:root { color-scheme: light; --ar-moon: #F5F4EF; --ar-navy: #101C35; }
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--ar-moon); color: var(--ar-navy); }
main { min-height: 100vh; min-height: 100svh; display: grid; place-items: center; padding: clamp(16px, 4vw, 64px); }
.announcement { display: block; width: min(100%, 960px); height: auto; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }