.site-header{position:fixed;z-index:100;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:16px var(--gutter);pointer-events:none;background:linear-gradient(180deg,rgba(2,2,4,.72),transparent);transition:transform .35s var(--ease-out)}
.site-header>*{pointer-events:auto}.site-brand{text-decoration:none;color:var(--ink)}
.site-header__actions{display:flex;align-items:center;gap:.5rem}.menu-toggle,.theme-toggle,.menu-panel__close{border:1px solid rgba(255,255,255,.16);background:rgba(7,7,11,.54);backdrop-filter:blur(18px);cursor:pointer}
.menu-toggle{display:flex;align-items:center;gap:.7rem;min-height:42px;padding:.52rem .9rem;border-radius:var(--radius-pill);text-transform:uppercase;font-size:.65rem;letter-spacing:.14em}
.menu-toggle__icon{width:20px;height:12px;border-top:1.5px solid currentColor;border-bottom:1.5px solid currentColor}
.theme-toggle,.menu-panel__close{display:grid;place-items:center;width:42px;height:42px;border-radius:50%}
.menu-shell{position:fixed;inset:0;z-index:200;visibility:hidden;pointer-events:none}.menu-shell__scrim{position:absolute;inset:0;background:rgba(0,0,0,.52);opacity:0;transition:opacity var(--duration)}
.menu-shell__layer,.menu-panel{position:absolute;top:0;right:0;width:100%;height:100%;transform:translateX(105%);transition:transform .7s var(--ease-out)}
.menu-shell__layer--one{background:var(--brand-primary);transition-delay:.12s}.menu-shell__layer--two{background:var(--brand-secondary);transition-delay:.06s}
.menu-panel{display:flex;flex-direction:column;padding:clamp(1.2rem,3vw,2.2rem);background:var(--surface-raised);transition-delay:0s;overflow-y:auto}
.is-menu-open{overflow:hidden}.is-menu-open .menu-shell{visibility:visible;pointer-events:auto}.is-menu-open .menu-shell__scrim{opacity:1}.is-menu-open .menu-shell__layer--one{transform:translateX(0);transition-delay:0s}.is-menu-open .menu-shell__layer--two{transform:translateX(0);transition-delay:.07s}.is-menu-open .menu-panel{transform:translateX(0);transition-delay:.14s}
.menu-panel__top{display:flex;align-items:center;justify-content:space-between}.menu-panel__eyebrow{font-size:.75rem;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-muted)}
.primary-navigation{margin-block:auto;padding-block:3rem}.primary-navigation ul{list-style:none;margin:0;padding:0}.primary-navigation a{display:block;padding:.26em 0;font-size:clamp(2rem,5vw,4.8rem);font-weight:550;line-height:1.08;letter-spacing:-.05em;text-decoration:none}.primary-navigation a:hover{color:var(--brand-secondary)}
.menu-panel__footer{display:flex;align-items:center;justify-content:space-between;gap:1rem;border-top:1px solid var(--line);padding-top:1.5rem}.menu-panel__footer>a:first-child{font-size:.85rem;color:var(--ink-muted)}
@media(max-width:767px){.site-header__cta{display:none}.brand-mark__text{font-size:.95rem}.menu-toggle__label{display:none}}
@media(min-width:768px){.menu-shell__layer,.menu-panel{width:445px}}
@media(min-width:1024px){.menu-shell__layer,.menu-panel{width:594px}}
@media(min-width:1280px){.menu-shell__layer,.menu-panel{width:520px}}