:root{--ink:#163d31;--green:#246448;--soft:#e9f0e7;--lime:#dcf1aa;--line:#d8e1d6;--muted:#5c6d62;--bg:#f7f8f3}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:20px}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:#215e43;text-underline-offset:3px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.5;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #5f7fbd;outline-offset:3px}.skip{position:absolute;top:-100px;left:20px;z-index:5;padding:12px;background:white}.skip:focus{top:8px}.shell{max-width:1140px;margin:auto;padding:0 24px}.header{border-bottom:1px solid var(--line)}.header .shell{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:20px;padding-bottom:20px}.brand{display:flex;align-items:center;gap:10px;font-weight:750;font-size:21px;letter-spacing:-.6px;text-decoration:none;color:var(--ink)}.brand img{width:35px;height:35px}.header nav{display:flex;gap:24px;font-size:13px}.header nav a{padding:8px 0;text-decoration:none}.intro{padding:30px 0 22px;display:flex;justify-content:space-between;gap:30px;align-items:center}.eyebrow{text-transform:uppercase;letter-spacing:1.7px;font-size:11px;font-weight:750;color:#5d755b;margin:0 0 8px}h1{font-size:clamp(31px,4vw,44px);line-height:1.12;letter-spacing:-1.5px;font-weight:700;margin:0 0 10px}.intro p:last-child{margin:0;color:var(--muted)}.intro-mark{display:flex;gap:7px;align-items:center;font-size:12px;white-space:nowrap}.dot{width:7px;height:7px;border-radius:100%;background:var(--green)}.app{display:grid;grid-template-columns:1fr 1.07fr;gap:23px;align-items:start}.card{background:white;border:1px solid var(--line);border-radius:18px;overflow:hidden}.input-card{padding:24px}.topline{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:0 0 20px}.topline h2{font-size:16px;margin:0;font-weight:750}.pill{font-size:10px;text-transform:uppercase;letter-spacing:1px;font-weight:750;border:1px solid var(--line);padding:5px 9px;border-radius:20px;color:var(--muted)}.direction{display:flex;background:#edf1eb;border-radius:10px;padding:4px;gap:4px;margin-bottom:21px}.direction button{flex:1;min-height:44px;border:0;border-radius:7px;background:transparent;color:var(--muted);font-size:13px;font-weight:750}.direction button[aria-pressed=true]{background:white;color:var(--ink);box-shadow:0 2px 5px #14382214}.field{margin-bottom:18px;min-width:0}label,legend{font-size:13px;font-weight:700;display:block;margin-bottom:7px}fieldset{border:0;margin:0;padding:0;min-width:0}input,select,textarea{width:100%;min-width:0;background:white;color:var(--ink);border:1px solid #b9c8b7;border-radius:8px;padding:11px 12px;min-height:47px}input[type=number]{font-variant-numeric:tabular-nums}.large{font-size:31px;font-weight:700;letter-spacing:-.7px;padding:12px 15px}.with-unit{display:grid;grid-template-columns:minmax(0,1fr) 102px;gap:8px}.unit-static{background:#f4f6f0;border:1px solid var(--line);border-radius:8px;display:grid;place-items:center;font-size:14px;font-weight:700}.row{display:grid;grid-template-columns:1fr 1fr;gap:13px}.step-section{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}.step-section legend{font-size:14px;margin-bottom:12px}.method-options{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-bottom:18px}.method{display:flex;align-items:start;gap:8px;padding:11px;border:1px solid var(--line);border-radius:9px;font-size:12px;cursor:pointer;margin:0;min-height:68px}.method:has(input:checked){background:#f0f5e8;border-color:#71966a}.method input{width:16px;min-height:16px;margin:3px 0 0;accent-color:var(--green)}.method small{display:block;font-size:11px;font-weight:400;color:var(--muted);margin-top:3px}.hint{font-size:12px;color:var(--muted);line-height:1.6;margin:7px 0 0}.context-note{font-size:12px;background:#f2f5ed;border-radius:7px;padding:11px 12px;color:#4b6551;margin:0 0 18px}.mini-steps{display:flex;align-items:center;gap:12px;margin-bottom:16px}.mini-steps svg{width:100px;height:42px;flex-shrink:0}.mini-steps p{font-size:12px;color:var(--muted);margin:0}.calibration-instructions{margin:0 0 17px;padding-left:20px;font-size:12px;color:var(--muted);line-height:1.8}.calibration-result{font-size:12px;background:#eef4e8;padding:11px 12px;border-radius:8px;margin-bottom:17px}.calibration-result strong{font-size:18px;display:block;margin-top:3px}.button{border:1px solid #bacab9;background:white;color:var(--ink);border-radius:8px;min-height:44px;padding:10px 15px;font-size:13px;font-weight:750}.button:hover{border-color:var(--green)}.primary{background:var(--green);border-color:var(--green);color:white}.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.text-button{border:0;background:transparent;color:var(--green);text-decoration:underline;text-underline-offset:3px;font-size:12px;padding:8px 0;min-height:44px}.profiles{border-top:1px solid var(--line);padding-top:18px;margin-top:20px}.profiles summary{font-size:13px;font-weight:750;cursor:pointer;min-height:26px}.profiles-body{padding-top:15px}.profile-save{display:grid;grid-template-columns:1fr auto;gap:8px}.result-card{background:var(--green);color:white;position:relative;border:0;padding:27px 28px}.result-card:after{content:"";position:absolute;right:-60px;top:-50px;width:240px;height:240px;border:1px solid #5e866630;border-radius:100%;box-shadow:0 0 0 24px #5e866610,0 0 0 48px #5e866610;pointer-events:none}.result-tag{font-size:11px;letter-spacing:1.7px;text-transform:uppercase;font-weight:650;color:#d2e3ca;margin:0;position:relative;z-index:1}.answer{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin:9px 0 3px;line-height:1.12;position:relative;z-index:1}.answer strong{font-size:clamp(43px,5vw,68px);font-weight:650;letter-spacing:-2.3px;overflow-wrap:anywhere}.answer span{font-size:24px;color:var(--lime)}.result-context{font-size:12px;color:#d9e8d4;margin:8px 0 20px;position:relative;z-index:1}.equivalents{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;border-top:1px solid #5b8666;border-bottom:1px solid #5b8666;padding:15px 0;margin:0 0 17px}.equivalents dt{font-size:11px;color:#d3e1cd}.equivalents dd{font-size:18px;font-weight:650;margin:4px 0 0;overflow-wrap:anywhere}.formula{font-size:12px;color:#dfecd9;line-height:1.7;margin:0}.result-card .button{background:var(--lime);color:#173e2d;border-color:var(--lime)}.result-card .secondary{background:transparent;color:white;border-color:#82a589}.status{font-size:12px;min-height:19px;margin:9px 0 0}.error{font-size:13px;color:#a32d29;margin:8px 0}.result-card .error{color:#ffe1ba}.small-print{font-size:12px;margin:12px 3px 0;color:var(--muted)}.goal-card{padding:23px;margin-top:20px}.goal-card h2{font-size:18px;margin:0}.goal-top{display:flex;align-items:center;gap:10px;justify-content:space-between;margin-bottom:17px}.goal-top .eyebrow{margin:0}.goal-fields{display:grid;grid-template-columns:1fr 100px;gap:9px}.goal-result{font-size:13px;color:var(--muted);margin:14px 0 9px}.goal-result strong{color:var(--ink)}progress{display:block;width:100%;height:10px;border:0;border-radius:30px;overflow:hidden;background:#edf1e8;accent-color:var(--green)}progress::-webkit-progress-bar{background:#edf1e8;border-radius:30px}progress::-webkit-progress-value{background:#5a8a50;border-radius:30px}progress::-moz-progress-bar{background:#5a8a50}.goal-percent{font-size:11px;color:var(--muted);margin:6px 0 0}.scenario{padding:14px 2px 0}.scenario summary{font-size:12px;color:var(--muted);cursor:pointer;min-height:30px}.scenario p{font-size:12px;color:var(--muted)}.tools{display:grid;grid-template-columns:1fr 1.07fr;gap:23px;margin-top:24px;align-items:start}.tool-card{padding:23px}.tool-card h2{font-size:19px;letter-spacing:-.3px;margin:0 0 4px}.tool-card>p{font-size:12px;color:var(--muted);margin:0 0 16px}.table-wrap{overflow:auto;width:100%}table{width:100%;border-collapse:collapse;font-size:13px;font-variant-numeric:tabular-nums;text-align:left}th,td{padding:11px 8px;border-bottom:1px solid #e4eadf;white-space:nowrap}th{font-size:10px;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}th:first-child,td:first-child{padding-left:0}td:last-child,th:last-child{text-align:right}.bar{display:block;height:3px;border-radius:3px;width:var(--width);background:#a0bd86;margin-top:6px}.custom-table textarea{height:93px;resize:vertical}.custom-table .row{align-items:end}.custom-table .field{margin-bottom:8px}.custom-table .button{width:100%;margin-bottom:8px}.custom-table table{margin-top:10px}.explanation{margin:65px auto 45px;max-width:980px;display:grid;grid-template-columns:240px 1fr;gap:40px}.side-note{background:#eaf0e2;border-radius:16px;padding:24px;height:max-content}.side-note h2{font-size:24px;line-height:1.3;letter-spacing:-.6px;margin:0 0 13px}.side-note p{font-size:13px;color:var(--muted);line-height:1.7}.side-note a{font-size:12px;font-weight:700}.prose section{margin-bottom:37px}.prose h2{font-size:27px;line-height:1.25;letter-spacing:-.6px;margin:0 0 15px}.prose h3{font-size:18px;margin-bottom:7px}.prose p,.prose li{font-size:15px;line-height:1.85;color:#526454}.math-box{background:white;border:1px solid var(--line);border-radius:10px;padding:19px;display:grid;gap:10px;font:13px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace}.faq details{border-bottom:1px solid var(--line);padding:15px 0}.faq summary{cursor:pointer;font-weight:700;font-size:15px}.faq p{margin-bottom:0}.sources li{font-size:13px}.footer{border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.footer .shell{display:flex;justify-content:space-between;gap:20px;padding-top:24px;padding-bottom:24px}.footer p{margin:0}.print-card{display:none}noscript{display:block;padding:18px;background:#fff0cf;margin-bottom:20px}[hidden]{display:none!important}@media(max-width:780px){.length-row{grid-template-columns:1fr}.length-row .with-unit{grid-template-columns:minmax(0,1fr) 110px}.app,.tools{grid-template-columns:1fr}.intro-mark{display:none}.intro{padding-top:26px}.shell{padding-left:18px;padding-right:18px}.header nav{gap:16px}.explanation{grid-template-columns:1fr;gap:28px;margin-top:45px}.side-note{padding:22px}.side-note h2{font-size:23px}.side-note p{margin:0 0 12px}.tools{gap:20px}.input-card{padding:22px}.result-card{padding:25px}.answer strong{font-size:59px}}@media(max-width:400px){.header nav a:first-child{display:none}.shell{padding-left:14px;padding-right:14px}.input-card{padding:19px}.brand{font-size:20px}.method-options{gap:7px}.method{padding:9px;font-size:11px}.method small{font-size:10px}.result-card{padding:22px}.answer strong{font-size:49px}.equivalents dd{font-size:16px}.row{gap:9px}.tool-card{padding:19px}.footer .shell{display:block}.footer p{margin:5px 0}.explanation{margin-bottom:28px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{body{background:white;color:#111}.header nav,.actions,.profiles,.text-button,.scenario,.footer,.custom-table,.intro-mark,.side-note,.print-button{display:none}.shell{max-width:none;padding:12px}.app{grid-template-columns:1fr 1fr}.result-card{background:#f2f5ef;border:1px solid #999;color:#111}.result-card *{color:#111!important}.result-card:after{display:none}.card{break-inside:avoid}.tools{grid-template-columns:1fr}.explanation{display:block;margin-top:30px}.explanation details p{display:block}.only-card .header,.only-card main,.only-card .footer{display:none}.only-card .print-card{display:block;margin:40px;border:2px solid #246448;border-radius:24px;padding:45px;color:#163d31}.print-card h2{font-size:35px;letter-spacing:-1px;line-height:1.2}.print-card .print-distance{font-size:70px;font-weight:700;margin:20px 0}.print-card .print-message{font-size:20px}.print-card .print-detail{font-size:14px;margin-top:40px}.print-card .print-lines{margin-top:50px;line-height:3;border-top:1px solid #abc0a0;font-size:14px}}
