.fp-fl-zip-calc{border:1px solid #e5e7eb;border-radius:16px;padding:16px;margin:20px 0;background:#fff}
.fp-fl-zip-calc h3{margin:0 0 6px 0;font-size:20px;line-height:1.2}
.fp-muted{margin:0 0 14px 0;color:#4b5563}
.fp-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.fp-row label{flex:1;min-width:220px;display:flex;flex-direction:column;font-weight:600;font-size:13px;gap:6px}
.fp-row input,.fp-row select{padding:10px 10px;border:1px solid #d1d5db;border-radius:10px;font-size:14px}
.fp-btn{display:inline-block;padding:10px 14px;border-radius:12px;border:1px solid #111827;background:#111827;color:#fff;font-weight:700;cursor:pointer}
.fp-btn:hover{opacity:.92}
.fp-result{margin-top:14px}
.fp-card{border:1px solid #e5e7eb;border-radius:14px;padding:14px;background:#f9fafb}
.fp-big{font-size:22px;font-weight:800}
.fp-small{font-size:14px;font-weight:600;color:#374151}
.fp-sub{margin-top:6px;color:#374151}
.fp-note{margin-top:8px;font-size:12px;color:#6b7280}
.fp-error{border:1px solid #fecaca;background:#fff1f2;color:#9f1239;padding:12px;border-radius:12px;font-weight:700}
.fp-advanced{margin:6px 0 10px 0}
.fp-advanced summary{cursor:pointer;color:#111827;font-weight:700}