:root {
  --bg: #eef3fa;
  --surface: rgba(255, 255, 255, 0.94);
  --surface-strong: #ffffff;
  --text: #1b2638;
  --muted: #5b6b84;
  --line: #d7deea;
  --primary: #0f4ea8;
  --primary-dark: #0b2b64;
  --accent: #0a6c8e;
  --shadow: 0 16px 36px rgba(15, 31, 63, 0.07);
  --radius: 28px;
  --container: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans", "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, #eef3fa 0%, #e8edf6 100%);
  line-height: 1.62;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(215, 222, 234, 0.8);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 88px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow);
  flex-shrink: 0;
}

.brand-text strong {
  display: block;
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.2;
}

.brand-text small {
  display: block;
  color: var(--muted);
  margin-top: 4px;
  font-size: 0.95rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.site-nav a {
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 600;
  color: var(--text);
}

.site-nav a.active,
.site-nav a:hover {
  background: #fff;
  box-shadow: 0 6px 18px rgba(10, 24, 54, 0.08);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang-switch a {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-weight: 700;
  color: var(--muted);
  background: #fff;
}

.lang-switch a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-color: transparent;
}

.eyebrow,
.lang-eyebrow {
  margin: 0 0 12px;
  color: var(--primary);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.btn-secondary,
.btn-light {
  color: var(--primary-dark);
  background: #fff;
  border-color: var(--line);
}

.hero {
  padding: 72px 0 48px;
}

.hero-grid,
.brand-home-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 34px;
  align-items: center;
}

.hero h1,
.page-hero h1,
.brand-home-copy h1,
.lang-copy-panel h2 {
  margin: 0 0 18px;
  font-size: clamp(1.6rem, 3.33vw, 2.93rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text);
}

.hero-text,
.page-hero p,
.brand-home-copy p,
.lang-subtitle,
.lang-subtitle-ko {
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-card,
.panel-card,
.page-panel,
.info-card,
.placeholder-box,
.lang-card,
.service-card,
.benefit-card,
.contact-card,
.feature-item,
.why-card,
.note-card,
.brand-home-panel,
.lang-copy-panel,
.lang-visual-panel,
.brand-home-visual,
.brand-gallery-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card,
.placeholder-box,
.page-panel,
.lang-card,
.lang-copy-panel,
.lang-visual-panel,
.brand-home-panel,
.brand-home-visual {
  padding: 30px;
}

.card-label,
.placeholder-label {
  display: inline-block;
  background: #edf2ff;
  color: var(--primary);
  padding: 9px 14px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.92rem;
  margin-bottom: 18px;
}

.section {
  padding: 52px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.45), rgba(255, 255, 255, 0));
}

.section-heading {
  max-width: 860px;
  margin-bottom: 28px;
}

.section-heading p {
  color: var(--muted);
  margin: 0;
}

.benefit-grid,
.contact-grid,
.why-grid,
.brand-gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.services-grid,
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.benefit-card,
.service-card,
.contact-card,
.why-card,
.note-card,
.brand-gallery-card {
  padding: 24px;
}

.benefit-number {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: #eef3ff;
  color: var(--primary);
  font-weight: 800;
  margin-bottom: 12px;
}

.two-col,
.page-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
}

.feature-stack {
  display: grid;
  gap: 18px;
  margin-top: 22px;
}

.feature-item {
  padding: 22px;
}

.feature-item h3,
.service-card h3,
.benefit-card h3,
.contact-card h3,
.why-card h3,
.note-card h3,
.brand-gallery-card h3,
.brand-home-panel h3 {
  margin: 0 0 10px;
  font-size: 1.2rem;
}

.feature-item p,
.service-card p,
.benefit-card p,
.contact-card p,
.why-card p,
.note-card p,
.placeholder-box p,
.brand-gallery-card p,
.brand-home-panel p {
  margin: 0;
  color: var(--muted);
}

.page-hero {
  padding: 64px 0 24px;
}

.divider-list {
  border-top: 1px solid var(--line);
}

.divider-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.divider-item strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.02rem;
}

.cta-band {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
}

.cta-band .eyebrow {
  color: rgba(255, 255, 255, 0.8);
}

.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-footer {
  background: #071a3c;
  color: #fff;
  margin-top: 36px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 28px;
  padding: 44px 0 28px;
}

.footer-grid h3,
.footer-grid h4 {
  margin-top: 0;
  margin-bottom: 14px;
}

.footer-grid p,
.footer-grid li,
.footer-grid a {
  color: rgba(255, 255, 255, 0.86);
}

.footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-list li {
  margin-bottom: 10px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding: 18px 0 28px;
  color: rgba(255, 255, 255, 0.72);
}

/* Root landing page */
.lang-landing-page {
  background: linear-gradient(135deg, #eef3fa 0%, #e8edf6 100%);
}

.lang-landing-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 42px 20px;
}

.lang-landing-hero {
  width: min(1280px, 100%);
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 34px;
  align-items: stretch;
}

.lang-copy-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 9px;
}

.lang-brand-head {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  align-items: center;
  gap: 22px;
  margin-bottom: 20px;
}

.lang-logo-img {
  width: 168px;
  min-width: 168px;
  max-width: 168px;
  height: auto;
  object-fit: contain;
  padding: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid rgba(15, 78, 168, 0.12);
  border-radius: 18px;
  box-shadow: 0 8px 20px rgba(15, 31, 63, 0.06);
}

.lang-brand-text {
  min-width: 0;
  max-width: 560px;
}

.lang-brand-text h1 {
  margin: 0 0 8px;
  font-size: clamp(2.35rem, 3.8vw, 3.05rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 800;
  color: #102544;
}

.lang-brand-vi,
.lang-brand-ko {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.46;
  font-weight: 500;
}

.lang-brand-ko {
  margin-top: 6px;
}

.lang-subtitle-ko {
  margin-top: 8px;
}

.lang-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.lang-actions .btn {
  min-width: 170px;
}

.lang-note {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-top: 120px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.lang-visual-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
  justify-content: flex-start;
}

.lang-visual-main,
.lang-visual-card,
.brand-home-image,
.brand-gallery-card {
  margin: 0;
  overflow: hidden;
  border-radius: 22px;
  background: #fff;
  border: 1px solid var(--line);
}

.lang-visual-main img,
.lang-visual-card img,
.brand-home-image img,
.brand-gallery-card img {
  width: 100%;
  display: block;
  object-fit: cover;
}

.lang-visual-main figcaption,
.lang-visual-card figcaption,
.brand-home-image figcaption {
  padding: 14px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #1b2638;
  background: #fff;
}

.lang-visual-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
}

.logo-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.logo-card img {
  object-fit: contain;
  padding: 18px;
  background: #fff;
}

/* VI homepage upgrade */
.brand-home-hero {
  padding: 72px 0 36px;
}

.brand-home-copy .eyebrow {
  margin-bottom: 12px;
}

.brand-home-copy .button-row {
  margin-top: 26px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.brand-home-panel ul {
  margin: 16px 0 0;
  padding-left: 20px;
}

.brand-home-panel li {
  margin-bottom: 10px;
}

.brand-home-visual {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.brand-home-image figcaption {
  padding: 12px 14px;
}

.brand-gallery {
  padding: 20px 0 52px;
}

.brand-gallery-card img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.brand-gallery-card .brand-gallery-body {
  padding: 18px;
}

@media (max-width: 1024px) {
  .hero-grid,
  .brand-home-grid,
  .two-col,
  .page-layout,
  .grid-2,
  .benefit-grid,
  .contact-grid,
  .why-grid,
  .services-grid,
  .footer-grid,
  .cta-band-inner,
  .lang-landing-hero,
  .lang-visual-grid,
  .brand-gallery-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 0;
  }

  .site-nav {
    width: 100%;
  }

  .hero h1,
  .page-hero h1,
  .brand-home-copy h1,
  .lang-copy-panel h2 {
    font-size: 2.6rem;
  }

  .lang-copy-panel {
  padding-top: 0;
  transform: translateY(-35px);
}

  .lang-brand-head {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 18px;
    margin-bottom: 18px;
  }

  .lang-logo-img {
    width: 150px;
    min-width: 150px;
    max-width: 150px;
  }

  .lang-brand-text h1 {
    font-size: clamp(2.15rem, 4vw, 2.8rem);
  }

  .lang-brand-vi,
  .lang-brand-ko {
    font-size: 0.97rem;
  }
}

@media (max-width: 640px) {
  .lang-note {
    margin-top: 48px;
  }
}

  .hero,
  .page-hero,
  .section,
  .brand-home-hero,
  .brand-gallery {
    padding-top: 34px;
    padding-bottom: 34px;
  }

  .hero-card,
  .placeholder-box,
  .page-panel,
  .lang-card,
  .lang-copy-panel,
  .lang-visual-panel,
  .brand-home-panel,
  .brand-home-visual {
    padding: 20px;
  }

  .lang-copy-panel {
  padding-top: 0;
  transform: translateY(-35px);
}

  .lang-brand-head {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
  }

  .lang-logo-img {
    width: min(48vw, 150px);
    min-width: 0;
    max-width: none;
    padding: 10px;
    border-radius: 16px;
  }

  .lang-brand-text h1 {
    font-size: 2.05rem;
    line-height: 1.08;
  }

  .lang-brand-vi,
  .lang-brand-ko {
    font-size: 0.94rem;
    line-height: 1.44;
  }

  .lang-copy-panel h2,
  .brand-home-copy h1 {
    font-size: 2.1rem;
  }

  .button-row,
  .lang-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}