.site-header{padding:var(--space-xs)0;border-bottom:2px solid var(--color-ink);background:var(--color-paper);position:sticky;top:0;z-index:100}.site-header .container{display:flex;align-items:center;justify-content:space-between}.site-brand{display:flex;align-items:center;gap:var(--space-2xs);text-decoration:none;color:var(--color-ink)}.site-brand:hover{color:var(--color-accent);text-decoration:none}.site-brand img{width:36px;height:36px;border-radius:50%;object-fit:cover}.site-brand span{font-family:var(--font-display);font-size:var(--step-1);font-weight:900}.nav-links{display:flex;align-items:center;gap:var(--space-s);list-style:none;margin:0;padding:0}.nav-links a{font-family:var(--font-body);font-size:var(--step--1);color:var(--color-ink);text-decoration:none;text-transform:uppercase;letter-spacing:.05em;font-weight:500;transition:color .15s ease}.nav-links a:hover{color:var(--color-accent)}.nav-search-btn{background:0 0;border:none;cursor:pointer;color:var(--color-ink);padding:var(--space-3xs);display:flex;align-items:center;transition:color .15s ease}.nav-search-btn:hover{color:var(--color-accent)}.nav-search-btn svg{width:20px;height:20px}.hamburger{display:none;background:0 0;border:none;cursor:pointer;padding:var(--space-3xs);color:var(--color-ink)}.hamburger svg{width:24px;height:24px}.mobile-nav{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:var(--color-paper);z-index:200;padding:var(--space-l);flex-direction:column;gap:var(--space-xs)}.mobile-nav.open{display:flex}.mobile-nav-close{align-self:flex-end;background:0 0;border:none;cursor:pointer;color:var(--color-ink);padding:var(--space-3xs)}.mobile-nav-close svg{width:24px;height:24px}.mobile-nav a{font-family:var(--font-display);font-size:var(--step-2);font-weight:900;color:var(--color-ink);text-decoration:none;padding:var(--space-2xs)0;border-bottom:2px solid var(--color-ink);display:block}.mobile-nav a:hover{color:var(--color-accent)}@media(max-width:700px){.nav-links{display:none}.hamburger{display:flex}}