:root{color-scheme:light;--bg:#f5f8f7;--ink:#202b34;--muted:#718078;--green:#087f62;--line:#e3eae6}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,summary,select{cursor:pointer}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}button,a,input,summary,select{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible,select:focus-visible{outline:3px solid #309e82;outline-offset:4px}.shell{max-width:1096px;padding:0 36px;margin:auto}header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:26px 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-size:18px;letter-spacing:-.5px;font-weight:650;color:var(--ink)}.brand:hover{text-decoration:none}.brand-light{font-weight:400}.brand-icon{width:35px;height:35px;border-radius:10px;background:var(--green);color:white;display:flex;align-items:center;justify-content:center;font-size:23px;font-weight:500}.back-link{color:var(--muted);font-size:12px}.back-link span{margin-left:6px}main{padding-top:40px}.calculator{display:grid;grid-template-columns:1fr 1.05fr;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 5px 20px #21382b03}.inputs,.result-panel{padding:28px 30px;min-width:0}.inputs{border-right:1px solid var(--line)}.result-panel{background:#fdfefd}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:28px}h1,h2{margin:0;font-size:15px;font-weight:650;letter-spacing:-.2px}.badge{font-size:10px;font-weight:550;color:#687f70;background:#f0f5f2;padding:4px 8px;border-radius:5px;white-space:nowrap}.estimate{background:transparent;border:1px solid var(--line);border-radius:20px;font-size:9px;color:#87968b;font-weight:400}.field{min-width:0;margin-bottom:25px}.field label{display:block;font-size:12px;font-weight:550;margin-bottom:8px}.input-wrap{display:flex;align-items:center;min-height:48px;min-width:0;background:#fff;border:1px solid #dce5df;border-radius:8px;overflow:hidden;transition:border-color .15s,box-shadow .15s}.input-wrap:focus-within{border-color:var(--green);box-shadow:0 0 0 3px #087f620b}.input-wrap:has([aria-invalid=true]){border-color:#c45858}.input-wrap input{width:100%;min-width:0;padding:12px 14px;font-size:17px;font-weight:550;letter-spacing:-.3px;color:var(--ink);border:0;background:transparent;outline:0;font-variant-numeric:tabular-nums}.prefix{padding-left:14px;color:#819084;font-size:17px}.prefix+input{padding-left:8px}.suffix{padding-right:14px;color:#819084}.amount-row{display:grid;grid-template-columns:minmax(0,1fr) 100px;gap:10px}.amount-row select{min-width:0;border:1px solid #dce5df;border-radius:8px;background:#f8faf9;padding:0 10px;color:#435c4b;font-size:12px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.hint{margin:7px 0 0;color:#849087;font-size:10px;line-height:1.6}.error{color:#b34444;font-size:10px;line-height:1.6;margin:7px 0 0}.form-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;color:#7b8980;font-size:10px;margin-top:8px}.form-footer button{border:0;background:transparent;padding:10px 0;font-size:10px;color:var(--green);touch-action:manipulation}.form-footer button span{font-size:13px;margin-left:4px}.live-dot{display:inline-block;width:5px;height:5px;background:#68ad88;border-radius:50%;vertical-align:middle;margin-right:5px}.small-note{display:flex;gap:9px;padding-top:20px;margin-top:21px;border-top:1px solid var(--line);font-size:10px;color:#819087}.small-note p{margin:0;max-width:350px}.note-icon{flex:0 0 13px;height:13px;border:1px solid #a5b1a9;border-radius:50%;font-size:9px;font-weight:600;display:flex;align-items:center;justify-content:center;margin-top:2px}.main-result{padding:21px 20px;background:#eaf6f0;border:1px solid #dceddf;border-radius:10px;display:flex;flex-direction:column;gap:7px;color:var(--green)}.result-caption{font-size:10px;color:#6e907d}.main-result strong{font-size:clamp(25px,3.2vw,35px);font-weight:650;letter-spacing:-1px;font-variant-numeric:tabular-nums;overflow-wrap:anywhere;line-height:1.25}.compact-value{font-size:11px;color:#61876f}.explanation{font-size:11px;color:#708378;line-height:1.8;margin:18px 0 20px}.stats{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin:0;padding-bottom:23px;border-bottom:1px solid var(--line)}.stats>div{min-width:0}.stats dt{font-size:10px;color:#84928a;margin-bottom:5px}.stats dd{font-size:16px;letter-spacing:-.4px;font-weight:550;margin:0;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.power-heading{display:flex;justify-content:space-between;gap:12px;font-size:10px;color:#6e8175;margin:20px 0 9px}.power-heading strong{color:var(--green);font-size:11px;font-weight:550}.power-bar{height:7px;border-radius:8px;background:#e6eeea;overflow:hidden}.power-bar span{display:block;height:100%;width:0;background:#49a383;border-radius:8px;transition:width .2s}.power-note{font-size:10px;color:#8b978f;margin:9px 0 0;line-height:1.6}.method{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:28px}.method summary{display:flex;align-items:center;justify-content:space-between;list-style:none;padding:19px 0;font-size:12px;color:#5b7063}.method summary::-webkit-details-marker{display:none}.details-icon{font-size:20px;font-weight:300;color:#8fa097}.method[open] .details-icon{transform:rotate(45deg)}.method-content{max-width:790px;padding-bottom:22px;font-size:11px;line-height:1.8;color:var(--muted)}.method-content p{margin:0 0 12px;overflow-wrap:anywhere}.method-content p:first-child{font-weight:600;color:#4a6755}.method-content a{font-size:10px;font-weight:550}footer{display:flex;justify-content:space-between;gap:15px;padding:24px 0 30px;color:#89968d;font-size:10px}.noscript{padding:20px;background:#fff1df;border-radius:8px;color:#85611e}#empty-result{font-size:13px;color:var(--muted);padding:30px 0}[hidden]{display:none!important}
@media(max-width:800px){.shell{max-width:650px;padding:0 24px}main{padding-top:30px}.calculator{grid-template-columns:1fr}.inputs{border-right:0;border-bottom:1px solid var(--line)}.inputs,.result-panel{padding:25px}.main-result strong{font-size:35px}}
@media(max-width:480px){.shell{padding:0 18px}header{padding:20px 0}.brand{font-size:16px}.brand-icon{width:31px;height:31px;font-size:21px;border-radius:8px}.back-link{font-size:10px}.inputs,.result-panel{padding:22px 20px}.field-row{gap:12px}.field label{font-size:11px}.input-wrap input{font-size:16px}.amount-row{grid-template-columns:minmax(0,1fr) 86px}.amount-row select{font-size:11px;padding:0 8px}.hint{font-size:9px}.main-result{padding:19px 16px}.main-result strong{font-size:29px}.stats{gap:8px}.stats dt{font-size:9px}.stats dd{font-size:15px}.form-footer{font-size:9px}.form-footer button{font-size:9px}footer{flex-direction:column;gap:6px;font-size:9px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}