html { color-scheme: light dark; font-family: system-ui, sans-serif; }
body { margin: 0; min-height: 100dvh; display: grid; place-items: center; padding: 24px; box-sizing: border-box; background: Canvas; color: CanvasText; }
main { width: min(100%, 420px); overflow-wrap: anywhere; }
.brand { font-weight: 650; margin-bottom: 28px; }
h1 { font-size: 1.65rem; line-height: 1.25; }
p { line-height: 1.5; }
button { margin-top: 12px; min-height: 44px; padding: 11px 18px; border: 1px solid currentColor; border-radius: 6px; background: CanvasText; color: Canvas; font: inherit; cursor: pointer; }
button:disabled { opacity: .55; cursor: default; }
button:focus-visible { outline: 3px solid Highlight; outline-offset: 4px; }
#preview-status { min-height: 3em; }