:root{font-family:system-ui,sans-serif;line-height:1.5;color:#1a1a1a;background:#fafafa}body{margin:0}.shell{min-height:100vh;display:flex;flex-direction:column}.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem 1.25rem;background:#fff;border-bottom:1px solid #e5e5e5}.nav__main{display:flex;gap:1.25rem}.nav a{color:#0d47a1;text-decoration:none}.nav a:hover{text-decoration:underline}.nav__user{font-size:.9rem}.nav__guest{font-size:.85rem}.nav__right{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;justify-content:flex-end}.nav__guest-link{font-size:.9rem}