:root {
    --primary: #f5b51b;
    --primary-dark: #d99500;
    --primary-soft: #fff7df;
    --ink: #111827;
    --muted: #667085;
    --navy: #0b1220;
    --navy-light: #131e31;
    --surface: #ffffff;
    --canvas: #f5f7fb;
    --border: #e4e8ef;
    --success: #139a5b;
    --danger: #df3c4f;
    --info: #0878de;
    --font: 'Outfit', sans-serif;
    --shadow-sm: 0 2px 10px rgba(16, 24, 40, .06);
    --shadow-md: 0 12px 30px rgba(16, 24, 40, .10);
    --shadow-lg: 0 24px 60px rgba(4, 12, 28, .16);
    --radius-sm: 10px;
    --radius: 16px;
    --radius-lg: 24px;
    --transition: .22s ease;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--canvas); line-height: 1.6; -webkit-font-smoothing: antialiased; }
body.menu-open, body.lightbox-open { overflow: hidden; }
h1, h2, h3, h4, p, ul, dl, dd { margin-top: 0; }
a { color: inherit; text-decoration: none; transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition); }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
img { display: block; max-width: 100%; }
ul { margin: 0; padding: 0; list-style: none; }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.main-content { min-height: 50vh; }
.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: fixed; left: 16px; top: -60px; z-index: 4000; background: var(--primary); color: #111; padding: 10px 16px; border-radius: 8px; font-weight: 700; }
.skip-link:focus { top: 12px; }
.text-center { text-align: center; }
.text-primary { color: var(--primary-dark); }
.text-white { color: #fff; }
.text-warning { color: #e89d00; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-info { color: var(--info); }
.mt-4 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1.5rem; }
.section { padding: 84px 0; }
.section-white { background: var(--surface); }
.section-heading { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 30px; }
.section-heading-copy { max-width: 650px; }
.eyebrow { display: inline-flex; gap: 8px; align-items: center; margin-bottom: 10px; color: #9b6a00; font-size: .82rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.eyebrow::before { content: ''; width: 24px; height: 2px; background: var(--primary); }
.section-title { margin: 0; font-size: clamp(1.75rem, 3vw, 2.5rem); line-height: 1.15; letter-spacing: -.03em; }
.section-desc { margin: 10px 0 0; color: var(--muted); font-size: 1.05rem; }
.section-link { display: inline-flex; align-items: center; gap: 8px; color: #725100; font-weight: 700; white-space: nowrap; }
.section-link:hover { color: var(--primary-dark); transform: translateX(3px); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 46px; padding: 10px 21px; border: 1px solid transparent; border-radius: 12px; font-weight: 700; line-height: 1.1; cursor: pointer; }
.btn-primary { background: var(--primary); color: #17120a; box-shadow: 0 7px 18px rgba(245, 181, 27, .22); }
.btn-primary:hover { background: #ffc533; transform: translateY(-2px); box-shadow: 0 10px 25px rgba(245, 181, 27, .32); }
.btn-outline { background: #fff; border-color: #d5dae3; color: var(--ink); }
.btn-outline:hover { border-color: var(--primary-dark); color: #725100; transform: translateY(-2px); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-light); transform: translateY(-2px); }
.btn-zalo { background: #0869e8; color: #fff; }
.btn-facebook { background: #1877f2; color: #fff; }
.btn-phone { background: var(--success); color: #fff; }
.btn-block { width: 100%; }

/* Header */
.main-header { position: sticky; top: 0; z-index: 1000; background: rgba(11, 18, 32, .97); color: #fff; box-shadow: 0 8px 30px rgba(5, 10, 20, .18); backdrop-filter: blur(14px); }
.topbar { border-bottom: 1px solid rgba(255,255,255,.08); background: #080e19; }
.topbar-inner { min-height: 34px; display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: .78rem; color: #b5bfce; }
.topbar-inner p { margin: 0; }
.topbar-inner i { color: var(--primary); margin-right: 5px; }
.topbar-links { display: flex; gap: 22px; }
.topbar-links a:hover { color: #fff; }
.header-container { min-height: 76px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.logo-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: var(--primary); color: var(--navy); font-size: 1.2rem; transform: rotate(-3deg); box-shadow: 0 8px 18px rgba(245,181,27,.2); }
.logo-copy { display: flex; flex-direction: column; line-height: 1; }
.logo-copy strong { color: #fff; font-size: 1.03rem; letter-spacing: .035em; }
.logo-copy small { margin-top: 6px; color: var(--primary); font-size: .63rem; font-weight: 700; letter-spacing: .18em; }
.nav-list { display: flex; align-items: center; gap: 28px; }
.nav-list a { position: relative; padding: 27px 0; color: #cad1dc; font-size: .95rem; font-weight: 600; }
.nav-list a::after { content: ''; position: absolute; left: 50%; bottom: 18px; width: 0; height: 3px; border-radius: 3px; background: var(--primary); transform: translateX(-50%); transition: width var(--transition); }
.nav-list a:hover, .nav-list a.active { color: #fff; }
.nav-list a:hover::after, .nav-list a.active::after { width: 22px; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.search-bar form { display: flex; align-items: center; width: 205px; min-height: 40px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.1); border-radius: 11px; transition: border-color var(--transition), background var(--transition); }
.search-bar form:focus-within { background: rgba(255,255,255,.12); border-color: rgba(245,181,27,.7); }
.search-bar input { width: 100%; min-width: 0; padding: 8px 4px 8px 13px; border: 0; outline: 0; background: transparent; color: #fff; font-size: .88rem; }
.search-bar input::placeholder { color: #9fa8b6; }
.search-bar button { padding: 9px 12px; border: 0; background: transparent; color: var(--primary); cursor: pointer; }
.member-link { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; color: #e8ecf2; font-size: .88rem; font-weight: 600; }
.member-link:hover { color: var(--primary); }
.mobile-menu-btn, .close-menu-btn { display: none; padding: 8px; border: 0; background: transparent; color: #fff; font-size: 1.3rem; cursor: pointer; }
.mobile-menu-overlay { position: fixed; inset: 0; z-index: 1998; visibility: hidden; opacity: 0; background: rgba(4,8,15,.65); backdrop-filter: blur(3px); transition: opacity var(--transition), visibility var(--transition); }
.mobile-menu-overlay.active { visibility: visible; opacity: 1; }
.mobile-menu { position: fixed; inset: 0 0 0 auto; z-index: 1999; width: min(350px, 88vw); padding: 22px; background: var(--navy); color: #fff; box-shadow: -15px 0 40px rgba(0,0,0,.3); transform: translateX(105%); transition: transform .28s ease; }
.mobile-menu.active { transform: translateX(0); }
.mobile-menu-header { display: flex; align-items: center; justify-content: space-between; padding-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,.1); }
.mobile-menu .logo-mark { width: 38px; height: 38px; }
.mobile-menu .close-menu-btn { display: block; }
.mobile-search { display: flex; margin: 22px 0; overflow: hidden; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); border-radius: 12px; }
.mobile-search input { width: 100%; padding: 11px 14px; border: 0; outline: 0; background: transparent; color: #fff; }
.mobile-search button { padding: 10px 15px; border: 0; background: transparent; color: var(--primary); }
.mobile-nav-list { display: grid; gap: 5px; }
.mobile-nav-list a { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: 10px; color: #d9dee7; font-weight: 600; }
.mobile-nav-list a i { width: 20px; color: var(--primary); }
.mobile-nav-list a:hover { color: #fff; background: rgba(255,255,255,.07); }
.mobile-contact { position: absolute; left: 22px; right: 22px; bottom: 24px; padding: 15px; border-radius: 12px; background: rgba(245,181,27,.1); border: 1px solid rgba(245,181,27,.25); }
.mobile-contact span { display: block; color: #b6bfcc; font-size: .8rem; }
.mobile-contact a { color: var(--primary); font-weight: 800; font-size: 1.1rem; }

/* Hero */
.hero-banner { position: relative; overflow: hidden; min-height: 600px; display: flex; align-items: center; color: #fff; background: radial-gradient(circle at 78% 22%, rgba(245,181,27,.22), transparent 25%), radial-gradient(circle at 20% 85%, rgba(27,83,150,.28), transparent 28%), linear-gradient(120deg, #080e19 0%, #111e33 64%, #111827 100%); }
.hero-banner::before { content: ''; position: absolute; inset: 0; opacity: .22; background-image: linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(to right, #000, transparent 80%); }
.hero-banner::after { content: ''; position: absolute; width: 430px; height: 430px; right: -120px; bottom: -220px; border: 70px solid rgba(245,181,27,.07); border-radius: 50%; }
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(310px, .7fr); gap: 80px; align-items: center; padding: 86px 0; }
.hero-kicker { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 20px; padding: 7px 12px; border: 1px solid rgba(245,181,27,.3); border-radius: 999px; background: rgba(245,181,27,.08); color: #f8ca5f; font-size: .8rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.hero-title { max-width: 760px; margin-bottom: 20px; font-size: clamp(2.6rem, 5.2vw, 4.8rem); line-height: 1.02; letter-spacing: -.055em; }
.hero-title span { color: var(--primary); }
.hero-subtitle { max-width: 650px; margin-bottom: 30px; color: #c7d0dd; font-size: clamp(1.05rem, 1.8vw, 1.22rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-actions .btn { min-height: 52px; padding-inline: 25px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 35px; color: #b9c2cf; font-size: .88rem; }
.hero-trust span { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust i { color: var(--primary); }
.hero-showcase { position: relative; }
.hero-showcase-card { position: relative; z-index: 1; padding: 28px; border: 1px solid rgba(255,255,255,.13); border-radius: 28px; background: linear-gradient(145deg, rgba(255,255,255,.11), rgba(255,255,255,.045)); box-shadow: 0 30px 80px rgba(0,0,0,.35); backdrop-filter: blur(12px); }
.showcase-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.showcase-label { color: #bac4d1; font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; font-weight: 700; }
.showcase-live { display: inline-flex; align-items: center; gap: 6px; color: #82e9b6; font-size: .78rem; font-weight: 700; }
.showcase-live::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: #34d585; box-shadow: 0 0 0 5px rgba(52,213,133,.13); }
.showcase-icon { display: grid; place-items: center; width: 104px; height: 104px; margin: 10px auto 24px; border-radius: 28px; background: linear-gradient(135deg, var(--primary), #ffe284); color: var(--navy); font-size: 2.8rem; transform: rotate(-4deg); box-shadow: 0 20px 45px rgba(245,181,27,.25); }
.showcase-title { margin-bottom: 8px; text-align: center; font-size: 1.45rem; }
.showcase-desc { margin-bottom: 25px; text-align: center; color: #aeb8c7; }
.showcase-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 9px; }
.showcase-stat { padding: 12px 8px; border-radius: 12px; background: rgba(4,10,20,.35); text-align: center; }
.showcase-stat strong { display: block; color: var(--primary); font-size: 1.06rem; }
.showcase-stat span { color: #9da8b8; font-size: .72rem; }

/* Page heading */
.page-hero { padding: 62px 0 58px; color: #fff; background: radial-gradient(circle at 80% 20%, rgba(245,181,27,.18), transparent 24%), linear-gradient(120deg, #0a1220, #15233a); }
.page-hero-inner { display: flex; justify-content: space-between; gap: 28px; align-items: end; }
.page-hero h1 { margin-bottom: 8px; font-size: clamp(2rem, 4vw, 3.1rem); letter-spacing: -.04em; line-height: 1.1; }
.page-hero p { max-width: 650px; margin-bottom: 0; color: #b8c2d0; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 13px; color: #9ea9b8; font-size: .84rem; }
.breadcrumb i { font-size: .62rem; }
.breadcrumb a:hover, .breadcrumb span { color: var(--primary); }
.page-count { flex: 0 0 auto; padding: 11px 16px; border: 1px solid rgba(255,255,255,.14); border-radius: 12px; background: rgba(255,255,255,.06); color: #e4e8ef; font-size: .9rem; }
.page-count strong { color: var(--primary); }

/* Products */
.product-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 22px; }
.product-card { display: flex; min-width: 0; flex-direction: column; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-sm); transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); }
.product-card:hover { border-color: #d8c27d; transform: translateY(-5px); box-shadow: var(--shadow-md); }
.product-image { position: relative; aspect-ratio: 16/10; overflow: hidden; background: #e9edf3; }
.product-image > a { display: block; width: 100%; height: 100%; }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.product-card:hover .product-image img { transform: scale(1.035); }
.product-placeholder { display: grid; width: 100%; height: 100%; place-items: center; background: linear-gradient(145deg,#e9edf3,#f7f8fa); color: #b4bdca; font-size: 2.2rem; }
.product-status { position: absolute; top: 12px; right: 12px; }
.status-pill { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 999px; font-size: .73rem; font-weight: 800; line-height: 1; box-shadow: 0 4px 10px rgba(0,0,0,.1); }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status-available { background: #e8f8f0; color: #087444; }
.status-reserved { background: #fff4d7; color: #916200; }
.status-sold { background: #f4f5f7; color: #687284; }
.status-draft, .status-hidden { background: #eceff3; color: #5b6574; }
.product-info { display: flex; flex: 1; flex-direction: column; padding: 19px; }
.product-code { display: flex; align-items: center; gap: 6px; margin-bottom: 8px; color: #7a8493; font-size: .76rem; font-weight: 700; letter-spacing: .035em; text-transform: uppercase; }
.product-code::before { content: '#'; color: var(--primary-dark); }
.product-title { display: -webkit-box; min-height: 45px; margin-bottom: 12px; overflow: hidden; color: var(--ink); font-size: 1.04rem; line-height: 1.35; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.product-price { margin-bottom: 14px; color: var(--danger); font-size: 1.35rem; font-weight: 800; letter-spacing: -.02em; }
.product-stats { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin-top: auto; padding: 13px 0; border-top: 1px solid #edf0f4; color: #667085; font-size: .8rem; }
.product-stats span { display: inline-flex; align-items: center; gap: 5px; }
.product-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.product-actions .btn { min-height: 40px; padding: 8px 10px; border-radius: 10px; font-size: .8rem; }
.empty-state { grid-column: 1/-1; padding: 60px 25px; border: 1px dashed #ced5df; border-radius: var(--radius); background: #fff; text-align: center; }
.empty-state i { display: block; margin-bottom: 15px; color: #c1c9d4; font-size: 3rem; }
.empty-state h3 { margin-bottom: 6px; }
.empty-state p { margin-bottom: 20px; color: var(--muted); }

/* Process */
.process-grid { position: relative; display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.process-card { position: relative; padding: 28px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }
.process-number { position: absolute; top: 20px; right: 22px; color: #edf0f4; font-size: 3.2rem; font-weight: 800; line-height: 1; }
.process-icon { display: grid; width: 50px; height: 50px; margin-bottom: 20px; place-items: center; border-radius: 14px; background: var(--primary-soft); color: #a67400; font-size: 1.15rem; }
.process-card h3 { margin-bottom: 8px; font-size: 1.15rem; }
.process-card p { margin: 0; color: var(--muted); font-size: .94rem; }

/* Catalog */
.catalog-layout { display: grid; grid-template-columns: 270px minmax(0,1fr); gap: 28px; padding: 48px 0 80px; align-items: start; }
.filter-card { position: sticky; top: 130px; padding: 22px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.filter-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; padding-bottom: 15px; border-bottom: 1px solid var(--border); }
.filter-title h2 { margin: 0; font-size: 1.08rem; }
.filter-title i { color: var(--primary-dark); }
.filter-field { margin-bottom: 16px; }
.filter-field label, .form-field label { display: block; margin-bottom: 7px; color: #354052; font-size: .85rem; font-weight: 700; }
.form-control, .form-field input, .form-field select, .form-field textarea { width: 100%; min-height: 44px; padding: 9px 12px; border: 1px solid #d6dce5; border-radius: 10px; outline: 0; background: #fff; color: var(--ink); transition: border-color var(--transition), box-shadow var(--transition); }
textarea.form-control, .form-field textarea { min-height: 120px; resize: vertical; }
.form-control:focus, .form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: #d99f14; box-shadow: 0 0 0 4px rgba(245,181,27,.14); }
.filter-actions { display: grid; gap: 9px; margin-top: 22px; }
.results-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 44px; margin-bottom: 20px; }
.results-bar h2 { margin: 0; font-size: 1.08rem; }
.results-bar p { margin: 0; color: var(--muted); }
.catalog-main .product-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
.pagination { display: flex; justify-content: center; flex-wrap: wrap; gap: 7px; margin-top: 38px; }
.pagination .btn { min-width: 42px; min-height: 42px; padding: 8px; }

/* Product detail */
.detail-wrap { padding: 48px 0 80px; }
.detail-layout { display: grid; grid-template-columns: minmax(0,1.08fr) minmax(360px,.92fr); gap: 34px; align-items: start; }
.gallery-card, .detail-card, .content-card, .contact-card, .form-card { border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.gallery-card { padding: 14px; }
.gallery-main { position: relative; display: block; overflow: hidden; width: 100%; margin-bottom: 12px; padding: 0; border: 0; border-radius: 12px; background: #0b1019; cursor: zoom-in; }
.gallery-main:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }
.gallery-main-img { width: 100%; aspect-ratio: 16/10; object-fit: contain; transition: transform .3s ease, opacity .2s ease; }
.gallery-main:hover .gallery-main-img { transform: scale(1.018); opacity: .92; }
.gallery-zoom-hint { position: absolute; left: 12px; bottom: 12px; display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 8px; background: rgba(0,0,0,.68); color: #fff; font-size: .76rem; }
.gallery-count { position: absolute; right: 12px; bottom: 12px; padding: 5px 9px; border-radius: 8px; background: rgba(0,0,0,.65); color: #fff; font-size: .76rem; }
.gallery-thumbs { display: grid; grid-template-columns: repeat(6,1fr); gap: 8px; }
.gallery-thumb { overflow: hidden; aspect-ratio: 1; border: 2px solid transparent; border-radius: 9px; background: #eef1f5; cursor: pointer; }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumb:hover, .gallery-thumb.active { border-color: var(--primary); }
.gallery-empty { display: grid; min-height: 380px; place-items: center; border-radius: 12px; background: #f0f2f5; color: #9ba5b3; text-align: center; }
.gallery-empty i { display: block; margin-bottom: 12px; font-size: 2.8rem; }
.video-section { margin-top: 28px; }
.video-section h2 { font-size: 1.25rem; }
.video-player { margin-bottom: 14px; overflow: hidden; border-radius: var(--radius); background: #000; }
.detail-card { padding: 28px; }
.detail-meta-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 16px; }
.account-code { display: inline-flex; align-items: center; gap: 7px; padding: 7px 11px; border-radius: 9px; background: #f1f3f6; color: #596476; font-size: .8rem; font-weight: 700; }
.detail-title { margin-bottom: 10px; font-size: clamp(1.6rem,3vw,2.15rem); line-height: 1.18; letter-spacing: -.035em; }
.detail-price { margin-bottom: 23px; color: var(--danger); font-size: 2rem; font-weight: 800; }
.detail-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; overflow: hidden; margin-bottom: 23px; border: 1px solid var(--border); border-radius: 12px; background: var(--border); }
.detail-spec { display: flex; align-items: center; gap: 11px; min-width: 0; padding: 14px; background: #fafbfc; }
.detail-spec-wide { grid-column: 1/-1; }
.spec-icon { display: grid; flex: 0 0 auto; width: 34px; height: 34px; place-items: center; border-radius: 9px; background: var(--primary-soft); color: #a57300; }
.detail-spec span { display: block; color: var(--muted); font-size: .72rem; }
.detail-spec strong { display: block; overflow: hidden; font-size: .9rem; text-overflow: ellipsis; white-space: nowrap; }
.detail-description { margin-bottom: 25px; }
.detail-description h2, .purchase-box h2 { margin-bottom: 8px; font-size: 1.08rem; }
.detail-description p { margin: 0; color: var(--muted); white-space: pre-line; }
.purchase-box { padding: 20px; border: 1px solid #f1d98e; border-radius: 13px; background: #fffbef; }
.purchase-box > p { margin-bottom: 14px; color: #746a4c; font-size: .86rem; }
.purchase-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.purchase-actions .btn-phone, .purchase-actions .btn-outline { grid-column: 1/-1; }
.detail-foot-stats { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--border); color: var(--muted); font-size: .8rem; }
.similar-section { margin-top: 75px; }

/* Full-screen product image viewer */
.image-lightbox[hidden] { display: none; }
.image-lightbox { position: fixed; inset: 0; z-index: 3000; display: grid; place-items: center; padding: 18px; color: #fff; }
.image-lightbox-backdrop { position: absolute; inset: 0; background: rgba(3, 7, 14, .94); backdrop-filter: blur(8px); }
.image-lightbox-dialog { position: relative; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; width: min(1380px, 100%); height: min(920px, calc(100vh - 36px)); height: min(920px, calc(100dvh - 36px)); overflow: hidden; border: 1px solid rgba(255,255,255,.13); border-radius: 18px; background: #090e17; box-shadow: 0 30px 90px rgba(0,0,0,.55); }
.image-lightbox-header, .image-lightbox-toolbar { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 13px 16px; background: rgba(9,14,23,.96); }
.image-lightbox-header { border-bottom: 1px solid rgba(255,255,255,.1); }
.image-lightbox-header > div { min-width: 0; }
.image-lightbox-header strong { display: block; overflow: hidden; font-size: .95rem; text-overflow: ellipsis; white-space: nowrap; }
.lightbox-counter { display: block; margin-top: 1px; color: #9faabc; font-size: .78rem; }
.lightbox-icon-btn, .lightbox-zoom-value { display: inline-grid; min-width: 42px; height: 42px; padding: 0 10px; place-items: center; border: 1px solid rgba(255,255,255,.14); border-radius: 11px; background: rgba(255,255,255,.07); color: #fff; cursor: pointer; }
.lightbox-icon-btn:hover, .lightbox-zoom-value:hover { border-color: var(--primary); background: rgba(245,181,27,.13); color: var(--primary); }
.lightbox-icon-btn:focus-visible, .lightbox-zoom-value:focus-visible, .lightbox-nav:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }
.lightbox-stage { position: relative; display: grid; min-height: 0; place-items: center; overflow: hidden; background: #03070d; touch-action: none; user-select: none; }
.lightbox-image { max-width: calc(100% - 120px); max-height: 100%; object-fit: contain; transform: translate3d(var(--pan-x, 0), var(--pan-y, 0), 0) scale(var(--image-zoom, 1)); transition: transform .18s ease; will-change: transform; }
.lightbox-stage.is-zoomed { cursor: grab; }
.lightbox-stage.is-dragging { cursor: grabbing; }
.lightbox-stage.is-dragging .lightbox-image { transition: none; }
.lightbox-nav { position: absolute; z-index: 2; top: 50%; display: grid; width: 48px; height: 56px; padding: 0; place-items: center; border: 1px solid rgba(255,255,255,.13); border-radius: 12px; background: rgba(9,14,23,.72); color: #fff; cursor: pointer; transform: translateY(-50%); }
.lightbox-nav:hover { border-color: var(--primary); color: var(--primary); background: rgba(9,14,23,.96); }
.lightbox-nav:disabled { display: none; }
.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }
.image-lightbox-toolbar { border-top: 1px solid rgba(255,255,255,.1); }
.image-lightbox-toolbar > span { color: #929daf; font-size: .78rem; }
.lightbox-zoom-controls { display: flex; align-items: center; gap: 7px; }
.lightbox-zoom-value { min-width: 66px; font-size: .78rem; font-weight: 700; }

/* Contact + guide */
.contact-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 28px; padding: 55px 0 80px; align-items: stretch; }
.contact-card, .form-card { padding: 30px; }
.contact-card { color: #fff; border: 0; background: radial-gradient(circle at 85% 10%, rgba(245,181,27,.2),transparent 25%), linear-gradient(145deg,#0b1220,#17243a); box-shadow: var(--shadow-md); }
.contact-card h2, .form-card h2 { margin-bottom: 8px; font-size: 1.5rem; }
.contact-card > p { margin-bottom: 28px; color: #b8c1cf; }
.contact-list { display: grid; gap: 16px; }
.contact-list li { display: flex; gap: 13px; align-items: center; }
.contact-list > li > i { display: grid; flex: 0 0 auto; width: 42px; height: 42px; place-items: center; border-radius: 11px; background: rgba(245,181,27,.12); color: var(--primary); }
.contact-list span { display: block; color: #aeb8c7; font-size: .76rem; }
.contact-list a, .contact-list strong { color: #fff; font-size: .98rem; font-weight: 700; }
.online-support { margin-top: 28px; padding-top: 23px; border-top: 1px solid rgba(255,255,255,.1); }
.online-support h3 { margin-bottom: 12px; font-size: .95rem; }
.support-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.working-hours { display: flex; gap: 12px; margin-top: 24px; padding: 15px; border-radius: 12px; background: rgba(255,255,255,.06); color: #c0c8d3; font-size: .86rem; }
.working-hours i { margin-top: 4px; color: var(--primary); }
.working-hours strong { display: block; color: #fff; }
.form-card > p { margin-bottom: 24px; color: var(--muted); }
.contact-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.form-field { margin-bottom: 16px; }
.form-field-wide { grid-column: 1/-1; }
.required { color: var(--danger); }
.consent-label { display: flex !important; align-items: flex-start; gap: 10px; color: var(--muted) !important; font-weight: 400 !important; }
.consent-label input { width: 17px; min-height: 17px; margin-top: 3px; accent-color: var(--primary-dark); }
.form-alert { padding: 13px 15px; border-radius: 10px; margin-bottom: 18px; font-size: .9rem; }
.form-alert-danger { border: 1px solid #f0b9c0; background: #fff0f2; color: #982435; }
.form-alert-success { border: 1px solid #a8dfc5; background: #edfbf4; color: #086c40; }
.form-alert i { margin-right: 7px; }
.guide-wrap { padding: 55px 0 80px; }
.guide-layout { display: grid; grid-template-columns: minmax(0,1fr) 290px; gap: 28px; align-items: start; }
.content-card { padding: 38px; }
.guide-intro { margin-bottom: 30px; color: var(--muted); font-size: 1.05rem; }
.guide-steps { display: grid; gap: 0; }
.guide-step { position: relative; display: grid; grid-template-columns: 48px 1fr; gap: 17px; padding-bottom: 29px; }
.guide-step:not(:last-child)::before { content: ''; position: absolute; top: 49px; bottom: 0; left: 23px; width: 2px; background: #e5e9ef; }
.guide-step-number { z-index: 1; display: grid; width: 48px; height: 48px; place-items: center; border-radius: 14px; background: var(--primary); color: var(--navy); font-weight: 800; box-shadow: 0 7px 15px rgba(245,181,27,.2); }
.guide-step h2 { margin: 2px 0 7px; font-size: 1.13rem; }
.guide-step p { margin: 0; color: var(--muted); }
.guide-step a { color: #8a6000; font-weight: 700; }
.warning-box { margin-top: 5px; padding: 20px; border: 1px solid #f0c6ca; border-radius: 13px; background: #fff5f6; }
.warning-box h2 { margin-bottom: 10px; color: #a72636; font-size: 1.05rem; }
.warning-box ul { padding-left: 20px; color: #65484c; list-style: disc; }
.warning-box li + li { margin-top: 7px; }
.guide-sidebar { position: sticky; top: 130px; display: grid; gap: 15px; }
.guide-help { padding: 23px; border-radius: var(--radius); background: var(--navy); color: #fff; }
.guide-help i { margin-bottom: 14px; color: var(--primary); font-size: 1.7rem; }
.guide-help h3 { margin-bottom: 7px; }
.guide-help p { color: #abb5c4; font-size: .88rem; }
.guide-help .btn { width: 100%; }
.verified-card { padding: 18px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }
.verified-card span { display: block; color: var(--muted); font-size: .76rem; }
.verified-card strong { color: var(--ink); font-size: 1.08rem; }

/* Auth + account */
.auth-page { min-height: 70vh; display: grid; place-items: center; padding: 64px 20px; background: radial-gradient(circle at 10% 10%, rgba(245,181,27,.12),transparent 22%), var(--canvas); }
.auth-card, .profile-card { width: 100%; max-width: 470px; padding: 32px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-md); }
.auth-card-wide { max-width: 760px; }
.auth-card h1 { margin-bottom: 5px; text-align: center; font-size: 2rem; }
.auth-subtitle { margin-bottom: 24px; text-align: center; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 15px; }
.auth-submit { width: 100%; margin-top: 4px; }
.auth-footer { margin: 20px 0 0; text-align: center; color: var(--muted); }
.auth-footer a { color: #8a6200; font-weight: 800; }
.account-page { min-height: 62vh; padding-top: 56px; padding-bottom: 70px; }
.account-heading { display: flex; justify-content: space-between; gap: 20px; align-items: center; margin-bottom: 24px; }
.account-heading h1 { margin-bottom: 4px; }
.account-heading p { margin: 0; color: var(--muted); }
.profile-card { max-width: none; }
.profile-list > div { display: grid; grid-template-columns: 220px 1fr; gap: 20px; padding: 15px 0; border-bottom: 1px solid var(--border); }
.profile-list > div:last-child { border-bottom: 0; }
.profile-list dt { font-weight: 700; }
.profile-list dd { color: var(--muted); }

/* Footer */
.main-footer { padding-top: 64px; background: #080e19; color: #adb6c4; }
.footer-container { display: grid; grid-template-columns: 1.25fr .75fr 1fr; gap: 70px; padding-bottom: 50px; }
.footer-desc { max-width: 390px; margin: 22px 0 0; font-size: .91rem; }
.footer-title { margin-bottom: 18px; color: #fff; font-size: 1rem; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { font-size: .9rem; }
.footer-links a:hover { color: var(--primary); padding-left: 4px; }
.social-links { display: flex; gap: 9px; margin-top: 20px; }
.social-links a { display: grid; min-width: 39px; height: 39px; padding: 0 10px; place-items: center; border: 1px solid rgba(255,255,255,.1); border-radius: 10px; background: rgba(255,255,255,.05); color: #fff; font-size: .78rem; font-weight: 800; }
.social-links a:hover { border-color: var(--primary); background: var(--primary); color: var(--navy); transform: translateY(-2px); }
.footer-contact { display: grid; gap: 15px; }
.footer-contact li { display: flex; gap: 11px; align-items: flex-start; }
.footer-contact > li > i { width: 18px; margin-top: 4px; color: var(--primary); }
.footer-contact span { display: block; color: #778397; font-size: .72rem; }
.footer-contact a, .footer-contact p { margin: 0; color: #dce1e8; font-size: .88rem; }
.footer-contact a:hover { color: var(--primary); }
.footer-bottom { padding: 18px 0; border-top: 1px solid rgba(255,255,255,.08); background: #060b13; }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; color: #778293; font-size: .78rem; }
.footer-bottom p { margin: 0; }
.footer-bottom i { margin-right: 5px; color: var(--primary); }
.floating-contact { position: fixed; right: 22px; bottom: 22px; z-index: 900; display: grid; gap: 9px; }
.floating-btn { display: grid; width: 50px; height: 50px; place-items: center; border: 3px solid #fff; border-radius: 50%; color: #fff; box-shadow: 0 8px 25px rgba(5,12,25,.2); font-weight: 800; }
.floating-btn:hover { transform: translateY(-3px) scale(1.03); }
.floating-zalo { background: #0869e8; font-size: .66rem; }
.floating-phone { background: var(--success); }

@media (max-width: 1100px) {
    .main-nav { display: none; }
    .mobile-menu-btn { display: block; }
    .product-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
    .catalog-main .product-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .hero-inner { gap: 45px; }
}
@media (max-width: 860px) {
    .container { width: min(100% - 30px, 1180px); }
    .section { padding: 64px 0; }
    .topbar-inner > p { display: none; }
    .topbar-inner { justify-content: flex-end; }
    .hero-inner { grid-template-columns: 1fr; padding: 70px 0; }
    .hero-showcase { display: none; }
    .hero-banner { min-height: auto; }
    .product-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .process-grid { grid-template-columns: 1fr; }
    .catalog-layout { grid-template-columns: 1fr; }
    .filter-card { position: static; }
    .catalog-main .product-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .detail-layout, .contact-layout, .guide-layout { grid-template-columns: 1fr; }
    .guide-sidebar { position: static; grid-template-columns: 1fr 1fr; }
    .footer-container { grid-template-columns: 1fr 1fr; gap: 40px; }
    .footer-brand { grid-column: 1/-1; }
}
@media (max-width: 620px) {
    .container { width: min(100% - 24px, 1180px); }
    .topbar-links { width: 100%; justify-content: space-between; gap: 10px; }
    .header-container { min-height: 68px; }
    .header-actions { gap: 5px; }
    .search-bar, .member-link { display: none; }
    .logo-mark { width: 38px; height: 38px; border-radius: 10px; }
    .logo-copy strong { font-size: .92rem; }
    .logo-copy small { font-size: .55rem; }
    .hero-title { font-size: 2.65rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-actions { display: grid; }
    .hero-actions .btn { width: 100%; }
    .hero-trust { display: grid; gap: 10px; }
    .section-heading { display: block; }
    .section-link { margin-top: 15px; }
    .product-grid, .catalog-main .product-grid { grid-template-columns: 1fr; }
    .product-card { border-radius: 14px; }
    .product-title { min-height: auto; }
    .page-hero { padding: 42px 0; }
    .page-hero-inner { display: block; }
    .page-count { display: inline-block; margin-top: 18px; }
    .catalog-layout, .detail-wrap, .contact-layout, .guide-wrap { padding-top: 28px; padding-bottom: 55px; }
    .filter-card, .detail-card, .contact-card, .form-card, .content-card { padding: 21px; }
    .results-bar { display: block; }
    .results-bar p { margin-top: 5px; }
    .gallery-thumbs { grid-template-columns: repeat(5,1fr); }
    .gallery-zoom-hint { max-width: 43%; font-size: 0; }
    .gallery-zoom-hint i { font-size: .8rem; }
    .image-lightbox { padding: 0; }
    .image-lightbox-dialog { width: 100%; height: 100vh; height: 100dvh; border: 0; border-radius: 0; }
    .image-lightbox-header, .image-lightbox-toolbar { padding: 10px 12px; }
    .lightbox-image { max-width: 100%; max-height: 100%; }
    .lightbox-nav { top: auto; bottom: 14px; width: 44px; height: 44px; transform: none; }
    .lightbox-prev { left: 12px; }
    .lightbox-next { right: 12px; }
    .image-lightbox-toolbar > span { display: none; }
    .image-lightbox-toolbar { justify-content: center; }
    .detail-specs { grid-template-columns: 1fr; }
    .detail-spec-wide { grid-column: auto; }
    .purchase-actions { grid-template-columns: 1fr; }
    .purchase-actions .btn { grid-column: auto; }
    .contact-form-grid, .form-grid { grid-template-columns: 1fr; }
    .form-field-wide { grid-column: auto; }
    .support-buttons { grid-template-columns: 1fr; }
    .guide-sidebar { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: 1fr; gap: 32px; }
    .footer-brand { grid-column: auto; }
    .footer-bottom-inner { display: grid; text-align: center; justify-content: center; }
    .floating-contact { right: 14px; bottom: 14px; }
    .floating-btn { width: 46px; height: 46px; }
    .account-heading { flex-direction: column; align-items: flex-start; }
    .profile-list > div { grid-template-columns: 1fr; gap: 2px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}