.epc-calculator-wrapper{max-width:1100px;margin:0 auto;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen-Sans,Ubuntu,Cantarell,"Helvetica Neue",sans-serif}
.epc-layout{display:flex;background:#fff;border-radius:20px;box-shadow:0 8px 24px rgba(0,0,0,0.08);overflow:hidden}
.epc-sidebar{width:260px;background:#1f2cff;color:#fff;padding:28px 22px;display:flex;align-items:flex-start}
.epc-nav{list-style:none;margin:0;padding:0;width:100%}
.epc-nav li{padding:14px 12px;border-radius:10px;color:#dbe0ff;font-weight:600;display:flex;align-items:center;gap:10px}
.epc-nav li.active{background:rgba(255,255,255,0.12);color:#fff}
.epc-chevron{font-size:18px;line-height:1}
.epc-content{flex:1;padding:30px}
.epc-card{background:#fff;border:1px solid #eee;border-radius:16px;padding:24px;margin-bottom:24px}
.epc-card-header{font-size:18px;font-weight:600;margin-bottom:10px}
.epc-card-subtitle{font-size:16px;font-weight:700;margin:18px 0 8px}
.epc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 24px}
.epc-form-group{display:flex;flex-direction:column;gap:8px}
.epc-form-group label{font-weight:600;color:#333}
.epc-form-group select,.epc-form-group input{width:100%;padding:12px 14px;border:1px solid #e6e6ef;border-radius:12px;background:#f7f7ff;box-sizing:border-box;font-size:14px}
.epc-actions{display:flex;justify-content:flex-end;margin-top:25px}
.epc-btn-primary{padding:12px 26px;background:#6b5cff;color:#fff;border:none;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;box-shadow:0 4px 10px rgba(107,92,255,0.3)}
.epc-btn-primary:disabled{background:#bfbff6;cursor:not-allowed}
.epc-btn-secondary{padding:12px 26px;background:#fff;color:#6b5cff;border:2px solid #6b5cff;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer}
.epc-reset-wrap{display:flex;justify-content:flex-end;margin-top:18px}
#epc-result{margin-top:0}
.epc-result-table{width:100%;border-collapse:collapse;margin-top:6px}
.epc-result-table th,.epc-result-table td{padding:12px 10px;text-align:left;border-bottom:1px solid #f0f0f5;font-weight:500}
.epc-result-table td{text-align:left}
.epc-result-table thead th{background:#f3f2ff;color:#5b57a6;border-bottom:none}
.epc-total-row th,.epc-total-row td{font-weight:600;color:#d63638}
.epc-final-row th,.epc-final-row td{font-size:18px;font-weight:600;color:#18a35b;border-bottom:none;padding-top:14px}
.epc-table-responsive{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.epc-footer-credit{text-align:center;margin-top:20px;font-size:12px;color:#888}
.epc-footer-credit a{color:#6b5cff;text-decoration:none}
@media (max-width:900px){.epc-sidebar{width:200px}.epc-grid{grid-template-columns:1fr}}
@media (max-width:560px){.epc-layout{flex-direction:column;border-radius:12px}.epc-sidebar{width:100%;padding:20px;flex-direction:row;overflow-x:auto;white-space:nowrap}.epc-nav{display:flex;gap:10px}.epc-nav li{flex:0 0 auto}.epc-content{padding:18px}.epc-card{padding:18px}.epc-card-header{font-size:16px}.epc-final-row th,.epc-final-row td{font-size:16px}}