*{box-sizing:border-box}body{margin:0;background:#f3f5f4;color:#123328;font-family:Arial,sans-serif}main{max-width:68rem;margin:auto;padding:2rem}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:5rem}header span{font-weight:700}h1{font-size:clamp(2rem,5vw,3.5rem)}p{max-width:42rem;line-height:1.6}select{min-height:44px;padding:.5rem;font:inherit}.app-header{position:sticky;top:0;z-index:100;margin:0;padding:1rem 2rem;gap:1rem;flex-wrap:wrap;background:#fff;border-bottom:1px solid #cbd5d0}.app-header a{color:inherit;text-decoration:none;padding:.65rem .5rem}.app-header nav{display:flex;gap:.5rem;flex-wrap:wrap}.app-header a[aria-current=page]{background:#e2ebe6;border-radius:.25rem}.app-header .brand{font-weight:700}.skip-link{position:fixed;top:-10rem;left:1rem;z-index:200;background:white;padding:1rem}.skip-link:focus{top:1rem}@media (max-width:640px){.app-header{padding:.5rem}.app-header nav{order:3;width:100%}}