/* T21 - Chuyên gia chuyển đổi số: tông đen + cam thương hiệu */
:root {
    --brand: #FF6E01; --brand-dk: #E05A00; --brand-text: #C24E00; --brand-soft: #FFF1E6;
    --ink: #1A1A1A; --ink-2: #241F1C; --ink-3: #33291F;
    --white: #FFFFFF; --off: #FAF8F6; --line: #EFEAE5; --muted: #857A72; --gray-dk: #4A4440; --text: #1F1B18;
    --radius: 12px; --radius-lg: 22px;
    --shadow: 0 8px 40px rgba(26, 26, 26, .08); --shadow-lg: 0 20px 60px rgba(26, 26, 26, .14);
    --font: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --font-num: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --header-h: 68px;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }
body { margin: 0; font-family: var(--font); color: var(--text); background: var(--off); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, iframe, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { color: var(--ink); line-height: 1.25; margin: 0 0 .6em; letter-spacing: -.01em; overflow-wrap: break-word; }
p { margin: 0 0 1em; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; }
.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 16px; }
.skip-link { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--brand); color: #fff; padding: 8px 14px; border-radius: 8px; }
.skip-link:focus { left: 8px; }
main:focus { outline: none; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 10px 22px; border-radius: 999px; border: 2px solid transparent; font-weight: 700; font-size: 15px; line-height: 1.2; cursor: pointer; transition: background .2s, color .2s, border-color .2s, transform .2s; text-align: center; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dk); }
.btn-outline { border-color: rgba(255, 255, 255, .45); color: #fff; background: transparent; }
.btn-outline:hover { border-color: var(--brand); color: var(--brand); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-text); }
.link-arrow { color: var(--brand-text); font-weight: 700; display: inline-flex; gap: 6px; align-items: center; }
.link-arrow:hover { color: var(--brand-dk); text-decoration: underline; }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(26, 26, 26, .96); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255, 255, 255, .08); }
.header-inner { display: flex; align-items: center; gap: 20px; min-height: var(--header-h); }
.brand { display: inline-flex; align-items: center; color: #fff; font-weight: 800; flex-shrink: 0; }
.brand img { height: 44px; width: auto; }
.site-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-item { position: relative; display: flex; align-items: center; }
.nav-item.has-children .nav-link { padding-right: 4px; }
.nav-caret { display: inline-grid; place-items: center; width: 24px; height: 32px; margin-right: 6px; padding: 0; border: 0; background: transparent; color: rgba(255, 255, 255, .7); cursor: pointer; transition: transform .2s, color .2s; }
.nav-item.has-children:hover .nav-caret, .nav-item.has-children:focus-within .nav-caret, .nav-item.is-open .nav-caret { color: var(--brand); transform: rotate(180deg); }
.nav-link { display: block; padding: 10px 14px; color: rgba(255, 255, 255, .85); font-weight: 600; font-size: 15px; border-radius: 8px; }
.nav-link:hover, .nav-link[aria-current="page"] { color: var(--brand); }
.nav-dropdown { position: absolute; top: 100%; left: 0; min-width: 240px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 8px; display: none; }
.nav-item.has-children:hover .nav-dropdown, .nav-item.has-children:focus-within .nav-dropdown, .nav-item.is-open .nav-dropdown { display: block; }
.nav-dropdown::before { content: ""; position: absolute; left: 0; right: 0; top: -10px; height: 10px; }
.nav-dropdown a { display: block; padding: 8px 12px; border-radius: 8px; color: var(--ink); font-size: 14px; white-space: nowrap; }
.nav-dropdown a span { color: var(--muted); font-size: 12px; }
.nav-dropdown a { display: flex; align-items: center; gap: 10px; }
.nav-icon { width: 28px; height: 28px; flex-shrink: 0; display: inline-grid; place-items: center; border-radius: 8px; background: var(--brand-soft); font-style: normal; font-size: 15px; line-height: 1; }
.nav-icon img { width: 22px; height: 22px; object-fit: contain; }
.nav-dropdown a:hover { background: var(--brand-soft); color: var(--brand-text); }
.header-call { min-height: 40px; padding: 8px 16px; font-size: 14px; white-space: nowrap; }
.nav-link { white-space: nowrap; }
.lang-switch { display: inline-flex; align-items: center; padding: 3px; border: 1px solid rgba(255, 255, 255, .16); border-radius: 999px; flex-shrink: 0; }
.lang-switch a { min-width: 34px; padding: 4px 8px; border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: .04em; text-align: center; color: rgba(255, 255, 255, .7); }
.lang-switch a:hover { color: #fff; }
.lang-switch a[aria-current] { background: var(--brand); color: #fff; pointer-events: none; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; position: relative; cursor: pointer; margin-left: auto; }
.nav-toggle span, .nav-toggle::before, .nav-toggle::after { content: ""; position: absolute; left: 11px; right: 11px; height: 2px; background: #fff; border-radius: 2px; transition: transform .2s, opacity .2s; }
.nav-toggle span { top: 21px; } .nav-toggle::before { top: 14px; } .nav-toggle::after { top: 28px; }
.nav-open .nav-toggle span { opacity: 0; }
.nav-open .nav-toggle::before { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle::after { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Sections ---------- */
.section { padding: 64px 0; }
.section--white { background: var(--white); }
.section--dark { background: var(--ink); color: rgba(255, 255, 255, .85); }
.section--dark h1, .section--dark h2, .section--dark h3 { color: #fff; }
.section-head { max-width: 720px; margin-bottom: 32px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; color: var(--brand-text); margin-bottom: 10px; }
.section--dark .eyebrow, .hero .eyebrow { color: var(--brand); }
.section-title { font-size: clamp(26px, 4vw, 38px); font-weight: 800; }
.lead { color: var(--gray-dk); font-size: clamp(15px, 2vw, 17px); }
.section--dark .lead { color: rgba(255, 255, 255, .72); }
.section-foot { margin-top: 28px; }
.rich > :last-child { margin-bottom: 0; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: radial-gradient(1200px 600px at 85% 10%, rgba(255, 110, 1, .22), transparent 60%), linear-gradient(160deg, var(--ink) 0%, var(--ink-2) 60%, var(--ink-3) 100%); color: rgba(255, 255, 255, .82); padding: 72px 0 80px; }
.hero__grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 48px; align-items: center; }
.hero__eyebrow { display: inline-flex; align-items: center; gap: 10px; padding: 6px 14px; border: 1px solid rgba(255, 255, 255, .16); border-radius: 999px; font-size: 13px; font-weight: 600; color: #fff; margin-bottom: 22px; }
.hero__eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 4px rgba(255, 110, 1, .25); }
.hero h1 { color: #fff; font-size: clamp(42px, 7vw, 68px); font-weight: 800; margin-bottom: 14px; }
.hero__subtitle { color: #fff; font-size: clamp(18px, 2.6vw, 24px); font-weight: 600; line-height: 1.45; margin-bottom: 18px; }
.hero__subtitle mark { background: var(--brand); color: #fff; padding: 0 8px; border-radius: 6px; }
.hero__desc { font-size: 16px; max-width: 560px; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero__visual { display: flex; flex-direction: column; align-items: center; gap: 28px; }
.hero__avatar { width: min(280px, 70vw); aspect-ratio: 1; border-radius: 50%; padding: 6px; background: conic-gradient(from 200deg, var(--brand), rgba(255, 110, 1, .1), var(--brand)); }
.hero__avatar img { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; border-radius: 50%; border: 4px solid var(--ink); }
.hero__stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; width: 100%; max-width: 360px; }
.stat-pill { background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .12); border-radius: var(--radius); padding: 14px 16px; text-align: center; }
.stat-pill strong { display: block; font-family: var(--font-num); font-size: 28px; font-weight: 800; color: var(--brand); line-height: 1.1; }
.stat-pill span { display: block; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: rgba(255, 255, 255, .7); margin-top: 4px; }

/* ---------- Highlights ---------- */
.highlights { margin-top: -40px; position: relative; z-index: 2; }
.highlight-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.highlight { background: #fff; border-radius: var(--radius-lg); padding: 26px 24px; box-shadow: var(--shadow); border-top: 4px solid var(--brand); }
.highlight strong { font-family: var(--font-num); font-size: 40px; font-weight: 800; color: var(--brand); line-height: 1; }
.highlight h3 { font-size: 17px; margin: 10px 0 6px; }
.highlight p { color: var(--muted); font-size: 14px; margin: 0; }

/* ---------- Cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 18px; }
.card-grid--3 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }
.card { position: relative; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; transition: transform .25s, box-shadow .25s, border-color .25s; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: rgba(255, 110, 1, .35); }
.card__icon { width: 54px; height: 54px; display: grid; place-items: center; font-size: 26px; border-radius: 14px; background: var(--brand-soft); margin-bottom: 16px; flex-shrink: 0; }
.card__logo { height: 54px; width: auto; max-width: 160px; object-fit: contain; margin-bottom: 16px; }
.card__abbr { display: inline-flex; align-self: flex-start; font-family: var(--font-num); font-weight: 800; font-size: 18px; color: var(--brand-text); background: var(--brand-soft); border-radius: 10px; padding: 6px 12px; margin-bottom: 14px; }
.card__tag { display: inline-block; align-self: flex-start; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--brand-text); margin-bottom: 8px; }
.card__badge { display: inline-block; align-self: flex-start; font-size: 12px; font-weight: 700; color: #fff; background: var(--brand); border-radius: 999px; padding: 3px 10px; margin-bottom: 10px; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card h3 a::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.card p { color: var(--gray-dk); font-size: 15px; margin-bottom: 14px; }
.card .link-arrow { margin-top: auto; position: relative; z-index: 1; font-size: 14px; }
.card--plain:hover { transform: none; }
.intro-card { display: flex; gap: 18px; background: var(--ink); color: rgba(255, 255, 255, .8); border-radius: var(--radius-lg); padding: 24px 26px; margin-bottom: 22px; }
.intro-card h3 { color: #fff; margin-bottom: 6px; font-size: 18px; }
.intro-card p { margin: 0; }
.intro-card::before { content: "🏛️"; font-size: 30px; line-height: 1; }

/* ---------- Posts ---------- */
.post-card { padding: 0; overflow: hidden; }
.post-card__img { aspect-ratio: 1200 / 630; width: 100%; object-fit: cover; background: var(--line); }
.post-card__body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.post-card__meta { display: flex; flex-wrap: wrap; gap: 6px 12px; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.post-card__cat { color: var(--brand-text); font-weight: 700; text-transform: uppercase; letter-spacing: .06em; font-size: 11px; }
.post-card h3 { font-size: 17px; line-height: 1.4; }
.post-card p { font-size: 14px; }
.pagination { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 32px; }
.pagination a, .pagination span { min-width: 42px; height: 42px; padding: 0 12px; display: inline-grid; place-items: center; border-radius: 10px; border: 1px solid var(--line); background: #fff; font-weight: 700; }
.pagination span[aria-current] { background: var(--brand); border-color: var(--brand); color: #fff; }
.pagination a:hover { border-color: var(--brand); color: var(--brand-text); }
.empty { background: #fff; border: 1px dashed var(--line); border-radius: var(--radius-lg); padding: 32px; text-align: center; color: var(--muted); }

/* ---------- Page header / breadcrumb ---------- */
.page-top { background: var(--ink); color: rgba(255, 255, 255, .75); padding: 18px 0 0; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 6px; font-size: 13px; }
.breadcrumbs a:hover { color: var(--brand); }
.breadcrumbs [aria-current] { color: #fff; }
.page-hero { background: linear-gradient(160deg, var(--ink) 0%, var(--ink-2) 100%); color: rgba(255, 255, 255, .78); padding: 28px 0 48px; }
.page-hero h1 { color: #fff; font-size: clamp(30px, 5vw, 46px); font-weight: 800; }
.page-hero .lead { color: rgba(255, 255, 255, .75); max-width: 720px; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 36px; align-items: start; }
.aside { display: grid; gap: 20px; position: sticky; top: calc(var(--header-h) + 20px); }
.panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; }
.panel h2, .panel h3 { font-size: 17px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips a { padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--off); font-size: 14px; font-weight: 600; }
.chips a:hover, .chips a[aria-current] { background: var(--brand); color: #fff; border-color: var(--brand); }
.consult-card { background: var(--ink); color: rgba(255, 255, 255, .78); border: 0; }
.consult-card h3 { color: #fff; }
.consult-card .btn { width: 100%; margin-top: 8px; }

/* ---------- Certificates ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 420px), 1fr)); gap: 22px; }
.cert { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 20px; align-items: start; }
.cert__img img { border-radius: 10px; border: 1px solid var(--line); width: 100%; height: auto; }
.cert h3 { font-size: 17px; line-height: 1.4; }
.cert dl { margin: 0; display: grid; gap: 4px; font-size: 14px; }
.cert dt { font-weight: 700; color: var(--ink); display: inline; }
.cert dd { display: inline; margin: 0; color: var(--gray-dk); }

/* ---------- Mission ---------- */
.mission { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.mission__quote { font-size: clamp(18px, 2.4vw, 22px); font-weight: 600; color: #fff; border-left: 4px solid var(--brand); padding: 4px 0 4px 20px; margin: 0 0 20px; }
.product-card { background: #fff; color: var(--text); border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow-lg); }
.product-card h3 { color: var(--ink); font-size: 22px; }
.product-card ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.product-card li { padding-left: 28px; position: relative; }
.product-card li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; border-radius: 50%; background: var(--brand-soft); color: var(--brand-text); font-weight: 800; font-size: 12px; display: grid; place-items: center; margin-top: 3px; }

/* ---------- Contact ---------- */
#lien-he, .contact-page { background: var(--ink-2); }
.contact-layout { display: grid; gap: 32px; }
.contact-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 20px 40px; }
.contact-head__text { flex: 1 1 520px; max-width: 720px; }
.contact-head__text .lead { margin-bottom: 0; }
.contact-items { list-style: none; padding: 0; margin: 28px 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 14px; }
.contact-item { display: flex; gap: 14px; align-items: center; padding: 16px 18px; border: 1px solid rgba(255, 255, 255, .1); border-radius: var(--radius); background: rgba(255, 255, 255, .04); min-width: 0; }
.contact-item > div { min-width: 0; }
.contact-item__icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: rgba(255, 110, 1, .14); font-size: 20px; flex-shrink: 0; }
.contact-item strong { display: block; color: #fff; font-size: 13px; line-height: 1.4; }
.contact-item > div span, .contact-item > div a { display: block; color: rgba(255, 255, 255, .75); font-size: 15px; line-height: 1.45; overflow-wrap: anywhere; }
.contact-item a:hover { color: var(--brand); }
.contact-ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.form-card { background: #fff; color: var(--text); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-lg); }
.form-card h2, .form-card h3 { color: var(--ink); }
.booking { padding: 36px 40px; }
.booking__head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; margin-bottom: 28px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.booking__badge { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 700; color: var(--brand-text); background: var(--brand-soft); border-radius: 999px; padding: 6px 14px; }
.booking__head h2 { font-size: clamp(20px, 2.4vw, 26px); margin-bottom: 4px; }
.booking__head p { margin: 0; color: var(--muted); font-size: 14px; }
.booking__body { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 40px; }
.booking__panel--side { display: grid; gap: 22px; align-content: start; padding-left: 40px; border-left: 1px solid var(--line); }
.booking__step { display: flex; align-items: center; gap: 10px; font-size: 16px; margin-bottom: 18px; }
.booking__panel--side .booking__step { margin-bottom: -4px; }
.booking__step span { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--ink); color: #fff; font-family: var(--font-num); font-size: 13px; flex-shrink: 0; }
.booking__foot { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 20px 40px; align-items: end; margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--line); }
.booking__foot .captcha { margin: 0; padding: 0; border: 0; }
.booking__action { grid-column: 2; }
.booking__foot .captcha + .booking__action { grid-column: auto; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 16px; }
.field { min-width: 0; }
.form-grid > .field { display: flex; flex-direction: column; justify-content: flex-end; }
.field--full { grid-column: 1 / -1; }
.field label, .field legend { display: block; font-weight: 600; font-size: 14px; line-height: 1.4; color: var(--ink); margin-bottom: 6px; padding: 0; }
.field .hint { font-weight: 500; font-size: 12px; color: var(--muted); margin-left: 6px; }
.field input[type=text], .field input[type=tel], .field input[type=email], .field input[type=number], .field input[type=date], .field select, .field textarea {
    width: 100%; height: 46px; padding: 0 14px; border: 1px solid #DED6CF; border-radius: 10px; font: inherit; font-size: 15px; line-height: 1.4;
    background-color: var(--off); color: var(--text); transition: border-color .15s, box-shadow .15s, background-color .15s; -webkit-appearance: none; appearance: none; }
.field select { padding-right: 40px; cursor: pointer; text-overflow: ellipsis;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%23857A72' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 14px center; }
.field input[type=date] { padding-right: 10px; }
.field textarea { height: auto; min-height: 110px; padding: 12px 14px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: #B3A99F; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: #C9BEB4; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--brand); background-color: #fff; outline: none; box-shadow: 0 0 0 3px rgba(255, 110, 1, .16); }
.field fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { position: relative; display: inline-flex; margin: 0; cursor: pointer; }
.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.chip span { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border: 1px solid #DED6CF; border-radius: 999px; background: var(--off); font-size: 14px; font-weight: 500; line-height: 1.3; color: var(--gray-dk); transition: background .15s, border-color .15s, color .15s; }
.chip span::before { content: "+"; font-weight: 700; color: var(--muted); }
.chip:hover span { border-color: var(--brand); color: var(--brand-text); }
.chip input:checked + span { background: var(--brand); border-color: var(--brand); color: #fff; }
.chip input:checked + span::before { content: "✓"; color: #fff; }
.chip input:focus-visible + span { outline: 2px solid var(--brand); outline-offset: 2px; }
.req { color: var(--brand-dk); text-decoration: none; }
.captcha { margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--line); }
.captcha__row { display: grid; grid-template-columns: auto auto minmax(0, 1fr); gap: 10px; align-items: center; }
.captcha__row img { height: 46px; width: auto; border-radius: 10px; border: 1px solid var(--line); background: var(--off); }
.captcha__refresh { height: 46px; padding: 0 14px; border: 1px solid #DED6CF; border-radius: 10px; background: #fff; font: inherit; font-size: 14px; font-weight: 600; color: var(--gray-dk); cursor: pointer; white-space: nowrap; }
.captcha__refresh:hover { border-color: var(--brand); color: var(--brand-text); }
.field .captcha__input { text-transform: uppercase; letter-spacing: .2em; font-weight: 700; }
.booking__submit { width: 100%; min-height: 50px; font-size: 16px; box-shadow: 0 10px 24px rgba(255, 110, 1, .28); }
.booking__note { margin: 10px 0 0; font-size: 12px; line-height: 1.5; color: var(--muted); }
.micro { font-size: 13px; color: var(--muted); }
.feedback { padding: 12px 16px; border-radius: 10px; margin-bottom: 16px; font-weight: 600; }
.feedback.success { background: #E8F7EE; color: #17643A; }
.feedback.error { background: #FDECEC; color: #A42020; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(120deg, var(--brand) 0%, var(--brand-dk) 100%); color: #fff; border-radius: var(--radius-lg); padding: 36px; display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between; }
.cta-band h2 { color: #fff; margin-bottom: 6px; font-size: clamp(22px, 3vw, 30px); }
.cta-band p { margin: 0; color: rgba(255, 255, 255, .9); max-width: 620px; }
.cta-band .btn-primary { background: #fff; color: var(--brand-text); }
.cta-band .btn-outline { border-color: rgba(255, 255, 255, .7); }
.cta-band .btn-outline:hover { color: #fff; border-color: #fff; }

/* ---------- About ---------- */
.about-hero { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 40px; align-items: center; }
.about-body { background: #fff; border-radius: var(--radius-lg); padding: 32px; border: 1px solid var(--line); }
.about-body h3 { margin-top: 1.2em; }
.about-body ul { padding-left: 20px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(255, 255, 255, .7); padding: 52px 0 24px; margin-top: 0; border-top: 1px solid rgba(255, 255, 255, .08); }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 32px; }
.footer-brand p { margin-top: 14px; font-size: 14px; }
.footer-links, .footer-contact { display: grid; gap: 10px; align-content: start; font-size: 15px; }
.footer-links a:hover, .footer-contact a:hover, .footer-bottom a:hover { color: var(--brand); }
.footer-bct img { width: 150px; height: auto; margin-top: 6px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); margin-top: 32px; padding-top: 20px; display: flex; flex-wrap: wrap; gap: 6px 24px; font-size: 13px; }
.footer-bottom p { margin: 0; }
.footer-bottom strong { color: #fff; }

/* ---------- Floating ---------- */
.float-call, .to-top { position: fixed; right: 18px; z-index: 40; width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; box-shadow: var(--shadow-lg); }
.float-call { bottom: 84px; background: #25A244; color: #fff; font-size: 22px; animation: ring 2.4s infinite; }
.to-top { bottom: 20px; background: var(--ink); color: #fff; font-weight: 800; opacity: 0; pointer-events: none; transition: opacity .2s; }
.to-top.is-visible { opacity: 1; pointer-events: auto; }
@keyframes ring { 0%, 100% { box-shadow: 0 0 0 0 rgba(37, 162, 68, .45); } 50% { box-shadow: 0 0 0 12px rgba(37, 162, 68, 0); } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } }

/* ---------- Responsive ---------- */
@media (max-width: 1320px) {
    .header-call__text { display: none; }
    .header-call { width: 42px; padding: 0; }
}
@media (max-width: 1100px) {
    .nav-link { padding: 10px 9px; font-size: 14px; }
    .header-inner { gap: 12px; }
}
@media (max-width: 900px) {
    :root { --header-h: 62px; }
    .nav-toggle { display: block; }
    /* backdrop-filter tạo khối chứa mới làm panel menu (fixed) co theo header */
    .site-header { backdrop-filter: none; background: var(--ink); }
    .lang-switch { margin-left: auto; }
    .header-call { margin-left: 0; }
    .nav-toggle { margin-left: 4px; }
    .site-nav { position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; background: var(--ink); flex-direction: column; align-items: stretch; gap: 0; padding: 12px 16px 32px; overflow-y: auto; display: none; margin: 0; }
    .nav-open .site-nav { display: flex; }
    .nav-item { flex-wrap: wrap; border-bottom: 1px solid rgba(255, 255, 255, .08); }
    .nav-link { flex: 1; padding: 14px 4px; font-size: 17px; border-radius: 0; }
    .nav-caret { width: 44px; height: 44px; margin: 0; }
    .nav-item.has-children:hover .nav-caret, .nav-item.has-children:focus-within .nav-caret { transform: none; color: rgba(255, 255, 255, .7); }
    .nav-item.is-open .nav-caret { transform: rotate(180deg); color: var(--brand); }
    .nav-dropdown, .nav-item.has-children:hover .nav-dropdown, .nav-item.has-children:focus-within .nav-dropdown { position: static; display: none; flex-basis: 100%; min-width: 0; background: transparent; box-shadow: none; padding: 0 0 10px 12px; }
    .nav-item.is-open .nav-dropdown { display: block; }
    .nav-dropdown a { color: rgba(255, 255, 255, .75); }
    .hero { padding: 48px 0 72px; }
    .hero__grid, .mission, .layout, .about-hero, .booking__body, .booking__foot { grid-template-columns: minmax(0, 1fr); }
    .booking { padding: 28px 24px; }
    .booking__panel--side { padding-left: 0; border-left: 0; padding-top: 24px; border-top: 1px solid var(--line); }
    .booking__action, .booking__foot .captcha + .booking__action { grid-column: auto; }
    .hero__grid { gap: 32px; }
    .hero__avatar { width: min(220px, 60vw); }
    .aside { position: static; }
    .highlight-grid { grid-template-columns: minmax(0, 1fr); }
    .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
    .about-hero img { max-width: 220px; }
}
@media (max-width: 600px) {
    .section { padding: 48px 0; }
    .cert { grid-template-columns: minmax(0, 1fr); }
    .form-grid { grid-template-columns: minmax(0, 1fr); gap: 14px; }
    .contact-layout { gap: 24px; }
    .contact-ctas .btn { flex: 1 1 auto; padding: 10px 14px; font-size: 14px; white-space: nowrap; }
    .contact-items { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 22px; }
    .contact-item { flex-direction: column; align-items: flex-start; gap: 8px; padding: 12px; }
    .contact-item__icon { width: 34px; height: 34px; font-size: 16px; border-radius: 10px; }
    .contact-item > div span, .contact-item > div a { font-size: 14px; }
    .form-card { padding: 24px 18px; }
    .captcha__row { grid-template-columns: auto auto; }
    .captcha__row .captcha__input { grid-column: 1 / -1; }
    .cta-band { padding: 26px 20px; }
    .hero__ctas .btn { width: 100%; }
    .brand img { height: 38px; }
}