.calculator-container{max-width:800px;margin:2rem auto;padding:2rem;background-color:#ffffff;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,.08);font-family:Noto Sans KR,sans-serif}.calculator-container h1{font-size:1.8rem;text-align:center;margin-bottom:1.5rem;color:#333}.calculator-container label{display:block;margin-bottom:.3rem;font-weight:500;color:#444}.calculator-container input{width:100%;padding:.5rem;margin-bottom:1rem;border:1px solid #ccc;border-radius:6px;font-size:1rem;transition:border-color .2s}.calculator-container input:focus{border-color:#0070f3;outline:none}.calculator-container table{width:100%;border-collapse:collapse;margin-top:1rem;font-size:.95rem}.calculator-container td,.calculator-container th{border:1px solid #ddd;padding:.6rem .4rem}.calculator-container thead{background-color:#f5f5f5;font-weight:600}.calculator-container tfoot{background-color:#f0f0f0;font-weight:700}@media (max-width:768px){.calculator-container{padding:1rem}.calculator-container table,.calculator-container tbody,.calculator-container td,.calculator-container th,.calculator-container thead,.calculator-container tr{display:block}.calculator-container td,.calculator-container th{padding:.5rem;text-align:right}.calculator-container td:before{content:attr(data-label);float:left;font-weight:700;color:#333}}.tooltip-container{display:inline-block;position:relative;margin-left:5px;cursor:pointer}.tooltip-text{visibility:hidden;opacity:0;width:240px;background-color:#333;color:#fff;text-align:left;border-radius:4px;padding:6px;position:absolute;z-index:9999;bottom:125%;left:50%;transform:translateX(-50%);transition:opacity .3s;white-space:normal}.tooltip-container:hover .tooltip-text{visibility:visible;opacity:1}