*{margin:0;padding:0;box-sizing:border-box}:root{--theme-orange: #FF6B00;--theme-blue: #1890FF;--theme-gray: #4A4A4A;--bg-color: #F5F7FA;--card-bg: #FFFFFF;--risk-high: #FF3B30;--risk-high-bg: #FFEBE9;--risk-mid: #FF9500;--risk-mid-bg: #FFF4E5;--risk-low: #34C759;--risk-low-bg: #EAF9EE;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-400: #9ca3af;--gray-600: #4b5563;--gray-800: #1f2937;--radius-lg: 16px;--radius-md: 12px;--radius-sm: 8px;--safe-bottom: env(safe-area-inset-bottom, 20px)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:#e2e8f0;color:var(--gray-800);-webkit-font-smoothing:antialiased;overscroll-behavior:none}.app{display:flex;flex-direction:column;height:100dvh;max-width:480px;margin:0 auto;background:var(--bg-color);position:relative;box-shadow:0 0 20px #0000001a}.app-header{background:var(--theme-orange);color:#fff;padding:16px;text-align:center;flex-shrink:0;box-shadow:0 2px 4px #0000001a;z-index:10}.app-header h1{font-size:18px;font-weight:600;letter-spacing:.5px}.chat-area{flex:1;overflow-y:auto;padding:16px 16px 20px;-webkit-overflow-scrolling:touch;scroll-behavior:smooth}.quick-actions-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:24px}.quick-action-card{background:var(--card-bg);border-radius:var(--radius-md);padding:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;box-shadow:0 2px 8px #0000000d;cursor:pointer;border:1px solid transparent;transition:all .2s ease}.quick-action-card:active{transform:scale(.98);border-color:var(--theme-orange);background:#fff8f3}.quick-action-icon{font-size:28px}.quick-action-label{font-size:14px;font-weight:600;color:var(--gray-800)}.bubble{display:flex;gap:12px;margin-bottom:20px;width:100%}.bubble-user{flex-direction:row-reverse}.bubble-avatar{width:36px;height:36px;border-radius:8px;background:var(--theme-orange);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;box-shadow:0 2px 4px #ff6b0033}.bubble-user .bubble-avatar{background:var(--theme-blue);box-shadow:0 2px 4px #1890ff33}.bubble-body{max-width:85%}.bubble-user .bubble-body{background:var(--theme-blue);color:#fff;border-radius:var(--radius-md) 4px var(--radius-md) var(--radius-md);padding:12px 16px;box-shadow:0 2px 6px #00000014}.bubble-assistant .bubble-body{background:var(--card-bg);border-radius:4px var(--radius-md) var(--radius-md) var(--radius-md);padding:16px;box-shadow:0 2px 10px #0000000d;border:1px solid var(--gray-200);width:100%}.bubble-content{font-size:14px;line-height:1.6;color:var(--gray-800);word-break:break-word}.bubble-content h2{font-size:16px;color:var(--theme-gray);margin:16px 0 8px;padding-bottom:6px;border-bottom:1px solid var(--gray-200);display:flex;align-items:center}.bubble-content h2:before{content:"";display:inline-block;width:4px;height:16px;background:var(--theme-orange);margin-right:8px;border-radius:2px}.bubble-content h3{font-size:15px;margin:12px 0 6px;color:var(--gray-800);font-weight:600}.bubble-content hr{border:none;border-top:1px dashed var(--gray-200);margin:16px 0}.bubble-content strong{color:#000;font-weight:600}.risk-badge{display:inline-block;font-weight:600;padding:2px 8px;border-radius:4px;font-size:13px;margin:0 2px}.risk-high{background:var(--risk-high-bg);color:var(--risk-high);border:1px solid rgba(255,59,48,.2)}.risk-mid{background:var(--risk-mid-bg);color:var(--risk-mid);border:1px solid rgba(255,149,0,.2)}.risk-low{background:var(--risk-low-bg);color:var(--risk-low);border:1px solid rgba(52,199,89,.2)}.bubble-images{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.bubble-images img{width:80px;height:80px;object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--gray-200)}.input-area-wrapper{background:#fff;border-top:1px solid var(--gray-200);box-shadow:0 -2px 10px #00000008;padding:12px 16px calc(12px + var(--safe-bottom));flex-shrink:0;z-index:10}.uploaded-images-container{display:flex;flex-wrap:nowrap;overflow-x:auto;gap:12px;margin-bottom:12px;padding-bottom:4px}.input-row{display:flex;align-items:flex-end;gap:12px;background:var(--gray-50);border-radius:24px;padding:6px 6px 6px 16px;border:1px solid var(--gray-200);transition:border-color .2s}.input-row:focus-within{border-color:var(--theme-orange);background:#fff}.text-input{flex:1;border:none;background:transparent;padding:10px 0;font-size:15px;font-family:inherit;resize:none;outline:none;line-height:1.5;max-height:120px;color:var(--gray-800)}.action-btns{display:flex;align-items:center;gap:6px;padding-bottom:4px}.cam-btn{background:none;border:none;font-size:24px;color:var(--gray-600);cursor:pointer;display:flex;align-items:center;justify-content:center;padding:4px;transition:color .2s}.cam-btn:active{color:var(--theme-orange)}.voice-btn{background:none;border:none;font-size:22px;color:var(--gray-600);cursor:pointer;display:flex;align-items:center;justify-content:center;padding:4px}.send-btn{background:var(--theme-orange);color:#fff;border:none;border-radius:20px;padding:8px 16px;font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap;display:flex;align-items:center;justify-content:center;height:36px;box-shadow:0 2px 6px #ff6b004d}.send-btn:disabled{background:var(--gray-400);box-shadow:none;cursor:not-allowed}.image-preview{position:relative;width:64px;height:64px;flex-shrink:0}.image-preview img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--gray-200)}.image-remove{position:absolute;top:-6px;right:-6px;width:22px;height:22px;border-radius:50%;border:none;background:var(--risk-high);color:#fff;font-size:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 4px #0003}.typing-dot{display:inline-block;width:6px;height:6px;background:var(--theme-orange);border-radius:50%;margin:0 2px;animation:typing 1.4s infinite ease-in-out both}.typing-dot:nth-child(1){animation-delay:-.32s}.typing-dot:nth-child(2){animation-delay:-.16s}@keyframes typing{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.bubble-content table{width:100%;border-collapse:collapse;margin:12px 0;font-size:13px}.bubble-content th,.bubble-content td{border:1px solid var(--gray-200);padding:8px;text-align:left}.bubble-content th{background:var(--gray-50);font-weight:600}