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/* Follow the OS preference live, before first paint; no persisted override. */
:root{color-scheme:light dark}
@media(prefers-color-scheme:dark){
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 .skip,.agent,.workflow-shell,.steps button[aria-selected=true],.decision{background:#202421}
 .agent{border-color:var(--line);box-shadow:none}
 .avatar{border-color:#78787a}
 .button,.maestro,.map-source{background:#1dcf5c;color:#fff}
 .button:hover{background:#17ab4d}
 .route.pale,.route.thin{stroke:#128a3d}
 .premise,.workflow-sidebar,.organization{background:#171918}
 .message{background:#202421}
 .message.assistant{background:#0a451f;color:#ffffff}
 .decision-options span{background:#0a451f;border-color:#78787a;color:#ffffff}
 .oracle-section{background:#171918}
 .knowledge-map{background:#000000}
 .map-branches>span,.map-engineering>span,.map-engineering>div>span{background:#202421;border-color:#78787a}
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 .pilot{background:#0a451f}
 .milestones{border-color:#128a3d}
 .button.light{background:#ffffff;color:#0a451f}
 .button.light:hover{background:#c4c9cc}
}

/* iCred manual pp. 11–12: green/black identity; orange only for calls to action.
   Neutral surface tints preserve contrast. Layout and logo geometry unchanged. */
:root{--brand:#1dcf5c;--cta:#ff8b00;--cta-hover:#fc9c29}
.button,.button.light{background:var(--cta);color:#000}
.button:hover,.button.light:hover{background:var(--cta-hover)}
.maestro,.map-source{background:var(--brand);color:#000}
.maestro div span{color:#0a451f}
.route{stroke:var(--brand)}