.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(29,43,58,.10);
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(14px);
}
.site-header__inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}
.site-brand {
  flex: 0 1 auto;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.site-brand img { width: 190px; height: auto; }
.primary-nav { margin-left: auto; }
.primary-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 1.75rem);
  margin: 0;
  padding: 0;
  list-style: none;
}
.primary-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--neutral-700);
  font-size: var(--fs-14);
  font-weight: 750;
  text-decoration: none;
}
.primary-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: center;
  border-radius: 2px;
  background: var(--brand-petrol);
  transition: transform var(--motion-fast) var(--ease-standard);
}
.primary-nav a:hover,
.primary-nav a[aria-current="page"] { color: var(--brand-petrol-dark); }
.primary-nav a:hover::after,
.primary-nav a[aria-current="page"]::after { transform: scaleX(1); }
.header-cta { flex: 0 0 auto; }
.menu-toggle {
  width: 48px;
  height: 48px;
  display: none;
  place-items: center;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--brand-ink);
  background: var(--brand-sand);
  cursor: pointer;
}
.menu-toggle:hover { border-color: var(--border-strong); background: var(--brand-mist); }
.menu-toggle:focus-visible { outline: 0; box-shadow: var(--focus-ring); }
.menu-toggle__glyph { width: 24px; display: grid; gap: 6px; }
.menu-toggle__glyph span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--motion-base) var(--ease-standard), width var(--motion-base) var(--ease-standard), opacity var(--motion-base) var(--ease-standard);
}
.menu-toggle__glyph span:last-child { width: 15px; justify-self: end; }
.menu-toggle[aria-expanded="true"] .menu-toggle__glyph span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle__glyph span:last-child { width: 24px; transform: translateY(-4px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 900;
  display: grid;
  align-items: end;
}
.mobile-menu__backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(23,32,42,.56);
  opacity: 0;
  cursor: default;
  transition: opacity var(--motion-base) var(--ease-standard);
}
.mobile-menu__sheet {
  position: relative;
  z-index: 1;
  max-height: min(82vh, 680px);
  overflow: auto;
  transform: translateY(102%);
  border: 1px solid rgba(29,43,58,.10);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-5) var(--gutter-mobile) calc(var(--space-6) + env(safe-area-inset-bottom));
  color: var(--brand-ink);
  background: var(--brand-sand);
  box-shadow: var(--shadow-3);
  transition: transform var(--motion-base) var(--ease-standard);
}
.mobile-menu.is-open .mobile-menu__backdrop { opacity: 1; }
.mobile-menu.is-open .mobile-menu__sheet { transform: translateY(0); }
.mobile-menu__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}
.mobile-menu__title { margin: 0; font-family: var(--font-display); font-size: var(--fs-20); }
.mobile-menu__close {
  position: relative;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--white);
  cursor: pointer;
}
.mobile-menu__close::before,
.mobile-menu__close::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}
.mobile-menu__close::before { transform: rotate(45deg); }
.mobile-menu__close::after { transform: rotate(-45deg); }
.mobile-menu__list { margin: 0 0 var(--space-5); padding: 0; list-style: none; }
.mobile-menu__list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  border-bottom: 1px solid rgba(29,43,58,.12);
  color: var(--brand-ink);
  font-family: var(--font-display);
  font-size: var(--fs-20);
  font-weight: 750;
  text-decoration: none;
}
.mobile-menu__list a::after { content: "→"; color: var(--brand-clay); }
.mobile-menu__list a[aria-current="page"] { color: var(--brand-petrol-dark); }
.mobile-menu__cta { width: 100%; }

.shell-intro {
  padding-block: clamp(3.5rem, 8vw, 7rem);
  background: linear-gradient(135deg, var(--brand-sand), var(--brand-mist));
}
.shell-intro__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, .75fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.shell-intro__panel {
  min-height: 330px;
  display: grid;
  align-content: end;
  border: 1px solid rgba(29,43,58,.12);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--white);
  background:
    linear-gradient(180deg, rgba(29,43,58,.05), rgba(29,43,58,.78)),
    radial-gradient(circle at 82% 18%, rgba(185,83,63,.42), transparent 36%),
    linear-gradient(135deg, #8DA49E, #26464A);
  box-shadow: var(--shadow-2);
}
.shell-intro__panel p { margin: 0; max-width: 34ch; font-weight: 750; }
.shell-section { padding-block: clamp(3rem, 7vw, 5.5rem); }
.shell-section--muted { background: var(--surface-subtle); }
.shell-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: var(--space-5); }

.site-footer {
  color: rgba(255,255,255,.82);
  background: var(--brand-ink);
}
.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) minmax(160px, .7fr) minmax(180px, .8fr);
  gap: var(--space-10);
  padding-block: clamp(3rem, 6vw, 5rem);
}
.site-footer__brand img { width: 205px; height: auto; filter: brightness(0) invert(1); }
.site-footer__brand p { color: rgba(255,255,255,.72); }
.site-footer__rule { width: 54px; height: 4px; margin-block: var(--space-4); border-radius: 3px; background: var(--brand-clay); }
.site-footer h2 { color: var(--white); font-size: var(--fs-18); }
.site-footer ul { margin: 0; padding: 0; list-style: none; }
.site-footer li + li { margin-top: var(--space-2); }
.site-footer a { color: rgba(255,255,255,.82); text-underline-offset: 4px; }
.site-footer a:hover { color: var(--white); }
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,.14);
  padding-block: var(--space-4);
  color: rgba(255,255,255,.60);
  font-size: var(--fs-14);
}

@media (max-width: 980px) {
  .js .primary-nav,
  .js .header-cta { display: none; }
  .js .menu-toggle { display: grid; }
  html:not(.js) .site-header__inner { flex-wrap: wrap; padding-block: var(--space-3); }
  html:not(.js) .primary-nav { order: 3; width: 100%; }
  html:not(.js) .primary-nav__list { flex-wrap: wrap; }
  .shell-intro__grid { grid-template-columns: 1fr; }
  .shell-intro__panel { min-height: 260px; }
  .shell-grid { grid-template-columns: 1fr 1fr; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
  .site-footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 620px) {
  :root { --header-height: 68px; }
  .site-brand img { width: 154px; }
  .site-header__inner { gap: var(--space-3); }
  .shell-intro { padding-block: 3rem; }
  .shell-intro__panel { min-height: 220px; border-radius: var(--radius-lg); }
  .shell-grid { grid-template-columns: 1fr; }
  .site-footer__inner { grid-template-columns: 1fr; gap: var(--space-8); }
  .site-footer__brand { grid-column: auto; }
}
@media (max-width: 370px) {
  .site-brand img { width: 145px; }
  .menu-toggle { width: 46px; height: 46px; }
}