.site-header{position:sticky;top:0;z-index:40;border-bottom:1px solid var(--blue-100);background:rgba(255,255,255,.92);box-shadow:0 1px 3px rgba(23,59,145,.05);backdrop-filter:blur(18px)}.site-header__inner{position:relative;min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}.site-brand{display:flex;align-items:center;gap:10px;min-width:0;color:#1e40af;font-size:20px;font-weight:900}.site-brand__mark{width:44px;height:44px;display:grid;place-items:center;flex:none;border-radius:16px;background:linear-gradient(145deg,#2563eb,#1e40af);color:#fff;font-size:14px;box-shadow:0 8px 20px rgba(29,78,216,.2)}.site-nav{display:flex;align-items:center;gap:4px;margin-right:auto}.site-nav a{min-height:40px;display:flex;align-items:center;border-radius:12px;padding:8px 12px;color:var(--slate-700);font-size:14px;font-weight:700}.site-nav a:hover{background:var(--blue-50);color:var(--blue-700)}.site-header__actions{display:flex;align-items:center;gap:8px}.site-login{border-radius:999px;background:#1d4ed8;padding:10px 20px;color:#fff;font-size:14px;font-weight:900}.site-menu-button{display:none;width:44px;height:44px;border:1px solid var(--blue-100);border-radius:12px;background:#fff;color:var(--slate-700);cursor:pointer}.site-mobile-nav{position:absolute;top:62px;left:0;right:0;border:1px solid var(--blue-100);border-radius:16px;background:#fff;padding:8px;box-shadow:0 20px 45px rgba(15,23,42,.14)}.site-mobile-nav a{display:block;border-radius:12px;padding:12px;font-size:14px;font-weight:700}.site-mobile-nav a:hover{background:var(--blue-50)}@media(max-width:900px){.site-nav{display:none}.site-menu-button{display:grid;place-items:center}}