.card{max-width:800px;margin:2rem auto;padding:2rem;background-color:var(--background);border-radius:1rem;box-shadow:0 4px 6px rgba(0,0,0,.1)}.card h1{text-align:center;color:var(--foreground);font-size:2rem}.calculator .input-section,.card h1{margin-bottom:2rem}.calculator .input-section h3{color:var(--foreground);margin-bottom:1rem;font-size:1.2rem}.calculator .input-group{margin-bottom:1.5rem}.calculator .input-group label{display:block;margin-bottom:.5rem;color:var(--foreground);font-weight:500}.calculator .input-group .select-input,.calculator .input-group input{width:100%;padding:.75rem;border:1px solid #e5e7eb;border-radius:.5rem;background-color:var(--background);color:var(--foreground);font-size:1rem;transition:border-color .2s}.calculator .input-group .select-input:focus,.calculator .input-group input:focus{outline:none;border-color:#3b82f6}.calculator .input-group .select-input::placeholder,.calculator .input-group input::placeholder{color:#9ca3af}.calculator .input-group .select-input{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .75rem center;background-size:1.5em 1.5em;padding-right:2.5rem}.calculator button{width:100%;padding:1rem;background-color:#3b82f6;color:#fff;border:none;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:background-color .2s}.calculator button:hover{background-color:#2563eb}.calculator button:active{background-color:#1d4ed8}.calculator .result{margin-top:2rem;padding-top:2rem;border-top:1px solid #e5e7eb}.calculator .result h2{color:var(--foreground);margin-bottom:1.5rem;font-size:1.5rem;text-align:center}.calculator .result .result-section{margin-bottom:2rem}.calculator .result .result-section h3{color:var(--foreground);margin-bottom:1rem;font-size:1.2rem;padding-bottom:.5rem;border-bottom:1px solid #e5e7eb}.calculator .result .result-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem 0;color:var(--foreground)}.calculator .result .result-item.total-deduction{font-weight:600;color:#dc2626;border-top:1px solid #e5e7eb;margin-top:.5rem;padding-top:1rem}:root[class~=dark] .card{background-color:#1f2937;box-shadow:0 4px 6px rgba(0,0,0,.3)}:root[class~=dark] .input-group .select-input,:root[class~=dark] .input-group input{background-color:#374151;border-color:#4b5563;color:#f3f4f6}:root[class~=dark] .input-group .select-input::placeholder,:root[class~=dark] .input-group input::placeholder{color:#6b7280}:root[class~=dark] .result{border-top-color:#4b5563}:root[class~=dark] .result .result-section h3{border-bottom-color:#4b5563}:root[class~=dark] .result .result-item.total-deduction{border-top-color:#4b5563}