:root{--ink:#20394b;--muted:#586c78;--paper:#fafbf9;--card:#fff;--green:#254f68;--green-dark:#183a50;--lime:#bd542f;--line:#d3dce0;--accent:#bd542f;--pale:#edf2f4;--mono:ui-monospace,Consolas,monospace;--serif:Georgia,"Times New Roman",serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:125px}body{margin:0;color:var(--ink);background:var(--paper);font-family:"Segoe UI",Arial,sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:var(--green);text-underline-offset:4px}a:hover{color:var(--accent)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}button,input,select{font:inherit}button{cursor:pointer}.wrap{width:min(1120px,calc(100% - 48px));margin-inline:auto}.site-header{border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0;z-index:10}.nav{min-height:88px;display:flex;justify-content:space-between;align-items:center;gap:24px}.brand{display:inline-flex;gap:10px;align-items:center;font-size:1.14rem;font-weight:750;letter-spacing:-.045em;color:var(--ink);text-decoration:none;white-space:nowrap}.brand:before{content:"e";font-family:var(--serif);font-style:italic;background:var(--green-dark);color:#fff;width:34px;height:36px;display:grid;place-items:center;font-size:1.7rem;line-height:1;border-bottom:3px solid var(--accent)}.brand span{color:var(--ink);margin-left:-10px}.nav-links{display:flex;gap:30px;align-items:center}.nav-links a{font-size:.9rem;font-weight:600;text-decoration:none;color:var(--ink);padding-block:12px}.nav-links a:hover{text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:9px}.eyebrow{font:600 .7rem/1.5 var(--mono);text-transform:uppercase;letter-spacing:.12em;color:var(--accent);margin:0 0 18px}h1,h2,h3{color:var(--ink);line-height:1.13}h1,h2{font-family:var(--serif);font-weight:400;letter-spacing:-.045em}h1{font-size:clamp(2.8rem,5.2vw,4.8rem);margin:12px 0 26px;max-width:900px}h2{font-size:clamp(1.8rem,3vw,2.6rem);margin:0 0 24px}h3{font-size:1.1rem;line-height:1.35;letter-spacing:-.02em;margin:0 0 12px}p{margin:0 0 20px}.lede{font-size:1.12rem;color:var(--muted);max-width:65ch;line-height:1.8}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.button{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:11px 20px;border:1px solid var(--green-dark);border-radius:3px;background:var(--green-dark);color:#fff;text-decoration:none;font-size:.9rem;font-weight:650}.button:hover{background:var(--green);color:#fff}.button.secondary{border-color:var(--line);background:transparent;color:var(--ink)}
.hero{padding:62px 0 48px}.hero-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:75px;align-items:center}.hero-copy .lede{max-width:47ch;font-size:1.06rem}.hero-copy h1{font-size:clamp(3rem,5.5vw,5rem);line-height:1.05;margin-bottom:24px}.hero-copy h1 em{font-weight:400;font-style:italic;color:var(--accent)}.hero-footnote{font:.73rem/1.6 var(--mono);color:var(--muted);margin-top:20px}.quick-sheet{background:var(--card);border:1px solid #bacbd3;border-radius:4px;box-shadow:7px 8px 0 var(--pale);padding:27px 30px}.sheet-heading{display:flex;justify-content:space-between;gap:16px;align-items:center;padding-bottom:16px;border-bottom:2px solid var(--ink);margin-bottom:18px}.sheet-heading h2{font-size:1.55rem;margin:0}.sheet-heading span{font:.65rem var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.quick-fields{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}.quick-sheet label{font-size:.74rem}.quick-sheet input{font:.98rem var(--mono);padding-inline:9px}.quick-total{border-block:1px solid var(--line);margin:22px 0 14px;padding:18px 0;display:flex;justify-content:space-between;align-items:center;gap:12px}.quick-total span{font-size:.85rem}.quick-total output{font:2.15rem/1 var(--mono);letter-spacing:-.06em;color:var(--green-dark)}.quick-details{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:.75rem}.quick-details output{font-family:var(--mono);white-space:nowrap}.quick-sheet .sheet-note{font-size:.75rem;color:var(--muted);margin:14px 0 0;line-height:1.65}.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;border-block:1px solid var(--line);margin:0 auto 12px;padding:20px 0}.stat{display:flex;gap:12px;align-items:baseline}.stat .stat-index{font:.69rem var(--mono);color:var(--accent)}.stat strong{display:block;font-size:.83rem;font-weight:650}.stat span:not(.stat-index){display:block;font-size:.77rem;color:var(--muted)}.section{padding:54px 0}.section.white{background:var(--pale);border-block:1px solid var(--line)}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}.section-heading h2{margin:0}.section-heading>a{font-size:.84rem;white-space:nowrap}.section-heading .eyebrow{margin-bottom:10px}.tool-list{display:grid;grid-template-columns:1fr 1fr;column-gap:54px}.tool-row{display:grid;grid-template-columns:34px 1fr 24px;align-items:center;gap:13px;border-top:1px solid #bdccd3;padding:23px 0;text-decoration:none;color:var(--ink)}.tool-number{font:.7rem var(--mono);color:var(--accent);align-self:start;padding-top:3px}.tool-row strong{font-size:1.02rem;font-weight:650;display:block;line-height:1.4}.tool-row small{display:block;color:var(--muted);font-size:.82rem;line-height:1.5;margin-top:5px}.tool-arrow{font-size:1.35rem}.tool-row:hover strong{color:var(--accent)}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);border-block:1px solid var(--line)}.topic-item{padding:26px 20px;text-decoration:none;color:var(--ink);border-right:1px solid var(--line)}.topic-item:first-child{padding-left:0}.topic-item:last-child{border-right:0}.topic-label{display:block;font:.64rem var(--mono);letter-spacing:.1em;color:var(--accent);margin-bottom:15px}.topic-item h3{font-family:var(--serif);font-weight:400;font-size:1.4rem}.topic-item p{font-size:.83rem;color:var(--muted);margin-bottom:12px}.topic-link{font-size:.78rem}.reading-grid{display:grid;grid-template-columns:1.2fr 1fr;column-gap:64px}.reading-feature{grid-row:span 2;padding:10px 38px 10px 0;border-right:1px solid var(--line);text-decoration:none}.reading-feature h3{font-family:var(--serif);font-size:2rem;font-weight:400;margin:14px 0}.reading-feature p{color:var(--muted);font-size:.93rem}.reading-link{padding:15px 0 22px;border-bottom:1px solid var(--line);text-decoration:none}.reading-link strong{display:block;font-size:1rem}.reading-link span{display:block;font-size:.85rem;color:var(--muted);margin-top:7px}.text-link{font-size:.84rem}.method-note{display:grid;grid-template-columns:1fr 1.35fr;gap:70px;padding-block:28px;border-top:2px solid var(--ink)}.method-note h2{font-size:2.1rem}.method-note p{font-size:.94rem;max-width:67ch}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.card{background:var(--card);border:1px solid var(--line);border-radius:3px;padding:25px;box-shadow:none}.card p{color:var(--muted);font-size:.94rem}.card a{font-size:.86rem}.card .status{font:.65rem var(--mono);text-transform:uppercase;color:var(--muted)}.card.featured{border-top:2px solid var(--accent)}.article{max-width:1000px;padding:46px 0 78px}.article>p,.article>ul,.article>ol,.article>section>p,.article>section>ul,.article>section>ol,.article>[data-final-remediation]>section>p{max-width:76ch}.article h1{font-size:clamp(2.4rem,4.5vw,3.8rem);max-width:25ch}.article h2{margin-top:43px;font-size:clamp(1.6rem,2.8vw,2.15rem);max-width:32ch}.article li+li{margin-top:8px}.breadcrumbs{color:var(--muted);font-size:.75rem;margin-bottom:31px}.breadcrumbs a{color:var(--muted)}.breadcrumbs span{margin-inline:7px}.meta-line{display:flex;flex-wrap:wrap;gap:8px 20px;font:.71rem/1.7 var(--mono);color:var(--muted);margin:0 0 29px;padding-bottom:18px;border-bottom:1px solid var(--line)}.calculator-layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:28px;align-items:start;margin:30px 0 43px}.calculator{background:var(--pale);padding:27px;border:1px solid var(--line);border-radius:4px}.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 20px}label{font-weight:600;font-size:.85rem;display:block;line-height:1.5;min-width:0}label small{display:block;color:var(--muted);font-weight:400;margin-top:5px;font-size:.76rem}input,select{width:100%;min-width:0;min-height:46px;margin-top:8px;padding:10px 12px;border:1px solid #9aaeb9;border-radius:2px;background:#fff;color:var(--ink);font:.97rem var(--mono)}select{font-family:inherit;font-size:.86rem}input:focus,select:focus{outline:2px solid var(--green);outline-offset:2px;border-color:var(--green)}.result{background:#fff;color:var(--ink);padding:26px;border:1px solid var(--line);border-top:3px solid var(--accent);border-radius:3px;position:sticky;top:110px}.result>span{font:.7rem/1.6 var(--mono);text-transform:uppercase;letter-spacing:.04em}.result .big{font:clamp(2.05rem,4vw,3rem)/1.15 var(--mono);letter-spacing:-.07em;color:var(--green-dark);margin:16px 0 8px;overflow-wrap:anywhere}.result .sub{font-size:.86rem;color:var(--muted)}.result-list{list-style:none;padding:0;margin:22px 0 0;border-top:1px solid var(--line)}.result-list li{display:flex;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-size:.79rem}.result-list strong{font-family:var(--mono);font-weight:500;text-align:right;overflow-wrap:anywhere;min-width:0}.result-note{color:var(--muted);font-size:.73rem;margin:18px 0 0;line-height:1.65}.formula{background:var(--pale);border-left:3px solid var(--green);padding:20px 22px;font-family:var(--mono);font-size:.84rem;line-height:1.8;overflow-x:auto;margin:24px 0}.formula strong{font-weight:500}.notice{border-left:3px solid var(--accent);background:#f5eee7;padding:18px 22px;margin:28px 0;font-size:.88rem}.source-list{padding-left:20px;font-size:.86rem}.source-list li+li{margin-top:10px}.cluster-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 26px;margin:24px 0;border-top:1px solid var(--line)}.cluster-links a{padding:17px 2px;border-bottom:1px solid var(--line);font-size:.89rem;text-decoration:none;font-weight:600;line-height:1.6}.cluster-links a:hover{text-decoration:underline}.table-wrap{overflow-x:auto;margin:24px 0}table{width:100%;border-collapse:collapse;background:var(--card);font-size:.84rem;font-variant-numeric:tabular-nums}th,td{text-align:left;padding:14px 16px;vertical-align:top;border:0;border-bottom:1px solid var(--line)}th{background:var(--pale);font-size:.76rem;font-weight:650;border-top:2px solid var(--ink)}tbody tr:nth-child(even){background:#f7f9f9}.update-log{border-top:1px solid var(--line);margin-top:42px;padding-top:20px;color:var(--muted);font-size:.77rem}.faq details{border-top:1px solid var(--line);padding:18px 0}.faq details:last-child{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;font-weight:600;font-size:.93rem}.faq details p{margin:14px 0 0;font-size:.94rem;max-width:75ch}.footer{background:var(--green-dark);color:#dce5ea;padding:32px 0;border-top:3px solid var(--accent)}.footer-inner{display:flex;justify-content:space-between;gap:22px;flex-wrap:wrap;font-size:.75rem}.footer-links{display:flex;gap:20px;flex-wrap:wrap}.footer a{color:#e7edf1;text-decoration:none}.footer a:hover{text-decoration:underline}.home-footer-caption{font-family:var(--serif);font-size:1.6rem;color:#fff;margin-bottom:22px}
@media(max-width:1000px){.hero-layout{gap:36px}.quick-sheet{padding:23px}.tool-list{column-gap:28px}.topic-grid{grid-template-columns:1fr 1fr}.topic-item{border-bottom:1px solid var(--line)}.topic-item:nth-child(2){border-right:0}.topic-item:nth-child(3){padding-left:0;border-bottom:0}.topic-item:nth-child(4){border-bottom:0}}
@media(max-width:780px){.wrap{width:calc(100% - 36px)}.nav{min-height:74px;flex-wrap:wrap;gap:4px;padding-block:13px}.brand{font-size:1.04rem}.brand:before{width:27px;height:29px;font-size:1.4rem}.nav-links{width:100%;justify-content:space-between;gap:8px}.nav-links a{padding:7px 0;font-size:.78rem}.hero{padding:35px 0 31px}.hero-layout{grid-template-columns:1fr;gap:30px}.hero-copy h1{font-size:3.4rem}.hero-copy .lede{font-size:1rem}.hero-copy h1 br{display:none}.quick-fields{gap:10px}.quick-sheet{padding:23px 20px}.quick-total output{font-size:2rem}.stat-strip{grid-template-columns:1fr;gap:11px;padding-block:17px}.stat{gap:15px}.stat strong{display:inline;font-size:.8rem}.stat span:not(.stat-index){display:inline;margin-left:9px;font-size:.72rem}.section{padding:37px 0}.section-heading{align-items:start;gap:14px}.section-heading h2{font-size:1.9rem}.section-heading>a{font-size:.73rem}.tool-list{grid-template-columns:1fr}.tool-row{padding:18px 0}.tool-row strong{font-size:.96rem}.tool-row small{font-size:.77rem}.topic-item{padding:20px 14px}.topic-item h3{font-size:1.25rem}.topic-item p{font-size:.78rem}.reading-grid{grid-template-columns:1fr;gap:0}.reading-feature{grid-row:auto;border-right:0;border-bottom:1px solid var(--line);padding:0 0 24px}.reading-feature h3{font-size:1.8rem}.reading-link{padding:19px 0}.method-note{grid-template-columns:1fr;gap:0;padding-top:24px}.method-note h2{font-size:1.9rem}.grid{grid-template-columns:1fr}.article{padding:28px 0 46px}.article h1{font-size:2.5rem}.article h2{font-size:1.75rem;margin-top:34px}.article .lede{font-size:1rem}.breadcrumbs{font-size:.7rem;margin-bottom:21px}.meta-line{font-size:.65rem;gap:5px 12px}.calculator-layout{grid-template-columns:1fr;gap:18px}.calculator{padding:22px}.field-grid{grid-template-columns:1fr;gap:16px}.result{position:static;padding:23px}.result .big{font-size:2.7rem}.result-list li{font-size:.83rem}.cluster-links{grid-template-columns:1fr}.formula{font-size:.77rem;padding:17px}th,td{padding:11px;min-width:90px}.footer-inner{font-size:.69rem}.footer-links{gap:13px}.home-footer-caption{font-size:1.4rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
