/* Scene and conversation form separate pages while preserving the message list. */
html[data-layout="spread"] {--radius:3px;--radius-lg:6px;--shadow:none;--shadow-sm:none}
html[data-layout="spread"] .chat-container {max-width:1260px;background:var(--bg-card);display:grid;grid-template-columns:minmax(240px,.8fr) minmax(0,1.25fr);grid-template-rows:auto auto auto minmax(0,1fr) auto}
html[data-layout="spread"] .chat-header,html[data-layout="spread"] .agent-status-banner,html[data-layout="spread"] .summary-banner,html[data-layout="spread"] .dm-banner,html[data-layout="spread"] .input-area {grid-column:1/-1}
html[data-layout="spread"] .chat-header {grid-row:1}
html[data-layout="spread"] .agent-status-banner,html[data-layout="spread"] .dm-banner {grid-row:2}
html[data-layout="spread"] .summary-banner {grid-row:3}
html[data-layout="spread"] .messages-area {grid-column:2;grid-row:4;padding:28px}
html[data-layout="spread"] .input-area {grid-row:5}
html[data-layout="spread"] .skin-scene-page {grid-column:1;grid-row:4;background:var(--bg-tertiary);padding:36px 28px;overflow-y:auto;border-right:1px solid var(--border)}
html[data-layout="spread"] .skin-scene-page h2 {font-family:Georgia,'Noto Serif SC',serif;font-size:clamp(1.8rem,3.5vw,3.2rem);line-height:1.4;margin:36px 0;overflow-wrap:anywhere}
html[data-layout="spread"] .skin-scene-copy {line-height:2;color:var(--text-secondary);white-space:pre-wrap}
html[data-layout="spread"] .msg.ai {padding-top:12px;border-top:1px solid var(--border-light)}
html[data-layout="spread"] .msg.ai .bubble {border:0;background:transparent;max-width:100%;padding:4px}
html[data-layout="spread"] .workspace-rooms {display:none}
@media(max-width:767px) {
 html[data-layout="spread"] .chat-container {display:flex}
 html[data-layout="spread"] .skin-scene-page {display:none;position:absolute;inset:100px 0 90px;z-index:5;padding:24px}
 html[data-layout="spread"] .skin-scene-visible .skin-scene-page {display:block}
 html[data-layout="spread"] .skin-scene-visible .messages-area {visibility:hidden}
 html[data-layout="spread"] .messages-area {padding:18px}
}