:root{--primary:#13866a;--primary-dark:#0e7058;--primary-soft:#e8f7f2;--violet:#13866a;--violet-soft:#e8f7f2}.brand-logo{width:42px;font-size:12px;background:linear-gradient(145deg,#151b28,#2c3b4f);box-shadow:0 6px 16px rgba(25,35,50,.22)}.btn-home{border-color:#1d1d1f;background:#1d1d1f;color:#fff}.btn-home:hover{background:#000;color:#fff}.ai-client-hidden{display:none!important}.msg-meta{display:none!important}.chat-layout{max-width:1240px}.message-list{min-height:420px}.composer textarea{font-size:14px}.source-box{font-size:12px}
@media(max-width:900px){.topbar-right{width:100%;justify-content:flex-start}.btn-home{margin-left:auto}.message-list{min-height:340px}}
@media(max-width:620px){.topbar{position:relative}.brand-text strong{font-size:13px}.brand-sub{font-size:11px}.topbar-right{display:grid;grid-template-columns:1fr 1fr}.topbar-right .btn{padding:0 9px;font-size:12px}.chat-layout{padding:8px}.side-panel{display:none}.message-list{max-height:calc(100vh - 310px);min-height:360px}.composer-hint{font-size:10px}}