#cn-unit-converter.cuc-container {
              width: 100%;
              font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
            }
            
            .cuc-converter-card {
              background: #f8fafc;
              border: 1px solid #e2e8f0;
              border-radius: 8px;
              padding: 24px;
              margin-bottom: 20px;
            }
            
            .cuc-input-group {
              display: flex;
              align-items: center;
              gap: 20px;
              flex-wrap: wrap;
            }
            
            .cuc-input-wrapper {
              flex: 1;
              min-width: 200px;
            }
            
            .cuc-input-label {
              display: block;
              font-size: 14px;
              font-weight: 500;
              color: #334155;
              margin-bottom: 8px;
            }
            
            .cuc-input-field {
              width: 100%;
              padding: 12px 16px;
              border: 1px solid #cbd5e1;
              border-radius: 6px;
              font-size: 16px;
              color: #1e293b;
              background: white;
              transition: all 0.2s;
              box-sizing: border-box;
            }
            
            .cuc-input-field:focus {
              outline: none;
              border-color: #3b82f6;
              box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
            }
            
            .cuc-input-field.cuc-num-input::-webkit-inner-spin-button,
            .cuc-input-field.cuc-num-input::-webkit-outer-spin-button {
              opacity: 1;
              height: 24px;
            }
            
            .cuc-unit-hint {
              font-size: 12px;
              color: #64748b;
              margin-top: 6px;
              text-align: right;
            }
            
            .cuc-convert-icon {
              font-size: 24px;
              color: #64748b;
              padding: 0 10px;
              flex-shrink: 0;
            }
            
            .cuc-hint-area {
              margin-top: 20px;
              padding-top: 16px;
              border-top: 1px dashed #e2e8f0;
            }
            
            .cuc-current-conversion {
              text-align: center;
              color: #475569;
              font-size: 14px;
              min-height: 20px;
            }
            
            .cuc-seo-content {
              background: #f1f5f9;
              border: 1px solid #e2e8f0;
              border-radius: 6px;
              padding: 20px;
              line-height: 1.6;
            }
            
            .cuc-seo-title {
              color: #1e293b;
              font-size: 18px;
              font-weight: 600;
              margin: 0 0 12px 0;
            }
            
            .cuc-seo-text {
              color: #475569;
              font-size: 14px;
            }
            
            .cuc-seo-text p {
              margin: 0 0 12px 0;
            }
            
            .cuc-seo-text p:last-child {
              margin-bottom: 0;
            }
            
            /* 响应式设计 */
            @media (max-width: 640px) {
              .cuc-converter-card {
                padding: 16px;
              }
              
              .cuc-input-group {
                flex-direction: column;
                gap: 16px;
              }
              
              .cuc-input-wrapper {
                min-width: 100%;
              }
              
              .cuc-convert-icon {
                transform: rotate(90deg);
                padding: 10px 0;
              }
            }