:root {
  color-scheme: light;
  --cp-bg: #f7f4ef;
  --cp-bg-elevated: #fcfbf8;
  --cp-surface: #ffffff;
  --cp-surface-soft: #f5f5f5;
  --cp-border: #dedede;
  --cp-border-strong: #919191;
  --cp-text: #242424;
  --cp-text-muted: #5c5c5c;
  --cp-text-soft: #6f6f6f;
  --cp-accent: #b11f4b;
  --cp-accent-hover: #9a1a41;
  --cp-accent-soft: rgba(177, 31, 75, 0.08);
  --cp-accent-fg: #ffffff;
  --cp-success: #16a34a;
  --cp-danger: #dc2626;
  --cp-warning: #f59e0b;
  --cp-link: #0078d4;
  --cp-shadow: 0 18px 48px rgba(0, 0, 0, 0.12);
  --cp-overlay: rgba(255, 255, 255, 0.8);
  --cp-panel: rgba(255, 255, 255, 0.86);
  --cp-panel-strong: rgba(255, 255, 255, 0.96);
  --cp-sheen: rgba(255, 255, 255, 0.55);
  --cp-highlight: rgba(177, 31, 75, 0.12);
}
html[data-theme="dark"] {
  color-scheme: dark;
  --cp-bg: #3d3b3a;
  --cp-bg-elevated: #343231;
  --cp-surface: #292929;
  --cp-surface-soft: #2e2e2e;
  --cp-border: #474747;
  --cp-border-strong: #5f5f5f;
  --cp-text: #dedede;
  --cp-text-muted: #919191;
  --cp-text-soft: #b0b0b0;
  --cp-accent: #fd8ea1;
  --cp-accent-hover: #fb7b91;
  --cp-accent-soft: rgba(253, 142, 161, 0.14);
  --cp-accent-fg: #1a1a1a;
  --cp-success: #4ade80;
  --cp-danger: #f87171;
  --cp-warning: #fbbf24;
  --cp-link: #4da6ff;
  --cp-shadow: 0 18px 48px rgba(0, 0, 0, 0.32);
  --cp-overlay: rgba(41, 41, 41, 0.88);
  --cp-panel: rgba(41, 41, 41, 0.72);
  --cp-panel-strong: rgba(41, 41, 41, 0.96);
  --cp-sheen: rgba(255, 255, 255, 0.04);
  --cp-highlight: rgba(253, 142, 161, 0.12);
}
.mchs-agent,.mchs-agent *{box-sizing:border-box}
.mchs-agent[hidden]{display:none}
.mchs-agent{position:fixed;right:18px;bottom:82px;z-index:5000;width:min(470px,calc(100vw - 24px));height:min(720px,calc(100vh - 104px));display:grid;grid-template-rows:auto minmax(0,1fr) auto;background:var(--cp-surface);color:var(--cp-text);border:1px solid var(--cp-border);border-radius:16px;box-shadow:var(--cp-shadow);overflow:hidden;overflow-wrap:anywhere;font-family:"Segoe UI",Aptos,Calibri,-apple-system,BlinkMacSystemFont,sans-serif}
.mchs-agent>*,.mchs-agent>*>*{min-width:0}
.mchs-agent-head{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--cp-bg-elevated);border-bottom:1px solid var(--cp-border)}
.mchs-agent-mark{display:grid;width:44px;height:44px;flex:0 0 auto;place-items:center;border-radius:50%;background:var(--cp-accent);color:var(--cp-accent-fg);font-weight:900}
.mchs-agent-title{min-width:0;flex:1}.mchs-agent-title strong,.mchs-agent-title small{display:block}.mchs-agent-title strong{font-size:1.05rem}.mchs-agent-title small{margin-top:2px;color:var(--cp-text-soft);font-size:.78rem}
.mchs-agent-head-actions{display:flex;gap:6px}.mchs-agent-close,.mchs-agent-clear{display:inline-flex;min-width:44px;min-height:44px;align-items:center;justify-content:center;gap:4px;padding:7px 10px;border:1px solid var(--cp-border-strong);border-radius:.625rem;background:var(--cp-surface);color:var(--cp-text);font:800 .82rem/1 "Segoe UI",Aptos,Calibri,-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer}
.mchs-agent-log{overflow:auto;padding:16px;background:var(--cp-bg);scroll-behavior:smooth}
.mchs-agent-msg{max-width:94%;margin:0 0 12px;padding:12px 14px;border:1px solid var(--cp-border);border-radius:16px;background:var(--cp-surface);line-height:1.5;font-size:.93rem}
.mchs-agent-msg.user{margin-left:auto;border-color:var(--cp-accent);border-bottom-right-radius:.625rem;background:var(--cp-accent);color:var(--cp-accent-fg)}
.mchs-agent-msg.bot{border-bottom-left-radius:.625rem}.mchs-agent-msg p{margin:0 0 8px}.mchs-agent-msg p:last-child{margin-bottom:0}
.mchs-agent-evidence{margin-top:10px;padding-top:10px;border-top:1px solid var(--cp-border)}.mchs-agent-evidence>strong{display:block;margin-bottom:7px;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em}
.mchs-agent-sources,.mchs-agent-followups{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}
.mchs-agent-source,.mchs-agent-chip{display:inline-flex;min-height:44px;max-width:100%;align-items:center;padding:8px 11px;border:1px solid var(--cp-border-strong);border-radius:.625rem;background:var(--cp-surface);color:var(--cp-link);font:700 .79rem/1.25 "Segoe UI",Aptos,Calibri,-apple-system,BlinkMacSystemFont,sans-serif;text-align:left;text-decoration:none;cursor:pointer}
.mchs-agent-source{flex-direction:column;align-items:flex-start}.mchs-agent-source-title{display:block}.mchs-agent-source-meta{display:block;margin-top:3px;color:var(--cp-text-soft);font-size:.68rem;font-weight:600}
.mchs-agent-source:hover,.mchs-agent-chip:hover{border-color:var(--cp-accent);color:var(--cp-accent);background:var(--cp-accent-soft)}
.mchs-agent-paths{margin-top:10px;padding:10px;border:1px solid var(--cp-border);border-radius:.625rem;background:var(--cp-bg-elevated)}.mchs-agent-paths>strong{display:block;margin-bottom:7px;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em}.mchs-agent-paths>div{display:grid;gap:6px}.mchs-agent-paths a{display:flex;min-height:44px;align-items:center;padding:7px 9px;border-left:3px solid var(--cp-accent);background:var(--cp-surface);color:var(--cp-link);font-size:.78rem;font-weight:800;text-decoration:none}.mchs-agent-paths a:hover{background:var(--cp-accent-soft);color:var(--cp-accent)}
.mchs-agent-caveat{margin-top:10px!important;padding:8px 10px;border-left:3px solid var(--cp-warning);background:var(--cp-surface-soft);color:var(--cp-text-soft);font-size:.8rem}
.mchs-agent-answer-tools{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px;padding-top:10px;border-top:1px solid var(--cp-border)}.mchs-agent-answer-tools button{min-height:40px;padding:7px 10px;border:1px solid var(--cp-border-strong);border-radius:.625rem;background:var(--cp-surface);color:var(--cp-link);font:700 .75rem "Segoe UI",Aptos,Calibri,-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer}.mchs-agent-answer-tools button:hover{border-color:var(--cp-accent);color:var(--cp-accent)}.mchs-agent-answer-tools [role="status"]{align-self:center;color:var(--cp-text-muted);font-size:.72rem}
.mchs-agent-share-note{flex:1 0 100%;color:var(--cp-text-soft);font-size:.7rem;line-height:1.45}
.mchs-agent-mode{display:inline-flex;align-items:center;gap:6px;margin-bottom:8px;padding:4px 8px;border-radius:.625rem;background:var(--cp-accent-soft);color:var(--cp-accent);font-size:.72rem;font-weight:800}
.mchs-agent-controls{border:0;border-top:1px solid var(--cp-border);background:var(--cp-surface)}
.mchs-agent-controls-summary{display:flex;min-height:50px;align-items:center;gap:10px;padding:8px 12px;color:var(--cp-text);font-weight:800;cursor:pointer;list-style:none}
.mchs-agent-controls-summary::-webkit-details-marker{display:none}
.mchs-agent-controls-summary span{flex:1}.mchs-agent-controls-summary small{color:var(--cp-text-muted);font-size:.7rem;font-weight:600}
.mchs-agent-controls-summary::after{content:"+";display:grid;width:32px;height:32px;flex:0 0 auto;place-items:center;border:1px solid var(--cp-border-strong);border-radius:.625rem;background:var(--cp-surface-soft);color:var(--cp-accent);font-size:1.2rem;line-height:1}
.mchs-agent-controls[open] .mchs-agent-controls-summary{border-bottom:1px solid var(--cp-border)}
.mchs-agent-controls[open] .mchs-agent-controls-summary::after{content:"−"}
.mchs-agent-controls-summary:hover{background:var(--cp-accent-soft)}.mchs-agent-controls-summary:focus-visible{outline:3px solid var(--cp-highlight);outline-offset:-3px}
.mchs-agent-controls-body{background:var(--cp-surface)}
.mchs-agent-quick{display:flex;flex-wrap:wrap;gap:7px;overflow-x:visible;padding:10px 12px 0}.mchs-agent-quick .mchs-agent-chip{white-space:nowrap}
.mchs-agent-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;padding:12px}
.mchs-agent-input{width:100%;min-height:48px;padding:11px 12px;border:1px solid var(--cp-border-strong);border-radius:.625rem;background:var(--cp-surface);color:var(--cp-text);font:inherit}
.mchs-agent-input:focus{outline:3px solid var(--cp-highlight);border-color:var(--cp-accent)}
.mchs-agent-send{min-width:76px;min-height:48px;padding:9px 13px;border:1px solid var(--cp-accent);border-radius:.625rem;background:var(--cp-accent);color:var(--cp-accent-fg);font:800 .9rem "Segoe UI",Aptos,Calibri,-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer}.mchs-agent-send:hover{background:var(--cp-accent-hover)}
.mchs-agent-options{grid-column:1/-1;display:flex;justify-content:space-between;gap:10px;align-items:flex-start;flex-wrap:wrap}.mchs-agent-ai{display:flex;gap:7px;align-items:flex-start;color:var(--cp-text-muted);font-size:.74rem}.mchs-agent-ai input{margin-top:3px}.mchs-agent-ai span{max-width:34ch}
.mchs-agent-privacy{grid-column:1/-1;margin:0;color:var(--cp-text-muted);font-size:.7rem}.mchs-agent-status{color:var(--cp-text-muted);font-size:.72rem}
.mchs-agent-empty{padding:10px;border:1px solid var(--cp-border);border-radius:.625rem;background:var(--cp-surface-soft)}
.mchs-agent-open .site-utility-dock,.mchs-agent-open .nav-inner>.a11y-fab{visibility:hidden!important;pointer-events:none!important}
.museum-agent-launch-card{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(240px,.7fr);gap:24px;align-items:center}.museum-agent-topic-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.museum-agent-topic-list button{min-height:48px;padding:10px 12px;border:1px solid var(--cp-border);border-radius:.625rem;background:var(--cp-surface);color:var(--cp-text);font:inherit;font-weight:700;text-align:left;cursor:pointer}.museum-agent-topic-list button:hover{border-color:var(--cp-accent);color:var(--cp-accent)}
.museum-agent-launch-card button:disabled,.hero-cta button:disabled{cursor:wait;opacity:.72}
@media(max-width:700px){
  .mchs-agent{inset:8px;width:auto;height:auto;max-width:calc(100vw - 16px);max-height:calc(100dvh - 16px)}
  .mchs-agent-mark{display:none}.mchs-agent-title small{display:none}.mchs-agent-clear{padding:7px}.mchs-agent-msg{max-width:100%}
  .mchs-agent-form{grid-template-columns:1fr}.mchs-agent-send{width:100%}.mchs-agent-controls-summary small{display:none}.museum-agent-launch-card,.museum-agent-topic-list{grid-template-columns:1fr}
}
@media print{.mchs-agent{display:none!important}}