:root {
  --font-base: "Inter", "Noto Sans Thai", sans-serif;
  --color-bg: #f5f7fb;
  --color-surface: rgba(255, 255, 255, 0.92);
  --color-card: #ffffff;
  --color-ink: #101828;
  --color-muted: #475467;
  --color-accent: #2563eb;
  --color-accent-soft: rgba(37, 99, 235, 0.12);
  --color-accent-strong: rgba(37, 99, 235, 0.18);
  --color-border: rgba(15, 23, 42, 0.12);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --shadow-sm: 0 14px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 30px 60px rgba(15, 23, 42, 0.16);
  --max-width: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
  height: auto;
  border-radius: var(--radius-md);
}

.container {
  width: min(var(--max-width), 100% - 48px);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(245, 247, 251, 0.92);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
  color: inherit;
}

.brand-logo {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  object-fit: cover;
  box-shadow: var(--shadow-sm);
  background: #fff;
  padding: 6px;
}

.brand-text span:first-child {
  display: block;
  font-weight: 700;
  font-size: 1.1rem;
}

.tagline {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.site-nav {
  display: flex;
  align-items: center;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 18px;
  margin: 0;
  padding: 0;
}

.site-nav li {
  position: relative;
  display: flex;
  align-items: center;
}

.site-nav a,
.dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-ink);
  text-decoration: none;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, color 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus,
.dropdown-toggle:hover,
.dropdown-toggle:focus {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.site-nav a.is-active,
.site-nav a[aria-current="page"],
.dropdown-toggle.is-active {
  background: var(--color-accent);
  color: #ffffff;
}

.nav-dropdown {
  position: relative;
}

.dropdown-toggle {
  background: transparent;
  border: none;
  cursor: pointer;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 12px;
  display: none !important;
  flex-direction: column;
  gap: 6px;
  z-index: 20;
}

.dropdown-menu a {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
}

.dropdown-menu a:hover,
.dropdown-menu a:focus {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.nav-dropdown.open .dropdown-menu {
  display: flex !important;
}

.language-switcher {
  display: flex;
  gap: 8px;
  align-items: center;
}

.lang-btn {
  border: 1px solid rgba(37, 99, 235, 0.4);
  background: transparent;
  color: var(--color-accent);
  padding: 8px 18px;
  font-weight: 600;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border 0.2s ease;
}

.lang-btn.active,
.lang-btn:hover,
.lang-btn:focus {
  background: var(--color-accent);
  color: #fff;
  border-color: transparent;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
}

.hero-banner {
  padding: 120px 0 80px;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.25), transparent 55%),
    radial-gradient(circle at bottom right, rgba(14, 165, 233, 0.18), transparent 65%),
    var(--color-bg);
}

.hero-grid {
  display: grid;
  gap: 56px;
  align-items: start;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

@media (min-width: 1100px) {
  .hero-grid {
    grid-template-columns: minmax(340px, 480px) minmax(360px, 520px);
  }
}

.eyebrow {
  font-size: 0.75rem;
  color: var(--color-accent);
  margin: 0 0 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.lang.lang-en.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.lang.lang-th.eyebrow {
  letter-spacing: 0;
}

.hero-banner h1 {
  font-size: clamp(2.6rem, 4vw, 3.5rem);
  margin: 0 0 16px;
  line-height: 1.1;
}

.lead {
  font-size: 1.1rem;
  color: var(--color-muted);
  margin: 0 0 32px;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.primary-button,
.ghost-button {
  border-radius: 999px;
  padding: 14px 28px;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.primary-button {
  background: var(--color-accent);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.primary-button:hover,
.primary-button:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.ghost-button {
  color: var(--color-accent);
  border: 1px solid rgba(37, 99, 235, 0.4);
  background: var(--color-accent-soft);
}

.ghost-button:hover,
.ghost-button:focus {
  transform: translateY(-2px);
}

.hero-metrics {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.hero-metrics li {
  background: var(--color-card);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  min-width: 180px;
}

.metric-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
}

.metric-label {
  font-size: 0.95rem;
  color: var(--color-muted);
}

.hero-media figure {
  margin: 0 0 24px;
  background: var(--color-card);
  padding: 16px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.hero-media figcaption {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 12px;
}

.hero-stack {
  display: grid;
  gap: 18px;
}

.hero-card {
  background: var(--color-card);
  padding: 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.hero-card h3 {
  margin: 0 0 12px;
  font-size: 1.2rem;
}

.hero-card p {
  margin: 0 0 16px;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.hero-link {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
}

.hero-link:hover,
.hero-link:focus {
  text-decoration: underline;
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: rgba(37, 99, 235, 0.04);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}

.section-header h2 {
  font-size: 2rem;
  margin: 0 0 12px;
}

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

.card-grid {
  display: grid;
  gap: 32px;
  align-items: stretch;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.service-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15, 23, 42, 0.05);
}

.card-chip {
  position: absolute;
  top: 28px;
  right: 28px;
  background: var(--color-accent-strong);
  color: var(--color-accent);
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
}

.service-card h3 {
  margin: 0 0 12px;
  font-size: 1.5rem;
}

.service-card p {
  margin: 0 0 20px;
  color: var(--color-muted);
}

.service-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.platform-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.platform-card {
  background: rgba(37, 99, 235, 0.06);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  border: 1px solid rgba(37, 99, 235, 0.12);
}

.platform-card h4 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.platform-card p {
  margin: 0 0 12px;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.platform-link {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
}

.platform-link:hover,
.platform-link:focus {
  text-decoration: underline;
}

.about-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.about-card {
  background: var(--color-card);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.about-card h3 {
  margin: 0 0 12px;
  font-size: 1.3rem;
}

.about-card p {
  margin: 0;
  color: var(--color-muted);
}

.training-grid {
  display: grid;
  gap: 48px;
  align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.training-copy h2 {
  margin: 0 0 20px;
  font-size: 2rem;
}

.training-copy p {
  color: var(--color-muted);
  margin: 0 0 24px;
}

.training-figure {
  background: var(--color-card);
  padding: 16px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.training-figure figcaption {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 12px;
}

.contact-grid {
  display: grid;
  gap: 48px;
  align-items: start;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.contact-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15, 23, 42, 0.05);
  display: grid;
  gap: 24px;
}

.contact-card dl {
  margin: 0;
  display: grid;
  gap: 18px;
}

.contact-card dt {
  font-weight: 600;
  color: var(--color-ink);
}

.contact-card dd {
  margin: 4px 0 0;
  color: var(--color-muted);
}

.contact-card a {
  color: var(--color-accent);
  text-decoration: none;
}

.contact-card a:hover,
.contact-card a:focus {
  text-decoration: underline;
}

.contact-card .primary-button {
  color: #ffffff;
  text-decoration: none;
}

.contact-card .primary-button:hover,
.contact-card .primary-button:focus {
  color: #ffffff;
  text-decoration: none;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
  background: rgba(15, 23, 42, 0.04);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-logo {
  width: 52px;
  height: 52px;
  object-fit: contain;
  border-radius: 12px;
  background: #fff;
  padding: 5px;
  box-shadow: var(--shadow-sm);
}

.footer-brand p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-links a:hover,
.footer-links a:focus {
  color: var(--color-accent);
}

.footer-note {
  width: 100%;
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.lang {
  display: none;
}

body.lang-en .lang-en,
body.lang-th .lang-th {
  display: initial;
}

body.lang-en .lang-th,
body.lang-th .lang-en {
  display: none;
}

.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--delay, 0s);
}

.fade-up.in-view {
  opacity: 1;
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1080px) {
  .nav-toggle {
    display: block;
  }

  .site-nav ul {
    position: absolute;
    inset: 100% 0 auto auto;
    background: var(--color-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 16px;
    display: none;
    flex-direction: column;
    gap: 6px;
    margin: 12px 16px;
    min-width: 260px;
  }

  .site-nav ul.open {
    display: flex;
  }

  .dropdown-menu {
    position: static;
    display: none;
    box-shadow: none;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: var(--radius-sm);
    margin-top: 6px;
    gap: 4px;
  }

  .nav-dropdown.open .dropdown-menu {
    display: flex !important;
  }

  .language-switcher {
    margin-left: auto;
  }
}

@media (min-width: 1081px) {
  .has-pointer-hover .nav-dropdown:hover .dropdown-menu,
  .nav-dropdown:focus-within .dropdown-menu {
    display: flex !important;
  }
}

@media (max-width: 720px) {
  .hero-metrics {
    gap: 16px;
  }

  .service-card {
    padding: 26px;
  }

  .contact-card {
    padding: 28px;
  }

  .footer-grid {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-links {
    width: 100%;
  }

  .hero-banner {
    padding: 96px 0 64px;
  }
}