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h2{margin:0;font-size:1.15rem}.chat-main-header-info p{color:var(--text-muted);margin-top:2px;font-size:.8rem}.chat-messages{background:var(--bg-canvas);flex-direction:column;flex:1;gap:14px;padding:24px;display:flex;overflow-y:auto}.chat-bubble{border-radius:var(--radius-lg);white-space:pre-wrap;word-break:break-word;max-width:72%;box-shadow:var(--shadow-xs);flex-direction:column;gap:6px;padding:12px 16px;animation:.15s ease-out fadeIn;display:flex}.chat-bubble.user{background:var(--bg-surface);border:1px solid var(--border-default);color:var(--text-primary);border-bottom-left-radius:4px;align-self:flex-start}.chat-bubble.operator{background:var(--primary-600);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.chat-bubble.operator span{color:#fff}.chat-bubble small{opacity:.75;align-self:flex-end;font-size:.7rem}.chat-bubble.operator small{color:#ffffffd9}.chat-composer{background:var(--bg-surface);border-top:1px solid var(--border-default);align-items:flex-end;gap:12px;padding:16px 24px;display:flex}.chat-composer textarea{border-radius:var(--radius-lg);flex:1;min-height:48px;max-height:140px;padding:12px 16px}.chat-composer-hint{color:var(--text-muted);margin-top:4px;font-size:.72rem}.tw-auth-shell{background:radial-gradient(circle at 50% 30%, var(--primary-subtle), var(--bg-canvas) 70%);place-items:center;min-height:100vh;padding:24px;display:grid}.tw-auth-card{border:1px solid var(--border-default);border-radius:var(--radius-2xl);background:var(--bg-surface);width:min(420px,100%);box-shadow:var(--shadow-xl);flex-direction:column;gap:20px;padding:40px;display:flex}.tw-auth-brand{color:var(--primary-600);align-items:center;gap:10px;font-size:1.25rem;font-weight:800;display:flex}.tw-auth-card h1{margin:0;font-size:1.6rem}.password-panel{border:1px solid var(--warning-border);border-radius:var(--radius-xl);background:var(--warning-bg);flex-direction:column;gap:16px;max-width:580px;margin-top:20px;padding:24px;display:flex}.password-panel .notice{margin-bottom:0}@media (width<=768px){.tw-sidebar{width:260px;transform:translate(-100%)}.tw-sidebar.tw-mobile-open{transform:translate(0)}.tw-main,.tw-collapsed .tw-main{margin-left:0}.tw-backdrop{z-index:35;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);box-shadow:none;cursor:pointer;background:#0b0f1999;border:0;padding:0;display:block;position:fixed;inset:0}.tw-topbar{padding:0 16px}.tw-content{padding:20px 16px 48px}.chat-workspace{grid-template-columns:1fr;height:calc(100vh - 140px)}.chat-sidebar{border-right:0;border-bottom:1px solid var(--border-default);max-height:280px}.chat-bubble{max-width:88%}.toolbar{flex-direction:column;align-items:stretch}.search-input-wrapper{min-width:100%}}