#apc-calculator{max-width:400px;margin:20px auto;padding:20px;border:2px solid #0073aa;border-radius:10px;background:#f7f9fc;box-shadow:0 0 15px rgba(0,0,0,.1)}#apc-calculator h2{text-align:center;color:#0073aa}#apc-calculator form{display:flex;flex-direction:column}#apc-calculator label{margin:10px 0 5px}#apc-calculator input,#apc-calculator select,#apc-calculator button{padding:10px;margin-bottom:10px;border-radius:5px;border:1px solid #ccc}#apc-calculator button{background:#0073aa;color:#fff;border:none;cursor:pointer;font-size:16px}#apc-calculator button:hover{background:#005a87}#result{margin-top:20px;text-align:center;font-weight:700;color:#333}