.ifh-calc{--ifh-primary:#0f4c81;--ifh-primary-dark:#0a3a63;--ifh-accent:#16a34a;--ifh-accent-dark:#0f7a37;--ifh-warn:#d97706;--ifh-danger:#dc2626;--ifh-bg:#f7fafc;--ifh-card:#fff;--ifh-border:#e2e8f0;--ifh-text:#1e293b;--ifh-muted:#64748b;--ifh-radius:16px;--ifh-tool-accent:var(--ifh-primary);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;position:relative;max-width:760px;margin:0 auto;background:var(--ifh-card);border:1px solid var(--ifh-border);border-radius:var(--ifh-radius);padding:30px;box-shadow:0 2px 10px rgba(15,23,42,.05);color:var(--ifh-text);box-sizing:border-box}.ifh-calc *{box-sizing:border-box}.ifh-calc:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;border-radius:var(--ifh-radius) var(--ifh-radius) 0 0;background:var(--ifh-tool-accent)}.ifh-header{display:flex;align-items:flex-start;gap:14px;margin-bottom:22px}.ifh-icon-badge{width:46px;height:46px;border-radius:13px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb,var(--ifh-tool-accent) 13%,#fff);color:var(--ifh-tool-accent)}.ifh-header-text{min-width:0}.ifh-title{font-size:21px;font-weight:800;margin:2px 0 5px;color:var(--ifh-primary-dark);line-height:1.3;letter-spacing:-.01em}.ifh-subtitle{font-size:14.5px;color:var(--ifh-muted);margin:0;line-height:1.5}.ifh-form{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px}.ifh-form.ifh-form-1col{grid-template-columns:1fr}@media (max-width:520px){.ifh-form{grid-template-columns:1fr}}.ifh-field{display:flex;flex-direction:column;gap:6px}.ifh-field.ifh-span2{grid-column:1/-1}.ifh-field label{font-size:13.5px;font-weight:600;color:var(--ifh-text)}.ifh-hint{font-size:12px;color:var(--ifh-muted);margin-top:-2px}.ifh-field input[type=number],.ifh-field input[type=text],.ifh-field select{width:100%;padding:10px 12px;border:1.5px solid var(--ifh-border);border-radius:10px;font-size:15px;color:var(--ifh-text);background:#fff;transition:border-color .15s,box-shadow .15s}.ifh-field input:focus,.ifh-field select:focus{outline:none;border-color:var(--ifh-tool-accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--ifh-tool-accent) 18%,transparent)}.ifh-radiogroup{display:flex;gap:10px;flex-wrap:wrap}.ifh-radiogroup label{display:flex;align-items:center;gap:6px;font-size:13.5px;font-weight:500;border:1.5px solid var(--ifh-border);padding:8px 12px;border-radius:10px;cursor:pointer;color:var(--ifh-text);transition:border-color .15s}.ifh-radiogroup input{accent-color:var(--ifh-tool-accent)}.ifh-radiogroup input:checked+span{color:var(--ifh-primary-dark);font-weight:700}.ifh-actions{margin-top:22px}.ifh-btn{background:linear-gradient(135deg,var(--ifh-tool-accent),var(--ifh-primary-dark));color:#fff;border:none;padding:14px 22px;border-radius:11px;font-size:15.5px;font-weight:700;cursor:pointer;width:100%;box-shadow:0 4px 14px color-mix(in srgb,var(--ifh-tool-accent) 35%,transparent);transition:transform .15s,box-shadow .15s}.ifh-btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px color-mix(in srgb,var(--ifh-tool-accent) 45%,transparent)}.ifh-btn:active{transform:translateY(0)}.ifh-result{margin-top:22px;padding:22px;border-radius:14px;background:var(--ifh-bg);border:1px solid var(--ifh-border);border-left:4px solid var(--ifh-tool-accent);display:none}.ifh-result.show{display:block;animation:ifhFadeIn .35s ease both}@media (prefers-reduced-motion:reduce){.ifh-result.show{animation:none}}@keyframes ifhFadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.ifh-result-main{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:8px;padding-bottom:14px;margin-bottom:14px;border-bottom:1px solid var(--ifh-border)}.ifh-result-label{font-size:14px;color:var(--ifh-muted);font-weight:600}.ifh-result-value{font-size:29px;font-weight:800;color:var(--ifh-primary-dark);letter-spacing:-.01em}.ifh-result-value.accent{color:var(--ifh-accent-dark)}.ifh-result-value.warn{color:var(--ifh-warn)}.ifh-breakdown{display:flex;flex-direction:column;gap:9px}.ifh-row{display:flex;justify-content:space-between;font-size:14px;gap:12px}.ifh-row span:first-child{color:var(--ifh-muted)}.ifh-row span:last-child{font-weight:700;text-align:right}.ifh-row.total{border-top:1px dashed var(--ifh-border);padding-top:9px;margin-top:2px;font-size:15px}.ifh-error{display:none;background:#fef2f2;border:1px solid #fecaca;color:var(--ifh-danger);font-size:13.5px;padding:10px 13px;border-radius:10px;margin-top:14px}.ifh-error.show{display:block}.ifh-note{font-size:12.5px;color:var(--ifh-muted);margin-top:12px;line-height:1.5;background:#f1f5f9;padding:12px 14px;border-radius:10px}.ifh-disclaimer{font-size:11.5px;color:#94a3b8;margin-top:18px;padding-top:14px;border-top:1px solid var(--ifh-border);line-height:1.5}.ifh-badge{display:inline-block;font-size:11px;font-weight:700;padding:3px 9px;border-radius:99px;background:#e0f2fe;color:#075985;margin-left:8px;vertical-align:middle}.ifh-badge.good{background:#dcfce7;color:#166534}.ifh-badge.warn{background:#fef3c7;color:#92400e}.ifh-badge.bad{background:#fee2e2;color:#991b1b}