỏ hàng */
.cart-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:30px;align-items:start}
.cart-table table{width:100%;border-collapse:collapse;background:#fff}
.cart-table th{background:var(--primary);color:#fff;padding:10px;text-align:left;font-size:14px}
.cart-table td{padding:12px 10px;border-bottom:1px solid #eee;vertical-align:middle}
.cart-table input{width:74px;padding:7px}
.ct-prod{display:flex;align-items:center;gap:10px}
.ct-prod img{width:64px;height:48px;object-fit:cover;border-radius:4px}
.rm{background:none;border:0;color:#c00;cursor:pointer}
.cart-actions{display:flex;justify-content:space-between;align-items:center;margin-top:16px;gap:10px;flex-wrap:wrap}
.checkout{background:var(--section-alt);padding:22px;border-radius:var(--radius)}
.checkout h3{font-size:16px;text-transform:uppercase;margin-top:12px}
.sum{display:flex;justify-content:space-between;font-size:18px;padding-bottom:12px;border-bottom:1px solid #ddd}
.sum b{color:var(--price)}
.thanks .ok-ico{width:90px;height:90px;border-radius:50%;background:#16a34a;color:#fff;display:grid;place-items:center;margin:0 auto 18px}
.big404{font-size:110px;color:var(--primary);margin:0}

/* Chân trang */
.footer{background:var(--footer-bg);color:var(--footer-text);font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr .9fr 1.2fr;gap:30px;padding-top:50px;padding-bottom:40px}
.footer h4{color:var(--footer-heading);text-transform:uppercase;font-size:16px;position:relative;padding-bottom:10px;margin-bottom:16px}
.footer h4::after{content:"";position:absolute;left:0;bottom:0;width:40px;height:2px;background:var(--accent)}
.footer a{color:var(--footer-text)}.footer a:hover{color:var(--accent)}
.f-logo{max-height:60px;width:auto;background:#fff;padding:6px 10px;border-radius:var(--radius);margin-bottom:14px}
.f-contact,.f-links{list-style:none;padding:0;margin:0}
.f-contact li{display:flex;gap:10px;margin-bottom:10px}.f-contact .ico{color:var(--accent);margin-top:3px}
.f-links li{margin-bottom:7px}.f-links a{display:inline-flex;align-items:center;gap:4px}
.f-social{display:flex;gap:8px;margin-top:16px}
.f-social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.1);display:grid;place-items:center}
.f-social a:hover{background:var(--accent);color:#fff}
.f-map iframe{width:100%;height:210px;border:0;border-radius:var(--radius)}
.copyright{background:var(--copyright-bg);text-align:center;padding:14px 0;font-size:13px}

/* Nút nổi */
.float-btns{position:fixed;right:16px;bottom:20px;z-index:90;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.float-btns>a,.float-btns>button{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;border:0;cursor:pointer;box-shadow:0 6px 18px rgba(0,0,0,.25);position:relative}
.fb-zalo{background:#0068ff;font-weight:900;font-size:13px}
.fb-zalo::before,.fb-phone::before{content:"";position:absolute;inset:-6px;border-radius:50%;border:2px solid currentColor;animation:pulse 1.8s infinite;opacity:.5}
.fb-zalo::before{border-color:#0068ff}.fb-phone::before{border-color:var(--price)}
.fb-mess{background:linear-gradient(45deg,#0099ff,#a033ff)}
.fb-phone{background:var(--price)}
.fb-phone em{position:absolute;right:60px;background:var(--price);color:#fff;font-style:normal;font-weight:700;padding:6px 14px;border-radius:20px;white-space:nowrap;font-size:14px}
.fb-phone .ico{animation:ring 1.6s infinite}
.fb-top{background:var(--primary);opacity:0;visibility:hidden;transition:.3s}
.fb-top.show{opacity:1;visibility:visible}
@keyframes pulse{0%{transform:scale(.9);opacity:.7}100%{transform:scale(1.35);opacity:0}}

/* Thông báo */
.toast{position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:999;background:#16a34a;color:#fff;padding:12px 22px;border-radius:var(--radius);box-shadow:0 10px 30px rgba(0,0,0,.2);transition:.4s;max-width:92vw}
.toast.error{background:#dc2626}
.toast.hide{opacity:0;transform:translate(-50%,-20px)}

/* ====== Responsive ====== */
@media (max-width:1100px){
  .grid-products{grid-template-columns:repeat(min(var(--cols),3),1fr)}
  .grid-products.in-side{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .menu>li>a{padding:15px 12px;font-size:13px}
}
@media (max-width:900px){
  .hide-sm{display:none!important}
  .header-in{min-height:70px;gap:12px;flex-wrap:wrap;padding-top:8px;padding-bottom:10px}
  .nav-toggle{display:block}
  .logo{flex:1;min-width:0}.logo img{max-height:48px;max-width:100%}
  .header-actions{gap:10px}.hl-ico{width:40px;height:40px}.cart-btn{width:40px;height:40px}
  .search{order:5;flex-basis:100%;max-width:none}
  .hl-txt{display:none}
  .mainnav{position:fixed;top:0;left:0;bottom:0;width:300px;max-width:86vw;transform:translateX(-100%);transition:.3s;overflow-y:auto;z-index:200}
  .mainnav.open{transform:none}
  .mainnav .container{display:block;padding:0}
  .nav-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;color:#fff;border-bottom:1px solid rgba(255,255,255,.15)}
  .nav-head button{background:none;border:0;color:#fff;cursor:pointer}
  .menu{display:block}
  .menu>li{border-bottom:1px solid rgba(255,255,255,.1)}
  .menu>li>a{padding:13px 16px;font-size:14px}
  .menu>li>a .ico{display:none}
  .sub-toggle{display:grid;place-items:center;position:absolute;right:0;top:0;width:48px;height:48px;background:none;border:0;color:var(--menu-text);cursor:pointer}
  .has-sub.open .sub-toggle .ico{transform:rotate(180deg)}
  .menu .sub{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;display:none;background:rgba(0,0,0,.15);padding:0}
  .menu .has-sub.open .sub{display:block}
  .menu .sub a{color:var(--menu-text);border-color:rgba(255,255,255,.08);padding-left:28px}
  .menu .sub a:hover{background:rgba(0,0,0,.15);color:#fff}
  .nav-call{margin:16px;justify-content:center}
  .nav-overlay.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:150}
  .intro-grid,.motto-grid,.pd-grid,.contact-grid,.cart-grid{grid-template-columns:1fr;gap:28px}
  .intro-img::before{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .reasons-grid,.grid-posts{grid-template-columns:repeat(2,1fr)}
  .reasons{background-attachment:scroll}
  .layout-side,.layout-side.right{grid-template-columns:1fr}
  .layout-side .sidebar{order:2}
  .grid-catalog{grid-template-columns:repeat(3,1fr)}
  .partner-row{grid-template-columns:repeat(3,1fr)}
  .sec{padding:40px 0}
}
@media (max-width:600px){
  .topbar .tb-left{display:none}.topbar .container{justify-content:center}
  .grid-products,.grid-products.in-side{grid-template-columns:repeat(2,1fr);gap:12px}
  .card-body{padding:10px}.card h3{font-size:14px}
  .reasons-grid,.grid-posts,.footer-grid{grid-template-columns:1fr}
  .stats-grid{gap:10px}.stat h4{font-size:15px}
  .grid-catalog{grid-template-columns:repeat(2,1fr)}
  .lead-form .row2{grid-template-columns:1fr}
  .lead-form .btn{justify-self:stretch}
  .pd-contact,.pd-policy{grid-template-columns:1fr}
  .pd-buy .btn{flex:1}
  .sl-nav{display:none}
  .slider{min-height:380px}
  .fb-phone em{display:none}
  .cart-table thead{display:none}
  .cart-table tr{display:grid;grid-template-columns:1fr auto;border-bottom:1px solid #ddd;padding:8px 0}
  .cart-table td{border:0;padding:4px 6px}
  .cart-table td[data-l]::before{content:attr(data-l) ": ";color:#888;font-size:13px}
  .ct-prod{grid-column:1/-1}
  .float-btns>a,.float-btns>button{width:46px;height:46px}
}