:root{--fitnfo-brand:#6d4aff;--fitnfo-brand-2:#8b6bff;--fitnfo-deep:#1e1b4b;--fitnfo-line:#e7e5ff;--fitnfo-ink:#0b1020}.fitnfo-calc,.fitnfo-core-box{font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.fitnfo-calc{max-width:620px;margin:28px auto;background:#fff;border:1px solid var(--fitnfo-line);border-radius:24px;box-shadow:0 22px 60px rgb(11 16 32 / .10);overflow:hidden}.fitnfo-calc__head{padding:24px 28px;background:linear-gradient(135deg,#4f46e5,#7c3aed,#a855f7);color:#fff}.fitnfo-calc__title{margin:0;color:#fff;font-size:1.35rem;font-weight:800}.fitnfo-calc__sub{margin:6px 0 0;color:rgb(255 255 255 / .85);font-size:.92rem}.fitnfo-calc__body{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:24px 28px}.fitnfo-calc__field{display:flex;flex-direction:column;gap:6px}.fitnfo-calc__field label{font-size:.8rem;font-weight:700;color:var(--fitnfo-deep);text-transform:uppercase;letter-spacing:.03em}.fitnfo-calc__in{padding:11px 13px;border:1px solid var(--fitnfo-line);border-radius:12px;font-size:1rem;background:#fbfaff;color:var(--fitnfo-ink);transition:border-color .15s,box-shadow .15s}.fitnfo-calc__in:focus{outline:none;border-color:var(--fitnfo-brand);box-shadow:0 0 0 3px rgb(109 74 255 / .15)}.fitnfo-calc__btn{display:block;width:calc(100% - 56px);margin:0 28px 24px;padding:14px 18px;border:0;border-radius:999px;background:linear-gradient(135deg,var(--fitnfo-brand),var(--fitnfo-brand-2));color:#fff;font-weight:800;font-size:1rem;cursor:pointer;transition:transform .12s,box-shadow .12s}.fitnfo-calc__btn:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgb(109 74 255 / .35)}.fitnfo-calc__btn:active{transform:translateY(0)}.fitnfo-calc__result{margin:0 28px 28px;padding:20px 22px;border-radius:18px;background:linear-gradient(135deg,#f5f3ff,#eef2ff);border:1px solid var(--fitnfo-line);text-align:center}.fitnfo-calc__value{font-size:2.1rem;font-weight:900;color:var(--fitnfo-deep);line-height:1.1}.fitnfo-calc__unit{font-size:1rem;font-weight:700;color:var(--fitnfo-brand)}.fitnfo-calc__note{margin:8px 0 0;color:#4b5563;font-size:.95rem}.fitnfo-calc--missing{max-width:620px;margin:28px auto;padding:20px;border:1px dashed var(--fitnfo-line);border-radius:18px;text-align:center;color:#6b7280}.fitnfo-calc__body input.is-error{border-color:#ef4444;box-shadow:0 0 0 3px rgb(239 68 68 / .12)}.fitnfo-core-box{max-width:760px;margin:28px auto;background:#fff;border:1px solid var(--fitnfo-line);border-radius:24px;box-shadow:0 22px 60px rgb(11 16 32 / .10);overflow:hidden}.fitnfo-core-box h3{margin:0;padding:24px 28px;background:linear-gradient(135deg,#4f46e5,#7c3aed,#a855f7);color:#fff}.fitnfo-core-box .button{border-radius:999px;background:linear-gradient(135deg,var(--fitnfo-brand),var(--fitnfo-brand-2));color:#fff;font-weight:800;padding:10px 16px;text-decoration:none;display:inline-block}@media(max-width:640px){.fitnfo-calc__body{grid-template-columns:1fr}.fitnfo-calc{margin:14px 8px}.fitnfo-calc__btn{width:calc(100% - 40px);margin:0 20px 20px}.fitnfo-calc__result{margin:0 20px 20px}}.fitnfo-calc__lbl{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.fitnfo-unit-toggle{display:inline-flex;border:1px solid #E5E7EB;border-radius:999px;overflow:hidden;background:#F9FAFB}.fitnfo-unit-btn{border:0;background:#fff0;padding:3px 12px;font-size:12px;font-weight:700;color:#6B7280;cursor:pointer;line-height:1.6;transition:all .15s}.fitnfo-unit-btn:hover{color:#FF6B2C}.fitnfo-unit-btn.is-active{background:#FF6B2C;color:#fff}.fitnfo-calc__ftin{display:flex;align-items:center;gap:8px}.fitnfo-calc__ftin input{flex:1;min-width:0}.fitnfo-calc__ftin-sep{font-size:13px;font-weight:600;color:#6B7280}