.calc-btn{width:100%;padding:16px;background:linear-gradient(90deg,#5b21b6,#6d28d9);border:none;border-radius:13px;color:#fff;font-family:"Poppins",sans-serif;font-size:16px;font-weight:700;cursor:pointer;transition:all .22s;box-shadow:0 4px 14px rgba(109,40,217,.3);letter-spacing:.02em;margin-top:4px}.calc-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(109,40,217,.4)}.result-card.show{display:block}.eq-results.show{display:block}.eq-sol{background:var(--white);border:1.5px solid var(--violet-l);border-radius:12px;padding:16px;text-align:center}.eq-sol .sol-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:6px}.eq-sol .sol-val{font-size:24px;font-weight:800;color:var(--violet-d);font-family:"Courier New",monospace}.eq-sol .sol-check{font-size:12px;color:var(--sub);margin-top:4px}.steps-box.show{display:block}.step-row{display:flex;gap:12px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--border);font-size:14px;color:var(--sub)}.step-row:last-child{border-bottom:none}.step-row .sn{width:24px;height:24px;border-radius:50%;background:var(--violet);color:#fff;font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px}.step-row code{font-family:"Courier New",monospace;background:var(--white);border:1px solid var(--border);padding:2px 8px;border-radius:5px;font-size:13px;color:var(--violet-d);font-weight:700}.callout-g{border-left-color:var(--green);background:var(--green-ul)}.callout-g strong{color:var(--green)}.callout-a{border-left-color:var(--amber);background:var(--amber-ul)}.callout-a strong{color:var(--amber)}.faq-q.open{background:var(--violet-ul);color:var(--violet-d)}.faq-q.open .arr{transform:rotate(180deg)}.faq-a.open{display:block}