.calc-page{max-width:1040px;margin:auto;padding:70px 24px 90px}.crumb{font-size:13px;color:var(--muted);margin-bottom:30px}.crumb a{color:var(--green);text-decoration:none}.calc-intro{text-align:center;max-width:760px;margin:0 auto 38px}.calc-intro h1{font-size:clamp(40px,6vw,64px);line-height:1.02;letter-spacing:-3px;margin:0 0 18px}.calc-intro p{font-size:18px;color:var(--muted)}.calc-shell{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.calc-box{background:white;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow)}.calc-fields{display:grid;grid-template-columns:1fr 1fr;gap:16px}.calc-fields label{font-size:13px;font-weight:750}.calc-fields label span{float:right;color:var(--muted);font-weight:500}.calc-fields input{width:100%;margin-top:7px;border:1px solid #d5ddd9;background:#fbfcfa;border-radius:9px;padding:13px;font-size:17px;color:var(--ink);outline:none;box-sizing:border-box}.calc-fields input:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(19,121,91,.1)}.calc-result{background:var(--ink);color:white;border-radius:15px;padding:27px}.calc-result small{font-size:11px;letter-spacing:1px;opacity:.65}.calc-result strong{display:block;font-size:44px;letter-spacing:-2px;color:#7ee0b8;margin:5px 0}.calc-result p{opacity:.72;font-size:13px}.metric-grid{display:grid;grid-template-columns:1fr 1fr;margin-top:18px;border:1px solid var(--line);border-radius:13px;overflow:hidden}.metric-grid>div{padding:16px;border-bottom:1px solid var(--line)}.metric-grid>div:nth-child(odd){border-right:1px solid var(--line)}.metric-grid>div:nth-last-child(-n+2){border-bottom:0}.metric-grid small{display:block;color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.8px;margin-bottom:5px}.metric-grid b{font-size:18px}.formula{margin-top:18px;padding:16px;background:var(--mint);border-radius:11px;color:var(--green2);font-size:13px;line-height:1.5}.learn{margin-top:30px;background:white;border:1px solid var(--line);border-radius:16px;padding:28px}.learn h2{font-size:25px;margin-top:0}.learn p{color:var(--muted)}.back-tools{display:inline-block;margin-top:25px;color:var(--green);font-weight:750;text-decoration:none}@media(max-width:720px){.calc-page{padding:45px 16px 70px}.calc-shell{grid-template-columns:1fr}.calc-fields{grid-template-columns:1fr}.calc-intro h1{letter-spacing:-2px}.calc-box{padding:20px}}