.act-calculator{max-width:420px;padding:20px;background:#f8fafc;border-radius:14px;box-shadow:0 8px 25px rgba(0,0,0,.1);font-family:Arial}
.act-calculator h2{text-align:center}
.act-calculator label{margin-top:10px;display:block;font-weight:bold}
.act-calculator input{width:100%;padding:8px;border-radius:6px;border:1px solid #ccc}
.act-calculator button{margin-top:15px;width:100%;padding:10px;border:none;border-radius:8px;background:#2563eb;color:#fff;font-size:16px}
#res{margin-top:12px;font-size:18px;text-align:center}
.disclaimer{font-size:12px;color:#555;text-align:center;margin-top:10px}