:root{--bg:#f8fafc;--text:#111827;--muted:#6b7280;--panel:#fff;--border:#e5e7eb;--primary:#0f766e;--primary-dark:#115e59}*{box-sizing:border-box}body{margin:0;color:var(--text);background:radial-gradient(circle at top right,rgba(20,184,166,.14),transparent 30rem),linear-gradient(180deg,#fff 0,var(--bg) 22rem);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.shell{margin:0 auto;max-width:1120px;padding:0 20px}.header{border-bottom:1px solid var(--border);background:hsla(0,0%,100%,.88);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.nav{display:flex;min-height:68px;align-items:center;justify-content:space-between}.brand{font-weight:850}.hero{padding:70px 0 28px}.eyebrow{display:inline-flex;border-radius:999px;border:1px solid var(--border);background:#fff;padding:7px 11px;color:var(--primary-dark);font-size:13px;font-weight:800}h1{margin:18px 0 0;max-width:820px;font-size:clamp(38px,6vw,64px);line-height:1;letter-spacing:0}.lead{max-width:740px;color:var(--muted);font-size:18px;line-height:1.7}.calculator{display:grid;grid-template-columns:minmax(0,1fr) 360px;grid-gap:18px;gap:18px;padding:26px 0 56px}.content-card,.panel{border:1px solid var(--border);border-radius:8px;background:var(--panel);box-shadow:0 20px 60px rgba(15,23,42,.06)}.panel{padding:20px}.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:14px;gap:14px}label{display:grid;grid-gap:7px;gap:7px;color:#374151;font-size:14px;font-weight:750}input{width:100%;border:1px solid var(--border);border-radius:8px;padding:12px}.result{display:grid;grid-gap:14px;gap:14px}.metric{border-radius:8px;background:#f0fdfa;padding:16px}.metric span{display:block;color:var(--muted);font-size:13px;font-weight:750}.metric strong{display:block;margin-top:4px;color:var(--primary-dark);font-size:28px}.content-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:16px;gap:16px;padding-bottom:64px}.content-card{padding:20px}.content-card li,.content-card p{color:var(--muted);line-height:1.65}.faq{max-width:820px;padding-bottom:80px}details{margin-top:10px}summary{cursor:pointer;font-weight:850}.footer{border-top:1px solid var(--border);padding:28px 0;color:var(--muted);font-size:14px}@media (max-width:860px){.calculator,.content-grid,.fields{grid-template-columns:1fr}}