:root{
  --blue:#0b4aa8; --navy:#0a2a66; --teal:#0aa3a8; --teal-d:#078a8f; --bg:#f4f8fc; --text:#1c2a40; --muted:#6a7a90; --line:#e2eaf3; --red:#e5484d;
  --shadow:0 6px 24px rgba(10,42,102,.10); --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:130px}
body{font-family:'Poppins',system-ui,sans-serif;color:var(--text);background:#fff;line-height:1.55}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}

/* topbar */
#topbar{background:var(--navy);color:#dbe7ff;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
.topbar-links{display:flex;gap:20px;flex-wrap:wrap}
.topbar-links i,.topbar-inner>span>i{color:var(--teal);margin-right:5px}
.topbar-links a:hover{color:#fff}

/* header */
#site-header{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 2px 12px rgba(10,42,102,.08)}
.header-inner{display:flex;align-items:center;gap:22px;padding-top:10px;padding-bottom:10px}
.brand img{height:64px;width:auto}
.search{flex:1;display:flex;border:2px solid var(--line);border-radius:999px;overflow:hidden;background:var(--bg);transition:.2s}
.search:focus-within{border-color:var(--teal);background:#fff}
.search input{flex:1;border:0;background:transparent;padding:11px 18px;outline:none;min-width:0}
.search button{border:0;background:var(--teal);color:#fff;padding:0 22px;cursor:pointer}
.search button:hover{background:var(--teal-d)}
.header-phone{display:flex;align-items:center;gap:10px;white-space:nowrap}
.header-phone i{font-size:26px;color:var(--teal)}
.header-phone small{display:block;color:var(--muted);font-size:11px;line-height:1.1}
.header-phone strong{color:var(--navy)}
.icon-btn{background:none;border:0;font-size:22px;cursor:pointer;color:var(--navy);padding:6px 10px}
#menu-toggle{display:none}
.cart-btn{position:relative;background:var(--blue);color:#fff;border:0;width:48px;height:48px;border-radius:50%;font-size:19px;cursor:pointer;transition:.2s;flex-shrink:0}
.cart-btn:hover{background:var(--navy);transform:scale(1.06)}
#cart-count{position:absolute;top:-4px;right:-4px;background:var(--red);color:#fff;font-size:12px;font-weight:700;min-width:21px;height:21px;border-radius:999px;display:flex;align-items:center;justify-content:center;padding:0 5px}
#main-nav{background:linear-gradient(90deg,var(--navy),var(--blue))}
.nav-inner{display:flex;gap:6px}
.nav-inner a{color:#fff;padding:12px 18px;font-weight:500;font-size:14.5px;transition:.2s}
.nav-inner a:hover{background:rgba(255,255,255,.15)}

/* hero */
#hero{background:linear-gradient(180deg,var(--bg),#fff);padding:26px 0 8px}
.hero-img{width:100%;border-radius:20px;box-shadow:var(--shadow)}
.hero-cta{display:flex;gap:14px;justify-content:center;margin-top:22px;flex-wrap:wrap}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:999px;border:2px solid transparent;font-weight:600;cursor:pointer;transition:.2s}
.btn-lg{padding:13px 28px;font-size:15.5px}
.btn-primary{background:linear-gradient(90deg,var(--blue),var(--teal));color:#fff}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-outline{border-color:var(--blue);color:var(--blue);background:#fff}
.btn-outline:hover{background:var(--blue);color:#fff}
.btn-light{background:#fff;color:var(--navy)}
.btn-light:hover{background:#eaf3ff}
.btn-block{width:100%}
.btn:disabled{opacity:.6;cursor:not-allowed}

/* features */
#features{padding:28px 0}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.feature{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:0 2px 10px rgba(10,42,102,.04)}
.feature i{font-size:28px;color:var(--teal)}
.feature h3{font-size:14.5px;color:var(--navy);line-height:1.25}
.feature p{font-size:12.5px;color:var(--muted)}

/* sections */
.section{padding:56px 0}
.section-alt{background:var(--bg)}
.section-title{text-align:center;font-size:30px;font-weight:700;color:var(--navy);margin-bottom:8px;position:relative;padding-bottom:14px}
.section-title::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:64px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--blue),var(--teal))}
.section-title.left{text-align:left}
.section-title.left::after{left:0;transform:none}
.section-sub{text-align:center;color:var(--muted);margin-bottom:32px}

/* categories */
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px}
.category-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 12px;text-align:center;cursor:pointer;transition:.25s}
.category-card i{font-size:34px;color:var(--teal);margin-bottom:12px;transition:.25s}
.category-card h3{font-size:14px;color:var(--navy)}
.category-card small{color:var(--muted)}
.category-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--teal)}
.category-card:hover i{color:var(--blue);transform:scale(1.12)}

/* shop */
.shop-toolbar{display:flex;justify-content:space-between;gap:16px;align-items:center;margin:26px 0 10px;flex-wrap:wrap}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1.5px solid var(--line);background:#fff;padding:7px 16px;border-radius:999px;cursor:pointer;font-size:13.5px;font-weight:500;color:var(--text);transition:.2s}
.chip:hover{border-color:var(--teal)}
.chip.active{background:var(--blue);border-color:var(--blue);color:#fff}
#sort-select{padding:9px 14px;border:1.5px solid var(--line);border-radius:999px;background:#fff;outline:none}
.results-info{color:var(--muted);font-size:13.5px;margin-bottom:14px}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:10px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.25s;position:relative}
.product-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.product-thumb{height:150px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eaf3ff,#dff6f6);font-size:58px;color:var(--blue);overflow:hidden}
.product-thumb img{width:100%;height:100%;object-fit:contain;display:block;background:#fff}
.product-card[data-cat="desinfection"] .product-thumb,.product-card[data-cat="papier"] .product-thumb{color:var(--teal-d)}
.badge{position:absolute;top:12px;left:12px;background:var(--red);color:#fff;font-size:11.5px;font-weight:600;padding:3px 12px;border-radius:999px;z-index:2}
.badge.b-new{background:var(--teal)}
.badge.b-top{background:var(--blue)}
.badge.b-out{background:#64748b}
.product-body{padding:16px;display:flex;flex-direction:column;flex:1}
.product-cat{font-size:11.5px;color:var(--teal-d);font-weight:600;text-transform:uppercase;letter-spacing:.4px}
.product-body h3{font-size:15px;color:var(--navy);margin:4px 0 6px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.product-desc{font-size:12.5px;color:var(--muted);flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.price-row{display:flex;align-items:baseline;gap:8px;margin:12px 0}
.price{font-size:19px;font-weight:700;color:var(--blue)}
.old-price{font-size:13px;color:var(--muted);text-decoration:line-through}
.unit{font-size:12px;color:var(--muted)}
.add-btn{width:100%}
.add-btn:disabled{background:#eef1f5;color:#94a3b8;cursor:not-allowed;transform:none;filter:none;border:1px solid var(--line)}
.empty{grid-column:1/-1;text-align:center;padding:50px 0;color:var(--muted)}

/* promo banner */
.promo-banner{display:flex;align-items:center;justify-content:space-between;gap:24px;background:linear-gradient(110deg,var(--navy),var(--blue) 55%,var(--teal));color:#fff;border-radius:22px;padding:36px 40px;flex-wrap:wrap}
.promo-banner h2{font-size:26px;margin:8px 0}
.promo-banner p{max-width:620px;opacity:.92}
.tag{background:rgba(255,255,255,.2);padding:4px 14px;border-radius:999px;font-size:12.5px;font-weight:600}

/* about */
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center}
.about-grid p{margin:14px 0}
.about-logo img{max-width:340px;margin:0 auto}
.check-list{list-style:none;margin-top:14px}
.check-list li{padding:5px 0}
.check-list i{color:var(--teal);margin-right:8px}

/* contact */
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:28px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 16px;text-align:center;transition:.25s}
.contact-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.contact-card i{font-size:30px;color:var(--teal);margin-bottom:10px}
.contact-card h3{font-size:16px;color:var(--navy)}
.contact-card p{color:var(--muted);font-size:14px;word-break:break-word}

/* footer */
#site-footer{background:var(--navy);color:#c6d5f2}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-top:44px;padding-bottom:30px}
.footer-logo{height:84px;background:#fff;border-radius:12px;padding:6px;margin-bottom:14px}
#site-footer h4{color:#fff;margin-bottom:12px}
#site-footer a,#site-footer span{display:block;padding:3px 0;font-size:14px}
#site-footer a:hover{color:var(--teal)}
#site-footer i{color:var(--teal);margin-right:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);text-align:center;padding:16px;font-size:13px}

/* cart drawer */
.overlay{position:fixed;inset:0;background:rgba(10,20,40,.5);opacity:0;pointer-events:none;transition:.3s;z-index:90}
.overlay.show{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;height:100%;width:420px;max-width:100%;background:#fff;z-index:100;display:flex;flex-direction:column;transform:translateX(100%);transition:.3s;box-shadow:-10px 0 40px rgba(0,0,0,.15)}
.drawer.open{transform:none}
.drawer-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-head h3{color:var(--navy);font-size:18px}
.drawer-body{flex:1;overflow-y:auto;padding:12px 20px}
.cart-empty{text-align:center;color:var(--muted);padding:60px 0}
.cart-empty i{font-size:46px;color:var(--line);margin-bottom:12px}
.cart-line{display:flex;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.cart-line .ico{width:52px;height:52px;border-radius:10px;background:linear-gradient(135deg,#eaf3ff,#dff6f6);display:flex;align-items:center;justify-content:center;color:var(--blue);font-size:22px;flex-shrink:0;overflow:hidden}
.cart-line .ico img{width:100%;height:100%;object-fit:contain;background:#fff}
.cart-line .info{flex:1;min-width:0}
.cart-line .info h4{font-size:13.5px;color:var(--navy);line-height:1.3}
.cart-line .info span{font-size:13px;color:var(--blue);font-weight:600}
.qty{display:flex;align-items:center;gap:2px;margin-top:6px}
.qty button{width:26px;height:26px;border-radius:50%;border:1px solid var(--line);background:#fff;cursor:pointer}
.qty button:hover{background:var(--blue);color:#fff}
.qty b{min-width:28px;text-align:center;font-size:14px}
.remove-btn{background:none;border:0;color:var(--red);cursor:pointer;font-size:16px}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line);background:var(--bg)}
.drawer-foot .row{display:flex;justify-content:space-between;padding:3px 0;font-size:14px}
.drawer-foot .total{font-size:18px;color:var(--navy);border-top:1px dashed #c5d3e6;margin-top:6px;padding-top:8px;margin-bottom:6px}
.drawer-foot small{display:block;color:var(--teal-d);margin-bottom:10px;font-size:12.5px}

/* modal */
.modal{position:fixed;inset:0;background:rgba(10,20,40,.6);z-index:120;display:none;align-items:center;justify-content:center;padding:16px;overflow-y:auto}
.modal.show{display:flex}
.modal-box{background:#fff;border-radius:20px;width:100%;max-width:640px;padding:30px;position:relative;max-height:94vh;overflow-y:auto}
.modal-box>h3{font-size:22px;color:var(--navy);margin-bottom:16px}
.modal-close{position:absolute;top:12px;right:12px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid label{display:flex;flex-direction:column;font-size:13px;font-weight:500;gap:5px}
.form-grid .full{grid-column:1/-1}
.form-grid input,.form-grid select,.form-grid textarea{padding:11px 14px;border:1.5px solid var(--line);border-radius:10px;outline:none;background:#fff}
.form-grid input:focus,.form-grid select:focus,.form-grid textarea:focus{border-color:var(--teal)}
.form-grid .invalid{border-color:var(--red)}
.hp{position:absolute!important;left:-9999px;opacity:0;height:0;width:0}
.pay-info{margin:14px 0;background:#e9f9f9;color:var(--teal-d);padding:10px 14px;border-radius:10px;font-size:13.5px}
.checkout-summary{background:var(--bg);border-radius:12px;padding:12px 16px;font-size:13.5px;margin-bottom:12px}
.checkout-summary .l{display:flex;justify-content:space-between;gap:10px;padding:2px 0}
.checkout-summary .t{font-weight:700;color:var(--navy);border-top:1px dashed #c5d3e6;margin-top:6px;padding-top:6px}
.error{color:var(--red);font-size:13.5px;min-height:20px;margin-bottom:8px}
.order-success{text-align:center;padding:20px 0}
.order-success i{font-size:70px;color:var(--teal);margin-bottom:10px}
.order-success p{margin:8px 0}
.order-success .btn{margin-top:14px}
.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,40px);background:var(--navy);color:#fff;padding:12px 24px;border-radius:999px;z-index:200;opacity:0;pointer-events:none;transition:.3s;font-size:14px}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* responsive */
@media(max-width:1100px){
  .product-grid{grid-template-columns:repeat(3,1fr)}
  .category-grid{grid-template-columns:repeat(4,1fr)}
  .header-phone{display:none}
}
@media(max-width:820px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  #menu-toggle{display:block}
  .header-inner{flex-wrap:wrap;gap:10px}
  .brand{order:2;margin-right:auto}
  #menu-toggle{order:1}
  .cart-btn{order:3}
  .search{order:4;flex:1 1 100%}
  .brand img{height:52px}
  #main-nav{display:none}
  #main-nav.open{display:block}
  .nav-inner{flex-direction:column;gap:0;padding:0}
  .promo-banner{padding:26px 22px}
}
@media(max-width:520px){
  .container{padding:0 14px}
  .topbar-inner>span:first-child{display:none}
  .section{padding:38px 0}
  .section-title{font-size:24px}
  .product-grid{gap:12px}
  .product-thumb{height:110px;font-size:42px}
  .product-body{padding:12px}
  .product-body h3{font-size:13.5px}
  .product-desc{display:none}
  .category-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
  .modal-box{padding:22px 18px}
  .feature{padding:12px}
  .feature i{font-size:22px}
}