:root {
  --canvas: #f4efe6;
  --surface: #fffdf8;
  --ink: #211d1d;
  --ink-soft: #4d4541;
  --muted: #6f655f;
  --brand: #a23c2f;
  --brand-strong: #7f2c24;
  --brass: #c68a2d;
  --stage: #262124;
  --line: #ddd3c4;
  --focus: #126c87;
  --sans:
    "Be Vietnam Pro", ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Lora", Georgia, "Times New Roman", serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
}
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
::selection {
  background: var(--brand);
  color: var(--surface);
}
a {
  color: inherit;
  text-underline-offset: 5px;
}
button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}
a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 5px;
}
img {
  display: block;
  width: 100%;
  height: auto;
}
figure,
p,
h1,
h2,
h3 {
  margin: 0;
}
h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: -0.055em;
}
h1,
h2 {
  font-weight: 850;
}
h2 {
  font-size: clamp(2.5rem, 4.6vw, 4.35rem);
}
.wrap {
  width: min(1280px, calc(100% - 96px));
  margin-inline: auto;
}
.section-space {
  padding-block: 108px;
}
.eyebrow,
.section-meta,
.row-label,
.note-index,
.photo-side-label,
.image-caption-index,
.footer-place {
  font-size: 0.69rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.eyebrow {
  color: var(--brand);
}
.display-accent {
  font-family: var(--serif);
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.055em;
}
.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--brand);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  padding: 12px 18px;
  background: var(--surface);
  z-index: 10;
  transform: translateY(-160%);
  clip-path: inset(50%);
}
.skip-link:focus {
  transform: translateY(0);
  clip-path: none;
}
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 108px;
  border-bottom: 1px solid var(--line);
  gap: 24px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.9rem;
  font-weight: 850;
  letter-spacing: -0.065em;
  text-decoration: none;
  white-space: nowrap;
}
.brand-period {
  color: var(--brand);
  margin-left: -9px;
}
.brand-mark {
  display: flex;
  align-items: center;
  gap: 4px;
  width: 29px;
  height: 32px;
  margin-right: 3px;
}
.brand-mark i {
  display: block;
  width: 11px;
  height: 23px;
  background: var(--brand);
  transform: skewY(-22deg);
}
.brand-mark i + i {
  height: 32px;
  background: var(--brass);
}
nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
}
nav a:hover {
  color: var(--brand);
}
.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  white-space: nowrap;
}
.language-switcher a {
  justify-content: center;
  min-width: 44px;
}
.language-switcher a[aria-current="page"] {
  color: var(--brand);
  text-decoration: underline;
  text-decoration-thickness: 2px;
}
.nav-contact {
  gap: 20px;
  border: 1px solid var(--ink);
  padding: 6px 20px;
}
.nav-contact span {
  font-size: 1.2rem;
}
.hero {
  display: grid;
  grid-template-columns: 1.06fr 1fr;
  gap: 52px;
  padding-block: 64px 76px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(4.6rem, 6.8vw, 6.75rem);
  margin: 26px 0 26px;
  line-height: 1.035;
  letter-spacing: -0.065em;
}
.hero h1 .display-accent {
  color: var(--brand);
  font-size: 1.1em;
  line-height: 1.1;
}
.hero-intro {
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 30px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 38px;
  min-height: 54px;
  background: var(--brand);
  color: var(--surface);
  padding: 13px 24px;
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  transition:
    background 180ms,
    transform 180ms;
}
.button:hover {
  background: var(--brand-strong);
  transform: translateY(-2px);
}
.button span {
  font-size: 1.3rem;
}
.hero-footnote {
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 17px;
}
.hero-media {
  position: relative;
  padding-bottom: 24px;
}
.hero-photo {
  position: relative;
  background: var(--stage);
  overflow: hidden;
}
.hero-photo img {
  aspect-ratio: 5/6;
  object-fit: cover;
  object-position: 50% center;
}
.photo-side-label {
  position: absolute;
  right: 18px;
  top: 24px;
  writing-mode: vertical-rl;
  color: var(--surface);
  font-size: 0.61rem;
  text-shadow: 0 1px 4px var(--ink);
}
.photo-note {
  position: absolute;
  bottom: 64px;
  left: -28px;
  background: var(--canvas);
  padding: 20px 62px 20px 23px;
  border-left: 3px solid var(--brass);
}
.note-index {
  font-size: 0.55rem;
  color: var(--muted);
}
.photo-note p {
  font-size: 0.84rem;
  line-height: 1.65;
  margin-top: 8px;
}
.note-arrow {
  position: absolute;
  right: 19px;
  top: 25px;
  font-size: 1.7rem;
  color: var(--brand);
}
.hero-media figcaption {
  position: absolute;
  bottom: 0;
  right: 0;
  font-size: 0.59rem;
  color: var(--muted);
}
.editorial-band {
  border-block: 1px solid var(--line);
  padding-block: 22px;
}
.editorial-band .wrap {
  display: flex;
  align-items: center;
  gap: 34px;
}
.editorial-band span {
  font-weight: 750;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}
.editorial-band .band-cross {
  font-weight: 400;
  color: var(--brand);
  font-size: 1.35rem;
}
.editorial-band .band-caption {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted);
}
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 48px;
}
.section-meta {
  color: var(--muted);
  font-size: 0.58rem;
}
.vision-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 94px;
  align-items: center;
}
.vision-image {
  position: relative;
  padding-right: 28px;
}
.vision-image img {
  aspect-ratio: 6/5;
  object-fit: cover;
  object-position: 50% center;
}
.vision-image figcaption {
  font-size: 0.68rem;
  color: var(--muted);
  margin-top: 13px;
}
.image-caption-index {
  position: absolute;
  right: 0;
  top: 0;
  writing-mode: vertical-rl;
  font-size: 0.57rem;
}
.vision-copy h2 {
  margin-bottom: 28px;
}
.vision-copy .display-accent {
  color: var(--brand);
}
.vision-copy > p {
  font-size: 0.91rem;
  color: var(--ink-soft);
  margin-top: 17px;
  max-width: 430px;
}
.vision-principle {
  display: flex;
  gap: 18px;
  border-top: 1px solid var(--line);
  margin-top: 28px;
  padding-top: 22px;
}
.vision-principle > span {
  font-size: 1.8rem;
  color: var(--brand);
  line-height: 1.2;
}
.vision-principle p {
  font-size: 0.85rem;
}
.product {
  background: var(--surface);
}
.product-intro {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 90px;
  align-items: end;
  margin-bottom: 56px;
}
.product-intro h2 {
  font-size: clamp(2.5rem, 4.2vw, 4rem);
}
.product-intro > p {
  max-width: 430px;
  font-size: 0.91rem;
  color: var(--ink-soft);
}
.product-rows {
  border-top: 1px solid var(--line);
}
.product-row {
  display: grid;
  grid-template-columns: 52px 1.2fr 1fr 40px;
  gap: 28px;
  align-items: center;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}
.row-number {
  color: var(--brand);
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.35rem;
  align-self: start;
}
.row-label {
  font-size: 0.59rem;
  color: var(--muted);
  margin-bottom: 9px;
}
.product-row h3 {
  font-size: 1.55rem;
  letter-spacing: -0.035em;
  line-height: 1.3;
}
.product-row > p {
  font-size: 0.87rem;
  color: var(--ink-soft);
  max-width: 390px;
}
.row-arrow {
  font-size: 1.65rem;
  color: var(--brand);
  text-align: right;
}
.development-note {
  font-size: 0.73rem;
  color: var(--muted);
  margin-top: 24px;
}
.product-intro.technology-vision {
  align-items: start;
  margin-top: 44px;
  margin-bottom: 0;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}
.technology-vision .eyebrow {
  font-size: 0.59rem;
  margin-bottom: 16px;
}
.technology-vision h3 {
  font-size: clamp(1.7rem, 2.6vw, 2.25rem);
  line-height: 1.2;
}
.technology-copy p {
  font-size: 0.87rem;
  color: var(--ink-soft);
  max-width: 430px;
}
.technology-copy .technology-note {
  margin-top: 16px;
  font-size: 0.77rem;
  color: var(--muted);
}
.journey {
  background: var(--stage);
  color: var(--canvas);
  padding-block: 96px;
}
.journey-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 110px;
  align-items: center;
}
.journey .eyebrow {
  color: var(--brass);
}
.journey h2 {
  margin: 28px 0;
  font-size: clamp(2.5rem, 4.3vw, 4.1rem);
}
.journey .display-accent {
  color: var(--brass);
}
.journey-copy > p:not(.eyebrow) {
  font-size: 0.9rem;
  max-width: 440px;
  margin-top: 20px;
  opacity: 0.87;
}
.journey-location {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--muted);
}
.location-mark {
  font-size: 2rem;
  color: var(--brass);
}
.journey-location strong,
.journey-location span:not(.location-mark) {
  display: block;
  font-size: 0.78rem;
}
.journey-location div > span {
  opacity: 0.7;
  margin-top: 3px;
}
.journey-media img {
  aspect-ratio: 3/2;
  object-fit: cover;
  object-position: 50% center;
}
.journey-media figcaption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  margin-top: 15px;
}
.journey-media figcaption span {
  letter-spacing: 0;
  opacity: 0.7;
}
.contact {
  background: var(--brand);
  color: var(--surface);
}
.contact .eyebrow,
.contact .section-meta {
  color: var(--canvas);
}
.contact .section-heading {
  margin-bottom: 40px;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 88px;
  align-items: center;
}
.contact h2 {
  font-size: clamp(2.75rem, 5vw, 4.75rem);
}
.contact-copy > p {
  font-size: 0.95rem;
  max-width: 400px;
}
.contact-pending {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--canvas);
  font-size: 0.85rem;
  max-width: 400px;
}
.contact-copy .contact-status {
  margin-top: 25px;
  font-size: 0.7rem;
  opacity: 0.85;
}
.email-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 54px;
  border-bottom: 1px solid var(--canvas);
  margin-top: 25px;
  padding-block: 12px;
  font-size: clamp(1rem, 1.8vw, 1.5rem);
  font-weight: 600;
  word-break: break-word;
  text-decoration: none;
}
.email-link:hover {
  text-decoration: underline;
}
.email-link:focus-visible {
  outline-color: var(--surface);
}
.email-link span {
  font-size: 1.6rem;
}
.site-footer {
  padding-block: 44px 24px;
}
.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding-bottom: 35px;
}
.footer-top p {
  color: var(--ink-soft);
  font-size: 0.77rem;
  margin-right: auto;
  margin-left: 48px;
}
.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 24px;
  text-decoration: none;
  font-size: 0.78rem;
  min-height: 44px;
}
.back-to-top span {
  font-size: 1.3rem;
  color: var(--brand);
}
.footer-bottom {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: 20px;
  font-size: 0.67rem;
  color: var(--muted);
}
.footer-bottom > a,
.photo-credits summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  margin-top: -11px;
}
.photo-credits summary {
  cursor: pointer;
  list-style: revert;
}
.photo-credits div {
  max-width: 330px;
  padding-bottom: 20px;
}
.photo-credits a {
  display: block;
  padding-block: 7px;
}
.photo-credits p {
  margin-bottom: 10px;
}
.footer-place {
  margin-left: auto;
  font-size: 0.57rem;
}
.hero-copy,
.hero-media {
  animation: arrival 600ms ease-out both;
}
.hero-media {
  animation-delay: 100ms;
}
@keyframes arrival {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (min-width: 1441px) {
  .hero h1 {
    font-size: 6.75rem;
  }
}
@media (max-width: 1100px) {
  .wrap {
    width: calc(100% - 64px);
  }
  .hero {
    gap: 32px;
  }
  .hero h1 {
    font-size: clamp(4rem, 7vw, 5rem);
  }
  .vision-grid,
  .journey-grid {
    gap: 56px;
  }
  .product-intro,
  .contact-grid {
    gap: 48px;
  }
  .product-row {
    grid-template-columns: 32px 1.1fr 1fr 24px;
    gap: 20px;
  }
  .product-row h3 {
    font-size: 1.3rem;
  }
  .section-space {
    padding-block: 80px;
  }
  .hero-intro {
    font-size: 0.91rem;
  }
  .desktop-break {
    display: none;
  }
  .photo-note {
    left: -16px;
  }
}
@media (max-width: 899px) {
  .wrap {
    width: calc(100% - 48px);
  }
  .site-header {
    min-height: 88px;
  }
  nav {
    gap: 24px;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-block: 44px 48px;
    gap: 34px;
  }
  .hero h1 {
    font-size: clamp(4rem, 10vw, 6rem);
    margin-block: 24px;
  }
  .hero-intro {
    max-width: 470px;
    font-size: 1rem;
  }
  .hero-media {
    max-width: 600px;
    width: 100%;
    justify-self: end;
    margin-top: 10px;
  }
  .hero-photo img {
    aspect-ratio: 6/5;
    object-position: 50% 25%;
  }
  .photo-note {
    left: 16px;
    bottom: 48px;
  }
  .hero-media figcaption {
    font-size: 0.6rem;
  }
  .editorial-band .wrap {
    gap: 24px;
  }
  .editorial-band .band-caption {
    display: none;
  }
  .vision-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .vision-copy {
    grid-row: 1;
  }
  .vision-copy h2 {
    font-size: clamp(2.75rem, 6vw, 4rem);
  }
  .vision-copy > p {
    max-width: 620px;
  }
  .vision-image {
    max-width: 650px;
    width: 100%;
  }
  .product-intro {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 36px;
  }
  .product-intro > p {
    max-width: 600px;
  }
  .product-row {
    grid-template-columns: 30px 1fr 26px;
    gap: 18px;
    padding-block: 26px;
  }
  .product-row > p {
    grid-column: 2;
    max-width: 600px;
  }
  .row-arrow {
    grid-column: 3;
    grid-row: 1;
  }
  .row-number {
    grid-row: 1/3;
  }
  .product-row h3 {
    font-size: 1.5rem;
  }
  .journey-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .journey-copy > p:not(.eyebrow) {
    max-width: 600px;
  }
  .journey-media img {
    aspect-ratio: 3/2;
    object-position: 50% center;
  }
  .journey-media {
    max-width: 650px;
    width: 100%;
  }
  .journey h2 {
    font-size: clamp(2.75rem, 6vw, 4rem);
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .contact h2 {
    font-size: clamp(3rem, 7vw, 4.75rem);
  }
  .contact-copy > p,
  .contact-pending {
    max-width: 600px;
  }
  .email-link {
    max-width: 600px;
  }
  .footer-top p {
    margin-left: 20px;
  }
  .section-space,
  .journey {
    padding-block: 64px;
  }
}
@media (max-width: 540px) {
  .wrap {
    width: calc(100% - 40px);
  }
  .site-header {
    gap: 12px;
    min-height: 82px;
    flex-wrap: wrap;
    padding-block: 14px;
  }
  .wordmark {
    font-size: 1.55rem;
    gap: 7px;
  }
  .brand-mark {
    width: 23px;
    gap: 3px;
    margin-right: 0;
  }
  .brand-mark i {
    width: 9px;
    height: 20px;
  }
  .brand-mark i + i {
    height: 27px;
  }
  .brand-period {
    margin-left: -6px;
  }
  nav {
    gap: 13px;
    width: 100%;
    justify-content: space-between;
  }
  nav a {
    font-size: 0.68rem;
  }
  nav a[href="#hanh-trinh"] {
    display: none;
  }
  .nav-contact {
    padding: 4px 10px;
    gap: 7px;
  }
  .nav-contact span {
    font-size: 1rem;
  }
  .hero {
    padding-top: 34px;
    gap: 26px;
  }
  .hero .eyebrow {
    font-size: 0.58rem;
    letter-spacing: 0.11em;
  }
  .hero h1 {
    font-size: clamp(2.9rem, 12vw, 4.3rem);
  }
  .hero-intro {
    font-size: 0.91rem;
  }
  .button {
    font-size: 0.8rem;
    padding-inline: 19px;
    gap: 28px;
    min-height: 52px;
  }
  .hero-footnote {
    font-size: 0.66rem;
  }
  .hero-photo img {
    aspect-ratio: 5/6;
    object-position: 51% center;
  }
  .photo-note {
    left: -8px;
    padding: 15px 48px 15px 18px;
    bottom: 50px;
  }
  .photo-note p {
    font-size: 0.74rem;
  }
  .note-arrow {
    right: 14px;
    font-size: 1.4rem;
  }
  .hero-media figcaption {
    font-size: 0.5rem;
  }
  .photo-side-label {
    font-size: 0.52rem;
    right: 12px;
  }
  .editorial-band {
    padding-block: 16px;
  }
  .editorial-band .wrap {
    justify-content: space-between;
    gap: 10px;
  }
  .editorial-band span {
    font-size: 0.59rem;
    letter-spacing: 0.06em;
  }
  .editorial-band .band-cross {
    font-size: 1rem;
  }
  .section-heading {
    margin-bottom: 32px;
  }
  .section-meta {
    display: none;
  }
  .eyebrow {
    font-size: 0.6rem;
    letter-spacing: 0.11em;
  }
  .vision-copy h2 {
    font-size: clamp(2.15rem, 10.5vw, 2.8rem);
  }
  .vision-copy > p {
    font-size: 0.87rem;
  }
  .vision-grid {
    gap: 32px;
  }
  .vision-image {
    padding-right: 19px;
  }
  .image-caption-index {
    font-size: 0.48rem;
  }
  .vision-image figcaption {
    font-size: 0.6rem;
  }
  .product-intro h2 {
    font-size: clamp(2.15rem, 10.5vw, 2.65rem);
  }
  .product-intro > p {
    font-size: 0.86rem;
  }
  .product-row {
    grid-template-columns: 23px 1fr 18px;
    gap: 12px;
  }
  .product-row h3 {
    font-size: 1.23rem;
  }
  .product-row > p {
    font-size: 0.82rem;
  }
  .row-label {
    font-size: 0.51rem;
    letter-spacing: 0.1em;
  }
  .row-number {
    font-size: 1.15rem;
  }
  .row-arrow {
    font-size: 1.35rem;
  }
  .journey h2 {
    font-size: clamp(2.15rem, 10.5vw, 2.65rem);
  }
  .journey-copy > p:not(.eyebrow) {
    font-size: 0.86rem;
  }
  .journey-media figcaption {
    font-size: 0.48rem;
    gap: 7px;
  }
  .contact h2 {
    font-size: clamp(2rem, 9.4vw, 2.75rem);
  }
  .contact-copy > p {
    font-size: 0.89rem;
  }
  .contact-pending {
    font-size: 0.8rem;
  }
  .footer-top {
    flex-wrap: wrap;
    gap: 18px;
    padding-bottom: 26px;
  }
  .footer-top p {
    margin: 0;
    flex-basis: 100%;
    order: 3;
    font-size: 0.73rem;
  }
  .back-to-top {
    margin-left: auto;
    font-size: 0.69rem;
    gap: 12px;
  }
  .footer-bottom {
    gap: 16px 25px;
    font-size: 0.62rem;
  }
  .footer-place {
    flex-basis: 100%;
    margin-left: 0;
  }
  .section-space,
  .journey {
    padding-block: 52px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}