/* EstimaHome: field-guide style. Paper, ink, one safety-orange accent, 1px rules. */
@font-face{font-family:"Plex Sans";src:url(/assets/fonts/ibm-plex-sans-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex Sans";src:url(/assets/fonts/ibm-plex-sans-latin-600-normal.woff2) format("woff2");font-weight:600 700;font-display:swap}
@font-face{font-family:"Plex Condensed";src:url(/assets/fonts/ibm-plex-sans-condensed-latin-600-normal.woff2) format("woff2");font-weight:600 700;font-display:swap}
@font-face{font-family:"Plex Mono";src:url(/assets/fonts/ibm-plex-mono-latin-500-normal.woff2) format("woff2");font-weight:400 600;font-display:swap}

:root{
  --paper:#f6f4ee;--sheet:#fffdf8;--tint:#ece8dd;--ink:#191917;--ink-2:#47463f;--rule:#c9c4b6;--rule-2:#dedacd;
  --accent:#e8590c;--accent-ink:#b03f05;
  --sans:"Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --cond:"Plex Condensed","Arial Narrow","Roboto Condensed",var(--sans);
  --mono:"Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --max:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1rem/1.6 var(--sans)}
img,svg{display:block;max-width:100%}
a{color:var(--ink);text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:3px}
a:hover{color:var(--accent-ink)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--ink);color:var(--paper);padding:.5rem 1rem}
.skip:focus{left:0}
[hidden]{display:none!important}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1.25rem}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:500}
h1,h2,h3{font-family:var(--cond);font-weight:600;line-height:1.15;letter-spacing:-.005em;margin:0}
h1{font-size:clamp(2rem,4.5vw,2.9rem)}
h2{font-size:1.45rem}
h3{font-size:1.1rem}

/* Header */
.site-header{border-top:4px solid var(--accent);border-bottom:1px solid var(--ink);background:var(--paper);position:relative;z-index:20}
.bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:60px}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;font-family:var(--cond);font-weight:600;font-size:1.35rem;letter-spacing:.01em}
.brand .mark{width:28px;height:28px}
.site-header nav{display:flex;align-items:center;gap:1.4rem}
.site-header nav>a,.menu summary{font-family:var(--cond);font-weight:600;font-size:1.02rem;text-decoration:none;cursor:pointer}
.site-header nav>a[aria-current=page]{text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:6px}
.menu{position:static}
.menu summary{list-style:none;display:flex;align-items:center;gap:.35rem;padding:.4rem 0}
.menu summary::-webkit-details-marker{display:none}
.menu summary::after{content:"";width:.45rem;height:.45rem;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-2px) rotate(45deg)}
.menu[open] summary::after{transform:translateY(1px) rotate(-135deg)}
.menu-panel{position:absolute;left:0;right:0;top:100%;background:var(--sheet);border-bottom:1px solid var(--ink);border-top:1px solid var(--ink);display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1.5rem;padding:1.25rem max(1.25rem,calc((100vw - var(--max))/2 + 1.25rem))}
.menu-h{font-family:var(--cond);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-2);margin:0 0 .4rem;border-bottom:1px solid var(--rule);padding-bottom:.3rem}
.menu-panel ul{list-style:none;margin:0;padding:0}
.menu-panel li a{display:block;padding:.2rem 0;text-decoration:none}
.menu-panel li a:hover,.menu-panel li a[aria-current=page]{text-decoration:underline;text-decoration-color:var(--accent)}
.menu-all{grid-column:1/-1;margin:0;border-top:1px solid var(--rule);padding-top:.6rem;font-family:var(--cond);font-weight:600}
@media(max-width:860px){.menu-panel{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}}
@media(max-width:480px){.site-header nav{gap:1rem}.brand{font-size:1.2rem}.menu-panel{grid-template-columns:1fr 1fr}}

/* Page head */
main{padding:1.25rem 0 3.5rem}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.35rem;margin:0 0 1rem;padding:0;font-size:.85rem;color:var(--ink-2)}
.crumbs li+li::before{content:"/";margin-right:.35rem;color:var(--rule)}
.crumbs a{text-decoration-thickness:1px}
.page-head{border-bottom:1px solid var(--ink);padding-bottom:1rem;margin-bottom:1.5rem}
.lede{max-width:68ch;margin:.6rem 0 0;color:var(--ink-2);font-size:1.06rem}

/* Calculator layout */
.tool{display:grid;grid-template-columns:1fr;gap:1.5rem;align-items:start}
@media(min-width:960px){.tool{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:2.5rem}.tool-out{position:sticky;top:1rem}}
.inputs fieldset{border:0;margin:0;padding:0;min-width:0}
.inputs legend,.group summary{font-family:var(--cond);font-weight:600;font-size:.82rem;text-transform:uppercase;letter-spacing:.09em;color:var(--ink);padding:0}
.inputs legend{border-bottom:2px solid var(--ink);width:100%;padding-bottom:.35rem;margin-bottom:.4rem}
.field{padding:.55rem 0;border-bottom:1px solid var(--rule-2)}
.field label{display:block;font-size:.93rem;font-weight:600;margin-bottom:.3rem}
.control{display:flex;align-items:stretch;border:1px solid var(--ink);background:var(--sheet)}
.control:focus-within{outline:3px solid var(--accent);outline-offset:1px}
.control input,.control select{flex:1;min-width:0;border:0;background:transparent;font:500 1rem var(--mono);color:var(--ink);padding:.55rem .65rem;min-height:44px;border-radius:0;appearance:none}
.control select{font-family:var(--sans);font-weight:400;background-image:linear-gradient(45deg,transparent 50%,var(--ink) 50%),linear-gradient(135deg,var(--ink) 50%,transparent 50%);background-position:calc(100% - 16px) 50%,calc(100% - 11px) 50%;background-size:5px 5px;background-repeat:no-repeat;padding-right:2rem}
.control input:focus,.control select:focus{outline:none}
.unit{display:flex;align-items:center;padding:0 .65rem;border-left:1px solid var(--rule);background:var(--tint);font:500 .82rem var(--mono);color:var(--ink-2);white-space:nowrap}
.help{margin:.3rem 0 0;font-size:.82rem;color:var(--ink-2)}
.group{border-bottom:1px solid var(--rule);margin-top:1rem}
.group summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:.5rem;padding:.55rem 0;border-bottom:2px solid var(--ink)}
.group summary::-webkit-details-marker{display:none}
.group summary::before{content:"+";font:600 1rem var(--mono);width:1rem}
.group[open] summary::before{content:"−"}
.group .count{font:500 .75rem var(--mono);color:var(--ink-2)}
.group-note{font-size:.86rem;color:var(--ink-2);margin:.6rem 0 0}
.actions{margin-top:1rem}
button{font:inherit;cursor:pointer}
.btn-quiet{background:transparent;border:1px solid var(--ink);color:var(--ink);padding:.45rem .85rem;min-height:40px;font-family:var(--cond);font-weight:600;letter-spacing:.02em}
.btn-quiet:hover{background:var(--ink);color:var(--paper)}
.errors{border:1px solid var(--accent-ink);border-left-width:4px;background:#fff1e8;padding:.5rem .9rem;margin-bottom:1rem;font-size:.9rem}
.errors p{margin:0;font-weight:600}.errors ul{margin:.3rem 0 0;padding-left:1.1rem}

/* Takeoff sheet */
.sheet{background:var(--sheet);border:1px solid var(--ink)}
.sheet-head{display:flex;justify-content:space-between;align-items:center;gap:.5rem;background:var(--ink);color:var(--paper);padding:.5rem .9rem}
.sheet-head h2{font-size:.9rem;text-transform:uppercase;letter-spacing:.12em}
.sheet-tools{display:flex;gap:.4rem;margin:0}
.sheet-tools .btn-quiet{border-color:var(--paper);color:var(--paper);min-height:32px;padding:.2rem .7rem;font-size:.85rem}
.sheet-tools .btn-quiet:hover{background:var(--paper);color:var(--ink)}
#results{padding:.9rem .9rem 1rem}
.spec{display:flex;flex-wrap:wrap;gap:.25rem 1.1rem;margin:0 0 .8rem;padding-bottom:.6rem;border-bottom:1px dashed var(--rule);font-size:.82rem;color:var(--ink-2)}
.spec b{color:var(--ink)}
.summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:0 0 1rem;border:1px solid var(--rule)}
.summary div{padding:.45rem .6rem;border-right:1px solid var(--rule)}
.summary div:last-child{border-right:0}
.summary dt{font-family:var(--cond);font-weight:600;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-2)}
.summary dd{margin:.1rem 0 0;font-size:1rem;overflow-wrap:anywhere}
@media(max-width:560px){.summary{grid-template-columns:1fr 1fr}.summary div:nth-child(2){border-right:0}.summary div:nth-child(-n+2){border-bottom:1px solid var(--rule)}}
.takeoff{width:100%;border-collapse:collapse;font-size:.92rem;margin-top:.4rem}
.takeoff caption{text-align:left;font-family:var(--cond);font-weight:600;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;padding:.3rem 0;color:var(--ink)}
.takeoff th{font-family:var(--cond);font-weight:600;font-size:.74rem;text-transform:uppercase;letter-spacing:.07em;color:var(--ink-2);text-align:left;border-top:2px solid var(--ink);border-bottom:1px solid var(--ink);padding:.35rem .4rem}
.takeoff td{border-bottom:1px solid var(--rule-2);padding:.45rem .4rem;vertical-align:top}
.takeoff .r{text-align:right;white-space:nowrap}
.takeoff .no{width:2.2rem;color:var(--ink-2)}
.totals{margin:0 0 .8rem;border-top:1px solid var(--ink)}
.totals div{display:flex;justify-content:space-between;gap:1rem;padding:.35rem .4rem}
.totals dt{font-family:var(--cond);font-weight:600}
.totals dd{margin:0}
.totals .range{background:var(--tint);border-left:4px solid var(--accent)}
.totals .range dd{font-weight:600}
@media(max-width:560px){.takeoff .up,.takeoff .no{display:none}}
.notes{margin:.8rem 0 0;padding:0;list-style:none;font-size:.84rem;color:var(--ink-2)}
.notes li{padding-left:1rem;position:relative;margin:.2rem 0}
.notes li::before{content:"–";position:absolute;left:0}
.buy{margin-top:1rem;border-top:2px solid var(--ink);padding-top:.6rem}
.buy h3{font-size:.82rem;text-transform:uppercase;letter-spacing:.09em}
.buy-note{font-size:.84rem;color:var(--ink-2);margin:.3rem 0 0}
.buy ul{list-style:none;margin:.4rem 0 0;padding:0}
.buy li{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:.35rem 0;border-bottom:1px solid var(--rule-2)}
.buy li a{font-family:var(--cond);font-weight:600;white-space:nowrap;text-decoration:none;border-bottom:2px solid var(--accent);padding:.15rem 0}
.buy li a::after{content:" ↗"}
.disclosure{font-size:.78rem;color:var(--ink-2);margin:.5rem 0 0}
.print-only{display:none}

/* Article */
.lower{display:grid;grid-template-columns:1fr;gap:2rem;margin-top:3rem}
@media(min-width:960px){.lower{grid-template-columns:minmax(0,760px) minmax(0,1fr);gap:3.5rem}.rail{position:sticky;top:1rem;align-self:start}}
.article{max-width:760px}
.prose.article{margin-top:0}
.article>section:first-child{margin-top:0}
.article section{border-top:1px solid var(--ink);padding-top:1rem;margin-top:2.25rem}
.rail h2{font-size:.8rem;text-transform:uppercase;letter-spacing:.09em;border-bottom:2px solid var(--ink);padding-bottom:.35rem;margin:0 0 .3rem}
.toc ol{list-style:none;margin:0 0 2rem;padding:0;counter-reset:t}
.toc li{counter-increment:t;padding:.3rem 0;border-bottom:1px solid var(--rule-2);font-size:.93rem}
.toc li::before{content:counter(t,decimal-leading-zero) "  ";font:500 .78rem var(--mono);color:var(--ink-2)}
.toc a{text-decoration:none}.toc a:hover{text-decoration:underline;text-decoration-color:var(--accent)}
@media(max-width:959px){.toc{display:none}}
.article h2{margin-bottom:.6rem}
.article p,.article li{max-width:70ch}
.facts{margin:0;padding:0;list-style:none;counter-reset:f}
.facts li{counter-increment:f;display:grid;grid-template-columns:2rem 1fr;padding:.45rem 0;border-bottom:1px solid var(--rule-2)}
.facts li::before{content:counter(f,decimal-leading-zero);font:500 .85rem var(--mono);color:var(--accent-ink);padding-top:.1rem}
.formulas{margin:.5rem 0 0;padding:0;list-style:none;counter-reset:fo}
.formulas li{counter-increment:fo;display:grid;grid-template-columns:2rem 1fr;align-items:baseline;padding:.4rem 0;border-bottom:1px solid var(--rule-2)}
.formulas li::before{content:counter(fo);font:500 .85rem var(--mono);color:var(--ink-2)}
.formulas code{font:500 .9rem/1.5 var(--mono);overflow-wrap:anywhere}
.faq h3{margin-top:1.1rem}
.faq p{margin:.35rem 0 0}
.related ul{list-style:none;margin:0;padding:0}
.related li{display:grid;grid-template-columns:1fr;gap:.1rem;padding:.5rem 0;border-bottom:1px solid var(--rule-2)}
.related li a{font-family:var(--cond);font-weight:600}
.related li span{color:var(--ink-2);font-size:.93rem}
.cite{margin-top:2.5rem;font-size:.82rem;color:var(--ink-2)}
.prose h2{margin-top:2rem}
.prose .meta{color:var(--ink-2);font-size:.9rem}
.prose ul{padding-left:1.2rem}
.prose .cols{columns:2;padding-left:1.2rem}

/* Home index */
.home-head{border-bottom:2px solid var(--ink)}
.home-head h1{max-width:20ch}
.index{columns:2;column-gap:3rem}
.index-group{break-inside:avoid;margin-bottom:2rem}
@media(max-width:760px){.index{columns:1}}
.index-group h2{font-size:.9rem;text-transform:uppercase;letter-spacing:.1em;border-bottom:2px solid var(--ink);padding-bottom:.35rem}
.index-group ul{list-style:none;margin:0;padding:0}
.index-group li{display:grid;grid-template-columns:minmax(0,10.5rem) 1fr;gap:1rem;padding:.6rem 0;border-bottom:1px solid var(--rule)}
.index-group li a{font-family:var(--cond);font-weight:600;font-size:1.12rem;text-decoration:none}
.index-group li a:hover{text-decoration:underline;text-decoration-color:var(--accent)}
.index-group li span{font-size:.93rem;color:var(--ink-2)}
@media(max-width:480px){.index-group li{grid-template-columns:1fr;gap:0}}
.home-notes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2rem;margin-top:3rem;border-top:1px solid var(--ink);padding-top:1.25rem}
.home-notes h2{font-size:1.05rem}
.home-notes p{margin:.4rem 0 0;font-size:.93rem;color:var(--ink-2)}
@media(max-width:760px){.home-notes{grid-template-columns:1fr;gap:1rem}}

/* Footer */
.site-footer{border-top:4px solid var(--ink);background:var(--tint);padding:2rem 0 1.5rem;font-size:.9rem}
.foot-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:1.25rem}
@media(max-width:960px){.foot-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr 1fr}}
.site-footer h2{font-size:.78rem;text-transform:uppercase;letter-spacing:.09em;margin-bottom:.4rem;border-bottom:1px solid var(--rule);padding-bottom:.3rem}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{padding:.12rem 0}
.site-footer li a{text-decoration:none}
.site-footer li a:hover{text-decoration:underline}
.foot-note{color:var(--ink-2);font-size:.82rem;max-width:90ch;margin:1.25rem 0 0}
.foot-note+.foot-note{margin-top:.4rem}

/* Ads (rendered only when an ad network is configured). Space is reserved so filling a unit cannot shift the page. */
.ad{margin:2rem 0;text-align:center}
.ad-label{margin:0 0 .25rem;font:600 .68rem var(--cond);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.ad ins{min-height:280px}
.ad-below-results{margin:1.5rem 0 0}
@media(min-width:960px){.ad-below-results ins{min-height:250px}.ad-in-content ins{min-height:280px}}
.ad-anchor{position:fixed;left:0;right:0;bottom:0;z-index:50;background:var(--sheet);border-top:1px solid var(--ink);padding:4px 0 calc(4px + env(safe-area-inset-bottom));text-align:center;min-height:58px}
.ad-anchor-close{position:absolute;right:6px;top:-28px;width:28px;height:28px;padding:0;background:var(--sheet);border:1px solid var(--ink);border-bottom:0;font-size:1.1rem;line-height:1}
@media(min-width:768px){.ad-anchor{display:none!important}}
html.has-anchor body{padding-bottom:64px}

/* Print: just the takeoff */
@media print{
  @page{margin:14mm}
  body{background:#fff;color:#000;font-size:10.5pt}
  .site-header,.site-footer,.crumbs,.lede,.inputs,.ad,.ad-anchor,.lower,.sheet-tools,.buy li a,.disclosure,.skip{display:none!important}
  .page-head{border:0;margin:0 0 6mm;padding:0}
  .tool{display:block}.tool-out{position:static}
  .sheet{border:1px solid #000}
  .sheet-head{background:#fff;color:#000;border-bottom:2px solid #000}
  .print-only{display:block;margin:0;padding:.4rem .9rem 0;font-size:9pt}
  .takeoff .up,.takeoff .no{display:table-cell!important}
  .totals .range{background:#fff}
  a{color:#000;text-decoration:none}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}