.site-header{position:fixed;top:0;left:0;width:100%;z-index:var(--z-header);background-color:#fff0;border-bottom:1px solid #fff0;transition:background-color var(--transition-base),border-color var(--transition-base),box-shadow var(--transition-base)}body:not(.scene-dark) .site-header{background-color:rgb(250 250 250 / .85);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom-color:rgb(26 26 26 / .1)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:var(--space-6)}@media (max-width:768px){.header-inner{height:60px}}.site-branding{flex-shrink:0}.site-logo{display:inline-block;text-decoration:none;transition:opacity 0.3s ease}.site-logo:hover{opacity:.7}.site-logo__img{display:block;height:auto;filter:brightness(0);transition:filter 0.4s ease}body.scene-dark .site-logo__img{filter:brightness(0) invert(1)}.site-logo-text{font-family:var(--font-heading);font-size:var(--text-xl);font-weight:var(--weight-bold);color:#1a1a1a;text-decoration:none;letter-spacing:var(--tracking-tight)}.main-navigation{display:flex;align-items:center}@media (max-width:1024px){.main-navigation{display:none}}.nav-menu{display:flex;align-items:center;gap:var(--space-8);list-style:none;margin:0;padding:0}.nav-link{font-family:var(--font-body);font-size:var(--text-sm);font-weight:var(--weight-medium);color:rgb(26 26 26 / .55);text-decoration:none;letter-spacing:var(--tracking-wide);text-transform:uppercase;transition:color var(--transition-fast);position:relative;padding:var(--space-2) 0}.nav-link::after{content:'';position:absolute;bottom:0;left:0;width:0;height:1px;background-color:#1a1a1a;transition:width var(--transition-base)}.nav-link:hover{color:#1a1a1a}.nav-link:hover::after{width:100%}.current-menu-item .nav-link{color:#1a1a1a}.current-menu-item .nav-link::after{width:100%}body.scene-dark .nav-link{color:rgb(255 255 255 / .6)}body.scene-dark .nav-link:hover,body.scene-dark .current-menu-item .nav-link{color:#fff}body.scene-dark .nav-link::after{background-color:#fff}.header-cta{flex-shrink:0}.header-cta__link{font-family:var(--font-body);font-size:var(--text-sm);font-weight:var(--weight-regular);color:rgb(26 26 26 / .55);text-decoration:none;transition:color 0.4s ease}.header-cta__link:hover{color:#1a1a1a}body.scene-dark .header-cta__link{color:rgb(255 255 255 / .7)}body.scene-dark .header-cta__link:hover{color:#fff}.site-header.scrolled{box-shadow:var(--shadow-sm)}body{padding-top:72px}@media (max-width:768px){body{padding-top:60px}}