/* DNA Vietnam LLC - revamp. Layout: sticky white header, split hero with skyline fading into the page, 4-col card grids, red CTA band. */
:root {
  --red: #D7141C;
  --red-deep: #AF0F16;
  --red-text: #C8121A;
  --ink: #0E1A2C;
  --ink-2: #3A485C;
  --mute: #66758A;
  --line: #E1E6ED;
  --bg: #FFFFFF;
  --bg-soft: #F4F6F9;
  --bg-ink: #0B1423;
  --on-ink: #EAF0F7;
  --card: #FFFFFF;
  --head-bg: rgba(255,255,255,0.94);
  --fade: #FFFFFF;
  --font: "Poppins", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --maxw: 1180px;
  --r: 4px;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
:root { padding-block: env(safe-area-inset-top, 0px) env(safe-area-inset-bottom, 0px); }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 15px/1.65 var(--font); -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 800; letter-spacing: -0.02em; line-height: 1.12; text-wrap: balance; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }
.dot { color: var(--red); }
.wrap {
  max-width: var(--maxw); margin-inline: auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.eyebrow {
  font: 600 11px/1 var(--font); letter-spacing: 0.16em; text-transform: uppercase; color: var(--mute);
}
.eyebrow.red { color: var(--red-text); }

/* header */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 60; background: var(--bg); }
.site-head {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: var(--head-bg); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line);
}
.head-in { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo { display: flex; flex-direction: column; line-height: 1; gap: 3px; flex: none; }
.logo { align-items: flex-start; }
.logo img { height: 44px; width: auto; max-width: none; flex: none; align-self: flex-start; }
.site-foot .logo img { height: 80px; }
.logo b { font-weight: 800; font-size: 28px; letter-spacing: -0.04em; color: var(--red); }
.logo small { font-size: 7.5px; letter-spacing: 0.04em; font-weight: 600; color: var(--mute); }
.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { font-size: 13px; font-weight: 500; color: var(--ink-2); padding: 24px 0; position: relative; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.nav a[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--red); }
.head-tools { display: flex; align-items: center; gap: 14px; }
.lang { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; color: var(--mute); display: flex; gap: 6px; }
.lang button { all: unset; cursor: pointer; padding: 4px 2px; }
.lang button[aria-pressed="true"] { color: var(--ink); border-bottom: 2px solid var(--red); }
.menu-btn { all: unset; display: none; cursor: pointer; padding: 10px; }
.menu-btn span { display: block; width: 20px; height: 2px; background: var(--ink); margin: 4px 0; }

/* buttons & links */
.btn {
  display: inline-flex; align-items: center; gap: 10px; font: 600 12px/1 var(--font); padding: 13px 18px;
  border: 1px solid var(--red); background: var(--red); color: #fff; border-radius: var(--r); cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.btn:hover { background: var(--red-deep); border-color: var(--red-deep); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--ink); background: transparent; }
.btn.light { background: #fff; color: var(--red-deep); border-color: #fff; }
.btn.light:hover { background: #fff; color: var(--ink); }
.link-arrow { font-size: 12px; font-weight: 600; color: var(--red-text); display: inline-flex; gap: 8px; align-items: center; }
.link-arrow::after { content: "\2192"; transition: transform .15s; }
.link-arrow:hover::after { transform: translateX(3px); }

/* hero */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero-img {
  position: absolute; inset: 0 0 0 38%; background-size: cover; background-position: center;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 38%);
  mask-image: linear-gradient(90deg, transparent 0, #000 38%);
}
.hero-in { position: relative; padding-block: 76px 70px; max-width: var(--maxw); }
.hero h1 { font-size: clamp(38px, 5.6vw, 64px); margin-top: 18px; max-width: 12ch; }
.hero p.lead { margin-top: 22px; max-width: 46ch; color: var(--ink-2); font-size: 15px; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero.compact .hero-in { padding-block: 56px 52px; }
.hero.compact h1 { font-size: clamp(32px, 4.4vw, 50px); max-width: 16ch; }
.hero.dark { background: var(--bg-ink); color: var(--on-ink); border-bottom: 0; }
.hero.dark .eyebrow { color: #A9B7CC; }
.hero.dark p.lead { color: #C3CEDD; }
.hero.dark .hero-img { inset: 0 0 0 30%; -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 45%); mask-image: linear-gradient(90deg, transparent 0, #000 45%); }
.crumbs { font-size: 11px; color: var(--mute); display: flex; gap: 8px; margin-bottom: 26px; }
.crumbs a:hover { color: var(--ink); }
.hero.has-crumbs .eyebrow { margin-top: 0; }

/* value strip */
.values { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding-block: 30px; border-bottom: 1px solid var(--line); }
.value { display: flex; gap: 12px; align-items: flex-start; font-size: 12px; line-height: 1.4; color: var(--ink-2); }
.value svg { flex: none; width: 26px; height: 26px; stroke: var(--red); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.value b { display: block; color: var(--ink); font-weight: 600; font-size: 12.5px; }

/* sections */
.section { padding-block: 58px; }
.section.soft { background: var(--bg-soft); }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 30px; }
.sec-head h2 { font-size: clamp(24px, 3vw, 32px); margin-top: 12px; }
.sec-head p { color: var(--ink-2); max-width: 54ch; margin-top: 12px; }

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden;
  display: flex; flex-direction: column; min-width: 0; transition: border-color .15s, transform .15s;
}
a.card:hover { border-color: var(--ink-2); transform: translateY(-2px); }
.card .thumb { aspect-ratio: 16 / 9; background-size: cover; background-position: center; border-bottom: 1px solid var(--line); }
.card .body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card h3 { font-size: 15px; letter-spacing: -0.01em; }
.card p { font-size: 12.5px; color: var(--ink-2); line-height: 1.55; }
.card .more { margin-top: auto; padding-top: 6px; color: var(--red-text); font-size: 15px; }
.card .meta { font-size: 11px; color: var(--mute); display: flex; gap: 10px; flex-wrap: wrap; }
.tag { font: 600 10.5px/1 var(--font); letter-spacing: 0.08em; text-transform: uppercase; color: var(--red-text); }
.card.cta-tile { background: var(--bg-ink); color: var(--on-ink); border-color: var(--bg-ink); justify-content: flex-end; }
.card.cta-tile .body { flex: 0; padding: 22px; }
.card.cta-tile p { color: #B9C6D8; }
.card.cta-tile h3 { font-size: 20px; }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding-block: 38px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stats.three { grid-template-columns: repeat(3, 1fr); }
.stat { min-width: 0; }
.stat b { display: block; font-size: 28px; font-weight: 800; letter-spacing: -0.03em; color: var(--red-text); line-height: 1.1; }
.stat span { font-size: 12px; color: var(--ink-2); }

/* CTA band */
.band { position: relative; background: var(--bg-ink) center / cover; color: #fff; overflow: hidden; }
.band-in { display: grid; grid-template-columns: 1.1fr 0.9fr; min-height: 240px; }
.band-img { background-size: cover; background-position: center; min-height: 160px; }
.band-copy { background: var(--red); padding: 44px 44px; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 20px; }
.band-copy h2 { font-size: clamp(24px, 3vw, 32px); }
.band-copy .btn { background: #fff; color: var(--red-deep); border-color: #fff; }
.band-copy .btn:hover { background: var(--bg-ink); color: #fff; border-color: var(--bg-ink); }
.strip { background: var(--bg-soft); border: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 26px 30px; flex-wrap: wrap; border-radius: var(--r); }
.strip h3 { font-size: 20px; }
.strip p { color: var(--ink-2); font-size: 13px; margin-top: 6px; }

/* prose */
.prose { display: grid; gap: 16px; max-width: 64ch; color: var(--ink-2); }
.prose h3 { color: var(--ink); font-size: 18px; margin-top: 14px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.split.wide-left { grid-template-columns: 1.25fr 0.75fr; }
.aside-list { border-top: 1px solid var(--line); }
.aside-list li a, .aside-list li span {
  display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 12px 2px;
  border-bottom: 1px solid var(--line); font-size: 13px; color: var(--ink-2);
}
.aside-list li a:hover { color: var(--ink); }
.aside-list li a::after { content: "\2192"; color: var(--red-text); }
.aside-list h4 { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--mute); margin-bottom: 12px; font-weight: 600; }
.tabs { display: flex; gap: 26px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.tabs a { font-size: 12.5px; font-weight: 500; color: var(--ink-2); padding: 14px 0; white-space: nowrap; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a:hover { color: var(--ink); }
.tabs a.on { color: var(--red-text); border-color: var(--red); font-weight: 600; }

/* approach / why */
.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.trio.four { grid-template-columns: repeat(4, 1fr); }
.trio .it svg { width: 30px; height: 30px; stroke: var(--red); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.trio .it h3 { font-size: 15px; margin: 14px 0 8px; letter-spacing: -0.01em; }
.trio .it p { font-size: 13px; color: var(--ink-2); }

/* filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.chip {
  all: unset; cursor: pointer; font: 600 11.5px/1 var(--font); padding: 9px 13px; border: 1px solid var(--line);
  border-radius: 3px; color: var(--ink-2); background: var(--card);
}
.chip:hover { border-color: var(--ink-2); }
.chip[aria-pressed="true"] { background: var(--red); border-color: var(--red); color: #fff; }
.chip:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }
.search {
  width: 100%; max-width: 340px; font: 400 13px var(--font); padding: 11px 14px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink); border-radius: var(--r);
}
.empty { padding: 30px; text-align: center; color: var(--mute); border: 1px dashed var(--line); border-radius: var(--r); }

/* jobs / list rows */
.rows { border-top: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: center; padding: 16px 2px; border-bottom: 1px solid var(--line); font-size: 13.5px; }
.row b { font-weight: 600; }
.row span { color: var(--mute); font-size: 12px; }
.check li { position: relative; padding: 8px 0 8px 26px; border-bottom: 1px solid var(--line); font-size: 13.5px; color: var(--ink-2); }
.check li::before { content: ""; position: absolute; left: 4px; top: 16px; width: 10px; height: 5px; border-left: 2px solid var(--red); border-bottom: 2px solid var(--red); transform: rotate(-45deg); }

/* contact */
.info li { display: grid; grid-template-columns: 34px 1fr; gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 13.5px; }
.info svg { width: 22px; height: 22px; stroke: var(--red); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; margin-top: 2px; }
.info b { display: block; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mute); font-weight: 600; margin-bottom: 4px; }
.copy { all: unset; cursor: pointer; font-size: 11px; color: var(--red-text); margin-left: 10px; font-weight: 600; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form .full { grid-column: 1 / -1; }
.form label { font-size: 11.5px; font-weight: 600; color: var(--ink-2); display: grid; gap: 6px; }
.form input, .form textarea {
  font: 400 13.5px var(--font); padding: 12px 14px; border: 1px solid var(--line); background: var(--card); color: var(--ink);
  border-radius: var(--r); width: 100%;
}
.form textarea { min-height: 150px; resize: vertical; }
.form .btn { justify-self: start; }
.notice { grid-column: 1 / -1; font-size: 12.5px; color: var(--ink-2); background: var(--bg-soft); border: 1px solid var(--line); padding: 12px 14px; border-radius: var(--r); }
.map { position: relative; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: var(--bg-soft); min-height: 260px; }
.map svg.grid { position: absolute; inset: 0; width: 100%; height: 100%; }
.map .pin { position: absolute; left: 34%; top: 46%; width: 30px; height: 30px; transform: translate(-50%, -100%); }
.map .pin svg { width: 100%; height: 100%; }
.map .tile {
  position: absolute; right: 22px; top: 50%; transform: translateY(-50%); background: var(--card); border: 1px solid var(--line);
  padding: 20px 22px; width: min(280px, 56%); box-shadow: 0 10px 30px rgba(10,20,40,.12); border-radius: var(--r);
}
.map .tile h3 { font-size: 16px; margin-bottom: 8px; }
.map .tile p { font-size: 12.5px; color: var(--ink-2); margin-bottom: 12px; }

/* footer */
.site-foot { background: var(--bg-ink); color: #B8C4D5; margin-top: 0; }
.foot-in { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding-block: 52px 36px; }
.site-foot .logo b { color: #fff; }
.site-foot .logo small { color: #8FA0B8; }
.site-foot h4 { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: #8FA0B8; font-weight: 600; margin-bottom: 14px; }
.site-foot li { margin-bottom: 8px; font-size: 13px; }
.site-foot a:hover { color: #fff; }
.site-foot p { font-size: 13px; margin-top: 14px; max-width: 32ch; }
.foot-bar { border-top: 1px solid #1D2A40; padding-block: 18px; font-size: 12px; color: #8191A8; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; }

/* responsive */
@media (max-width: 980px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .cards.three { grid-template-columns: repeat(2, 1fr); }
  .values, .stats { grid-template-columns: repeat(2, 1fr); }
  .trio, .trio.four { grid-template-columns: repeat(2, 1fr); }
  .split, .split.wide-left { grid-template-columns: 1fr; gap: 36px; }
  .foot-in { grid-template-columns: 1fr 1fr; }
  .band-in { grid-template-columns: 1fr; }
  .hero-img { inset: 0; opacity: .45; -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 90%); mask-image: linear-gradient(90deg, transparent 0, #000 90%); }
  .hero.dark .hero-img { inset: 0; opacity: .5; }
  .menu-btn { display: block; margin-left: auto; }
  .head-tools { margin-left: 0; }
  .nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--line);
    flex-direction: column; gap: 0; padding: 8px max(20px, env(safe-area-inset-left, 0px)) 14px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav a[aria-current="page"]::after { display: none; }
}
@media (max-width: 600px) {
  .stats, .stats.three { grid-template-columns: 1fr; }
  .stat b { font-size: 24px; overflow-wrap: anywhere; }
  .cards, .cards.three, .cards.two { grid-template-columns: 1fr; }
  .trio, .trio.four { grid-template-columns: 1fr; }
  .form { grid-template-columns: 1fr; }
  .foot-in { grid-template-columns: 1fr; }
  .band-copy { padding: 32px 24px; }
  .map .tile { position: static; transform: none; width: auto; margin: 150px 14px 14px; }
  .map .pin { top: 110px; left: 50%; }
  .hero-in { padding-block: 52px 46px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }

/* animated hero carousel */
.hero.carousel { border-bottom: 1px solid var(--line); }
.slides { display: grid; }
.slide { grid-area: 1 / 1; position: relative; overflow: hidden; opacity: 0; visibility: hidden; transition: opacity .8s ease, visibility .8s; }
.slide.is-active { opacity: 1; visibility: visible; }
.carousel .hero-in { padding-block: 76px 112px; }
.carousel .hero h1, .carousel h1 { max-width: 14ch; }
.slide.is-active .hero-img { animation: drift 14s ease-out both; }
.slide.is-active .hero-in > * { animation: rise .8s cubic-bezier(.2,.7,.2,1) both; }
.slide.is-active .hero-in > :nth-child(2) { animation-delay: .08s; }
.slide.is-active .hero-in > :nth-child(3) { animation-delay: .18s; }
.slide.is-active .hero-in > :nth-child(4) { animation-delay: .28s; }
@keyframes drift { from { transform: scale(1.07) translateX(14px); } to { transform: scale(1) translateX(0); } }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.hero-ctrl { position: absolute; left: 0; right: 0; bottom: 26px; z-index: 3; }
.hero-ctrl .wrap { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.dotbtn { all: unset; cursor: pointer; display: grid; gap: 8px; width: 74px; font: 600 11px/1 var(--font); letter-spacing: .1em; color: var(--mute); }
.dotbtn .track { display: block; height: 2px; background: var(--line); position: relative; overflow: hidden; }
.dotbtn .bar { position: absolute; inset: 0; background: var(--red); transform: scaleX(0); transform-origin: left; }
.dotbtn.is-active { color: var(--ink); }
.dotbtn.is-active .bar { animation: fill 7s linear forwards; }
.hero.is-paused .dotbtn.is-active .bar, .hero.no-auto .dotbtn.is-active .bar { animation: none; transform: scaleX(1); }
@keyframes fill { to { transform: scaleX(1); } }
.dotbtn:focus-visible, .ctrl-btn:focus-visible { outline: 2px solid var(--red); outline-offset: 4px; }
.ctrl-btn { all: unset; cursor: pointer; font: 600 11px/1 var(--font); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); padding: 8px 10px; border: 1px solid var(--line); border-radius: 3px; background: var(--card); margin-left: 10px; }
.ctrl-btn:hover { border-color: var(--ink-2); }
@media (max-width: 600px) { .carousel .hero-in { padding-block: 52px 104px; } .dotbtn { width: 52px; } }
@media (prefers-reduced-motion: reduce) { .slide.is-active .hero-img, .slide.is-active .hero-in > *, .dotbtn.is-active .bar { animation: none !important; } .dotbtn.is-active .bar { transform: scaleX(1); } .slide { transition: none; } }

/* photo cutouts */
.hero { background: radial-gradient(60% 95% at 80% 55%, #EAF0F7 0%, rgba(234,240,247,0) 72%), var(--bg); }
.hero-art { position: absolute; z-index: 0; right: max(20px, calc((100% - var(--maxw)) / 2 + 20px)); top: 26px; bottom: 0; width: min(600px, 50%); display: flex; align-items: flex-end; justify-content: center; pointer-events: none; }
.hero-art img { width: 100%; height: auto; max-height: 100%; object-fit: contain; object-position: center bottom; filter: drop-shadow(0 20px 26px rgba(14, 26, 44, .16)); animation: float 9s ease-in-out infinite; }
.hero.compact .hero-art { top: 12px; width: min(470px, 44%); }
.carousel .hero-art { bottom: 84px; }
.slide.is-active .hero-art img { animation: artIn 1s cubic-bezier(.2, .7, .2, 1) both, float 9s 1s ease-in-out infinite; }
@keyframes float { 50% { transform: translateY(-8px); } }
@keyframes artIn { from { opacity: 0; transform: translateX(48px) scale(.97); } to { opacity: 1; transform: none; } }
.hero-in { z-index: 1; }
.card .thumb { background-size: contain; background-repeat: no-repeat; background-position: center; background-origin: content-box; padding: 12px; background-color: var(--bg-soft); }
.band-img { background-size: contain; background-repeat: no-repeat; background-position: center; background-color: #EDF1F6; background-origin: content-box; padding: 14px; }
@media (max-width: 980px) {
  .hero-art, .hero.compact .hero-art { width: 74%; right: -6%; top: auto; height: 62%; opacity: .26; }
  .carousel .hero-art { bottom: 84px; }
}
@media (prefers-reduced-motion: reduce) { .hero-art img, .slide.is-active .hero-art img { animation: none !important; } }