/* QantAi public pages (calculators and guides). One small stylesheet with the tokens of theme.css and landing.html:
   concrete paper, slate ink, drafting blue for actions, survey orange only on the result's title block.
   Phone first: 16px gutters, 44px controls, inputs at 17px (iOS does not zoom), no sideways scroll at 320px. */
:root{--ink:#1C2630;--ink-2:#46525E;--muted:#6B7682;--paper:#F4F5F2;--surface:#fff;--line:#DADFE3;--line-2:#E8EBEE;
  --brand:#1C397B;--brand-2:#2A4C96;--brand-weak:#E8EDF7;--signal:#F29A0D;--signal-ink:#9A5B00;--ok:#2E7D4F;--danger:#B42318;
  --r-s:8px;--r-m:12px;--r-l:18px}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.7 "IBM Plex Sans Hebrew",-apple-system,"Segoe UI",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;font-feature-settings:"tnum" 1;overflow-wrap:break-word}
a{color:var(--brand-2)}
img,svg{max-width:100%}
:focus-visible{outline:3px solid var(--brand-2);outline-offset:2px;border-radius:4px}
.skip{position:absolute;inset-inline-start:12px;top:-80px;z-index:10;background:var(--brand);color:#fff;padding:10px 16px;border-radius:var(--r-s);text-decoration:none;font-weight:600}
.skip:focus{top:12px}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* header: the brand and two ways on */
.top{background:var(--surface);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:64px}
.brand{display:inline-flex;align-items:center;min-height:44px}
.brand img{display:block;width:114px;height:32px}
.topnav{display:flex;align-items:center;gap:4px}
.topnav a{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;border-radius:10px;color:var(--ink);text-decoration:none;font-weight:600;font-size:15px}
.topnav a:hover{background:var(--brand-weak)}
.topnav a.btn{color:#fff}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 22px;border-radius:12px;font:inherit;font-weight:600;font-size:16px;line-height:1.2;
  text-decoration:none;border:1px solid transparent;cursor:pointer}
.btn.pri{background:var(--brand);color:#fff}.btn.pri:hover{background:#152C60}
.btn.sec{background:var(--surface);border-color:var(--line);color:var(--ink)}.btn.sec:hover{border-color:var(--brand-2)}
.btn.sm{min-height:44px;padding:0 16px;font-size:15px}

/* page head */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:0 6px;margin:10px 0 0;font-size:14px;color:var(--ink-2)}
.crumbs a{display:inline-flex;align-items:center;min-height:40px;color:var(--ink-2);text-decoration:none}
.crumbs a:hover{color:var(--brand);text-decoration:underline}
.crumbs .sep{color:var(--muted)}
h1{font-size:clamp(28px,4.6vw,42px);line-height:1.2;margin:6px 0 12px;font-weight:700;letter-spacing:-.01em}
.lead{font-size:18px;line-height:1.75;color:var(--ink-2);margin:0 0 24px;max-width:40em}
h2{font-size:clamp(22px,3vw,28px);line-height:1.3;margin:44px 0 12px;font-weight:700}
h3{font-size:19px;line-height:1.4;margin:26px 0 8px;font-weight:600}
.prose{max-width:46em}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 14px;padding-inline-start:22px}
.prose li{margin:0 0 6px}
.note{font-size:15px;color:var(--ink-2)}
.ex{background:var(--surface);border:1px dashed var(--ink-2);border-radius:var(--r-s);padding:12px 14px;margin:0 0 16px}
.ex .ex-tag{display:inline-block;font-size:13px;font-weight:600;color:var(--signal-ink);background:#FFF6E6;border:1px solid #F7D49A;border-radius:999px;padding:0 10px;margin-bottom:6px}

/* calculator: inputs beside the result on a computer, above it on a phone */
.calc{display:grid;grid-template-columns:1fr;gap:16px;align-items:start;margin:0 0 8px}
@media (min-width:900px){.calc{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr)}.calc .out{position:sticky;top:16px}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:16px}
.panel h2{font-size:18px;margin:0 0 12px}
.fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(126px,1fr));gap:12px 12px}
.fields+.fields,.seg+.fields,.fields+.seg,.seg+.seg{margin-top:14px}
.f{min-width:0}
.f label,.seg legend{display:block;font-size:14px;line-height:1.35;font-weight:600;color:var(--ink-2);margin:0 0 5px}
.f input,.f select{display:block;width:100%;min-height:44px;padding:8px 12px;border:1px solid var(--line);border-radius:var(--r-s);background:var(--surface);
  color:var(--ink);font:inherit;font-size:17px;line-height:1.3}
.f input:hover,.f select:hover{border-color:#B9C2CA}
.f input[inputmode]{direction:ltr;text-align:right}
.f input[aria-invalid="true"]{border-color:var(--danger);background:#FDF3F2}
.f select{appearance:none;-webkit-appearance:none;padding-inline-end:34px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2346525E' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:left 12px center}
.hint{font-size:13.5px;color:var(--ink-2);margin:6px 0 0;line-height:1.5}
/* a choice of a few: radio buttons drawn as a segmented control */
.seg{border:0;padding:0;margin:0;min-width:0}
.seg .opts{display:flex;flex-wrap:wrap;gap:6px}
.seg label{position:relative;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:10px;
  background:var(--surface);color:var(--ink);font-weight:600;font-size:15px;cursor:pointer}
.seg input{position:absolute;opacity:0;width:1px;height:1px;margin:0}
.seg label:has(input:checked){background:var(--brand);border-color:var(--brand);color:#fff}
.seg label:has(input:focus-visible){outline:3px solid var(--brand-2);outline-offset:2px}
.check{display:flex;align-items:center;gap:10px;min-height:44px;margin-top:10px;font-weight:600;font-size:15px;color:var(--ink)}
.check input{width:22px;height:22px;accent-color:var(--brand);margin:0}
/* rows the user adds (elements, bars, openings, BOQ lines) */
.rows{display:flex;flex-direction:column;gap:10px}
.row{border:1px solid var(--line);border-radius:var(--r-m);padding:12px;background:#FBFBFA}
.row-h{display:flex;align-items:flex-end;gap:8px;margin-bottom:10px}
.row-h .f{flex:1}
.row-sum{margin-top:8px;font-size:15px;color:var(--ink-2)}
.row-sum b{color:var(--ink);font-size:16px}
.x{flex:0 0 44px;width:44px;height:44px;display:inline-grid;place-items:center;border:1px solid var(--line);border-radius:var(--r-s);background:var(--surface);
  color:var(--ink-2);font:inherit;font-size:22px;line-height:1;cursor:pointer}
.x:hover{border-color:var(--danger);color:var(--danger)}
.add{margin-top:12px}

/* the result: a drawing title block, the one place with the survey orange */
.sheet{background:var(--surface);border:1px solid var(--ink-2);border-inline-start:6px solid var(--signal);border-radius:4px;padding:16px 16px 12px;
  box-shadow:0 18px 40px -26px rgba(28,38,48,.45)}
.sheet h2{font-size:17px;margin:0 0 2px}
.sheet .sub{font-size:14px;color:var(--ink-2);margin-bottom:8px}
.big{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;margin:4px 0 6px}
.big b{font-size:36px;line-height:1.15;font-weight:700;color:var(--ink)}
.big span{font-size:16px;color:var(--ink-2)}
.res{list-style:none;margin:0;padding:0}
.res li{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:9px 0;border-top:1px solid var(--line-2);font-size:15.5px;line-height:1.5}
.res li span{color:var(--ink-2)}
.res li b{font-size:17px;white-space:nowrap;text-align:end}
.res li.key b{font-size:20px;color:var(--brand)}
.res li small{display:block;font-size:13px;color:var(--ink-2);font-weight:400}
.stamp{display:flex;justify-content:space-between;gap:10px;margin-top:10px;padding-top:8px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-2)}
.assume{font-size:14px;line-height:1.6;color:var(--ink-2);margin:10px 0 0}
.assume b{color:var(--ink)}
.out .btn{width:100%;margin-top:12px}

/* tables: a bill-of-quantities schedule */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-s);background:var(--surface);margin:0 0 16px}
.tbl{width:100%;border-collapse:collapse;font-size:15px;font-variant-numeric:tabular-nums}
.tbl th{background:#EEF1F5;text-align:start;font-weight:600;padding:9px 10px;border-bottom:1.5px solid var(--ink-2);white-space:nowrap}
.tbl td{padding:8px 10px;border-top:1px solid var(--line-2);vertical-align:middle}
.tbl td.n,.tbl th.n{text-align:end;white-space:nowrap}
.tbl tr.sum td{border-top:3px double var(--ink-2);font-weight:700}
.tbl caption{caption-side:bottom;text-align:start;font-size:13px;color:var(--ink-2);padding:8px 10px}

/* questions */
.faq{max-width:46em}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);margin:0 0 10px}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:52px;padding:10px 16px;cursor:pointer;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:0 0 auto;font-size:24px;line-height:1;color:var(--brand)}
.faq details[open] summary::after{content:"−"}
.faq .qa-a{padding:0 16px 12px}
.faq .qa-a p{margin:0 0 10px}

/* the way to the full calculation */
.cta-box{background:var(--brand-weak);border:1px solid #D5DEEC;border-radius:var(--r-l);padding:24px 20px;margin:44px 0 0}
.cta-box h2{margin:0 0 8px}
.cta-box p{margin:0 0 16px;max-width:40em;color:var(--ink-2)}
.cta-box .acts{display:flex;flex-wrap:wrap;gap:10px}

/* other tools */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(240px,100%),1fr));gap:12px}
.card{display:block;min-height:44px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:14px 16px;color:var(--ink);text-decoration:none}
.card:hover{border-color:var(--brand-2)}
.cards.big{grid-template-columns:repeat(auto-fill,minmax(min(300px,100%),1fr))}
.cards.big .card{padding:18px 18px 16px}.cards.big .card b{font-size:19px;margin-bottom:4px}
.card b{display:block;font-size:17px;color:var(--brand);margin-bottom:2px}
.card span{display:block;font-size:15px;line-height:1.55;color:var(--ink-2)}

.foot{margin-top:56px;background:var(--surface);border-top:1px solid var(--line);padding:16px 0 28px;font-size:14px;color:var(--ink-2)}
.foot nav{display:flex;flex-wrap:wrap;gap:0 18px;margin-bottom:6px}
.foot a{display:inline-flex;align-items:center;min-height:40px;color:var(--ink-2);text-decoration:none}
.foot a:hover{color:var(--brand);text-decoration:underline}
.foot p{margin:0}

@media (max-width:560px){
  .wrap{padding:0 16px}
  .top .wrap{min-height:58px}
  .topnav a{padding:0 8px;font-size:14.5px}
  .topnav a.btn{padding:0 14px}
  .lead{font-size:17px}
  .panel{padding:14px 12px}
  .sheet{padding:14px 12px 10px}
  .big b{font-size:32px}
  .cta-box{padding:20px 16px}
  .cta-box .btn{width:100%}
}
@media (max-width:359px){.brand img{width:96px;height:27px}.topnav a.nav-calc{display:none}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media print{.top,.foot,.cta-box,.add,.x,.skip,.crumbs{display:none!important}body{background:#fff}.sheet{box-shadow:none}}
/* spacing after a segmented choice; the example tables fit a phone */
.seg+*{margin-top:14px}
@media (max-width:560px){.ex .tbl{font-size:13.5px}.ex .tbl th,.ex .tbl td{padding:6px 5px}.ex .tbl svg{width:44px}}