:root { color-scheme: light; font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif; color: #162a3e; background: #f4f6f9; }
* { box-sizing: border-box; }
body { margin: 0; }
main { max-width: 960px; margin: 10vh auto; padding: 0 24px; }
.eyebrow { color: #517287; font-size: 14px; letter-spacing: .08em; }
h1 { font-size: clamp(28px, 5vw, 40px); margin: 12px 0; }
h2 { margin: 0 0 16px; font-size: 23px; }
p { line-height: 1.8; margin: 12px 0; }
header > p:last-child, section > p { color: #526579; }
.status { margin: 28px 0 20px; padding: 12px 16px; border: 1px solid #d5dfe9; border-radius: 10px; background: #eaf0f6; font-size: 14px; }
.status.ready { color: #19654a; background: #e5f5ee; }
.forms { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
section { min-width: 0; border: 1px solid #dce3eb; border-radius: 16px; padding: 28px; background: white; }
form { display: grid; gap: 12px; margin-top: 24px; }
label { font-size: 14px; }
.consent { display: flex; gap: 9px; align-items: flex-start; line-height: 1.7; }
.consent input { margin-top: 5px; }
input[type="text"] { width: 100%; padding: 13px; border: 1px solid #bfcbd8; border-radius: 8px; font: inherit; }
button { border: 0; border-radius: 8px; padding: 13px 18px; background: #17619a; color: white; font: inherit; cursor: pointer; }
button:hover:not(:disabled) { background: #104c7b; }
:disabled { cursor: not-allowed; opacity: .55; }
:focus-visible { outline: 3px solid #72b1db; outline-offset: 3px; }
#proof-panel { margin-top: 24px; border-top: 1px solid #e1e7ed; padding-top: 12px; }
#proof-code { display: block; font-size: 17px; overflow-wrap: anywhere; user-select: all; }
.hint, footer { font-size: 13px; color: #607183; line-height: 1.9; }
.result { min-height: 28px; overflow-wrap: anywhere; color: #19654a; }
.result.error { color: #ac3434; }
footer { margin-top: 24px; }
[hidden] { display: none !important; }
@media (max-width: 640px) { main { margin: 40px auto; padding: 0 18px; } .forms { grid-template-columns: 1fr; } section { padding: 22px; } }