:root{color-scheme:dark;font-family:MiSans,-apple-system,Segoe UI,Roboto,Helvetica Neue,sans-serif;line-height:1.5;--mi-orange: #FF6900;--mi-orange-light: #FF8C38;--mi-bg: #0a0a0a;--mi-surface: #1a1a1a;--mi-surface-2: #222222;--mi-border: rgba(255, 255, 255, .08);--mi-text: #fafafa;--mi-text-secondary: rgba(255, 255, 255, .55);--mi-radius: 16px}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:var(--mi-bg);color:var(--mi-text)}.app{display:flex;flex-direction:column;height:100vh;max-width:800px;margin:0 auto}.header{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--mi-border);background:var(--mi-bg);position:sticky;top:0;z-index:10}.logo-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--mi-orange),var(--mi-orange-light));display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;color:#fff;flex-shrink:0;box-shadow:0 2px 12px #ff69004d}.header-info{display:flex;flex-direction:column}.header-title{font-size:18px;font-weight:700;letter-spacing:-.01em;background:linear-gradient(135deg,var(--mi-orange),var(--mi-orange-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-subtitle{font-size:12px;color:var(--mi-text-secondary)}.status-dot{width:8px;height:8px;border-radius:50%;background:#22c55e;display:inline-block;margin-right:4px;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.chat-area{flex:1;overflow-y:auto;padding:24px 20px;display:flex;flex-direction:column;gap:20px;scroll-behavior:smooth}.chat-area::-webkit-scrollbar{width:4px}.chat-area::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}.welcome{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;text-align:center;padding:40px 20px}.welcome-logo{width:80px;height:80px;border-radius:24px;background:linear-gradient(135deg,var(--mi-orange),var(--mi-orange-light));display:flex;align-items:center;justify-content:center;font-weight:900;font-size:36px;color:#fff;box-shadow:0 8px 32px #ff690040;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.welcome h2{font-size:28px;font-weight:700;letter-spacing:-.02em;background:linear-gradient(135deg,#fff,#ffffffb3);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.welcome p{color:var(--mi-text-secondary);font-size:15px;max-width:400px;line-height:1.6}.suggestions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:8px}.suggestion-chip{background:var(--mi-surface);border:1px solid var(--mi-border);color:var(--mi-text);padding:10px 18px;border-radius:24px;font-size:13px;cursor:pointer;transition:all .2s ease;font-family:inherit}.suggestion-chip:hover{background:var(--mi-surface-2);border-color:var(--mi-orange);color:var(--mi-orange);transform:translateY(-1px)}.message{display:flex;gap:10px;max-width:85%;animation:fadeUp .3s ease}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message.user{align-self:flex-end;flex-direction:row-reverse}.message-avatar{width:32px;height:32px;border-radius:10px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}.message.assistant .message-avatar{background:linear-gradient(135deg,var(--mi-orange),var(--mi-orange-light));color:#fff}.message.user .message-avatar{background:var(--mi-surface-2);color:var(--mi-text-secondary);border:1px solid var(--mi-border)}.message-content{padding:12px 16px;border-radius:var(--mi-radius);font-size:14px;line-height:1.65}.message.assistant .message-content{background:var(--mi-surface);border:1px solid var(--mi-border);border-top-left-radius:4px}.message.user .message-content{background:linear-gradient(135deg,var(--mi-orange),var(--mi-orange-light));color:#fff;border-top-right-radius:4px}.typing-indicator{display:flex;gap:4px;padding:4px 0}.typing-indicator span{width:6px;height:6px;border-radius:50%;background:var(--mi-text-secondary);animation:typing 1.4s ease-in-out infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,to{opacity:.3;transform:translateY(0)}50%{opacity:1;transform:translateY(-4px)}}.input-area{padding:16px 20px 20px;border-top:1px solid var(--mi-border);background:var(--mi-bg)}.input-wrapper{display:flex;align-items:flex-end;gap:10px;background:var(--mi-surface);border:1px solid var(--mi-border);border-radius:24px;padding:8px 8px 8px 20px;transition:border-color .2s}.input-wrapper:focus-within{border-color:var(--mi-orange);box-shadow:0 0 0 3px #ff69001a}.input-wrapper textarea{flex:1;background:transparent;border:none;outline:none;color:var(--mi-text);font-size:14px;font-family:inherit;line-height:1.5;resize:none;max-height:120px;padding:6px 0}.input-wrapper textarea::placeholder{color:var(--mi-text-secondary)}.send-btn{width:36px;height:36px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--mi-orange),var(--mi-orange-light));color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}.send-btn:hover:not(:disabled){transform:scale(1.05);box-shadow:0 4px 16px #ff69004d}.send-btn:disabled{opacity:.4;cursor:not-allowed}.send-btn svg{width:18px;height:18px}.footer-note{text-align:center;font-size:11px;color:var(--mi-text-secondary);margin-top:8px;opacity:.6}@media(max-width:600px){.chat-area{padding:16px 12px}.message{max-width:92%}.welcome h2{font-size:22px}.suggestions{gap:8px}.suggestion-chip{font-size:12px;padding:8px 14px}}