:root{--ink:#162b2a;--muted:#60706d;--paper:#f4f2e9;--card:#fffefa;--green:#08765f;--lime:#d9ed89;--line:#d9ddd3;--blue:#315fa8}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px Arial,sans-serif}a{color:inherit}.wrap{width:min(1060px,calc(100% - 34px));margin:auto}header{background:var(--ink);color:white}.head{height:72px;display:flex;align-items:center;gap:32px}.brand{font-size:27px;font-weight:900;text-decoration:none}.brand span{color:var(--lime)}nav{margin-left:auto;display:flex;gap:22px}nav a{font-size:14px;font-weight:700;text-decoration:none}.hero{padding:62px 0 35px;display:grid;grid-template-columns:1.2fr .8fr;gap:35px;align-items:end}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:800;color:var(--green)}h1{font:700 clamp(40px,6vw,68px) Georgia,serif;line-height:1;margin:10px 0 18px;letter-spacing:-2px}.hero p{color:var(--muted);line-height:1.6;max-width:650px}.hero-note{border-left:5px solid var(--lime);padding:18px 20px;background:var(--card);font-size:14px}.apps{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding:20px 0 55px}.app{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:28px;text-decoration:none;min-height:210px;display:flex;flex-direction:column}.app:hover{border-color:var(--green);transform:translateY(-2px)}.app small{color:var(--green);font-weight:800;letter-spacing:1px}.app h2{font:32px Georgia,serif;margin:16px 0 10px}.app p{color:var(--muted);line-height:1.5}.app b{margin-top:auto;color:var(--green)}.ad{min-height:250px}.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:28px;padding:45px 0}.tool h1{font-size:50px}.lede{font-size:20px;color:var(--muted);line-height:1.55}.panel,.result,.method{background:var(--card);border:1px solid var(--line);border-radius:9px;padding:27px}.panel{position:sticky;top:18px}.field{display:block;margin-bottom:18px;font-weight:800}.field span{display:block;margin-bottom:8px}.field input,.field select{width:100%;padding:15px;border:1px solid #b9c3bd;border-radius:6px;font:inherit;background:white}.field small{display:block;color:var(--muted);font-weight:400;margin-top:7px}.primary{width:100%;border:0;border-radius:6px;padding:17px;background:var(--green);color:white;font-weight:900;font-size:17px;cursor:pointer}.result{margin:24px 0;border-top:6px solid var(--green)}.result[hidden]{display:none}.result small{text-transform:uppercase;letter-spacing:1.5px;color:var(--muted)}.big{font:700 48px Georgia,serif;margin:8px 0;color:var(--green)}.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;margin-top:20px}.metric{background:#edf5ef;padding:15px;border-radius:6px;min-width:0;overflow-wrap:anywhere}.metric span{display:block;font-size:12px;color:var(--muted)}.metric b{display:block;margin-top:6px}.method{margin:24px 0;line-height:1.6}.method h2{font:29px Georgia,serif}.method a{color:var(--blue)}table{width:100%;border-collapse:collapse;margin-top:18px}th,td{text-align:right;padding:11px;border-bottom:1px solid var(--line)}th:first-child,td:first-child{text-align:left}.disclaimer{font-size:13px;color:var(--muted)}footer{background:var(--ink);color:white;padding:28px 0;margin-top:40px}.foot{display:flex;gap:20px;align-items:center}.foot a:last-of-type{margin-left:auto}@media(max-width:760px){nav{gap:10px}.head nav a:first-child{display:none}.hero,.tool-layout{grid-template-columns:1fr}.hero{padding-top:40px}.apps{grid-template-columns:1fr}.panel{position:static}.metrics{grid-template-columns:1fr}.tool h1{font-size:40px}.foot{flex-wrap:wrap}.foot a:last-of-type{margin-left:0}}
.rule72-tool{margin:20px 0;padding:20px;background:#edf5ef;border-left:5px solid var(--green);display:grid;grid-template-columns:1fr auto;gap:12px;align-items:end}.rule72-tool label span{display:block;font-weight:800;margin-bottom:7px}.rule72-tool input{width:100%;padding:12px;border:1px solid #aebbb3;border-radius:5px;font:inherit}.rule72-tool button{padding:13px 18px;border:0;border-radius:5px;background:var(--ink);color:white;font-weight:800}.rule72-tool div{grid-column:1/-1;display:flex;gap:16px;align-items:center}.rule72-tool div[hidden]{display:none}.rule72-tool strong{color:var(--green);font-size:20px}.rule72-tool span{color:var(--muted);font-size:14px}@media(max-width:520px){.rule72-tool{grid-template-columns:1fr}.rule72-tool button{width:100%}.rule72-tool div{display:grid;gap:5px}}

.advanced{border-top:1px solid var(--line);margin:4px 0 20px;padding-top:14px}.advanced summary{cursor:pointer;font-weight:900;color:var(--green);margin-bottom:17px}.advanced[open] summary{margin-bottom:20px}