.calculator-card{background:#fff;border-radius:16px;padding:30px;box-shadow:0 4px 12px rgb(0 0 0 / .08)}.output-box{background:#f1f5f9;border-radius:12px;padding:20px;text-align:center}.output-box h4{margin-bottom:10px;font-size:1rem;color:#555}.output-value{font-size:1.5rem;font-weight:700;color:#111}.faq-item{border-bottom:1px solid #ddd;padding:12px 0;cursor:pointer}.faq-item h5{display:flex;justify-content:space-between;align-items:center;margin:0;font-size:1rem}.faq-answer{display:none;margin-top:8px;color:#444}.faq-item.active .faq-answer{display:block}.faq-item svg{transition:transform 0.3s}.faq-item.active svg{transform:rotate(180deg)}