.fcp-wrap{max-width:720px;margin:24px auto;font-family:system-ui}
.fcp-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:16px}
.fcp-tab{padding:10px;border-radius:10px;border:1px solid #e5e7eb;background:#f8fafc;font-weight:600;cursor:pointer}
.fcp-tab.active{background:#2563eb;color:#fff}
.fcp-hidden{display:none}
.fcp-card{background:#fff;border:1px solid #eef2f7;border-radius:16px;padding:16px;margin:12px 0;box-shadow:0 8px 20px rgba(2,6,23,.05)}
.fcp-header{display:flex;gap:8px;align-items:center;margin-bottom:12px}
.fcp-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:640px){.fcp-grid{grid-template-columns:1fr}}
.fcp-field label{font-size:.85rem;color:#334155}
.fcp-field input,.fcp-field select{width:100%;padding:10px;border-radius:12px;border:1px solid #e5e7eb}
.calc-btn,.reset-btn{margin-top:10px;padding:10px;border-radius:12px;border:none;background:#2563eb;color:#fff;font-weight:700;cursor:pointer}
.reset-btn{background:#94a3b8}
.result{margin-top:10px;font-weight:800}
.fcp-help{font-size:.75rem;color:#64748b;margin-top:4px}
.fcp-hint{margin-top:8px;padding:8px 12px;border-radius:10px;background:#ecfeff;color:#155e75;font-size:.85rem}