.site-header {
    position: fixed; inset: 0 0 auto; z-index: 100; color: var(--color-inverse);
    transition: background var(--transition-base), color var(--transition-base), border var(--transition-base), transform var(--transition-base);
}
.page-interior .site-header {
    color: var(--color-text);
    background: rgba(246,243,236,.96);
    border-bottom: 1px solid var(--color-border);
}
.site-header.is-scrolled { color: var(--color-text); background: rgba(246,243,236,.92); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid var(--color-border); }
.site-header__inner { min-height: 5rem; display: grid; grid-template-columns: auto 1fr; align-items: center; gap: clamp(2rem, 4vw, 5rem); }
.site-header__brand { position: relative; z-index: 3; font-size: clamp(1.75rem, 2.5vw, 2.75rem); }
.desktop-navigation { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: var(--space-4); }
.desktop-navigation__list { display: flex; align-items: center; justify-content: center; gap: clamp(1rem, 1.65vw, 1.8rem); font-size: clamp(.7rem, .66rem + .08vw, .78rem); }
.desktop-navigation__item { position: relative; }
/* Anchor the wide panel to the header so additional links cannot push it off-screen. */
.desktop-navigation__item--has-menu { position: static; }
.desktop-navigation__list a, .desktop-navigation__utility-link { position: relative; }
.desktop-navigation__list a::after, .desktop-navigation__utility-link::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -.34rem; height: 1px; background: currentColor; transition: right var(--transition-base); }
.desktop-navigation__list a:hover::after, .desktop-navigation__utility-link:hover::after { right: 0; }
.desktop-navigation__utility { display: flex; align-items: center; gap: var(--space-3); font-size: .74rem; }
.surface-mega-menu {
    position: absolute;
    top: calc(100% - 1px);
    left: 50%;
    z-index: 5;
    display: grid;
    grid-template-columns: minmax(12rem, .62fr) minmax(42rem, 1.9fr);
    gap: clamp(1.4rem, 3vw, 3rem);
    width: min(70rem, 86vw);
    padding: 1.4rem;
    color: var(--color-text);
    background: rgba(246,243,236,.98);
    border: 1px solid rgba(21,21,18,.16);
    box-shadow: 0 1.5rem 4rem rgba(21,21,18,.16);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translate(-50%, .5rem);
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
}
.surface-mega-menu::before { content: ""; position: absolute; left: 0; right: 0; bottom: 100%; height: 2.4rem; }
.desktop-navigation__item--has-menu:hover .surface-mega-menu,
.desktop-navigation__item--has-menu:focus-within .surface-mega-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, 0);
}
.desktop-navigation__item--has-menu.is-open .surface-mega-menu { opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0); }
.desktop-navigation__item--has-menu.is-closed .surface-mega-menu { opacity: 0; visibility: hidden; pointer-events: none; }
.surface-mega-menu__intro { display: flex; flex-direction: column; justify-content: space-between; gap: 1.5rem; padding: .4rem 0 .2rem; }
.surface-mega-menu__intro p:not(.eyebrow) { max-width: 15rem; margin: 0; color: var(--color-muted); font-size: .82rem; line-height: 1.55; }
.surface-mega-menu__all { display: inline-flex; align-items: center; gap: .5rem; width: fit-content; padding-bottom: .35rem; border-bottom: 1px solid currentColor; font-size: .72rem; }
.surface-mega-menu__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .6rem; }
.surface-mega-menu__card { display: grid; grid-template-rows: 8.5rem auto; min-width: 0; background: var(--color-paper); }
.surface-mega-menu__card, .surface-mega-menu__all { z-index: 1; }
.surface-mega-menu__media { display: block; overflow: hidden; background: var(--color-soft); }
.surface-mega-menu__media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-base); }
.surface-mega-menu__card:hover .surface-mega-menu__media img,
.surface-mega-menu__card:focus-visible .surface-mega-menu__media img { transform: scale(1.05); }
.surface-mega-menu__copy { display: grid; gap: .35rem; padding: .8rem .8rem .9rem; }
.surface-mega-menu__copy small { color: var(--color-muted); font-size: .58rem; letter-spacing: .12em; }
.surface-mega-menu__copy strong { font-family: var(--font-display); font-size: 1.1rem; font-weight: 400; line-height: 1; }
.surface-mega-menu__copy em { color: var(--color-muted); font-size: .65rem; font-style: normal; }
.page-interior .site-header .button--ghost-light { color: var(--color-text); border-color: rgba(21,21,18,.45); }
.page-interior .site-header .button--ghost-light:hover { color: #fff; background: var(--color-dark); border-color: var(--color-dark); }
.site-header.is-scrolled .button--ghost-light { color: var(--color-text); border-color: rgba(21,21,18,.45); }
.site-header.is-scrolled .button--ghost-light:hover { color: #fff; background: var(--color-dark); border-color: var(--color-dark); }
.site-header__menu-button { display: none; width: 2.8rem; height: 2.8rem; align-items: center; justify-content: center; border: 0; background: transparent; cursor: pointer; justify-self: end; }
.menu-icon { width: 1.45rem; display: grid; gap: .38rem; }
.menu-icon i { height: 1px; background: currentColor; transition: transform var(--transition-fast); }
.site-header__menu-button[aria-expanded="true"] .menu-icon i:first-child { transform: translateY(4px) rotate(45deg); }
.site-header__menu-button[aria-expanded="true"] .menu-icon i:last-child { transform: translateY(-3px) rotate(-45deg); }

.mobile-navigation { position: fixed; inset: 0; z-index: 2; min-height: 100svh; max-height: 100svh; overflow-y: auto; background: var(--color-dark); color: var(--color-inverse); }
.mobile-navigation[hidden] { display: none; }
.mobile-navigation__inner { min-height: 100svh; display: grid; grid-template-rows: auto 1fr auto; padding-top: 6.8rem; padding-bottom: var(--space-4); }
.mobile-navigation__brand { color: rgba(255,255,255,.42); font-size: 1.5rem; }
.mobile-navigation__list { display: grid; align-content: center; gap: .65rem; }
.mobile-navigation__list a { display: grid; grid-template-columns: 2rem 1fr; align-items: center; padding-block: .35rem; font-family: var(--font-display); font-size: clamp(2.7rem, 9vw, 5rem); line-height: .94; letter-spacing: -.04em; }
.mobile-navigation__surface-toggle { display: grid; grid-template-columns: 2rem 1fr auto; align-items: center; width: 100%; padding: .35rem 0; border: 0; color: inherit; background: none; text-align: left; cursor: pointer; font-family: var(--font-display); font-size: clamp(2.7rem, 9vw, 5rem); line-height: .94; letter-spacing: -.04em; }
.mobile-navigation__surface-toggle span:first-child { align-self: start; padding-top: .42rem; color: rgba(255,255,255,.35); font-family: var(--font-sans); font-size: .62rem; letter-spacing: .1em; }
.mobile-navigation__surface-toggle span:last-child { font-family: var(--font-sans); font-size: 1.3rem; }
.mobile-navigation__surfaces[hidden] { display: none; }
.mobile-navigation__surfaces { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .2rem .8rem; padding: .4rem 0 .8rem 2rem; }
.mobile-navigation__surfaces a { display: block; padding: .65rem 0; font-family: var(--font-sans); font-size: .85rem; line-height: 1.3; letter-spacing: 0; }
.mobile-navigation:has(.mobile-navigation__surfaces:not([hidden])) { overflow-y: auto; max-height: 100svh; }
.mobile-navigation:has(.mobile-navigation__surfaces:not([hidden])) .mobile-navigation__inner { height: auto; }
.mobile-navigation__surfaces a:first-child { grid-column: 1 / -1; }
.mobile-navigation__list a span { align-self: start; padding-top: .42rem; color: rgba(255,255,255,.35); font-family: var(--font-sans); font-size: .62rem; letter-spacing: .1em; }
.mobile-navigation__footer { display: flex; align-items: end; justify-content: space-between; gap: var(--space-3); padding-top: var(--space-4); border-top: 1px solid rgba(255,255,255,.16); }
.mobile-navigation__actions { display: flex; align-items: center; gap: var(--space-2); }
.mobile-navigation__footer p { max-width: 14rem; margin: 0; color: rgba(255,255,255,.45); font-family: var(--font-display); font-size: var(--text-sm); font-style: italic; }

@media (max-width: 82rem) {
    .site-header__inner { grid-template-columns: auto 1fr auto; }
    .desktop-navigation { display: none; }
    .site-header__menu-button { display: inline-flex; }
    .surface-mega-menu { display: none; }
    .site-header:has(.mobile-navigation:not([hidden])) { color: var(--color-inverse); background: var(--color-dark); border: 0; }
}
@media (max-width: 38rem) {
    .site-header__inner { min-height: 4.5rem; }
    .site-header__brand { font-size: 2rem; }
    .mobile-navigation__footer { align-items: flex-start; flex-direction: column; }
    .mobile-navigation__actions { align-items: flex-start; flex-direction: column; }
}