:root{--primary:#1767b8;--dark:#0a4472}.expo-header{background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.05);position:sticky;top:0;width:100%;z-index:1000}.expo-nav{align-items:center;display:flex;justify-content:space-between;margin:0 auto;max-width:1300px;padding:1rem}.expo-logo{color:var(--primary);font-size:1.3rem;font-weight:700;text-decoration:none}.expo-nav-links{display:flex;gap:1.5rem}.expo-nav-links a{color:#000;font-size:17px;font-weight:500;text-decoration:none;transition:color .3s}.expo-nav-links a:hover{color:var(--primary)}.expo-menu-toggle{color:var(--dark);cursor:pointer;display:none;font-size:1.5rem}@media (max-width:768px){.expo-nav-links{align-items:center;background:#fff;border-top:1px solid #eee;display:none;flex-direction:column;gap:1rem;left:0;padding:1rem 0;position:absolute;top:65px;width:100%}.expo-nav-links.show{display:flex}.expo-menu-toggle{display:block}}