.site-header{position:fixed;inset:0 0 auto;z-index:1000;background:rgba(9,8,7,.82);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}html[data-theme="light"] .site-header{background:rgba(255,248,236,.88)}.nav-shell{max-width:var(--max);height:76px;margin:auto;padding:0 24px;display:flex;align-items:center;gap:34px}.nav-shell nav{display:flex;gap:24px;margin-left:auto}.nav-shell nav a{font-size:.78rem;text-transform:uppercase;letter-spacing:.07em;font-weight:700;position:relative}.nav-shell nav a:after{content:"";position:absolute;left:0;right:100%;bottom:-9px;height:2px;background:var(--red);transition:.25s}.nav-shell nav a:hover:after{right:0}.nav-actions{display:flex;align-items:center;gap:10px}.theme-toggle,.menu-toggle{border:1px solid var(--line);background:var(--panel);color:var(--text);cursor:pointer}.theme-toggle{width:42px;height:42px;border-radius:50%;font-size:1.2rem}.nav-cta{padding:11px 16px;border-radius:7px;background:var(--red);color:white;text-transform:uppercase;font-size:.72rem;font-weight:800}.menu-toggle{display:none;width:44px;height:40px;border-radius:8px;padding:9px}.menu-toggle span:not(.sr-only){display:block;height:2px;background:currentColor;margin:4px 0}

.nav-shell>.brand{font-size:2.05rem}
.nav-shell nav a:focus-visible,.theme-toggle:focus-visible,.menu-toggle:focus-visible,.nav-cta:focus-visible{outline:2px solid var(--gold);outline-offset:4px}