/* Be Vietnam Pro tu luu (SIL OFL 1.1, xem fonts/GIAY-PHEP.txt) — khong goi Google Fonts: bot mot ten mien, khong chan hien thi */
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/be-vietnam-pro-400-vietnamese.woff2') format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/be-vietnam-pro-400-latin.woff2') format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/be-vietnam-pro-600-vietnamese.woff2') format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/be-vietnam-pro-600-latin.woff2') format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
/* VietnhatGas — giao dien ban 2 (NOVA TECH, 10/2026)
   Huong: catalogue cong nghiep, gon. Nen sang, chu den than, duong ke manh thay khung vien,
   nut chinh mau den than; mau cam chi con o logo va vai chi tiet rat nho. */
:root {
  --ink: #121417; --text: #1E2227; --muted: #626A74; --faint: #8C939C;
  --line: #E2E7EE; --line-2: #CDD5E0; --soft: #F2F5FA; --white: #fff;
  --brand: #0C3C9C; --brand-d: #082B74; --navy: #04174A; --brand-tint: #E8EEF9;
  --flame: #F07020; --flame-d: #D9560C; --flame-grad: linear-gradient(90deg, #E8341C 0%, #F07020 45%, #F2A51F 100%);
  --accent: var(--flame);
  --dark: var(--navy); --dark-2: #0A2360; --dark-line: #1E3A78; --dark-text: #B4C2DE;
  --wrap: 1240px; --gut: 32px;
  --f: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; font: 400 16px/1.65 var(--f); color: var(--text); background: var(--white); overflow-x: hidden; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0 0 .5em; color: var(--ink); font-weight: 600; text-wrap: balance; }
h1 { font-size: clamp(36px, 5vw, 64px); line-height: 1.04; letter-spacing: -.035em; }
h2 { font-size: clamp(28px, 3.1vw, 42px); line-height: 1.1; letter-spacing: -.025em; }
h3 { font-size: 18px; line-height: 1.35; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; }
::selection { background: #FFD9BF; color: var(--ink); }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gut); }
.sr, .skip:not(:focus) { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip:focus { position: fixed; top: 8px; left: 8px; z-index: 100; background: var(--white); padding: 8px 14px; }

/* ---------- Nut, lien ket ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 12px 22px;
  border-radius: 4px; border: 1px solid transparent; font: 500 15px/1.2 var(--f); text-align: center; cursor: pointer; transition: background .15s, border-color .15s, color .15s; }
.btn-sm { min-height: 40px; padding: 8px 16px; font-size: 14px; }
.btn-lg { min-height: 54px; padding: 14px 28px; font-size: 16px; }
.btn-primary, .btn-flame { background: var(--brand); color: var(--white); }
.btn-primary:hover, .btn-flame:hover { background: var(--brand-d); }
.btn-ghost, .btn-ghost-l { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover, .btn-ghost-l:hover { border-color: var(--brand); color: var(--brand); }
.btn-light { background: var(--white); color: var(--brand); }
.btn-light:hover { background: var(--brand-tint); }
.more { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; color: var(--ink); border-bottom: 1px solid var(--line-2); padding-bottom: 2px; transition: border-color .15s; white-space: nowrap; }
.more:hover { border-color: var(--flame); color: var(--brand); }
.more span { transition: transform .15s; }
.more:hover span { transform: translateX(3px); }
.more-l { color: var(--white); border-color: #3A5592; }
.more-l:hover { border-color: var(--flame); color: var(--white); }
.chip, .chip-l { display: inline-block; font: 500 13px/1 var(--f); padding: 6px 9px; border: 1px solid var(--line-2); border-radius: 3px; color: var(--muted); }
.eyebrow { font: 500 14px/1.4 var(--f); color: var(--muted); margin: 0 0 12px; }
.eyebrow a:hover { color: var(--ink); }
.kicker { font: 500 14px/1.4 var(--f); color: var(--muted); margin: 0 0 22px; display: flex; align-items: center; gap: 12px; }
.kicker { color: var(--brand); font-weight: 600; }
.kicker::before { content: ""; width: 36px; height: 3px; border-radius: 2px; background: var(--flame-grad); }
.idx { display: block; font: 600 13px/1 var(--f); color: var(--flame-d); letter-spacing: .04em; margin-bottom: 14px; font-variant-numeric: tabular-nums; }

/* ---------- Dau trang ---------- */
/* Khong dung backdrop-filter: no bien .hdr thanh khung chua cho menu fixed ben trong, menu an ben phai lam trang tran ngang */
.hdr { position: sticky; top: 0; z-index: 50; background: var(--white); border-bottom: 1px solid transparent; transition: border-color .2s; }
.hdr::before { content: ""; display: block; height: 4px; background: var(--flame-grad); }
.hdr.is-scrolled { border-color: var(--line); }
.hdr-in { display: flex; align-items: center; gap: 28px; min-height: 76px; }
.logo img { width: 150px; }
.nav { margin-left: auto; }
.nav > ul { display: flex; gap: 2px; list-style: none; margin: 0; padding: 0; }
.nav li { position: relative; }
.nav > ul > li > a { display: block; padding: 10px 13px; font-size: 15px; font-weight: 500; color: var(--muted); transition: color .15s; }
.nav > ul > li > a:hover, .nav > ul > li > a.is-active { color: var(--brand); }
.nav > ul > li > a.is-active { box-shadow: inset 0 -3px 0 var(--flame); }
.nav .has-sub { display: flex; align-items: center; }
.sub-toggle { display: none; }
.nav .sub { position: absolute; top: calc(100% + 6px); left: 0; min-width: 280px; list-style: none; margin: 0; padding: 10px 0; background: var(--white);
  border: 1px solid var(--line); box-shadow: 0 18px 40px rgb(18 20 23 / 10%); opacity: 0; visibility: hidden; transform: translateY(4px); transition: .15s; }
.nav .sub::before { content: ""; position: absolute; left: 0; right: 0; top: -8px; height: 8px; }
.nav .has-sub:hover .sub, .nav .has-sub:focus-within .sub { opacity: 1; visibility: visible; transform: none; }
.nav .sub a { display: block; padding: 9px 20px; font-size: 15px; color: var(--text); }
.nav .sub a:hover { background: var(--soft); }
.nav-foot { display: none; }
.hdr-tel { font-weight: 600; font-size: 15px; color: var(--brand); font-variant-numeric: tabular-nums; white-space: nowrap; }
.burger { display: none; width: 44px; height: 44px; border: 0; background: none; cursor: pointer; position: relative; }
.burger span, .burger span::before, .burger span::after { position: absolute; left: 11px; width: 22px; height: 1.5px; background: var(--ink); content: ""; transition: .2s; }
.burger span { top: 21px; } .burger span::before { top: -7px; left: 0; } .burger span::after { top: 7px; left: 0; }
.burger[aria-expanded="true"] span { background: transparent; }
.burger[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.burger[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

/* ---------- Trang chu ---------- */
.hero { padding: 56px 0 72px; }
.hero-in { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.hero h1 { max-width: 11em; margin-bottom: 26px; }
.hero h1 em { font-style: normal; color: var(--brand); }
.hero-lead { font-size: 19px; line-height: 1.6; color: var(--muted); max-width: 30em; margin-bottom: 36px; }
.hero-btn { display: flex; align-items: center; flex-wrap: wrap; gap: 28px; }
.hero { position: relative; z-index: 0; overflow: hidden; }
.hero-fig { margin: 0; position: relative; }
.hero-fig::before { content: ""; position: absolute; z-index: -1; top: 28px; right: -28px; width: 72%; height: calc(100% - 70px); background: var(--brand); }
.hero-fig::after { content: ""; position: absolute; z-index: -1; top: 28px; right: -28px; width: 72%; height: 4px; background: var(--flame-grad); }
.hero-img { background: var(--white); border: 1px solid var(--line); aspect-ratio: 1000 / 1040; overflow: hidden; }
.hero-img img { width: 100%; height: 100%; object-fit: contain; }
.hero-fig figcaption { display: flex; justify-content: space-between; gap: 12px; padding: 14px 2px 0; font-size: 13.5px; color: var(--muted); border-bottom: 1px solid var(--line); padding-bottom: 14px; font-variant-numeric: tabular-nums; }
.hero-fig figcaption { background: var(--white); position: relative; }
.hero-fig figcaption span:first-child { color: var(--brand); font-weight: 600; }

.facts-row { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.facts { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; }
.facts > div { padding: 34px 24px 30px 0; }
.facts > div + div { padding-left: 28px; border-left: 1px solid var(--line); }
.facts dt { font-size: clamp(36px, 4vw, 52px); font-weight: 300; line-height: 1; letter-spacing: -.03em; color: var(--brand); font-variant-numeric: tabular-nums; }
.facts dd { margin: 12px 0 0; font-size: 14.5px; color: var(--muted); max-width: 16em; }
.facts-note { font-size: 12.5px; color: var(--faint); margin: 0; padding: 0 0 16px; }

.sec { padding: 112px 0; }
.sec-tight { padding: 56px 0 96px; }
.sec-tight-top { padding-top: 0; }
.sec-soft { background: var(--soft); }
.sec-paper { background: var(--soft); }
.sec-head { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: end; margin-bottom: 48px; }
.sec-head h2 { margin: 0; }
.sec-aside { display: flex; flex-direction: column; align-items: flex-start; gap: 18px; }
.sec-lead { color: var(--muted); margin: 0; max-width: 32em; }

/* the san pham */
.grid-sp { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px 24px; }
.card-sp { display: flex; flex-direction: column; }
.card-sp[hidden] { display: none; }
.card-sp-img { display: block; aspect-ratio: 12 / 13; background: var(--white); border: 1px solid var(--line); overflow: hidden; }
.card-sp-img img { width: 100%; height: 100%; object-fit: contain; transition: transform .4s ease; }
.card-sp:hover .card-sp-img img { transform: scale(1.03); }
.card-sp-img { transition: border-color .2s; }
.card-sp:hover .card-sp-img { border-color: var(--brand); }
.card-sp-body { padding-top: 16px; display: flex; flex-direction: column; gap: 4px; }
.card-sp-ten { font-size: 17px; font-weight: 500; margin: 0; }
.card-sp-ten a:hover { color: var(--brand); text-decoration: underline; text-decoration-color: var(--flame); text-underline-offset: 4px; }
.card-sp-ma { font-size: 13px; font-weight: 600; color: var(--brand); font-variant-numeric: tabular-nums; }
.card-sp-lead { font-size: 14.5px; line-height: 1.55; color: var(--muted); margin: 6px 0 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* khoi toi: hop tac */
.sec-ink { background: var(--dark); color: var(--dark-text); }
.sec-ink h2, .sec-ink h3 { color: var(--white); }
.sec-ink .idx { color: #F2A51F; }
.coop { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--dark-line); }
.coop article { padding: 36px 36px 8px 0; display: flex; flex-direction: column; }
.coop article + article { padding-left: 36px; border-left: 1px solid var(--dark-line); }
.coop-k { font-size: 64px; font-weight: 300; line-height: 1; letter-spacing: -.03em; color: var(--white); margin-bottom: 28px; padding-bottom: 18px; background: var(--flame-grad) left bottom / 56px 3px no-repeat; }
.coop h3 { font-size: 19px; font-weight: 500; }
.coop p { font-size: 15.5px; }
.coop-fit { margin-top: auto !important; padding-top: 16px; font-size: 14px !important; color: #D6DADF; }
.coop-fit::before { content: "Phù hợp — "; color: #7F93BF; }

/* quy trinh */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0 32px; }
.steps li { border-top: 2px solid var(--line-2); padding: 22px 0 36px; transition: border-color .2s; }
.steps li:hover { border-color: var(--flame); }
.step-n { display: block; font-size: 28px; font-weight: 300; line-height: 1; color: var(--flame-d); margin-bottom: 18px; font-variant-numeric: tabular-nums; }
.steps h3 { font-size: 17px; font-weight: 500; margin-bottom: 8px; }
.steps p { font-size: 14.5px; color: var(--muted); margin: 0; }

/* nhom khach */
.groups { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-2); }
.group { display: flex; flex-direction: column; gap: 12px; padding: 32px 32px 8px 0; }
.group + .group { padding-left: 32px; border-left: 1px solid var(--line-2); }
.group h3 { font-size: 22px; font-weight: 500; margin: 0; transition: color .15s; }
.group:hover h3 { color: var(--brand); }
.group p { color: var(--muted); flex: 1; margin: 0 0 8px; }
.group .more { align-self: flex-start; color: var(--brand); }
.group:hover .more { border-color: var(--ink); }
.group:hover .more span { transform: translateX(3px); }

/* o danh muc */
.tiles { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; }
.tile { display: flex; flex-direction: column; }
.tile-img { display: block; aspect-ratio: 12 / 13; border: 1px solid var(--line); overflow: hidden; background: var(--white); margin-bottom: 14px; }
.tile-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.tile:hover .tile-img img { transform: scale(1.04); }
.tile-img { transition: border-color .2s; }
.tile:hover .tile-img { border-color: var(--brand); }
.tile:hover .tile-ten { color: var(--brand); }
.tile-ten { font-weight: 500; line-height: 1.35; color: var(--ink); }
.tile-n { font-size: 13.5px; color: var(--faint); }

/* video */
.vids { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.vids-all { grid-template-columns: repeat(4, 1fr); }
.vid { display: block; width: 100%; padding: 0; border: 0; background: none; cursor: pointer; text-align: left; font: inherit; color: inherit; }
.vid-img { position: relative; display: block; aspect-ratio: 4 / 3; overflow: hidden; background: #000; }
.vid-img img { width: 100%; height: 100%; object-fit: cover; opacity: .88; transition: opacity .2s, transform .4s; }
.vid:hover .vid-img img { opacity: 1; transform: scale(1.03); }
.vid-play { position: absolute; left: 20px; bottom: 20px; width: 52px; height: 52px; border-radius: 50%; background: var(--flame); }
.vid-play::after { content: ""; position: absolute; left: 21px; top: 17px; border-style: solid; border-width: 9px 0 9px 14px; border-color: transparent transparent transparent var(--white); }
.vid-ten { display: block; margin-top: 14px; font-weight: 500; line-height: 1.4; }
.vid-h { font-size: 16px; font-weight: 500; margin: 12px 0 0; }
.vid-side { position: relative; margin-bottom: 8px; }
.vid-side img { aspect-ratio: 4 / 3; object-fit: cover; }
.vid-side .vid-play { left: 16px; bottom: 16px; }
.vid-side .vid-ten { font-size: 14px; }

/* bao gia */
.quote { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: start; }
.quote-copy p { color: var(--muted); max-width: 26em; }
.quote-contact { margin: 36px 0 0; border-top: 2px solid var(--brand); }
.quote-contact > div { display: flex; justify-content: space-between; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line-2); }
.quote-contact dt { color: var(--muted); font-size: 14.5px; }
.quote-contact dd { margin: 0; font-weight: 600; color: var(--brand); text-align: right; word-break: break-word; }
.form { display: grid; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form label { display: flex; flex-direction: column; gap: 8px; font-size: 14px; font-weight: 500; color: var(--ink); }
.form input, .form select, .form textarea { font: 400 16px/1.4 var(--f); color: var(--text); padding: 13px 14px; border: 1px solid var(--line-2); border-radius: 3px; background: var(--white); width: 100%; transition: border-color .15s; }
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--brand); outline: none; box-shadow: 0 0 0 3px rgb(12 60 156 / 14%); }
.form .is-err { border-color: #B3261E; }
.form-act { display: flex; flex-wrap: wrap; gap: 12px; padding-top: 4px; }
.form-note { font-size: 13px; color: var(--faint); margin: 0; }
.form-note.is-ok { color: #1D6B44; }

/* dai keu goi cuoi trang con */
.cta-band { background: var(--brand); color: #D3DDF2; position: relative; }
.cta-band::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 4px; background: var(--flame-grad); }
.cta-band .btn-primary { background: var(--white); color: var(--brand); }
.cta-band .btn-primary:hover { background: var(--brand-tint); }
.cta-band .more { color: var(--white); border-color: #5A77B8; }
.cta-band .more:hover { border-color: var(--flame); color: var(--white); }
.cta-band-in { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding-top: 56px; padding-bottom: 56px; }
.cta-band h2 { font-size: clamp(24px, 2.4vw, 32px); margin: 0 0 6px; color: var(--white); }
.cta-band p { margin: 0; color: #C8D4EE; }
.cta-band-btn { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }

/* tieu de trang con */
.band { padding: 40px 0 56px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, var(--soft), var(--white)); }
.band h1::after { content: ""; display: block; width: 56px; height: 4px; border-radius: 2px; background: var(--flame-grad); margin-top: 22px; }
.band h1 { font-size: clamp(32px, 4.2vw, 54px); max-width: 16em; margin-bottom: 16px; }
.band-lead { max-width: 40em; margin: 0; font-size: 18px; color: var(--muted); }
.band .eyebrow { display: none; }
.crumb { font-size: 13.5px; color: var(--faint); margin-bottom: 36px; }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--ink); }
.crumb-d { margin-bottom: 28px; }

/* loc san pham */
.filter, .pills { display: flex; flex-wrap: wrap; gap: 0 24px; margin-bottom: 28px; }
.fchip, .pill { font: 500 15px/1 var(--f); padding: 12px 0; margin-bottom: 0; border: 0; border-bottom: 2px solid transparent; background: none; color: var(--muted); cursor: pointer; }
.fchip span { color: var(--faint); font-weight: 400; margin-left: 2px; font-size: 13px; }
.fchip:hover, .pill:hover { color: var(--ink); }
.fchip.is-on, .pill.is-on { color: var(--brand); border-color: var(--flame); }
.search { display: block; max-width: 420px; margin-bottom: 40px; }
.search input { width: 100%; font: 400 16px var(--f); padding: 12px 0; border: 0; border-bottom: 1px solid var(--line-2); background: transparent; }
.search input:focus { outline: none; border-color: var(--brand); }
.empty { color: var(--muted); }

/* chi tiet san pham */
.pd { padding: 24px 0 96px; }
.pd-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 72px; align-items: start; }
.gallery { position: sticky; top: 100px; }
.g-main { border: 1px solid var(--line); aspect-ratio: 12 / 13; background: var(--white); }
.g-main img { width: 100%; height: 100%; object-fit: contain; }
.g-thumbs { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; margin-top: 12px; }
.g-thumb { padding: 0; border: 1px solid var(--line); background: var(--white); cursor: pointer; aspect-ratio: 12 / 13; opacity: .7; transition: opacity .15s, border-color .15s; }
.g-thumb img { width: 100%; height: 100%; object-fit: cover; }
.g-thumb:hover { opacity: 1; }
.g-thumb.is-on { border-color: var(--brand); opacity: 1; }
.pd-info { padding-top: 8px; }
.pd-info h1 { font-size: clamp(30px, 3.2vw, 44px); margin-bottom: 14px; }
.pd-info .chip-l { border: 0; padding: 5px 10px; font-size: 14px; font-weight: 600; color: var(--brand); background: var(--brand-tint); border-radius: 3px; }
.pd-info .chip-l::before { content: ""; }
.pd-lead { font-size: 19px; line-height: 1.55; color: var(--ink); margin: 22px 0 32px; max-width: 30em; }
.specs { margin: 0 0 36px; border-top: 2px solid var(--brand); }
.specs > div { display: grid; grid-template-columns: 40% 1fr; gap: 16px; border-bottom: 1px solid var(--line); padding: 13px 0; }
.specs dt { font-size: 14.5px; color: var(--muted); }
.specs dd { margin: 0; font-size: 15px; color: var(--ink); }
.pd-cta { display: flex; flex-wrap: wrap; gap: 10px; }
.h-sec { font-size: 28px; margin-bottom: 24px; }
.narrow { max-width: 820px; }

/* bai viet */
.art { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 80px; align-items: start; }
.art-side { position: sticky; top: 100px; display: grid; gap: 24px; }
.art-hero { border: 1px solid var(--line); }
.side-cta { background: var(--brand); color: #D3DDF2; padding: 24px; border-top: 4px solid var(--flame); }
.side-cta .btn { background: var(--white); color: var(--brand); }
.side-cta .btn:hover { background: var(--brand-tint); }
.side-cta h2 { font-size: 20px; margin-bottom: 8px; color: var(--white); }
.side-cta p { color: #C8D4EE; font-size: 15px; }
.side-cta .btn { width: 100%; }
.side-tel { display: block; margin-top: 14px; font-weight: 600; color: var(--white); font-variant-numeric: tabular-nums; }
.side-list { border-top: 1px solid var(--line-2); padding-top: 16px; }
.side-list h2 { font-size: 15px; font-weight: 500; color: var(--muted); }
.side-list ul { list-style: none; margin: 0; padding: 0; }
.side-list a { display: block; padding: 10px 0; color: var(--text); border-bottom: 1px solid var(--line); font-size: 15px; }
.side-list a:hover { color: var(--ink); }
.side-list a[aria-current] { color: var(--brand); font-weight: 600; box-shadow: inset 3px 0 0 var(--flame); padding-left: 12px; }
.facts-side { grid-template-columns: 1fr; border-top: 1px solid var(--line-2); margin: 0; }
.facts-side > div, .facts-side > div + div { padding: 16px 0; border-left: 0; border-bottom: 1px solid var(--line); }
.facts-side dt { font-size: 38px; }
.art-side .facts-note { padding: 0; }

.prose { font-size: 17px; line-height: 1.75; min-width: 0; color: var(--text); }
.prose > :first-child { margin-top: 0; }
.prose h2 { font-size: 28px; margin: 1.8em 0 .6em; }
.prose h3 { font-size: 20px; font-weight: 500; margin: 1.5em 0 .5em; }
.prose strong { font-weight: 600; color: var(--ink); }
.prose a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgb(12 60 156 / 30%); }
.prose a:hover { text-decoration-color: var(--ink); }
.prose ul, .prose ol { padding-left: 1.2em; margin: 0 0 1.3em; }
.prose li { margin-bottom: .5em; }
.prose li::marker { color: var(--flame); }
.prose img { margin: 1.4em 0; border: 1px solid var(--line); }
.prose table { width: 100%; border-collapse: collapse; margin: 1.4em 0 2em; font-size: 15.5px; display: block; overflow-x: auto; }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 12px 14px 12px 0; text-align: left; vertical-align: top; }
.prose thead th { border-bottom: 2px solid var(--brand); font-weight: 600; color: var(--brand); }
.prose tbody td:first-child { color: var(--muted); }
.prose a.btn-cta { display: inline-flex; background: var(--brand); color: var(--white); padding: 11px 20px; border-radius: 4px; font-weight: 500; text-decoration: none; }
.prose a.btn-cta:hover { background: var(--brand-d); }
.video-nhung, .player { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #000; margin: 0 0 1.5em; }
.player-short { aspect-ratio: 9 / 16; max-width: 420px; }
.video-nhung iframe, .player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* dich vu */
.svc { display: grid; grid-template-columns: 240px 1fr; gap: 28px; padding: 28px 0; border-top: 1px solid var(--line-2); color: var(--text); }
.svc img { width: 100%; aspect-ratio: 1; object-fit: cover; border: 1px solid var(--line); }
.svc-body { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.svc-ten { font-size: 22px; font-weight: 600; color: var(--ink); letter-spacing: -.01em; }
.svc-mo { color: var(--muted); flex: 1; }
.svc .link-more { font-weight: 500; color: var(--ink); border-bottom: 1px solid var(--line-2); }

/* lien he */
.contact { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--brand); margin-bottom: 56px; }
.ct { display: flex; flex-direction: column; gap: 8px; padding: 24px 24px 24px 0; }
.ct + .ct { padding-left: 24px; border-left: 1px solid var(--line); }
.ct span { font-size: 14px; color: var(--muted); }
.ct strong { font-size: clamp(22px, 2.2vw, 30px); font-weight: 400; color: var(--brand); letter-spacing: -.02em; word-break: break-word; }
.ct:hover strong { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.offices { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.office { border-top: 1px solid var(--line-2); padding-top: 18px; }
.office h2 { font-size: 18px; font-weight: 500; }
.office p { color: var(--muted); }
.office .link-more { font-weight: 500; color: var(--ink); }

/* chan trang */
.ftr { background: var(--dark); color: var(--dark-text); font-size: 15px; position: relative; }
.ftr::before { content: ""; display: block; height: 4px; background: var(--flame-grad); }
.ftr-top { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 72px 0 56px; border-bottom: 1px solid var(--dark-line); }
.ftr-claim { font-size: clamp(26px, 3vw, 40px); font-weight: 300; line-height: 1.15; letter-spacing: -.025em; color: var(--white); max-width: 15em; margin: 0; }
.ftr-grid { display: grid; grid-template-columns: 1.1fr 1fr 1fr 1.2fr; gap: 32px; padding: 48px 0; }
.ftr-h { font-size: 13px; font-weight: 600; color: #F2A51F; margin: 0 0 16px; letter-spacing: .02em; }
.ftr ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.ftr a { color: #DCE4F5; transition: color .15s; }
.ftr a:hover { color: var(--white); }
.ftr .btn-light, .ftr .btn-light:hover { color: var(--ink); }
.ftr-lh p { margin: 0 0 14px; display: flex; flex-direction: column; gap: 2px; }
.ftr-lh span, .ftr-addr span { font-size: 13px; color: #7F93BF; }
.ftr-big { font-size: 26px; font-weight: 300; color: var(--white) !important; letter-spacing: -.01em; }
.ftr-addr { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; padding: 24px 0; border-top: 1px solid var(--dark-line); font-size: 14px; }
.ftr-addr p { margin: 0; display: flex; flex-direction: column; gap: 2px; }
.ftr-bot { display: flex; justify-content: space-between; gap: 16px; padding: 20px 0 28px; border-top: 1px solid var(--dark-line); font-size: 13px; color: #7F93BF; }

/* thanh duoi dien thoai + modal */
.mbar { display: none; }
.modal { position: fixed; inset: 0; z-index: 90; background: rgb(10 11 13 / 88%); display: grid; place-items: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal-box { position: relative; width: min(980px, 100%); }
.modal-frame { position: relative; aspect-ratio: 16 / 9; background: #000; }
.modal-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.modal-x { position: absolute; top: -50px; right: 0; width: 42px; height: 42px; border-radius: 50%; border: 0; background: var(--white); font-size: 24px; line-height: 1; cursor: pointer; }

/* ---------- Man hinh nho ---------- */
@media (max-width: 1180px) {
  .hdr-tel { display: none; }
  .grid-sp { grid-template-columns: repeat(3, 1fr); }
  .tiles { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .ftr-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 960px) {
  :root { --gut: 20px; }
  .hdr-in { min-height: 64px; gap: 12px; }
  .logo img { width: 128px; }
  .burger { display: block; }
  .hdr-cta { margin-left: auto; }
  .nav { position: fixed; inset: 64px 0 0 0; background: var(--white); margin: 0; padding: 8px var(--gut) 120px; overflow-y: auto;
    transform: translateX(100%); transition: transform .25s; visibility: hidden; }
  .nav.is-open { transform: none; visibility: visible; }
  .nav > ul { flex-direction: column; gap: 0; }
  .nav > ul > li { border-bottom: 1px solid var(--line); }
  .nav > ul > li > a { padding: 18px 0; font-size: 20px; color: var(--ink); flex: 1; box-shadow: none !important; }
  .nav .has-sub { flex-wrap: wrap; }
  .sub-toggle { display: grid; place-items: center; width: 44px; height: 44px; border: 0; background: none; color: var(--ink); cursor: pointer; }
  .sub-toggle svg { width: 14px; transition: transform .2s; }
  .sub-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
  .nav .sub { position: static; width: 100%; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 0 0 14px; display: none; }
  .nav .sub.is-open { display: block; }
  .nav .sub a { padding: 9px 0; color: var(--muted); }
  .nav-foot { display: grid; gap: 14px; margin-top: 28px; }
  .nav-tel { color: var(--brand); font-weight: 600; }
  .hero { padding: 28px 0 56px; }
  .hero-in, .quote, .art, .pd-grid, .sec-head { grid-template-columns: 1fr; gap: 36px; }
  .sec-head { gap: 16px; margin-bottom: 36px; }
  .gallery, .art-side { position: static; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .facts > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .facts > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .sec { padding: 80px 0; }
  .coop, .groups { grid-template-columns: 1fr; }
  .coop article, .coop article + article, .group, .group + .group { padding: 28px 0; border-left: 0; }
  .coop article + article { border-top: 1px solid var(--dark-line); }
  .group + .group { border-top: 1px solid var(--line-2); }
  .vids, .vids-all { grid-template-columns: repeat(2, 1fr); }
  .cta-band-in { flex-direction: column; align-items: flex-start; }
  .ftr-top { flex-direction: column; align-items: flex-start; }
  .mbar { display: grid; grid-template-columns: 1fr 1fr 1.7fr; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; background: var(--white);
    border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); }
  .mbar a { display: flex; align-items: center; justify-content: center; min-height: 56px; font-size: 15px; font-weight: 500; color: var(--ink); }
  .mbar a + a { border-left: 1px solid var(--line); }
  .mbar .mbar-cta { background: var(--brand); color: var(--white); border: 0; }
  body { padding-bottom: 56px; }
}
@media (max-width: 640px) {
  :root { --gut: 18px; }
  .hdr-cta { display: none; }
  .burger { margin-left: auto; }
  h1 { font-size: 38px; }
  .hero-lead { font-size: 17px; }
  .hero-btn { flex-direction: column; align-items: flex-start; gap: 20px; }
  .hero-btn .btn { width: 100%; }
  .hero-fig figcaption span:last-child { display: none; }
  .grid-sp { grid-template-columns: repeat(2, 1fr); gap: 28px 14px; }
  .card-sp-ten { font-size: 15.5px; }
  .card-sp-lead { display: none; }
  .tiles { grid-template-columns: repeat(2, 1fr); gap: 20px 14px; }
  .steps { grid-template-columns: 1fr; }
  .vids, .vids-all { grid-template-columns: 1fr; }
  .form-row, .offices, .contact { grid-template-columns: 1fr; }
  .ct + .ct { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .facts dd { font-size: 13.5px; }
  .ftr-grid, .ftr-addr { grid-template-columns: 1fr; }
  .ftr-bot { flex-direction: column; }
  .svc { grid-template-columns: 1fr; }
  .specs > div { grid-template-columns: 1fr; gap: 2px; }
  .g-thumbs { grid-template-columns: repeat(5, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- Ban 3: mau thuong hieu — dieu chinh sau khi xem ---------- */
/* Bo khoi xanh lech sau anh (chi lo mot dai mong, trong nhu loi) -> dai lua tren dau khung anh */
.hero-fig::before, .hero-fig::after { content: none; }
.hero-img { position: relative; border-top: 0; }
.hero-img::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 5px; background: var(--flame-grad); z-index: 1; }
/* Dai so lieu: nen xanh thuong hieu, chu trang */
.facts-row { background: var(--brand); border: 0; color: #D3DDF2; position: relative; }
.facts-row .facts dt { color: var(--white); }
.facts-row .facts dd { color: #C8D4EE; }
.facts-row .facts > div + div { border-left-color: rgb(255 255 255 / 18%); }
.facts-row .facts-note { color: #8FA5D3; }
@media (max-width: 960px) {
  .facts-row .facts > div:nth-child(n+3) { border-top-color: rgb(255 255 255 / 18%); }
}

/* =====================================================================
   Ban 4 — giu bo cuc, sua 4 diem: phan mo dau trong, chu manh, thieu sinh dong, anh lon xon
   ===================================================================== */
/* --- Chu dam, ro hon --- */
:root { --text: #161A20; --muted: #4E5866; --faint: #75808E; }
h1, h2 { font-weight: 700; letter-spacing: -.03em; }
h3 { font-weight: 600; }
.sec-head h2 { font-size: clamp(30px, 3.4vw, 46px); }
.card-sp-ten, .tile-ten, .vid-ten, .steps h3, .group h3, .coop h3 { font-weight: 600; }
.facts dt, .facts-side dt, .coop-k, .step-n, .ftr-claim, .ct strong, .ftr-big { font-weight: 600; }
.nav > ul > li > a { font-weight: 600; }
.idx { font-size: 14px; font-weight: 700; letter-spacing: .06em; }

/* --- Phan mo dau: nen xanh thuong hieu, cum vo binh lon, o thong so co bieu tuong --- */
.hero-b { position: relative; overflow: hidden; color: #DCE6F7; padding: 72px 0 120px;
  background: radial-gradient(700px 480px at 82% 55%, rgb(242 112 32 / 28%), transparent 65%), linear-gradient(100deg, #04174A 0%, #0C3C9C 55%, #2E67A6 100%); }
.hero-b .hero-in { grid-template-columns: 1fr; position: relative; z-index: 1; }
.hero-b .hero-copy { max-width: 600px; }
.hero-b .hero-art { position: absolute; right: 0; top: 0; bottom: 0; width: 56%; height: auto; max-width: 900px; }
.hero-b .hero-art img { width: 100%; height: 100%; object-fit: cover; object-position: left center;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 26%); mask-image: linear-gradient(90deg, transparent 0%, #000 26%); }
.hero-b h1 { color: var(--white); font-size: clamp(40px, 5.2vw, 68px); max-width: 10em; }
.hero-b h1 em { font-style: normal; background: var(--flame-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-b .kicker { color: #FFC48F; }
.hero-b .hero-lead { color: #CFDBF2; font-size: 18.5px; margin-bottom: 28px; }
.hero-spec { list-style: none; margin: 0 0 34px; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 560px; }
.hero-spec li { display: flex; align-items: center; gap: 12px; padding: 12px 14px; background: rgb(255 255 255 / 8%); border: 1px solid rgb(255 255 255 / 16%); border-radius: 8px; }
.hero-spec .ic { width: 30px; height: 30px; flex: none; color: #FFB067; }
.hero-spec span { display: flex; flex-direction: column; font-size: 13.5px; line-height: 1.35; color: #BFCDE9; }
.hero-spec b { font-size: 15.5px; color: var(--white); font-weight: 600; }
.btn-flame-solid { background: var(--flame); color: #fff; font-weight: 600; box-shadow: 0 8px 22px rgb(240 112 32 / 35%); text-shadow: 0 1px 1px rgb(0 0 0 / 18%); }
.btn-flame-solid:hover { background: var(--flame-d); }
.btn-outline-l { background: transparent; color: var(--white); border-color: rgb(255 255 255 / 45%); }
.btn-outline-l:hover { border-color: var(--white); background: rgb(255 255 255 / 8%); }

/* --- Dai cam ket de len mep duoi phan mo dau --- */
.trust { position: relative; z-index: 2; margin-top: -64px; }
.trust-in { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); background: var(--white);
  border-radius: 10px; box-shadow: 0 20px 50px rgb(4 23 74 / 14%); overflow: hidden; }
.trust-in li { display: flex; gap: 14px; align-items: flex-start; padding: 24px 22px; }
.trust-in li + li { border-left: 1px solid var(--line); }
.trust-in .ic { width: 34px; height: 34px; flex: none; color: var(--brand); padding: 6px; background: var(--brand-tint); border-radius: 8px; box-sizing: content-box; }
.trust-in span { display: flex; flex-direction: column; font-size: 14px; line-height: 1.45; color: var(--muted); }
.trust-in b { font-size: 16px; color: var(--ink); font-weight: 600; margin-bottom: 2px; }

/* --- Dai so lieu: nen trang, so lon dam mau xanh --- */
.facts-light { background: var(--white); border: 0; }
.facts-light .facts dt { color: var(--brand); font-size: clamp(40px, 4.4vw, 58px); }
.facts-light .facts dd { color: var(--muted); }
.facts-light .facts > div + div { border-left-color: var(--line); }
.facts-light .facts-note { color: var(--faint); }

/* --- Anh san pham dong nhat: khung nen xam nhat, anh nen trang hoa vao khung, anh tach nen co le --- */
.card-sp-img, .tile-img, .g-main, .g-thumb { background: #EEF2F8; border-color: #E2E8F1; border-radius: 6px; }
.card-sp-img img, .g-main img { mix-blend-mode: multiply; }
.card-sp-img.is-cutout img { object-fit: contain; padding: 9%; }
.card-sp-body { padding-top: 14px; }

/* --- Bieu tuong cho quy trinh, nhom khach --- */
.steps-ic li { position: relative; padding-top: 24px; }
.step-ic { display: inline-grid; place-items: center; width: 52px; height: 52px; border-radius: 12px; background: var(--brand-tint); color: var(--brand); margin-bottom: 16px; transition: background .2s, color .2s; }
.step-ic .ic { width: 28px; height: 28px; }
.steps-ic li:hover .step-ic { background: var(--brand); color: var(--white); }
.steps-ic .step-n { position: absolute; top: 24px; right: 0; font-size: 34px; color: #D6DEEA; margin: 0; }
.group-ic { display: inline-grid; place-items: center; width: 56px; height: 56px; border-radius: 12px; background: var(--white); color: var(--flame-d); border: 1px solid var(--line); margin-bottom: 6px; transition: background .2s, color .2s; }
.group-ic .ic { width: 30px; height: 30px; }
.group:hover .group-ic { background: var(--flame); color: var(--white); border-color: var(--flame); }

/* --- Video: mot video lon + hai video nho --- */
.vids-feature { grid-template-columns: 1.6fr 1fr; grid-template-rows: auto auto; gap: 22px; }
.vids-feature .vid-lon { grid-row: span 2; }
.vids-feature .vid-lon .vid-img { aspect-ratio: auto; height: calc(100% - 44px); min-height: 320px; }
.vids-feature .vid-lon .vid-play { width: 72px; height: 72px; left: 28px; bottom: 28px; }
.vids-feature .vid-lon .vid-play::after { left: 29px; top: 24px; border-width: 12px 0 12px 19px; }
.vids-feature .vid-lon .vid-ten { font-size: 18px; }
.vid-img { border-radius: 6px; }

@media (max-width: 960px) {
  .hero-b { padding: 40px 0 0; }
  .hero-b .hero-art { position: relative; width: 100%; height: 300px; margin-top: 8px; }
  .hero-b .hero-art img { -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 22%); mask-image: linear-gradient(180deg, transparent 0%, #000 22%); object-position: center; }
  .hero-b { display: flex; flex-direction: column-reverse; }
  .trust { margin-top: 0; }
  .trust-in { grid-template-columns: 1fr 1fr; border-radius: 0; box-shadow: none; border-bottom: 1px solid var(--line); }
  .trust-in li:nth-child(3) { border-left: 0; }
  .trust-in li:nth-child(n+3) { border-top: 1px solid var(--line); }
  .vids-feature { grid-template-columns: 1fr; }
  .vids-feature .vid-lon { grid-row: auto; }
  .vids-feature .vid-lon .vid-img { height: auto; aspect-ratio: 4 / 3; min-height: 0; }
}
@media (max-width: 640px) {
  .hero-spec { gap: 8px; }
  .hero-spec li { padding: 10px; gap: 8px; align-items: flex-start; }
  .hero-spec .ic { width: 22px; height: 22px; }
  .hero-spec b { font-size: 14px; }
  .hero-spec span { font-size: 12px; }
  .trust-in { grid-template-columns: 1fr; }
  .trust-in li + li { border-left: 0; border-top: 1px solid var(--line); }
  .hero-b .hero-art { height: 240px; }
}
.tile-img img { mix-blend-mode: multiply; }

/* =====================================================================
   Ban 5 — co chu vua phai (anh gop y: chu vua phai thoi) + dong bo trang con
   ===================================================================== */
/* --- Co chu: nho lai ~20%, dam 600 thay 700 --- */
h1, h2 { font-weight: 600; letter-spacing: -.022em; }
h1 { font-size: clamp(30px, 3.4vw, 44px); line-height: 1.12; }
h2 { font-size: clamp(24px, 2.3vw, 32px); line-height: 1.18; }
.sec-head h2 { font-size: clamp(26px, 2.5vw, 34px); }
.hero-b h1 { font-size: clamp(34px, 3.9vw, 50px); max-width: 11em; line-height: 1.1; }
.hero-b .hero-lead, .hero-lead { font-size: 17px; }
.hero-spec b { font-size: 15px; }
.facts dt, .facts-light .facts dt { font-size: clamp(32px, 3vw, 42px); font-weight: 600; }
.facts-side dt { font-size: 30px; }
.coop-k { font-size: 46px; font-weight: 600; }
.coop h3, .group h3 { font-size: 19px; }
.steps-ic .step-n { font-size: 26px; }
.nav > ul > li > a { font-weight: 500; }
.idx { font-size: 13px; font-weight: 600; letter-spacing: .05em; }
.idx:empty { display: none; }
.ftr-claim { font-size: clamp(22px, 2.3vw, 30px); font-weight: 500; }
.ftr-big { font-size: 22px; font-weight: 500; }
.ct strong { font-size: clamp(19px, 1.7vw, 23px); font-weight: 600; }
.pd-info h1 { font-size: clamp(26px, 2.5vw, 34px); }
.pd-lead { font-size: 17px; }
.prose { font-size: 16.5px; }
.prose h2 { font-size: 24px; }
.prose h3 { font-size: 19px; font-weight: 600; }
.h-sec { font-size: 24px; }
.svc-ten { font-size: 20px; }
.cta-band h2 { font-size: clamp(21px, 2vw, 27px); }
.vids-feature .vid-lon .vid-ten { font-size: 17px; }

/* --- Dai tieu de trang con: nen xanh nhu phan mo dau trang chu --- */
.band-b { position: relative; overflow: hidden; padding: 30px 0 60px; border: 0; color: #CFDBF2;
  background: radial-gradient(560px 380px at 86% 60%, rgb(242 112 32 / 24%), transparent 65%), linear-gradient(100deg, #04174A 0%, #0C3C9C 58%, #2E67A6 100%); }
.band-b.has-trust { padding-bottom: 112px; }
.band-b .wrap { position: relative; z-index: 1; }
.band-b .band-txt { max-width: 640px; }
.band-b h1 { color: var(--white); max-width: 15em; margin-bottom: 14px; }
.band-b h1::after { margin-top: 18px; }
.band-b .band-lead { color: #CFDBF2; font-size: 17px; max-width: 34em; }
.band-b .crumb { color: #8FA5D3; margin-bottom: 30px; }
.band-b .crumb a { color: #CFDBF2; }
.band-b .crumb a:hover { color: var(--white); }
.band-k { font: 600 14px/1.4 var(--f); color: var(--flame-d); margin: 0 0 10px; }
.band-k a { color: inherit; }
.band-b .band-k { color: #FFC48F; }
.band-art { position: absolute; right: 0; top: 0; bottom: 0; width: 46%; max-width: 760px; pointer-events: none; }
.band-art img { width: 100%; height: 100%; object-fit: cover; object-position: left center;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 38%); mask-image: linear-gradient(90deg, transparent 0%, #000 38%); }
.band-ic { position: absolute; right: var(--gut); top: 50%; transform: translateY(-50%); width: 200px; height: 200px; color: rgb(255 255 255 / 13%); pointer-events: none; }
.has-trust .band-ic { top: calc(50% - 26px); }
.band-ic .ic { width: 100%; height: 100%; stroke-width: 1; }
.band-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; }
.band-chips span { padding: 7px 13px; border: 1px solid rgb(255 255 255 / 22%); border-radius: 999px; background: rgb(255 255 255 / 7%); font: 500 13.5px/1.2 var(--f); color: var(--white); }

/* chi tiet san pham: dai mong chua duong dan */
.band-mini { position: relative; background: linear-gradient(100deg, #04174A 0%, #0C3C9C 60%, #2E67A6 100%); padding: 14px 0 17px; }
.band-mini::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: var(--flame-grad); }
.band-mini .crumb { margin: 0; color: #8FA5D3; }
.band-mini .crumb a { color: #CFDBF2; }
.band-mini .crumb a:hover { color: var(--white); }
.pd { padding-top: 44px; }
.pd-info .band-k { margin-bottom: 8px; }
.pd-info .chip-l { border-radius: 999px; padding: 6px 12px; }
.specs { border-top-width: 3px; }
.pd-trust { list-style: none; margin: 28px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.pd-trust li { display: flex; align-items: center; gap: 10px; padding: 12px; background: var(--soft); border: 1px solid var(--line); border-radius: 8px; }
.pd-trust .ic { width: 26px; height: 26px; flex: none; color: var(--brand); }
.pd-trust span { display: flex; flex-direction: column; font-size: 13px; line-height: 1.35; color: var(--muted); }
.pd-trust b { font-size: 14px; font-weight: 600; color: var(--ink); }

/* --- Dai keu goi + o ben bai viet: cung nen xanh, nut cam --- */
.cta-b { background: radial-gradient(520px 300px at 92% 50%, rgb(242 112 32 / 24%), transparent 65%), linear-gradient(100deg, #04174A 0%, #0C3C9C 60%, #2E67A6 100%); }
.cta-txt { display: flex; align-items: center; gap: 20px; }
.cta-ic { display: grid; place-items: center; flex: none; width: 60px; height: 60px; border-radius: 12px; background: rgb(255 255 255 / 10%); color: #FFB067; }
.cta-ic .ic { width: 30px; height: 30px; }
.cta-b .cta-band-btn { gap: 12px; }
.side-cta { position: relative; overflow: hidden; border-top: 0; border-radius: 10px; padding: 28px 24px 24px; background: linear-gradient(160deg, #04174A, #0C3C9C); }
.side-cta::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 4px; background: var(--flame-grad); }
.side-cta .btn { background: var(--flame); color: var(--white); font-weight: 600; }
.side-cta .btn:hover { background: var(--flame-d); }
.art-hero { border-radius: 10px; }

/* --- Dich vu, video: the bo goc, noi khi re chuot --- */
.svc { padding: 24px; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 20px; transition: box-shadow .2s, border-color .2s; }
.svc:hover { border-color: var(--line-2); box-shadow: 0 16px 40px rgb(4 23 74 / 10%); }
.svc img { border-radius: 8px; }
.svc .link-more { color: var(--brand); border-color: var(--flame); }
.vid-card .vid-h a:hover { color: var(--brand); }

/* --- Lien he: o co bieu tuong --- */
.contact-ic { border-top: 0; gap: 16px; }
.contact-ic .ct, .contact-ic .ct + .ct { padding: 24px; border: 1px solid var(--line); border-radius: 10px; background: var(--white); transition: box-shadow .2s, border-color .2s; }
.contact-ic .ct:hover { border-color: var(--line-2); box-shadow: 0 16px 40px rgb(4 23 74 / 10%); }
.ct-ic, .office-ic { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 12px; background: var(--brand-tint); color: var(--brand); margin-bottom: 6px; }
.ct-ic .ic, .office-ic .ic { width: 26px; height: 26px; }
.contact-ic .ct span.ct-ic { color: var(--brand); }
.office { display: flex; gap: 16px; align-items: flex-start; border-top: 0; padding: 22px; background: var(--soft); border-radius: 10px; }
.office-ic { flex: none; background: var(--white); color: var(--flame-d); margin: 0; }
.office h2 { font-size: 17px; font-weight: 600; }
.quote-steps { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 10px; }
.quote-steps li { display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--ink); }
.quote-steps .ic { width: 36px; height: 36px; flex: none; padding: 7px; box-sizing: border-box; border-radius: 9px; background: var(--white); color: var(--brand); border: 1px solid var(--line); }

@media (max-width: 960px) {
  .band-art { display: none; }
  .band-b.has-trust { padding-bottom: 48px; }
  .band-ic { width: 120px; height: 120px; top: auto; bottom: -36px; transform: none; }
  .has-trust .band-ic { top: auto; }
  .cta-b .cta-band-btn { width: 100%; }
}
@media (max-width: 640px) {
  h1 { font-size: 28px; }
  .hero-b h1 { font-size: 32px; }
  .sec-head h2 { font-size: 24px; }
  .band-b { padding: 22px 0 40px; }
  .band-b .crumb { margin-bottom: 20px; }
  .band-b .band-lead { font-size: 15.5px; }
  .band-ic { width: 96px; height: 96px; }
  .pd-trust { grid-template-columns: 1fr; }
  .cta-txt { align-items: flex-start; }
  .cta-ic { width: 48px; height: 48px; }
  .cta-b .cta-band-btn .btn { width: 100%; }
  .svc { padding: 16px; }
  .contact-ic .ct + .ct { border-top: 1px solid var(--line); }
}
.cta-b .cta-txt { flex: 1; min-width: 0; }
.cta-b .cta-band-btn { flex-wrap: nowrap; flex: none; }
@media (max-width: 960px) { .cta-b .cta-band-btn { flex-wrap: wrap; } }
.band-b h1 { font-size: clamp(30px, 3.4vw, 44px); }
@media (max-width: 640px) { .band-b h1 { font-size: 28px; } }
/* anh GPT (vuong, co boi canh): lap kin khung the 12:13 */
.card-sp-img:not(.is-cutout) img { object-fit: cover; }

/* --- Phan mo dau: banner ChatGPT (2000x751, san pham ben phai) --- */
.hero-c { background: radial-gradient(900px 500px at 75% 70%, rgb(240 112 32 / 14%), transparent 70%), linear-gradient(180deg, #08245F 0%, #0A2A6C 100%); min-height: calc(min(92vw, 1800px) / 2.663 + 40px); }
.hero-c .hero-art { left: auto; top: auto; right: 0; bottom: 0; width: min(92vw, 1800px); max-width: none; height: auto; aspect-ratio: 2000 / 751; }
.hero-c .hero-art img { object-fit: cover; object-position: right bottom;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 22%), linear-gradient(180deg, transparent 0%, #000 18%); -webkit-mask-composite: source-in;
  mask-image: linear-gradient(90deg, transparent 0%, #000 22%), linear-gradient(180deg, transparent 0%, #000 18%); mask-composite: intersect; }
.hero-c .hero-copy { max-width: 500px; }
@media (max-width: 960px) {
  .hero-c { min-height: 0; }
  .hero-c .hero-art { position: relative; width: 100%; aspect-ratio: 1.65; height: auto; margin-top: 8px; }
  .hero-c .hero-art img { object-position: 86% center; -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 20%); mask-image: linear-gradient(180deg, transparent 0%, #000 20%); }
}
@media (min-width: 961px) { .hero-c .hero-art { bottom: 40px; } .hero-c { min-height: calc(min(92vw, 1800px) / 2.663 + 80px); } }

/* banner ChatGPT: phan dau trang con (anh nha xuong) + banner danh muc nhuong quyen */
.band-art img[src*="banner-san-pham"] { object-position: 55% center; }
.dm-banner { margin: 0 0 32px; border-radius: 10px; overflow: hidden; box-shadow: 0 16px 40px rgb(4 23 74 / 12%); }
.dm-banner img { width: 100%; height: auto; display: block; }

/* noi dung cai tien: bai gioi thieu danh muc, mo ta video */
.dm-bai .prose h2:first-child { margin-top: 0; }
.vid-mo { margin-top: 24px; }
.prose table { display: table; }
@media (max-width: 640px) { .prose table { display: block; } }

/* trang chu: cau hoi thuong gap + 4 buoc dat hang */
.faqs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
.faq { border: 1px solid var(--line); border-radius: 10px; background: var(--white); transition: border-color .2s, box-shadow .2s; }
.faq[open] { border-color: var(--line-2); box-shadow: 0 12px 30px rgb(4 23 74 / 8%); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 16px; padding: 18px 20px; font-weight: 600; color: var(--ink); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; background: var(--brand-tint); color: var(--brand); font-weight: 600; line-height: 1; }
.faq[open] summary::after { content: "−"; background: var(--flame); color: var(--white); }
.faq p { margin: 0; padding: 0 20px 18px; color: var(--muted); font-size: 15.5px; }
.faq p a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }
.quote-steps-n { margin: 22px 0 26px; }
.quote-steps-n span { display: flex; flex-direction: column; font-size: 13.5px; color: var(--muted); line-height: 1.4; }
.quote-steps-n b { font-size: 15px; color: var(--ink); font-weight: 600; }
@media (max-width: 960px) { .faqs { grid-template-columns: 1fr; } }

/* Heading in hoa (anh gop y 07/10/2026): H1 + H2; chu hoa trong to hon nen giam co ~10%, gian chu nhe */
h1, h2 { text-transform: uppercase; letter-spacing: .01em; line-height: 1.16; }
h1 { font-size: clamp(28px, 3vw, 40px); }
.hero-b h1 { font-size: clamp(32px, 3.5vw, 46px); max-width: 12em; }
.band-b h1 { font-size: clamp(28px, 3vw, 40px); }
.pd-info h1 { font-size: clamp(24px, 2.2vw, 30px); }
h2, .sec-head h2 { font-size: clamp(23px, 2.1vw, 30px); }
.prose h2, .h-sec { font-size: 21px; }
.cta-band h2 { font-size: clamp(20px, 1.8vw, 24px); }
.side-cta h2, .office h2 { font-size: 17px; }
.side-list h2, .ftr-h { font-size: 13px; letter-spacing: .06em; }
/* ten san pham, video tren the: giu chu thuong */
.card-sp-ten, .vid-h { text-transform: none; letter-spacing: normal; }
@media (max-width: 640px) { h1, .band-b h1 { font-size: 26px; } .hero-b h1 { font-size: 29px; } h2, .sec-head h2 { font-size: 22px; } .prose h2 { font-size: 19px; } }
.hero-c .hero-copy { max-width: 590px; }
.hero-b h1 { font-size: clamp(30px, 2.9vw, 42px); max-width: none; }
@media (max-width: 640px) { .hero-b h1 { font-size: 27px; } .hero-b h1 br { display: none; } }

/* Thong tin chi tiet san pham (lam lai theo gop y): muc luc co dinh + bai trong khung trang */
.pd-bai { background: var(--soft); padding: 72px 0 96px; border-top: 1px solid var(--line); }
.pd-bai-in { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 40px; align-items: start; }
.pd-toc { position: sticky; top: 100px; display: grid; gap: 14px; padding: 22px; background: var(--white); border: 1px solid var(--line); border-radius: 12px; }
.pd-toc-h { margin: 0; font: 600 13px/1 var(--f); letter-spacing: .06em; text-transform: uppercase; color: var(--flame-d); }
.pd-toc ol { list-style: none; margin: 0; padding: 0; counter-reset: m; display: grid; gap: 2px; }
.pd-toc li { counter-increment: m; }
.pd-toc li a { display: flex; gap: 10px; padding: 8px 10px; border-radius: 8px; font-size: 14px; line-height: 1.4; color: var(--text); transition: background .15s, color .15s; }
.pd-toc li a::before { content: counter(m, decimal-leading-zero); flex: none; font-weight: 600; color: var(--brand); font-variant-numeric: tabular-nums; }
.pd-toc li a:hover { background: var(--brand-tint); color: var(--brand); }
.pd-toc .btn { width: 100%; margin-top: 4px; }
.pd-toc-tel { display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; color: var(--brand); font-variant-numeric: tabular-nums; }
.pd-toc-tel .ic { width: 18px; height: 18px; }
.prose-pd { background: var(--white); border: 1px solid var(--line); border-radius: 12px; padding: 44px 52px; max-width: none; }
.prose-pd .band-k { margin-bottom: 4px; }
.prose-pd .h-sec { margin: 0 0 26px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.prose-pd .h-sec + p { font-size: 18px; line-height: 1.7; color: var(--ink); }
.prose-pd h2:not(.h-sec) { scroll-margin-top: 100px; position: relative; padding-left: 16px; margin: 2.2em 0 .8em; font-size: 19px; }
.prose-pd h2:not(.h-sec)::before { content: ""; position: absolute; left: 0; top: .15em; bottom: .15em; width: 4px; border-radius: 2px; background: var(--flame-grad); }
.prose-pd ul { list-style: none; padding: 0; display: grid; gap: 10px; }
.prose-pd ul li { position: relative; margin: 0; padding: 12px 14px 12px 44px; background: var(--soft); border-radius: 8px; }
.prose-pd ul li::before { content: ""; position: absolute; left: 14px; top: 15px; width: 18px; height: 18px; border-radius: 50%; background: var(--brand) url("data:image/svg+xml,%3Csvg xmlns=%27http://www.w3.org/2000/svg%27 viewBox=%270 0 24 24%27 fill=%27none%27 stroke=%27white%27 stroke-width=%273%27 stroke-linecap=%27round%27 stroke-linejoin=%27round%27%3E%3Cpath d=%27M6 12l4 4 8-8%27/%3E%3C/svg%3E") center / 12px no-repeat; }
.prose-pd ol { padding-left: 1.3em; }
.prose-pd .faq { margin: 0 0 10px; }
.prose-pd .faq p { padding: 0 20px 16px; margin: 0; }
.prose-pd table { margin: 1.2em 0 1.8em; }
@media (max-width: 960px) {
  .pd-bai { padding: 40px 0 64px; }
  .pd-bai-in { grid-template-columns: 1fr; gap: 20px; }
  .pd-toc { position: static; order: 2; }
  .prose-pd { padding: 28px 22px; }
}
@media (max-width: 640px) { .prose-pd { padding: 22px 16px; border-radius: 10px; } .prose-pd .h-sec + p { font-size: 16.5px; } .prose-pd ul li { padding: 10px 12px 10px 40px; } }

/* Da ngon ngu: nut chon ngon ngu + font Trung/Han (Be Vietnam Pro khong co chu CJK -> roi ve Noto Sans SC/KR) */
.lang-sw { position: relative; flex: none; }
.lang-sw summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: 6px; padding: 8px 11px; border: 1px solid var(--line-2); border-radius: 999px; font: 600 13px/1 var(--f); color: var(--ink); white-space: nowrap; }
.lang-sw summary::-webkit-details-marker { display: none; }
.lang-sw[open] summary, .lang-sw summary:hover { border-color: var(--brand); color: var(--brand); }
.lang-sw .ic { width: 16px; height: 16px; color: var(--brand); }
.lang-sw ul { position: absolute; right: 0; top: calc(100% + 8px); z-index: 70; list-style: none; margin: 0; padding: 6px; min-width: 160px; background: var(--white); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 16px 40px rgb(4 23 74 / 14%); }
.lang-sw li a { display: block; padding: 9px 12px; border-radius: 6px; font-size: 14px; color: var(--text); }
.lang-sw li a:hover { background: var(--brand-tint); color: var(--brand); }
.lang-sw a[aria-current] { color: var(--brand); font-weight: 600; }
html[lang="zh-Hans"] { --f: "Be Vietnam Pro", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; }
html[lang="ko"] { --f: "Be Vietnam Pro", "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif; }
html[lang="ko"] body { word-break: keep-all; overflow-wrap: anywhere; }
html[lang="zh-Hans"] h1, html[lang="zh-Hans"] h2, html[lang="ko"] h1, html[lang="ko"] h2 { letter-spacing: 0; }
@media (max-width: 640px) { .lang-sw summary { padding: 7px 9px; } }

/* ---- CMS: o bay chong rac (an voi nguoi dung, khong dung display:none de may gui rac van dien) ---- */
.hp { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
/* Video: anh bia + nut phat, bam moi tai YouTube (trang nhe, khong tai iframe khi vao trang) */
.player .vid-poster { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; border: 0; background: #000; cursor: pointer; }
.player .vid-poster img { width: 100%; height: 100%; object-fit: cover; opacity: .92; }
.player .vid-poster .vid-play { left: 50%; top: 50%; bottom: auto; width: 76px; height: 76px; transform: translate(-50%, -50%); }
.player .vid-poster .vid-play::after { left: 30px; top: 25px; border-width: 13px 0 13px 20px; }
.player .vid-poster:hover img { opacity: 1; }
.form-note.is-err { color: #B42318; }
/* ---- Tuong phan mau dat WCAG AA (Lighthouse Accessibility) ---- */
:root { --faint: #5F6B7A; --flame-d: #B4470A; }
.btn-flame-solid, .side-cta .btn-flame { background: #C2410C; color: #fff; text-shadow: none; box-shadow: 0 8px 22px rgb(194 65 12 / 30%); }
.btn-flame-solid:hover, .side-cta .btn-flame:hover { background: #9A3412; }
.facts-light .facts-note { color: var(--faint); }
.steps .step-n { color: #7F8CA0; }

/* ---- Tin tuc ---- */
.posts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.post { display: flex; flex-direction: column; background: var(--white); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; transition: box-shadow .2s, transform .2s; }
.post:hover { box-shadow: 0 18px 40px -24px rgb(12 60 156 / 35%); transform: translateY(-2px); }
.post-img { display: flex; align-items: center; justify-content: center; aspect-ratio: 16 / 10; background: var(--soft); overflow: hidden; color: var(--brand); }
.post-img img { width: 100%; height: 100%; object-fit: cover; }
.post-img .ic { width: 48px; height: 48px; }
.post-body { display: flex; flex-direction: column; gap: 8px; padding: 20px 22px 22px; flex: 1; }
.post-meta { margin: 0; font-size: 13.5px; color: var(--faint); }
.post-meta span { color: var(--brand); font-weight: 600; }
.post-ten { margin: 0; font-size: 19px; line-height: 1.35; font-weight: 600; text-transform: none; letter-spacing: 0; }
.post-ten a { color: var(--ink); }
.post-ten a:hover { color: var(--brand); }
.post-mo { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.6; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.post .more { margin-top: 6px; align-self: flex-start; }
.post-lon { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); }
.post-lon .post-img { aspect-ratio: auto; min-height: 320px; }
.post-lon .post-body { padding: 36px 40px; justify-content: center; }
.post-lon .post-ten { font-size: 26px; }
.narrow-l { max-width: 960px; }
.art-dau { padding-bottom: 0; }
.art-h1 { font-size: clamp(28px, 4vw, 42px); line-height: 1.2; margin: 6px 0 14px; }
.art-sapo { font-size: 19px; line-height: 1.6; color: var(--muted); margin: 0 0 14px; max-width: 46em; }
.art-anh { margin: 26px 0 0; border-radius: 16px; overflow: hidden; background: var(--soft); }
.art-anh img { width: 100%; height: auto; max-height: 520px; object-fit: cover; }
.side-sp a { display: flex; align-items: center; gap: 12px; }
.side-sp img { width: 56px; height: 56px; object-fit: contain; background: var(--soft); border-radius: 8px; flex: none; }
@media (max-width: 960px) {
  .posts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .post-lon { grid-template-columns: 1fr; }
  .post-lon .post-img { min-height: 0; aspect-ratio: 16 / 10; }
  .post-lon .post-body { padding: 22px; }
}
@media (max-width: 640px) {
  .posts { grid-template-columns: 1fr; gap: 20px; }
  .post-lon .post-ten { font-size: 21px; }
}

/* ---- Anh, trich dan chen tu trinh soan ---- */
.prose figure { margin: 1.6em 0; }
.prose figure img, .prose img { display: block; max-width: 100%; height: auto; border-radius: 12px; }
.prose figure img { margin: 0; }
.prose figcaption { margin-top: 8px; font-size: 14px; color: var(--muted); text-align: center; }
.prose blockquote { margin: 1.6em 0; padding: 14px 20px; border-left: 4px solid var(--flame); background: var(--soft); border-radius: 0 10px 10px 0; color: var(--text); }
.prose blockquote p:last-child { margin-bottom: 0; }

/* ---- Slider phan dau trang chu: cac slide chong trong cung mot o luoi (chieu cao = slide cao nhat, khong nhay bo cuc) ---- */
.hero-sl { padding: 0; min-height: 0; }
.hero-sl .sl-ds { display: grid; }
.hero-sl .sl { grid-area: 1 / 1; position: relative; padding: 72px 0 120px; min-height: calc(min(92vw, 1800px) / 2.663 + 80px);
  opacity: 0; visibility: hidden; transition: opacity .8s ease, visibility 0s linear .8s; }
.hero-sl .sl.is-on { opacity: 1; visibility: visible; z-index: 1; transition: opacity .8s ease; }
.hero-sl .hero-art::after { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, #08245F 0%, rgb(8 36 95 / 82%) 30%, rgb(8 36 95 / 25%) 62%, transparent 85%); }
.hero-sl .sl:first-child .hero-art::after { display: none; }   /* banner chinh da thiet ke nen toi ben trai */
.hero-sl .hero-art img { object-position: right center; }
.hero-sl .sl-h { color: var(--white); font-size: clamp(30px, 2.9vw, 42px); line-height: 1.1; margin: 0 0 22px; max-width: 13em; text-transform: uppercase; letter-spacing: -.01em; }
.hero-sl .sl-h em { font-style: normal; background: var(--flame-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sl-dk { position: absolute; left: 0; right: 0; bottom: 96px; z-index: 3; display: flex; align-items: center; gap: 10px; pointer-events: none; }
.sl-dk > * { pointer-events: auto; }
.sl-nut { width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgb(255 255 255 / 35%); background: rgb(4 23 74 / 45%); color: #fff;
  display: grid; place-items: center; cursor: pointer; transition: background .2s, border-color .2s; }
.sl-nut:hover { background: rgb(4 23 74 / 80%); border-color: #fff; }
.sl-nut svg { width: 18px; height: 18px; }
.sl-dung .i-chay, .sl-dung.is-dung .i-dung { display: none; }
.sl-dung.is-dung .i-chay { display: inline; }
.sl-cham { display: flex; gap: 8px; align-items: center; padding: 0 4px; }
.sl-dot { width: 10px; height: 10px; padding: 0; border-radius: 999px; border: 0; background: rgb(255 255 255 / 45%); cursor: pointer; transition: width .3s, background .3s; }
.sl-dot.is-on { width: 28px; background: var(--flame); }
.sl-dot:focus-visible, .sl-nut:focus-visible { outline: 2px solid #FFB067; outline-offset: 3px; }
@media (max-width: 960px) {
  .hero-sl .sl { display: flex; flex-direction: column-reverse; padding: 40px 0 0; min-height: 0; }
  .hero-sl .hero-art::after { display: none; }
  .hero-sl .hero-art img { object-position: center; }
  .sl-dk { bottom: 14px; justify-content: center; }
  .sl-nut { width: 36px; height: 36px; }
}
@media (max-width: 640px) { .hero-sl .sl-h { font-size: 27px; } .hero-sl .sl-h br { display: none; } }
@media (prefers-reduced-motion: reduce) { .hero-sl .sl, .hero-sl .sl.is-on { transition: none; } }
/* Slider: chua cho cum nut dieu khien duoi noi dung (may tinh); dien thoai: noi dung bam dau slide */
.hero-sl .sl { padding-bottom: 168px; }
@media (max-width: 960px) {
  .hero-sl .sl { padding-bottom: 64px; justify-content: flex-end; }
  .sl-dk { bottom: 16px; }
}

/* ---- Dong tac gia cuoi bai, nut Zalo noi (may tinh) ---- */
.prose .art-tacgia { display: flex; gap: 12px; align-items: flex-start; margin-top: 2.2em; padding: 16px 18px; background: var(--soft); border-radius: 12px; font-size: 14px; line-height: 1.6; color: var(--muted); }
.prose .art-tacgia .ic { width: 22px; height: 22px; flex: none; color: var(--brand); margin-top: 1px; }
.zalo-noi { position: fixed; right: 22px; bottom: 22px; z-index: 40; display: none; align-items: center; gap: 8px; padding: 12px 18px 12px 14px;
  border-radius: 999px; background: #0068FF; color: #fff; font-weight: 600; font-size: 14.5px; box-shadow: 0 12px 28px -10px rgb(0 104 255 / 60%); transition: transform .2s, box-shadow .2s; }
.zalo-noi:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 16px 32px -10px rgb(0 104 255 / 70%); }
.zalo-noi svg { width: 22px; height: 22px; }
@media (min-width: 961px) { .zalo-noi { display: inline-flex; } }
@media print { .zalo-noi { display: none !important; } }
/* Cham chuyen slide: vung bam 24px (chuan cham ngon tay), phan nhin thay van la vach nho */
.sl-cham { gap: 2px; }
.sl-dot { position: relative; width: 24px; height: 24px; background: none; border-radius: 0; }
.sl-dot::before { content: ""; position: absolute; left: 50%; top: 50%; width: 10px; height: 10px; transform: translate(-50%, -50%);
  border-radius: 999px; background: rgb(255 255 255 / 45%); transition: width .3s, background .3s; }
.sl-dot.is-on { width: 36px; background: none; }
.sl-dot.is-on::before { width: 28px; background: var(--flame); }

/* ---- Slider: thanh tien do tren cham dang chon, anh phong nhe, chu hien dan khi doi slide ---- */
.sl-dot.is-on::before { background: rgb(255 255 255 / 45%); }
.sl-dot.is-on::after { content: ""; position: absolute; left: 4px; top: 50%; width: 28px; height: 10px; transform: translateY(-50%);
  border-radius: 999px; background: var(--flame); }
.hero-sl.sl-chay .sl-dot.is-on::after { animation: sl-tien 6.5s linear both; }
@keyframes sl-tien { from { width: 10px; } to { width: 28px; } }
.hero-sl .hero-art { overflow: hidden; }
.hero-sl .sl .hero-art img { transform: scale(1.06); transition: transform 7s ease-out; }
.hero-sl .sl.is-on .hero-art img { transform: none; }
.hero-sl .sl:first-child .hero-art img { transform: none; }
.hero-sl.da-chuyen .sl:first-child:not(.is-on) .hero-art img { transform: scale(1.06); }
.hero-sl.da-chuyen .sl.is-on .hero-copy > * { animation: sl-len .7s cubic-bezier(.2,.7,.2,1) both; }
.hero-sl.da-chuyen .sl.is-on .hero-copy > :nth-child(2) { animation-delay: .08s; }
.hero-sl.da-chuyen .sl.is-on .hero-copy > :nth-child(3) { animation-delay: .16s; }
.hero-sl.da-chuyen .sl.is-on .hero-copy > :nth-child(n+4) { animation-delay: .24s; }
@keyframes sl-len { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .hero-sl .sl .hero-art img, .hero-sl.da-chuyen .sl:first-child:not(.is-on) .hero-art img { transform: none; transition: none; }
  .hero-sl.da-chuyen .sl.is-on .hero-copy > *, .hero-sl.sl-chay .sl-dot.is-on::after { animation: none; }
}
/* Slide cu tat nhanh, slide moi hien sau mot nhip -> khong thay hai lop chu chong nhau luc chuyen */
.hero-sl .sl { transition: opacity .35s ease, visibility 0s linear .35s; }
.hero-sl .sl.is-on { transition: opacity .6s ease .2s; }
@media (prefers-reduced-motion: reduce) { .hero-sl .sl, .hero-sl .sl.is-on { transition: none; } }