/* Tecsply site v2 — shared stylesheet. Light theme only (decision 2026-09-28);
   dark tokens are kept under [data-theme="dark"] for a future manual toggle.
   Tokens carried over from v1. Two additions for WCAG AA text contrast:
   --ink-3 is darkened in light mode, and --copper-text is used for small copper text. */
:root{
  --bg:#F4F6F8; --surface:#FFFFFF; --surface-2:#E9EDF1; --line:#D3DAE1;
  --ink:#16212B; --ink-2:#4A5865; --ink-3:#5E6C79;
  --copper:#B5601F; --copper-2:#8F4A16; --copper-soft:#F6E5D6; --brand:#606C78; --copper-text:#8F4A16; --btn-bg:#8F4A16; --btn-hover:#6F380F; --btn-ink:#FFFFFF;
  --mask:#1E6B5A; --mask-soft:#DDEDE7;
  --core:#D8C79A; --prepreg:#EAE1C4;
  --warn:#7A5600; --warn-soft:#FBF0D2; --bad:#A8261D; --bad-soft:#F9E0DD;
  --focus:#1E6B5A;
  --shadow:0 1px 2px rgba(22,33,43,.06),0 8px 24px rgba(22,33,43,.06);
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0F161C; --surface:#161F27; --surface-2:#1E2932; --line:#2C3944;
  --ink:#E8EDF1; --ink-2:#AEBBC6; --ink-3:#8E9DA9;
  --copper:#E08A45; --copper-2:#F2A868; --copper-soft:#2E2119; --brand:#AEBBC6; --copper-text:#E89A5A; --btn-bg:#E08A45; --btn-hover:#F2A868; --btn-ink:#16212B;
  --mask:#4FB394; --mask-soft:#173129;
  --core:#8A7A4C; --prepreg:#5E5538;
  --warn:#E6BE5A; --warn-soft:#2E2710; --bad:#F2867E; --bad-soft:#3A1A18;
  --focus:#4FB394;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
[id]{scroll-margin-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Public Sans",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word}
h1,h2,h3,h4{font-family:"Archivo",system-ui,sans-serif;line-height:1.15;margin:0;text-wrap:balance;font-weight:700}
h1{font-size:clamp(2rem,4.8vw,3.2rem);font-variation-settings:"wdth" 92;letter-spacing:-.02em}
h2{font-size:clamp(1.45rem,3vw,2rem);font-variation-settings:"wdth" 95;letter-spacing:-.015em}
h3{font-size:1.18rem;font-variation-settings:"wdth" 100}
h4{font-size:1rem}
p{margin:0}
a{color:var(--mask)}
a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
.mono{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
.eyebrow{font-family:"Archivo",system-ui,sans-serif;font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--copper-text);font-weight:700}
.wrap{max-width:1140px;margin:0 auto;padding-inline:20px}
.prose{max-width:70ch}
.prose p+p,.prose p+ul,.prose ul+p,.prose p+ol{margin-top:1em}
.prose h2{margin-top:48px}
.prose h3{margin-top:32px}
.prose h2+p,.prose h3+p{margin-top:12px}
.prose ul,.prose ol{padding-left:22px}
.prose li+li{margin-top:6px}
.lead{font-size:1.1rem;color:var(--ink-2)}
.muted{color:var(--ink-2)}
.small{font-size:.86rem;color:var(--ink-3)}
.skip{position:absolute;left:-9999px;top:0;background:var(--surface);padding:8px 12px;z-index:30}
.skip:focus{left:12px;top:12px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* nav */
.nav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px}
.brand{display:flex;align-items:center;text-decoration:none;color:var(--brand);flex:none}
.brand .logo{height:36px;width:auto;display:block}
@media (max-width:520px){.brand .logo{height:30px}}
.foot-logo{color:var(--brand);margin-bottom:10px}
.foot-logo .logo{height:30px;width:auto;display:block}
.menu{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0;font-size:.9rem;font-weight:500}
.menu>li{position:relative}
.menu a,.menu .drop-btn{display:block;padding:8px 10px;border-radius:6px;color:var(--ink-2);text-decoration:none;background:none;border:0;font:inherit;cursor:pointer}
.menu a:hover,.menu .drop-btn:hover{color:var(--ink);background:var(--surface-2)}
.menu a[aria-current="page"]{color:var(--ink);box-shadow:inset 0 -2px 0 var(--copper)}
.menu .rfq-link{background:var(--btn-bg);color:var(--btn-ink);margin-left:6px}
.menu .rfq-link:hover{background:var(--btn-hover);color:var(--btn-ink)}
.menu .rfq-link[aria-current="page"]{color:var(--btn-ink);box-shadow:inset 0 -3px 0 var(--ink)}
.drop-btn::after{content:"";display:inline-block;margin-left:6px;border:4px solid transparent;border-top-color:currentColor;transform:translateY(2px)}
.sub{display:none;position:absolute;top:100%;left:0;min-width:230px;list-style:none;margin:6px 0 0;padding:6px;background:var(--surface);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)}
.sub a{padding:8px 10px}
.menu>li:hover>.sub,.menu>li:focus-within>.sub,.menu>li.open>.sub{display:block}
/* Desktop: invisible bridge over the 6px gap so moving the pointer from a menu title down into its submenu keeps :hover. */
@media (min-width:961px){.sub::before{content:"";position:absolute;left:-1px;right:-1px;top:-8px;height:8px}}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:6px;padding:8px 10px;color:var(--ink);font:inherit;font-weight:600;cursor:pointer}
@media (max-width:960px){
  .js .nav-toggle{display:inline-flex}
  .menu{position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:var(--surface);border-bottom:1px solid var(--line);padding:8px 12px 14px;max-height:calc(100vh - 60px);overflow-y:auto}
  .js .menu{display:none}
  .js .nav.open .menu{display:flex}
  .menu>li:hover>.sub{display:none}
  .sub,.menu>li.open>.sub,.menu>li:focus-within>.sub{display:block;position:static;box-shadow:none;border:0;margin:0;padding:0 0 0 14px;min-width:0;background:none}
  .drop-btn::after{display:none}
  .menu .rfq-link{margin:8px 0 0;text-align:center}
}

/* breadcrumb */
.crumbs{font-size:.84rem;color:var(--ink-3);padding-top:20px}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--line)}
.crumbs a{color:var(--ink-2)}

/* hero */
.hero.space{position:relative;isolation:isolate;background:#04070b;color:#fff;border-bottom:0;padding-block:112px 120px;overflow:hidden}
.hero.space .grid{grid-template-columns:minmax(0,680px)}
@media (max-width:860px){.hero.space{padding-block:64px 72px}}
.hero.space .bg{position:absolute;inset:0;z-index:-2;width:100%;height:100%;object-fit:cover;object-position:70% 50%}
.hero.space::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(4,7,11,.92) 0%,rgba(4,7,11,.75) 38%,rgba(4,7,11,.15) 70%,rgba(4,7,11,0) 100%)}
@media (max-width:860px){.hero.space::before{background:rgba(4,7,11,.72)}}
.hero.space h1{color:#fff}
.hero.space .lead{color:rgba(255,255,255,.86)}
.hero.space .eyebrow{color:#F2A868}
.hero.space .btn.ghost{color:#fff;border-color:rgba(255,255,255,.45)}
.hero.space .btn.ghost:hover{border-color:#fff}
.hero.space .stackup{background:rgba(255,255,255,.96)}
.facts-band{padding-block:0 8px}
.facts-band .facts{margin-top:-28px;position:relative;z-index:2;box-shadow:var(--shadow)}
.hero{padding-block:44px 36px;border-bottom:1px solid var(--line)}
.hero .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
@media (max-width:860px){.hero .grid{grid-template-columns:1fr}}
.hero-text{display:grid;gap:16px}
.page-head{padding-block:28px 36px;border-bottom:1px solid var(--line)}
.page-head .hero-text>*{max-width:78ch}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:6px;font-weight:600;font-size:.95rem;text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;line-height:1.3}
.btn.primary{background:var(--btn-bg);color:var(--btn-ink);border-color:var(--btn-bg)}
.btn.primary:hover{background:var(--btn-hover);border-color:var(--btn-hover)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--ink-3)}
.btn.sm{padding:6px 12px;font-size:.84rem}
.stackup{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:18px;box-shadow:var(--shadow);margin:0}
.stackup svg{width:100%;height:auto;display:block}
.stackup .cap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:10px}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-top:36px}
@media (max-width:720px){.facts{grid-template-columns:repeat(2,1fr)}}
.fact{background:var(--surface);padding:16px 18px}
.fact b{display:block;font-family:"Archivo",sans-serif;font-size:1.45rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.fact span{font-size:.82rem;color:var(--ink-2)}

/* product lines */
.product{display:grid;gap:12px;align-content:start}
.product-fig{margin:0 0 6px;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:14px}
.product-fig svg{width:100%;height:auto;display:block}
.product-fig img{width:100%;height:auto;display:block;border-radius:4px}
.product-fig .cap{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-top:8px}
.product .go{color:var(--mask);font-weight:600;font-size:.95rem}
.product ul{margin:0}

/* sections */
main section{padding-block:56px}
main section+section{border-top:1px solid var(--line)}
.sec-head{display:grid;gap:12px;margin-bottom:28px;max-width:74ch}
.two{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:900px){.three{grid-template-columns:1fr}}
@media (max-width:800px){.two{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:22px}
.card ul{margin:10px 0 0;padding-left:18px;color:var(--ink-2)}
a.card{display:grid;gap:10px;align-content:start;text-decoration:none;color:var(--ink)}
a.card:hover{border-color:var(--copper)}
a.card .go{color:var(--mask);font-weight:600;font-size:.9rem}
.callout{border-left:3px solid var(--copper);background:var(--copper-soft);padding:14px 18px;border-radius:0 6px 6px 0}
.callout.mask{border-left-color:var(--mask);background:var(--mask-soft)}
.callout h4+p,.callout h3+p{margin-top:6px}
.defn{font-size:1.04rem}
.defn dfn{font-style:normal;font-weight:600;color:var(--copper-text)}
.stack{display:grid;gap:14px;align-content:start}

/* article layout */
.article{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:48px;padding-block:40px 56px}
@media (max-width:960px){.article{grid-template-columns:minmax(0,1fr)}.toc{display:none}}
.toc{position:sticky;top:84px;align-self:start;font-size:.86rem}
.toc ol{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:6px}
.toc a{color:var(--ink-2);text-decoration:none}
.toc a:hover{color:var(--ink)}
.figure{margin:24px 0}
.meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.84rem;color:var(--ink-3)}

/* tables */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:8px;background:var(--surface);margin-block:20px;-webkit-overflow-scrolling:touch}
.tablewrap:focus-visible{outline:2px solid var(--focus)}
table{border-collapse:collapse;width:100%;min-width:680px;font-size:.9rem}
table.compact{min-width:0}
th,td{padding:11px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
th{background:var(--surface-2);font-family:"Archivo",sans-serif;font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);font-weight:700}
tbody th{background:none;font-family:inherit;font-size:inherit;letter-spacing:0;text-transform:none;color:var(--ink);font-weight:600}
tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
td.num,th.num{font-family:"JetBrains Mono",monospace;font-variant-numeric:tabular-nums;white-space:nowrap;font-size:.86rem}
table.compact td.num{white-space:normal}
td.r,th.r{text-align:right}
td .tag,.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:.74rem;font-weight:600;letter-spacing:.03em}
.tag.ai{background:var(--copper-soft);color:var(--copper-text)}
.tag.aero{background:var(--mask-soft);color:var(--mask)}
.tag.both{background:var(--surface-2);color:var(--ink-2)}
caption{caption-side:bottom;text-align:left;padding:10px 14px;font-size:.8rem;color:var(--ink-3)}
tr.hl td{background:var(--copper-soft)}

/* thickness ladder */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-block:20px}
@media (max-width:900px){.ladder{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.ladder{grid-template-columns:1fr}}
.rung{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:18px;display:grid;gap:10px;align-content:start}
.rung .band{height:10px;border-radius:2px;background:var(--core)}
.rung .range{font-family:"JetBrains Mono",monospace;font-size:.86rem;color:var(--copper-text);font-weight:500}
.rung ul{margin:0;padding-left:18px;font-size:.9rem;color:var(--ink-2)}
.rung ul li+li{margin-top:4px}

/* tools */
.tool{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:24px;box-shadow:var(--shadow)}
.tool .form{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:800px){.tool .form{grid-template-columns:1fr}}
.tool-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:start}
@media (max-width:900px){.tool-grid{grid-template-columns:minmax(0,1fr)}}
label{display:grid;gap:6px;font-size:.84rem;font-weight:600;color:var(--ink-2)}
select,input,textarea{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:9px 10px;width:100%;min-width:0}
input[aria-invalid="true"]{border-color:var(--bad)}
.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
@media (max-width:520px){.fields{grid-template-columns:minmax(0,1fr)}}
.fields .full{grid-column:1/-1}
.result{margin-top:20px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media (max-width:800px){.result{grid-template-columns:repeat(2,1fr)}}
.result .r,.kpis .r{background:var(--surface-2);border-radius:6px;padding:12px 14px;display:grid;gap:4px}
.result .r span,.kpis .r span{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);font-family:"Archivo",sans-serif;font-weight:700}
.result .r b{font-size:1rem;font-weight:600}
.kpis{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.kpis .r b{font-family:"JetBrains Mono",monospace;font-variant-numeric:tabular-nums;font-size:1.3rem;font-weight:500}
.kpis .r small{color:var(--ink-2);font-size:.82rem}
.note{margin-top:14px;font-size:.9rem;color:var(--ink-2)}
.status{border-radius:6px;padding:12px 14px;font-weight:600;border-left:4px solid}
.status.ok{background:var(--mask-soft);color:var(--mask);border-color:var(--mask)}
.status.warn{background:var(--warn-soft);color:var(--warn);border-color:var(--warn)}
.status.bad{background:var(--bad-soft);color:var(--bad);border-color:var(--bad)}
.status p{font-weight:400;margin-top:4px;color:var(--ink)}
.bar{display:flex;height:14px;border-radius:4px;overflow:hidden;background:var(--surface-2);margin-top:8px}
.bar .d{background:var(--copper)}
.bar .c{background:var(--mask)}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:.82rem;color:var(--ink-2);margin-top:6px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:6px;vertical-align:-1px}
.stk-table select{padding:6px 8px;font-size:.84rem}
.stk-table td{padding:6px 10px;vertical-align:middle}
.stk-table tr.cu td:first-child{border-left:4px solid var(--copper)}
.stk-table tr.pp td:first-child{border-left:4px solid var(--prepreg)}
.stk-table tr.core td:first-child{border-left:4px solid var(--core)}
.formula{margin-top:24px}
.formula .a{padding-bottom:16px;color:var(--ink-2)}
.formula code,.eq{font-family:"JetBrains Mono",monospace;font-size:.88rem;background:var(--surface-2);padding:2px 6px;border-radius:4px}
.eq{display:block;padding:10px 12px;margin:10px 0;overflow-x:auto;white-space:pre}
output{display:block}
pre.summary{white-space:pre;overflow-x:auto;background:var(--surface-2);padding:12px;border-radius:6px;font-size:.8rem;font-family:"JetBrains Mono",monospace;max-height:280px}

/* readiness pre-check */
.drop{display:grid;gap:6px;place-items:center;text-align:center;margin-top:12px;padding:28px 16px;border:2px dashed var(--line);border-radius:10px;background:var(--bg);cursor:pointer;color:var(--ink)}
.drop:hover,.drop.over{border-color:var(--copper);background:var(--copper-soft)}
.drop:focus-within{outline:2px solid var(--focus);outline-offset:2px}
.drop-title{font-weight:600;font-family:"Archivo",sans-serif}
.kpis-6{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:640px){.kpis-6{grid-template-columns:repeat(2,minmax(0,1fr))}}
.kpis-6 .r b{font-size:1.05rem}
table.checks td:first-child{white-space:nowrap;width:1%}
table.checks th[scope=row]{white-space:nowrap}
.chip{display:inline-block;padding:2px 9px;border-radius:999px;font-size:.74rem;font-weight:700;letter-spacing:.03em}
.chip.ok{background:var(--mask-soft);color:var(--mask)}
.chip.info{background:var(--surface-2);color:var(--ink-2)}
.chip.review{background:var(--warn-soft);color:var(--warn)}
.chip.eq,.chip.missing{background:var(--bad-soft);color:var(--bad)}
.small-cell{font-size:.8rem;word-break:break-all}

/* faq */
details{border:1px solid var(--line);border-radius:8px;background:var(--surface);padding:0 18px}
details+details{margin-top:10px}
summary{cursor:pointer;padding:14px 0;font-weight:600;font-family:"Archivo",sans-serif;font-size:1.02rem;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--copper-text);font-weight:700;flex:none}
details[open] summary::after{content:"–"}
details .a{padding-bottom:16px;color:var(--ink-2);max-width:74ch}
details .a p+p{margin-top:.8em}

/* partners map */
.map{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:14px;margin:0;align-self:start}
.map svg{width:100%;height:auto;display:block}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:32px}
@media (max-width:800px){.contact{grid-template-columns:1fr}}
.rfq{display:grid;gap:12px}
.toast{display:none;margin-top:10px;padding:10px 14px;border-radius:6px;background:var(--mask-soft);color:var(--mask);font-weight:600}
.toast.err{background:var(--bad-soft);color:var(--bad)}
.copyrow{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.copyrow code{background:var(--surface-2);padding:4px 8px;border-radius:4px}

/* footer */
.refs{font-size:.88rem;color:var(--ink-2);padding-left:20px;margin:12px 0 0}
.refs li+li{margin-top:6px}
.site-foot{border-top:1px solid var(--line);padding-block:32px 44px;font-size:.86rem;color:var(--ink-3);background:var(--surface)}
.site-foot .cols{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:24px}
@media (max-width:800px){.site-foot .cols{grid-template-columns:1fr 1fr}}
.site-foot h2{font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);margin-bottom:8px}
.site-foot ul{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.site-foot a{color:var(--ink-2)}
.site-foot .fine{margin-top:24px;display:grid;gap:6px;border-top:1px solid var(--line);padding-top:16px}
@media (prefers-reduced-motion:no-preference){
  .hero .hero-text>*{animation:rise .5s ease both}
  .hero .hero-text>*:nth-child(2){animation-delay:.05s}.hero .hero-text>*:nth-child(3){animation-delay:.1s}.hero .hero-text>*:nth-child(4){animation-delay:.15s}
  @keyframes rise{from{opacity:.001;transform:translateY(6px)}to{opacity:1;transform:none}}
}
@media print{.nav,.site-foot,.cta{display:none}}