.proof-chain{padding:48px 0;border-top:1px solid #d5d8df}.proof-chain h2{font-size:clamp(30px,4vw,48px);line-height:1.12;letter-spacing:-.04em;max-width:850px}.proof-chain p{font-size:17px;line-height:1.6;max-width:850px}.proof-lead{color:#515a67}.proof-step{margin:28px 0 16px;max-width:850px}.proof-step h3{font-size:23px;line-height:1.3}.proof-table{overflow-x:auto;margin:20px 0}.proof-table table{border-collapse:collapse;width:100%;font-size:16px;line-height:1.5}.proof-table caption{text-align:left;font-weight:600;padding:12px 0}.proof-table th,.proof-table td{text-align:left;vertical-align:top;padding:14px;border-bottom:1px solid #d5d8df}.proof-table th{background:#eeeff6}.proof-chain details{background:#eeeff6;padding:20px;border-radius:12px;margin:24px 0;max-width:900px}.proof-chain summary{cursor:pointer;font-size:17px;font-weight:600;min-height:44px}.proof-chain li{font-size:16px;line-height:1.6;margin:10px 0}.proof-actions{display:flex;gap:14px 24px;flex-wrap:wrap;align-items:center;margin-top:22px}.proof-actions button{font:inherit;min-height:44px;cursor:pointer}.proof-actions button:not(.button){background:none;border:0;text-decoration:underline;color:#505661}.proof-simulation{max-width:850px;padding:24px;background:#eeeff6;border-radius:14px}.proof-simulation label{display:block;font-weight:600;margin:14px 0 8px}.proof-simulation textarea{width:100%;box-sizing:border-box;font:16px/1.5 inherit;min-height:105px;padding:12px;border:1px solid #9ca5b5;border-radius:8px}.proof-simulation [aria-invalid=true]{border:2px solid #a72b2b}.proof-simulation button:disabled{opacity:.65;cursor:default}.proof-simulation [data-proof-status]{white-space:pre-line}.proof-chain :focus-visible{outline:3px solid #343fcc;outline-offset:3px}@media(max-width:760px){.proof-chain{padding:32px 0}.proof-chain p{font-size:16px}.proof-table th,.proof-table td{padding:10px;font-size:14px}.proof-actions{align-items:stretch;flex-direction:column}.proof-actions .button{font-size:15px;justify-content:center}.proof-simulation{padding:18px}.proof-chain details{padding:16px}}