:root{--primary: #1677ff;--primary-light: #e6f4ff;--success: #52c41a;--warning: #faad14;--danger: #ff4d4f;--text: #333;--text-secondary: #666;--text-hint: #999;--bg: #f5f5f5;--bg-white: #fff;--border: #e8e8e8;--radius: 12px;--radius-sm: 8px;--shadow: 0 2px 8px rgba(0,0,0,.06)}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;color:var(--text);background:var(--bg);min-height:100vh;overflow-x:hidden}#root{min-height:100vh;display:flex;flex-direction:column}.page{flex:1;padding:16px 16px 24px;max-width:480px;margin:0 auto;width:100%}.page-header{padding:16px 0;display:flex;align-items:center;gap:12px}.page-title{font-size:20px;font-weight:600}.card{background:var(--bg-white);border-radius:var(--radius);padding:16px;margin-bottom:12px;box-shadow:var(--shadow)}.card-title{font-size:15px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px}.card-title .icon{width:24px;height:24px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:14px}.form-group{margin-bottom:12px}.form-label{font-size:13px;color:var(--text-secondary);margin-bottom:6px;display:block}.form-input{width:100%;height:48px;padding:0 14px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:16px;background:var(--bg-white);color:var(--text);outline:none;transition:border-color .2s}.form-input:focus{border-color:var(--primary)}.form-input-small{height:40px;font-size:14px}.form-row{display:flex;gap:12px}.form-row>*{flex:1}.btn{height:48px;padding:0 24px;border-radius:var(--radius-sm);font-size:16px;font-weight:500;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:all .2s;width:100%}.btn-primary{background:var(--primary);color:#fff}.btn-primary:active{background:#0958d9}.btn-secondary{background:var(--primary-light);color:var(--primary)}.btn-danger{background:#fff1f0;color:var(--danger)}.btn-sm{height:36px;padding:0 14px;font-size:13px}.wire-type-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.wire-type-btn{height:72px;border:2px solid var(--border);border-radius:var(--radius);background:var(--bg-white);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s}.wire-type-btn .emoji{font-size:24px}.wire-type-btn.active{border-color:var(--primary);background:var(--primary-light);color:var(--primary)}.wire-type-btn:active{transform:scale(.96)}.mode-switch{display:flex;background:var(--bg);border-radius:var(--radius-sm);padding:3px;margin-bottom:16px}.mode-btn{flex:1;height:40px;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;background:transparent;color:var(--text-secondary);transition:all .2s}.mode-btn.active{background:var(--bg-white);color:var(--primary);box-shadow:0 1px 4px #0000001a}.spec-list{display:flex;flex-wrap:wrap;gap:8px}.spec-chip{padding:8px 14px;border:1px solid var(--border);border-radius:20px;font-size:13px;background:var(--bg-white);cursor:pointer;transition:all .2s;white-space:nowrap}.spec-chip.active{border-color:var(--primary);background:var(--primary-light);color:var(--primary);font-weight:500}.spec-chip.popular:after{content:"🔥";margin-left:4px;font-size:12px}.param-section{background:var(--bg-white);border-radius:var(--radius);padding:14px;margin-bottom:12px;box-shadow:var(--shadow)}.param-section-title{font-size:14px;font-weight:600;margin-bottom:10px;display:flex;align-items:center;gap:6px}.param-row{display:flex;align-items:center;justify-content:space-between;padding:8px 0;border-bottom:1px solid #f5f5f5}.param-row:last-child{border-bottom:none}.param-label{font-size:13px;color:var(--text-secondary);min-width:80px}.param-value{display:flex;align-items:center;gap:4px}.param-input{width:80px;height:36px;padding:0 10px;border:1px solid var(--border);border-radius:6px;font-size:15px;text-align:right;outline:none}.param-input:focus{border-color:var(--primary)}.param-unit{font-size:12px;color:var(--text-hint);min-width:36px}.slider-container{padding:8px 0}.slider-label-row{display:flex;justify-content:space-between;margin-bottom:4px}.slider-track{width:100%;height:6px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--border);border-radius:3px;outline:none}.slider-track::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;border-radius:50%;background:var(--primary);cursor:pointer}.result-card{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:var(--radius);padding:20px;color:#fff;margin-bottom:12px}.result-price{font-size:32px;font-weight:700;margin:8px 0}.result-unit{font-size:14px;opacity:.8}.result-breakdown{background:#ffffff26;border-radius:var(--radius-sm);padding:12px;margin-top:12px}.result-row{display:flex;justify-content:space-between;padding:4px 0;font-size:13px}.calc-steps{background:var(--bg-white);border-radius:var(--radius);padding:14px;margin-bottom:12px}.calc-step{padding:8px 0;border-bottom:1px solid #f5f5f5;font-size:13px}.calc-step:last-child{border-bottom:none}.calc-step-label{color:var(--text-secondary);margin-bottom:2px}.calc-step-formula{font-family:Courier New,monospace;color:var(--primary);font-size:12px}.quotation-item{background:var(--bg-white);border-radius:var(--radius);padding:14px;margin-bottom:10px;box-shadow:var(--shadow);display:flex;justify-content:space-between;align-items:center}.quotation-item-info{flex:1}.quotation-item-name{font-weight:500;margin-bottom:4px}.quotation-item-spec{font-size:12px;color:var(--text-secondary)}.quotation-item-price{font-weight:600;color:var(--danger);font-size:16px}.summary-card{background:var(--bg-white);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}.summary-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid #f5f5f5}.summary-row:last-child{border-bottom:none}.summary-row.total{font-size:18px;font-weight:700;color:var(--danger);padding-top:12px}.tabbar{position:fixed;bottom:0;left:0;right:0;height:64px;background:var(--bg-white);border-top:1px solid var(--border);display:flex;z-index:100;max-width:480px;margin:0 auto}.tabbar-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:11px;color:var(--text-hint);text-decoration:none;cursor:pointer;transition:color .2s}.tabbar-item.active{color:var(--primary)}.tabbar-item .tabbar-icon{font-size:22px}.empty-state{text-align:center;padding:48px 24px;color:var(--text-hint)}.empty-state .emoji{font-size:48px;margin-bottom:12px}.tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:500}.tag-blue{background:var(--primary-light);color:var(--primary)}.tag-green{background:#f6ffed;color:var(--success)}.tag-orange{background:#fff7e6;color:var(--warning)}.divider{height:1px;background:var(--border);margin:12px 0}.text-center{text-align:center}.text-right{text-align:right}.text-primary{color:var(--primary)}.text-danger{color:var(--danger)}.text-success{color:var(--success)}.text-secondary{color:var(--text-secondary)}.text-hint{color:var(--text-hint)}.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}.mb-8{margin-bottom:8px}.mb-12{margin-bottom:12px}.mb-16{margin-bottom:16px}.flex-between{display:flex;justify-content:space-between;align-items:center}.back-btn{width:36px;height:36px;border:none;background:var(--bg);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;cursor:pointer}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease-out}.form-section-title{font-size:13px;font-weight:600;color:var(--primary);margin:12px 0 8px;padding-bottom:4px;border-bottom:1px dashed var(--border)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.modal-content{background:var(--bg-white);border-radius:var(--radius);padding:20px;width:100%;max-width:360px;box-shadow:0 8px 32px #00000026;animation:fadeIn .2s ease-out}.template-option{display:flex;align-items:center;gap:12px;padding:10px;border:2px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:all .2s}.template-option:hover,.template-option.selected{border-color:var(--primary);background:var(--primary-light)}.template-preview{width:64px;min-width:64px;text-align:center}.history-detail{border-left:3px solid var(--primary);margin-left:4px}.history-actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}