:root{
  --paper:#e9e5dd;--paper-2:#f3f0e9;--ink:#1c1b19;--ink-soft:#56524b;
  --line:#c9c3b6;--line-dk:#1c1b19;--amber:#d8511d;--amber-deep:#b03f12;
  --slate:#4a5a5e;--chalk:#fbfaf7;
  --disp:'Archivo',sans-serif;--body:'Hanken Grotesk',sans-serif;--mono:'JetBrains Mono',monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--body);color:var(--ink);background:var(--paper);line-height:1.55;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:34px 34px;background-position:-1px -1px;}
.tape{height:10px;width:100%;background:repeating-linear-gradient(135deg,var(--ink) 0 18px,var(--amber) 18px 36px);}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
a{color:var(--amber-deep)}
h1,h2,h3{font-family:var(--disp)}

/* header */
header{border-bottom:2px solid var(--line-dk);background:var(--paper);position:sticky;top:0;z-index:40}
.hd{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.brand .cube{width:30px;height:30px}
.brand b{font-family:var(--disp);font-weight:900;font-size:20px;letter-spacing:-.02em;text-transform:uppercase}
.brand b span{color:var(--amber)}
.brand .tld{font-family:var(--mono);font-size:12px;color:var(--ink-soft)}
nav.main{display:flex;gap:24px}
nav.main a{font-family:var(--mono);font-size:12.5px;text-transform:uppercase;letter-spacing:.05em;
  color:var(--ink-soft);text-decoration:none;padding:6px 0;border-bottom:2px solid transparent;transition:.15s}
nav.main a:hover{color:var(--ink);border-color:var(--amber)}
.navtoggle{display:none;font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.1em;
  background:var(--ink);color:var(--chalk);border:none;padding:9px 14px;cursor:pointer}
@media(max-width:880px){
  nav.main{display:none;position:absolute;top:74px;left:0;right:0;background:var(--paper);
    flex-direction:column;gap:0;border-bottom:2px solid var(--line-dk);padding:8px 28px}
  nav.main.open{display:flex}
  nav.main a{padding:12px 0;border-bottom:1px solid var(--line)}
  .navtoggle{display:block}
}

/* crumbs */
.crumbs{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.07em;
  color:var(--ink-soft);padding:18px 0 0}
.crumbs a{color:var(--ink-soft);text-decoration:none}.crumbs a:hover{color:var(--amber-deep)}

/* hero */
.hero{padding:42px 0 26px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);
  font-size:12px;text-transform:uppercase;letter-spacing:.14em;color:var(--amber-deep);margin-bottom:16px}
.eyebrow::before{content:"";width:30px;height:2px;background:var(--amber)}
h1{font-weight:900;font-size:clamp(34px,5.4vw,60px);line-height:.96;letter-spacing:-.025em;text-transform:uppercase;max-width:16ch}
h1 em{font-style:normal;color:var(--amber)}
.lede{margin-top:16px;max-width:56ch;font-size:17px;color:var(--ink-soft)}
.lede b{color:var(--ink);font-weight:600}

/* calculator widget */
.grid{display:grid;grid-template-columns:1.05fr .95fr;gap:0;margin-top:32px;
  border:2px solid var(--line-dk);background:var(--chalk);box-shadow:14px 14px 0 rgba(28,27,25,.10)}
@media(max-width:880px){.grid{grid-template-columns:1fr}}
.col-in{padding:28px 28px 30px;border-right:2px solid var(--line-dk)}
@media(max-width:880px){.col-in{border-right:none;border-bottom:2px solid var(--line-dk)}}
.panel-h{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:20px}
.panel-h h2{font-weight:700;font-size:15px;text-transform:uppercase;letter-spacing:.04em}
.panel-h .no{font-family:var(--mono);font-size:11px;color:var(--ink-soft)}
.cy-dims{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:16px}
.cy-field label{display:block;font-family:var(--mono);font-size:10.5px;text-transform:uppercase;
  letter-spacing:.1em;color:var(--ink-soft);margin-bottom:7px}
.cy-field input,.cy-field select{width:100%;font-family:var(--mono);font-size:16px;font-weight:500;
  padding:11px 12px;border:1.5px solid var(--ink);background:var(--paper-2);color:var(--ink);outline:none}
.cy-field input:focus,.cy-field select:focus{background:#fff;box-shadow:inset 0 -3px 0 var(--amber)}
.cy-inrow{display:grid;grid-template-columns:1.4fr .9fr;gap:8px}
.cy-err{display:none;font-family:var(--mono);font-size:10px;color:var(--amber-deep);margin-top:5px}
.cy-field.bad input{border-color:var(--amber);background:#fbeee8}
.cy-field.bad .cy-err{display:block}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:16px}
.calc-note{font-family:var(--mono);font-size:11.5px;color:var(--slate);
  border-left:3px solid var(--amber);padding:8px 12px;background:var(--paper-2)}

.col-out{padding:28px;background:var(--ink);color:var(--chalk);position:relative;overflow:hidden}
.col-out .tick{position:absolute;inset:0;width:100%;height:100%;opacity:.10;pointer-events:none}
.out-label{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:#a9b0a8}
.result{display:flex;align-items:flex-end;gap:12px;margin:6px 0 4px}
.result .big{font-family:var(--disp);font-weight:900;font-size:clamp(48px,8vw,76px);line-height:.85;letter-spacing:-.03em;color:#fff}
.result .unit{font-family:var(--disp);font-weight:700;font-size:18px;text-transform:uppercase;color:var(--amber);margin-bottom:11px}
.order{font-family:var(--mono);font-size:12.5px;color:#cfd4cd;margin-bottom:20px}
.order b{color:var(--amber);font-weight:700}
.mgrid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.16)}
.cell{background:var(--ink);padding:12px 14px}
.cell .k{font-family:var(--mono);font-size:9.5px;text-transform:uppercase;letter-spacing:.1em;color:#9aa19a}
.cell .v{font-family:var(--mono);font-weight:700;font-size:17px;margin-top:3px;color:#fff}
.cell .v small{font-size:11px;color:var(--amber);font-weight:500}
.cube-box{margin-top:22px;display:flex;align-items:center;gap:16px}
.cube-box .cap{font-family:var(--mono);font-size:11px;color:#9aa19a;line-height:1.5}
.cube-box .cap b{color:var(--chalk)}

/* cost widget */
.cy-cost{border:2px solid var(--line-dk);background:var(--chalk);padding:26px;margin:26px 0;
  box-shadow:10px 10px 0 rgba(28,27,25,.10)}
.cy-cost .crow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
@media(max-width:700px){.cy-cost .crow{grid-template-columns:1fr 1fr}}
.cy-cost .cmp{display:grid;grid-template-columns:1fr 1fr;gap:0;border:2px solid var(--ink)}
.cy-cost .cmp>div{padding:16px}
.cy-cost .cmp .opt:first-child{border-right:2px solid var(--ink)}
.cy-cost .cmp h4{font-family:var(--disp);font-size:13px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}
.cy-cost .cmp .big{font-family:var(--mono);font-weight:700;font-size:22px}
.cy-cost .cmp .sm{font-family:var(--mono);font-size:11px;color:var(--ink-soft)}
.cy-verdict{margin-top:16px;font-family:var(--mono);font-size:14px;background:var(--ink);color:var(--chalk);padding:12px 14px}
.cy-verdict b{color:var(--amber)}

/* sections / prose */
section{margin:30px 0}
.sec-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.sec-head h2{font-weight:700;font-size:22px;text-transform:uppercase;letter-spacing:-.01em}
.sec-head::before{content:"";width:30px;height:2px;background:var(--amber);flex:0 0 auto}
.prose p{margin:0 0 14px;color:var(--ink-soft);max-width:72ch}
.prose h3{font-size:16px;text-transform:uppercase;letter-spacing:.02em;margin:20px 0 8px}
.formula{font-family:var(--mono);font-size:14px;border:1.5px solid var(--ink);background:var(--paper-2);
  padding:14px 16px;margin:14px 0;box-shadow:5px 5px 0 rgba(28,27,25,.1)}

/* cards / cluster */
.cards{display:grid;grid-template-columns:repeat(6,1fr);gap:0;border:2px solid var(--line-dk);background:var(--chalk)}
@media(max-width:880px){.cards{grid-template-columns:repeat(2,1fr)}}
.card{padding:20px 16px;border-right:1.5px solid var(--line);border-bottom:1.5px solid var(--line);
  text-decoration:none;color:var(--ink);transition:.15s;position:relative}
.card:hover{background:var(--ink);color:var(--chalk)}
.card:hover .ic{stroke:var(--amber)}.card:hover p{color:#b9bdb6}
.card .ic{width:30px;height:30px;stroke:var(--ink);fill:none;stroke-width:1.6;margin-bottom:12px;display:block}
.card h3{font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:.02em}
.card p{font-size:12px;color:var(--ink-soft);margin-top:3px}
.card .soon{position:absolute;top:10px;right:10px;font-family:var(--mono);font-size:8px;
  letter-spacing:.1em;color:var(--amber);border:1px solid var(--amber);padding:1px 4px;border-radius:2px}

/* faq */
details.faq{border:1.5px solid var(--ink);background:var(--chalk);margin:0 0 -1.5px}
details.faq summary{cursor:pointer;font-family:var(--disp);font-weight:700;font-size:15px;padding:14px 16px;list-style:none}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";float:right;color:var(--amber);font-family:var(--mono)}
details.faq[open] summary::after{content:"\2212"}
details.faq div{padding:0 16px 14px;color:var(--ink-soft);font-size:14.5px}

/* tables */
table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:13px;margin:14px 0;background:var(--chalk)}
th,td{border:1px solid var(--line);padding:8px 12px;text-align:left}
th{background:var(--ink);color:var(--chalk);text-transform:uppercase;font-size:11px;letter-spacing:.06em}

/* footer */
footer{border-top:2px solid var(--line-dk);background:var(--paper);margin-top:40px}
.ft{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;padding:34px 0}
@media(max-width:760px){.ft{grid-template-columns:1fr 1fr}}
.ft h4{font-family:var(--disp);font-size:13px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:12px}
.ft a{display:block;font-family:var(--mono);font-size:12.5px;color:var(--ink-soft);text-decoration:none;padding:4px 0}
.ft a:hover{color:var(--amber-deep)}
.ft p{font-size:13px;color:var(--ink-soft);max-width:34ch}
.legal{border-top:1px solid var(--line);padding:16px 0;font-family:var(--mono);font-size:11px;color:var(--ink-soft);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* load anim */
.rise{opacity:0;transform:translateY(14px);animation:rise .6s cubic-bezier(.2,.7,.3,1) forwards}
@keyframes rise{to{opacity:1;transform:none}}
.d1{animation-delay:.05s}.d2{animation-delay:.13s}.d3{animation-delay:.22s}.d4{animation-delay:.32s}


/* cost estimator */
.cy-estimator{margin-top:32px}
.est-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:0;border:2px solid var(--line-dk);background:var(--chalk);box-shadow:14px 14px 0 rgba(28,27,25,.10)}
@media(max-width:880px){.est-grid{grid-template-columns:1fr}}
.est-in{padding:26px;border-right:2px solid var(--line-dk)}
@media(max-width:880px){.est-in{border-right:none;border-bottom:2px solid var(--line-dk)}}
.est-out{padding:26px;background:var(--ink);color:var(--chalk)}
.est-block{margin-bottom:18px}
.est-block h3{font-family:var(--disp);font-size:13px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:10px;color:var(--ink)}
.est-opt{display:flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12.5px;margin-bottom:8px;color:var(--ink-soft)}
.est-opt input[type=checkbox]{width:16px;height:16px;accent-color:var(--amber)}
.est-prices{border-top:1.5px solid var(--line);margin-top:16px;padding-top:14px}
.est-prices summary{font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.06em;cursor:pointer;color:var(--amber-deep)}
.est-prices .pgrid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
#priceStamp{font-family:var(--mono);font-size:10.5px;color:var(--slate);margin-top:10px;display:block}
.est-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:13px;background:transparent}
.est-table td{padding:9px 4px;border:none;border-bottom:1px solid rgba(255,255,255,.16);color:#f4f1ea;background:transparent}
.est-table td:last-child{color:#fff;font-weight:700;text-align:right}
.est-total{display:flex;justify-content:space-between;align-items:baseline;margin-top:16px;padding-top:14px;border-top:2px solid var(--amber)}
.est-total .lbl{font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#a9b0a8}
.est-total .amt{font-family:var(--disp);font-weight:900;font-size:38px;color:#fff}
.est-actions{display:flex;gap:10px;margin-top:18px}
.btn{font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.06em;padding:11px 16px;border:none;cursor:pointer;background:var(--amber);color:#fff;font-weight:700}
.btn.ghost{background:transparent;color:var(--chalk);border:1.5px solid rgba(255,255,255,.4)}
.est-cy{font-family:var(--mono);font-size:12px;color:#a9b0a8;margin-top:6px}
.est-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}

/* shared copy / pdf action bar */
.cy-actions{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.cy-btn{font-family:var(--mono);font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;
  padding:10px 14px;border:1.5px solid rgba(255,255,255,.35);background:transparent;color:var(--chalk);
  cursor:pointer;transition:.15s;font-weight:700}
.cy-btn:hover{border-color:var(--amber);color:var(--amber)}
.cy-btn.cy-pdf{background:var(--amber);border-color:var(--amber);color:#fff}
.cy-btn.cy-pdf:hover{background:var(--amber-deep);color:#fff}
/* on light-panel widgets (cost comparison) the bar sits on light bg */
.cy-cost .cy-actions .cy-btn{border-color:var(--ink);color:var(--ink)}
.cy-cost .cy-actions .cy-btn:hover{border-color:var(--amber);color:var(--amber-deep)}
.cy-cost .cy-actions .cy-btn.cy-pdf{background:var(--amber);border-color:var(--amber);color:#fff}

/* free-tools network grid */
.ftgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:2px solid var(--line-dk);background:var(--chalk)}
@media(max-width:880px){.ftgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.ftgrid{grid-template-columns:1fr}}
.ftcard{display:block;padding:18px 18px;border-right:1.5px solid var(--line);border-bottom:1.5px solid var(--line);
  text-decoration:none;color:var(--ink);transition:.15s}
.ftcard:hover{background:var(--ink);color:var(--chalk)}
.ftcard:hover .ftdesc{color:#b9bdb6}
.fturl{display:block;font-family:var(--mono);font-weight:700;font-size:14px;color:#1257d6;margin-bottom:5px;word-break:break-word}
.ftdesc{display:block;font-size:12.5px;color:var(--ink-soft);line-height:1.45}
.ftcard:hover .fturl{color:#5b8efb}

/* reference tables in prose (deepened pages) */
.reftable{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px;background:var(--chalk);border:2px solid var(--line-dk)}
.reftable caption{text-align:left;font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--slate);padding:0 0 8px}
.reftable th{background:var(--ink);color:var(--chalk);font-family:var(--mono);font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;text-align:left;padding:9px 12px}
.reftable td{padding:8px 12px;border-bottom:1px solid var(--line)}
.reftable tr:nth-child(even) td{background:#f7f5f0}
.reftable td:first-child{font-weight:700}
.worked{background:var(--paper);border-left:4px solid var(--amber);padding:14px 18px;margin:16px 0;font-size:14px;line-height:1.6}
.worked b{font-family:var(--mono)}