:root { color-scheme: dark; font-family: system-ui, sans-serif; background: #080f22; color: #edf7ff; }
body { margin: 0; padding: 6vh 20px; }
main { max-width: 640px; margin: auto; padding: 32px; border: 1px solid #284364; border-radius: 20px; background: #13223b; }
h1 { color: #fff0a5; font-size: 2.8rem; margin: 14px 0; }
p { line-height: 1.6; }
.eyebrow, a { color: #43e6ed; }
.button, button { display: block; text-align: center; margin: 20px 0; padding: 16px; border: 1px solid #43e6ed; border-radius: 8px; background: #17283e; color: #43e6ed; font: inherit; cursor: pointer; }
[hidden] { display: none !important; }
small { color: #a5b7ca; }