:root{--ifm-orange:#ff6a00;--ifm-orange-light:#ff8f40;--ifm-blue:#3b82f6;--ifm-gray:#f5f5f5;--ifm-text:#333;--ifm-text-light:#666;--ifm-border:#e0e0e0;--ifm-white:#fff;--ifm-green:#2e7d32;--safe-bottom:env(safe-area-inset-bottom,0px)}*{box-sizing:border-box;margin:0;padding:0}html{overscroll-behavior-x:none;overflow-x:hidden}body{color:var(--ifm-text);overscroll-behavior:contain;-webkit-font-smoothing:antialiased;background:#f3f4f6;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:15px;overflow-x:hidden}.app{background:#fafafa;flex-direction:column;max-width:480px;min-height:100vh;margin:0 auto;display:flex}.app-header{color:#fff;text-align:center;z-index:100;background:linear-gradient(135deg,#1e293b,#334155);padding:12px 16px;position:sticky;top:0;box-shadow:0 1px 3px #0000001a}.app-header h1{letter-spacing:.5px;font-size:16px;font-weight:600}.app-main{-webkit-overflow-scrolling:touch;overscroll-behavior:contain;flex:1;padding:0 0 60px;overflow-y:auto}.icp-footer{text-align:center;padding:12px 0 4px}.icp-footer a{color:#94a3b8;font-size:12px;text-decoration:none}.icp-footer .police-beian{margin-left:10px}.icp-footer .police-beian img{vertical-align:-3px;width:auto;height:16px;margin-right:3px}.bottom-nav{width:100%;max-width:480px;padding-bottom:var(--safe-bottom);z-index:100;background:#fff;border-top:1px solid #e5e7eb;display:flex;position:fixed;bottom:0;left:50%;transform:translate(-50%);box-shadow:0 -1px 3px #0000000a}.nav-item{color:#9ca3af;touch-action:manipulation;flex-direction:column;flex:1;align-items:center;padding:8px 4px;font-size:11px;text-decoration:none;transition:all .2s;display:flex}.nav-item.active{color:var(--ifm-blue);background:#eff6ff;border-radius:12px;margin:4px;padding:4px}.nav-item.active .nav-label{font-weight:600}.nav-icon{margin-bottom:1px;font-size:20px}.nav-label{font-weight:500}.page{padding:16px}.page-title{color:var(--ifm-text);margin-bottom:16px;font-size:20px;font-weight:700}.search-bar{gap:8px;margin-bottom:12px;display:flex}.search-input{border:2px solid var(--ifm-border);border-radius:10px;outline:none;flex:1;padding:10px 14px;font-size:15px;transition:border-color .2s}.search-input:focus{border-color:var(--ifm-orange)}.btn{cursor:pointer;border:none;border-radius:10px;padding:10px 16px;font-size:14px;font-weight:600;transition:all .2s}.btn-primary{background:var(--ifm-orange);color:#fff}.btn-primary:active{background:#e05d00}.btn-outline{color:var(--ifm-orange);border:2px solid var(--ifm-orange);background:#fff}.btn-sm{padding:6px 12px;font-size:13px}.btn-block{width:100%}.card{cursor:pointer;background:#fff;border:1px solid #f0f0f0;border-radius:12px;margin-bottom:10px;padding:14px;transition:box-shadow .2s,transform .15s}.card:active{transform:scale(.99);box-shadow:0 2px 8px #00000014}.card-title{margin-bottom:4px;font-size:16px;font-weight:600}.card-subtitle{color:var(--ifm-text-light);font-size:13px}.card-row{justify-content:space-between;align-items:center;display:flex}.badge{border-radius:10px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}.badge-orange{color:var(--ifm-orange);background:#fff3e8}.badge-gray{color:#6b7280;background:#f3f4f6}.badge-green{color:var(--ifm-green);background:#e8f5e9}.chip-row{flex-wrap:wrap;gap:8px;margin-bottom:12px;display:flex}.chip{cursor:pointer;white-space:nowrap;background:#fff;border:1px solid #e5e7eb;border-radius:20px;padding:6px 14px;font-size:13px;transition:all .2s}.chip:hover{background:#f9fafb}.chip.active{background:var(--ifm-blue);color:#fff;border-color:var(--ifm-blue)}.spec-table{border-collapse:collapse;width:100%;font-size:14px}.spec-table tr{border-bottom:1px solid var(--ifm-border)}.spec-table td{vertical-align:top;padding:10px 8px}.spec-table td:first-child{color:var(--ifm-text-light);width:40%;font-size:13px}.spec-table td:last-child{font-weight:500}.chat-container{flex-direction:column;flex:1;min-height:0;display:flex}.chat-messages{flex:1;padding:12px 0;overflow-y:auto}.chat-msg{border-radius:16px;max-width:85%;margin-bottom:12px;padding:10px 14px;font-size:14px;line-height:1.55;box-shadow:0 1px 2px #0000000a}.chat-msg.user{background:var(--ifm-blue);color:#fff;border-bottom-right-radius:6px;margin-left:auto}.chat-msg.assistant{background:#fff;border:1px solid #f0f0f0;border-bottom-left-radius:6px;margin-right:auto}.chat-input-row{border-top:1px solid var(--ifm-border);gap:8px;padding:12px 0;display:flex}.chat-input{border:2px solid var(--ifm-border);border-radius:24px;outline:none;flex:1;padding:10px 14px;font-size:14px}.empty-state{text-align:center;color:var(--ifm-text-light);padding:48px 16px}.empty-state .empty-icon{margin-bottom:12px;font-size:48px}.empty-state p{font-size:14px}.section-title{color:var(--ifm-text);margin:16px 0 10px;font-size:16px;font-weight:700}.loading{text-align:center;color:var(--ifm-text-light);padding:20px;font-size:14px}.spinner{border:3px solid var(--ifm-border);border-top-color:var(--ifm-orange);border-radius:50%;width:24px;height:24px;animation:.8s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.back-btn{color:var(--ifm-orange);cursor:pointer;background:0 0;border:none;align-items:center;gap:4px;margin-bottom:8px;padding:8px 0;font-size:14px;font-weight:600;display:inline-flex}.typing-indicator{align-items:center;gap:3px;padding:8px 14px;display:inline-flex}.typing-dot{background:#bbb;border-radius:50%;width:7px;height:7px;animation:1.2s ease-in-out infinite typeBounce}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes typeBounce{0%,60%,to{opacity:.4;transform:translateY(0)}30%{opacity:1;transform:translateY(-6px)}}.status-banner{color:var(--ifm-text-light);border-bottom:1px solid var(--ifm-border);background:#fafafa;justify-content:center;align-items:center;gap:6px;padding:6px 16px;font-size:12px;display:flex}.status-dot{background:var(--ifm-orange);border-radius:50%;width:6px;height:6px;animation:1.5s ease-in-out infinite pulseDot}@keyframes pulseDot{0%,to{opacity:.3;transform:scale(.8)}50%{opacity:1;transform:scale(1.2)}}.quick-prompts{padding:8px 16px 4px}.quick-prompts-title{color:#999;margin-bottom:8px;font-size:13px}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-thumb{background:var(--ifm-border);border-radius:2px}.markdown-content{font-size:14px;line-height:1.7}.markdown-content h2{margin:12px 0 6px;font-size:17px}.markdown-content h3{margin:10px 0 4px;font-size:15px}.markdown-content ul,.markdown-content ol{margin:6px 0;padding-left:18px}.markdown-content li{margin-bottom:3px}.markdown-content strong{color:var(--ifm-orange)}.markdown-content p{margin:6px 0}.markdown-content code{background:#e8e8e8;border-radius:3px;padding:1px 5px;font-size:13px}.product-thumb{object-fit:contain;border:1px solid var(--ifm-border);background:#fff;border-radius:6px;flex-shrink:0}.product-thumb-chat{width:40px;height:40px}.product-thumb-list{width:60px;height:60px}.filter-panel{border:1px solid var(--ifm-border);background:#fafafa;border-radius:10px;margin-bottom:12px;padding:12px}.filter-group{margin-bottom:10px}.filter-group:last-child{margin-bottom:0}.filter-group-title{color:#999;text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;font-size:12px;font-weight:600}.filter-checkbox-chip{border:1px solid var(--ifm-border);color:#666;cursor:pointer;white-space:nowrap;background:#fff;border-radius:16px;padding:5px 12px;font-size:12px;transition:all .15s}.filter-checkbox-chip.active{background:var(--ifm-blue);color:#fff;border-color:var(--ifm-blue)}.filter-checkbox-chip:active{transform:scale(.96)}