.site-header{position:sticky;top:0;z-index:10;backdrop-filter:saturate(120%) blur(8px);background:linear-gradient(180deg,rgba(11,13,18,0.9),rgba(11,13,18,0.6));border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none}.brand-logo{width:36px;height:36px;border-radius:8px;object-fit:cover;box-shadow:var(--shadow)}.brand-name{font-weight:700;letter-spacing:0.2px;text-transform:lowercase}.nav{display:flex;gap:16px}.nav-link{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:10px;border:1px solid transparent}.nav-link:hover{color:var(--text);border-color:var(--border);background:rgba(255,255,255,0.03)}