:root {
  --blue: #0b4ea2; --blue-d: #083b7a; --blue-l: #e8f0fb; --red: #e53935; --orange: #ff4500;
  --text: #222; --muted: #666; --line: #dde3ec; --bg: #f3f5f8; --white: #fff; --ok: #2e7d32;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font: 15px/1.6 "Segoe UI", Roboto, Arial, sans-serif; color: var(--text); background: var(--bg); }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--orange); }
img { max-width: 100%; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
button, input, select, textarea { font: inherit; }

/* Thanh trên cùng */
.topbar { background: var(--blue-d); color: #cfe0f7; font-size: 13px; }
.topbar .wrap { display: flex; flex-wrap: wrap; gap: 6px 22px; padding-top: 6px; padding-bottom: 6px; }
.topbar a { color: #fff; }
.topbar .sp { flex: 1; }

/* Banner đầu trang */
.header { background: #0c2340; position: relative; overflow: hidden; }
.header::before { content: ""; position: absolute; inset: -12px; background: url(/uploads/banner9.jpg) center/cover no-repeat; filter: blur(6px) saturate(1.2); }
.header::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.97) 0, rgba(255,255,255,.92) 24%, rgba(8,35,70,.5) 46%, rgba(8,35,70,.45) 72%, rgba(8,35,70,.3) 100%); }
.header .wrap { z-index: 1; }
.header .wrap { position: relative; display: flex; align-items: center; gap: 18px; min-height: 130px; }
.brand { display: flex; align-items: center; gap: 14px; color: inherit; }
.brand img { width: 92px; height: 92px; border-radius: 8px; background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,.15); }
.brand .name { font-weight: 800; font-size: 28px; line-height: 1.15; color: var(--red); text-shadow: 0 1px 0 #fff; letter-spacing: .5px; }
.brand .sub { color: var(--blue-d); font-weight: 600; font-size: 14px; }
.slogan { flex: 1; text-align: center; color: #fff; text-shadow: 0 2px 6px rgba(0,0,0,.6); font-weight: 700; font-size: 20px; letter-spacing: .5px; }
.slogan small { display: block; font-weight: 500; font-size: 14px; opacity: .95; }
.applink { display: flex; flex-direction: column; align-items: center; gap: 4px; color: #fff; text-align: center; font-size: 12px; font-weight: 600; text-shadow: 0 1px 3px rgba(0,0,0,.7); }
.applink img { width: 84px; height: 70px; border-radius: 8px; background: #fff; padding: 2px; box-shadow: 0 2px 10px rgba(0,0,0,.35); transition: transform .15s; }
.applink:hover { color: #ffd54f; }
.applink:hover img { transform: scale(1.06); }

/* Menu */
.nav { background: linear-gradient(#1565c0, var(--blue)); position: sticky; top: 0; z-index: 50; box-shadow: 0 2px 6px rgba(0,0,0,.2); }
.nav .wrap { display: flex; align-items: center; }
.nav a.m { color: #fff; padding: 12px 15px; font-weight: 600; font-size: 14px; text-transform: uppercase; display: block; white-space: nowrap; }
.nav a.m:hover, .nav a.m.on { background: rgba(255,255,255,.18); color: #fff; }
.nav .sp { flex: 1; }
.nav .cart { background: var(--orange); border-radius: 4px; margin: 5px 0; padding: 7px 14px; }
.nav .cart b { background: #fff; color: var(--orange); border-radius: 10px; padding: 0 7px; margin-left: 6px; font-size: 12px; }
.nav .burger { display: none; background: none; border: 0; color: #fff; font-size: 24px; padding: 6px 10px; cursor: pointer; }

main { min-height: 60vh; }
.section { padding: 26px 0; }
.box { background: var(--white); border: 1px solid var(--line); border-radius: 6px; }
.title-bar { display: flex; align-items: center; gap: 10px; border-bottom: 2px solid var(--blue); margin: 0 0 16px; }
.title-bar h2 { margin: 0; background: var(--blue); color: #fff; font-size: 15px; padding: 8px 16px; text-transform: uppercase; border-radius: 4px 4px 0 0; }
.title-bar .sp { flex: 1; }
.title-bar a { font-size: 13px; }
h1.page { color: var(--blue-d); font-size: 24px; margin: 0 0 14px; }
.crumb { font-size: 13px; color: var(--muted); margin-bottom: 12px; }

/* Slider */
.slider { position: relative; overflow: hidden; border-radius: 6px; background: #fff; aspect-ratio: 1080/395; }
.slider img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .8s; }
.slider img.on { opacity: 1; }
.slider .dots { position: absolute; bottom: 10px; left: 0; right: 0; text-align: center; }
.slider .dots span { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.6); margin: 0 4px; cursor: pointer; border: 1px solid rgba(0,0,0,.2); }
.slider .dots span.on { background: var(--orange); }
.hero { display: grid; grid-template-columns: 2.2fr 1fr; gap: 18px; }
.hotnews { padding: 0; overflow: hidden; }
.hotnews h3 { margin: 0; background: var(--blue); color: #fff; font-size: 14px; padding: 9px 14px; text-transform: uppercase; }
.hotnews a { display: flex; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--line); color: var(--text); font-weight: 600; font-size: 13.5px; }
.hotnews a:hover { background: var(--blue-l); }
.hotnews img { width: 80px; height: 60px; object-fit: cover; border-radius: 4px; flex: none; }

/* Dịch vụ */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.svc { padding: 18px; display: flex; gap: 14px; transition: box-shadow .15s, transform .15s; color: var(--text); }
.svc:hover { box-shadow: 0 6px 18px rgba(11,78,162,.15); transform: translateY(-2px); color: var(--text); }
.svc .ic { width: 52px; height: 52px; border-radius: 50%; background: var(--blue-l); color: var(--blue); display: grid; place-items: center; flex: none; }
.svc .ic svg { width: 28px; height: 28px; }
.svc h3 { margin: 0 0 4px; font-size: 16px; color: var(--blue-d); }
.svc p { margin: 0; font-size: 13.5px; color: var(--muted); }

/* Sản phẩm */
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .15s; }
.card:hover { box-shadow: 0 6px 18px rgba(0,0,0,.1); }
.card .im { aspect-ratio: 4/3; background: #fff; display: grid; place-items: center; padding: 10px; border-bottom: 1px solid var(--line); }
.card .im img { max-height: 100%; object-fit: contain; }
.card .bd { padding: 12px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.card .t { font-weight: 700; font-size: 14px; color: var(--blue-d); line-height: 1.35; }
.card .t:hover { color: var(--orange); }
.card .cat { font-size: 12px; color: var(--muted); }
.price { color: var(--red); font-weight: 700; }
.price small { color: var(--muted); font-weight: 400; }
.card .act { display: flex; gap: 8px; margin-top: auto; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 0; border-radius: 4px; padding: 8px 14px; cursor: pointer; font-weight: 600; background: var(--blue); color: #fff; font-size: 14px; }
.btn:hover { background: var(--blue-d); color: #fff; }
.btn.o { background: var(--orange); }
.btn.o:hover { background: #d93a00; }
.btn.g { background: #fff; color: var(--blue); border: 1px solid var(--blue); }
.btn.g:hover { background: var(--blue-l); color: var(--blue); }
.btn.sm { padding: 5px 10px; font-size: 13px; }
.btn.red { background: var(--red); }
.btn:disabled { opacity: .55; cursor: default; }

.shop { display: grid; grid-template-columns: 250px 1fr; gap: 18px; align-items: start; }
.side h3 { margin: 0; background: var(--blue); color: #fff; padding: 9px 14px; font-size: 14px; text-transform: uppercase; border-radius: 6px 6px 0 0; }
.side a { display: flex; justify-content: space-between; padding: 9px 14px; border-bottom: 1px solid var(--line); color: var(--text); font-size: 14px; }
.side a.on, .side a:hover { background: var(--blue-l); color: var(--blue); font-weight: 600; }
.side a span { color: var(--muted); font-size: 12px; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; align-items: center; }
.toolbar input, .toolbar select { padding: 8px 10px; border: 1px solid var(--line); border-radius: 4px; background: #fff; }
.toolbar input { flex: 1; min-width: 200px; }
.shm-banner { background: linear-gradient(120deg, var(--blue-d), #1565c0 60%, var(--orange)); color: #fff; border-radius: 6px; padding: 18px 22px; margin-bottom: 16px; display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.shm-banner h2 { margin: 0 0 4px; font-size: 20px; }
.shm-banner p { margin: 0; opacity: .95; font-size: 14px; }
.shm-banner .sp { flex: 1; }

.pdetail { display: grid; grid-template-columns: 1fr 1.2fr; gap: 24px; padding: 20px; }
.pdetail .im { border: 1px solid var(--line); border-radius: 6px; display: grid; place-items: center; padding: 16px; background: #fff; }
.pdetail h1 { font-size: 22px; color: var(--blue-d); margin: 0 0 10px; }
.pdetail .price { font-size: 24px; }
.qty { display: inline-flex; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; }
.qty button { width: 34px; border: 0; background: var(--blue-l); cursor: pointer; font-size: 16px; }
.qty input { width: 54px; text-align: center; border: 0; border-left: 1px solid var(--line); border-right: 1px solid var(--line); padding: 6px 0; }
.content { line-height: 1.7; overflow-wrap: anywhere; }
.content img { height: auto !important; border-radius: 4px; }
.content table { border-collapse: collapse; max-width: 100%; }
.content td, .content th { border: 1px solid var(--line); padding: 6px 8px; }
.content table.info th { text-align: left; background: var(--blue-l); width: 170px; }
.content h3 { color: var(--blue-d); border-left: 4px solid var(--orange); padding-left: 10px; }
.content [style*="margin-left"] { margin-left: 0 !important; }
.content [style*="width"] { max-width: 100%; }
.badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.badge { background: var(--blue-l); color: var(--blue-d); border-radius: 12px; padding: 2px 10px; font-size: 12px; }
.note { font-size: 13px; color: var(--muted); }

/* Tin tức */
.news-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.news-card .im { aspect-ratio: 16/10; padding: 0; }
.news-card .im img { width: 100%; height: 100%; object-fit: cover; }
.news-card .date { font-size: 12px; color: var(--muted); }
.news-card .sum { font-size: 13.5px; color: #444; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.tabs a { padding: 6px 12px; border-radius: 16px; background: #fff; border: 1px solid var(--line); font-size: 13px; color: var(--text); }
.tabs a.on, .tabs a:hover { background: var(--blue); color: #fff; border-color: var(--blue); }
.article { padding: 22px 26px; }
.article h1 { color: var(--blue-d); font-size: 24px; margin: 0 0 6px; }
.two { display: grid; grid-template-columns: 1fr 300px; gap: 18px; align-items: start; }

/* Đối tác */
.partners { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.partners div { background: #fff; border: 1px solid var(--line); border-radius: 6px; display: grid; place-items: center; padding: 10px; height: 90px; }
.partners img { max-height: 64px; object-fit: contain; filter: grayscale(.2); }

/* Giỏ hàng & form */
table.tb { width: 100%; border-collapse: collapse; background: #fff; }
.tb th, .tb td { border-bottom: 1px solid var(--line); padding: 10px; text-align: left; vertical-align: middle; }
.tb th { background: var(--blue-l); color: var(--blue-d); font-size: 13px; text-transform: uppercase; }
.tb td.n, .tb th.n { text-align: right; white-space: nowrap; }
.tb img { width: 64px; height: 50px; object-fit: contain; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 14px; }
.form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; font-weight: 600; color: #444; }
.form label.full { grid-column: 1 / -1; }
.form input, .form textarea, .form select { padding: 9px 10px; border: 1px solid #cfd6e0; border-radius: 4px; font-weight: 400; background: #fff; }
.form input:focus, .form textarea:focus, .form select:focus { outline: 2px solid #90caf9; border-color: var(--blue); }
.form textarea { min-height: 90px; resize: vertical; }
.checkout { display: grid; grid-template-columns: 1.4fr 1fr; gap: 18px; align-items: start; }
.sum-box { padding: 16px; }
.sum-box .row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.sum-box .row.total { font-size: 18px; font-weight: 700; color: var(--red); border: 0; }
.alert { padding: 12px 14px; border-radius: 6px; margin-bottom: 12px; }
.alert.ok { background: #e8f5e9; color: var(--ok); border: 1px solid #a5d6a7; }
.alert.err { background: #ffebee; color: #c62828; border: 1px solid #ef9a9a; }
.empty { text-align: center; padding: 40px 16px; color: var(--muted); }
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact .info p { margin: 6px 0; }
.map { width: 100%; height: 320px; border: 0; border-radius: 6px; }

/* Chân trang */
footer { background: var(--blue-d); color: #cfe0f7; margin-top: 30px; font-size: 14px; }
footer .wrap { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 24px; padding-top: 26px; padding-bottom: 20px; }
footer h4 { color: #fff; margin: 0 0 10px; text-transform: uppercase; font-size: 14px; }
footer a { color: #fff; }
footer p { margin: 4px 0; }
footer .copy { background: #062c5c; text-align: center; padding: 10px; font-size: 13px; }
.toast { position: fixed; right: 16px; bottom: 16px; background: #263238; color: #fff; padding: 10px 16px; border-radius: 6px; box-shadow: 0 4px 14px rgba(0,0,0,.3); z-index: 99; opacity: 0; transform: translateY(10px); transition: .2s; pointer-events: none; }
.toast.on { opacity: 1; transform: none; }

@media (max-width: 960px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
  .services, .news-list { grid-template-columns: repeat(2, 1fr); }
  .hero, .two, .checkout, .contact, .pdetail { grid-template-columns: 1fr; }
  .shop { grid-template-columns: 1fr; }
  .slogan { display: none; }
  .partners { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 720px) {
  .nav .burger { display: block; }
  .nav .wrap { flex-wrap: wrap; }
  .nav .menu { display: none; width: 100%; order: 3; }
  .nav .menu.open { display: block; }
  .nav .sp { display: none; }
  .nav .cart { margin-left: auto; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .services, .news-list, .form { grid-template-columns: 1fr; }
  footer .wrap { grid-template-columns: 1fr; }
  .brand .name { font-size: 17px; }
  .brand .sub { display: none; }
  .header::after { background: linear-gradient(90deg, rgba(255,255,255,.97) 0, rgba(255,255,255,.9) 60%, rgba(8,35,70,.4) 100%); }
  .brand img { width: 64px; height: 64px; }
  .applink img { width: 60px; height: 50px; }
  .header .wrap { min-height: 96px; gap: 10px; }
  .tb .hide-m { display: none; }
  .article { padding: 16px; }
}
@media (min-width: 721px) { .nav .menu { display: flex; } }