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#0000004d;border-radius:20px;justify-content:center;align-items:center;margin:0 auto 20px;font-size:36px;display:flex}.welcome-title{color:var(--text-primary);margin-bottom:12px;font-size:26px;font-weight:700;line-height:1.3}.welcome-title span{background:linear-gradient(135deg, var(--primary-light), var(--accent-light));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.welcome-desc{color:var(--text-secondary);font-size:14px;line-height:1.7}.quick-questions{width:100%;max-width:640px}.quick-questions-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:.8px;text-align:center;margin-bottom:12px;font-size:12px;font-weight:600}.quick-questions-grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.quick-question-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);text-align:left;align-items:flex-start;gap:10px;padding:14px 16px;font-family:inherit;display:flex}.quick-question-card:hover{background:var(--bg-card-hover);border-color:var(--border);box-shadow:var(--shadow-card);transform:translateY(-2px)}.quick-question-card:active{transform:translateY(0)}.qq-icon{flex-shrink:0;margin-top:1px;font-size:18px}.qq-text{color:var(--text-secondary);font-size:13px;line-height:1.5}.message{gap:12px;animation:.3s fadeInUp;display:flex}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{flex-direction:row-reverse}.message-avatar{border-radius:var(--radius-full);flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;margin-top:2px;font-size:16px;display:flex}.message.assistant .message-avatar{background:linear-gradient(135deg, var(--primary), var(--accent));box-shadow:0 0 10px var(--primary-glow)}.message.user .message-avatar{background:var(--bg-user-bubble);color:var(--text-primary);border:1px solid #1a6eff4d}.message-content{flex-direction:column;gap:4px;max-width:72%;display:flex}.message.user .message-content{align-items:flex-end}.message-bubble{border-radius:var(--radius-lg);word-break:break-word;padding:12px 16px;font-size:14px;line-height:1.7}.message.assistant .message-bubble{background:var(--bg-bot-bubble);border:1px solid var(--border-subtle);color:var(--text-primary);border-top-left-radius:4px}.message.user .message-bubble{background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;box-shadow:0 2px 12px var(--primary-glow);border-top-right-radius:4px}.message-time{color:var(--text-muted);padding:0 4px;font-size:11px}.message.assistant .message-bubble strong{color:var(--text-accent);font-weight:600}.message.assistant .message-bubble ul,.message.assistant .message-bubble ol{margin:6px 0;padding-left:18px}.message.assistant .message-bubble li{margin:3px 0}.typing-indicator{background:var(--bg-bot-bubble);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);border-top-left-radius:4px;align-items:center;gap:4px;width:fit-content;padding:14px 16px;display:flex}.typing-dot{background:var(--primary-light);border-radius:50%;width:7px;height:7px;animation:1.2s ease-in-out infinite typingBounce}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes typingBounce{0%,60%,to{opacity:.5;transform:translateY(0)}30%{opacity:1;transform:translateY(-6px)}}.disclaimer{border-radius:var(--radius-sm);color:#ffb400b3;background:#ffb4000f;border:1px solid #ffb40026;align-items:center;gap:6px;max-width:72%;padding:8px 12px;font-size:11px;display:flex}.message.assistant .disclaimer{margin-top:4px}.input-area{background:var(--bg-surface);border-top:1px solid var(--border-subtle);flex-shrink:0;padding:16px 28px 20px}.input-wrapper{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-xl);transition:var(--transition);box-shadow:var(--shadow-input);align-items:flex-end;gap:10px;padding:10px 12px 10px 18px;display:flex}.input-wrapper:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow), var(--shadow-input)}.chat-input{color:var(--text-primary);resize:none;background:0 0;border:none;outline:none;flex:1;min-height:22px;max-height:120px;padding:2px 0;font-family:inherit;font-size:14px;line-height:1.5}.chat-input::placeholder{color:var(--text-muted)}.send-btn{background:linear-gradient(135deg, var(--primary), var(--primary-dark));border-radius:var(--radius-full);color:#fff;cursor:pointer;width:36px;height:36px;transition:var(--transition);box-shadow:0 2px 8px var(--primary-glow);border:none;flex-shrink:0;justify-content:center;align-items:center;display:flex}.send-btn:hover:not(:disabled){background:linear-gradient(135deg, var(--primary-light), var(--primary));box-shadow:0 4px 16px var(--primary-glow);transform:scale(1.05)}.send-btn:disabled{opacity:.4;cursor:not-allowed;transform:none}.send-btn svg{width:16px;height:16px}.input-hint{text-align:center;color:var(--text-muted);margin-top:10px;font-size:11px}.input-hint a{color:var(--text-muted);text-decoration:none}.error-bubble{border-radius:var(--radius-md);color:#ff8080;background:#ff505014;border:1px solid #ff505033;align-items:center;gap:8px;max-width:72%;padding:10px 14px;font-size:13px;display:flex}.sidebar-section::-webkit-scrollbar{width:3px}.sidebar-section::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}@media (width<=768px){.sidebar{display:none}.chat-area{flex-direction:column;height:100%;display:flex;overflow:hidden}.chat-header{padding:10px 16px;padding-top:calc(10px + env(safe-area-inset-top));flex-shrink:0}.welcome-screen{-webkit-overflow-scrolling:touch;justify-content:flex-start;gap:20px;padding:24px 16px;overflow-y:auto}.welcome-icon{width:56px;height:56px;font-size:28px}.welcome-title{font-size:20px}.messages-container{-webkit-overflow-scrolling:touch;flex:1;padding:12px 16px;overflow-y:auto}.input-area{padding:10px 12px 12px;padding-bottom:calc(12px + env(safe-area-inset-bottom));flex-shrink:0}.quick-questions-grid{grid-template-columns:1fr}.message-content{max-width:88%}.input-hint{margin-top:6px;font-size:10px}}