:root { color-scheme: dark; font-family: system-ui, sans-serif; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: #071a2b; color: #eaf6ff; }
main { width: min(34rem, calc(100% - 3rem)); padding: 3rem; border: 1px solid #1ea7ff; border-radius: 1rem; background: #0b2840; box-shadow: 0 1rem 3rem #0008; }
.eyebrow { color: #77cbff; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: .25rem 0 1rem; font-size: clamp(2.5rem, 8vw, 4.5rem); }
.warning { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid #2f5875; color: #a9c9dd; }