:root{--bg:#fff;--bg-sidebar:#f9f9f9;--bg-hover:#ececec;--bg-user-bubble:#f4f4f4;--bg-card:#fff;--text:#0d0d0d;--text-secondary:#5d5d5d;--text-muted:#8f8f8f;--border:#e6e6e6;--border-strong:#d9d9d9;--accent:#1e2a47;--accent-fg:#fcfbf8;--gold:#c29b5e;--danger:#b91c1c;--radius-card:16px;--radius-composer:28px;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Inter", sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, 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6px!important;font-size:15px!important;font-weight:700!important}.msg-assistant h1:first-child,.msg-assistant h2:first-child,.msg-assistant h3:first-child,.msg-assistant h4:first-child{margin-top:0!important}.interaction-card{border:1px solid var(--border);border-radius:var(--radius-card);background:#fafafa;padding:16px 18px;font-size:13.5px;transition:border-color .15s,box-shadow .15s,opacity .15s}.interaction-card.is-active{background:var(--bg);border-color:var(--border-strong);box-shadow:0 0 0 1px var(--border-strong), 0 4px 18px #0000000f}.interaction-card.is-settled{opacity:.62}.lane-wrap{min-width:0}.thinking-row{color:var(--text-muted);align-items:center;gap:8px;font-size:13.5px;display:inline-flex}.thinking-row .shimmer{background:linear-gradient(90deg, var(--text-muted) 40%, var(--text) 50%, var(--text-muted) 60%);color:#0000;background-size:200% 100%;-webkit-background-clip:text;background-clip:text;animation:1.8s linear infinite shimmer}@keyframes 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#efcaca;border-radius:10px;padding:10px 14px;font-size:13px;line-height:1.5}.composer-wrap{padding:8px 20px 18px}.composer{max-width:var(--thread-width);border:1px solid var(--border-strong);border-radius:var(--radius-composer);background:var(--bg);align-items:flex-end;gap:8px;margin:0 auto;padding:8px 8px 8px 10px;transition:border-color .12s;display:flex;box-shadow:0 2px 14px #0000000a}.composer:focus-within{border-color:#b9b9b9}.composer textarea{resize:none;max-height:160px;color:var(--text);background:0 0;border:none;outline:none;flex:1;padding:6px 0;font-size:15px;line-height:1.5}.composer textarea::placeholder{color:var(--text-muted)}.composer textarea:disabled{cursor:not-allowed}.send-btn{background:var(--accent);width:36px;height:36px;color:var(--accent-fg);cursor:pointer;border:none;border-radius:50%;flex-shrink:0;place-items:center;transition:opacity .12s;display:grid}.send-btn:disabled{opacity:.25;cursor:default}.clip-btn{width:36px;height:36px;color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:50%;flex-shrink:0;place-items:center;transition:background .12s,color .12s;display:grid}.clip-btn:hover:not(:disabled){background:var(--bg-hover);color:var(--text)}.clip-btn:disabled{opacity:.3;cursor:default}.composer-hint{max-width:var(--thread-width);text-align:center;color:var(--text-muted);margin:8px auto 0;font-size:11.5px}.login-page{background:var(--bg);place-items:center;height:100%;padding:24px;display:grid}.login-card{text-align:center;gap:14px;width:100%;max-width:360px;display:grid}.login-card .brand-dot{background:var(--accent);width:44px;height:44px;color:var(--accent-fg);border-radius:13px;place-items:center;margin:0 auto 4px;font-size:20px;font-weight:800;display:grid}.login-card h1{letter-spacing:-.02em;margin:0;font-size:22px}.login-card .sub{color:var(--text-muted);margin:0 0 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