:root{color:#111827;background:#f9fafb;font-family:system-ui,sans-serif}html,body{height:100%}body{flex-direction:column;margin:0;display:flex}.shell-header{color:#fff;background:#111827;flex:none}.shell-nav{align-items:center;gap:1.5rem;padding:.75rem 1.5rem;display:flex}.shell-brand{letter-spacing:.04em;font-weight:700}.shell-nav ul{flex:1;gap:1rem;margin:0;padding:0;list-style:none;display:flex}.shell-nav a{color:#d1d5db;border-bottom:2px solid #0000;padding:.25rem 0;text-decoration:none}.shell-nav a[aria-current=page]{color:#fff;border-bottom-color:#f97316}.shell-main{box-sizing:border-box;background:#fff;border-radius:8px;flex-direction:column;flex:1;width:calc(100% - 3rem);max-width:960px;min-height:0;margin:2rem auto;display:flex;overflow:hidden;box-shadow:0 1px 3px #0000001a}.shell-main>[id^=single-spa-application\:]{flex:1;min-height:0;overflow:auto}.shell-error{border-left:4px solid #b91c1c;padding:1.5rem}.shell-error pre{white-space:pre-wrap;color:#7f1d1d}