.ctn-calculator{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;margin:24px 0}
.ctn-card{background:#fff;border:1px solid #e1e4e9;border-radius:14px;padding:20px}
.ctn-card label{display:block;font-weight:700;margin-top:14px}
.ctn-card input,.ctn-card select{width:100%;box-sizing:border-box;padding:12px;margin-top:6px;border:1px solid #cfd5df;border-radius:8px}
.ctn-button{width:100%;padding:13px;margin-top:18px;border:0;border-radius:9px;background:#2457d6;color:#fff;font-weight:700;cursor:pointer}
.ctn-result{font-size:32px;font-weight:800;margin:8px 0 14px}
.ctn-insight{background:#f8fafc;border-left:4px solid #2457d6;padding:12px;margin-top:15px}
.ctn-error{color:#9b1c1c;margin-top:10px}.ctn-ad-hook{display:none}
@media(max-width:720px){.ctn-calculator{grid-template-columns:1fr}}
/* Reserved monetization hooks stay invisible until deliberately activated. */
.ctn-ad-hook[hidden]{display:none!important}