body { font: 17px/1.5 system-ui, sans-serif; color: #172333; background: #f5f7fa; margin: 0; }
main { max-width: 650px; margin: 2rem auto; padding: 1.25rem; }
label { display: block; margin: 1rem 0; }
input, select, button { font: inherit; padding: .65rem; max-width: 100%; box-sizing: border-box; }
select, input[type=file] { display: block; width: 100%; }
button { background: #153d76; color: white; border: 0; border-radius: .4rem; cursor: pointer; }
button:disabled { opacity: .5; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; font: .85rem/1.5 monospace; }
.notice { padding: 1rem; background: #fff0c2; border-radius: .4rem; }
[hidden] { display: none !important; }