:root { color-scheme: light dark; font-family: system-ui, sans-serif; }
body { min-height: 100svh; margin: 0; display: grid; place-items: center; background: Canvas; color: CanvasText; }
main { width: min(26rem, calc(100% - 3rem)); padding: 3rem 0; }
.brand { font-size: 1.5rem; font-weight: 750; margin-bottom: 3rem; }
.brand span { font-size: .875rem; font-weight: 400; }
h1 { font-size: 1.75rem; letter-spacing: -.025em; }
p { line-height: 1.6; }
a { display: inline-flex; padding: .85rem 1.4rem; margin: 1rem 0; border-radius: .6rem; background: CanvasText; color: Canvas; font-weight: 600; text-decoration: none; }
a:focus-visible { outline: 3px solid Highlight; outline-offset: 3px; }
[hidden] { display: none; }
.help { font-size: .875rem; opacity: .7; }