/* =============================================================================
   9. SITE — HEADER & NAVIGATION
   Viewport-anchored header with a CSS-only mobile menu (checkbox hack).
   Nav links and hamburger switch at 1100px; the tagline switches separately
   at 1250px, exactly as approved.
   ============================================================================= */
/* Floating nav + CSS-only mobile menu. Depends on: tokens.css. */
.site-header {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  z-index: 1000 !important;
  width: 100% !important;
  max-width: 100% !important;
  margin: 0 !important;
  border-radius: 0 !important;
  border: none !important;
  border-bottom: 1px solid color-mix(in oklch, var(--color-border), transparent 18%) !important;
  background: color-mix(in oklch, var(--color-glass-strong), transparent 16%) !important;
  backdrop-filter: blur(16px) saturate(130%) !important;
  -webkit-backdrop-filter: blur(16px) saturate(130%) !important;
  box-shadow: 0 4px 20px color-mix(in oklch, var(--color-shadow), transparent 92%) !important;
  transform: none !important;
}

body {
  padding-top: 65px !important;
}

/* Ensure site-header--hidden is disabled */
.site-header.site-header--hidden {
  transform: none !important;
}

@media (prefers-reduced-motion: reduce) {
  .site-header {
    transition-duration: 0.01ms;
  }
}

.site-header__nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  min-height: 64px;
  max-width: calc(var(--container-max-width) + 88px);
  margin-inline: auto;
  padding: 0.55rem 1.5rem;
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  flex-shrink: 0;
}

.site-brand__mark {
  display: block;
  flex: 0 0 auto;
  object-fit: contain;
}

.site-header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: var(--lh-logo);
}

/* Gradient text instead of a flat fill — same accent → accent-strong
   gradient already used on the primary button and the AI assistant
   launcher, so the wordmark reads as premium without introducing a new
   color. Reused by the footer logo (same class, see index.html). */
.site-header__wordmark {
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: 1.15rem;
  letter-spacing: var(--ls-wordmark);
  background: linear-gradient(135deg, var(--color-accent-strong) 0%, var(--color-accent) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.site-header__tagline {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  margin-top: 1px;
  white-space: nowrap;
  opacity: 0.85;
}

.site-header__links {
  display: none;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.5rem;
  background: color-mix(in oklch, var(--color-glass-strong), transparent 60%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid color-mix(in oklch, var(--color-border), transparent 40%);
  border-radius: var(--radius-pill);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.site-header__links a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 36px;
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.01em;
  transition: color var(--transition-base), background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.site-header__links a::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent-strong);
  opacity: 0;
  transform: scale(0);
  transition: transform 0.25s var(--ease-out-expo), opacity 0.25s ease;
}

.site-header__links a::after {
  content: '';
  position: absolute;
  right: 0.8rem;
  bottom: 0.25rem;
  left: 0.8rem;
  height: 1.5px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-accent), var(--color-glow));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

.site-header__links a:hover,
.site-header__links a:focus-visible {
  color: var(--color-text-primary);
  background: color-mix(in oklch, var(--color-accent-soft), transparent 25%);
  box-shadow: 0 4px 12px color-mix(in oklch, var(--color-accent), transparent 85%);
  transform: translateY(-1px);
}

.site-header__links a:hover::before,
.site-header__links a:focus-visible::before,
.site-header__links a.is-active::before {
  opacity: 1;
  transform: scale(1);
}

.site-header__links a:hover::after,
.site-header__links a:focus-visible::after,
.site-header__links a.is-active::after {
  transform: scaleX(1);
}

.site-header__links a.is-active {
  color: var(--color-text-primary);
  background: color-mix(in oklch, var(--color-accent-soft), var(--color-glass-strong) 40%);
  border: 1px solid color-mix(in oklch, var(--color-accent-border), transparent 50%);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.mobile-menu-toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.site-header__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 38px;
  height: 38px;
  border: 1px solid color-mix(in oklch, var(--color-border), transparent 12%);
  border-radius: 50%;
  background: linear-gradient(145deg, var(--color-glass-strong), color-mix(in oklch, var(--color-accent-soft), transparent 56%));
  box-shadow: 0 1px 0 oklch(100% 0 0 / 0.26) inset;
  cursor: pointer;
  transition: transform 0.3s var(--ease-out-expo), border-color var(--transition-base), box-shadow 0.3s var(--ease-out-expo);
}

.site-header__hamburger:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent-border);
  box-shadow: 0 8px 18px color-mix(in oklch, var(--color-accent), transparent 82%), 0 1px 0 oklch(100% 0 0 / 0.3) inset;
}

.site-header__hamburger-bar {
  width: 14px;
  height: 1.5px;
  background: var(--color-text-primary);
  margin-inline: auto;
}

.mobile-menu-toggle:focus-visible ~ .container .site-header__hamburger {
  outline: 2px solid var(--color-accent-strong);
  outline-offset: 2px;
}

.mobile-menu-panel {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.65rem;
  max-height: 80vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--color-glass-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-menu);
  padding: var(--space-4) var(--space-container-x) var(--space-6);
}

.mobile-menu-panel ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-menu-panel a {
  display: block;
  color: var(--color-text-primary);
  text-decoration: none;
  font-size: var(--text-base);
  font-weight: var(--fw-medium);
}

.mobile-menu-toggle:checked ~ .mobile-menu-panel {
  display: block;
}

@media (max-width: 520px) {
  .site-header {
    top: 8px;
    width: calc(100% - 20px);
  }

  .site-header__nav {
    min-height: 56px;
    padding-inline: 0.75rem;
  }

  .site-header__contact {
    display: none;
  }
}

@media (min-width: 1100px) {
  .site-header__links {
    display: flex;
  }

  .site-header__hamburger,
  .mobile-menu-panel {
    display: none;
  }
}

@media (min-width: 1250px) {
  .site-header__tagline {
    display: block;
  }
}

/* Dark mode: a restrained glass shell at rest, with stronger separation once
   content moves underneath it. These overrides intentionally stay local to
   navigation so the light header remains unchanged. */
:root[data-theme="dark"] .site-header {
  background: color-mix(in oklch, var(--color-bg-main), transparent 48%);
  border-color: color-mix(in oklch, var(--color-glow), transparent 82%);
  backdrop-filter: blur(14px) saturate(135%);
  -webkit-backdrop-filter: blur(14px) saturate(135%);
  box-shadow: 0 1px 0 oklch(100% 0 0 / 0.045) inset;
}

:root[data-theme="dark"] .site-header__wordmark {
  background-image: linear-gradient(135deg, var(--color-accent-strong), var(--color-glow));
}

:root[data-theme="dark"] .site-header__tagline,
:root[data-theme="dark"] .site-header__links a {
  color: var(--color-text-secondary);
}

:root[data-theme="dark"] .site-header__links a:hover,
:root[data-theme="dark"] .site-header__links a:focus-visible {
  color: var(--color-text-primary);
  background: color-mix(in oklch, var(--color-accent-soft), transparent 18%);
}

:root[data-theme="dark"] .site-header__links a.is-active {
  color: var(--color-text-primary);
  background: color-mix(in oklch, var(--color-accent-soft), var(--color-glass-medium) 48%);
  box-shadow: 0 0 0 1px var(--color-accent-border) inset;
}

:root[data-theme="dark"] .site-header__links a:focus-visible,
:root[data-theme="dark"] .mobile-menu-panel a:focus-visible {
  outline: 2px solid var(--color-glow);
  outline-offset: 3px;
}

/* ═══════════════════════════════════════════════════════════════════════
   DROPDOWN NAVIGATION (Isolated Floating Overlays)
═══════════════════════════════════════════════════════════════════════ */
.site-header__dropdown-item {
  position: relative;
}

/* Independent Product Engineering mega menu — intentionally unrelated to #services. */
.legacy-services-navigation { display: none !important; }
.legacy-data-ai-navigation { display: none !important; }
.legacy-enterprise-practices-navigation { display: none !important; }
.product-engineering-nav__trigger,
.data-ai-nav__trigger,
.enterprise-practices-nav__trigger,
.industries-nav__trigger {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 36px;
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: color var(--transition-base), background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.product-engineering-nav__trigger:hover,
.data-ai-nav__trigger:hover,
.enterprise-practices-nav__trigger:hover,
.industries-nav__trigger:hover,
.product-engineering-nav.is-open .product-engineering-nav__trigger,
.data-ai-nav.is-open .data-ai-nav__trigger,
.enterprise-practices-nav.is-open .enterprise-practices-nav__trigger,
.industries-nav.is-open .industries-nav__trigger {
  color: var(--color-text-primary);
  background: color-mix(in oklch, var(--color-accent-soft), transparent 25%);
  box-shadow: 0 4px 12px color-mix(in oklch, var(--color-accent), transparent 85%);
  transform: translateY(-1px);
}

.product-engineering-nav.is-open .site-header__dropdown-chevron,
.data-ai-nav.is-open .site-header__dropdown-chevron,
.enterprise-practices-nav.is-open .site-header__dropdown-chevron,
.industries-nav.is-open .site-header__dropdown-chevron {
  transform: rotate(180deg);
}
.product-engineering-menu { position: absolute; top: calc(100% + 14px); left: 50%; width: min(80vw, 1180px); min-height: 480px; max-width: calc(100vw - 2rem); display: grid; grid-template-columns: 33% 67%; opacity: 0; visibility: hidden; pointer-events: none; transform: translateX(-50%) translateY(10px); overflow: hidden; z-index: 1001; background: var(--color-bg-primary); border: 1px solid color-mix(in oklch, var(--color-border), white 12%); border-radius: var(--radius-xl); box-shadow: 0 28px 70px color-mix(in oklch, var(--color-shadow), transparent 22%); transition: opacity .22s var(--ease-out-expo), transform .22s var(--ease-out-expo), visibility .22s; }
.data-ai-menu { position: absolute; top: calc(100% + 14px); left: 50%; width: min(80vw, 1180px); min-height: 480px; max-width: calc(100vw - 2rem); display: grid; grid-template-columns: 33% 67%; opacity: 0; visibility: hidden; pointer-events: none; transform: translateX(-50%) translateY(10px); overflow: hidden; z-index: 1001; background: var(--color-bg-primary); border: 1px solid color-mix(in oklch, var(--color-border), white 12%); border-radius: var(--radius-xl); box-shadow: 0 28px 70px color-mix(in oklch, var(--color-shadow), transparent 22%); transition: opacity .22s var(--ease-out-expo), transform .22s var(--ease-out-expo), visibility .22s; }
.enterprise-practices-menu { position:absolute; top:calc(100% + 14px); left:50%; width:min(80vw,1180px); min-height:480px; max-width:calc(100vw - 2rem); display:grid; grid-template-columns:33% 67%; opacity:0; visibility:hidden; pointer-events:none; transform:translateX(-50%) translateY(10px); overflow:hidden; z-index:1001; background:var(--color-bg-primary); border:1px solid color-mix(in oklch,var(--color-border),white 12%); border-radius:var(--radius-xl); box-shadow:0 28px 70px color-mix(in oklch,var(--color-shadow),transparent 22%); transition:opacity .22s var(--ease-out-expo),transform .22s var(--ease-out-expo),visibility .22s; }
.product-engineering-nav.is-open .product-engineering-menu,
.product-engineering-nav:hover .product-engineering-menu,
.data-ai-nav.is-open .data-ai-menu,
.data-ai-nav:hover .data-ai-menu,
.enterprise-practices-nav.is-open .enterprise-practices-menu,
.enterprise-practices-nav:hover .enterprise-practices-menu { opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0); }
/* ═══════════════════════════════════════════════════════════════════════
   AZILEN-MATCHED 3x2 CARD GRID (Industries Dropdown)
═══════════════════════════════════════════════════════════════════════ */
.industries-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: min(980px, calc(100vw - 2rem));
  padding: 1.5rem;
  display: block;
  min-height: auto;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 1001;
  background: var(--color-bg-primary, #ffffff);
  border: 1px solid color-mix(in oklch, var(--color-border), white 12%);
  border-radius: 20px;
  box-shadow: 0 28px 75px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.08) inset;
  transition: opacity 0.22s var(--ease-out-expo), transform 0.22s var(--ease-out-expo), visibility 0.22s;
}

.industries-nav.is-open .industries-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

:root[data-theme="dark"] .industries-menu {
  background: color-mix(in oklch, var(--color-bg-primary), #071126 24%);
  border-color: color-mix(in oklch, var(--color-glow), transparent 72%);
  box-shadow: 0 28px 75px rgba(0, 0, 0, 0.85);
}

.industries-menu__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem 1.5rem;
}

.industries-menu__card {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.75rem;
  border-radius: 12px;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}

.industries-menu__card:hover {
  background: color-mix(in oklch, var(--color-accent-soft), transparent 25%);
  transform: translateY(-2px);
}

.industries-menu__card-img {
  width: 105px;
  height: 60px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
}

.industries-menu__card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.industries-menu__card:hover .industries-menu__card-img img {
  transform: scale(1.06);
}

.industries-menu__card-content {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.industries-menu__card-content h4 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 0.925rem;
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
  line-height: 1.2;
}

.industries-menu__card-content p {
  margin: 0;
  font-size: 0.725rem;
  color: var(--color-text-tertiary);
  line-height: 1.35;
}

.industries-menu__card:hover .industries-menu__card-content h4 {
  color: var(--color-accent-strong);
}

@media (max-width: 900px) {
  .industries-menu__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .industries-menu__grid {
    grid-template-columns: 1fr;
  }
}.industries-menu__cta { color:var(--color-accent-strong); font-weight:var(--fw-semibold); }.industries-menu__signature { margin-top:auto !important; padding-top:1rem; border-top:1px solid var(--color-border); }.industries-menu__copy.is-updating { opacity:.45; transition:opacity .16s ease; }
.product-engineering-menu__rail { display: flex; flex-direction: column; gap: .55rem; padding: 2rem 1.5rem; background: color-mix(in oklch, var(--color-bg-secondary), var(--color-glass-strong) 85%); border-right: 1px solid color-mix(in oklch, var(--color-border), transparent 35%); position: relative; }
.product-engineering-menu__eyebrow { margin: 0 0 .65rem .75rem; color: var(--color-text-tertiary); font-family: var(--font-mono); font-size: .65rem; letter-spacing: var(--ls-label-md); text-transform: uppercase; }
.product-engineering-menu__category { min-height: 48px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .78rem 1rem; color: var(--color-text-secondary); font: inherit; font-size: .9rem; font-weight: var(--fw-medium); text-align: left; background: transparent; border: 1px solid transparent; border-radius: var(--radius-md); cursor: pointer; transition: background var(--transition-base), color var(--transition-base), transform var(--transition-base); }
.product-engineering-menu__category span { opacity: 0; color: var(--color-accent-strong); transform: translateX(-4px); transition: inherit; font-weight: bold; }
.product-engineering-menu__category:hover, .product-engineering-menu__category.is-active { color: var(--color-accent-strong); background: var(--color-bg-primary); border-color: color-mix(in oklch, var(--color-border), transparent 25%); box-shadow: 0 8px 20px color-mix(in oklch, var(--color-shadow), transparent 88%); }
.product-engineering-menu__category.is-active span { opacity: 1; transform: translateX(0); }
.product-engineering-menu__content { display: flex; flex-direction: column; min-width: 0; padding: 2.5rem 3rem 1.5rem; }
.product-engineering-menu__panel { display: none; flex: 1; }
.product-engineering-menu__panel.is-active { display: block; }
.product-engineering-menu__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.2rem 2.8rem; }
.product-engineering-menu__grid a { display: block; color: inherit; text-decoration: none; }
.product-engineering-menu__grid strong { display: block; margin-bottom: .4rem; color: var(--color-text-primary); font-size: 1rem; font-weight: var(--fw-semibold); line-height: 1.25; }
.product-engineering-menu__grid span { display: block; max-width: 28ch; color: var(--color-text-tertiary); font-size: .83rem; line-height: 1.5; }
.product-engineering-menu__grid a:hover strong { color: var(--color-accent-strong); }
.product-engineering-menu__signature { margin: auto 0 0; padding-top: 1.25rem; border-top: 1px solid var(--color-border); color: var(--color-accent-strong); font-size: .95rem; font-style: italic; text-align: center; font-family: var(--font-heading), Georgia, serif; }

.data-ai-menu__rail { display:flex; flex-direction:column; gap:.55rem; padding:2rem 1.5rem; background:color-mix(in oklch,var(--color-bg-secondary),var(--color-glass-strong) 85%); border-right:1px solid color-mix(in oklch,var(--color-border),transparent 35%); position:relative; }
.data-ai-menu__eyebrow { margin:0 0 .65rem .75rem; color:var(--color-text-tertiary); font-family:var(--font-mono); font-size:.65rem; letter-spacing:var(--ls-label-md); text-transform:uppercase; }
.data-ai-menu__category { min-height:48px; display:flex; align-items:center; justify-content:space-between; gap:1rem; padding:.78rem 1rem; color:var(--color-text-secondary); font:inherit; font-size:.9rem; font-weight:var(--fw-medium); text-align:left; background:transparent; border:1px solid transparent; border-radius:var(--radius-md); cursor:pointer; }
.data-ai-menu__category span { opacity:0; color:var(--color-accent-strong); font-weight:bold; }
.data-ai-menu__category:hover,.data-ai-menu__category.is-active { color:var(--color-accent-strong); background:var(--color-bg-primary); border-color:color-mix(in oklch,var(--color-border),transparent 25%); box-shadow:0 8px 20px color-mix(in oklch,var(--color-shadow),transparent 88%); }
.data-ai-menu__category.is-active span { opacity:1; }
.data-ai-menu__content { display:flex; flex-direction:column; min-width:0; padding:2.5rem 3rem 1.5rem; }
.data-ai-menu__panel { display:none; flex:1; }
.data-ai-menu__panel.is-active { display:block; }
.data-ai-menu__grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:2.2rem 2.8rem; }
.data-ai-menu__grid a { display:block; color:inherit; text-decoration:none; }
.data-ai-menu__grid strong { display:block; margin-bottom:.4rem; color:var(--color-text-primary); font-size:1rem; font-weight:var(--fw-semibold); line-height:1.25; }
.data-ai-menu__grid span { display:block; max-width:28ch; color:var(--color-text-tertiary); font-size:.83rem; line-height:1.5; }
.data-ai-menu__grid a:hover strong { color:var(--color-accent-strong); }
.data-ai-menu__signature { margin:auto 0 0; padding-top:1.25rem; border-top:1px solid var(--color-border); color:var(--color-accent-strong); font-size:.95rem; font-style:italic; text-align:center; font-family:var(--font-heading), Georgia, serif; }

.enterprise-practices-menu__rail { display:flex; flex-direction:column; gap:.55rem; padding:2rem 1.5rem; background:color-mix(in oklch,var(--color-bg-secondary),var(--color-glass-strong) 85%); border-right:1px solid color-mix(in oklch,var(--color-border),transparent 35%); position:relative; }
.enterprise-practices-menu__eyebrow { margin:0 0 .65rem .75rem; color:var(--color-text-tertiary); font-family:var(--font-mono); font-size:.65rem; letter-spacing:var(--ls-label-md); text-transform:uppercase; }
.enterprise-practices-menu__category { min-height:48px; display:flex; align-items:center; justify-content:space-between; padding:.78rem 1rem; color:var(--color-text-secondary); font:inherit; font-size:.9rem; font-weight:var(--fw-medium); background:transparent; border:1px solid transparent; border-radius:var(--radius-md); cursor:pointer; }
.enterprise-practices-menu__category span { opacity:0; color:var(--color-accent-strong); font-weight:bold; }
.enterprise-practices-menu__category:hover,.enterprise-practices-menu__category.is-active { color:var(--color-accent-strong); background:var(--color-bg-primary); border-color:color-mix(in oklch,var(--color-border),transparent 25%); box-shadow:0 8px 20px color-mix(in oklch,var(--color-shadow),transparent 88%); }
.enterprise-practices-menu__category.is-active span { opacity:1; }
.enterprise-practices-menu__content { display:flex; flex-direction:column; min-width:0; padding:2.5rem 3rem 1.5rem; }
.enterprise-practices-menu__panel { display:none; flex:1; }
.enterprise-practices-menu__panel.is-active { display:block; }
.enterprise-practices-menu__grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:2.2rem 2.8rem; }
.enterprise-practices-menu__grid a { display:block; color:inherit; text-decoration:none; }
.enterprise-practices-menu__grid strong { display:block; margin-bottom:.4rem; color:var(--color-text-primary); font-size:1rem; font-weight:var(--fw-semibold); }
.enterprise-practices-menu__grid span { display:block; max-width:28ch; color:var(--color-text-tertiary); font-size:.83rem; line-height:1.5; }
.enterprise-practices-menu__grid a:hover strong { color:var(--color-accent-strong); }
.enterprise-practices-menu__signature { margin:auto 0 0; padding-top:1.25rem; border-top:1px solid var(--color-border); color:var(--color-accent-strong); font-size:.95rem; font-style:italic; text-align:center; font-family:var(--font-heading), Georgia, serif; }

.data-ai-menu__illustration,
.enterprise-practices-menu__illustration {
  margin-top: auto;
  padding-top: 1rem;
  opacity: 0.95;
  pointer-events: none;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
}
:root[data-theme="dark"] .product-engineering-menu { background: color-mix(in oklch, var(--color-bg-primary), #071126 16%); border-color: color-mix(in oklch, var(--color-glow), transparent 72%); box-shadow: 0 28px 75px rgba(0,0,0,.78); }
:root[data-theme="dark"] .product-engineering-menu__rail { background: color-mix(in oklch, var(--color-bg-secondary), #15274c 18%); }
:root[data-theme="dark"] .data-ai-menu { background:color-mix(in oklch,var(--color-bg-primary),#071126 16%); border-color:color-mix(in oklch,var(--color-glow),transparent 72%); box-shadow:0 28px 75px rgba(0,0,0,.78); }:root[data-theme="dark"] .data-ai-menu__rail { background:color-mix(in oklch,var(--color-bg-secondary),#15274c 18%); }
:root[data-theme="dark"] .enterprise-practices-menu { background:color-mix(in oklch,var(--color-bg-primary),#071126 16%); border-color:color-mix(in oklch,var(--color-glow),transparent 72%); box-shadow:0 28px 75px rgba(0,0,0,.78); }:root[data-theme="dark"] .enterprise-practices-menu__rail { background:color-mix(in oklch,var(--color-bg-secondary),#15274c 18%); }
@media (max-width: 1099px) { .product-engineering-nav { display: none; } }
@media (max-width: 1099px) { .data-ai-nav { display: none; } }
@media (max-width: 1099px) { .enterprise-practices-nav { display: none; } }
@media (max-width: 1099px) { .industries-nav { display:none; } }

:root[data-theme="dark"] .industries-menu {
  background: color-mix(in oklch, var(--color-bg-primary), #071126 16%);
  border-color: color-mix(in oklch, var(--color-glow), transparent 72%);
  box-shadow: 0 28px 75px rgba(0, 0, 0, 0.85);
}

.mobile-product-engineering summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; color: var(--color-text-primary); font-weight: var(--fw-medium); list-style: none; }
.mobile-data-ai summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; color: var(--color-text-primary); font-weight: var(--fw-medium); list-style: none; }
.mobile-product-engineering summary::-webkit-details-marker { display: none; }
.mobile-data-ai summary::-webkit-details-marker { display: none; }
.mobile-product-engineering summary::after { content: '+'; margin-left: auto; color: var(--color-accent-strong); font-size: 1.25rem; }
.mobile-data-ai summary::after { content: '+'; margin-left: auto; color: var(--color-accent-strong); font-size: 1.25rem; }
.mobile-product-engineering details[open] summary::after { content: '−'; }
.mobile-data-ai details[open] summary::after { content: '−'; }
.mobile-product-engineering__content { display: grid; gap: .25rem; padding: .4rem 0 .8rem .7rem; }
.mobile-product-engineering__content strong { margin-top: .55rem; color: var(--color-text-secondary); font-size: .76rem; }
.mobile-product-engineering__content a { display: flex; align-items: center; min-height: 44px; color: var(--color-text-tertiary); text-decoration: none; font-size: .88rem; }

.site-header__dropdown-chevron {
  transition: transform var(--transition-base);
  margin-left: 0.15rem;
}

.site-header__dropdown-item.is-open .site-header__dropdown-chevron {
  transform: rotate(180deg);
}

.site-header__dropdown-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: max-content;
  min-width: 290px;
  max-width: 380px;
  padding: 0.85rem;
  isolation: isolate;
  background: var(--color-bg-primary);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: 1px solid color-mix(in oklch, var(--color-border), white 12%);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px color-mix(in oklch, var(--color-shadow), transparent 25%), 0 0 0 1px color-mix(in oklch, white, transparent 82%) inset;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 1000;
  transition: opacity 0.25s var(--ease-out-expo), transform 0.25s var(--ease-out-expo), visibility 0.25s;
}


:root[data-theme="dark"] .site-header__dropdown-menu {
  background: var(--color-bg-primary);
  border-color: color-mix(in oklch, var(--color-glow), transparent 72%);
  box-shadow: 0 28px 75px rgba(0, 0, 0, 0.85), 0 0 0 1px rgba(255, 255, 255, 0.08) inset;
}

.site-header__dropdown-menu--compact {
  min-width: 270px;
}

/* Dropdowns are intentional click disclosures, not hover traps. */
.site-header__dropdown-item.is-open .site-header__dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.site-header__dropdown-grid {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.site-header__dropdown-link {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background var(--transition-base), transform var(--transition-base);
}

.site-header__dropdown-link:hover {
  background: color-mix(in oklch, var(--color-accent-soft), transparent 30%);
  transform: translateX(3px);
}

.site-header__dropdown-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.site-header__dropdown-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.site-header__dropdown-text strong {
  font-family: var(--font-body);
  font-size: 0.825rem;
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
  line-height: 1.2;
}

.site-header__dropdown-text span {
  font-size: 0.725rem;
  color: var(--color-text-tertiary);
  line-height: 1.3;
}

.site-header__dropdown-link:hover .site-header__dropdown-text strong {
  color: var(--color-accent-strong);
}

/* ═══════════════════════════════════════════════════════════════════════
   AZILEN-INSPIRED SPLIT TABBED MEGA-MENU (Services Dropdown)
═══════════════════════════════════════════════════════════════════════ */
.site-header__megamenu {
  width: min(80vw, 1180px);
  min-width: 0;
  max-width: calc(100vw - 2rem);
  min-height: 470px;
  padding: 1.25rem;
  border-radius: var(--radius-xl);
}

.megamenu__container {
  display: grid;
  grid-template-columns: 33% 67%;
  gap: 0;
  align-items: stretch;
  min-height: 440px;
}

.megamenu__sidebar {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1rem;
  background: color-mix(in oklch, var(--color-accent-soft), var(--color-glass-strong) 72%);
  border-right: 1px solid color-mix(in oklch, var(--color-border), transparent 35%);
  border-radius: calc(var(--radius-xl) - 6px) 0 0 calc(var(--radius-xl) - 6px);
}

.megamenu__label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: var(--ls-label-md);
  color: var(--color-text-tertiary);
  margin-bottom: 0.35rem;
  padding-left: 0.5rem;
}

.megamenu__tab {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.65rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  background: transparent;
  border: 1px solid transparent;
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.megamenu__tab-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  flex-shrink: 0;
}

.megamenu__tab-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  flex-grow: 1;
}

.megamenu__tab-text strong {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
  line-height: 1.2;
}

.megamenu__tab-text span {
  font-size: 0.7rem;
  color: var(--color-text-tertiary);
}

.megamenu__tab-arrow {
  font-size: 0.85rem;
  color: var(--color-accent-strong);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.megamenu__tab:hover,
.megamenu__tab.is-active {
  background: color-mix(in oklch, var(--color-accent-soft), transparent 20%);
  border-color: color-mix(in oklch, var(--color-accent-border), transparent 50%);
  transform: translateX(3px);
}

.megamenu__tab:hover .megamenu__tab-arrow,
.megamenu__tab.is-active .megamenu__tab-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* Right-Hand Content Preview Panel */
.megamenu__preview {
  position: relative;
  display: flex;
  align-items: center;
  padding: 1.5rem 1.75rem;
}

.megamenu__panel {
  display: none;
  flex-direction: column;
  gap: 1rem;
  padding: .5rem;
  border-radius: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  width: 100%;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s var(--ease-out-expo), transform 0.3s var(--ease-out-expo);
}

.megamenu__panel.is-active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

.megamenu__badge {
  align-self: flex-start;
  font-size: 0.68rem;
}

.megamenu__panel-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: var(--fw-bold);
  color: var(--color-text-primary);
  line-height: 1.25;
  margin: 0;
}

.megamenu__panel-body {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
  margin: 0;
}

.megamenu__panel-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.35rem 2rem;
  padding-left: 0;
  margin: 0;
  list-style: none;
}

.megamenu__panel-list li {
  position: relative;
  padding-left: 0;
  font-size: .85rem;
  color: var(--color-text-primary);
  line-height: 1.3;
}

.megamenu__panel-list li::before {
  content: '';
}

.megamenu__panel-cta {
  margin-top: 0.35rem;
  align-self: flex-start;
}

:root[data-theme="dark"] .site-header .btn--primary {
  color: var(--color-text-on-accent);
  border-color: color-mix(in oklch, var(--color-glow), white 16%);
  box-shadow: 0 10px 24px oklch(56% 0.19 278 / 0.3), 0 0 18px oklch(68% 0.18 215 / 0.12),
    0 1px 0 oklch(100% 0 0 / 0.3) inset;
}

:root[data-theme="dark"] .site-header .btn--primary:hover,
:root[data-theme="dark"] .site-header .btn--primary:focus-visible {
  box-shadow: 0 15px 30px oklch(56% 0.19 278 / 0.38), 0 0 25px oklch(68% 0.18 215 / 0.2),
    0 1px 0 oklch(100% 0 0 / 0.36) inset;
}

:root[data-theme="dark"] .mobile-menu-panel {
  background: color-mix(in oklch, var(--color-bg-card), transparent 12%);
  border-color: color-mix(in oklch, var(--color-glow), transparent 76%);
  box-shadow: var(--shadow-menu), 0 1px 0 oklch(100% 0 0 / 0.06) inset;
}

:root[data-theme="dark"] .mobile-menu-panel a {
  color: var(--color-text-secondary);
}

:root[data-theme="dark"] .mobile-menu-panel a:hover,
:root[data-theme="dark"] .mobile-menu-panel a.is-active {
  color: var(--color-text-primary);
}